| PT | J |
| AU | Marcus, R Imrie, K Belch, A Cunningham, D Flores, E Catalano, J Solal-Celigny, P Offner, F Walewski, J Raposo, J Jack, A Smith, P |
| TI | CVP chemotherapy plus rituximab compared with CVP as first-line treatment for advanced follicular lymphoma |
| SO | BLOOD |
| AB | The combination of cyclophosphamide, vincristine, and prednisone (CVP) is one of several standard treatment options for advanced follicular lymphoma. This, like similar chemotherapeutic regimens, induces response rates of 60% to 80%, with a median response duration of under 2 years. Rituximab, a chimeric monoclonal antibody against CD20, is active in follicular lymphoma, both as monotherapy and in combination with chemotherapy. Previously untreated patients with stages III to IV follicular lymphoma were randomly assigned to receive either 8 cycles of CVP plus rituximab (R-CVP; n = 162) or CVP (n = 159). Overall and complete response rates were 81% and 41% in the R-CVP arm versus 57% and 10% in the CVP arm, respectively (P < .0001). At a median follow-up of 30 months, patients treated with R-CVP had a very significantly prolonged time to progression (median 32 months versus 15 months for CVP; P < .0001). Median time to treatment fail-ure was 27 months in patients receiving R-CVP and 7 months in the CVP arm (P < .0001). Rituximab did not add significantly to the toxicity of CVP. The addition of rituximab to the CVP regimen significantly improves the clinical outcome in patients with previously untreated advanced follicular lymphoma, without increased toxicity. (C) 2005 by The American Society of Hematology. |
| C1 | Addenbrookes Hosp, Cambridge CB2 2QQ, England. Toronto Sunnybrook Reg Canc Ctr, Toronto, ON, Canada. Cross Canc Inst, Edmonton, AB T6G 1Z2, Canada. Royal Marsden Hosp, Surrey, England. Hosp Gen Gregorio Maranon, E-28007 Madrid, Spain. Monash Med Ctr, Clayton, Vic 3168, Australia. Clin Victor Hugo, Le Mans, France. UZ Ghent, Dienst Hematol, Ghent, Belgium. M Sklodowska Curie Mem Inst, Warsaw, Poland. Hosp Santa Maria, Lisbon, Portugal. Gen Infirm, Leeds LS1 3EX, W Yorkshire, England. Canc Res UK, London, England. Univ Coll London, Canc Trials Ctr, London, England. |
| RP | Marcus, R, Addenbrookes Hosp, Cambridge CB2 2QQ, England. |
| EM | robert.marcus@addenbrookes.nhs.uk |
| TC | 14 |
| PD | FEB 15 |
| PY | 2005 |
| VL | 105 |
| IS | 4 |
| BP | 1417 |
| EP | 1423 |
| UT | ISI:000226970800017 |
| ER |
| PT | J |
| AU | Reyes, F Lepage, E Ganem, G Molina, TJ Brice, P Coiffier, B Morel, P Ferme, C Bosly, A Lederlin, P Laurent, G Tilly, H Aoudjane, M Assouline, D Audhuy, B Azagury, M Bauduer, F Baumelou, E Bichoffe, MA Biron, P Blanc, M Bordessoulle, D Bosly, A Bouabdallah, R Bourquard, P Brice, P Mounier, N Simon, D Gisselbrecht, C Dombret, H Briere, J Caillot, D Casanovas, O Flesch, M Chauffert, B Cassuto, GP Castaigne, S Christian, B Coiffier, B Colin, P Pinon-Netter, G Conroy, T Cure, H Delmer, A Delwail, V Devidas, A Dreyfus, F Dupont, G Eisenmann, JC Fabbro, M Ferme, C Fillet, G Furchart, C Gabarre, J Gabez, M Gautier, M Haioun, C Divine, M Belhadj, K Reyes, F Herbrecht, R Hermine, O Varet, B Janvier, M Jourdan, E Kamioner, D Kerneis, Y Morvan, F Lederlin, P Lefort, S Lepeu, G Lotz, JP Machover, D Marechal, F Marit, G Martin, C Meyer, S Morel, P Dupriez, B Munck, JN Ferme, C Carde, P Offner, F Pavlovitch, JM Plantier, I Orfeuvre, H Peaud, PY Peny, AM Platini, C Pullik, M Quesnel, B Morschausher, F Reman, O Leporrier, M Rose, C Rodon, P Rossi, JF Salles, B Schlaifer, D Huguet, F Huyn, A Sebban, C Simon, M Solal-Celigny, P Sotto, JJ Soussain, C Allard, C Tertian, G Tilly, H Thyss, A Traulle, C Travade, P Van Hoof, A Zini, JM Briere, J Diebold, J Fabiani, B Gaulard, P Guettier, C Molina, T Petrella, T |
| CA | GELA |
| TI | ACVBP versus CHOP plus radiotherapy for localized aggressive lymphoma |
| SO | NEW ENGLAND JOURNAL OF MEDICINE |
| AB | BACKGROUND: Chemoradiotherapy is standard treatment for localized aggressive lymphoma. To determine the optimal therapy for nonelderly persons with low-risk localized lymphoma, we conducted a randomized trial comparing chemoradiotherapy with chemotherapy alone. METHODS: Previously untreated patients less than 61 years old with localized stage I or II aggressive lymphoma and no adverse prognostic factors according to the International Prognostic Index were randomly assigned to three cycles of cyclophosphamide, doxorubicin, vincristine, and prednisone (CHOP) plus involved-field radiotherapy (329 patients) or chemotherapy alone with dose-intensified doxorubicin, cyclophosphamide, vindesine, bleomycin, and prednisone (ACVBP) plus sequential consolidation (318 patients). RESULTS: With a median follow-up of 7.7 years, event-free and overall survival rates were significantly higher in the group given chemotherapy alone than in the group given CHOP plus radiotherapy (P<0.001 and P=0.001, respectively). The five-year estimates of event-free survival were 82 percent (95 percent confidence interval, 78 to 87 percent) for patients receiving chemotherapy alone and 74 percent (95 percent confidence interval, 69 to 78 percent) for those receiving chemoradiotherapy. The respective five-year estimates of overall survival were 90 percent (95 percent confidence interval, 87 to 93 percent) and 81 percent (95 percent confidence interval, 77 to 86 percent). In a multivariate analysis, event-free and overall survival rates were affected by treatment group, independently of tumor stage and the presence or absence of bulky disease. CONCLUSIONS: In patients under 61 years of age, chemotherapy with three cycles of ACVBP followed by sequential consolidation is superior to three cycles of CHOP plus radiotherapy for the treatment of low-risk localized lymphoma. |
| C1 | Hop Henri Mondor, Assistance Publ Hop Paris, F-94010 Creteil, France. Clin Victor Hugo, Le Mans, France. Hop Hotel Dieu, Assistance Publ Hop Paris, F-75181 Paris, France. Hop St Louis, Assistance Publ Hop Paris, Paris, France. Ctr Hosp Lyon Sud, F-69310 Pierre Benite, France. Inst Gustave Roussy, Villejuif, France. Ctr Hosp Brabois, Nancy, France. Hop Purpan, Toulouse, France. Ctr Henri Becquerel, F-76038 Rouen, France. Clin Univ Mt Godinne, Yvoir, Belgium. |
| RP | Reyes, F, Hop Henri Mondor, Serv Hematol Clin, F-94010 Creteil, France. |
| EM | felix.reyes@hmn.ap-hop-paris.fr |
| TC | 5 |
| PD | MAR 24 |
| PY | 2005 |
| VL | 352 |
| IS | 12 |
| BP | 1197 |
| EP | 1205 |
| UT | ISI:000227832300006 |
| ER |
| PT | J |
| AU | Feugier, P Van Hoof, A Sebban, C Solal-Celigny, P Bouabdallah, R Ferme, C Christian, B Lepage, E Tilly, H Morschhauser, F Gaulard, P Salles, G Bosly, A Gisselbrecht, C Reyes, F Coiffier, B |
| TI | Long-term results of the R-CHOP study in the treatment of elderly patients with diffuse large B-cell lymphoma: A study by the groupe d'Etude des lymphomes de l'adulte |
| SO | JOURNAL OF CLINICAL ONCOLOGY |
| AB | Purpose To analyze the long-term outcome of patients included in the
Lymphome Non Hodgkinien study 98-5 (LNH98-5) comparing
cyclophosphamide, doxorubicin, vincristine, and prednisone (CHOP) to
rituximab plus CHOP (R-CHOP) in elderly patients with diffuse large
B-cell lymphoma. Patients and Methods LNH98-5 was a randomized study that included 399 previously untreated patients, age 60 to 80 years, with diffuse large B-cell lymphoma. Patients received eight cycles of classical CHOP (cyclophosphamide 750 mg/m(2), doxorubicin 50 mg/m(2), vincristine 1.4 mg/m(2), and prednisone 40 mg/m(2) for 5 days) every 3 weeks. In R-CHOP, rituximab 375 mg/m(2) was administered the same day as CHOP. Survivals were analyzed using the intent-to-treat principle. Results Median follow-up is 5 years at present, Event-free survival, progression-free survival, disease-free survival, and overall survival remain statistically significant in favor of the combination of R-CHOP (P = .00002, P < .00001, P < .00031, and P < .0073, respectively, in the log-rank test). Patients with low-risk or high-risk lymphoma according to the age-adjusted International Prognostic Index have longer survivals if treated with the combination. No long-term toxicity appeared to be associated with the B-CHOP combination. Conclusion Using the combination of R-CHOP leads to significant improvement of the outcome of elderly patients with diffuse large B-cell lymphoma, with significant survival benefit maintained during a 5-year follow-up. This combination should become the standard for treating these patients. |
| C1 | CHU Brabois, Dept Hematol, F-54500 Vandoeuvre Les Nancy, France. Ctr Leon Berard, F-69373 Lyon, France. Ctr Jean Bernard, Le Mans, France. Inst J Paoli I Calmettes, F-13009 Marseille, France. Inst Gustave Roussy, Villejuif, France. Hop Bon Secours, Metz, France. CHU Henri Mondor, F-94010 Creteil, France. Ctr Henri Becquerel, F-76038 Rouen, France. CHU Lille, F-59037 Lille, France. Hospices Civils Lyon, Pierre Benite, France. Hop St Louis, Paris, France. Univ Catholique Louvain, Yvoir, Belgium. Acad Ziekenhuis Sint Jan, Brugge, Belgium. |
| RP | Feugier, P, CHU Brabois, Dept Hematol, F-54500 Vandoeuvre Les Nancy, France. |
| EM | p.feugier@chu-nancy.fr |
| TC | 4 |
| PD | JUN 20 |
| PY | 2005 |
| VL | 23 |
| IS | 18 |
| BP | 4117 |
| EP | 4126 |
| UT | ISI:000229886700016 |
| ER |
| PT | J |
| AU | Rohatiner, AZS Gregory, WM Peterson, B Borden, E Solal-Celigny, P Hagenbeek, A Fisher, RI Unterhalt, M Arranz, R Chisesi, T Aviles, A Lister, TA |
| TI | Meta-analysis to evaluate the role of interferon in follicular lymphoma |
| SO | JOURNAL OF CLINICAL ONCOLOGY |
| AB | Purpose To determine whether interferon (IFN)-alpha 2, when given with
or following chemotherapy, influences response rate, remission
duration, and survival in newly diagnosed patients with follicular
lymphoma. Patients and Methods Ten phase III studies evaluating the role of IFN-alpha 2 in 1,922 newly diagnosed patients with follicular lymphoma were analyzed. Updated individual patient data were used to perform meta-analyses for response, survival, and remission duration. Results The addition of IFN-alpha 2 to initial chemotherapy did not significantly influence response rate. An overall meta-analysis for survival showed a significant difference in favor of IFN-alpha 2, but also showed significant heterogeneity between studies. Further analyses were carried out in order to explain this heterogeneity, and to define the circumstances in which IFN-alpha 2 prolonged survival. The survival advantage was seen when IFN-alpha 2 was given: (1) in conjunction with relatively intensive initial chemotherapy (2P = .00005), (2) at a dose >= 5 million units (2P = .000002), (3) at a cumulative dose >= 36 million units per month (2P = .000008), and (4) with chemotherapy rather than as maintenance therapy (P = .004). With regard to remission duration, there was also a significant difference in favor of IFN-alpha 2, irrespective of the intensity of chemotherapy used, IFN dose, or whether IFN was given as a maintenance strategy or with chemotherapy. Conclusion When given in the context of relatively intensive initial chemotherapy, and at a dose >= 5 million units (>= 36 x 10(6) units per month), IFN-alpha 2 prolongs survival and remission duration in patients with follicular lymphoma. (c) 2005 by American Society of Clinical Oncology. |
| C1 | St Bartholomews Hosp, Dept Med Oncol, London EC1A 7BE, England. Univ Minnesota, Minneapolis, MN USA. Taussig Canc Ctr, Cleveland, OH USA. Ctr Jean Bernard, Le Mans, France. Univ Utrecht, Med Ctr, Utrecht, Netherlands. Univ Rochester, Wilmot Canc Ctr, Rochester, NY USA. Univ Gottingen, D-3400 Gottingen, Germany. Hosp Univ Princesa, Madrid, Spain. Osped Civile, Venice, Italy. Oncol Hosp, IMSS, Mexico City, DF, Mexico. |
| RP | Rohatiner, AZS, St Bartholomews Hosp, Dept Med Oncol, 45 Little Britain, London EC1A 7BE, England. |
| EM | ama.rohatiner@cancer.org.uk |
| TC | 4 |
| PD | APR 1 |
| PY | 2005 |
| VL | 23 |
| IS | 10 |
| BP | 2215 |
| EP | 2223 |
| UT | ISI:000228260200014 |
| ER |
| PT | J |
| AU | Brain, EGC Bachelot, T Serin, D Kirscher, S Graic, Y Eymard, JC Extra, JM Combe, M Fourme, E Nogues, C Rouesse, J |
| CA | RAPP-01 Trial Investigators |
| TI | Life-threatening sepsis associated with adjuvant doxorubicin plus docetaxel for intermediate-risk breast cancer |
| SO | JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION |
| AB | Context Adjuvant chemotherapy with new cytotoxic agents for breast
cancer must be properly assessed for toxicity. Objective To describe adverse events associated with adjuvant chemotherapy for breast cancer, which led to premature termination of a clinical trial. Design, Setting, and Patients We conducted a prospective randomized multicenter study (Reposant sur des Arguments Pronostiques et Predictifs [RAPP]-01) to compare the effectiveness of 2 chemotherapy regimens. Patients (women aged 18-70 years) had primary unilateral breast cancer and either a moderate number of positive axillary lymph nodes (:53) or no positive axillary lymph nodes (NO), but were at a high risk of relapse. Patients were treated at 11 French cancer referral centers from June 1999 through January 2003. Primary prophylaxis for febrile neutropenia was not recommended in the study protocol. Interventions Doxorubicin, 50 mg/m(2), plus docetaxel, 75 mg/m(2), or doxorubicin, 60 mg/m(2), plus cyclophosphamide, 600 mg/m(2), given postoperatively for 4 courses. Main Outcome Measures The main end point was the disease-free survival rate at 5 years, as estimated using the Kaplan-Meier product limit method. Secondary end points included safety, which is the focus of this article, and overall survival. Results A total of 627 women were enrolled. Median follow-up is currently too short (24 months) to analyze the primary end point. The trial was terminated prematurely when 2 deaths related to drug toxicity and 1 case of perforative peritonitis occurred among patients with febrile neutropenia, all in the doxorubicin-docetaxel group. The incidence of febrile neutropenia was significantly higher with the doxorubicin-docetaxel regimen (40.8%) than with the doxorubicin-cyclophosphamide regimen (7.1 %) (P<.001). Conclusions A high risk of life-threatening complications associated with the doxorubicin-docetaxel regimen was found in this open-label controlled trial. The doxorubicin-docetaxel combination should not be considered as an alternative to the doxorubicin-cyclophosphamide regimen outside carefully designed studies that include primary prophylaxis for febrile neutropenia. |
| C1 | Rene Huguenin Canc Ctr, Dept Med Oncol, F-92210 St Cloud, France. Rene Huguenin Canc Ctr, Dept Biostat, F-92210 St Cloud, France. Leon Berard Canc Ctr, Dept Med Oncol, Lyon, France. St Catherine Inst Breast Clin, Avignon, France. Henri Becquerel Canc Ctr, Dept Radiotherapy, Rouen, France. Jean Godinot Canc Ctr, Dept Med Oncol, Reims, France. Inst Curie, Dept Med Oncol, Paris, France. Ctr Hosp Mans, Dept Med, Le Mans, France. |
| RP | Brain, EGC, Rene Huguenin Canc Ctr, Dept Med Oncol, 35 Rue Dailly, F-92210 St Cloud, France. |
| EM | e.brain@stcloud-huguenin.org |
| TC | 3 |
| PD | MAY 18 |
| PY | 2005 |
| VL | 293 |
| IS | 19 |
| BP | 2367 |
| EP | 2371 |
| UT | ISI:000229120600024 |
| ER |
| PT | J |
| AU | Jhung, SH Chang, JS Hwang, YK Greneche, JM Ferey, G Cheetham, AK |
| TI | Isomorphous substitution of transition-metal ions in the nanoporous nickel phosphate VSB-5 |
| SO | JOURNAL OF PHYSICAL CHEMISTRY B |
| AB | The transition-metal-incorporated nickel phosphate molecular sieves (TMI-VSB-5) have been hydrothermally synthesized at 453 K in weak basic conditions under microwave irradiation. By means of X-ray diffraction. inductively coupled plasma (ICP), ultraviolet-visible? (UV-vis) diffuse reflectance, and Mossbauer spectroscopies, successful isomorphous (at least partial) substitution of transition-metal ions in the VSB-5 framework has been verified. Characterization results show that the framework structure of nanoporous VSB-5 can accommodate a substantial level of isomorphous substitution of transition-metal ions up to about 10.5. and 3 atom % for Fe. Mn, and V, respectively. in both octahedral nickel sites (Mn and Fe) and tetrahedral phosphorus sites (V). The isomorphous substitution including the, replacement mechanism was studied by not only the change of unit cell parameters but also spectroscopic analysis. The unit cell parameters of TMI-VSB-5 including a unit cell volume and a-axis length relied oil the, ionic radii difference between the incorporated ion and the original framework ions such as Ni or P (R-TMI - R-Ni or R-TMI - R-P). |
| C1 | Korea Res Inst Chem Technol, Res Ctr Nanocatalysts, Taejon 305600, South Korea. Univ Maine, Lab Phys Etat Condense, F-72000 Le Mans, France. Univ Versailles, Inst Lavoisier, CNRS, UMR 173, F-78035 Versailles, France. Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA. |
| RP | Chang, JS, Korea Res Inst Chem Technol, Res Ctr Nanocatalysts, POB 107, Taejon 305600, South Korea. |
| EM | jschang@krict.re.kr cheetham@mrl.ucsb.edu |
| TC | 3 |
| PD | JAN 20 |
| PY | 2005 |
| VL | 109 |
| IS | 2 |
| BP | 845 |
| EP | 850 |
| UT | ISI:000226313200028 |
| ER |
| PT | J |
| AU | Jhung, SH Chang, JS Yoon, JW Greneche, JM Ferey, G Cheetham, AK |
| TI | Synthesis of transition-metal-incorporated nickel phosphate molecular sieves TMI-VSB-1 |
| SO | CHEMISTRY OF MATERIALS |
| C1 | Korea Res Inst Chem Technol, Res Ctr Nanocatalysis, Taejon 305600, South Korea. Univ Maine, Lab Phys Etat Condense, F-72000 Le Mans, France. Univ Versailles, CNRS, UMR 173, Inst Lavoisier, F-78035 Versailles, France. Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA. |
| RP | Jhung, SH, Korea Res Inst Chem Technol, Res Ctr Nanocatalysis, POB 107, Taejon 305600, South Korea. |
| TC | 3 |
| PD | DEC 28 |
| PY | 2004 |
| VL | 16 |
| IS | 26 |
| BP | 5552 |
| EP | 5555 |
| UT | ISI:000225908600002 |
| ER |
| PT | J |
| AU | Goreshnik, E Leblanc, M Maisonneuve, V |
| TI | Tris(2-ethylamino)amine (tren) as template for the elaboration of fluorides: Synthesis and crystal structures of [(C2H4NH3)(3)NH] center dot [Zr3F16(H2O)], [(C2H4NH3)(3)N](2) center dot [ZrF6] center dot [Zr2F12] and [(C2H4NH3)(3)N] center dot [TaF7] center dot F |
| SO | JOURNAL OF SOLID STATE CHEMISTRY |
| AB | Using tris(2-ethylamino)amine (tren) as a template, three new fluorides are obtained by solvothermal synthesis: [(C2H4NH3)(3)NH].[Zr3F16(H2O)] (I), [(C2H4NH3)(3)N](2).[ZrF6].[Zr2F12] (II) and [(C2H4NH3)(3)N].[TaF7].F (III). The structure determinations are performed by single crystal technique. The structure of I consists of infinite spiral-like [Zr3F16(H2O)](4-) chains connected by tetraprotonated [trenH(4)](4+) cations which possess a plane configuration. In II, isolated [ZrF6] octahedra or [Zr2F12] dimers are linked to organic cations by a tridimensional hydrogen bond network. In III, [TaF7](2-) monocapped trigonal prisms and "isolated" fluoride ions are connected by hydrogen bonds to template moieties. In II and III, every organic moiety is triprotonated [trenH(3)](3divided by). with a "spider" configuration. In the tantalum phase, the hydrogen bond network leads to the formation of a layered structure. (C) 2004 Elsevier Inc. All rights reserved. |
| C1 | Univ Maine, Lab Oxydes & Fluorures, CNRS, UMR 6010,Fac Sci & Tech, F-72085 Le Mans 9, France. |
| RP | Maisonneuve, V, Univ Maine, Lab Oxydes & Fluorures, CNRS, UMR 6010,Fac Sci & Tech, Ave Olivier Messiaen, F-72085 Le Mans 9, France. |
| EM | vincent.maisonneuve@univ-lemans.fr |
| TC | 3 |
| PD | NOV |
| PY | 2004 |
| VL | 177 |
| IS | 11 |
| BP | 4023 |
| EP | 4030 |
| UT | ISI:000225508800027 |
| ER |
| PT | J |
| AU | Wang, QA Nivanen, L Le Mehaute, A Pezeril, M |
| TI | Temperature and pressure in nonextensive thermostatistics |
| SO | EUROPHYSICS LETTERS |
| AB | The definitions of temperature in the nonextensive statistical thermodynamics based on Tsallis entropy are analyzed. A definition of pressure is proposed for nonadditive systems by using a nonadditive effective volume. The thermodynamics of nonadditive photon gas is discussed on this basis. We show that the Stefan-Boltzmann law can be preserved within nonextensive thermodynamics. |
| C1 | Inst Super Mat & Mech Avances, F-72000 Le Mans, France. Univ Maine, Lab Phys Etat Condense, F-72000 Le Mans, France. |
| RP | Wang, QA, Inst Super Mat & Mech Avances, 44 Ave FA Bartholdi, F-72000 Le Mans, France. |
| TC | 3 |
| PD | MAR |
| PY | 2004 |
| VL | 65 |
| IS | 5 |
| BP | 606 |
| EP | 612 |
| UT | ISI:000225736900004 |
| ER |
| PT | J |
| AU | Halaimia-Toumi, N Casse, N Demattei, MV Renault, S Pradier, E Bigot, Y Laulier, M |
| TI | The GC-rich transposon Bytmar1 from the deep-sea hydrothermal crab, Bythograea thermydron, may encode three transposase isoforms from a single ORF |
| SO | JOURNAL OF MOLECULAR EVOLUTION |
| AB | Mariner-like elements (MLEs) are classII transposons with highly conserved sequence properties and are widespread in the genome of animal species living in continental environments. We describe here the first full-length MLE found in the genome of a marine crustacean species, the deep-sea hydrothermal crab Bythograea thermydron (Crustacea), named Bytmar1. A comparison of its sequence features with those of the MLEs contained in the genomes of continental species reveals several distinctive characteristics. First, Bytinar1 elements contains an ORF that may encode three transposase isoforms 349, 379, and 398 amino acids (aa) in long. The two biggest proteins are due to the presence of a 30- and 49-aa flag, respectively, at the N-terminal end of the 349-aa cardinal MLE transposase. Their GC contents are also significantly higher than those found in continental MLEs. This feature is mainly due to codon usage in the transposase ORF and directly interferes with the curvature propensities of the Bytmar1 nucleic acid sequence. Such an elevated GC content may interfere with the ability of Bytmar 1 to form an excision complex and, in consequence, with its efficiency to transpose. Finally, the origin of these characteristics and their possible consequences on transposition efficiency are discussed. |
| C1 | Univ Tours, Lab Etude Parasites Genet, UFR Sci & Tech, F-37200 Tours, France. Univ Maine, Biol & Genet Evolut Lab, F-72085 Le Mans, France. |
| RP | Bigot, Y, Univ Tours, Lab Etude Parasites Genet, UFR Sci & Tech, Parc Grandmont, F-37200 Tours, France. |
| EM | bigot@univ-tours.fr |
| TC | 3 |
| PD | DEC |
| PY | 2004 |
| VL | 59 |
| IS | 6 |
| BP | 747 |
| EP | 760 |
| UT | ISI:000225492100003 |
| ER |
| PT | J |
| AU | Le Bail, A |
| TI | Monte Carlo indexing with McMaille |
| SO | POWDER DIFFRACTION |
| AB | A Monte Carlo code for indexing powder diffraction patterns is presented. Cell parameters are generated randomly and tested against an idealized powder profile generated from the extracted d's and I's. Limits with this program in solving problems associated with zeropoint errors and impurity 3 lines are examined. Most problems (1-15 min if the symmetry is as low as monoclinic (with a > 2 GHz processor); more time is needed for triclinic cases. Attempts are shown to be successful for the indexation of two-phase samples in simple cases (combining orthorhombic or higher symmetries). (c) 2004 International Centre for Diffraction Data. |
| C1 | Univ Maine, Lab Flourures, CNRS, UMR 6010, F-72085 Le Mans, France. |
| RP | Le Bail, A, Univ Maine, Lab Flourures, CNRS, UMR 6010, Ave O Messiaen, F-72085 Le Mans, France. |
| EM | alb@cristal.org |
| TC | 2 |
| PD | SEP |
| PY | 2004 |
| VL | 19 |
| IS | 3 |
| BP | 249 |
| EP | 254 |
| UT | ISI:000223780200006 |
| ER |
| PT | J |
| AU | Nechad, H Helmstetter, A El Guerjouma, R Sornette, D |
| TI | Andrade and critical time-to-failure laws in fiber-matrix composites: Experiments and model |
| SO | JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS |
| AB | We present creep experiments on fiber composite materials. Recorded strain rates and acoustic emission (AE) rates exhibit both a power-law relaxation in the primary creep regime and a power-law acceleration before global failure. In particular, we observe time-to-failure power-laws in the tertiary regime for acoustic emissions over four decades in time. We also discover correlations between some characteristics of the primary creep (exponent of the power-law and duration) and the time to failure of the samples. This result indicates that the tertiary regime is dependent on the relaxation and damage processes that occur in the primary regime and suggests a method for predicting the time to failure based on the early time recording of the strain rate or AE rate. We consider a simple model of representative elements, interacting via democratic load sharing, with a large heterogeneity of strengths. Each element consists of a non-linear dashpot in parallel with a spring. This model recovers the experimental observations of the strain rate as a function of time. (c) 2005 Elsevier Ltd. All rights reserved. |
| C1 | CNRS, LAUM 6613, F-72085 Le Mans, France. Univ Maine, F-72085 Le Mans, France. Inst Natl Sci Appl, F-69621 Villeurbanne, France. CNRS, UMR 5510, Etud Met Phys & Phys Mat Grp, F-69621 Villeurbanne, France. Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90095 USA. Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90095 USA. Univ Nice, F-06108 Nice, France. CNRS, Phys Mat Condensee Lab, UMR6622, F-06108 Nice, France. |
| RP | El Guerjouma, R, CNRS, LAUM 6613, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | rachid.elguerjouma@insa-lyon.fr |
| TC | 2 |
| PD | MAY |
| PY | 2005 |
| VL | 53 |
| IS | 5 |
| BP | 1099 |
| EP | 1127 |
| UT | ISI:000228680000007 |
| ER |
| PT | J |
| AU | Bentayeb, FZ Alleg, S Bouzabata, B Greneche, JM |
| TI | Study of alloying mechanisms of ball milled Fe-Cr and Fe-Cr-Co powders |
| SO | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS |
| AB | Mechanical alloyed Fe-31Cr and Fe-31Cr-12Co powder mixtures have been investigated using Fe-57 Mossbauer spectrometry and X-ray diffraction (XRD). The ball milling of Fe-31C and Fe-31Cr-12Co mixtures during 3 h results, respectively, in formation of nanostructured (Fe,Cr) and (Fe,Cr,Co) solid solutions with body-centred cubic (BCC) and two metastable paramagnetic structures: face centred cubic (FCC) and primitive cubic (PC). The corresponding Mossbauer spectra present a single-line component relative to the paramagnetic phases superposed to a sextet attributed to a BCC disordered alloy. The analysis of the hyperfine field distribution in terms of Fe atomic surroundings further prove the reality of atomic alloying after this short time of milling. The progress of the milling procedure leads to a very disordered structure of weakly magnetic solid solution. Different fitting procedures have been used to model the structural and magnetic changes. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, Lab Phys Etat Condense, UMR 6087, F-72085 Le Mans 9, France. Univ Annaba, Dept Phys, Lab Magnetisme & Spectroscopie Solides, Annaba 23000, Algeria. |
| RP | Greneche, JM, Univ Maine, Lab Phys Etat Condense, UMR 6087, Ave Olivier Messiaen, F-72085 Le Mans 9, France. |
| EM | greneche@univ-lemans.fr |
| TC | 2 |
| PD | MAR |
| PY | 2005 |
| VL | 288 |
| BP | 282 |
| EP | 296 |
| UT | ISI:000227480800036 |
| ER |
| PT | J |
| AU | Rozet, F Mandron, E Arroyo, C Andrews, H Cathelineau, X Mombet, A Cathala, N Vallancien, G |
| TI | Laparoscopic sacral colpopey approach for genito-urinary prolapse: Experience with 363 cases |
| SO | EUROPEAN UROLOGY |
| AB | Objective: To evaluate the surgical outcome, complications and benefits
of laparoscopic double promonto-fixation for patients with pelvic
prolapse. Methods: Women with genito-urinary prolapse underwent a transperitoneal placement of a 100% polyester mesh on the anterior vaginal wall and a posterior mesh on the levator ani muscle. Both of these were anchored to the sacral promontory. A TVT was placed simultaneously in patients who had concurrent stress urinary incontinence. Results: A total of 363 patients were operated upon between 1996 and 2002. Their mean age was 63 (range 35-78), average follow-up was 14.6 months, the mean operating time was 97 minutes. There were 8 conversions due to anesthetic or surgical difficulties. Follow up was done by a postal questionnaire and physical examination at 6 months and then yearly. 96% were satisfied with the results of their operation and no patients complained of sexual dysfunction. There was a 4% recurrence rate of prolapse, 3 vaginal erosions, 2 urinary retentions that required TVT section, 1 bowel incarcerations, 1 spondylitis and 2 mesh infection. Conclusions: Laparoscopic promonto-fixation is feasible and highly effective technique that offers good long-term results with complication rates similar to open surgery, with the added benefits of minimally invasive surgery. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Paris 05, Inst Mutualiste Montsouris, Dept Urol, F-75674 Paris, France. Clin Pre, Le Mans, France. |
| RP | Rozet, F, Univ Paris 05, Inst Mutualiste Montsouris, Dept Urol, 42 Blvd Jourdan, F-75674 Paris, France. |
| EM | francois.rozet@imm.fr |
| TC | 2 |
| PD | FEB |
| PY | 2005 |
| VL | 47 |
| IS | 2 |
| BP | 230 |
| EP | 236 |
| UT | ISI:000226767600014 |
| ER |
| PT | J |
| AU | Picart, P Leval, J Mounier, D Gougeon, S |
| TI | Some opportunities for vibration analysis with time averaging in digital Fresnel holography |
| SO | APPLIED OPTICS |
| AB | Features offered by the combination of time averaging and digital Fresnel holography are investigated. In particular, we introduce the concept of the zero-crossing phase of Bessel fringes. which allows a highly contrasted determination of the dark fringes in the hologram. We discuss some particularities: of the digital reconstruction and show how time-averaged digital holography can be used to study vibration drifts. Experiment results are presented in the case of a loudspeaker under a Sinusoidal excitation; digital and analogical holography are also compared. (C) 2005 Optical Society of America. |
| C1 | Ecole Natl Super Ingn Mans, F-72085 Le Mans 9, France. Univ Maine, Acoust Lab, UMR 6613, CNRS, F-72085 Le Mans, France. |
| RP | Picart, P, Ecole Natl Super Ingn Mans, Rue Aristote, F-72085 Le Mans 9, France. |
| EM | pascal.picart@univ-lemans.fr |
| TC | 2 |
| PD | JAN 20 |
| PY | 2005 |
| VL | 44 |
| IS | 3 |
| BP | 337 |
| EP | 343 |
| UT | ISI:000226461500005 |
| ER |
| PT | J |
| AU | Moumeni, H Alleg, S Greneche, JM |
| TI | Structural properties of Fe50Co50 nanostructured powder prepared by mechanical alloying |
| SO | JOURNAL OF ALLOYS AND COMPOUNDS |
| AB | Mechanical alloying of high purity elemental powders in a planetary ball mill (Fritsch pulverisette 7) was used to prepare nanocrystalline Fe and equiatomic FeCo powders. Morphology changes, structural properties and local iron environment variations have been investigated by Scanning Electron Microscopy, X-ray diffraction and Fe-57 Mossbauer spectrometry. X-ray diffraction profile fitting, reveals the Co allotropic transformation from fcc to hcp form at the early stage of milling. The milling route implies diffusion of hcp-Co into alpha (Fe) leading to the formation, after 12 h, of the bcc-FeCo solid solution with a lattice parameter close to a = 0.2861 nm and a grain size of about 12 nm. The analysis of the evolution of the hyperfine magnetic field distribution, indicates that the disordered bcc-FeCo solid solution is formed after 12 h of milling, through the interdiffusion of Fe and Co elemental powders. The average hyperfine magnetic field of the bcc-FeCo solid solution (B = 35 T) suggests that the disordered Fe50Co50 system is formed. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Annaba, Lab Magnetisme Spect Solides, Dept Phys, Fac Sci, Annaba 23000, Algeria. Univ Maine, Lab Phys Etat Condense, UMR 6087, CNRS, F-72085 Le Mans 9, France. |
| RP | Moumeni, H, Univ Annaba, Lab Magnetisme Spect Solides, Dept Phys, Fac Sci, BP 12,LM2S, Annaba 23000, Algeria. |
| EM | hmoumeni@yahoo.fr |
| TC | 2 |
| PD | JAN 11 |
| PY | 2005 |
| VL | 386 |
| IS | 1-2 |
| BP | 12 |
| EP | 19 |
| UT | ISI:000226186300004 |
| ER |
| PT | J |
| AU | Adil, K Ben Ali, A Dujardin, G Dhal, R Leblanc, M Maisonneuve, V |
| TI | Ternary and tetrahedral symmetry in hybrid fluorides, fluoride carbonates and carbonates |
| SO | JOURNAL OF FLUORINE CHEMISTRY |
| AB | Tren amine cations and carbonate anions adopt a ternary symmetry while tetra amine cations are tetrahedral. The symmetry of these constitutive ions influences strongly the nature of the solids which crystallise from solutions. Large fluorinated aluminate polyanions with tetrahedral symmetry appear in the presence of tren amine, while infinite chains of AIF(6) octahedra are observed with tetra amine and that noncentrosymmetric structures are frequently encountered in rare earth fluoride carbonates. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, Fac Sci & Tech, Lab Oxydes & Fluorures, CNRS,UMR 6010,IRIM2F,FR 2575, F-72085 Le Mans 09, France. Univ Maine, Fac Sci & Tech, Lab Chim Organ & Macromol, CNRS,UMR 6011,IRIM2F,FR 2575, F-72085 Le Mans, France. |
| RP | Leblanc, M, Univ Maine, Fac Sci & Tech, Lab Oxydes & Fluorures, CNRS,UMR 6010,IRIM2F,FR 2575, Ave Olivier Messiaen, F-72085 Le Mans 09, France. |
| EM | marc.leblanc@umv-lemans.fr vincent.maisonneuve@univ-lemans.fr |
| TC | 2 |
| PD | NOV |
| PY | 2004 |
| VL | 125 |
| IS | 11 |
| BP | 1709 |
| EP | 1714 |
| UT | ISI:000225892900017 |
| ER |
| PT | J |
| AU | Pouzot, M Nicolai, T Visschers, RW Weijers, M |
| TI | X-ray and light scattering study of the structure of large protein aggregates at neutral pH |
| SO | FOOD HYDROCOLLOIDS |
| AB | The structure of large ovalbumin and beta-lactoglobulin aggregates formed after heat-denaturation at neutral pH was studied using a combination of light and small-angle X-ray scattering. The effect of the electrostatic interactions was investigated by varying the ionic strength. The results were compared with images obtained using cryo-TEM. The structure of ovalbumin aggregates is compatible with that of semi-flexible strings of monomers that are more flexible and increasingly branched with increasing ionic strength. The persistence length increases with decreasing ionic strength. beta-lactoglobulin aggregates consist of clusters of primary aggregates that are formed in the first step of the aggregation process. At low ionic strength the association of primary aggregates is mostly head to tail, while with increasing ionic strength denser clustering of the primary aggregates is observed. (C) 2004 Elsevier Ltd. All rights reserved. |
| C1 | Wageningen Ctr Food Sci, NL-6700 AN Wageningen, Netherlands. Univ Maine, CNRS, UMR, F-72085 Le Mans 9, France. Univ Wageningen & Res Ctr, Dept Agrotechnol & Food Sci, Lab Phys Chem & Colloid Sci, NL-6703 HB Wageningen, Netherlands. NIZO Food Res, NL-6718 ZB Ede, Netherlands. |
| RP | Weijers, M, Wageningen Ctr Food Sci, Diedenweg 20, NL-6700 AN Wageningen, Netherlands. |
| EM | mireille.weijers@nizo.nl |
| TC | 2 |
| PD | MAR |
| PY | 2005 |
| VL | 19 |
| IS | 2 |
| BP | 231 |
| EP | 238 |
| UT | ISI:000225867300006 |
| ER |
| PT | J |
| AU | Imrie, K Belch, A Pettengell, R Rueda, A McKendrick, J Solal-Celigny, P Offner, F Bence-Buckler, I Walewski, J Raposo, J Marcus, R |
| TI | Rituximab plus CVP chemotherapy vs. CVP alone as first-line treatment for follicular lymphoma: Treatment effect according to baseline prognostic factors. |
| SO | JOURNAL OF CLINICAL ONCOLOGY |
| C1 | Toronto Sunnybrook Reg Canc Ctr, Toronto, ON, Canada. Cross Canc Inst, Edmonton, AB T6G 1Z2, Canada. Univ London St Georges Hosp, Sch Med, London SW17 0RE, England. Univ Malaga, Hosp Clin, E-29071 Malaga, Spain. Box Hill Hosp, Box Hill, Vic, Australia. Clin Victor Hugo, Le Mans, France. Univ Ziekenhuis Gent, Ghent, Belgium. Ottawa Hosp, Ottawa, ON, Canada. M Sklodowska Curie Mem Inst, Warsaw, Poland. Hosp Santa Maria, Lisbon, Portugal. Addenbrookes Hosp, Cambridge, England. |
| TC | 1 |
| PD | JUN 1 |
| PY | 2005 |
| VL | 23 |
| IS | 16 |
| PN | Part 1 Suppl. S |
| BP | 566S |
| EP | 566S |
| UT | ISI:000230326603484 |
| ER |
| PT | J |
| AU | Friese, K Gesland, JY Grzechnik, A |
| TI | The structure of multiple twinned CsMgInF6 and its relationship to other pyrochlore derived fluorides |
| SO | ZEITSCHRIFT FUR KRISTALLOGRAPHIE |
| AB | The pyrochlore derived fluoride structures with general composition AM(2+)M(3+)F(6) crystallize in space groups which are in group-subgroup relationship to Fd $(3) over bar $m, the space group of the archetype pyrochlore structure. All orthorhombic representatives investigated so far show an ordered M2+/M3+ distribution over two symmetrically independent octahedral sites. CsMgInF6 crystallizes in space group puma with lattice parameters a = 7.5285(1), b = 7.5285(1) and c = 10.6459(1) angstrom. The investigated crystal was a second degree twin, where the independent twin elements are a combination of the three- and fourfold rotation axes of the archetype cubic lattice. The pseudosymmetry of the compound with respect to space group Imma is extremely high and a reliable decision about the correct symmetry was only possible when inspecting partial agreement factors for the weak reflections h + k + l = 2n + 1 only. With respect to the other orthorhombic pyrochlore derived ternary fluorides, the present compound differs in the fact that the M2+/M3+ ions are completely disordered in CsMgInF6. |
| C1 | Univ Pais Vasco, Dept Fis Mat Condensada, E-48080 Bilbao, Spain. Univ Maine, URA 807, F-72025 Le Mans, France. |
| RP | Friese, K, Univ Pais Vasco, Dept Fis Mat Condensada, Apdo 644, E-48080 Bilbao, Spain. |
| EM | wmbfrxxk@lg.ehu.es |
| TC | 1 |
| PY | 2005 |
| VL | 220 |
| IS | 7 |
| BP | 614 |
| EP | 621 |
| UT | ISI:000230672300005 |
| ER |
| PT | J |
| AU | Wimmer, E |
| TI | The growing importance of computations in materials science. Current capabilities and perspectives |
| SO | MATERIALS SCIENCE-POLAND |
| AB | Materials scientists are facing unprecedented challenges in many areas, such as energy conversion and storage, microelectronics, telecommunication, display technologies, catalysis, and structural materials. Experimental methods generate increasing amounts of data. New computational methods, high-performance computer hardware, and powerful software environments are evolving rapidly. As a result, the importance of computational materials science is growing. The following cases illustrate the current capabilities: computed thermochemical and mechanical properties of metal hydrides show trends in the heats of formation and the hydrogen-induced softening of elastic moduli; a study of the effect of impurities on the strength of a Ni grain boundary reveals hydrogen as an embrittler and boron as a strengthener; ab initio phonon calculations for hydrogen impurities in aluminum show a temperature-dependent site - preference; the screened-exchange approach predicts accurate energy band gaps of semiconductors; a computational screening of hydro-desulphurization catalysts points to new combinations. The major current challenges for computational materials science include more accurate total energies, unified methods to deal with multi-phase systems, e. g., solid/liquid, novel approaches to determine complex kinetic processes, and novel concepts to bridge the atomistic and the macroscopic scales. |
| C1 | Mat Design Sarl, F-72000 Le Mans, France. |
| RP | Wimmer, E, Mat Design Sarl, 44 Av FA Bartholdi, F-72000 Le Mans, France. |
| EM | ewimmer@materialsdesign.com |
| TC | 1 |
| PY | 2005 |
| VL | 23 |
| IS | 2 |
| BP | 325 |
| EP | 345 |
| UT | ISI:000230755000001 |
| ER |
| PT | J |
| AU | Chen, XQ Wolf, W Podloucky, R Rogl, R |
| TI | Ab initio study of ground-state properties of the Laves phase compounds TiCr2,ZrCr2, and HfCr2 |
| SO | PHYSICAL REVIEW B |
| AB | By the application of an ab initio density functional approach the structural and phase stabilities, enthalpies of formation, electronic structures, and elastic properties for the isoelectronic Laves phase compounds TiCr2, ZrCr2, and HfCr2 in the cubic C15, and hexagonal C14 and C36 structures have been investigated. In addition, for the C14 and C15 structures of ZrCr2 phonon dispersions and densities of states, temperature dependent free energies, and point defect properties have been derived from ab initio calculations. The comparison of the density functional data to the few existing experimental results proves the validity of the ab initio approach. Results for ZrCr2 and ZrMn2 are compared in order to corroborate the structural degeneracy for ZrMn2 as predicted recently. |
| C1 | Univ Vienna, Inst Phys Chem, A-1090 Vienna, Austria. Mat Design SARL, F-72000 Le Mans, France. |
| RP | Chen, XQ, Univ Vienna, Inst Phys Chem, Liechtensteinstr 22A, A-1090 Vienna, Austria. |
| TC | 1 |
| PD | MAY |
| PY | 2005 |
| VL | 71 |
| IS | 17 |
| AR | 174101 |
| UT | ISI:000229935000021 |
| ER |
| PT | J |
| AU | Zaitsev, VY Nazarov, VE Tournat, V Gusev, VE Castagnede, B |
| TI | Luxemburg-Gorky effect in a granular medium: Probing perturbations of the material state via cross-modulation of elastic waves |
| SO | EUROPHYSICS LETTERS |
| AB | A nonlinear effect consisting of transfer of modulation from one amplitude-modulated elastic wave, the "pump" wave, to the second initially monochromatic probe wave has been recently introduced in nonlinear acoustics by analogy with radio waves. For the first time, this effect is applied to probe perturbations of the state of a granular material induced by shocks, "seismic events". The experiments indicate a much stronger variability of the nonlinearity-induced modulation sidelobes in comparison with changes in the components at the fundamental frequencies of the probe and pump waves. Another new feature revealed in the experiments is that the transitional shock-induced variations in the amplitudes of the modulation sidelobes are several times stronger than the relaxed, residual values of the changes. The effects observed suggest interesting possibilities to application in active acoustic/seismic monitoring schemes. |
| C1 | Inst Appl Phys, Nizhnii Novgorod 603950, Russia. Univ Maine, F-72085 Le Mans, France. |
| RP | Zaitsev, VY, Inst Appl Phys, 46 Uljanova St, Nizhnii Novgorod 603950, Russia. |
| TC | 1 |
| PD | JUN |
| PY | 2005 |
| VL | 70 |
| IS | 5 |
| BP | 607 |
| EP | 613 |
| UT | ISI:000229819000007 |
| ER |
| PT | J |
| AU | Chen, XQ Podloucky, R Rogl, P Wolf, W |
| TI | Comment on "Proposed model for calculating the standard formation enthalpy of binary transition-metal systems" [Appl. Phys. Lett. 81, 1219 (2002)] |
| SO | APPLIED PHYSICS LETTERS |
| C1 | Univ Vienna, Inst Phys Chem, A-1090 Vienna, Austria. Mat Design SARL, F-72000 Le Mans, France. |
| RP | Chen, XQ, Univ Vienna, Inst Phys Chem, Liechtensteinstr 22A, A-1090 Vienna, Austria. |
| EM | xingqiu.chen@univie.ac.at |
| TC | 1 |
| PD | MAY 23 |
| PY | 2005 |
| VL | 86 |
| IS | 21 |
| AR | 216103 |
| UT | ISI:000229544200093 |
| ER |
| PT | J |
| AU | Oudard, S Banu, E Beuzeboc, P Voog, E Dourthe, LM Hardy-Bessard, AC Linassier, C Scotte, F Banu, A Coscas, Y Guinet, F Poupon, MF |
| TI | Multicenter randomized phase II study of two schedules of docetaxel, estramustine, and prednisone versus mitoxantrone plus prednisone in patients with metastatic hormone-refractory prostate cancer |
| SO | JOURNAL OF CLINICAL ONCOLOGY |
| AB | Purpose Mitoxantrone-corticosteroid is currently the standard
palliative treatment in hormone-refractory prostate cancer (HRPC)
patients. Recent clinical trials documented the high activity of the
docetaxel-estramustine combination. We conducted a randomized phase II
study to evaluate prostate-specific antigen (PSA) response (primary end
point) and safety of two docetaxel-estramustine-prednisone (DEP)
regimens and mitoxantrone-prednisone (MP). Patients and Methods One hundred thirty metastatic HRPC patients were randomly assigned to receive docetaxel (70 mg/m(2) on day 2 or 35 mg/m(2) on days 2 and 9 of each 21-day cycle) and estramustine (280 mg PO tid on days 1 through 5 and 8 through 12) or mitoxantrone 12 mg/m(2) every 3 weeks; all patients received prednisone (10 mg daily). Results One hundred twenty-seven patients were assessable for PSA response and safety. A >= 50 % PSA decline was found in a greater percentage of patients in the docetaxel arms (67 % and 63 %) compared with MP (18 %; P = .0001). Median time to PSA progression was five times longer with DEP than with MP (8.8 and 9.3 v 1.7 months, respectively; P = .000001). Overall survival was better in the docetaxel arms (18.6 and 18.4 months) compared with the MP arm (13.4 months), but not significantly so (P = .3). Crossover rates differed significantly among treatment arms (16 %, 10 %, and 48 % in arms A, B, and C, respectively; P =.00001). Treatment-related toxicities were mild and mainly hematologic. Conclusion The results of this randomized phase II study showed significantly higher PSA decline <= 50 % and longer times to progression in HRPC patients receiving DEP-based chemotherapy than MP, and that DEP could be proposed in this setting. (c) 2005 by American Society of Clinical Oncology |
| C1 | Georges Pompidou European Hosp, Dept Med Oncol, F-75908 Paris, France. Inst Curie, Dept Oncol, F-75231 Paris, France. Val de Grace Hosp, Dept Oncol, Paris, France. Assoc Rech Therapeut Innovantes, Cancerol Grp, Paris, France. Mantes Hosp, Dept Radiotherapy, Mantes, France. Victor Hugo Clin, Le Mans, France. Armoricaine Clin, Dept Oncol, St Brieuc, France. Roseraie European Hosp, Aubervilliers, France. Bretonneau Hosp, Dept Oncol, Tours, France. |
| RP | Oudard, S, Georges Pompidou European Hosp, Dept Med Oncol, 20 Rue Leblanc, F-75908 Paris, France. |
| EM | stephane.oudard@hop.egp.ap-hop-paris.fr |
| TC | 1 |
| PD | MAY 20 |
| PY | 2005 |
| VL | 23 |
| IS | 15 |
| BP | 3343 |
| EP | 3351 |
| UT | ISI:000229352400010 |
| ER |
| PT | J |
| AU | Penelet, G Job, S Gusev, V Lotton, P Bruneau, M |
| TI | Dependence of sound amplification on temperature distribution in annular thermoacoustic engines |
| SO | ACTA ACUSTICA UNITED WITH ACUSTICA |
| AB | The aim of this paper is to study the influence of the shape of the temperature distribution on the thermoacoustic amplification in an annular thermoacoustic prime mover. An analytical model is presented and the acoustic field in the whole device is computed for an arbitrary temperature distribution. The obtained results demonstrate dependence of the thermoacoustic amplification not only on the maximum temperature difference but also significantly on the details of the spatial temperature distribution, which influence the structure of the acoustic field throughout the thermoacoustic core. These results provide the opportunity to predict qualitatively the variation of the thermoacoustic amplification, when the temperature distribution is modified by acoustic streaming or acoustically enhanced thermal conductivity. It may be of primary importance when trying to explain the complicated, experimentally observed dynamics of the transient process of acoustic wave amplification and saturation. |
| C1 | Univ Maine, Acoust Lab, F-72085 Le Mans, France. Univ Maine, Lab Phys Etat Condense, F-72085 Le Mans, France. |
| RP | Penelet, G, Univ Maine, Acoust Lab, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| TC | 1 |
| PD | MAY-JUN |
| PY | 2005 |
| VL | 91 |
| IS | 3 |
| BP | 567 |
| EP | 577 |
| UT | ISI:000229306600019 |
| ER |
| PT | J |
| AU | Bensebaa, N Alleg, S Greneche, JM |
| TI | Phase transformations of mechanically alloyed Fe-Cr-P-C powders |
| SO | JOURNAL OF ALLOYS AND COMPOUNDS |
| AB | Fe77Cr4P8C11 alloy was prepared by mechanical alloying (MA) of elemental Fe, Cr, P and C (graphite) powders in a planetary ball mill type Fritsch P7 under argon atmosphere. Morphological changes, microstructural and structural evolutions during ball milling were followed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fe-57 Mossbauer spectrometry (MS) as a function of the milling time. The crystallite size refinement against the milling time is accompanied by an increase of the atomic level strain. After 6 h of milling, the dissolution of phosphorous into the alpha-Fe matrix is evidenced by the formation of a small amount (similar to 4%) of the paramagnetic Fe2P phase as revealed by Mossbauer spectrometry. The complete mixing of all the elemental powders at the atomic level is achieved at 12 h of milling and results, after 24 h, in an amorphous matrix where nanocrystalline phosphides and carbides with nearly equal crystallite sizes are embedded. Further milling time up to 190 h gives rise to the formation of both the orthorhombic and the hexagonal (FeCr)(7)C-3 carbide as well as the superparamagnefic epsilon'-Fe2.2C carbide through the recrystallisation of the amorphous phase. (c) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, Fac Sci, Lab Phys Etat Condense, UMR 6087, F-72085 Le Mans, France. Univ Annaba, Fac Sci, Dept Phys, Lab Magnet & Spect Solides, Annaba 23000, Algeria. |
| RP | Greneche, JM, Univ Maine, Fac Sci, Lab Phys Etat Condense, UMR 6087, F-72085 Le Mans, France. |
| EM | greneche@univ-lemans.fr |
| TC | 1 |
| PD | MAY 3 |
| PY | 2005 |
| VL | 393 |
| IS | 1-2 |
| BP | 194 |
| EP | 203 |
| UT | ISI:000228716700034 |
| ER |
| PT | J |
| AU | Emery, J Massiot, D Lacorre, P Laligant, Y Conder, K |
| TI | O-17 NMR in room temperature phase of La2Mo2O9 fast oxide ionic conductor |
| SO | MAGNETIC RESONANCE IN CHEMISTRY |
| AB | A room temperature O-17 NMR study of La2MO2O9, a fast oxide ionic conductor exhibiting a phase transition at 580 degrees C between a low-temperature a-phase and a high-temperature beta-phase, is presented. Four partly overlapping quasi-continuous distributions of oxygen sites are evidenced from ID magic angle spinning (MAS) and 2D triple quantum MAS NMR experiments. They can be correlated with the three oxygen sites O1, O2 and O3 of the high-temperature crystal structure. The low-temperature phase is characterized by two distributed sites of type O1, which proves that the symmetry is lower than in the cubic high-temperature phase. Two-dimensional experiments show that there is no dynamic exchange process, on the NMR time-scale, between the different oxygen sites at room temperature, which agrees well with conductivity results. Copyright (c) 2005 John Wiley & Sons, Ltd. |
| C1 | Univ Maine, Inst Rech Ingn Mol & Mat Fonctionels, CNRS, FR 2575,Lab Phys Etat Condense,UMR 6087, F-72085 Le Mans, France. Inst Rech Ingn Mol & Mat Fonctionels, CNRS, FR 2575, Ctr Rech Mat Haute Temp,UPR 4212, F-45071 Orleans, France. Lab Oxydes & Fluorures, UMR 6010, F-72085 Le Mans, France. Swiss Fed Inst Technol, Lab Newton Scattering, CH-5232 Villigen, Switzerland. PSI, CH-5232 Villigen, Switzerland. |
| RP | Emery, J, Univ Maine, Inst Rech Ingn Mol & Mat Fonctionels, CNRS, FR 2575,Lab Phys Etat Condense,UMR 6087, Ave O Messiaen, F-72085 Le Mans, France. |
| EM | joel.emery@univ-lemans.fr |
| TC | 1 |
| PD | MAY |
| PY | 2005 |
| VL | 43 |
| IS | 5 |
| BP | 366 |
| EP | 371 |
| UT | ISI:000228570500003 |
| ER |
| PT | J |
| AU | Tilly, D Castanet, AS Mortier, J |
| TI | Controlling chemoselectivity in reactions of unprotected naphthalene-1-carboxylic acid with strong bases |
| SO | CHEMISTRY LETTERS |
| AB | Whereas treatment of unprotected naphthalene-1-carboxylic acid with alkyllithiums (RLi) affords 1,4-addition products, the reaction with LTMP/Me3SiCl under in situ quench conditions provides the arylsilane arising out from the substitution of lithium 2-lithionaphthalene carboxylate with Me3SiCl. With the Lochmann-Schlosser superbase (n-BuLi/t-BuOK), metalation occurs preferentially in the position adjacent to CO2Li although the peri and ortho, peri-dilithiated species are also formed. |
| C1 | Univ Maine, F-72085 Le Mans, France. Fac Sci, CNRS, Unite Chim Organ Mol & Macromol, UMR 6011, F-72085 Le Mans, France. |
| RP | Mortier, J, Univ Maine, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| TC | 1 |
| PD | MAR |
| PY | 2005 |
| VL | 34 |
| IS | 3 |
| BP | 446 |
| EP | 447 |
| UT | ISI:000227710300084 |
| ER |
| PT | J |
| AU | Tilly, D Samanta, SS De, A Castanet, AS Mortier, J |
| TI | Contribution to the study of the mechanism of directed remote-metalation. Evidence for the intermediacy of a geminal dimetallo dialkoxide C(OM)(2) (M = Li, K), first doubly charged director of ortho metalation |
| SO | ORGANIC LETTERS |
| AB | The mechanism of the metalation of 2-biphenyl carboxylic acid (1) with the Lochmann-Schlosser superbase was determined by deuteriolysis. Both ortho (C-3) and remote (C-2) positions are metalated. The C-2-metalated species 2 cyclizes instantaneously. Under suitable conditions, the doubly charged geminal dimetallo dialkoxide group C(OM)(2) 4 directs metalation in the adjacent position (C-1), affording a stable 1-metallo-9H-fluorene-9,9-dimetallo dialkoxide 5 that can be trapped by diverse electrophiles to give 1-substituted 9H-fluoren-9-ones 7 and 9 after acidic workup. |
| C1 | Univ Maine, F-72085 Le Mans 9, France. CNRS, Unite Chim Organ Mol & Macromol, UMR 6011, F-72085 Le Mans, France. Indian Assoc Cultivat Sci, Dept Organ Chem, Calcutta 700032, W Bengal, India. |
| RP | Tilly, D, Univ Maine, Ave Olivier Messiaen, F-72085 Le Mans 9, France. |
| EM | jacques.mortier@univ-lemans.fr |
| TC | 1 |
| PD | MAR 3 |
| PY | 2005 |
| VL | 7 |
| IS | 5 |
| BP | 827 |
| EP | 830 |
| UT | ISI:000227313400020 |
| ER |
| PT | J |
| AU | Boucle, J Kassiba, A Makowska-Janusik, M Sanetra, J Herlin-Boime, N Bulou, A Kodjikian, S |
| TI | Electro-optic phenomena in guest-host films of PMMA and SiC nanocrystals |
| SO | OPTICS COMMUNICATIONS |
| AB | Electro-optic (EO) phenomena are measured in electrically poled films (0.5 mum) based on large-sized SiC nanocrystallites (nc-SiC) as chromophores and polymethyl-methacrylate (PMMA) as host matrices. Both linear electro-optic (LEO) and quadratic coefficients are obtained, and, for nc-SiC contents ranging from 1% to 3% by weight units, the largest achieved effective LEO coefficient is found close to 26 pmN at lambda = 0.633 mum. Comparison with the electrically active host matrix of poly(vinyl-carbazole) (PVK) shows that the polarization at the nc-SiC boundaries with the polymer play a crucial role on the EO phenomena. Moreover, the relative interface area between the polymer and the SiC nanocrystallites contributes critically to the observed electro-optic, effects. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, CNRS, Inst Rech Ingn Mol & Mat Fonctionnels FR, Lab Phys Etat Condense,UMR 6087, F-72085 Le Mans 9, France. CEA Saclay, DSM, CNRS,URA 2453, Lab Francis Perrin,Serv Photons Atomes & Mol, F-91191 Gif Sur Yvette, France. Pedagog Univ Czestochowa, Inst Phys, PL-42201 Czestochowa, Poland. Krakow Tech Univ, Inst Phys, PL-30084 Krakow, Poland. |
| RP | Boucle, J, Univ Maine, CNRS, Inst Rech Ingn Mol & Mat Fonctionnels FR, Lab Phys Etat Condense,UMR 6087, 2575 Ave Olivier Messiaen, F-72085 Le Mans 9, France. |
| EM | johann.boucle@univ-lemans.fr kassiba@univ-lemans.fr |
| TC | 1 |
| PD | FEB 15 |
| PY | 2005 |
| VL | 246 |
| IS | 4-6 |
| BP | 415 |
| EP | 420 |
| UT | ISI:000227311900019 |
| ER |
| PT | J |
| AU | Mongondry, P Tassin, JF Nicolai, T |
| TI | Revised state diagram of Laponite dispersions |
| SO | JOURNAL OF COLLOID AND INTERFACE SCIENCE |
| AB | We propose a state diagram of charged disk-like mineral particle (Laponite) dispersions as a function of the Laponite concentration (C) and the concentration of added salt (C-s), based on simple observation and light-scattering measurements. At low C or high C-s the dispersions separate into two domains due to sedimentation of Laponite aggregates, while at high C and low C-s they form homogeneous gels that do not flow upon tube reversal. The aggregation rate and the structure factor of the Laponite dispersions is determined with light scattering as a function of C and C-s. We discuss in detail the controversy on the origin of gelation of Laponite dispersions in the absence of added salt. We argue that aggregation rather than glass formation causes gelation. (C) 2004 Elsevier Inc. All rights reserved. |
| C1 | Univ Maine, CNRS, UMR 6120, F-72085 Le Mans 9, France. |
| RP | Nicolai, T, Univ Maine, CNRS, UMR 6120, F-72085 Le Mans 9, France. |
| EM | taco.nicolai@univ-lemans.fr |
| TC | 1 |
| PD | MAR 15 |
| PY | 2005 |
| VL | 283 |
| IS | 2 |
| BP | 397 |
| EP | 405 |
| UT | ISI:000227393300016 |
| ER |
| PT | J |
| AU | Boeckx, L Leclaire, P Khurana, P Glorieux, C Lauriks, W Allard, JF |
| TI | Investigation of the phase velocities of guided acoustic waves in soft porous layers |
| SO | JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA |
| AB | A new experimental method for measuring the phase velocities of guided acoustic waves in soft poroelastic or poroviscoelastic plates is proposed. The method is based on the generation of standing waves in the material and on the spatial Fourier transform of the displacement profile of the upper surface. The plate is glued on a rigid substrate so that it has a free upper surface and a nonmoving lower surface. The displacement is measured with a laser Doppler vibrometer along a line corresponding to the direction of propagation of plane surface waves. A continuous sine with varying frequencies was chosen as excitation signal to maximize the precision of the measurements. The spatial Fourier transform provides the wave numbers, and the phase velocities are obtained from the relationship between wave number and frequency. The phase velocities of several guided modes could be measured in a highly porous foam saturated by air. The modes were also studied theoretically and, from the theoretical results, the experimental results, and a fitting procedure, it was possible to determine the frequency behavior of the complex shear modulus and of the complex Poisson ratio from 200 Hz to 1.4 kHz, in a frequency range higher than the traditional methods. (C) 2005 Acoustical Society of America. |
| C1 | Katholieke Univ Leuven, Lab Akoestiek & Therm Fys, B-3001 Heverlee, Belgium. Univ Maine, Acoust Lab, UMR 6613, CNRS, F-72085 Le Mans, France. FWO Vlaanderen, Vlaardingen, Netherlands. |
| RP | Boeckx, L, Katholieke Univ Leuven, Lab Akoestiek & Therm Fys, Celestijnenlaan 200D, B-3001 Heverlee, Belgium. |
| EM | walter.lauriks@fys.kuleuven.ac.be |
| TC | 1 |
| PD | FEB |
| PY | 2005 |
| VL | 117 |
| IS | 2 |
| BP | 545 |
| EP | 554 |
| UT | ISI:000226986900009 |
| ER |
| PT | J |
| AU | Gohier, F Castanet, AS Mortier, J |
| TI | The first regioselective metalation and functionalization of unprotected 4-halobenzoic acids |
| SO | JOURNAL OF ORGANIC CHEMISTRY |
| AB | By treatment with s-BuLi, s-BuLi/TMEDA, or t-BuLi at similar to-78 degreesC, 4-fluoro- and 4-chlorobenzoic acids (1a,b) are metalated preferentially in the position adjacent to the carboxylate. A complete reversal in regioselectivity is observed for 1a when treated with LTMP; a sequential process involving a rapid intraaggregate lithiation through a quasi dianion complex "QUADAC" is postulated to explain the unusual reactivity of Me2S2 and I-2. |
| C1 | Univ Maine, F-72085 Le Mans, France. CNRS, Fac Sci, Unite Chim Organ Mol & Macromol, F-72085 Le Mans, France. |
| RP | Mortier, J, Univ Maine, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | jacques.mortier@univ-lemans.fr |
| TC | 1 |
| PD | FEB 18 |
| PY | 2005 |
| VL | 70 |
| IS | 4 |
| BP | 1501 |
| EP | 1504 |
| UT | ISI:000227075600055 |
| ER |
| PT | J |
| AU | Pham, QN Bohnke, C Emery, J Bohnke, O Le Berre, F Crosnier-Lopez, MP Fourquet, JL Florian, P |
| TI | A new perovskite phase Li2xCa0.5-xTaO3: Li+ ion conductivity and use as pH sensor |
| SO | SOLID STATE IONICS |
| AB | Several compounds of a new solid solution Li2xCa0.5-xTaO3 (0.05less than or equal toxless than or equal to0.25) with perovskite structure have been synthesised by classical solid state reaction. It has been found that synthesis at 1773 K followed by a quenching in air was necessary to obtain a pure perovskite phase. The cell parameters and their variation with composition x have been determined through X-ray diffraction patterns analysis. Scanning electron microscopy showed the presence of grains of 10 mum size and of aggregates of 50-100 mum thick. Impedance spectroscopy in the frequency range from 10 MHz to I Hz and in the temperature range from 348 to 573 K has been carried out to determine the electrical properties. A bulk dc-conductivity slightly higher than 10(-6) S cm(-1) has been found at 473 K. Li-7 nuclear magnetic resonance relaxation times, T-1 and T-1p, vs. inverse of temperature have been measured to investigate the microscopic ionic motions of Li+ ions. Two motions of Li+ ions, a short and a long range one, are evidenced by these experiments. Furthermore, the Galvani potential of the ionic conductive membrane electrode, when put in contact with an aqueous solution, depends on the pH of the solution. The fast response on pH variation enables it then to be used as pH sensor in aqueous solutions. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, Lab Oxydes & Fluorures, UMR 6010, CNRS,Inst Rech Ingn Mol & Mat Fonct,FR 2575, F-72085 Le Mans 9, France. Univ Maine, Lab Phys Etat Condense, UMR 6087, CNRS,Inst Rech Ingn Mol & Mat Fonct,FR 2575, F-72085 Le Mans, France. CNRS, Ctr Res Mat Haute Temp, F-45071 Orleans 2, France. |
| RP | Bohnke, C, Univ Maine, Lab Oxydes & Fluorures, UMR 6010, CNRS,Inst Rech Ingn Mol & Mat Fonct,FR 2575, Ave O Messiaen, F-72085 Le Mans 9, France. |
| EM | odile.bohnke@univlemans.fr |
| TC | 1 |
| PD | FEB 14 |
| PY | 2005 |
| VL | 176 |
| IS | 5-6 |
| BP | 495 |
| EP | 504 |
| UT | ISI:000226990100010 |
| ER |
| PT | J |
| AU | Bally, V Pardoux, E Stoica, L |
| TI | Backward stochastic differential equations associated to a symmetric Markov process |
| SO | POTENTIAL ANALYSIS |
| AB | We consider a second order semi-elliptic differential operator L with
measurable coefficients, it! divergence form; and the semilinear
parabolic system of PDE's (partial derivative(t) + L)u(t, x) + f (t, x, u, delusigma) = 0, For All0 less than or equal to t less than or equal to T, u (T, x) = Phi (x). We solve this system in the framework of Dirichlet spaces and employ the symmetric Markov process of infinitesimal operator L in order to obtain a precised version of the solution u by solving the corresponding system of backward stochastic differential equations. This precised version verifies pointwise the so called "mild equation", which is equivalent to the above PDE. As a technical ingrediend we prove a representation theorem for arbitrary martingales which generalises a result of Fukushima for martingale additive functionals. The nonlinear term f satisfies a monotonicity condition with respect to u and a Lipschitz condition with respect to delu. |
| C1 | Univ Maine, Fac Sci, Dept Math, Lab Stat & Proc, F-72085 Le Mans 9, France. Univ Aix Marseille 1, LATP, CMI, F-13453 Marseille, France. Univ Bucharest, Fac Math, RO-70109 Bucharest, Romania. |
| RP | Bally, V, Univ Maine, Fac Sci, Dept Math, Lab Stat & Proc, Av Olivier Messiaen, F-72085 Le Mans 9, France. |
| TC | 1 |
| PD | FEB |
| PY | 2005 |
| VL | 22 |
| IS | 1 |
| BP | 17 |
| EP | 60 |
| UT | ISI:000226978600002 |
| ER |
| PT | J |
| AU | Bensebaa, N Alleg, S Bentayeb, FZ Bessais, L Greneche, JM |
| TI | Microstructural characterisation of Fe-Cr-P-C powder mixture prepared by ball milling |
| SO | JOURNAL OF ALLOYS AND COMPOUNDS |
| AB | In an attempt to prepare amorphous Fe77Cr4P8C11 alloy by mechanical alloying, powder mixtures of Fe, Cr, P and C (activated carbon) with a purity of 99.9% have been ball milled, under argon atmosphere for several periods up to 90 h, in a planetary ball mill (Fritsch P7). The structure and microstructure of the milled powders have been characterised, as a function of milling time, by X-ray diffraction and Mossbauer spectrometry. During the first stage of milling (up to 12 h), detailed analyses of the diffraction patterns and the Mossbauer spectra reveal a complete dissolution of the elemental powders and the formation of FexP (1 < x < 2), Fe3P phosphides and Fe3C carbide in addition to alpha-(Fe,Cr) phase. The amorphous like state is reached after 32 h of milling. Further milling leads to the appearance of new carbides such as (Fe,Cr)(7)C-3 and epsilon'-Fe2.2C with the phosphide (Fe,Cr)(3)P type phase embedded in the amorphous matrix. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, Lab Phys Etat Condense, UMR 6087, F-72085 Le Mans 9, France. CNRS, Lab Chim Met Terres Rares, Grp Labs Thiais, F-94320 Thiais, France. Univ Annaba, Fac Sci, Lab Megnetisme & Spectroscopie Solides, Annaba 23000, Algeria. |
| RP | Greneche, JM, Univ Maine, Lab Phys Etat Condense, UMR 6087, F-72085 Le Mans 9, France. |
| EM | greneche@univ-lemans.fr |
| TC | 1 |
| PD | FEB 8 |
| PY | 2005 |
| VL | 388 |
| IS | 1 |
| BP | 41 |
| EP | 48 |
| UT | ISI:000226559800010 |
| ER |
| PT | J |
| AU | Gizecki, P Youcef, RA Poulard, C Dhal, R Dujardin, G |
| TI | Diastereoselective preparation of novel tetrahydrooxazinones via heterocycloaddition of N-Boc, O-Me-acetals |
| SO | TETRAHEDRON LETTERS |
| AB | Under Lewis acid conditions, reaction of N-Boc, O-Me acetals with the (R)-(+)-O-vinyl-pantolactone does not lead to the expected dihydrooxazine, but to the corresponding tetrahydrooxazinone, as a result of the loss of the t-Bu group. A diastereoselective and asymmetrical way to these new heterocyclic compounds is described, together with the first evidence of their ability to undergo N-acylation. (C) 2004 Elsevier Ltd. All rights reserved. |
| C1 | Univ Maine, Univ Chim Organ Mol & Macromol, CNRS, UMR 6011, F-72085 Le Mans 9, France. |
| RP | Dujardin, G, Univ Maine, Univ Chim Organ Mol & Macromol, CNRS, UMR 6011, F-72085 Le Mans 9, France. |
| EM | dujardin@univ-lemans.fr |
| TC | 1 |
| PD | DEC 20 |
| PY | 2004 |
| VL | 45 |
| IS | 52 |
| BP | 9589 |
| EP | 9592 |
| UT | ISI:000225623200023 |
| ER |
| PT | J |
| AU | Maisonneuve, V Leduc, E Bohnke, O Leblanc, M |
| TI | Synthesis and structure of Na4/3Ce26/3(SiO4)(6)(F1/3O2/3)(2); Ionic conductivity in the apatite series Na(4/3)Ln(26/3)(SiO4)(6)(F1/3O2/3)(2) (Ln = La, Ce, Gd) and Na4/3Ce26/3(SiO4)(6)O-2 |
| SO | CHEMISTRY OF MATERIALS |
| C1 | Univ Maine, Fac Sci, UMR 6010 CNRS, Lab Oxydes & Fluorures, F-72085 Le Mans 9, France. |
| RP | Maisonneuve, V, Univ Maine, Fac Sci, UMR 6010 CNRS, Lab Oxydes & Fluorures, Ave Olivier Messiaen, F-72085 Le Mans 9, France. |
| EM | vincent.maisonneuve@univ-lemans.fr |
| TC | 1 |
| PD | DEC 14 |
| PY | 2004 |
| VL | 16 |
| IS | 25 |
| BP | 5220 |
| EP | 5222 |
| UT | ISI:000225706100003 |
| ER |
| PT | J |
| AU | Adil, K Goreskhnik, E Courant, S Dujardin, G Leblanc, M Maisonneuve, V |
| TI | Synthesis and structures of new hybrid fluorides templated by tetraprotonated pentaerythrityl tetramine |
| SO | SOLID STATE SCIENCES |
| AB | A new route to synthetize the pentaerythrityl tetramine (tetra), C(CH2NH2)(4), is established with a good overall yield (75-80%) and four hybrid fluorides, templated by tetra, are synthetized by hydrothermal technique and microwave heating: cis-[H(4)tetra].(AlF5)(2) (I), trans-[H(4)tetra].(AlF5)(2) (II), [H(4)tetra].(AlF6).(Cl) (III) and (H3O).[H(4)tetra](2).(Ga(OH)(2)F-4).(GaF6)(2).2H(2)O (IV). Structural determinations are performed from single crystal X-ray diffraction data. Structures of I and II are built up from infinite (infinity)(AlF5)(2-) chains of corner sharing AlF6 octahedra; the octahedra are cis-connected in I and trans-connected in II. III and IV are molecular phases and consist of isolated AlF6 (III) or Ga(OH)(2)F-4 and GaF6 (IV) octahedra. Isolated chloride ions are found in III. Charge balance is ensured by tetraprotonated amine [H(4)tetra](4+) and the cohesion between inorganic and organic parts is due to hydrogen bonds. (C) 2004 Elsevier SAS. All rights reserved. |
| C1 | Univ Maine, Fac Sci & Tech, CNRS,UMR 6010,Lab Oxydes & Fluorures, IRIM2F,FR 2575,Inst Rech Ingn Mol & Mat Fonct, F-72085 Le Mans 9, France. Univ Maine, Fac Sci & Tech, CNRS,UMR 6011,Lab Synth Organ,UCO2M, IRIM2F,FR 2575,Inst Rech Ingn Mol & Mat Fonct, F-72085 Le Mans, France. |
| RP | Maisonneuve, V, Univ Maine, Fac Sci & Tech, CNRS,UMR 6010,Lab Oxydes & Fluorures, IRIM2F,FR 2575,Inst Rech Ingn Mol & Mat Fonct, Ave Olivier Messiaen, F-72085 Le Mans 9, France. |
| EM | vincent.maisonneuve@univ-lemans.fr |
| TC | 1 |
| PD | NOV |
| PY | 2004 |
| VL | 6 |
| IS | 11 |
| BP | 1229 |
| EP | 1235 |
| UT | ISI:000225527700007 |
| ER |
| PT | J |
| AU | Lage, MM Krambrock, K Moreira, RL Gesland, JY |
| TI | Infrared-spectroscopic study of orthorhombic YF3 and LuF3 single crystals |
| SO | VIBRATIONAL SPECTROSCOPY |
| AB | Polarized infrared-reflectivity spectra have been obtained for Czochralski-grown YF3 and LuF3 single crystals, at room temperature. At this temperature these crystals exhibit an orthorhombic symmetry belonging to the Pnma (D-2h(16)) space group, known as beta-YF3. The measured spectra were analyzed based on the factor-group method and on the fitting with the four-parameter semi-quantum model. The observed modes obey well the selection rules and the 16 predicted infrared-active modes could be depicted and assigned to their corresponding symmetries for both crystals. From the frequency splitting of TO-LO modes, the ionic effective charges were calculated and the results used to discuss the potentiality of laser action of beta-YF3-type crystals. (c) 2005 Elsevier B.V. All rights reserved. |
| C1 | Univ Fed Minas Gerais, Dept Fis, ICEx, BR-30123970 Belo Horizonte, MG, Brazil. Univ Maine Cristallogenese, CNRS, UMR 6087, F-72085 Le Mans, France. |
| RP | Moreira, RL, Univ Fed Minas Gerais, Dept Fis, ICEx, CP 702, BR-30123970 Belo Horizonte, MG, Brazil. |
| EM | bmoreira@fisica.ufmg.br |
| TC | 0 |
| PD | OCT 31 |
| PY | 2005 |
| VL | 39 |
| IS | 2 |
| BP | 244 |
| EP | 248 |
| UT | ISI:000232499700017 |
| ER |
| PT | J |
| AU | Lepeltier, JP Xu, M |
| TI | Penalization method for reflected backward stochastic differential equations with one r.c.l.l. barrier |
| SO | STATISTICS & PROBABILITY LETTERS |
| AB | In this paper, we consider BSDEs with a Lipschitz coefficient reflected on one discontinuous (r.c.l.l.) barrier. We prove the convergence of the solutions of the penalized equations to the solution of the RBSDE. (c) 2005 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, Lab Stat & Proc, Dept Math, F-72085 Le Mans, France. |
| RP | Lepeltier, JP, Univ Maine, Lab Stat & Proc, Dept Math, BP 535, F-72085 Le Mans, France. |
| EM | lepeltier@univ-lemans.fr |
| TC | 0 |
| PD | NOV 1 |
| PY | 2005 |
| VL | 75 |
| IS | 1 |
| BP | 58 |
| EP | 66 |
| UT | ISI:000232567900007 |
| ER |
| PT | J |
| AU | Corbel, G Mestiri, S Lacorre, P |
| TI | Physicochemical compatibility of CGO fluorite, LSM and LSCF perovskite electrode materials with La2MO2O9 fast oxide-ion conductor |
| SO | SOLID STATE SCIENCES |
| AB | The reactivity of typical electrode materials for solid oxide fuel cells, namely La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF), La0.8Sr0.2MnO3-delta (LSM) and Ce0.9Gd0.1O1.95 (CGO), with fast oxide-ion conductor La2Mo2O9 is thoroughly studied using X-ray diffractometry. Modifications in the materials diffraction patterns and occurrence of impurity diffraction peaks are evidenced in LSCF and LSM above 700-800 degrees C. They are interpreted in terms of cationic migrations from one material phase to the other (typically strontium depletion/substitution), and subsequent formation of subsidiary phases (for instance strontium molybdate). With CGO no reactivity is observed up to 1000 degrees C. For all three electrode materials the thermal expansion coefficient (TEC) is measured from X-ray thermodiffractograms and compared to that of La2Mo2O9. (c) 2005 Elsevier SAS. All rights reserved. |
| C1 | Univ Maine, CNRS, Lab Oxydes & Fluorures,IRIM2F,FR CNRS 2575, UMR 6010,Inst Rech Ingn Mol & Mat Fonctionnels, F-72085 Le Mans, France. |
| RP | Corbel, G, Univ Maine, CNRS, Lab Oxydes & Fluorures,IRIM2F,FR CNRS 2575, UMR 6010,Inst Rech Ingn Mol & Mat Fonctionnels, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | gwenael.corbel@univ-lemans.fr |
| TC | 0 |
| PD | OCT |
| PY | 2005 |
| VL | 7 |
| IS | 10 |
| BP | 1216 |
| EP | 1224 |
| UT | ISI:000232563400011 |
| ER |
| PT | J |
| AU | Saada, MA Hemon-Ribaud, A Leblanc, M Maisonneuve, V |
| TI | Anion and cation disorder in [CN3H6]center dot(TaF6) |
| SO | SOLID STATE SCIENCES |
| AB | A new guanidinium fluoride tantalate, [CN3H6]-(TaF6), crystallises at 50 degrees C from a solution of Ta2O5 in 40% aqueous HF and of guanidinium chloride. The structure is rhombohedral, R (3) over barm space group, with the equivalent hexagonal cell a(H) = 8.647(1) angstrom, C-H = 8.507(2) angstrom, Z = 3 and R = 0.029, R-w = 0.077 for 312 reflections. The three-dimensional network is built up from parallel (0001)(H) layers infinity([CN3H6]F-6)(5-) between which tantalum atoms are inserted. These tantalum atoms, in 3a sites, adopt an octahedral coordination with (d(Ta-F)) = 1.894(7)angstrom (TaF6)(-) anions are disordered over (0001)(H) mirror plane related positions while guanidinium cations are disordered over centrosymmetric positions; site occupancy of fluoride and nitrogen sites is fifty per cent. (c) 2005 Elsevier SAS. All rights reserved. |
| C1 | Univ Maine, Fac Sci & Tech, CNRS, UMR 6010,Lab Oxydes & Fluorures, F-72085 Le Mans, France. Fac Sci Bizerte, Lab Chim Inorgan & Struct, Jarzouna 7021, Tunisia. |
| RP | Maisonneuve, V, Univ Maine, Fac Sci & Tech, CNRS, UMR 6010,Lab Oxydes & Fluorures, Ave O Messiaen, F-72085 Le Mans, France. |
| EM | vincent.maisonneuve@univ-lemans.fr |
| TC | 0 |
| PD | SEP |
| PY | 2005 |
| VL | 7 |
| IS | 9 |
| BP | 1070 |
| EP | 1073 |
| UT | ISI:000232563200008 |
| ER |
| PT | J |
| AU | Gouanve, F Marais, S Saiter, JM Poncin-Epaillard, F Metayer, M Garda, MR |
| TI | Characterization of composites with flax fibers treated with cold plasma-water permeation and thermal analysis |
| SO | MATERIALS RESEARCH INNOVATIONS |
| C1 | Univ Rouen, CNRS,UMR 6522, UFR Sci, Lab Polymeres Biopolymeres Membranes, F-76821 Mont St Aignan, France. Univ Rouen, UFR Sci, Lab Etud & Caracterisat Amorphes & Polymeres, F-76821 Mont St Aignan, France. Univ Maine Polymeres Colloides & Interfaces, CNRS, UMR 6120, F-72017 Le Mans, France. |
| RP | Gouanve, F, Univ Rouen, CNRS,UMR 6522, UFR Sci, Lab Polymeres Biopolymeres Membranes, F-76821 Mont St Aignan, France. |
| EM | stephane.marais@univ-rouen.fr |
| TC | 0 |
| PD | MAR |
| PY | 2005 |
| VL | 9 |
| IS | 1 |
| BP | 15 |
| EP | 17 |
| UT | ISI:000232455200010 |
| ER |
| PT | J |
| AU | Tabutin, J Banon, F Catonne, Y Grobost, J Tessier, JL Tillie, B |
| TI | Should we resurface the patella in total knee replacement? Experience with the Nex Gen prothesis |
| SO | KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY |
| AB | Patellar resurfacing is a controversial issue in primary total knee replacement. So, we took advantage of a large study to try and answer this question. An open prospective multicentric study was conducted about the outcome of the Nex Gen Total Knee prosthesis with clinical and radiological follow-up at regular intervals (1, 2 and 5 years). The data were centrally collected and analyzed by independent observers. A total of whole 5,915 cases were included (487 in the French group); incidences of patello-femoral pain were observed in both French and international groups and compared between cases with or without resurfaced patellae. Only osteoarthritic cases were selected for this particular study. Statistical analysis was performed using a Pearson's Chi-square test with a 95% confidence interval. The frequency of preoperative pain was significantly higher in the French group; 85.1% versus 66.6% (p < 0.05). No patello-femoral pain appeared in preoperatively painless patients in the French group. The frequency of lateral patellar release was similar in both groups. 35.7% of the patellae were resurfaced in the international group versus 98.8% in the French one. At 2 years, patello-femoral pain was observed in 6.3% of cases in the former group versus 0.7% in the latter one. The risk of having patello-femoral pain was 9.45 times higher in the international group. When considering resurfaced cases in both groups the risk of having anterior knee pain was not significantly different (p=0.35). In the French group, one case out of nine (11.1%) with patello-femoral pain had not been resurfaced, while 129 cases out of 151 (85.4%) had not had a resurfacing in the international group. This emphasizes the effect of patellar implant on pain. Although patello-femoral pain is multifactorial, this analysis tool is powerful in getting rid of the "center effect " (cf Swedish register). Even if a longer follow-up for confirmation is needed, our data favor patellar resurfacing with this type of implant in spite of the fact that the trochlear design was considered as anatomical. |
| C1 | Ctr Hosp Cannes, F-06401 Cannes, France. Nouvelle Clin Union, F-31240 St Jean, France. Hop La Pitie Salpetriere, Serv Orthopedie, F-75651 Paris, France. Clin St Croix, F-72016 Le Mans, France. Cabinet Orthopedie, F-13400 Aubagne, France. Clin Bon Secours, F-62000 Arras, France. |
| RP | Tabutin, J, Ctr Hosp Cannes, 13 Ave Broussailles, F-06401 Cannes, France. |
| EM | j.tabutin@ch-cannes.fr |
| TC | 0 |
| PD | OCT |
| PY | 2005 |
| VL | 13 |
| IS | 7 |
| BP | 534 |
| EP | 538 |
| UT | ISI:000232401700006 |
| ER |
| PT | J |
| AU | Georges, S Goutenoire, F Lacorre, P Steil, MC |
| TI | Sintering and electrical conductivity in fast oxide ion conductors La(2-x)R(x)Mo(2-y)WyO(9) (R : Nd, Gd, Y) |
| SO | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY |
| AB | Attrition and ball milling are used as mechanical means to reduce grain size of optimized fast oxide-ion conductors La2-xRxMo2-yWyO9 (R: rare earths). Dilatometry is used to determine the optimal sintering conditions in order to obtain high density samples (greater than 96% of relative density) with help of scanning electron microscopy to characterize their microstructure. The optimal sintering temperatures are highly dependent on the chemical composition, and therefore identical annealing temperatures do not warrant similar relative densities. Complex impedance spectroscopy show that above the transition temperature of La2Mo2O9 at 580 degrees C, the conductivity of all the studied compounds is lower than that of the parent compound, whereas just below the transition, in most cases the stabilization of the cubic phase increases conductivity. An interesting result is that tungsten substitution, which stabilizes La2Mo2O9 against reduction, does not affect significantly the oxide ion conduction. (c) 2004 Elsevier Ltd. All rights reserved. |
| C1 | Univ Maine, Lab Oxydes & Fluorures, CNRS, UMR 6010, F-72085 Le Mans, France. Univ Sci & Technol Lille, ENSCL, Lab Cristallochim & Physicochim Solide, CNRS,UMR 8012, F-59652 Villeneuve, France. |
| RP | Lacorre, P, Univ Maine, Lab Oxydes & Fluorures, CNRS, UMR 6010, Ave Olivier Messiaeu, F-72085 Le Mans, France. |
| EM | philippe.lacorre@univ-lemans.fr |
| TC | 0 |
| PD | NOV |
| PY | 2005 |
| VL | 25 |
| IS | 16 |
| BP | 3619 |
| EP | 3627 |
| UT | ISI:000232525200013 |
| ER |
| PT | J |
| AU | Diop, M Rahmani, A Belli, A Gautheron, V Geyssant, A Cottalorda, J |
| TI | Influence of speed variation and age on ground reaction forces and stride parameters of children's normal gait |
| SO | INTERNATIONAL JOURNAL OF SPORTS MEDICINE |
| AB | The aim of this study was to assess the influence of both age and speed on ground reaction forces and temporal parameters during normal gait in children. Fifteen children aged 4 - 6 years (group 1), 16 aged 6 - 8 years (group 2), and 16 aged 8 - 10 years (group 3) walked at 2.7 km/h, 3.6 km/h, and 4.5 km/h on a treadmill. For each child thirty successive steps were recorded. The influence of speed and age on normalized gait parameters was examined with two-way analysis of variance. The first vertical peak force (Fz1) and all the antero-posterior forces of group 1 were higher than those of the other groups for the three speeds. The minimum vertical force (Fz2), the second vertical peak force (Fz3), and the duration of stride and stance were significantly higher in groups 2 and 3. For all the groups, Fz1 and all the antero-posterior forces increased with the speed while Fz2, stride, stance, and double-stance duration decreased. Fz3 was not influenced by speed variation. The results of this study show that age and walking speed influence ground reaction forces and stride time parameters in 4- to 10-year-old children. |
| C1 | Univ St Etienne, Sch Med, GIP Exercise Sport Sante, Dept Physiol, St Etienne, France. Univ St Etienne, Sch Med, Orthoped Pediat Surg Dept, St Etienne, France. Univ Sport Med, Dept Phys Med & Rehabil, GIP Exercise Sport Sante, St Etienne, France. Univ Maine, Dept STAPS, F-72017 Le Mans, France. |
| RP | Cottalorda, J, Hop Nord St Etienne, Serv Chirurg Infantile, F-42055 St Etienne, France. |
| EM | j.cotta@mageos.com |
| TC | 0 |
| PD | OCT |
| PY | 2005 |
| VL | 26 |
| IS | 8 |
| BP | 682 |
| EP | 687 |
| UT | ISI:000232426000012 |
| ER |
| PT | J |
| AU | Rottereau, M Gimel, JC Nicolai, T Durand, D |
| TI | Influence of the Brownian step size in off-lattice Monte Carlo simulations of irreversible particle aggregation |
| SO | EUROPEAN PHYSICAL JOURNAL E |
| AB | The influence of the Brownian step size in off-lattice Monte Carlo simulations of the aggregation and gelation of spheres is studied. It is found that the kinetics are strongly influenced if the step size is larger than the mean smallest distance between the sphere surfaces. The structure of the clusters and the gels is influenced, but only over length scales smaller than the step size. Using large step sizes leads to a narrower size distribution of the clusters. Implications of the present results are discussed for simulations reported in the literature in which the Brownian step size was chosen equal to the sphere diameter. |
| C1 | Univ Maine, CNRS, UMR 6120, F-72085 Le Mans, France. |
| RP | Rottereau, M, Univ Maine, CNRS, UMR 6120, F-72085 Le Mans, France. |
| EM | jean-christophe.gimel@univ-lemans.fr |
| TC | 0 |
| PD | SEP |
| PY | 2005 |
| VL | 18 |
| IS | 1 |
| BP | 15 |
| EP | 19 |
| UT | ISI:000232531600002 |
| ER |
| PT | J |
| AU | Rottereau, M Nicolai, T Gimel, JC |
| TI | Depletion from a hard wall induced by aggregation and gelation |
| SO | EUROPEAN PHYSICAL JOURNAL E |
| AB | Diffusion-limited cluster aggregation and gelation of hard spheres is simulated using off-lattice Monte Carlo simulations. A comparison is made of the wall-particle correlation function with the particle-particle correlation function over a range of volume fractions, both for the initial system of randomly distributed spheres and for the final gel state. For randomly distributed spheres the correlation functions are compared with theoretical results using the Ornstein-Zernike equation and the Percus-Yevick closure. At high volume fractions (phi > 40%) gelation has little influence on the correlation function, but for phi < 10% it is a universal function of the distance normalized by correlation length (xi) of the bulk. The width of the depletion layer is about 0.5 xi. The concentration increases as a power law from the wall up to r approximate to xi, where it reaches a weak maximum before decreasing to the bulk value. |
| C1 | Univ Maine, CNRS, UMR 6120, F-72085 Le Mans, France. |
| RP | Gimel, JC, Univ Maine, CNRS, UMR 6120, F-72085 Le Mans, France. |
| EM | taco.nicolai@univ-lemans.fr jean-christophe.gimel@univ-lemans.fr |
| TC | 0 |
| PD | SEP |
| PY | 2005 |
| VL | 18 |
| IS | 1 |
| BP | 37 |
| EP | 40 |
| UT | ISI:000232531600005 |
| ER |
| PT | J |
| AU | Deschamps, B |
| TI | The continued automorphisms of a body of Puiseux series |
| SO | ACTA ARITHMETICA |
| C1 | Univ Maine, Dept Math, F-72085 Le Mans, France. |
| RP | Deschamps, B, Univ Maine, Dept Math, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | Bruno.Deschamps@univ-lemans.fr |
| TC | 0 |
| PY | 2005 |
| VL | 118 |
| IS | 3 |
| BP | 205 |
| EP | 229 |
| UT | ISI:000232344400001 |
| ER |
| PT | J |
| AU | Monnereau, C Blart, E Montembault, W Fontaine, L Odobel, F |
| TI | Synthesis of new crosslinkable co-polymers containing a push-pull zinc porphyrin for non-linear optical applications |
| SO | TETRAHEDRON |
| AB | In this paper, the synthesis of a crosslinkable co-polymer containing new push-pull arylethynyl zinc porphyrins is described. The synthesis of porphyrin chromophores, analogous to Therien's porphyrin functionalized with a methacrylic polymerizable group and a carboxylic acid crosslinking group was achieved with a new synthetic procedure leading to a higher overall yield compared to what was previously reported in the literature for similar and simpler structures. Radical copolymerization of the porphyrin chromophore with glycidyl methacrylate has then been carried out with success. This work opens a perspective on the possibility to integrate porphyrinic chromophore with high first-order molecular quadratic hyperpolarizability coefficient in opto-electronic devices. (c) 2005 Elsevier Ltd. All rights reserved. |
| C1 | Fac Sci & Tech, CNRS, UMR 6513, Synth Organ Lab, F-44322 Nantes, France. Fac Sci & Tech, CNRS, FR 2465, F-44322 Nantes, France. CNRS, UMR 6011, UCO2M, Unite Chim Organ Mol & Macromol, F-72085 Le Mans, France. |
| RP | Odobel, F, Fac Sci & Tech, CNRS, UMR 6513, Synth Organ Lab, BP 92208,2 Rue Houssiniere, F-44322 Nantes, France. |
| EM | fabrice.odobel@chimic.univ-nantes.fr |
| TC | 0 |
| PD | OCT 17 |
| PY | 2005 |
| VL | 61 |
| IS | 42 |
| BP | 10113 |
| EP | 10121 |
| UT | ISI:000232243500020 |
| ER |
| PT | J |
| AU | Arbi, K Tabellout, M Lazarraga, MG Rojo, JM Sanz, J |
| TI | Non-Arrhenius conductivity in the fast lithium conductor Li1.2Ti1.8Al0.2(PO4)(3): A Li-7 NMR and electric impedance study |
| SO | PHYSICAL REVIEW B |
| AB | Lithium ion motion has been investigated in the Li1.2Ti1.8Al0.2(PO4)(3) compound with NMR and impedance spectroscopies. From the analysis of the bulk dc conductivity (sigma(b,dc)) and the frequency at the maximum (omega(bp)) of the imaginary electric modulus, two regimes for lithium motion have been identified. From the analysis of the temperature dependence of Li-7 NMR quadrupole constant (C-Q) and spin-spin relaxation rate (T-2(-1)), the evolution of M-1 and M-2 sites occupancy in the conduction network of the fast ion conductor has been deduced. At low temperatures (T < 250 K), differences in activation energies deduced from NMR (E-m(R)=0.19 eV) and conductivity (E-M(C)=0.31 eV) are discussed in terms of a correlated lithium motion. In this regime, the beta parameter that relates both energies (E-m=beta E-M) takes the value 0.61. In the high temperature regime (T > 250 K), the activation energy E-M deduced by the two techniques show similar values (0.22 eV). In this case the beta parameter is nearly equal to 0.85. From the NMR results, it has been concluded that the partial cancellation of the correlation in lithium motion is associated with the creation of vacancies at M-1 sites. On the other hand, some differences in beta and tau(0) parameters have been detected, indicating that relaxation functions are slightly different in two techniques. In particular, the NMR beta(R) correlation factor is slightly higher and the NMR tau(0)(R) parameter is almost one order of magnitude higher than that deduced from electric measurements. |
| C1 | CSIC, ICMM, E-28049 Madrid, Spain. Univ Maine, Lab Phys Etat Condense, UMR 6087, CNRS, F-72085 Le Mans, France. |
| RP | Sanz, J, CSIC, ICMM, Plaza Murillo 2, E-28049 Madrid, Spain. |
| EM | jsanz@icmm.csic.es |
| TC | 0 |
| PD | SEP |
| PY | 2005 |
| VL | 72 |
| IS | 9 |
| AR | 094302 |
| UT | ISI:000232228500053 |
| ER |
| PT | J |
| AU | Giraudet, M Truss, JK |
| TI | Okhuma graphs and coloured chains |
| SO | ORDER-A JOURNAL ON THE THEORY OF ORDERED SETS AND ITS APPLICATIONS |
| AB | A structure is said to be 'Okhuma' if its automorphism group acts on it uniquely transitively, or slightly generalizing this, if its automorphism group acts uniquely transitively on each orbit. In this latter case we can think of the orbits as 'colours'. Okhuma chains and related structures have been studied by Okhuma and others. Here we generalize their results to coloured chains, and give some constructions resulting from this of Okhuma graphs and digraphs. |
| C1 | Univ Maine, F-72017 Le Mans, France. Univ Leeds, Leeds, W Yorkshire, England. |
| RP | Giraudet, M, Univ Maine, F-72017 Le Mans, France. |
| TC | 0 |
| PD | NOV |
| PY | 2004 |
| VL | 21 |
| IS | 4 |
| BP | 265 |
| EP | 281 |
| UT | ISI:000232372900001 |
| ER |
| PT | J |
| AU | Hennequin, C Ganem, G Kleisbauer, J Quoix, E Thareau, A Germa, C |
| TI | Radiotherapy (RT) patterns of care in stage III/IV non-small cell lung cancer (NSCLC): A prospective, multicenter, French observational study in a naturalistic setting |
| SO | LUNG CANCER |
| C1 | Hop St Louis, Paris, France. Ctr Jean Bernard, Le Mans, France. Hop St Marguerite, Marseille, France. Hop Lyautey, Strasbourg, France. Eli Lilly France, Suresnes, France. |
| TC | 0 |
| PD | JUL |
| PY | 2005 |
| VL | 49 |
| SU | Suppl. 2 |
| BP | S390 |
| EP | S390 |
| UT | ISI:000231307802501 |
| ER |
| PT | J |
| AU | Calvayrac, F |
| TI | Random number generators and the Metropolis algorithm: application to various problems in physics and mechanics as an introduction to computational physics |
| SO | EUROPEAN JOURNAL OF PHYSICS |
| AB | We present known and new applications of pseudo random numbers and of the Metropolis algorithm to phenomena of physical and mechanical interest, such as the search of simple clusters isomers with interactive visualization, or vehicle motion planning. The progression towards complicated problems was used with first-year graduate students who wrote most of the programs presented here. We argue that the use of pseudo random numbers in simulation and extrema research programs in teaching numerical methods in physics allows one to get quick programs and physically meaningful and demonstrative results without recurring to the advanced numerical analysis methods. |
| C1 | Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. Univ Maine, FR 2575, F-72085 Le Mans, France. |
| RP | Calvayrac, F, Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. |
| EM | Florent.Calvayrac@univ-lemans.fr |
| TC | 0 |
| PD | SEP |
| PY | 2005 |
| VL | 26 |
| IS | 5 |
| BP | S31 |
| EP | S38 |
| UT | ISI:000232321900005 |
| ER |
| PT | J |
| AU | Tabellout, M Fatyeyeva, K Baillif, PY Bardeau, JF Pud, AA |
| TI | The influence of the polymer matrix on the dielectric and electrical properties of conductive polymer composites based on polyaniline |
| SO | JOURNAL OF NON-CRYSTALLINE SOLIDS |
| AB | The dielectric properties of conducting polymer composite films based on polyaniline located in a thin layer in the vicinity of the surface of different insulating polymer matrices (polyamide and poly(ethylene terephthalate)) have been studied using dielectric relaxation spectroscopy in a wide temperature and frequency range. Several relaxation processes related to the film surface conductivity and influenced by the nature of the polymer matrix have been found in these composites. The nature of the polymer matrix is found to influence the rate of aniline polymerization, the distribution of polyaniline clusters and the depth of aniline penetration as shown, respectively, by Conducting Probe AFM and Raman spectroscopy. These features are correlated to the dielectric behavior of the composite films. (c) 2005 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. Natl Acad Sci Ukraine, Inst Bioorgan Chem & Petrochem, UA-02160 Kiev, Ukraine. |
| RP | Tabellout, M, Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | mohamed.tabellout@univ-lemans.fr |
| TC | 0 |
| PD | SEP 15 |
| PY | 2005 |
| VL | 351 |
| IS | 33-36 |
| BP | 2835 |
| EP | 2841 |
| UT | ISI:000231993300042 |
| ER |
| PT | J |
| AU | Nigmatullin, RR Le Mehaute, A |
| TI | Is there geometrical/physical meaning of the fractional integral with complex exponent? |
| SO | JOURNAL OF NON-CRYSTALLINE SOLIDS |
| AB | The geometrical/physical meaning of the temporal fractional integral with complex fractional exponent has been found and discussed. It has been shown that the imaginary part of the fractional integral is related to discrete scale invariance (DSI) phenomenon and observed only for trite regular (discrete) fractals. Numerical experiments show that the imaginary part of the complex fractional exponent can be well approximated by a simple and finite combination of the leading sine/cosine log-periodical functions with period In xi (xi is a scaling parameter). In most cases analyzed, the leading Fourier components give a pair of complex conjugated exponents defining the imaginary part of the complex fractional integral. For random fractals, where invariant scaling properties are realized only in the statistical sense the imaginary part of the complex exponent is averaged and the result is expressed in the form of the conventional Riemann-Liouville integral. The conditions for realization of reind and recaps elements with complex power-law exponents have been found. Description of relaxation processes by kinetic equations containing complex fractional exponent and their possible recognition in the dielectric spectroscopy is discussed. New kinetics expressed in terms of non-integer operators with complex and real power-law exponents can be successfully applied for description of dielectric spectra of many non-crystalline solids. (c) 2005 Elsevier B.V. All rights reserved. |
| C1 | Kazan VI Lenin State Univ, Dept Theoret Phys, Kazan 420008, Tatarstan, Russia. Inst Super Mat Mans, F-72000 Bartholdi, Lemans, France. |
| RP | Nigmatullin, RR, Kazan VI Lenin State Univ, Dept Theoret Phys, Kazan 420008, Tatarstan, Russia. |
| EM | nigmat@knet.ru |
| TC | 0 |
| PD | SEP 15 |
| PY | 2005 |
| VL | 351 |
| IS | 33-36 |
| BP | 2888 |
| EP | 2899 |
| UT | ISI:000231993300050 |
| ER |
| PT | S |
| AU | Wimmer, E |
| TI | The growing importance of computations in materials science: Current capabilities and perspectives |
| SO | FROM NANOPOWDERS TO FUNCTIONAL MATERIALS |
| SE | SOLID STATE PHENOMENA |
| C1 | Mat Design, F-72000 Le Mans, France. |
| RP | Wimmer, E, Mat Design, 44 Ave FA Bartholdi, F-72000 Le Mans, France. |
| TC | 0 |
| PY | 2005 |
| VL | 106 |
| BP | 168 |
| EP | 168 |
| UT | ISI:000231561400028 |
| ER |
| PT | J |
| AU | Leval, J Picart, P Boileau, JP Pascal, JC |
| TI | Full-field vibrometry with digital Fresnel holography |
| SO | APPLIED OPTICS |
| AB | A setup that permits full-field vibration amplitude and phase retrieval with digital Fresnel holography is presented. Full reconstruction of the vibration is achieved with a three-step stroboscopic holographic recording, and an extraction algorithm is proposed. The finite temporal width of the illuminating light is considered in an investigation of the distortion of the measured amplitude and phase. In particular, a theoretical analysis is proposed and compared with numerical simulations that show good agreement. Experimental results are presented for a loudspeaker under sinusoidal excitation; the mean quadratic velocity extracted from amplitude evaluation under two different measuring conditions is presented. Comparison with time averaging validates the full-field vibrometer. (c) 2005 Optical Society of America. |
| C1 | Univ Maine, CNRS, Acoust Lab, UMR 6613, F-72085 Le Mans, France. Ecole Natl Super Ingenieurs Mans, F-72085 Le Mans, France. |
| RP | Leval, J, Univ Maine, CNRS, Acoust Lab, UMR 6613, Avr Oliver Messiaen, F-72085 Le Mans, France. |
| EM | pascal.picart@univ-lemans.fr |
| TC | 0 |
| PD | SEP 20 |
| PY | 2005 |
| VL | 44 |
| IS | 27 |
| BP | 5763 |
| EP | 5772 |
| UT | ISI:000232119100019 |
| ER |
| PT | J |
| AU | Tournat, V Zaitsev, VY Nazarov, VE Gusev, VE Castagnede, B |
| TI | Experimental study of nonlinear acoustic effects in a granular medium |
| SO | ACOUSTICAL PHYSICS |
| AB | Results of a series of experimental studies of nonlinear acoustic effects in a granular medium are presented. Different effects observed in the experiments simultaneously testify that the nonlinearity of granular media is governed by the weakest intergrain contacts. The behavior of the observed dependences suggests that the distribution function of contact forces strongly increases in the range of forces much smaller than the mean force value, which is inaccessible for conventional experimental measuring techniques. For shear waves in a granular medium, the effects of demodulation and second harmonic generation with conversion to longitudinal waves are studied. These effects are caused by the nonlinear dilatancy of the medium, i.e., by the nonlinear law of its volume variation in the shear stress field. With the use of shear waves of different polarizations, the anisotropy of the nonlinearity of the medium is demonstrated. The observation of the cross-modulation effect shows that the nonlinearity-induced modulation components of the probe wave are much more sensitive to weak non-stationary perturbations of the medium, as compared to the linearly propagating fundamental harmonic. The nonlinear effects under study offer promise for diagnostic applications in laboratory measurements and in seismic monitoring systems. (c) 2005 Pleiades Publishing, Inc. |
| C1 | Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod 603950, Russia. Univ Maine, F-72085 Le Mans, France. |
| RP | Tournat, V, Russian Acad Sci, Inst Appl Phys, Ul Ulyanova 46, Nizhnii Novgorod 603950, Russia. |
| EM | vyuzai@hydro.appl.sci-nnov.ru |
| TC | 0 |
| PD | SEP-OCT |
| PY | 2005 |
| VL | 51 |
| IS | 5 |
| BP | 543 |
| EP | 553 |
| UT | ISI:000232217500007 |
| ER |
| PT | J |
| AU | Stosser, R Scholz, G Buzare, JY Silly, G Nofz, M Schultze, D |
| TI | A magnetic resonance investigation of the process of corundum formation starting from sol-gel precursors |
| SO | JOURNAL OF THE AMERICAN CERAMIC SOCIETY |
| AB | Al-27-MAS (magic angle spinning)-NMR and Fe3+ EPR measurements have been performed to follow the local process of corundum formation starting from xerogel on the Al3+ and Fe3+ sites yielding complementary information. Different heat treatments have been applied to the samples: an isochronous procedure and thermoanalytical measurements stopped by quenching. Despite the different mechanisms of the phase transitions deduced, both seeding and Fe3+ doping under the conditions of isochronous procedure favor the formation of alpha-Al2O3 at remarkably low temperatures. The. first observed temperature of corundum formation following the isochronous procedure with iron-doped samples is as low as 750 degrees C. The transition alumina, which could be clearly evidenced, is the gamma-Al2O3 phase (four-and six-fold Al coordination). In undoped or unseeded samples, intermediate Fe species could be detected by ESR and evidence for theta-Al2O3 was obtained from Al-27-NMR spectroscopy. |
| C1 | Humboldt Univ, Inst Chem, D-12489 Berlin, Germany. CNRS, UMR 6087, LPEC,IRIM2F, Lab Phys Etat Condense,Inst Rech Ingn Mol & Mat F, F-72085 Le Mans, France. Fed Inst Mat Res & Testing, D-12200 Berlin, Germany. |
| RP | Scholz, G, Humboldt Univ, Inst Chem, D-12489 Berlin, Germany. |
| EM | Gudrun.Scholz@rz.hu-berlin.de |
| TC | 0 |
| PD | OCT |
| PY | 2005 |
| VL | 88 |
| IS | 10 |
| BP | 2913 |
| EP | 2922 |
| UT | ISI:000231869100039 |
| ER |
| PT | J |
| AU | Hickey, CJ Leary, D Allard, JF Henry, M |
| TI | Impedance and Brewster angle measurement for thick porous layers |
| SO | JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA |
| AB | For thin nonlocally reacting porous layers, a method derived from the work of [Chien and Soroka, J. Sound Vib. 43, 9-20 (1975)] has been used to localize the pole of the reflection coefficient located at a complex angle close to pi/2 and to measure the surface impedance at this angle. Measurements are performed with a small source/receiver separation. The method is used in the present work to measure the surface impedance of acoustically thick porous layers of high flow resistivity. Simulations show that the measured impedance, which is related to a complex angle close to pi/2 like for thin porous layers, is close to the impedance at grazing incidence. It is also shown that for semi-infinite layers the method provides a measure of the Brewster angle of the medium. Measurements of the cosine of the complex angle and of the related impedance on two granular media of high flow resistivity, Ottawa sand and glass beads, are in a reasonable agreement with predictions for frequencies above 1 kHz for a source/receiver separation of 30 cm. (c) 2005 Acoustical Society of America. |
| C1 | Univ Mississippi, Natl Ctr Phys Acoust, University, MS 38677 USA. Univ Maine, Acoust Lab, UMR 6613, CNRS, F-72085 Le Mans, France. |
| RP | Hickey, CJ, Univ Mississippi, Natl Ctr Phys Acoust, Coliseum Dr, University, MS 38677 USA. |
| TC | 0 |
| PD | SEP |
| PY | 2005 |
| VL | 118 |
| IS | 3 |
| PN | Part 1 |
| BP | 1503 |
| EP | 1509 |
| UT | ISI:000231963600027 |
| ER |
| PT | J |
| AU | Tronc, E Chaneac, C Jolivet, JP Greneche, JM |
| TI | Spin collinearity and thermal disorder in epsilon-Fe2O3 |
| SO | JOURNAL OF APPLIED PHYSICS |
| AB | Studies of magnetoelectric epsilon-Fe2O3 nanoparticles (30 nm) in silica by Fe-57 Mossbauer spectrometry (4.2-600 K,0-6 T) are reported. They indicate a magnetic/structural transition at similar to 130 K, a high-temperature collinear ferrimagnetic spin structure similar to FeGaO3 and FeAlO3, and the Curie temperature T-C at 585 K. Reduced hyperfine field versus T/T-C is (S=5/2) Brillouin-like or Langevin-like according to the structural site. The magnetization at 300 K is estimated to 0.25 mu(B)/Fe in accord with published data. (c) 2005 American Institute of Physics. |
| C1 | Univ Paris 06, CNRS, UMR 7574, LCMC, F-75252 Paris, France. Univ Maine, CNRS, LPEC, UMR 6085, F-72085 Le Mans, France. |
| RP | Tronc, E, Univ Paris 06, CNRS, UMR 7574, LCMC, 4 Pl Jussieu, F-75252 Paris, France. |
| EM | elt@ccr.jussieu.fr |
| TC | 0 |
| PD | SEP 1 |
| PY | 2005 |
| VL | 98 |
| IS | 5 |
| AR | 053901 |
| UT | ISI:000231885600037 |
| ER |
| PT | J |
| AU | Nemeth, Z Klencsar, Z Kuzmann, E Homonnay, Z Vertes, A Greneche, JM Lackner, B Kellner, K Gritzner, G Hakl, J Vad, K Meszaros, S Kerekes, L |
| TI | The effect of iron doping in La0.8Sr0.2Fe0.05Co0.95O3-delta perovskite |
| SO | EUROPEAN PHYSICAL JOURNAL B |
| AB | (La0.8Sr0.2Fe0.05Co0.95O3-delta)-Fe-57 perovskite is investigated by (57) Fe transmission and emission Mossbauer spectroscopy, X-ray diffraction, AC magnetic susceptibility and magnetotransport measurements. Temperature dependence of the (57) Fe Mossbauer isomer shift, quadrupole splitting, magnetic hyperfine field, line broadening, and relative spectral area is presented in a detailed manner for (La0.8Sr0.2Fe0.05Co0.95O3-delta)-Fe-57. The oxidation state of iron is determined to be Fe3+, and the presence of preferential electronic charge compensation Fe3+ --> Fe4+ over that of Co3+ --> Co4+ is excluded. Relaxation of iron magnetic moments reflected by the Fe-57 Mossbauer spectra of La0.8Sr0.2 (Fe0.05Co0.95O3-delta)-Fe-57 are interpreted as evidence for the existence of superparamagnetic like Co clusters and a corresponding cluster glass magnetic phase formed below T approximate to 65 K. |
| C1 | Lorand Eotvos Univ, Dept Nucl Chem, H-1117 Budapest, Hungary. Hungarian Acad Sci, Res Grp Nucl Methods Struct Chem, H-1051 Budapest, Hungary. Univ Maine, Lab Phys Etat Condense, CNRS, UMR 6087, F-72085 Le Mans, France. Johannes Kepler Univ, Inst Chem Technol Inorgan Mat, A-4040 Linz, Austria. Hungarian Acad Sci, Inst Nucl Res, H-4001 Debrecen, Hungary. |
| RP | Nemeth, Z, Lorand Eotvos Univ, Dept Nucl Chem, Pazmany P S 1-A, H-1117 Budapest, Hungary. |
| EM | hentes@ludens.elte.hu |
| TC | 0 |
| PD | FEB |
| PY | 2005 |
| VL | 43 |
| IS | 3 |
| BP | 297 |
| EP | 303 |
| UT | ISI:000232025500001 |
| ER |
| PT | J |
| AU | Grafoute, M Labaye, Y Calvayrac, F Greneche, JM |
| TI | Structure of grain boundaries in nanostructured powders: a Monte-Carlo/EAM numerical investigation |
| SO | EUROPEAN PHYSICAL JOURNAL B |
| AB | A new approach based on the Embedded Atom Method is applied to model the structure of grain boundaries in nanostructured powders. We choose a set of EAM parameters reproducing bcc as well as fcc structures. A Monte-Carlo scheme, namely various modi. cations of the well established simulated annealing/ Metropolis algorithm, is used to obtain realistic structures of twisted and tilted double and triple grain boundaries as a function of the relative disorientation of the grains. We devise a completely general way to take into account the structure of the grains far from the interface as well as to constraint the relative orientation of the grains, without using periodic boundaries conditions, which would restrict the simulation to certain relative twist or tilt angles for the grains. A few parameters having to be assumed, we compare two methods to model the structure of the grain boundaries. As these two methods, depending on different parameters, lead to similar results, we therefore reduce the number of parameters to be assumed. Results indicate a new configuration which is closer to the bcc structure than the fcc one in the case of iron nanopowders. |
| C1 | Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. |
| RP | Grafoute, M, Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. |
| EM | greneche@univ-lemans.fr |
| TC | 0 |
| PD | JUN |
| PY | 2005 |
| VL | 45 |
| IS | 3 |
| BP | 419 |
| EP | 424 |
| UT | ISI:000232038900017 |
| ER |
| PT | J |
| AU | Acher-Chenebaux, A Maillard, H Potier, A Lejoyeux, P Celerier, P |
| TI | Treatment of Frey's syndrome with botulinum toxin |
| SO | ANNALES DE DERMATOLOGIE ET DE VENEREOLOGIE |
| C1 | Ctr Hosp, Serv Dermatol, F-72034 Le Mans, France. Ctr Hosp, Serv Neurol, F-72034 Le Mans, France. |
| RP | Maillard, H, Ctr Hosp, Serv Dermatol, F-72034 Le Mans, France. |
| EM | hmaillard@ch-lemans.fr |
| TC | 0 |
| PD | AUG-SEP |
| PY | 2005 |
| VL | 132 |
| IS | 8-9 |
| PN | Part 1 |
| BP | 703 |
| EP | 705 |
| UT | ISI:000232053600016 |
| ER |
| PT | J |
| AU | Minisini, B Wang, QA Tsobnang, F |
| TI | Ab initio investigation of the lattice dynamics of fluoride scheelite LiYF4 |
| SO | JOURNAL OF PHYSICS-CONDENSED MATTER |
| AB | We report on the phonon dynamics of LiYF4 obtained by a direct method using density functional theory. The longitudinal optical/transverse optical (LO/TO) splitting was not investigated. First, the equilibrium structure was evaluated via a full relaxation of the structure. Then phonon dispersion curves, velocities of sound, frequencies of Raman and infrared active modes, and density of states were calculated. Moreover, the elastic stiffness coefficients and specific heat capacity were evaluated from these data. The agreement between calculated and experimental frequencies are acceptable since, in general, the discrepancies are within 8%. |
| C1 | Inst Super Mat & Mecan, F-72000 Le Mans, France. |
| RP | Minisini, B, Inst Super Mat & Mecan, 44 Ave Bartholdi, F-72000 Le Mans, France. |
| EM | bminisini@ismans.univ-lemans.fr |
| TC | 0 |
| PD | AUG 24 |
| PY | 2005 |
| VL | 17 |
| IS | 33 |
| BP | 4953 |
| EP | 4962 |
| UT | ISI:000231867100003 |
| ER |
| PT | J |
| AU | Makowska-Janusik, M Kassiba, A Boucle, J Bardeau, JF Kodjikian, S Desert, A |
| TI | Vibrational density of states in silicon carbide nanoparticles: experiments and numerical simulations |
| SO | JOURNAL OF PHYSICS-CONDENSED MATTER |
| AB | The vibrational properties of silicon carbide nanoparticles (np-SiC) were investigated as function of the nanocrystal size (5-25 nm) and the features of their outermost surfaces. Raman experiments and numerical methods were conjugated to characterize the signatures from the active SiC normal modes and the vibrational density of states (VDOS). The Raman spectra of the nanopowders were marked by VDOS signals which correlate with the SiC amorphous fractions favoured by the high specific surfaces of the nanoparticles and their surface reconstruction. Quantitative interpretation of the experimental VDOS features, IR absorption and Raman scattering properties in nanosized SiC were carried out by means of numerical methods developed on SiC clusters with suitable structures and sizes. |
| C1 | Univ Maine, Lab Phys Etat Condense, UMR 6087, CNRS, F-72085 Le Mans, France. CNRS, CEA, URA 2453, Lab Francis Perrin,Serv Photon,DSM, F-91191 Gif Sur Yvette, France. Univ Maine, CNRS, UMR 6010, Lab Fluorures, F-72085 Le Mans, France. |
| RP | Kassiba, A, Univ Maine, Lab Phys Etat Condense, UMR 6087, CNRS, F-72085 Le Mans, France. |
| EM | kassiba@univ-lemans.fr |
| TC | 0 |
| PD | AUG 24 |
| PY | 2005 |
| VL | 17 |
| IS | 33 |
| BP | 5101 |
| EP | 5110 |
| UT | ISI:000231867100016 |
| ER |
| PT | J |
| AU | Farhi, B |
| TI | An elliptic analogue of Roth's theorem. |
| SO | COMPTES RENDUS MATHEMATIQUE |
| AB | An elliptic analogue of Roth's theorem. We present here quantitative versions, in dimension one, of Faltings' theorem according to which the set of K-rational points (where K is a given number field) of an Abelian variety A defined over K, which are close (with respect to a v-adic distance on K) to some K-subvariety X of A, but do not belong to X, is finite. More precisely, we treat the case where A is an elliptic curve and X is reduced to a point of A and we give (in this case) explicit bounds for the cardinal of the exceptional finite set. We consider also, more generally, not only one place v of K, but also a finite set S of places of K and the distance from the point of A to X, which takes into account all the places of S. To cite this article: B. Farhi, C R. Acad. Sci. Paris, Ser. I 341 (2005). (C) 2005 Academie des sciences. Publie par Elsevier SAS. Tons droits reserves. |
| C1 | Univ Maine, Dept Math, F-72085 Le Mans, France. |
| RP | Farhi, B, Univ Maine, Dept Math, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | Bakir.Farhi@univ-lemans.fr |
| TC | 0 |
| PD | SEP 1 |
| PY | 2005 |
| VL | 341 |
| IS | 5 |
| BP | 275 |
| EP | 278 |
| UT | ISI:000231972400001 |
| ER |
| PT | J |
| AU | Pradhan, TK De, A Mortier, J |
| TI | Application of directed metalation in synthesis. Part 8: Interesting example of chemoselectivity in the synthesis of thioaurones and hydroxy ketones and a novel anionic ortho-Fries rearrangement used as a tool in the synthesis of thienopyranones and thiafluorenones |
| SO | TETRAHEDRON |
| AB | Chemoselective synthesis of thioaurones or 3-hydroxy benzo[b]thiophen-2-aryl ketones, 1-hydroxy naphtho[2,1-b]thiophen-2aryl ketones and chalcones from N,N-diethyl-ortho-methyl sulfanyl aryl amides were described. (Benzo[b]thiophen-2-yl) alkylates and (naphtho[2, 1-b]thiophen-2-yl) alkylates undergo a novel anionic ortho-Fries rearrangement leading to (3-hydroxy benzo[b]thiophen-2-yl) and (1-hydroxy naphtho[2, 1 -b]thiophen-2-yl) alkyl ketones. The hydroxy ketones were used as intermediates in the synthesis of wide range of benzothienopyranones and thiafluorenones. (c) 2005 Elsevier Ltd. All rights reserved. |
| C1 | Indian Assoc Cultivat Sci, Dept Organ Chem, Calcutta 700072, India. Univ Maine, Fac Sci & Tech, Unite Chim Organ Mol & Macromol, F-72085 Le Mans, France. |
| RP | De, A, Indian Assoc Cultivat Sci, Dept Organ Chem, Calcutta 700072, India. |
| EM | ocad@mahendra.iacs.res.in |
| TC | 0 |
| PD | SEP 19 |
| PY | 2005 |
| VL | 61 |
| IS | 38 |
| BP | 9007 |
| EP | 9017 |
| UT | ISI:000231661700004 |
| ER |
| PT | J |
| AU | Kutoyants, YA |
| TI | On delay estimation for stochastic differential equations |
| SO | STOCHASTICS AND DYNAMICS |
| AB | We present a review of some results concerning delay estimation by continuous time observations of solutions of stochastic differential equations in two asymptotics. The first one corresponds to small noise limit and the second to large samples limit. In both cases we describe the properties of the maximum likelihood estimator and Bayesian estimators with especial attention to asymptotic efficiency of the estimators. We show that the first asymptotic corresponds to regular problems of mathematical statistics and the second is close to non regular problems. In small noise asymptotics we give the next after the Gaussian term of asymptotic expansion of the maximum likelihood estimator. |
| C1 | Univ Maine, Lab Stat & Proc, F-72085 Le Mans, France. |
| RP | Kutoyants, YA, Univ Maine, Lab Stat & Proc, F-72085 Le Mans, France. |
| EM | kutoyants@univ-lemans.fr |
| TC | 0 |
| PD | JUN |
| PY | 2005 |
| VL | 5 |
| IS | 2 |
| BP | 333 |
| EP | 342 |
| UT | ISI:000231609000017 |
| ER |
| PT | J |
| AU | Vignaud, G Bardeau, JF Gibaud, A Grohens, Y |
| TI | Multiple glass-transition temperatures in thin supported films of isotactic PADIA as revealed by enhanced Raman scattering |
| SO | LANGMUIR |
| AB | The glass-transition temperature, T-g, ofisotactic PMMA thin films has been measured for four thicknesses by enhanced Raman spectroscopy and ellipsometry. This was made possible by inserting a silica spacer layer between the film and the substrate. The use of such a spacer drastically improves the sensitivity of Raman scattering measurements. The improvement in the sensitivity allows us to study phenomena involving changes in molecular dynamics, such as the phase transition, and to probe the existence in very thin films of several thickness-dependent transition temperatures, T-g(h). This in turn is interpreted as the occurrence in the film of a layered structure. The influence of the polymer concentration on the conformation of the surface adsorbed polymer layer and therefore on T-g(h) is discussed. |
| C1 | Ctr Rech, Lab Polymeres Proprietes Interfaces & Composites, L2PIC, F-56321 Lorient, France. Univ Maine, CNRS, Lab Phys Etat Condense, UMR 6087, F-72085 Le Mans, France. |
| RP | Grohens, Y, Ctr Rech, Lab Polymeres Proprietes Interfaces & Composites, L2PIC, BP 92116,Rue St Maude, F-56321 Lorient, France. |
| EM | yves.grohens@univ-ubs.fr |
| TC | 0 |
| PD | SEP 13 |
| PY | 2005 |
| VL | 21 |
| IS | 19 |
| BP | 8601 |
| EP | 8604 |
| UT | ISI:000231789800010 |
| ER |
| PT | J |
| AU | Goutenoire, F Kodjikian, S Suard, E |
| TI | Extension of the La7MO7O30 structural type with La7Nb3W4O30 and La7Ta3W4O30 compounds |
| SO | JOURNAL OF SOLID STATE CHEMISTRY |
| AB | Two compounds of formula La(7)A(3)W(4)O(30) (with A = Nb and Ta) were prepared by solid-state reaction at 1450 and 1490 degrees C. They crystallize in the rhombohedric space group R-3 (No. 148), with the hexagonal parameters: a = 17.0640(2) angstrom, = 6.8859(1)angstrom and a = 17.0701(2)angstrom(,) c = 6.8851(1) =angstrom The structure of the materials was analyzed from X-ray, neutron and electronic diffraction. These oxides are isostructural of the reduced molybdenum compound La7MO7O30, which are formed of perovskite rod along [111]. An order between (Nb, Ta) and W is observed. (c) 2005 Elsevier Inc. All rights reserved. |
| C1 | Univ Maine, CNRS, UMR 6010, Lab Oxydes & Fluorures, F-72085 Le Mans, France. Inst Laue Langevin, F-38042 Grenoble, France. |
| RP | Goutenoire, F, Univ Maine, CNRS, UMR 6010, Lab Oxydes & Fluorures, F-72085 Le Mans, France. |
| EM | goutenoire.francois@univ-lemans.fr |
| TC | 0 |
| PD | SEP |
| PY | 2005 |
| VL | 178 |
| IS | 9 |
| BP | 2811 |
| EP | 2817 |
| UT | ISI:000231762700031 |
| ER |
| PT | J |
| AU | Corbel, G Laligant, Y Goutenoire, F Suard, E Lacorre, P |
| TI | Effects of partial substitution of Mo6+ by Cr6+ and W6+ on the crystal structure of the fast oxide-ion conductor structural effects of W6+ |
| SO | CHEMISTRY OF MATERIALS |
| AB | The crystal structure of the solid solutions La2MO2-yCryO9 (y <= 0.5) and La2Mo2-yWyO9 (y <= 1.4) has been studied using X-ray and neutron powder diffraction. These two series of lanthanum molybdates, which belong to the LAMOX family of fast oxide-ion conductors, exhibit a different structural behavior depending on the substituting element. The Cr series follows a regular Vegard-type evolution of crystallographic parameters. However, the behavior of the W series is different, the lattice constant varying in a nonlinear fashion with substitution level, resulting in a smaller cell volume for higher tungsten contents, despite the larger ionic radius of tungsten. Two main structural effects are evidenced: a variation in the distribution of ligands around tungsten, made apparent through the changing balance of oxygen O2 and O3 site occupancies along the series, and a nonlinear evolution of interatomic distances and angles involving the O1 oxygen site. An alternative structural description, based on [O1La(3)Mo] antitetrahedra, is proposed in order to better account for the transport properties of these materials. |
| C1 | Univ Maine, CNRS, UMR 6010, Lab Oxydes & Fluorures, F-72085 Le Mans, France. Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France. |
| RP | Lacorre, P, Univ Maine, CNRS, UMR 6010, Lab Oxydes & Fluorures, F-72085 Le Mans, France. |
| EM | philippe.lacorre@univ-lemans.fr |
| TC | 0 |
| PD | SEP 6 |
| PY | 2005 |
| VL | 17 |
| IS | 18 |
| BP | 4678 |
| EP | 4684 |
| UT | ISI:000231742600019 |
| ER |
| PT | J |
| AU | Wang, MJ Tabellout, M Chang, YI Poncin-Epaillard, F |
| TI | A novel technique to measure the surface electrical potential of polymer films by using dielectric spectroscopy |
| SO | SURFACE AND INTERFACE ANALYSIS |
| AB | A novel method that allows the determination of the electrical potential of a polymer surface has been applied for polypropylene film treated by N-2 + H-2 cold plasma. The plasma treatment results in formation on the film surface of NH2 groups, which then gets transformed to NH3+ in contact with an electrolyte and leads to the formation of an electrical double layer. The method consists of theoretical calculation of electrical model potential, using the measurement of the electrical capacitance of the film in contact with an electrolyte by dielectric spectroscopy. Comparison with the results obtained by theoretical model shows similar dependencies of the electrical potential as a function of amino-groups density and electrolyte concentration, but systematic differences of absolute values are observed. Copyright (c) 2005 John Wiley & Sons, Ltd. |
| C1 | Univ Maine, CNRS, UMR 6120, Lab Polymeres Colloides Interfaces, F-72085 Le Mans, France. Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. Tunghai Univ, Dept Chem Engn, Taichung 40704, Taiwan. |
| RP | Poncin-Epaillard, F, Univ Maine, CNRS, UMR 6120, Lab Polymeres Colloides Interfaces, Ave O Messiaen, F-72085 Le Mans, France. |
| EM | fabienne.poncin-epaillard@univ-lemans.fr |
| TC | 0 |
| PD | SEP |
| PY | 2005 |
| VL | 37 |
| IS | 9 |
| BP | 737 |
| EP | 742 |
| UT | ISI:000231578500004 |
| ER |
| PT | J |
| AU | Maaza, M Nemraoui, O Sella, C Lafait, J Gibaud, A Pischedda, V |
| TI | Thermal morphological evolution of platinum nano-particles in Pt-Al2O3 nano-composites |
| SO | PHYSICS LETTERS A |
| AB | Temperature morphological evolution of nonpercolated granular nano-structures of platinum nano-particles embedded in an insulating alumina matrix was investigated by X-rays scattering in grazing angle reflection mode. In the investigated temperature range of 298-823 K, it was found that the annealing treatment tends to increase the Pt nano-particles' size and to produce a quasi-mono-disperse Pt nano-particles followed by a reduction of the barrier thickness between them. The percolation temperature is estimated to be of the order of 890 K. Using the rate constant governing the growth of the Pt nano-particles, the corresponding activation energy was determined to be about 90 kJ/mol. (c) 2005 Elsevier B.V. All rights reserved. |
| C1 | iTHEMBA LABS, Solid State Mat Grp, Nanosci Labs, ZA-7129 Faure, South Africa. Rand Afrikaans Univ, Dept Phys, Johannesburg, South Africa. Univ Maine, Lab Surface & Interface, F-72017 Le Mans, France. Univ Witwatersrand, High Pressure High Temp Grp, ZA-2050 Wits, Johannesburg, South Africa. Univ Paris 06, La Opt Solides, Paris, France. |
| RP | Maaza, M, iTHEMBA LABS, Solid State Mat Grp, Nanosci Labs, POB 722, ZA-7129 Faure, South Africa. |
| EM | maaza@tlabs.ac.za |
| TC | 0 |
| PD | AUG 29 |
| PY | 2005 |
| VL | 344 |
| IS | 1 |
| BP | 57 |
| EP | 63 |
| UT | ISI:000231629200008 |
| ER |
| PT | J |
| AU | Gusev, V Tournat, V |
| TI | Amplitude- and frequency-dependent nonlinearities in the presence of thermally-induced transitions in the Preisach model of acoustic hysteresis |
| SO | PHYSICAL REVIEW B |
| AB | Contribution of hysteretic mechanical elements to the stress/strain relationship of microinhomogeneous material is analyzed within the framework of a model where the transitions between the different mechanical states of the individual elements in addition to acoustic loading can be induced by thermal fluctuations. The model provides explanation for the dependence of the type and order of the acoustic nonlinearity on the wave amplitude observed in experiments with microinhomogeneous materials, where, with increasing wave amplitude, transition from behavior characterized by the dominance of the quasinonhysteretic nonlinearity to another characterized by the dominance of hysteretic quadratic nonlinearity takes place. Analytical evaluation of the model for the acoustic hysteresis is shown to confirm the expectation that thermal relaxation effects are capable of inducing dispersion in both the linear and nonlinear acoustic properties of the material. |
| C1 | Univ Maine, F-712085 Le Mans, France. |
| RP | Gusev, V, Univ Maine, F-712085 Le Mans, France. |
| EM | vitali.goussev@univ-lemans.fr |
| TC | 0 |
| PD | AUG |
| PY | 2005 |
| VL | 72 |
| IS | 5 |
| AR | 054104 |
| UT | ISI:000231564300041 |
| ER |
| PT | J |
| AU | Hayward, SA Morrison, FD Redfern, SAT Salje, EKH Scott, JF Knight, KS Tarantino, S Glazer, AM Shuvaeva, V Daniel, P Zhang, M Carpenter, MA |
| TI | Transformation processes in LaAlO3: Neutron diffraction, dielectric, thermal, optical, and Raman studies |
| SO | PHYSICAL REVIEW B |
| AB | The behavior of the Pm (3) over barm-R (3) over barc phase transition in LaAlO3 (T-C=813 K from differential scanning calorimetry measurements) has been studied using temperature-dependent measurements of the crystal structure, dielectric relaxation, specific heat, birefringence, and the frequencies of the two soft modes (via Raman spectroscopy). While all these experiments show behavior near T-C consistent with a second-order Landau transition, there is extensive evidence for additional anomalous behavior below 730 K. Below this temperature, the two soft mode frequencies are not proportional to each other, the spontaneous strain is not proportional to the square of the AlO6 rotation angle, and anomalies are seen in the birefringence. Twin domains, which are mobile above 730 K, are frozen below 730 K. These anomalies are consistent with biquadratic coupling between the primary order parameter of the transition (AlO6 rotation) and a second process. From the dielectric results, which indicate a smooth but rapid increase in conductivity in the temperature range 500-800 K, we propose that this second process is hopping of intrinsic oxygen vacancies. These vacancies are essentially static below 730 K and dynamically disordered above 730 K. The interaction between static vacancies and the displacive phase transition is unfavorable. A similar anomaly may be observed in other aluminate perovskites undergoing the same transition. |
| C1 | Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England. Rutherford Appleton Lab, ISIS, Neutron Facil, Didcot OX11 0QX, Oxon, England. Univ Pavia, Dipartimento Sci Terra, I-27100 Pavia, Italy. Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England. Univ Maine, Lab Phys Etat Condense, F-72085 Le Mans, France. |
| RP | Hayward, SA, Univ Cambridge, Dept Earth Sci, Downing St, Cambridge CB2 3EQ, England. |
| TC | 0 |
| PD | AUG |
| PY | 2005 |
| VL | 72 |
| IS | 5 |
| AR | 054110 |
| UT | ISI:000231564300047 |
| ER |
| PT | J |
| AU | Chen, XQ Wolf, W Podloucky, R Rogl, P Marsman, M |
| TI | Ab initio study of ground-state properties of the Laves-phase compound ZrMn2 |
| SO | PHYSICAL REVIEW B |
| AB | By an ab initio density functional approach the structural and phase stability, electronic and magnetic properties, elastic constants, phonon dispersion, and defect formation of the Laves-phase compound ZrMn2 for the C15, C14, and C36 crystal structures were investigated. In order to study the stability of magnetic phases, nonmagnetic and spin polarized calculations for ferro- and antiferromagnetic orderings were performed. At low temperatures, the ferromagnetic cubic C15 phase was obtained as the ground state, with the ferromagnetic hexagonal C14 and C36 phases being almost degenerate in energy. From the calculated temperature-dependent free energies a structural transformation from C15 to C14 at about T-tr=200 K is predicted, confirming the experimentally observed C14 structure at elevated temperatures. Elastic properties were investigated for the nonmagnetic and ferromagnetic C14 and C15 phases. Structural stability studies based on the calculated temperature-dependent free vibrational energies very strongly favor the existence of ferromagnetic phases. Point defect formation properties for vacancies and antiste defects were calculated by combining a supercell approach with a statistical mechanics model. Mn antisites are the most favorable defects broadening the homogeneity range of the ZrMn2 phase toward the Mn-rich side. The existence of ordered Mn-rich compounds is predicted. Large magnetic moment of 3 mu(B) for Mn antisite defects are derived. |
| C1 | Univ Vienna, Inst Phys Chem, A-1090 Vienna, Austria. Mat Design Sarl, F-72000 Le Mans, France. Univ Vienna, Inst Mat Phys, A-1090 Vienna, Austria. |
| RP | Chen, XQ, Univ Vienna, Inst Phys Chem, Liechtensteinstr 22A, A-1090 Vienna, Austria. |
| TC | 0 |
| PD | AUG |
| PY | 2005 |
| VL | 72 |
| IS | 5 |
| AR | 054440 |
| UT | ISI:000231564300116 |
| ER |
| PT | J |
| AU | Feuilloley, P Cesar, G Benguigui, L Grohens, Y Pillin, I Bewa, H Lefaux, S Jamal, M |
| TI | Degradation of polyethylene designed for agricultural purposes |
| SO | JOURNAL OF POLYMERS AND THE ENVIRONMENT |
| AB | For many years now, scientific articles have been published on the potential biodegradability of polyethylene. Polyethylene (PE) with peroxidant additives, in the form of agricultural films, is sold by various suppliers as biodegradable mulch. Even though, the photo-chemical and thermal degradation of these products under artificial laboratory conditions is highlighted, several extrapolation on the biodegradation and, moreover, on the neutral environmental impact of PE are made. In this study, three different commercial mulch films have been submitted to standardised biodegradation tests and the results are discussed. The first conclusions are that a very low degree of biodegradation of the commercial PE films is achieved from these tests and that crosslinked PE micro-fragments are found in soil after a very long period of time. |
| C1 | Univ Bretagne Sud, Lab Polymeres Proprietes Interfaces & Composites, F-56321 Lorient, France. CEMAGREF, F-34033 Montpellier, France. Stn Expt Horticole Bretagne Sud, F-56400 Auray, France. Univ Maine, CNRS, UMR 6011, F-72085 Le Mans, France. ADEME, F-49004 Angers, France. |
| RP | Grohens, Y, Univ Bretagne Sud, Lab Polymeres Proprietes Interfaces & Composites, Rua St Maude, F-56321 Lorient, France. |
| EM | yves.grohens@univ-ubs.fr |
| TC | 0 |
| PD | OCT |
| PY | 2005 |
| VL | 13 |
| IS | 4 |
| BP | 349 |
| EP | 355 |
| UT | ISI:000231457200006 |
| ER |
| PT | J |
| AU | Beche, B Beche, E Camberlein, L Polet, F Gaviot, E |
| TI | A matrix formulation to introduce the concept of effective thermoelectric tensors in idealized superlattices |
| SO | SENSORS AND ACTUATORS A-PHYSICAL |
| AB | An overall matrix formalism is shaped to define the concept of effective thermoelectric tensors in idealized free-standing superlattices (SL). Starting from the relations accounting for the thermoelectric effects in anisotropic materials, we include the relevant continuity conditions to formulate a global matrix framework describing the thermoelectric effects in an idealized SL. Effective electrical conductivity and thermal power of such SL are formulated as only two general matrix relationships. These versatile results can be applied to idealized free standing SL with layers of all the classes of any symmetry (triclinic, monoclinic, orthorhombic, hexagonal, tetragonal and cubic) in the low-frequency model. (C) 2005 Elsevier B.V. All rights reserved. |
| C1 | IMN, LPCM, CNRS, UMR 6502, F-44322 Nantes, France. PROMES, CNRS, UPR 8521, F-66125 Odeillo Font Romeu, Font Romeu, France. Univ Maine, Acoust Lab, Micro Cap Ouest, CNRS,UMR 6613, F-72000 Le Mans, France. |
| RP | Beche, B, IMN, LPCM, CNRS, UMR 6502, F-44322 Nantes, France. |
| EM | bruno.beche@cnrs-imn.fr |
| TC | 0 |
| PD | AUG 26 |
| PY | 2005 |
| VL | 122 |
| IS | 2 |
| BP | 209 |
| EP | 214 |
| UT | ISI:000231347200006 |
| ER |
| PT | J |
| AU | Kebir, N Morandi, G Campistron, L Laguerre, A Pilard, JF |
| TI | Synthesis of well defined amino telechelic cis-1,4-oligoisoprenes from carbonyl telechelic oligomers; first studies of their potentialities as polyurethane or polyurea materials precursors |
| SO | POLYMER |
| AB | Carbonyl telechelic cis-1,4-oligoisoprene (CTPI) obtained from high molecular weight polyisoprene through an oxidative chain cleavage reaction have been chemically modified. Thus, new well defined amino telechelic cis-1,4-oligoisoprenes have been obtained in a mass range of 1600-2300 g/mol according to two different pathways. The first approach involved a standard mesylate displacement by sodium azide followed by smooth reduction using triphenylphosphine. The second pathway implied a reductive amination sequence. Primary or secondary amine functions have thus been selectively obtained at both oligomer chain-ends depending on reaction conditions. Peculiar NMR experiments conducted on these functional oligomers confirmed a precise control of functionality during the chemical modification. Moreover, their abilities to react with toluene diisocyanate or bis(succinimidyl)carbonate have been investigated. (c) 2005 Elsevier Ltd. All rights reserved. |
| C1 | Univ Maine, CNRS, UMR 6011, LCOM Chim Polymeres, F-72085 Le Mans, France. |
| RP | Pilard, JF, Univ Maine, CNRS, UMR 6011, LCOM Chim Polymeres, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | jean-francois.pilard@univ-lemans.fr |
| TC | 0 |
| PD | AUG 23 |
| PY | 2005 |
| VL | 46 |
| IS | 18 |
| BP | 6844 |
| EP | 6854 |
| UT | ISI:000231397200013 |
| ER |
| PT | J |
| AU | Kebir, N Campistron, L Laguerre, A Pilard, JF Bunel, C Couvercelle, JP Gondard, C |
| TI | Use of hydroxytelechelic cis-1,4-polyisoprene (HTPI) in the synthesis of polyurethanes (PUs). Part 1. Influence of molecular weight and chemical modification of HTPI on the mechanical and thermal properties of PUs |
| SO | POLYMER |
| AB | New telechelic cis-1,4-polyisoprene oligomers bearing an hydroxyl group at the end of the polyisoprene backbone and possessing controlled molecular weights were used as soft segments in the elaboration of polyurethane elastomers. Besides, the well defined hydroxytelechelic cis-1.4-polyisoprene (HTPI) structure obtained through a controlled methodology, was chemically modified leading to hydrogenated and epoxidized oligomers based polyurethanes. The influence of the structural changes of these precursors on the polyurethanes properties have been studied. Thus, mechanical parameters as well as glass transition and mechanical transition temperature measurements indicated an increase in PUs hardness when the length of soft segment decreases and when the degree of epoxidized and hydrogenated isoprenic moieties increases. Moreover, based on thermogravimetric analysis (TGA), a linear relationship was established between the weight loss in the urethane stage degradation and the amount of hard segments in the PUs. Otherwise, the hydrogenated soft segments were found more thermally stable than the epoxidized and the non modified ones. By comparison with similar investigations developed from commercial oligodienes (PBHT R20 LM (R) and EPOL (R)), this study mainly showed that the PUs based on hydrogenated hydroxytelechelic cis-1,4-polyisoprenes were more thermally stable and softer than the EPOL (R) based analogues. (c) 2005 Elsevier Ltd. All rights reserved. |
| C1 | Univ Maine, LCOM Chim Polymeres, UCO2M, CNRS,UMR 6011, F-72085 Le Mans, France. Inst Natl Sci Appl Rouen, CNRS, UMR 6522, Lab Mat Macromol, F-76131 Mont St Aignan, France. Pole Univ Mont Foulon, ISPA Alencon, F-61250 Alencon, Damigny, France. |
| RP | Pilard, JF, Univ Maine, LCOM Chim Polymeres, UCO2M, CNRS,UMR 6011, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | jean-francois.pilard@univ-lemans.fr claude.bunel@insa-rouen.fr |
| TC | 0 |
| PD | AUG 23 |
| PY | 2005 |
| VL | 46 |
| IS | 18 |
| BP | 6869 |
| EP | 6877 |
| UT | ISI:000231397200016 |
| ER |
| PT | J |
| AU | Saada, MA Hemon-Ribaud, A Smiri, LS Leblanc, M Maisonneuve, V |
| TI | Two tantalum fluorides templated with tren: [H(4)tren](TaF7)(2)center dot H2O and [H(4)tren](TaF7)(2) |
| SO | JOURNAL OF FLUORINE CHEMISTRY |
| AB | Using tris(2-aminoethyl)amine [(C2H4NH2)(3)N] (tren) as a template, two new tantalum fluorides are obtained by slow evaporation of solutions: [H(4)tren](TaF7)(2)(H2O)-H-. (1) and [H(4)tren](TaF7)(2) (II). The structure determinations are performed by single crystal X-ray technique. Structures of I and 11 are built up from isolated TaF7 distorted monocapped trigonal prisms or pentagonal bipyramids; charge balance is achieved by tetraprotonated [H(4)tren]4(+) cations which possess a "scorpion" configuration. In I and II, TaF7 polyhedra, connected by hydrogen bonds with water molecules in 1, lie in corrugated layers; hydrogen bond networks ensure the cohesion between these layers and [H(4)tren](4+)cations. (c) 2005 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, Fac Sci & Tech, Lab Oxydes & Fluorures, CNRS UMR 6010, F-72085 Le Mans, France. Fac Sci Bizerte, Lab Chim Inorgan & Struct, Zarzouna 7021, Tunisia. |
| RP | Maisonneuve, V, Univ Maine, Fac Sci & Tech, Lab Oxydes & Fluorures, CNRS UMR 6010, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | vincent.maisonneuve@univ-lemans.fr |
| TC | 0 |
| PD | AUG |
| PY | 2005 |
| VL | 126 |
| IS | 8 |
| BP | 1246 |
| EP | 1251 |
| UT | ISI:000231275300017 |
| ER |
| PT | J |
| AU | Doffoel, M Vetter, D Bouche, O Bonnetain, F Abergel, A Fratte, S Grange, JP Stremdoerfer, N Blanchi, A Bedenne, L |
| TI | Multicenter randomized phase III trial comparing tamoxifen alone or with transarterial lipiodol chemoembolization (TLC) for unresectable hepatocellular carcinoma (HCC) in cirrhotic patients |
| SO | JOURNAL OF CLINICAL ONCOLOGY |
| C1 | Hop Univ Strasb, FFCD, Hop Civil, Strasbourg, France. CHU R Debre, Reims, France. INSERM, EMI 106, Dijon, France. Serv Hepatogastroenterol, Clermont Ferrand, France. APHP, Paris, France. Ctr Hosp, Belfort, France. Ctr Hosp, Bourgoin Jallieu, France. Ctr Hosp, Le Mans, France. CHU Bocage, Dijon, France. |
| TC | 0 |
| PD | JUN 1 |
| PY | 2005 |
| VL | 23 |
| IS | 16 |
| PN | Part 1 Suppl. S |
| BP | 309S |
| EP | 309S |
| UT | ISI:000230326602056 |
| ER |
| PT | J |
| AU | Cartron, G Orhesser, M Solal-Celigny, P Salles, G Colombat, P Varoqueaux, N Watier, H |
| TI | Long term efficacy of rituximab in follicular lymphoma (FL) and polymorphism in IgG Fc receptor Fc gamma RIIIa/Fc gamma RIIa genes. |
| SO | JOURNAL OF CLINICAL ONCOLOGY |
| C1 | IPGA, EA 3853, Tours, France. Univ Tours, Tours, France. Clin Victor Hugo, Le Mans, France. Ctr Hosp Lyon Sud, Lyon, France. CHU Bretonneau, F-37044 Tours, France. Roche, Neuilly Sur Seine, France. |
| TC | 0 |
| PD | JUN 1 |
| PY | 2005 |
| VL | 23 |
| IS | 16 |
| PN | Part 1 Suppl. S |
| BP | 584S |
| EP | 584S |
| UT | ISI:000230326603555 |
| ER |
| PT | J |
| AU | Lage, MM Moreira, RL Matinaga, FM Gesland, JY |
| TI | Raman and infrared reflectivity determination of phonon modes and crystal structure of Czochralski-grown NaLnF(4) (Ln = La, Ce, Pr, Sm, Eu, and Gd) single crystals |
| SO | CHEMISTRY OF MATERIALS |
| AB | Optical quality NaLnF(4) single crystals have been obtained from nonstoichiometric melts through the Czochralski technique, for Ln = La, Ce, Pr, Sm, Eu, and Gd. These crystals are potential laser host materials because of their high luminescence efficiency when doped with rare earth ions. In view of this application, the knowledge of the optical phonon modes of the crystals is mandatory. In this work, we present our polarized Raman scattering and infrared reflectivity studies of NaLnF4 single crystals for large ionic radius lanthanides. For the different Ln ions, the spectra in each polarized configuration appeared to be very similar; the effect of Ln ion substitution on the crystal's vibrational modes was generally the hardening of the modes with decreasing ionic radii, with no important symmetry evolution. For all investigated crystals, the symmetries and number of observed phonon modes agree well with group theory predictions for the hexagonal A group. The rather broad phonon bands and the presence of defect modes evidence the cationic disorder allowed by this structure. |
| C1 | UFMG, Dept Fis, ICEx, BR-30123970 Belo Horizonte, MG, Brazil. Univ Maine Cristallogenese, UMR 6087, F-72085 Le Mans, France. |
| RP | Moreira, RL, UFMG, Dept Fis, ICEx, CP 702, BR-30123970 Belo Horizonte, MG, Brazil. |
| EM | bmoreira@fisica.ufmg.br |
| TC | 0 |
| PD | AUG 23 |
| PY | 2005 |
| VL | 17 |
| IS | 17 |
| BP | 4523 |
| EP | 4529 |
| UT | ISI:000231379300035 |
| ER |
| PT | J |
| AU | Westeel, F Quoix, E Moro-Sibilot, D Mercier, M Breton, JL Debieuvre, D Richard, P Haller, MA Milleron, B Herman, D Level, MC Lebas, FX Puyraveau, M Depierre, A |
| CA | GCOT |
| TI | Randomized study of maintenance vinorelbine in responders with advanced non-small-cell lung cancer |
| SO | JOURNAL OF THE NATIONAL CANCER INSTITUTE |
| AB | Background: Prolongation of chemotherapy duration, usually referred to as maintenance chemotherapy, has been considered as an approach to improve survival of patients with advanced non-small-cell lung cancer (NSCLC). If the maintenance regimen differs from the induction regimen, patients will receive not only higher total doses of chemotherapy but also earlier delivery of non-cross-resistant agents. We conducted a randomized trial to compare maintenance vinorelbine therapy with observation in previously untreated patients who responded to induction treatment with mitomycin-ifosfamide-cisplatin (MIC). Methods: Patients with stage IIIB NSCLC were treated with two monthly MIC cycles followed by radiotherapy; those with "wet" stage IIIB (pleural or pericardial involvement), with stage IIIB with supraclavicular node involvement, or stage IV (i.e., metastatic) NSCLC were treated with four monthly MIC cycles. Patients who responded to induction treatment were randomly assigned to receive intravenous vinorelbine at a dose of 25 mg center dot m(-2). wk(-1) for 6 months or no further treatment. Survival comparisons used the log-rank test and the Cox regression adjusted for stage. All statistical tests were two-sided. Results: A total of 573 patients were registered, of whom 227 responded to induction treatment and 181 were randomly assigned (91 to maintenance vinorelbine and 90 to observation) between January 1994 and March 2000. One- and 2-year survival rates were 42.2% and 20.1% in the vinorelbine arm and 50.6% and 20.2% in the observation arm, respectively (log-rank P = .48). The hazard ratio of survival after adjustment on stage, in the vinorelbine arm relative to the observation arm, was 1.08 (95% confidence interval = 0.79 to 1.47; P = .65). There was also no difference between arms in progression-free survival (log-rank P = .32). Conclusion: Maintenance vinorelbine did not improve survival of patients with advanced NSCLC who responded to induction MIC treatment. Nevertheless, other agents, including docetaxel and targeted agents, should be evaluated as maintenance agents before the concept is abandoned. |
| C1 | Jean Minjoz Univ Hosp, Chest Dis Dept, Besancon, France. Univ Hosp, Chest Dis Dept, Strasbourg, France. Univ Hosp, Chest Dis Dept, Grenoble, France. Univ Hosp, Besancon, France. Gen Hosp, Chest Dis Dept, Belfort, France. Gen Hosp, Chest Dis Dept, Vesoul, France. Gen Hosp, Chest Dis Dept, St Omer, France. Univ Hosp, Chest Dis Dept, Nancy, France. Tenon Univ Hosp, Chest Dis Dept, Paris, France. Gen Hosp, Chest Dis Dept, Nevers, France. Gen Hosp, Chest Dis Dept, Verdun, France. Gen Hosp, Chest Dis Dept, Le Mans, France. |
| RP | Depierre, A, Ctr Hosp Univ Jean Minjoz, Serv Pneumol, Blvd Fleming, F-25030 Besancon, France. |
| EM | pneumo-depierre@ufc-chu.univ-fcomte.fr |
| TC | 0 |
| PD | APR 6 |
| PY | 2005 |
| VL | 97 |
| IS | 7 |
| BP | 499 |
| EP | 506 |
| UT | ISI:000231113100011 |
| ER |
| PT | J |
| AU | Fellah, ZEA Wirgin, A Fellah, M Sebaa, N Depollier, C Lauriks, W |
| TI | A time-domain model of transient acoustic wave propagation in double-layered porous media |
| SO | JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA |
| AB | This paper concerns a time-domain model of transient wave propagation in double-layered porous materials. An analytical derivation of reflection and transmission scattering operators is given in the time domain. These scattering kernels are the medium's responses to an incident acoustic pulse. The expressions obtained take into account the multiple reflections occurring at the interfaces of the double-layered material. The double-layered porous media consist of two slabs of homogeneous isotropic porous materials with a rigid frame. Each porous slab is described by a temporal equivalent fluid model, in which the acoustic wave propagates only in the fluid saturating the material. In this model, the inertial effects are described by the tortuosity; the viscous and thermal losses of the medium are described by two susceptibility kernels which depend on the viscous and thermal characteristic lengths. Experimental and numerical results are given for waves transmitted and reflected by double-layered porous media formed by air-saturated plastic foam samples. (C) 2005 Acoustical Society of America. |
| C1 | Lab Mecan & Acoust, CNRS, UPR 7051, F-13009 Marseille, France. USTHB, Inst Phys, Phys Theor Lab, Bab Ezzouar 16111, Algeria. Univ Maine, Acoust Lab, CNRS, UMR 6613, F-72085 Le Mans, France. Katholieke Univ Leuven, Lab Akoestiek & Therm Fys, B-3001 Heverlee, Belgium. |
| RP | Fellah, ZEA, Lab Mecan & Acoust, CNRS, UPR 7051, 31 Chemin Joseph Aiguier, F-13009 Marseille, France. |
| TC | 0 |
| PD | AUG |
| PY | 2005 |
| VL | 118 |
| IS | 2 |
| BP | 661 |
| EP | 670 |
| UT | ISI:000231210500016 |
| ER |
| PT | J |
| AU | Thomas, JH Pascal, JC |
| TI | Wavelet preprocessing for lessening truncation effects in nearfield acoustical holography |
| SO | JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA |
| AB | The goal of planar nearfield acoustical holography (NAH) is to recover the sound field at the sound source from pressure measurements made close to the source plane. The theory requires the pressure to be measured over a complete plane. Because experimentation consists of acquiring only a finite measurement aperture of the pressure field, it naturally causes erroneous values in the reconstructed field. Wavelet preprocessing applied to the pressure measurements in the nearfield provides a solution to lessen the effects due to the truncation of the hologram. The approach is based on a multiresolution analysis of the field from different wave number bands followed by selective spatial filtering of effects highlighted by the first analysis. Experimental results show the relevance of the method by comparison to standard NAH involving exponential filtering in the wave number domain. The computation of objective indicators based on distance measurements between wave number spectra and comparisons between patterns composed of relevant features drawn from experimental data are proposed to give objective criteria to prove the viability of the method. (C) 2005 Acoustical Society of America. |
| C1 | Univ Maine, CNRS,UMR 6613, Acoust Lab, F-72085 Le Mans, France. |
| RP | Thomas, JH, Univ Maine, CNRS,UMR 6613, Acoust Lab, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | jean-hugh.thomas@univ-lemans.fr jean-claude.pascal@univ-lemans.fr |
| TC | 0 |
| PD | AUG |
| PY | 2005 |
| VL | 118 |
| IS | 2 |
| BP | 851 |
| EP | 860 |
| UT | ISI:000231210500033 |
| ER |
| PT | J |
| AU | Saada, MA Hemon-Ribaud, A Leblanc, M Maisonneuve, V |
| TI | Conservation of [(C2H4NH3)(3)N](2)center dot(ZrF7)(2)center dot H2O layers during the topotactic dehydration of [(C2H4NH3)(3)N](2)center dot(ZrF7)(2)center dot 9H(2)O |
| SO | JOURNAL OF FLUORINE CHEMISTRY |
| AB | Tren amine cations [(C2H4NH3)(3)N](3+) and zirconate or tantalate anions adopt a ternary symmetry in two hydrates, [H(3)tren](2)(.)(ZrF7)(2)(.)9H(2)O and [H(3)tren](6)(.)(ZrF7)(2)(.)(TaOF6)(4)(.)3H(2)O, which crystallise in R32 space group with a(H) = 8.871 (2)angstrom, c(H) = 38.16 (1) angstrom and a(H) = 8.758 (2) angstrom, c(H) = 30.112 (9) angstrom, respectively. Similar [H(3)tren]2(.)(MX7)(2)(H2O)-H-. (M = Zr, Ta; X = F, O) sheets are found in both structures; they are separated by a water layer (O-w(2)-O-w(3)) in [H(3)tren](2)(.)(ZrF7)(2)(.)9H(2)O. Dehydration of [H(3)tren](2)(.)(ZrF7)(2)(.)9H(2)O starts at room temperature and ends at 90 degrees C to give [H(3)tren](2)(.)(ZrF7)(2)(H2O)-H-.. [H(3)tren](2)(.)(ZrF7)(2)(H2O)-H-. layers remain probably unchanged during this dehydration and the existence of one intermediate [H(3)tren](2)(.)(ZrF7)(2)(.)3H(2)O hydrate is assumed. 0,(1) molecules are tightly hydrogen bonded with -NH3+ groups and decomposition of [H(3)tren](2)(.)(ZrF7)(2)(H2O)-H-. occurs from 210 degrees C to 500 degrees C to give successively [H(3)tren](2)(.)(ZrF6)(.)(Zr2F12) (285 degrees C), an intermediate unknown phase (320 degrees C) and ZrF4. (c) 2005 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, Fac Sci & Tech, CNRS, UMR 6010,Lab Oxydes & Fluorures, F-72085 Le Mans, France. Fac Sci Bizerte, Lab Chim Inorgan & Struct, Zarzouna 7021, Tunisia. |
| RP | Maisonneuve, V, Univ Maine, Fac Sci & Tech, CNRS, UMR 6010,Lab Oxydes & Fluorures, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | vincent.maisonneuve@univ-lemans.fr |
| TC | 0 |
| PD | JUL |
| PY | 2005 |
| VL | 126 |
| IS | 7 |
| BP | 1072 |
| EP | 1077 |
| UT | ISI:000231102900012 |
| ER |
| PT | J |
| AU | Tigrine, R Khater, A Rafil, O Belhadi, M |
| TI | Vibration spectra of disordered crystalline surface cluster |
| SO | MODERN PHYSICS LETTERS B |
| AB | A method is presented for the determination of the energies of the localized vibration modes around isolated inhomogeneity, inside a square crystalline surface. The defect breaks the translational symmetry in two directions and gives rise to localized phonons on its neighborhood. Typical dispersion curves for modes of energies along the inhomogeneity are given with their polarizations. These localized modes energies are compared with the vibration modes of the free molecule. The vibration Green's functions are determined for the system and the spectral and state densities are presented numerically for atomic sites that constitute a minimum representation set in the neighborhood of the defect. A hyperfine resonance structure that permits the analysis of the evolution of the dynamics from half-space to others is obtained. This analytic approach is applicable to different surface cluster configurations for the same underlying substrate square symmetry in the present model, which underlies the general character of the method. |
| C1 | Univ Maine, Lab Phys & Etat Condense, F-72085 Le Mans, France. Univ Mouloud Mammeri, Lab Phys & Chim Quant, Tizi Ouzou 1500, Algeria. Univ Mouloud Mammeri, Fac Sci, Dept Phys, Tizi Ouzou 1500, Algeria. |
| RP | Tigrine, R, Univ Maine, Lab Phys & Etat Condense, F-72085 Le Mans, France. |
| EM | rigrine@univ-lemans.fr |
| TC | 0 |
| PD | JUN 20 |
| PY | 2005 |
| VL | 19 |
| IS | 13-14 |
| BP | 625 |
| EP | 635 |
| UT | ISI:000231001100002 |
| ER |
| PT | J |
| AU | Ornetti, P Solau, E Gaudin, P Sibilia, J Berthelot, JM Puechal, X Tavernier, C Maillefert, JF |
| CA | French Soc Rheumatology |
| TI | Increase in methotrexate dose in patients with rheumatoid arthritis who have an inadequate response to infliximab |
| SO | ANNALS OF THE RHEUMATIC DISEASES |
| C1 | Dijon Univ Hosp, Dept Rheumatol, Dijon, France. Lille Univ Hosp, Dept Rheumatol, Lille, France. Grenoble Univ Hosp, Dept Rheumatol, Grenoble, France. Strasbourg Univ Hosp, Dept Rheumatol, Strasbourg, France. Nantes Univ Hosp, Dept Rheumatol, Nantes, France. Le Mans Hosp, Dept Rheumatol, Le Mans, France. |
| RP | Maillefert, JF, Hop Gen, Dept Rheumatol, 3 Rue Faubourg Raines, F-21000 Dijon, France. |
| EM | jean-francis.maillefert@chu-dijon.fr |
| TC | 0 |
| PD | SEP |
| PY | 2005 |
| VL | 64 |
| IS | 9 |
| BP | 1379 |
| EP | 1380 |
| UT | ISI:000231208700032 |
| ER |
| PT | J |
| AU | Friese, K Grzechnik, A Morgenroth, W Buth, G Doyle, S Gesland, JY |
| TI | Synchrotron study of pyrochlore-related NaCdZn2F7 |
| SO | ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE |
| AB | The crystal structure of pyrochlore-related NaCdZn2F7 ( sodium cadmium dizinc heptafluoride) has been determined via synchrotron diffraction. Zn is octahedrally coordinated by fluorine. Na and Cd are both coordinated by eight anions. Despite the different chemical characteristics and valences, no indication of ordering of Na and Cd was observed. |
| C1 | Univ Pais Vasco, Fac Ciencia & Tecnol, Dept Fis Mat Condensada, E-48080 Bilbao, Spain. DESY, HASYLAB, D-22607 Hamburg, Germany. Forschungszentrum Karlsruhe GmbH, Inst Synchrotron Radiat, D-76344 Eggenstein Leopold Shafe, Germany. Univ Maine Cristallogenese, UMR 6087, F-72025 Le Mans, France. |
| RP | Friese, K, Univ Pais Vasco, Fac Ciencia & Tecnol, Dept Fis Mat Condensada, Apdo 644, E-48080 Bilbao, Spain. |
| EM | wmbfrxxk@lg.ehu.es |
| TC | 0 |
| PD | AUG |
| PY | 2005 |
| VL | 61 |
| PN | Part 8 |
| BP | I182 |
| EP | I184 |
| UT | ISI:000230945400019 |
| ER |
| PT | J |
| AU | Penelet, G Gusev, V Lotton, P Bruneau, M |
| TI | Experimental and theoretical study of processes leading to steady-state sound in annular thermoacoustic engines |
| SO | PHYSICAL REVIEW E |
| AB | This paper gives a simplified analytical description of spontaneous generation and finite amplitude saturation of sound in annular thermoacoustic engines, and also provides comparison with experiments. The model includes the precise description of thermoacoustic amplification of sound (induced by interaction between an heterogeneously heated stack of solid plates and resonant gas oscillations), which accounts for the details of the temperature distribution in the whole thermoacoustic device (i.e., which does not only account for the mean temperature gradient along the stack). The saturation of the acoustic wave amplitude is described by taking into account both the reverse influence of high amplitude acoustic field on temperature field, and the dissipation of acoustic energy due to higher harmonics generation and minor losses (vortex generation). From the comparison between simulation results and experiments, it is demonstrated that the dynamical behavior observed in our experimental device is predominantly controlled by the effects of acoustic streaming and acoustically enhanced thermal conductivity tending not only to reduce the externally imposed temperature gradient along the stack, but also to change the shape of the temperature field. |
| C1 | Univ Maine, Acoust Lab, CNRS, UMR 6613, F-72085 Le Mans, France. CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. |
| RP | Penelet, G, Univ Maine, Acoust Lab, CNRS, UMR 6613, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| TC | 0 |
| PD | JUL |
| PY | 2005 |
| VL | 72 |
| IS | 1 |
| PN | Part 2 |
| AR | 016625 |
| UT | ISI:000230887100103 |
| ER |
| PT | J |
| AU | Schmidt, CTA |
| TI | Of robots and believing |
| SO | MINDS AND MACHINES |
| AB | Discussion about the application of scientific knowledge in robotics in order to build people helpers is widespread. The issue herein addressed is philosophically poignant, that of robots that are "people". It is currently popular to speak about robots and the image of Man. Behind this lurks the dialogical mind and the questions about the significance of an artificial version of it. Without intending to defend or refute the discourse in favour of 'recreating' Man, a lesser familiar question is brought forth: "and what if we were capable of creating a very convincible replica of man (constructing a robot-person), what would the consequences of this be and would we be satisfied with such technology?" Thorny topic; it questions the entire knowledge foundation upon which strong AI/Robotics is positioned. The author argues for improved monitoring of technological progress and thus favours implementing weaker techniques. |
| C1 | Le Mans Univ, LIUM Comp Sci Lab, CNRS, FRE 2370, Le Mans, France. |
| EM | Colin.Schmidt@univ-lemans.fr |
| TC | 0 |
| PD | MAY |
| PY | 2005 |
| VL | 15 |
| IS | 2 |
| BP | 195 |
| EP | 205 |
| UT | ISI:000230964000003 |
| ER |
| PT | J |
| AU | Ittah, M Gottenberg, JE Proust, A Hachulla, E Puechal, X Loiseau, P Mariette, X Miceli-Richard, C |
| TI | No evidence for association between 1858 C/T single-nucleotide polymorphism of PTPN22 gene and primary Sjogren's syndrome |
| SO | GENES AND IMMUNITY |
| AB | One-third of first-degree relatives of patients with primary Sjogren's syndrome ( pSS) suffer from other autoimmune diseases, including type I diabetes, systemic lupus erythematosus and autoimmune thyroiditis. Recently, 1858 C/T polymorphism of PTPN22 gene was reported to predispose to these autoimmune diseases. We decided to investigate whether PTPN22 gene polymorphism was also involved in the genetic predisposition to pSS in a case-control study, including 183 patients with pSS and 172 healthy controls. No significant differences in allele ( T allele frequency: 7.7% in patients with pSS vs 7.8% in controls, P 0.9) and genotype frequencies of PTPN22 polymorphism were detected between patients with pSS and controls. PTPN 22 gene polymorphism was not associated with a specific pattern of autoantibody secretion either. Thus, 1858 C/T polymorphism of PTPN22 gene is not involved in genetic predisposition to pSS. |
| C1 | Hop Bicetre, INSERM, AP HP, Serv Rhumatol,E109, F-94275 Le Kremlin Bicetre, France. CHU Claude Huriez, Lille, France. CHU Mans, Le Mans, France. Hop St Louis, INSERM 396, AP HP, Paris, France. |
| RP | Mariette, X, Hop Bicetre, INSERM, AP HP, Serv Rhumatol,E109, 78 Rue Gen Leclerc, F-94275 Le Kremlin Bicetre, France. |
| EM | xavier.mariette@bct.ap-hop-paris.fr |
| TC | 0 |
| PD | AUG |
| PY | 2005 |
| VL | 6 |
| IS | 5 |
| BP | 457 |
| EP | 458 |
| UT | ISI:000230882000012 |
| ER |
| PT | J |
| AU | Vasilief, I Guy, S Jacquier, B Boulard, B Gao, YP Duverger, C Haquin, H Nazabal, V Adam, JL Couchaud, M Fulbert, L Cassagnettes, C Rooms, F Barbier, D |
| TI | Propagation losses and gain measurements in erbium-doped fluoride glass channel waveguides by use of a double-pass technique |
| SO | APPLIED OPTICS |
| AB | We have studied Er3+, Yb3+, and Ce3+ codoped microchannel waveguides that were developed by two methods: ionic exchange for heavy metal fluoride glasses [ZrF4 -BaF2-A1F(3)-CeF3 (ZBAC)] and vapor phase deposition for transition metal fluoride glasses [PbF2-ZnF2-GaF3 (PZG)] by using a double-pass technique. For the first time to our knowledge, the measurement of propagation losses and amplification tests were carried out by use of the same experimental setup, leading to complete characterization of the waveguides. Net gains higher than 1 dB/cm were achieved in ZBAC Er/Ce single-mode fluoride glass waveguides. (c) 2005 Optical Society of America. |
| C1 | Univ Lyon 1, Lab Physico Chim Mat Luminescents, CNRS, UMR 5620, F-69622 Villeurbanne, France. Univ Maine, Lab Oxydes & Fluorures, Fac Sci, UMR 6010, F-72085 Le Mans, France. Univ Rennes 1, CNRS, UMR 6512, Lab Verres & Ceram, F-35042 Rennes, France. Commissariat Energie Atom, Lab Elect Technol Informat, F-38054 Grenoble, France. Teem Photon France, F-38246 Meylan, France. |
| RP | Vasilief, I, Univ Lyon 1, Lab Physico Chim Mat Luminescents, CNRS, UMR 5620, Domaine Sci Doua,10 Rue Andre Marie Ampere, F-69622 Villeurbanne, France. |
| EM | vasilief@pcml.univ-lyon1.fr |
| TC | 0 |
| PD | AUG 1 |
| PY | 2005 |
| VL | 44 |
| IS | 22 |
| BP | 4678 |
| EP | 4683 |
| UT | ISI:000230867900011 |
| ER |
| PT | J |
| AU | Pagnoux, C Mahr, A Cohen, P Hamidou, M Ruivard, M Puechal, X Mouthon, L Guillevin, L |
| TI | Treatment of ANCA-associated vasculitides (AASV): Corticosteroids and pulse cyclophosphamide followed by maintenance therapy with methotrexate or azathioprine: A prospective multicenter randomized trial (wegent) |
| SO | ANNALS OF THE RHEUMATIC DISEASES |
| C1 | Hop Cochin, F-75674 Paris, France. Hop Hotel Dieu, Nantes, France. Hop Hotel Dieu, Clermont Ferrand, France. Hop Mans, Le Mans, France. |
| TC | 0 |
| PD | JUL |
| PY | 2005 |
| VL | 64 |
| SU | Suppl. 3 |
| BP | 80 |
| EP | 80 |
| UT | ISI:000229909100248 |
| ER |
| PT | J |
| AU | Gottenberg, J Ittah, M Hachulla, E Puechal, X Loiseau, P Mariette, X Miceli-Richard, C |
| TI | No evidence for association between 1858 C/T single-nucleotide polymorphism of PTPN22 gene and primary Sjogren's syndrome |
| SO | ANNALS OF THE RHEUMATIC DISEASES |
| C1 | Hop Bicetre, Le Kremlin Bicetre, France. CHU Claude Huriez, Lille, France. CHU Mans, Le Mans, France. Hop St Louis, Paris, France. |
| TC | 0 |
| PD | JUL |
| PY | 2005 |
| VL | 64 |
| SU | Suppl. 3 |
| BP | 306 |
| EP | 306 |
| UT | ISI:000229909101354 |
| ER |
| PT | J |
| AU | Pham, T Deprez, X Goupille, P Hilliquin, P Puechal, X Schaeverbeke, T Marlette, X Sibilia, J |
| TI | TNF-blocking drugs clinical tool guide elaboration |
| SO | ANNALS OF THE RHEUMATIC DISEASES |
| C1 | CHU Marseille, Marseille, France. CH Valenciennes, Valenciennes, France. CHU Tours, Tours, France. CH Corbeil Essonnes, Corbeil Essonnes, France. CH Le Mans, Le Mans, France. CHU Bordeaux, Bordeaux, France. CHU Bicetre, Le Kremlin Bicetre, France. CHU Strasbourg, F-67000 Strasbourg, France. |
| TC | 0 |
| PD | JUL |
| PY | 2005 |
| VL | 64 |
| SU | Suppl. 3 |
| BP | 404 |
| EP | 404 |
| UT | ISI:000229909102012 |
| ER |
| PT | J |
| AU | Zaitsev, VY Gusev, VE Zaytsev, YV |
| TI | Mutually induced variations in dissipation and elasticity for oscillations in hysteretic materials: Non-simplex interaction regimes |
| SO | ULTRASONICS |
| AB | Self-action and effects mutually induced by oscillations interacting in hysteretic media are investigated analytically and numerically. Special attention is paid to non-simplex processes for which presence of intermediate extrema results in appearance of minor nested loops inside the main hysteretic stress-strain loop. Non-simplex regimes are typical of interaction of excitations having different frequencies and amplitudes, but comparable strain rates. It is found that, due to transition between the regimes, frequency and amplitude dependencies of the variations in elasticity and dissipation induced by one wave for another one may become non-monotonous. Either additional dissipation or induced transparency may occur in different regimes. The results obtained are important for correct interpretation of experimental data on nonlinear acoustic interactions in rocks and many other microstructured (mesoscopic) solids that are known to exhibit elastic hysteresis and memory properties. (c) 2005 Elsevier B.V. All rights reserved. |
| C1 | RAS, Inst Appl Phys, Nizhny 603950, Novgorod, Russia. Univ Maine, F-72085 Le Mans 09, France. |
| RP | Zaitsev, VY, RAS, Inst Appl Phys, 46 Uljanova St, Nizhny 603950, Novgorod, Russia. |
| EM | vyuzai@hydro.appl.sci-nnov.ru |
| TC | 0 |
| PD | AUG |
| PY | 2005 |
| VL | 43 |
| IS | 8 |
| BP | 699 |
| EP | 709 |
| UT | ISI:000230739400011 |
| ER |
| PT | J |
| AU | Wolf, W Sticht, J Mavromaras, A Leblanc, B Saxe, P Wimmer, E |
| TI | Vibrational properties and thermochemistry from first principles |
| SO | MATERIALS SCIENCE-POLAND |
| AB | The simulation of vibrational properties and finite temperature effects based on ab initio calculation of phonons within the direct approach is discussed. The implementation of the approach within an automated computational framework is outlined, and applications in rather diverse fields are demonstrated: phonon dispersion of GaAs, Kohn anomaly in Niobium, rattling modes in thermoelectric skutterudites, reaction enthalpies and formation enthalpies of hydrides and hydrogen storage materials, phase transformations, surface reconstruction of Si( 111), and adsorption of CO molecules on a Ni( 001) surface. |
| C1 | Mat Design Sarl, F-72000 Le Mans, France. Mat Design Inc, Taos, NM 87571 USA. |
| RP | Wolf, W, Mat Design Sarl, 44 Ave FA Bartholdi, F-72000 Le Mans, France. |
| EM | wwolf@materialsdesign.com |
| TC | 0 |
| PY | 2005 |
| VL | 23 |
| IS | 2 |
| BP | 365 |
| EP | 373 |
| UT | ISI:000230755000004 |
| ER |
| PT | J |
| AU | Maurel, A Pagneux, V Boyer, D Lund, F |
| TI | Elastic wave propagation through a distribution of dislocations |
| SO | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING |
| AB | We study the coherent propagation of an elastic wave in a two-dimensional continuous elastic medium filled with dislocation arrays randomly distributed and oriented in space. This configuration reasonably mimics grain boundaries in polycrystals. Interest is in evaluating the plastic contributions to the multiple scattering of waves in polycrystals that may superpose to other known scattering processes, like scattering due to inhomogeneities of elastic properties among grains. Calculations are performed in a multiple scattering formalism, based on the derivation of the so-called mass operator, in the approximation of weak scattering. We find that sound attenuation increases when the frequency decreases, a trend opposite to the usual behavior, suggesting that dislocations could sensibly modify the acoustic properties of materials at low frequency. (c) 2005 Elsevier B.V. All rights reserved. |
| C1 | ESPCI, Lab Ondes & Acoust, UMR 7587, Paris, France. Univ Mans, UMR 6613, Acoust Lab, Le Mans, France. UNAM, Inst Fis, Mexico City, DF, Mexico. Univ Chile, CIMAT, Santiago, Chile. Univ Chile, Dept Phys, Santiago, Chile. |
| RP | Maurel, A, ESPCI, Lab Ondes & Acoust, UMR 7587, Paris, France. |
| EM | agnes.maurel@espci.fr |
| TC | 0 |
| PD | JUL 25 |
| PY | 2005 |
| VL | 400 |
| BP | 222 |
| EP | 225 |
| UT | ISI:000230681900047 |
| ER |
| PT | J |
| AU | Brotons, G Dubois, M Belloni, L Grillo, I Narayanan, T Zemb, T |
| TI | The role of counterions on the elasticity of highly charged lamellar phases: A small-angle x-ray and neutron-scattering determination |
| SO | JOURNAL OF CHEMICAL PHYSICS |
| AB | The structure and fluctuations of the swollen L-alpha lamellar phase of highly charged surfactant didodecyldimethylammonium halide fluid bilayers (DDA(+)X(-)) are studied using high-resolution small-angle x-ray scattering and medium-resolution, high-contrast small-angle neutron-scattering. The Caille parameter eta, as a function of the swelling (L-alpha periodicity d), was determined from the full q-range fits of the measured scattering profiles for three different counterions (X- = Cl-, Br-, and NO3-). This parameter quantifies the amplitude of the membrane fluctuations within the Landau-de Gennes smectic-A linear elasticity theory. The different anions used gave strong specific effects at the maximum swelling of the L-alpha phase, while at lower swellings a two-phase coexistence of swollen and collapsed lamellae (d similar to 30 and similar to 80 angstrom) was observed for bromide and nitrate ions. Over the intermediate dilution range for all three counterions, a single L-alpha phase can be continuously swollen with pure water which is governed by an equation of state (i.e., osmotic pressure versus period) and thermally excited fluctuation amplitudes that can be well described by the same Poisson-Boltzmann calculation. The membranes were found to be slightly stiffer than predicted by purely electrostatic repulsions, and this is tentatively attributed to an extra bending rigidity contribution from the surfactant chains. (c) 2005 American Institute of Physics. |
| C1 | CEA Saclay, Serv Chim Mol, Commissariat Energie Atom, F-91191 Gif Sur Yvette, France. Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France. European Synchrotron Radiat Facil, F-38043 Grenoble, France. |
| RP | Brotons, G, Univ Maine, CNRS, UMR 6087, LPEC, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | guillaume.brotons@univ-lemans.fr duboism@drecam.saclay.cea.fr luc@drecam.saclay.cea.fr grillo@ill.fr narayan@esrf.fr zemb@drecam.saclay.cea.fr |
| TC | 0 |
| PD | JUL 8 |
| PY | 2005 |
| VL | 123 |
| IS | 2 |
| AR | 024704 |
| UT | ISI:000230653700031 |
| ER |
| PT | J |
| AU | Colinet, C Wolf, W Podloucky, R Pasturel, A |
| TI | Ab initio study of the structural stability of TiSi2 compounds |
| SO | APPLIED PHYSICS LETTERS |
| AB | In order to clarify the allotropic structural properties of TiSi2 we calculated by means of an ab initio density functional approach the total energies of the C49, C54, and C40 crystal structures of the bulk compound. We found that at T=0 K the C49 structure of TiSi2 is its most stable phase whereas the C54 structure, which experimentally is considered to be the ground state, is less favorable. Furthermore, by calculating the vibrational properties and the corresponding temperature dependent free energies of the three structures we predict a structural transition from C49 to C54 at about 1100 K. We also demonstrate that point defects as well as stacking faults, which are known to be present in the C49 phase, have no significant influence on the structural stability. (c) 2005 American Institute of Physics. |
| C1 | Thermodynam & Physicochim Met Lab, F-38402 St Martin Dheres, France. Mat Design sarl, Le Mans 72000, France. Univ Vienna, Inst Phys Chem, A-1090 Vienna, Austria. CNRS, Lab Phys & Modelisat Milieux Condenses, F-38042 Grenoble, France. |
| RP | Colinet, C, Thermodynam & Physicochim Met Lab, BP 75, F-38402 St Martin Dheres, France. |
| TC | 0 |
| PD | JUL 25 |
| PY | 2005 |
| VL | 87 |
| IS | 4 |
| AR | 041910 |
| UT | ISI:000230725900023 |
| ER |
| PT | J |
| AU | Marsac, Y Nourry, A Legoupy, S Pipelier, M Dubreuil, D Aubertin, AM Bourgougnon, N Benhida, R Huet, F |
| TI | Synthesis of mono- and polyhydroxylated cyclobutane nucleoside analogs |
| SO | TETRAHEDRON |
| AB | Enantiomerically enriched cyclobutene compounds 13 and 24 are good precursors of several cyclobutane nucleoside analogs. The synthetic ways involve, in the key step, either hydroboration or dihydroxylation. (c) 2005 Elsevier Ltd. All rights reserved. |
| C1 | Univ Maine, Fac Sci & Tech, CNRS, UMR 6011,Lab Synth Organ,UCO2M, F-72085 Le Mans, France. Fac Sci & Tech, CNRS, FR 2465, Synth Organ Lab, F-44322 Nantes, France. Univ Strasbourg 1, INSERM, U 544, Fac Med,Inst Virol, F-67000 Strasbourg, France. Ctr Rech & Enseignement Yves Coppens, Lab Biol & Chim Mol, F-56017 Vannes, France. Univ Nice, CNRS, UMR 6001, Chim Bioorgan Lab, F-06108 Nice, France. |
| RP | Legoupy, S, Univ Maine, Fac Sci & Tech, CNRS, UMR 6011,Lab Synth Organ,UCO2M, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | slegoupy@univ-lemans.fr fhuet@univ-lemans.fr |
| TC | 0 |
| PD | AUG 8 |
| PY | 2005 |
| VL | 61 |
| IS | 32 |
| BP | 7607 |
| EP | 7612 |
| UT | ISI:000230608500002 |
| ER |
| PT | J |
| AU | Desgranges, L Gramond, M Petot, C Petot-Ervas, G Ruello, P Saadi, B |
| TI | Characterisation of uranium vacancies in hyper stoichiometric uranium dioxide |
| SO | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY |
| AB | An experimental method, based on measurements of the expansion of a single crystal as a function of the p(O-2) was used to determine the concentration of uranium vacancies in hyperstoichiometric Uranium dioxide. The results are consistent with the concentration of electrical carriers measured in the same conditions, they are also in qualitative agreement with a theoretical modelling proposed in the literature. However, an improved interpretation would require to take into account the clusters of oxygen interstitials and vacancies. (c) 2005 Elsevier Ltd. All rights reserved. |
| C1 | CEA Cadarache, DEC, SA3C, L2EC, F-13108 St Paul Les Durance, France. Ecole Cent Paris, SPMS, F-92295 Chatenay Malabry, France. Univ Maine, LPEC, F-72085 Le Mans, France. Univ Annaba, LESIM, Annaba 23200, Algeria. |
| RP | Desgranges, L, CEA Cadarache, DEC, SA3C, L2EC, Bat 316, F-13108 St Paul Les Durance, France. |
| EM | lionel.desgranges@cea.fr |
| TC | 0 |
| PY | 2005 |
| VL | 25 |
| IS | 12 |
| BP | 2683 |
| EP | 2686 |
| UT | ISI:000230569300147 |
| ER |
| PT | J |
| AU | Viyayakumar, M Pham, QN Bohnke, C |
| TI | Lithium lanthanum titanate ceramic as sensitive material for pH sensor: Influence of synthesis methods and powder grains size |
| SO | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY |
| AB | The lithium lanthanum titanate (LLTO), prepared by two different methods (solid state reaction and sol-gel), has been studied as sensitive element for detecting the pH variations in aqueous solutions when used as a potentiometric sensor. This property is dependent on mechanical and thermal treatments of the synthesised powder. A screening design was performed with the material obtained by solid state reaction. Several parameters (grinding time, heating rate for sintering process...) have been optimized. The main step, which increases the sensitivity, is the grinding of the powder before a heat treatment when the LLTO is synthesised by solid state reaction. We suppose that a small grains size of the powder is favourable to the pH variations sensitivity. A comparison with LLTO synthesised by the sol-gel route without grinding is also shown. The sensitivities of these two materials to the pH variations are very similar. (c) 2005 Elsevier Ltd. All rights reserved. |
| C1 | Univ Maine, UMR 6010 CNRS, Lab Oxydes & Fluorures, FR CNRS 2575,Inst Rech Ingn Mol & Mat Fonct, F-72085 Le Mans, France. |
| RP | Bohnke, C, Univ Maine, UMR 6010 CNRS, Lab Oxydes & Fluorures, FR CNRS 2575,Inst Rech Ingn Mol & Mat Fonct, Ave O messiaen, F-72085 Le Mans, France. |
| EM | claude.bohnke@univ-lemans.fr |
| TC | 0 |
| PY | 2005 |
| VL | 25 |
| IS | 12 |
| BP | 2973 |
| EP | 2976 |
| UT | ISI:000230569300206 |
| ER |
| PT | J |
| AU | Potel, C Baly, S de Belleval, JF Lowe, M Gatignol, P |
| TI | Deviation of a monochromatic Lamb wave beam in anisotropic multilayered media: Asymptotic analysis, numerical and experimental results |
| SO | IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL |
| AB | The aim of this paper is threefold: to describe the physical phenomenon of the excitation of modal waves such as Lamb waves, in anisotropic multilayered media, by a monochromatic incident beam, using an asymptotic approach; to present a three-dimensional model using the decomposition of the incident beam into monochromatic plane waves (the formalism is applied to the particle displacement vector); to illustrate the phenomenon both numerically and experimentally. Numerical and experimental maps of the reflected field of pressure are presented, and the reradiation of the Lamb wave beam in an oblique plane is theoretically and numerically illustrated. |
| C1 | Univ Maine, CNRS, Acoust Lab, UMR 6613, F-72085 Le Mans, France. Univ Technol Compiegue, CNRS, UMR, UTC,Lab Roberval, F-60205 Compiegne, France. Univ London Imperial Coll Sci Technol & Med, Dept Mech Engn, London SW7 2AZ, England. |
| RP | Potel, C, Univ Maine, CNRS, Acoust Lab, UMR 6613, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | Catherine.Potel@univ-lemans.fr |
| TC | 0 |
| PD | JUN |
| PY | 2005 |
| VL | 52 |
| IS | 6 |
| BP | 987 |
| EP | 1001 |
| UT | ISI:000230543800006 |
| ER |
| PT | J |
| AU | Gehanne, A Shayne, A Eltchaninoff, H Gilard, M Richard, P Range, G Hacot, JP Lefebvre, E Douillet, R Tirouvanziam, A Le Breton, H |
| TI | Interventricular management of patients over the age of 75 with acute coronary syndromes without persistent ST elevation |
| SO | ARCHIVES DES MALADIES DU COEUR ET DES VAISSEAUX |
| AB | The aim of this study was to assess the results of interventional
strategy in patients over 75 years of age admitted to hospital with
acute coronary syndromes (ACS) without persistent ST elevation. Over three months, patients over the age of 75 undergoing coronary angiography for ACS were included in a multicentre register and followed up for 6 months. A total of 126 patients with an average age of 79 were included: 70% had at least one poor prognostic factor. The treatment on admission included: Aspirin (84%), Clopidogrel (60%), anti GpIIb-IIIa (12%) and Heparin (81%, of which 3/4 of cases were low molecular weight heparins). Coronary angiography (average delay 80 hours) showed single, double and triple vessel disease in 21, 29 and 35% of cases respectively. Coronary angioplasty was proposed in 83 patients and carried out in 82. Eleven patients underwent coronary artery bypass grafting and 31 were treated medically. During the hospital phase, there were 3 major cardiovascular complications: I death during coronary angiography, 1 intra-stent thrombosis and 1 death in the group undergoing bypass grafting, with no major bleeding complications. At 6 months, there were 8 (6.5%) major cardiovascular adverse events with 6 in the "angioplasty" group; 5 deaths (3 cardiac deaths), 3 myocardial infarcts. Two thirds of patients were asymptomatic. The authors conclude that interventional strategy in ACS of elderly patients is associated with a low rate of major adverse events. The benefits of this strategy should be confirmed by randomised trial. |
| C1 | CHU Rennes, Ctr Cardiopneumol, Dept Cardiol, F-35033 Rennes, France. CHU Caen, Serv Cardiol, F-14033 Caen, France. Hop Charles Nicolle, CHU Rouen, Dept Cardiol, F-76031 Rouen, France. Hop Cavale, CHU Brest, Dept Cardiol, F-29609 Brest, France. Ctr Prive St Martin, Dept Hemodynam, F-14050 Caen, France. Ctr Medicochirurg Mans, Serv Cardiol, F-72000 Le Mans, France. CHU Nord, Hop Guillaume & Rene Laennec, Ctr Hemodynam & Radiol Thorac, F-44035 Nantes, France. |
| RP | Le Breton, H, CHU Rennes, Ctr Cardiopneumol, Dept Cardiol, Rue Henri Le Guilloux, F-35033 Rennes, France. |
| EM | herve.le.breton@chu-rennes.fr |
| TC | 0 |
| PD | JUN |
| PY | 2005 |
| VL | 98 |
| IS | 6 |
| BP | 615 |
| EP | 619 |
| UT | ISI:000230689200003 |
| ER |
| PT | J |
| AU | Leignel, V Hardivillier, Y Laulier, M |
| TI | Small metallothionein MT-10 genes in coastal and hydrothermal mussels |
| SO | MARINE BIOTECHNOLOGY |
| AB | Metallothioneins (MTs) are important proteins in the intracellular regulation of metals. In the Mytilidae family, which includes many economically important species, 2 major forms of MTs have been reported: MT-10 (10 kDa) and MT-20 (20 kDa). Many different MT-10 proteins have been isolated from the common species Mytillus edulis, which suggests that distinct MT-10 genes may occur in a single specimen. Some MT genes, involving 3 exons and 2 large introns, have been isolated in Mytilidae. Our aim was to determine whether intron-free forms of the MT-10 genes can exist, which could allow rapid transcription in response to exposure to metals. Our study focused on 2 species living under very different environmental conditions: Mytilus edulis (a coastal mussel) and Bathymodiolus thermophilus (a hydrothermal mussel). We report here the first description of small, intron-free MT-10 genes, possessing a correct open reading frame in these 2 species. |
| C1 | Univ Maine, Lab Biol & Genet Evolut, F-72085 Le Mans, France. |
| RP | Leignel, V, Univ Maine, Lab Biol & Genet Evolut, F-72085 Le Mans, France. |
| EM | vincent.leignel@univ-le-mans.fr |
| TC | 0 |
| PD | MAY-JUN |
| PY | 2005 |
| VL | 7 |
| IS | 3 |
| BP | 236 |
| EP | 244 |
| UT | ISI:000230431000012 |
| ER |
| PT | J |
| AU | Yoo, YG Paek, MC Greneche, JM Yang, DS Yu, SC |
| TI | Structural evolution of Fe80C20 alloy with alloying times |
| SO | JOURNAL OF APPLIED PHYSICS |
| AB | The structural evolution of mechanically alloyed Fe-C alloys was studied as a function of alloying times. The effect of alloying time on local structural changes of Fe-C has been investigated by means of 57 Fe Mossbauer spectrometry, extended x-ray-absorption fine structure (EXAFS), and x-ray diffraction (XRD). XRD pattern from 24 h alloyed Fe-C powder indicates at least the mixture of bcc-Fe and Fe3C phases. Mossbauer spectra analysis reveals that bcc-Fe decreases to the detriment of Fe3C phase with increasing alloying time, while both carbon-containing bcc-Fe and amorphouslike phase assigned to Fe located in grain boundaries (estimated at two atomic layers) remain alloying time independent. The variation of Fe3C phase content is in a good agreement with that observed by EXAFS analysis. 2005 American Institute of Physics. |
| C1 | Elect & Telecommun Res Inst, Informat Storage Device Team, Taejon 305350, South Korea. Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. Chungbuk Natl Univ, Sch Sci Educ, Div Phys, Cheongju 361763, South Korea. Chungbuk Natl Univ, Dept Phys, Cheongju 361763, South Korea. |
| RP | Yoo, YG, Elect & Telecommun Res Inst, Informat Storage Device Team, Taejon 305350, South Korea. |
| TC | 0 |
| PD | MAY 15 |
| PY | 2005 |
| VL | 97 |
| IS | 10 |
| PN | Part 2 |
| AR | 10F909 |
| UT | ISI:000230168300310 |
| ER |
| PT | J |
| AU | Bahlali, K Hamadene, S Mezerdi, B |
| TI | Backward stochastic differential equations with two reflecting barriers and continuous with quadratic growth coefficient |
| SO | STOCHASTIC PROCESSES AND THEIR APPLICATIONS |
| AB | We deal with backward stochastic differential equations with two reflecting barriers and a continuous coefficient which is, first, linear growth in (y,z) and then quadratic growth with respect to z. In both cases we show the existence of a maximal solution. (c) 2005 Elsevier B.V. All rights reserved. |
| C1 | UFR Sci, Maths Dept, La Garde, France. CNRS, CPT, F-13288 Marseille, France. Univ Maine, Lab Stat & Proc, F-72085 Le Mans, France. Univ M Khider, Dept Math, Biskra, Algeria. |
| RP | Bahlali, K, UFR Sci, Maths Dept, BP 132, La Garde, France. |
| EM | bahlali@univ-tln.fr hamadene@univ-lemans.fr bmezerdi@yaboo.fr |
| TC | 0 |
| PD | JUL |
| PY | 2005 |
| VL | 115 |
| IS | 7 |
| BP | 1107 |
| EP | 1129 |
| UT | ISI:000230255500003 |
| ER |
| PT | J |
| AU | Ben Hariz, S Wylie, JJ |
| TI | Rates of convergence for the change-point estimator for long-range dependent sequences |
| SO | STATISTICS & PROBABILITY LETTERS |
| AB | We consider a cumulative sum estimator for the change-point of a (possibly) long-range dependent sequence with a shift in the mean. We show that the 1/n convergence rate typical of the independent case is also achieved for short-memory and long-memory sequences. (c) 2005 Elsevier B.V. All rights reserved. |
| C1 | City Univ Hong Kong, Kowloon, Hong Kong, Peoples R China. Univ Maine, Lab Stat & Proc, Dept Math, F-72085 Le Mans, France. |
| RP | Wylie, JJ, City Univ Hong Kong, Kowloon, Hong Kong, Peoples R China. |
| EM | Samir.Ben_Hariz@univ-lemans.fr wylie@math.cityn.edu.hk |
| TC | 0 |
| PD | JUN 15 |
| PY | 2005 |
| VL | 73 |
| IS | 2 |
| BP | 155 |
| EP | 164 |
| UT | ISI:000230258400009 |
| ER |
| PT | J |
| AU | de Ledinghen, V Ratziu, V Causse, X Le Bail, B Castera, L Pilette, C Oules, V Renou, C Capron, D Oberti, F Gelsi, E Gournay, J Vallet-Pichard, A Le Provost, N Cadranel, JF Anhg, AFEF |
| TI | Pathological findings and predictive factors of liver fibrosis and minimal lesions in patients with persistent unexplained elevated transaminases. A prospective multicenter study |
| SO | JOURNAL OF HEPATOLOGY |
| C1 | CHU Bordeaux, Bordeaux, France. Univ Bordeaux, INSERM, E362, IFR66, Bordeaux, France. Pitie Salpetriere, Paris, France. CHR, Orleans, France. CHG, Le Mans, France. Hop St Joseph, Marseille, France. CH Creil, Creil, France. |
| TC | 0 |
| PD | APR |
| PY | 2005 |
| VL | 42 |
| SU | Suppl. 2 |
| BP | 3 |
| EP | 3 |
| UT | ISI:000229024000002 |
| ER |
| PT | J |
| AU | Panouille, M Durand, D Nicolai, T Larquet, E Boisset, N |
| TI | Aggregation and gelation of micellar casein particles |
| SO | JOURNAL OF COLLOID AND INTERFACE SCIENCE |
| AB | Micellar cascin particles (submicelles) are formed by removing calcium phosphate from native casein. The submicelles aggregate and eventually form a gel with a rate that increases strongly with increasing temperature and casein concentration. At low casein concentrations the gel is very weak and collapses under its own weight so that a precipitate is formed. The structure of the aggregates is studied using light scattering and cryo-electron microscopy. It is found that the aggregates have a self-similar structure with fractal dimension 2. The viscoelastic properties of the gel are studied by frequency scans of the loss and storage moduli during the gelation process. The bonds between the submicelles probably involve calcium phosphate complexes. (c) 2005 Elsevier Inc. All rights reserved. |
| C1 | Univ Maine, UMR, CNRS, F-72085 Le Mans, France. Univ Paris 06, Lab Mineral Cristallog Paris, UMR, CNRS, F-75252 Paris, France. Univ Paris 07, Lab Mineral Cristallog Paris, UMR, CNRS, F-75252 Paris, France. |
| RP | Nicolai, T, Univ Maine, UMR, CNRS, F-72085 Le Mans, France. |
| EM | dominique.durand@univ-lemans.fr taco.nicolai@univ-lemans.fr |
| TC | 0 |
| PD | JUL 1 |
| PY | 2005 |
| VL | 287 |
| IS | 1 |
| BP | 85 |
| EP | 93 |
| UT | ISI:000230324300011 |
| ER |
| PT | J |
| AU | Barbare, JC Bouche, O Bonnetain, F Raoul, JL Rongier, P Abergel, A Boige, V Denis, B Blanchi, A Pariente, A Milan, C Bedenne, L |
| TI | Randomized controlled trial of tamoxifen in advanced hepatocellular carcinoma |
| SO | JOURNAL OF CLINICAL ONCOLOGY |
| AB | Purpose Randomized studies on tamoxifen treatment of hepatocellular
carcinoma (HCC) produced conflicting results. The aim of this study was
to assess the efficacy of tamoxifen administration in improving overall
survival of patients with advanced HCC. Patients and Methods A total of 420 patients with HCC who were not suitable for surgery or local treatment were randomly assigned between April 1995 and May 2000: 210 in the control group and 210 in the tamoxifen group (20 mg/d orally). Patients with WHO performance status greater than 2, belonging to Child-Pugh class C, or with serum creatinine greater than 130 mu mol/L were not eligible. Results Tolerance was good and the main reported adverse effects were thrombophlebitis (three patients), nausea (two patients), and hot flushes (three patients). Outcome did not differ between the two treatment arms: estimated median survival was 4.8 and 4.0 months in the tamoxifen and in the control groups, respectively (P = 25). Univariate analysis showed significant association of survival with age, Okuda stage, WHO performance status, Child-Pugh class, intrahepatic tumor stage, alpha-fetoprotein serum concentration, and presence of extrahepatic spread, portal vein thrombosis, hepatomegaly, or hepatalgia. In a Cox proportional hazards model we found a significant beneficial effect of tamoxifen on survival in patients belonging to Okuda I or II stages. Conclusion In this large study, tamoxifen did not improve the survival of patients with advanced HCC, but there is a suggestion that patients without major hepatic insufficiency seem to have some survival benefit. New trials involving this specific population are warranted. (c) 2005 by American Society of Clinical Oncology. |
| C1 | Ctr Hosp, Serv Hepatogastroenterol, F-60321 Compiegne, France. Ctr Hosp Univ Reims, Reims, France. INSERM, Equipe Mixte, Dijon, France. Ctr Eugene Marquis, Rennes, France. CHU Clermont Ferrand, CHU Ambroise Pare, Assistance Publ Hosp Paris, Clermont Ferrand, France. Inst Gustave Roussy, Villejuif, France. Ctr Hosp Reg, Colmar, France. Ctr Hosp Reg, Le Mans, France. Ctr Hosp Reg, Pau, France. Federat Francophone Cancerol Digest, Assoc Natl Gastroenterol Hosp, Dijon, France. CHU Dijon, Dijon, France. |
| RP | Barbare, JC, Ctr Hosp, Serv Hepatogastroenterol, 8 Ave Henri Adnot, F-60321 Compiegne, France. |
| EM | jcbarbare001@ch-compiegne.rss.fr |
| TC | 0 |
| PD | JUL 1 |
| PY | 2005 |
| VL | 23 |
| IS | 19 |
| BP | 4338 |
| EP | 4346 |
| UT | ISI:000230332800014 |
| ER |
| PT | J |
| AU | Plenat, C |
| TI | On Nash problem of arc |
| SO | ANNALES DE L INSTITUT FOURIER |
| AB | Let H = boolean OR N-i the canonical decomposition of the space of arcs passing through a normal surface singularity. In this paper, we give two new conditions to ensure that N-i is not included in N-j. These conditions allow us to give two different direct demonstration of Nah problem for minimal sandwiched singularities. |
| C1 | Univ Maine, Dept Math, F-72085 Le Mans, France. |
| RP | Plenat, C, Univ Maine, Dept Math, Ave Messiaen, F-72085 Le Mans, France. |
| EM | camille-plenat@univ-lemans.fr |
| TC | 0 |
| PY | 2005 |
| VL | 55 |
| IS | 3 |
| BP | 805 |
| EP | + |
| UT | ISI:000230323900006 |
| ER |
| PT | J |
| AU | Boucle, J Herlin-Boime, N Kassiba, A |
| TI | Influence of silicon and carbon excesses on the aqueous dispersion of SiC nanocrystals for optical application |
| SO | JOURNAL OF NANOPARTICLE RESEARCH |
| AB | The dispersion behaviour of laser-synthesized silicon carbide nanoparticles (npSiC) in water is investigated by photon correlation spectroscopy (PCS). With regard to previous studies and due to an application in the processing of optical materials, this paper concerns low npSiC contents (from 0.05 to 10 wt.%). The role played by the particle surface state is be pointed out through the consideration of stochiometric (C/Si=1), carbon-rich (C/Si>1) and silicon-rich (C/Si < 1) nanopowders. Suspensions made from stoichiometric and silicon-rich nanopowders are easily dispersed and stable with time. The PCS measurements reveal in this case more than 95% of isolated nanoparticles, pointing out the key role of the oxidized layer covering the grain of silicon-rich samples. At the opposite, the carbon-rich powders are hardly dispersed in pure water, correlated with the presence of a relatively inert graphitic carbon layer at the grain surface. However, by addition of a commercial polymeric dispersant, all nanopowders induce high quality suspensions. In particular, the carbon-rich samples are easily dispersed, and possible dispersion mechanisms of npSiC in presence of a polymeric surfactant are discussed. The influence of the npSiC loading and the time evolution of the suspension are also presented. By considering stoichiometric, as well as carbon- and silicon-rich samples, this paper demonstrates the possibility to achieve high quality dispersions of SiC nanoparticles, whatever the chemical composition of the powder, as an easy step for optical material processing. |
| C1 | CEA Saclay, Serv Photons Atomes & Mol, Lab Francis Perrin, CEA CNRS URA 2453, F-91191 Gif Sur Yvette, France. Univ Maine, Lab Phys Etat Condense, CNRS UMR 6087, F-72085 Le Mans, France. |
| RP | Boucle, J, CEA Saclay, Serv Photons Atomes & Mol, Lab Francis Perrin, CEA CNRS URA 2453, Bat 522, F-91191 Gif Sur Yvette, France. |
| EM | herlin@drecam.cea.fr |
| TC | 0 |
| PD | JUN |
| PY | 2005 |
| VL | 7 |
| IS | 2 |
| BP | 275 |
| EP | 285 |
| UT | ISI:000230141900014 |
| ER |
| PT | J |
| AU | Rico, MM Greneche, JM Alcazar, GAP |
| TI | Effect of boron on structural and magnetic properties of the Fe60Al40 system prepared by mechanical alloying |
| SO | JOURNAL OF ALLOYS AND COMPOUNDS |
| AB | A new nanostructured system, FeAlB, with high content of boron, was prepared by mechanical alloying in a high-energy ball mill. X-ray diffraction (XRD) and Fe-57 Mossbauer spectroscopy were used to study structural and magnetic properties, respectively. Two crystalline phases were found, a majority one corresponding to an FeAl bcc phase and another in low proportion, corresponding to an Fe2B phase type which appears due to the presence of boron. Such a phase is also well observed from Mossbauer spectra. An anisotropic model was applied to fit X-ray patterns, giving evidence of different shapes of the nanocrystalline grains in agreement with the milling process involving both confinement and atomic diffusion. Also it was possible to postulate from both X-ray diffraction and Mossbauer spectrometry that there appears an additional contribution at low hyperfine fields attributed to grain boundaries. This contribution increases as both milling time and boron composition increases. (c) 2005 Elsevier B.V All rights reserved. |
| C1 | Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. Univ Valle, Dept Fis, Cali 25360, Colombia. |
| RP | Greneche, JM, Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. |
| EM | greneche@univ-lemans.fr |
| TC | 0 |
| PD | AUG 2 |
| PY | 2005 |
| VL | 398 |
| IS | 1-2 |
| BP | 26 |
| EP | 32 |
| UT | ISI:000230156200007 |
| ER |
| PT | S |
| AU | Vogtenhuber, D Houserova, J Wolf, W Podloucky, R Pfeiler, E Puschl, W |
| TI | Comparative ab initio study of point defect energies and atom migration profiles in the L1(2)-ordered intermetallic compounds Ni3Al, Ni3Ga, Pt3Ga, Pt3In |
| SO | DIFFUSION IN MATERIALS: DIMAT 2004, PT 1AND 2 |
| SE | DEFECT AND DIFFUSION FORUM |
| AB | Formation energies of antisite defects and vacancies were derived for the L1(2)-ordered intermetallics Ni3Al, Ni3Ga, Pt3Ga, and Pt3In by a supercell ab initio approach. A thermodynamical treatment of point-like defects was then used for the calculation of temperature-dependent defect properties. For all compounds antisite formation requires less energy than vacancy formation, the difference being larger (by 1.2 - 2 eV) for the Ni compounds than for the Pt compounds (by similar to 0.7-1.1 eV). Some of the tendencies observed can be made plausible by arguments of atom size and relative rigidity of the lattice. Energy profiles for atom jumps were calculated by statically displacing the jumping atom and relaxing the surrounding neighbours. The influence of variable atomic neighbourhoods on the migration barrier and the stability of the initial and final states were studied by systematically exchanging nearest and next nearest neighbour atoms. |
| C1 | Univ Vienna, Inst Mat Phys, A-1090 Vienna, Austria. Akad Ceske Republiky, Ustav Fyziky Mat, Inst Phys Mat, CZ-61662 Brno, Czech Republic. Mat Design Sarl, F-72000 Le Mans, France. Univ Vienna, Inst Phys Chem, A-1090 Vienna, Austria. |
| RP | Vogtenhuber, D, Univ Vienna, Inst Mat Phys, Strudlhofg 4, A-1090 Vienna, Austria. |
| EM | doris.vogtenhuber@univie.ac.at houserova@ipm.cz wwolf@materialsdesign.com raimund.podloucky@univie.ac.at wolfgang.pfeiler@univie.ac.at pue@ap.univie.ac.at |
| TC | 0 |
| PY | 2005 |
| VL | 237-240 |
| BP | 133 |
| EP | 138 |
| UT | ISI:000230138400016 |
| ER |
| PT | J |
| AU | Marais, S Gouanve, F Bonnesoeur, A Grenet, J Poncin-Epaillard, F Morvan, C Metayer, M |
| TI | Unsaturated polyester composites reinforced with flax fibers: effect of cold plasma and autoclave treatments on mechanical and permeation properties |
| SO | COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING |
| AB | In composite materials, fibers used as reinforcements are usually synthetic fibers such as glass. Since several years, for economic and environmental reasons, there has been an increasing interest in using plant fibers in composite systems. In this work, polyester composites reinforced by flax fibers submitted to helium cold plasma and/or autoclave treatments were investigated by means of water permeation measurements and mechanical tests. The analysis of the permeation and mechanical results has shown that plasma treatment improves fiber/matrix adhesion while autoclave treatment reduces water solubility in the fibers. For reinforced composites, therefore, autoclave treatment is more efficient in terms of water permeability and plasma treatment gives better stiffness in terms of mechanical properties. However, autoclave treatment followed by plasma treatment on flax fibers is recommended to obtain a good compromise for increasing both moisture resistance and stiffness of reinforced composites. (c) 2004 Elsevier Ltd. All rights reserved. |
| C1 | Univ Rouen, CNRS, Lab Polymeres Biopolymeres Membranes, UMR 6522,UFR Sci, F-76821 Mont St Aignan, France. Univ Maine, CNRS, UMR 6120, F-72017 Le Mans, France. Univ Rouen, Fac Sci, UMR 6037 TGV, F-76821 Mont St Aignan, France. |
| RP | Marais, S, Univ Rouen, CNRS, Lab Polymeres Biopolymeres Membranes, UMR 6522,UFR Sci, Bd Maurice Broglie, F-76821 Mont St Aignan, France. |
| EM | stephane.marais@univ-rouen.fr |
| TC | 0 |
| PY | 2005 |
| VL | 36 |
| IS | 7 |
| BP | 975 |
| EP | 986 |
| UT | ISI:000230195100011 |
| ER |
| PT | J |
| AU | Payan, C Roudot-Thoraval, F Marcellin, P Bled, N Duverlie, G Fouchard-Hubert, I Trimoulet, P Couzigou, P Cointe, D Chaput, C Henquell, C Abergel, A Pawlotsky, JM Hezode, C Coude, M Blanchi, A Alain, S Loustaud-Ratti, V Chevallier, P Trepo, C Gerolami, V Portal, I Halfon, P Bourliere, M Bogard, M Plouvier, E Laffont, C Agius, G Silvain, C Brodard, V Thiefin, G Buffet-Janvresse, C Riachi, G Grattard, F Bourlet, T Stoll-Keller, F Doffoel, M Izopet, J Barange, K Martinot-Peignoux, M Branger, M Rosenberg, A Sogni, P Chaix, ML Pol, S Thibault, V Opolon, P Charrois, A Serfaty, L Fouqueray, B Grange, JD Lefrere, JJ Lunel-Fabiani, F |
| TI | Changing of hepatitis C virus genotype patterns in France at the beginning of the third millenium: The GEMHEP GenoCII Study |
| SO | JOURNAL OF VIRAL HEPATITIS |
| AB | This cross-sectional study aimed to investigate, during a short period between 2000 and 2001, in a large population of patients with chronic hepatitis C, the epidemiological characteristics of hepatitis C virus (HCV) genotypes in France. Data from 26 referral centres, corresponding to 1769 patients with chronic hepatitis C were collected consecutively during a 6-month period. HCV genotyping in the 5'-non-coding region (NCR) was performed in each center using the line probe assay (LiPA, in 63% of cases), sequencing (25%) or primer-specific polymerase chain reaction (PCR) (12%). HCV genotypes 1a, 1b, 2, 3, 4, 5, non-subtyped 1 and mixed infection were found in 18, 27, 9, 21, 9, 3, 11 and 1% of our population, respectively. HCV genotype distribution was associated with gender, age, source and duration of infection, alanine aminotransferase (ALT) levels, cirrhosis, alcohol consumption, hepatitis B virus (HBV) and human immunodeficiency virus (HIV) coinfection. In multivariate analysis, only the source of infection was the independent factor significantly associated with genotype (P = 0.0001). In conclusion, this study shows a changing pattern of HCV genotypes in France, with i.v. drug abuse as the major risk factor, an increase of genotype 4, and to a lesser extent 1a and 5, and a decrease of genotypes 1b and 2. The modification of the HCV genotype pattern in France in the next 10 years may require new therapeutic strategies, and further survey studies. |
| C1 | CHU Angers, Angers, France. CHU Henri Mondor, Serv Sante Publ, F-94010 Creteil, France. Hop Beaujon, INSERM, Unite Rech, U481, Clichy, France. CHU Hop Sud, Virol Lab, Amiens, France. CHU Angers, Serv Med A, Angers, France. Hop Pellegrin, Virol Lab, F-33076 Bordeaux, France. Hop Pellegrin, Serv Hepatogastroenterol, F-33076 Bordeaux, France. Hop Antoine Beclere, Serv Hepatogastroenterol, F-92141 Clamart, France. CHU, Serv Hepatogastroenterol, Clermont Ferrand, France. Hop Henri Mondor, Virol Lab, F-94010 Creteil, France. Hop Henri Mondor, Serv Hepatogastroenterol, F-94010 Creteil, France. Mol Biol Lab, Le Mans, France. Serv Hepatogastroenterol, Le Mans, France. CHU Dupuytren, Virol Lab, Limoges, France. CHU Dupuytren, Serv Med Interne, Limoges, France. Hop Hotel Dieu, Serv Hepatol & Gastroenterol, Lyon, France. Hop Conception, Mol Biol Lab, Marseille, France. Hop Conception, Serv Hepatol, Marseille, France. Hop St Joseph, Dept Gastroenterol, Marseille, France. CH, Unite Biol Mol, Meaux, France. CHU, Meaux, France. CHU, Virol Lab, Nice, France. CHU Jean Bernard, Lab Microbiol B, Poitiers, France. CHU Jean Bernard, Serv Hepatogastroenterol, Poitiers, France. Hop Robert Debre, Virol Lab, Reims, France. Hop Robert Debre, Serv Hepatogastroenterol, Reims, France. Hop Charles Nicolle, Virol Lab, Rouen, France. Hop Charles Nicolle, Polyclin Malad Digest, Rouen, France. Hop Nord St Etienne, Virol Lab, St Etienne, France. Inst Virol, Strasbourg, France. Serv Hepatogastroenterol, Strasbourg, France. Hop Purpan, Virol Lab, Toulouse, France. Hop Purpan, Serv Hepatogastroenterol, Toulouse, France. GH Cochin St Vincent Paul, Serv Virol, Paris, France. GH Cochin St Vincent Paul, Serv Hepatol, Paris, France. Hop Necker Enfants Malad, Virol Lab, Paris, France. Hop Necker Enfants Malad, Serv Hepatol, Paris, France. GH Pitie Salpetriere, Virol Lab, CERVI, Paris, France. GH Pitie Salpetriere, Serv Hepatogastroenterol, Paris, France. Lab Virol, Paris, France. Serv Hepatol, Paris, France. Hop Tenon, Serv Explorat Fonctionnelles, F-75970 Paris, France. Hop Tenon, Serv Hepatogastroenterol, F-75970 Paris, France. Hop St Antoine, INTS, F-75571 Paris, France. |
| RP | Payan, C, CHU Angers, Lab Bacteriol Virol, 4 Rue Larrey, F-49033 Angers, France. |
| EM | chpayan@chu-angers.fr |
| TC | 0 |
| PD | JUL |
| PY | 2005 |
| VL | 12 |
| IS | 4 |
| BP | 405 |
| EP | 413 |
| UT | ISI:000230007200010 |
| ER |
| PT | J |
| AU | Dakhlaoui, A Maisonneuve, V Leblanc, M Smiri, LS |
| TI | [Zn(H2PO4)(4)](2-) clusters and infinity[Zn-2(HPO4)(3)(H2PO4)(2)](4-) layers in two new zinc phosphates templated by [H-2(4-amino-2.2.6.6-tetramethylpiperidine)](2+) cations |
| SO | JOURNAL OF SOLID STATE CHEMISTRY |
| AB | Two zinc phosphates (ZnPO), [H-2(N2C9H20)]center dot[Zn(H2PO4)(4)] (I) and [H-2(N2C9H20)](2)center dot[Zn-2(HPO4) (H2PO4)(2)]center dot H2O (II), are synthesized under hydrothermal conditions using 4-amino-2.2.6.6-tetramethylpiperidine as organic template. I crystallizes in P (1) over bar space group with a = 8.7398(3)angstrom, b = 9.0417(3)angstrom, c = 15.3822(1)angstrom, alpha =92.57(1)degrees, beta =89.76(1)degrees, gamma = 102.16(2)degrees, V = 1187.1(1)angstrom(3) and Z = 2. Its structure, refined to R = 0.029 and R-w = 0.076 for 4279 independent reflections, consists of [Zn(H2PO4)(4)](2-) clusters held together through strong hydrogen bonds to form pseudo-layers between which the doubly protonated amine molecules are inserted. II is monoclinic, C2, with a = 27.57(2)angstrom, b = 9.745(5)angstrom, c = 14.08(1)angstrom, beta = 103.72(5)degrees, V = 3675(4)angstrom(3) and Z = 4 (R = 0.079, R-w = 0.268, 2477 independent reflections). The structure of II consists of (infinity)[Zn-2(HPO4)(3)(H2PO4)(2)](4-) inorganic (2D) layers built up from vertex-sharing [ZnO4] and [(H-2/H)PO4] tetrahedra. Organic cations and water molecules ensure the connection between these layers via hydrogen bonds. It is shown that numerous (1D), (2D), e.g., [H-2(N2C9H20)](2)center dot[Zn-2(HPO4)(3)(H2PO4)(2)]center dot H2O, and (3D) (ZnPO) result from the condensation of the [Zn(H2PO4)(4)](2-) clusters. (c) 2005 Elsevier Inc. All rights reserved. |
| C1 | Fac Sci Bizerte, Dept Chim, UP12 30, Unite Rech 99, Jarzouna 7021, Tunisia. Univ Maine, Fac Sci & Tech, CNRS, UMR 6010,Lab Oxydes & Fluorures, F-72085 Le Mans, France. |
| RP | Smiri, LS, Fac Sci Bizerte, Dept Chim, UP12 30, Unite Rech 99, Jarzouna 7021, Tunisia. |
| EM | leila.smiri@fsb.rnu.tn |
| TC | 0 |
| PD | JUN |
| PY | 2005 |
| VL | 178 |
| IS | 6 |
| BP | 1880 |
| EP | 1887 |
| UT | ISI:000229753200018 |
| ER |
| PT | J |
| AU | Pham, QN Vijayakumar, M Bohnke, C Bohnke, O |
| TI | Synthesis and electrical characterization of Li0.30Ca0.35TaO3 perovskite synthesized via a polymerized complex route |
| SO | JOURNAL OF SOLID STATE CHEMISTRY |
| AB | The synthesis of Li0.30Ca0.35TaO3 perovskite by a Pechini-type polymerizable precursor method is carefully described. The thermal decomposition of the precursor and the formation of a pure perovskite phase were investigated by means of differential thermal analysis-thermogravimetric analysis (DTA-TGA) and XRD techniques. A pure and well-crystallized phase has been obtained at a lower temperature and with a much shorter synthesis time than the phase obtained by conventional solid-state reaction method. The morphology of the powder after heating at 1300 degrees C was observed by laser granulometry, Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). Impedance spectroscopy data allowed us to determine the electrical properties, i.e., permittivity and dc-conductivity, of the bulk and grain boundaries. The results are discussed on the assumption of the brick layer model. (c) 2005 Elsevier Inc. All rights reserved. |
| C1 | Univ Maine, CNRS, FR 2575, Inst Rech & Ingn Mol & Mat Fonctionnels,Lab Oxyde, F-72085 Le Mans, France. |
| RP | Bohnke, O, Univ Maine, CNRS, FR 2575, Inst Rech & Ingn Mol & Mat Fonctionnels,Lab Oxyde, Ave O Messiaen, F-72085 Le Mans, France. |
| EM | odile.bohnke@univ-lemans.fr |
| TC | 0 |
| PD | JUN |
| PY | 2005 |
| VL | 178 |
| IS | 6 |
| BP | 1915 |
| EP | 1924 |
| UT | ISI:000229753200022 |
| ER |
| PT | J |
| AU | Sayouty, EH Annouar, F Lassri, H Randrianantoandro, N Greneche, JM |
| TI | Effect of Tm substitution on the magnetic properties and local magnetic anisotropy of amorphous Fe80-xTmxB20 ribbons |
| SO | JOURNAL OF ALLOYS AND COMPOUNDS |
| AB | We have carried out magnetic and Mossbauer studies of amorphous Fe80-xTmxB20 alloys (0 <= x <= 16). With an increasing Tm content, both the Curie temperature T-C and the magnetic moment of Fe atom mu(Fe) decrease. We have extracted the value of exchange constant A from T-C and that of the local magnetic anisotropy constant K-L from the coercivity. Mossbauer studies were performed in a transmission geometry and also using the conversion electron spectroscopy. Both Mossbauer spectrometry techniques show that the average hyperfine field decreases linearly with the addition of rare-earth. (c) 2005 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, Lab Phys Etat Condense, UMR 6087, CNRS, F-72017 Le Mans, France. Univ Hassan II, Nucl Phys Lab, Fac Sci Ain Chock, Casablanca, Morocco. Univ Hassan II, Lab Phys Mat & Micro Electron, Fac Sci Ain Chock, Casablanca, Morocco. |
| RP | Greneche, JM, Univ Maine, Lab Phys Etat Condense, UMR 6087, CNRS, F-72017 Le Mans, France. |
| EM | greneche@univ-lemans.fr |
| TC | 0 |
| PD | JUL 19 |
| PY | 2005 |
| VL | 397 |
| IS | 1-2 |
| BP | 47 |
| EP | 51 |
| UT | ISI:000230067900011 |
| ER |
| PT | J |
| AU | Blazquez, JS Conde, CF Conde, A Greneche, JM |
| TI | Effects of the heating rate on the microstructure and the thermal stability of Fe-Co-Nb-B-(Cu) nanocrystalline alloys |
| SO | JOURNAL OF ALLOYS AND COMPOUNDS |
| AB | The size of the crystalline nanograins and the thermal stability of nanocrystalline Fe-Co-Nb-B-(Cu) alloys decrease as the heating rate at which the nanocrystalline microstructure is developed increases. Mossbauer experiments performed at room and high temperatures (473 and 673 K) show no differences in the crystalline contribution of samples prepared at different heating rates, although a slight decrease of the average hyperfine fields assigned to the interface contribution is detected for samples nanocrystallized at a higher heating rate. (c) 2005 Elsevier B.V. All rights reserved. |
| C1 | Univ Sevilla, CSIC, Inst Ciencia Mat, Dept Fis Mat Condensada, Seville 41080, Spain. Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. |
| RP | Greneche, JM, Univ Sevilla, CSIC, Inst Ciencia Mat, Dept Fis Mat Condensada, Apdo 1065, Seville 41080, Spain. |
| EM | greneche@univ-lemans.fr |
| TC | 0 |
| PD | JUL 19 |
| PY | 2005 |
| VL | 397 |
| IS | 1-2 |
| BP | 173 |
| EP | 178 |
| UT | ISI:000230067900033 |
| ER |
| PT | J |
| AU | Beveridge, AC Wang, S Gusev, VE Diebold, GJ |
| TI | The theory of ultrasonic vibration potential imaging |
| SO | JOURNAL DE PHYSIQUE IV |
| AB | The ultrasonic vibraton potential refers to the production of a time varying voltage when ultrasound passes through a colloidal or ionic solution. The vibration potential can be used as an imaging method for soft tissue by recording its phase, time of arrival, and magnitude relative to the launching of a burst of ultrasound. A theory of the effect can be found from Maxwell's equations. Experimental results demonstrating the imaging method are shown for bodies with simple geometries. |
| C1 | Brown Univ, Dept Chem, Providence, RI 02912 USA. Univ Maine, F-72085 Le Mans, France. |
| RP | Beveridge, AC, Brown Univ, Dept Chem, Providence, RI 02912 USA. |
| TC | 0 |
| PD | JUN |
| PY | 2005 |
| VL | 125 |
| BP | 69 |
| EP | 72 |
| UT | ISI:000230014700018 |
| ER |
| PT | J |
| AU | Pezeril, T Mounier, D Gusev, V Gougeon, S Ruello, P Chigarev, N Picart, P Breteau, JM |
| TI | Theory of in-plane motion induced by laser action on crystal surface |
| SO | JOURNAL DE PHYSIQUE IV |
| AB | Interaction of ultrashort laser pulses with subsurface region of the material leads to the excitation of acoustic waves initially propagating both in the direction from the surface and in the direction to the surface. Even if the acoustic waves inially propagating in the direction from the surface do not return to the surface in form of an echo (because of their absorption) there is still an opportunity to get information on the optoacoustic transformation by detecting the motion of the crystal surface caused by the waves initially propagating towards the surface. This monitoring of the surface motion should be accomplished immediately following the laser action. |
| C1 | Univ Maine, F-72085 Le Mans, France. |
| RP | Pezeril, T, Univ Maine, F-72085 Le Mans, France. |
| TC | 0 |
| PD | JUN |
| PY | 2005 |
| VL | 125 |
| BP | 335 |
| EP | 337 |
| UT | ISI:000230014700080 |
| ER |
| PT | J |
| AU | Fournier, D Romagne, ML Pascual, S Montembault, W Fontaine, L |
| TI | 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as ligand for atom transfer radical polymerization (ATRP) |
| SO | EUROPEAN POLYMER JOURNAL |
| AB | I,S-Diazabicyclo[5.4.0]undec-7-ene (DBU) has been used as a bidentate ligand of copper (1) bromide for the ATRP of (meth)acrylates and styrene. With methyl methacrylate, the polymerization reached high conversions producing polymers with a good control of Mn and low polydispersity indexes (PDI = 1.19). Higher PD1 were obtained with polystyrenes and poly(methyl acrylate)s. These results have been correlated to the redox properties of the catalytic complex. (c) 2005 Elsevier Ltd. All rights reserved. |
| C1 | Univ Maine, LCOM, UCO2M, UMR 6011,CNRS, F-72085 Le Mans, France. |
| RP | Fontaine, L, Univ Maine, LCOM, UCO2M, UMR 6011,CNRS, Ave O Messiaen, F-72085 Le Mans, France. |
| EM | sagrario.pascual@univ-lemans.fr laurent.fontaine@univ-lemans.fr |
| TC | 0 |
| PD | JUL |
| PY | 2005 |
| VL | 41 |
| IS | 7 |
| BP | 1576 |
| EP | 1581 |
| UT | ISI:000230071000015 |
| ER |
| PT | J |
| AU | Wang, QA |
| TI | Non-quantum uncertainty relations of stochastic dynamics |
| SO | CHAOS SOLITONS & FRACTALS |
| AB | First we describe briefly an information-action method for the study of stochastic dynamics of Hamiltonian systems perturbed by thermal noise and chaotic instability. It is shown that, for the ensemble of possible paths between two configuration points, the action principle acquires a statistical form <delta A > = 0. The main objective of this paper is to prove that, via this information-action description, some quantum like uncertainty relations such as <Delta A > >= (1)/root(2 eta) for action, Ax) AP) >_ for position and momentum, and (AH) At for Hamiltonian and time, can arise for sto-> stochastic dynamics of classical Hamiltonian systems. A corresponding commutation relation can also be found. These relations describe, through action or its conjugate variables, the fluctuation of stochastic dynamics due to random perturbation characterized by the parameter eta. (c) 2005 Published by Elsevier Ltd. |
| C1 | Inst Super Mat & Mecan Avances, F-72000 Le Mans, France. |
| RP | Wang, QA, Inst Super Mat & Mecan Avances, 44 Ave FA Bartholdi, F-72000 Le Mans, France. |
| EM | awang@ismans.univ-lemans.fr |
| TC | 0 |
| PD | NOV |
| PY | 2005 |
| VL | 26 |
| IS | 4 |
| BP | 1045 |
| EP | 1052 |
| UT | ISI:000229874400003 |
| ER |
| PT | J |
| AU | Krakowski, I Theobald, I Fabre, N Delorme, T Binhas, M Collin, E Duclos, R Jaulmes, D Luu, M Rostaing-Rigattieri, S Rousselot, H Torlotin, G Willemin, N Balp, L Chvetzoff, G de Beauchene, M Geoffrois, L Lakdja, F Marec-Berard, P Minello, C Ricard, C Richard, B |
| TI | Full version of the 2005 Standards, Options and Recommendations for the management of procedure-related pain (lumbar puncture, bone marrow aspiration or biopsy, blood sampling) in adult patients with cancer |
| SO | BULLETIN DU CANCER |
| AB | Context. The "Standards, Options and Recommendations" (SOR) project, started in 1993, is a collaboration between the Federation of French Cancer Centres (FNCLCC), the 20 French cancer centres, and specialists from French public universities, general hospitals and private clinics. The main objective is the development of clinical practice guidelines to improve the quality of health care and the outcome of cancer patients. The methodology is based on a literature review and with feedback from critical appraisal by a multidisciplinary group of experts, w specialists in cancer care delivery. Objectives : To establish the Standards, Options and Recommendations clinical practice guidelines for the management of procedure related pain (lumbar puncture, bone marrow aspiration or biopsy, blood sampling) in adult oncology patients. To define, on the basis of the critical appraisal of the best available evidence and expert agreement, the clinical situations in which a pain Q preventive strategy should be implemented. Methods. Medline((R)) was searched using specific search strategies from January 1966 to August 2003. Literature monitoring was performed to identify controlled clinical trials published between August 2003 to September 2004. In addition several Internet sites were searched in July 2003. Results. A total of 12 references, corresponding to 10 randomised clinical were identified. Clinical guidelines have been defined for each invasive trials, procedure. |
| C1 | Ctr Alexis Vautrin, Vandoeuvre Les Nancy, France. Ctr Paul Strauss, Strasbourg, France. FNCLCC, Paris, France. Inst Curie, Paris, France. Hop Henri Mondor, F-94010 Creteil, France. Hop La Pitie Salpetriere, Paris, France. CHG, Le Mans, France. Hop St Antoine, F-75571 Paris, France. Hop Avicenne, F-93009 Bobigny, France. Ctr Hosp Parc, Sarreguemines, France. Ctr Hosp, Mulhouse, France. CHG Pavillon Ferte, Lons Le Saunier, France. Ctr Leon Berard, F-69373 Lyon, France. Ctr Hosp, Poissy, France. Inst Bergonie, Bordeaux, France. Ctr GF Leclerc, Dijon, France. CHU Hosp Lapeyronie, Montpellier, France. CHU Caremeau, Nimes, France. CHU Hop Brabois, Vandoeuvre Les Nancy, France. |
| RP | Theobald, I, Ctr Alexis Vautrin, Vandoeuvre Les Nancy, France. |
| TC | 0 |
| PD | MAY |
| PY | 2005 |
| VL | 92 |
| IS | 5 |
| BP | 465 |
| EP | 488 |
| UT | ISI:000229817900014 |
| ER |
| PT | J |
| AU | Panouille, M Benyahia, L Durand, D Nicolai, T |
| TI | Dynamic mechanical properties of suspensions of micellar casein particles |
| SO | JOURNAL OF COLLOID AND INTERFACE SCIENCE |
| AB | Small micellar casein particles, so-called submicelles, were obtained by removing colloidal calcium phosphate from native casein by adding sodium polyphosphate. Aqueous submicelle suspensions were characterized using light scattering and rheology as a function of concentration and temperature. The casein submicelles behave like soft spheres that jam at a critical concentration (C-c) of about 100 g L-1. The viscosity does not diverge at C-c, but increases sharply, similarly to that of multiarm star polymers. C-c increases weakly with increasing temperature, which leads to a strong decrease of the viscosity close to and above C-c. Concentrated submicelle suspensions show strong shear-thinning above a critical shear rate and the shear stress becomes independent of the shear rate. The critical shear rates at different temperatures and concentrations are inversely proportional to the zero-shear viscosity. At much higher shear rates, the shear stress fluctuates strongly in time indicating inhomogeneous flow. The frequency dependence of casein submicelle suspensions is characterized by elastic behavior at high frequencies (concentrations) and viscous behavior at low frequencies (concentrations). (c) 2005 Elsevier Inc. All rights reserved. |
| C1 | Univ Maine, CNRS, UMR, F-72085 Le Mans, France. |
| RP | Nicolai, T, Univ Maine, CNRS, UMR, F-72085 Le Mans, France. |
| EM | dominique.durand@univ-lemans.fr taco.nicolai@univ-lemans.fr |
| TC | 0 |
| PD | JUL 15 |
| PY | 2005 |
| VL | 287 |
| IS | 2 |
| BP | 468 |
| EP | 475 |
| UT | ISI:000229751300013 |
| ER |
| PT | J |
| AU | Martinot, M Sordet, C Soubrier, M Puechal, X Saraux, A Liote, F Guggenbuhl, P Legre, V Jaulhac, B Maillefert, JF Zeisel, M Coumaros, G Sibilia, J |
| TI | Diagnostic value of serum and synovial procalcitonin in acute arthritis: a prospective study of 42 patients |
| SO | CLINICAL AND EXPERIMENTAL RHEUMATOLOGY |
| AB | Objective To determine the diagnostic value of serum and synovial
procalcitonin (PCT)for bacterial arthritis and to determine the
cellular origin of synovial PCT. Methods A prospective study enrolled 42 patients with acute arthritis including 11 bacterial arthritis, 18 rheumatoid arthritis and 13 crystal induced arthritis. Diagnostic values of serum and synovial PCT levels were determined by a immunoluminometric assay (Linnitest (R) PCT) and compared to those of classical inflammatory markers (C-reactive protein, erythrocyte sedimentation rate synovial fluid cellularity and both serum and synovial IL-6 and TNF alpha). Using fibroblast-like synoviocyte (FLS) cultures derived from rheumatoid arthritis (n = 4) and osteo-arthritis (n = 3) synovium with or without stimulation by lipopolysaccharid or recombinant streptococcal protein I/II, we attempted to determine whether synovial cells could be a source of PCT. Results Serum PCT was the best parameter to distinguish patients with acute bacterial arthritis from patients with crystal induced arthritis or rheumatoid arthritis. Insetting of an acute arthritis serum PCT (> 0.5 ng/mL) achieved 55% sensitivity and 94% specificity for the diagnosis of bacterial arthritis, while CRP (> 50 mg/L) had 100% sensitivity but poor specificity (40%). Serum PCT appeared to be higher in patients with septic arthritis resulting from "systemic infection" than in cases resulting from direct inoculation. Synovial PCT was not useful to discriminate between infectious and non infectious arthritis in clinical practice. PCT could not be detected at significant levels in the conditioned medium from fibroblast-like synoviocyte cultures. Conclusion Serum PCT is a poorly sensitive but specific marker of bacterial arthritis. Use of serum PCT in association with CRP could nevertheless be useful in an emergency situation for the diagnosis of bacterial arthritis. |
| C1 | Hop Louis Pasteur, Serv Med Interne & Rhumatol, Colmar, France. Hop Univ Strasbourgh, Serv Pathol Infect & Trop Med A, Strasbourg, France. Hop Univ Strasbourgh, Inst Bacteriol, Fac Med, Strasbourg, France. Univ Strasbourg 1, EA, Strasbourg, France. Hop Univ Strasbourgh, Lab Chim Biol & Med, Strasbourg, France. Reseau Rhumato Study Grp France, Le Mans, France. Reseau Rhumato Study Grp France, Clermont Ferrand, France. Reseau Rhumato Study Grp France, Brest, France. Reseau Rhumato Study Grp France, Dijon, France. Reseau Rhumato Study Grp France, Marseille, France. Reseau Rhumato Study Grp France, Paris, France. Reseau Rhumato Study Grp France, Reims, France. Reseau Rhumato Study Grp France, Rennes, France. Reseau Rhumato Study Grp France, Strasbourg, France. |
| RP | Martinot, M, Hop Hautepierre, Serv Rhumatol, 1 Ave Moliere 1, F-67098 Strasbourg, France. |
| TC | 0 |
| PD | MAY-JUN |
| PY | 2005 |
| VL | 23 |
| IS | 3 |
| BP | 303 |
| EP | 310 |
| UT | ISI:000229767400007 |
| ER |
| PT | J |
| AU | Gusev, V |
| TI | Revised theory for the interaction of the counter-propagating acoustic waves in materials with hysteresis of nonlinearity |
| SO | WAVE MOTION |
| AB | The theory of counter-propagating waves interactions in materials with hysteresis in quadratic nonlinearity is revised by proper accounting for a possible amplitude grating formation. The theory predicts that any strong pump acoustic field induces absorption and diminishing of the velocity for a weak probe wave. The theory describes how these nonlinear effects depend on the ratio of the probe and the pump frequencies. (c) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, Ecole Natl Super Ingenieurs Mans, Fac Sci, Lab Phys Etat Condense,CNRS,UMR 6087, F-72085 Le Mans, France. |
| RP | Gusev, V, Univ Maine, Ecole Natl Super Ingenieurs Mans, Fac Sci, Lab Phys Etat Condense,CNRS,UMR 6087, F-72085 Le Mans, France. |
| EM | vitali.goussev@univ-lemans.fr |
| TC | 0 |
| PD | AUG |
| PY | 2005 |
| VL | 42 |
| IS | 2 |
| BP | 97 |
| EP | 108 |
| UT | ISI:000229739400001 |
| ER |
| PT | J |
| AU | Danappe, S Pal, A Alexandre, C Aubertin, AM Bourgougnon, N Huet, F |
| TI | Synthesis of new nucleoside analogues comprising a methylenecyclobutane unit |
| SO | TETRAHEDRON |
| AB | Synthesis of eight nucleoside analogues 3-10 with a methylene cyclobutane unit is described. Wittig or Peterson reactions with protected 2-hydroxycyclobutanones 12 and 13 gave E- and Z-derivatives, respectively. After functional modifications the heterocyclic moieties were introduced via a Mitsunobu reaction either on the lateral chain or on the cycle. When adenine was used in this reaction only the N-9 substitution products were obtained. Removal of the protecting groups provided the target products. (c) 2005 Elsevier Ltd. All rights reserved. |
| C1 | Univ Maine, Fac Sci, Organ Synth Lab, UMR 6011,CNRS, F-72085 Le Mans, France. St Louis Univ, Fac Med, INSERM, Inst Virol,U 544, F-67000 Strasbourg, France. Ctr Rech Enseignement Yves Coppens, Lab Biol & Chim Mol, F-56017 Vannes, France. |
| RP | Alexandre, C, Univ Maine, Fac Sci, Organ Synth Lab, UMR 6011,CNRS, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | calexan@univ-lenians.fr fhuet@univ-lemans.fr |
| TC | 0 |
| PD | JUN 13 |
| PY | 2005 |
| VL | 61 |
| IS | 24 |
| BP | 5782 |
| EP | 5787 |
| UT | ISI:000229671600009 |
| ER |
| PT | J |
| AU | Ruello, P Perrin, B Pezeril, T Gusev, VE Gougeon, S Chigarev, N Laffez, P Picart, P Mounier, D Breteau, JM |
| TI | Optoacoustical spectrum of the metal-insulator transition compound NdNiO3: Sub-picosecond pump-probe study |
| SO | PHYSICA B-CONDENSED MATTER |
| AB | A pump-probe optical spectroscopy technique was used to study the time-resolved reflectivity Delta R(t)/R in the range 0-160ps of the metal-insulator transition compound NdNiO3. It enables, for the first time, the direct real-time observation of the non-equilibrium electron dynamics in the insulating and in the metallic state of that compound and the acoustical response. Strong change of the transient reflectivity is observed as a function of temperature. First of all, the magnitude of the fast component of transient reflectivity ({Delta R(t)/R}(max), 0-3 ps) increases drastically when T < T-MI. Moreover, the relaxation time of the fast-component increases when the insulating state is reached. Vanishing of the acoustic echo magnitude with decreasing temperature is also reported. All these singular properties could be connected to the gap opening mechanism below MIT. (c) 2005 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. Univ Paris 06, CNRS, UMR 7603, Lab Milieux Desordonnes & Heterogenes, F-75252 Paris, France. Univ Maine, CNRS, UMR 6613, Acoust Lab, F-72085 Le Mans, France. |
| RP | Ruello, P, Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, Av O Messaien, F-72085 Le Mans, France. |
| EM | pascal.ruello@univ-lemans.fr |
| TC | 0 |
| PD | JUN 15 |
| PY | 2005 |
| VL | 363 |
| IS | 1-4 |
| BP | 43 |
| EP | 54 |
| UT | ISI:000229654700007 |
| ER |
| PT | J |
| AU | Teyssandier, B Pagneux, V Simon, L Depollier, C |
| TI | Phase-space analysis of acoustics fields and its application to waveguide |
| SO | JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA |
| AB | A description of two-dimensional acoustic fields by means of a joint "space-wave number" representation is discussed. A function defined in the phase-space domain (x,y,k(x),k(y)) is associated with a signal which is a function of spatial coordinates (x,y). This paper presents two methods to realize it. The first is to associate with each point (x,y) of the wave field a two-dimensional wave number spectrum (k(x),k(y)), called local spectrum. The second is to process by other coordinates the wave field along an arbitrary direction, introduced in quantum mechanics for the study of classical billiards, and provided by the Birkhoff variables (s, cos phi). Phase-space diagrams are given by quadratic phase-space distributions. Simulations are presented for wave fields in a 2D planar waveguide for a pedagogical point of view with Gaussian beam or point-source excitation, and nonuniform waveguides as a sudden area expansion chamber and an open billiard with a single incoming mode at the entrance of each of them. In these problems, local spectrum and Birkhoff analysis are used in order to identify the structures hidden in the field. The result is the contribution of different wave vectors which contribute to the field value at the analysis point or at a certain section of the boundary, and show complicated structure of the acoustic field like whispering gallery or diffracted waves. (c) 2005 Acoustical Society of America. |
| C1 | Univ Maine, CNRS, UMR 6613, Acoust Lab, F-72085 Le Mans, France. |
| RP | Teyssandier, B, Univ Maine, CNRS, UMR 6613, Acoust Lab, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| TC | 0 |
| PD | JUN |
| PY | 2005 |
| VL | 117 |
| IS | 6 |
| BP | 3478 |
| EP | 3488 |
| UT | ISI:000229718500019 |
| ER |
| PT | J |
| AU | Joly, P Benichou, J Lok, C Hellot, MF Saiag, P Tancrede-Bohin, E Sassolas, B Labeille, B Doutre, MS Gorin, I Pauwels, C Chosidow, O Caux, F Esteve, E Dutronc, Y Sigal, M Prost, C Maillard, H Guillaume, JC Roujeau, JC |
| TI | Prediction of survival for patients with bullous pemphigoid - A prospective study |
| SO | ARCHIVES OF DERMATOLOGY |
| AB | Objective: To identify the prognostic factors of bullous pemphigoid
(BP). Design: Prospective study of patients with BP included in a randomized, controlled trial. Setting: Twenty dermatology departments in France. Patients: One hundred seventy patients with BP initially treated with a 40-g/d dosage of clobetasol propionate cream (testing sample) and 171 patients initially treated with oral corticosteroids at a dosage of 0.5 or of 1.0 mg/kg per day, depending on the extent of BP (validation samples). Main Outcome Measures: The end point was overall survival during the first year after BP diagnosis. From the testing sample, associations of clinical and biological variables with overall survival were assessed using univariate and multivariate analyses. Selected predictors were included in a prognostic model. To verify that these predictors were not dependent on the treatment used, the model was then validated independently on the 2 series of BP patients treated with oral corticosteroids. Results: Median age of the BP patients included in the testing sample was 83 years. The 1-year Kaplan-Meier survival rate was 74%. From univariate analysis, the main deleterious predictors were demographic factors (ie, older age and female sex), associated medical conditions (ie, cardiac insufficiency, history of stroke, and dementia), and low Karnofsky score, which is a measure of the patient's general condition. No factors directly related to BP, in particular extent of cutaneous lesions, were shown to be related to the patients' prognosis. From multivariate analysis, only older age (P=.02) and low Karnofsky score (P <.001) appeared independently predictive of death. From the Cox model including these 2 predictors, the predicted 1-year survival rates were 90% (95% confidence interval [CI], 85%-96%) for patients 83 years or younger with Karnofsky score greater than 40, 79% (95% CI, 69%-90%) for patients older than 83 years with Karnofsky score greater than 40, 65% (95% CI, 50%-86%) for patients 83 years or younger with Karnofsky score of 40 or less, and 38% (95% CI, 26%-57%) for patients older than 83 years with Karnofsky score of 40 or less. Kaplan-Meier survival distributions of patients from the validation samples appeared clearly separated according to these 4 categories and were in close agreement with corresponding predicted I-year survival rates obtained from the testing sample. Conclusions: The prognosis of patients with BP is influenced by age and Karnofsky score. These predictors are easy to use and should facilitate the management of BP. |
| C1 | Univ Rouen, Dept Dermatol, INSERM U519, Rouen, France. Univ Rouen, Dept Biostat, INSERM U519, Rouen, France. Univ Amiens, Dept Dermatol, Amiens, France. Univ Paris Ouest, Paris, France. Univ Paris 10, Paris, France. Univ Paris 05, Paris, France. Univ Paris 13, Paris, France. Unvi Paris St Louis, Paris, France. Univ Paris 12, Paris, France. Unvi Brest, Dept Dermatol, Brest, France. Gen Hosp Valence, Dept Dermatol, Valence, France. Univ Bordeaux, Dept Dermatol, Bordeaux, France. Univ St Germain, Dept Dermatol, St Germain En Laye, France. Gen Hosp Orleans, Dept Dermatol, Orleans, France. Univ Dijon, Dept Dermatol, F-21004 Dijon, France. Gen Hosp Argenteuil, Dept Dermatol, Argenteuil, France. Gen Hosp Le Mans, Dept Dermatol, Le Mans, France. Gen Hosp, Dept Dermatol, Colmar, France. |
| RP | Joly, P, Hop Charles Nicolle, Dermatol Clin, 1 Rue Germont, F-76031 Rouen, France. |
| EM | Pascal.Joly@chu.rouen.fr |
| TC | 0 |
| PD | JUN |
| PY | 2005 |
| VL | 141 |
| IS | 6 |
| BP | 691 |
| EP | 698 |
| UT | ISI:000229628800004 |
| ER |
| PT | J |
| AU | Ponpandian, N Narayanasamy, A Chinnasamy, CN Sivakumar, N Greneche, JM Chattopadhyay, K Shinoda, K Jeyadevan, B Tohji, K |
| TI | Neel temperature enhancement in nanostructured nickel zinc ferrite |
| SO | APPLIED PHYSICS LETTERS |
| AB | The Neel temperature of Ni0.5Zn0.5Fe2O4 spinel ferrite increases significantly from 538 K in the bulk state to 592 K when the grain size is reduced to 16 nm by milling in a high-energy ball mill. This has been attributed to an increase in the AB superexchange interaction strength due to a possible enhancement in the magnetic ion concentration in the A-site on milling, as is evident from extended x-ray absorption fine structure and in-field Mossbauer measurements. (c) 2005 American Institute of Physics. |
| C1 | Univ Madras, Ctr Mat Sci, Dept Phys Nucl, Madras 600025, Tamil Nadu, India. Univ Maine, Fac Sci, CNRS, UMR 6087,Lab Phys Etat Condense, F-72085 Le Mans, France. Indian Inst Sci, Dept Met, Bangalore 560012, Karnataka, India. Tohoku Univ, Grad Sch Environm Studies, Sendai, Miyagi 9808579, Japan. |
| RP | Ponpandian, N, Univ Madras, Ctr Mat Sci, Dept Phys Nucl, Guindy Campus, Madras 600025, Tamil Nadu, India. |
| EM | ansuom@yahoo.co.in |
| TC | 0 |
| PD | MAY 9 |
| PY | 2005 |
| VL | 86 |
| IS | 19 |
| AR | 192510 |
| UT | ISI:000229397900058 |
| ER |
| PT | J |
| AU | Dutriaux, C Maillard, H Prophette, B Catala, M Celerier, P |
| TI | Spontaneous cholecystocutaneous fistula |
| SO | ANNALES DE DERMATOLOGIE ET DE VENEREOLOGIE |
| AB | Introduction. Spontaneous cholecystocutaneous fistula is now a rare
entity due to the advent of antibiotics, ultrasonography, and safe and
here, revealed by the systematic histological examination of the skin
biopsy. Observation. A 65 year-old male presented with an inflammatory and ulcerated lesion located on his right flank, with a long-standing but asymptomatic course. Biological tests and biliary tract ultrasonography were not very contributive. Histopathological findings consisted in a granulomatous dermal reaction enclosing biliary fragments. Peroperative data were in favour of a compound biliocutaneous fistula complicating an inflammatory process of the gall-bladder. Discussion. Spontaneous cholecystocutaneous fistula is unusual. Diagnosis might be difficult because of the lack of clinical specificity and a occasionally insidious evolution. Consequently, systemic histological examination is fundamental. |
| C1 | Ctr Hosp Gen, Dermatol Serv, Le Mans, France. Ctr Hosp Gen, Lab Anat Pathol, Le Mans, France. Ctr Hosp Gen, Serv Chirurg Gen, Le Mans, France. |
| RP | Dutriaux, C, CHU Angers, Lab Anatomopathol, 4,Rue Larrey, F-49033 Angers, France. |
| EM | carodutriaux@hotmail.com |
| TC | 0 |
| PD | MAY |
| PY | 2005 |
| VL | 132 |
| IS | 5 |
| BP | 467 |
| EP | 469 |
| UT | ISI:000229539500010 |
| ER |
| PT | J |
| AU | Crosnier-Lopez, MP Fourquet, JL |
| TI | Stacking faults in protonated layered perovskite phases: DIFFaX simulation studies on H2SrTa2O7 |
| SO | SOLID STATE SCIENCES |
| AB | H(2)A(0.5n)B(n)O(3n+1) (A = Ca, Sr; B = Nb, Ta) layered perovskite phases have been prepared by ionic exchange from the Li(2)A(0.5n)B(n)O(3n+1) parent compounds. Their dehydration, via a first step producing a metastable 3D perovskite phase without ordering of A cations and vacancies, leads finally to the well-known A(0.5)BO(3) stable phases. In the special case of H2SrTa2O7, before the first step of its dehydration, two reversible transitions are observed at 116 and 280 degrees C, occuring between its three alpha, beta and gamma forms respectively. They are related to special shifts between adjacent perovskite layers, linked by hydrogen bonds. If the crystal structure at 300 degrees C of the gamma form is well established (I4/mmm, Z = 2, a = 3.930 angstrom, c = 18.515 angstrom) and very similar to that presented by its parent compound Li2SrTa2O7, the structures of the a and 6 forms reveal to be strongly disordered. If the double octahedra perovskite blocks are present in both cases, the X-ray diffraction patterns of the two compounds can be interpreted in terms of stacking faults occurring along a direction perpendicular to the layers. By using the DIFFaX code to simulate the X-Ray diffraction patterns, we propose for the at and 0 forms two different schemes of disordered shifts. of adjacent layers, based on simple translations vectors along the [110] direction of the parent perovskite cell. (c) 2005 Elsevier SAS. All rights reserved. |
| C1 | Univ Maine, Inst Rech Ingn Mol & Mat Fonct, CNRS,FR 2575, Lab Oxydes & Fluorures,CNRS,UMR 6010, F-72085 Le Mans, France. |
| RP | Fourquet, JL, Univ Maine, Inst Rech Ingn Mol & Mat Fonct, CNRS,FR 2575, Lab Oxydes & Fluorures,CNRS,UMR 6010, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | jean-louis.fourquet@univ-lemans.fr |
| TC | 0 |
| PD | MAY |
| PY | 2005 |
| VL | 7 |
| IS | 5 |
| BP | 530 |
| EP | 538 |
| UT | ISI:000229421600006 |
| ER |
| PT | J |
| AU | Corbel, G Mazza, D Bohnke, O Leblanc, M |
| TI | Bidimensional sodium ionic conduction of oxyborates Na2M2(BO3)(2)O (M = Al, Ga) and Na2-2xCaxGa2(BO3)(2)O (x=0.25, 0.50) |
| SO | SOLID STATE SCIENCES |
| AB | Crystalline samples of Na2M2(BO3)(2)O (M = Al, Ga), Na1.5Ca0.25Ga2(BO3)(2)O and NaCa0.5Ga2(BO3)(2)O are prepared by conventional high temperature solid state synthesis technique. Temperature dependent impedance spectroscopy measurements are performed. For Na2Al2(BO3)(2)O and Na2Ga2(BO3)(2)O, high and low temperature regimes have to be distinguished. Only one regime is observed for the calcium-substituted samples Na1.5Ca0.25Ga2(BO3)(2)O and NaCa0.5Ga2(BO3)(2)O. (c) 2005 Elsevier SAS. All rights reserved. |
| C1 | Univ Maine, Lab Oxydes & Fluorures, CNRS, UMR 6010, F-72085 Le Mans, France. Politecn Turin, Dipartimento Sci Mat & Ingn Chim, I-10129 Turin, Italy. |
| RP | Corbel, G, Univ Maine, Lab Oxydes & Fluorures, CNRS, UMR 6010, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | gwenael.corbel@univ-lemans.fr |
| TC | 0 |
| PD | MAY |
| PY | 2005 |
| VL | 7 |
| IS | 5 |
| BP | 588 |
| EP | 593 |
| UT | ISI:000229421600010 |
| ER |
| PT | J |
| AU | Nguyen, TH Chau, NTT Castanet, AS Nguyen, KPP Mortier, J |
| TI | Toward a better understanding on the mechanism of ortholithiation. Tuning of selectivities in the metalation of meta-anisic acid by an appropriate choice of base |
| SO | ORGANIC LETTERS |
| AB | [GRAPHICS] If employed in THF at 0&DEG; C, LTMP metalates meta-anisic acid at the doubly activated position. In contrast, n-BuLi/t-BuOK deprotonates position C-4 preferentially at low temperature. Functionalization at C-6 requires protection of the C-2 site beforehand. As a result of these findings, a new mechanism is proposed for the heteroatom-directed ortholithiation of aromatic compounds. |
| C1 | Univ Maine, Fac Sci, Unite Chim Organ Mol & Macromol, UMR 6011, F-72085 Le Mans, France. CNRS, F-72085 Le Mans, France. Univ Ho Chi Minh City, Ecole Sci Nat, Chim Organ Lab, Thanh Pho Ho Chi Minh, Vietnam. |
| RP | Nguyen, TH, Univ Maine, Fac Sci, Unite Chim Organ Mol & Macromol, UMR 6011, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | jacques.mortier@univ-lemans.fr |
| TC | 0 |
| PD | JUN 9 |
| PY | 2005 |
| VL | 7 |
| IS | 12 |
| BP | 2445 |
| EP | 2448 |
| UT | ISI:000229574300039 |
| ER |
| PT | J |
| AU | Solanky, SS Campistron, IN Laguerre, A Pilard, JF |
| TI | Metathetic selective degradation of polyisoprene: Low-molecular-weight telechelic oligomer obtained from both synthetic and natural rubber |
| SO | MACROMOLECULAR CHEMISTRY AND PHYSICS |
| AB | Degradation studies of cis-1,4-polyisoprene were carried out using first and second generation Grubbs catalysts to achieve end-functionalized acetoxy oligomers in both an organic solvent and a latex phase at room temperature. |
| C1 | Univ Maine, CNRS, UMR 6011, Lab Chim Organ Macromol Chim Polymeres, F-72085 Le Mans, France. |
| RP | Campistron, IN, Univ Maine, CNRS, UMR 6011, Lab Chim Organ Macromol Chim Polymeres, Ave O Messiaen, F-72085 Le Mans, France. |
| EM | irene.campistron@univ-lemans.fr jean-francois.pilard@univ-lemans.fr |
| TC | 0 |
| PD | MAY 19 |
| PY | 2005 |
| VL | 206 |
| IS | 10 |
| BP | 1057 |
| EP | 1063 |
| UT | ISI:000229572000008 |
| ER |
| PT | J |
| AU | Pezeril, T Gusev, V Mounier, D Chigarev, N Ruello, P |
| TI | Surface motion induced by laser action on opaque anisotropic crystals |
| SO | JOURNAL OF PHYSICS D-APPLIED PHYSICS |
| AB | Analytical solutions for the acoustic wave equations obtained by temporal Fourier and spatial Laplace transformations directly provide a description of the motion of the crystal Surface caused by the spatially distributed laser heating of a semi-infinite crystal. Evaluation of the acoustic field in the bulk of the material is not needed here. In general, all three acoustic modes are excited due to the laser-induced thermoelastic effect and contribute to each of the three components of the transient surface displacement. Numerical simulations of the surface displacement as a function of time and crystal surface orientation are performed with the use of the analytical formulae derived in the case of a hexagonal crystal, for which only two modes are excited. The formulae obtained make it possible to optimize the orientation of the surface of the crystal in order to improve the efficiency of the excitation of the in-plane motion of the surface. |
| C1 | Univ Maine, Lab Phys Etat Condense, F-72085 Le Mans, France. |
| RP | Pezeril, T, Univ Maine, Lab Phys Etat Condense, Av Olivier Messiaen, F-72085 Le Mans, France. |
| EM | thomas.pezeril@univ-lemans.fr |
| TC | 0 |
| PD | MAY 7 |
| PY | 2005 |
| VL | 38 |
| IS | 9 |
| BP | 1421 |
| EP | 1428 |
| UT | ISI:000229552500016 |
| ER |
| PT | J |
| AU | Plenat, C |
| TI | A solution to the Nash problem of arcs for rational double points D-n |
| SO | COMPTES RENDUS MATHEMATIQUE |
| AB | A solution to the Nash problem of arcs for rational double points D, This Note deals with the Nash problem, which claims that there are as many families of arcs on a singular germ Of surface U as there are essential components of the exceptional divisor in the desingularisation of this singularity. We prove that this claim holds for the rational double points D-n (11 &GE; 4). © 2005 Academie des sciences. public par Elsevier SAS. Tous droits reserves. |
| C1 | Fac Sci, Dept Math, F-72085 Le Mans, France. |
| RP | Plenat, C, Fac Sci, Dept Math, F-72085 Le Mans, France. |
| EM | camille.plenat@univ-lemans.fr |
| TC | 0 |
| PD | MAY 15 |
| PY | 2005 |
| VL | 340 |
| IS | 10 |
| BP | 747 |
| EP | 750 |
| UT | ISI:000229536900009 |
| ER |
| PT | J |
| AU | Marlin, S Feldmann, D Blons, H Loundon, N Rouillon, I Albert, S Chauvin, P Garabedian, EN Couderc, R Odent, S Joannard, A Schmerbrg, S Delobel, B Leman, J Journel, H Catros, H Lemarechal, C Dollfus, H Eliot, MM Delaunoy, JL David, A Calais, C Drouin-Garraud, V Obstoy, MF Goizet, C Duriez, F Fellmann, F Helias, J Vigneron, J Montaut, B Matin-Coignard, D Faivre, L Baumann, C Lewin, P Petit, C Denoyelle, F |
| TI | GJB2 and GJB6 mutations - Genotypic and phenotypic correlations in a large cohort of hearing-impaired patients |
| SO | ARCHIVES OF OTOLARYNGOLOGY-HEAD & NECK SURGERY |
| AB | objectives: To analyze the clinical features of hearing impairment and
to search for correlations with the genotype in patients with DFNB1. Design: Case series. Setting: Collaborative study in referral centers, institutional practice. Patients: A total of 256 hearing-impaired patients selected on the basis of the presence of biallelic mutations in GJB2 or the association of I GJB2 mutation with the GJB6 deletion (GJB6-D13S1830)del. Main Outcome Measures: The prevalence of GJB2 mutations and the GJB6 deletion and audiometric phenotypes related to the most frequent genotypes. Results: Twenty-nine different GJB2 mutations were identified. Allelic frequency of 35delG was 69%, and the other common mutations, 313del14, E47X, Q57X, and L90P, accounted for 2.6% to 2.9% of the variants. concerning GJB6, (GJB6-D13S1830)del accounted for 5% of all mutated alleles and was observed in 25 of 93 compound heterozygous patients. Three novel GJB2 mutations, 355del9, V95M, and 573delCA, were identified. Hearing impairment was frequently less severe in compound heterozygotes 35delG/L90P and 35delG/N206S than in 35delG homozygotes. Moderate or mild hearing impairment was more frequent in patients with I or 2 noninactivating mutations than in patients with 2 inactivating mutations. Of 93 patients, hearing loss was stable in 73, progressive in 21, and fluctuant in 2. Progressive hearing loss was more frequent in patients with I or 2 noninactivating mutations than in those with 2 inactivating mutations. In 49 families, hearing loss was compared between siblings with similar genotypes, and variability in terms of severity was found in 18 families (37%). Conclusion: Genotype may affect deafness severity, but environmental and other genetic factors may also modulate the severity and evolution of GJB2-GJB6 deafness. |
| C1 | Univ Paris 07, Hop Enfants Armand Trousseau, Serv ORL & Chirurg Cervico Faciale, Unite Gen Med,AP HP,INSERM U587, F-75012 Paris, France. Univ Paris 07, Hop Enfants Armand Trousseau, AP HP, Serv Biochem & Biol Mol, F-75012 Paris, France. Univ Paris 07, Unite Rech Epidemiol & Sci Informat, INSERM, Fac Med St Antoine,U707, F-75012 Paris, France. Hop Pontchaillou, Unite Genet, Rennes, France. CHU Grenoble, Serv Pediat, F-38043 Grenoble, France. CHU Grenoble, Serv ORL, F-38043 Grenoble, France. Hop St Antoine, Ctr Genet, Lille, France. Ctr Rochin, Lille, France. CHR, Unite Genet Med, Vannes, France. Ctr Gabriel Deshayes, Auray, France. CHU Brest, Lab Genet Mol & Histocompabilite, F-29285 Brest, France. Hop Hautepierre, Gen Med Serv, Strasbourg, France. Hop Hautepierre, Serv ORL, Strasbourg, France. Fac Med, Lab Diagnost Genet, Strasbourg, France. Hop Hotel Dieu, Serv Genet, Nantes, France. Hop Hotel Dieu, Serv ORL, Nantes, France. Hop Charles Nicolle, Serv Genet, Rouen, France. Hop Charles Nicolle, Serv ORL, Rouen, France. Hop Pellegrin, Unite Genet Med, F-33076 Bordeaux, France. Hop Pellegrin, Serv ORL, F-33076 Bordeaux, France. Hop St Jacques, Cytogenet Serv, F-25030 Besancon, France. Hop Jean Minjoz, Serv ORL, F-25030 Besancon, France. Hop Cent, Maternite Reg Adolphe Pinard, Nancy, France. Hop Cent, Serv ORL, Nancy, France. Hop Le Mans, Unite Genet Med, Le Mans, France. Hop Dijon, Unite Genet Med, Dijon, France. Hop Robert Debre, Dept Genet, F-75019 Paris, France. Lab Pasteur Cerba, Cergy Pontoise, France. Inst Pasteur, INSERM, Unite Genet Deficits Sensoriels, U587, F-75724 Paris, France. |
| RP | Denoyelle, F, Univ Paris 07, Hop Enfants Armand Trousseau, Serv ORL & Chirurg Cervico Faciale, Unite Gen Med,AP HP,INSERM U587, 26 Ave Dr Arnold Netter, F-75012 Paris, France. |
| EM | sandrine.marlin@trs.ap-hop-paris.fr f.denoyelle@trs.ap-hop-paris.fr |
| TC | 0 |
| PD | JUN |
| PY | 2005 |
| VL | 131 |
| IS | 6 |
| BP | 481 |
| EP | 487 |
| UT | ISI:000229548000002 |
| ER |
| PT | J |
| AU | Adil, K Marrot, J Leblanc, M Maisonneuve, V |
| TI | Diethylenetriaminium hexafluoroaluminate dihydrate |
| SO | ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE |
| AB | The title compound, (C4H16N3)[AlF6]center dot 2H(2)O, was obtained under solvothermal conditions at 463 K for 48 h, involving in situ generation of diethylenetriamine from tris(2-amino-ethyl) amine. The structure has been determined by single-crystal X-ray diffraction. The [AlF6](3-) anions and triprotonated amine cations build infinite layers, which are hydrogen-bonded to water molecules. |
| C1 | Univ Maine, Fac Sci & Tech, CNRS, Lab Oxydes & Fluores,UMR 6010, F-72085 Le Mans, France. Univ Versailles, CNRS, Inst Lavoisier, IREM,UMR 8637, F-75035 Versailles, France. |
| RP | Maisonneuve, V, Univ Maine, Fac Sci & Tech, CNRS, Lab Oxydes & Fluores,UMR 6010, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | vincent.maisonneuve@univ-lemans.fr |
| TC | 0 |
| PD | JUN |
| PY | 2005 |
| VL | 61 |
| PN | Part 6 |
| BP | M1178 |
| EP | M1180 |
| UT | ISI:000229464500077 |
| ER |
| PT | J |
| AU | Body, M Silly, G Legein, C Buzare, JY |
| TI | Cluster models and a initio calculations of F-19 NMR isotropic chemical shifts for inorganic fluorides |
| SO | JOURNAL OF PHYSICAL CHEMISTRY B |
| AB | F-19 NMR isotropic chemical shift (delta(iso)) calculations are performed in crystallized compounds using the GIAO method with the B3LYP hybrid functional at DFT level. Clusters centered on the studied fluorine atoms mimic the crystalline structures. The 6-311 + G(d) basis set is chosen for the central fluorine atom, and the LanL2DZ basis set for the others. The metal atoms are described by the 3-21G(2d) basis set or, when not available, by the CRENBL basis set with the corresponding ECP, and augmented with 2d polarization functions when existing. First, for high-symmetry systems (MF, MF2, and MF3 compounds), a systematization of the cluster building up from coordination spheres is proposed, generalized to fluoroperovskites and fluoroaluminates KAlF4 and RbAIF(4). When applied to rather low symmetry systems such as barium fluorometalates BaMgF4, BaZnF4, and Ba2ZnF6, the definition of the coordination spheres is far from easy. Then, for structures built up from a MF6 octahedron network, we may define different "starting clusters": [FM2F8] for the shared fluorine atoms, [FMF4] for the unshared ones, and [FBa4](7+) for the "free" ones. Analogous "starting clusters" are then tested on compounds from the NaF-AlF3, BaF2-AlF3, and CaF2-AlF3 binary systems and for alpha-BaCaAlF7 that are also built up from a MF6 Octahedron network. For each of these corresponding fluorine sites, delta(iso) values are calculated with the "starting clusters" and several larger clusters and compared to the experimental delta(iso) values. For the barium-containing clusters, the RMS deviation is equal to 51 ppm. It is suggested that this result may be related to the poor quality of the barium basis sets for which no polarization functions are available for the moment. In total, chemical shifts were calculated for 122 fluorine sites, in a various range of compounds. For the clusters without barium, the ab initio method leads to a RMS equal to 22 ppm, which is a quite nice result keeping in mind that the 19(F) chemical shift range is larger than 200 ppm. |
| C1 | Univ Maine, CNRS, FR 2575,Lab Phys Etat Condense, UMR 6087,Inst Rech Ingn Mol & Mat Fontionnels, F-72085 Le Mans, France. Univ Maine, CNRS, FR 2575,Lab Oxydes & Fluorures, UMR 6010,Inst Rech Ingn Mol & Mat Fonctionnels, F-72085 Le Mans, France. |
| RP | Body, M, Univ Maine, CNRS, FR 2575,Lab Phys Etat Condense, UMR 6087,Inst Rech Ingn Mol & Mat Fontionnels, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | monique.body.etu@univ-lemans.fr |
| TC | 0 |
| PD | MAY 26 |
| PY | 2005 |
| VL | 109 |
| IS | 20 |
| BP | 10270 |
| EP | 10278 |
| UT | ISI:000229296600055 |
| ER |
| PT | J |
| AU | Restrepo, J Greneche, JM Hernando, A Crespo, P Garcia, MA Palomares, FJ Gonzalez, JM |
| TI | Magnetic properties of ball milled Cu70Fe15Mn15 |
| SO | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS |
| AB | We report on the structural and magnetic properties of mechanically alloyed samples having (Fe50Mn50)(30)Cu-70 nominal composition. Our study included the evaluation of the milling time dependence of the average grain size and lattice parameter and that of the temperature dependences of the Mossbauer spectra, AC susceptibility, low field magnetization and coercivity. From the corresponding data we concluded about the presence of a canonical spin glass (CuMn), ferromagnetic (FeCuMn or FeCu) clusters and an antiferromagnetic FCC phase (gamma-Fe) in our inhomogeneous samples. (c) 2004 Elsevier B.V. All rights reserved. |
| C1 | IMA UCM, CSIC, Inst Ciencia Mat Madrid, Dept Propiedades Opt Magnet & Transporte,Unidad A, Madrid 28049, Spain. Univ Antioquia Medellin, Inst Fis, Grp Fis Estado Solido, Medellin 1226, Colombia. Univ Maine, Lab Phys Etat Condense, UMR 6087, CNRS, F-72085 Le Mans, France. IMA UCM, CSIC, Inst Ciencia Mat Madrid, Unidad Asociada, Madrid 28230, Spain. |
| RP | Gonzalez, JM, IMA UCM, CSIC, Inst Ciencia Mat Madrid, Dept Propiedades Opt Magnet & Transporte,Unidad A, Madrid 28049, Spain. |
| EM | jesus.m.gonzalez@icmm.csic.es |
| TC | 0 |
| PD | APR |
| PY | 2005 |
| VL | 290 |
| PN | Part 1 Sp. Iss. SI |
| BP | 602 |
| EP | 605 |
| UT | ISI:000228837600149 |
| ER |
| PT | J |
| AU | Boeckx, L Leclaire, P Khurana, P Glorieux, C Lauriks, W Allard, JF |
| TI | Guided elastic waves in porous materials saturated by air under Lamb conditions |
| SO | JOURNAL OF APPLIED PHYSICS |
| AB | The propagation of guided elastic waves in porous materials saturated by air under Lamb conditions is studied theoretically and experimentally. The modes are derived from expressing the boundary conditions on the normal and tangential stresses and the displacements at the interfaces between the porous layer and the surrounding fluid. The stresses and the fluid pressure inside the porous medium are obtained from Biot's equations of poroelasticity. Symmetrical and antisymmetrical modes are found when the porous layer is loaded by the same fluid on both sides. Damping mechanisms include viscous and thermal exchanges between the solid and the fluid, in addition to the classical structural damping. Using an experimental setup based on the generation of standing waves in the layer and taking the spatial Fourier transform of the displacement profile, the phase velocities of three modes were measured for two porous materials in a frequency range between 80 Hz and 4 kHz. The measurements confirm the theoretical predictions and provide information on the shear modulus of a sound-absorbing material in a wide frequency range. (C) 2005 American Institute of Physics. |
| C1 | Katholieke Univ Leuven, Lab Akoestiek Therm Fys, B-3001 Heverlee, Belgium. Univ Maine, Acoust Lab, CNRS, UMR 6613, F-72085 Le Mans, France. |
| RP | Lauriks, W, Katholieke Univ Leuven, Lab Akoestiek Therm Fys, Celestijnenlaan 200D, B-3001 Heverlee, Belgium. |
| EM | Walter.Lauriks@fys.kuleuven.ac.be |
| TC | 0 |
| PD | MAY 1 |
| PY | 2005 |
| VL | 97 |
| IS | 9 |
| AR | 094911 |
| UT | ISI:000229155600102 |
| ER |
| PT | J |
| AU | Hamadene, S Hassani, M |
| TI | BSDEs with two reflecting barriers: the general result |
| SO | PROBABILITY THEORY AND RELATED FIELDS |
| AB | In this paper we show the existence of a solution for the BSDE with two reflecting barriers when those latter are completely separated. Neither Mokobodzki's condition nor the regularity of the barriers are supposed. The main tool is the notion of local solution of reflected BSDEs. Applications related to Dynkin games and double obstacle variational inequality are given. |
| C1 | Univ Maine, Lab Stat & Proc, F-72085 Le Mans, France. |
| RP | Hamadene, S, Univ Maine, Lab Stat & Proc, F-72085 Le Mans, France. |
| EM | hamadene@univ-lemans.fr mohammed.hassani@univ-lemans.fr |
| TC | 0 |
| PD | JUN |
| PY | 2005 |
| VL | 132 |
| IS | 2 |
| BP | 237 |
| EP | 264 |
| UT | ISI:000228896600003 |
| ER |
| PT | J |
| AU | Puechal, X |
| TI | Incidence of vasculitis in rheumatoid arthritis: comment on the article by Turesson et al |
| SO | ARTHRITIS AND RHEUMATISM |
| C1 | Le Mans Gen Hosp, Le Mans, France. |
| RP | Puechal, X, Le Mans Gen Hosp, Le Mans, France. |
| TC | 0 |
| PD | MAY |
| PY | 2005 |
| VL | 52 |
| IS | 5 |
| BP | 1620 |
| EP | 1620 |
| UT | ISI:000229004600035 |
| ER |
| PT | J |
| AU | Pham, T Gossec, L Fautrel, B Combe, B Flipo, RM Goupille, P Le Loet, X Mariette, X Puechal, X Wendling, D Schaeverbeke, T Sibilia, J Sany, J Dougados, M |
| TI | Physical examination and laboratory tests in the management of patients with rheumatoid arthritis: development of recommendations for clinical practice based on published evidence and expert opinion |
| SO | JOINT BONE SPINE |
| AB | Objectives. - To develop recommendations for the physical and
laboratory-test follow-up of patients with rheumatoid arthritis (RA)
seen in everyday practice, using evidence from the literature,
supplemented with expert opinion when needed. Methods. - A scientific committee selected 7-10 questions using the Delphi consensus procedure. Evidence-based responses to each question were sought in the literature and were then used by a panel to develop recommendations. To fill in gaps in knowledge from the literature, the panelists relied on their personal opinion. Results. - The seven questions dealt with the physical and laboratory-test follow-up of RA and the factors predicting disease severity. The literature review identified 799 articles whose title and abstract suggested relevance to the study. Elimination of articles that provided no data on the study topic left 128 original articles. The panel developed seven recommendations, one for each question, which were accepted by consensus. Conclusion. - Recommendations about the physical and laboratory-test follow-up of patients with RA seen in everyday practice were developed. Because they constitute an objective foundation built by consensus among experts, should improve the uniformity and quality of care provided to RA patients in everyday practice. (c) 2005 Elsevier SAS. All rights reserved. |
| C1 | Hop Cochin, Serv Rhumatol B, F-75014 Paris, France. CHU Conception, Serv Rhumatol, Marseille, France. Grp Hosp Pitie Salpetriere, Serv Rhumatol, F-75634 Paris, France. CHU Lapeyronie, Serv Immunorhumatol, Montpellier, France. CHRU Roger Salengro, Serv Rhumatol, Lille, France. CHU Tours, Serv Rhumatol, Tours, France. CHU Rouen, Serv Rhumatol, Bois Guillaume, France. Hop Bicetre, Serv Rhumatol, Le Kremlin Bicetre, France. Ctr Hosp, Serv Rhumatol, Le Mans, France. CHU Jean Minjoz, Serv Rhumatol, Besancon, France. CHU Pellegrin, Serv Rhumatol, Bordeaux, France. CHU Hautepierre, Serv Rhumatol, F-67098 Strasbourg, France. |
| RP | Dougados, M, Hop Cochin, Serv Rhumatol B, 27,Rue Faubourg St Jacques, F-75014 Paris, France. |
| EM | maxime.dougados@cch.ap-hop-paris.fr |
| TC | 0 |
| PD | MAY |
| PY | 2005 |
| VL | 72 |
| IS | 3 |
| BP | 222 |
| EP | 228 |
| UT | ISI:000228879100007 |
| ER |
| PT | J |
| AU | Gossec, L Fautrel, B Pham, T Combe, B Flipo, RM Goupille, P Le Loet, X Mariette, X Puechal, X Wendling, D Schaeverbeke, T Sibilia, J Sany, J Dougados, M |
| TI | Structural evaluation in the management of patients with rheumatoid arthritis: development of recommendations for clinical practice based on published evidence and expert opinion |
| SO | JOINT BONE SPINE |
| AB | Objectives. - To develop French evidence-based recommendations for the
structural evaluation of rheumatoid arthritis (RA) in everyday practice. Methods. - A scientific committee selected 10 questions using the Delphi consensus procedure. Evidence-based responses to each question were sought by searching the PubMed and Ovid databases and the abstract databases for the 2002, 2003, and 2004 annual meetings of the French Society for Rheumatology, the EULAR, and the American College of Rheumatology. The following indexing terms were used: rheumatoid arthritis, arthritis, patient, diagnostic imaging, radiography, joint, erosion, and joint space width. All articles published in French or English prior to May 2004 were identified. The evidence from these articles was reported to a panel of 77 rheumatologists working in hospital or office practice. The panel developed detailed recommendations, filling gaps in evidence with their expert opinion. The strength of each recommendation was determined. Results. - The 10 questions probed the structural evaluation of RA by plain radiography, magnetic resonance imaging (MRI), and ultrasonography, both for diagnostic and monitoring purposes. The literature search retrieved 673 publications, of which 166 were selected and reviewed. The panel developed 10 recommendations, one for each question, which were accepted by consensus. Conclusion. - Recommendations relative to the diagnosis or monitoring of structural involvement in patients with RA in everyday practice were developed. They should help to improve practice uniformity and, ultimately, to improve the management of RA. (c) 2005 Elsevier SAS. All fights reserved. |
| C1 | Cochin Teaching Hosp, Dept Rheumatol, Paris, France. Pitie Salpetriere Teaching Hosp, Dept Rheumatol, Paris, France. La Conception Teaching Hosp, Dept Rheumatol, Marseille, France. Lapeyronie Teaching Hosp, Immunorheumatol Dept, Montpellier, France. Roger Salengro Teaching Hosp, Dept Rheumatol, Lille, France. Tours Teaching Hosp, Dept Rheumatol, Tours, France. Rouen Teaching Hosp, Dept Rheumatol, Bois Guillaume, France. Bicetre Teaching Hosp, Dept Rheumatol, Le Kremlin Bicetre, France. Le Mans Hosp Ctr, Dept Rheumatol, Le Mans, France. Jean Minjoz Teaching Hosp, Dept Rheumatol, Besancon, France. Pellegrin Teaching Hosp, Dept Rheumatol, Bordeaux, France. Hautepierre Teaching Hosp, Dept Rheumatol, Strasbourg, France. |
| RP | Dougados, M, Hop Cochin, Serv Rhumatol, 27,Rue Faubourg St Jacques, F-75014 Paris, France. |
| EM | maxime.dougados@cch.ap-hop-paris.fr |
| TC | 0 |
| PD | MAY |
| PY | 2005 |
| VL | 72 |
| IS | 3 |
| BP | 229 |
| EP | 234 |
| UT | ISI:000228879100008 |
| ER |
| PT | J |
| AU | Inaguma, Y Greneche, JM Crosnier-Lopez, MP Katsumata, T Calage, Y Fourquet, JL |
| TI | Structure and Mossbauer studies of F-O ordering in antiferromagnetic perovskite PbFeO2F |
| SO | CHEMISTRY OF MATERIALS |
| AB | The synthesis of PbFeO2F is achieved using a solid-state reaction under high pressure. This perovskite crystallizes in SG Pm (3) over barm (No. 221) with a = 0.39991 (1) nm. The Rietveld refinement using powder X-ray diffraction data shows that the mean structure of this compound can be characterized as follows: (1) the Pb ion statically shifts from the 1a Wyckoff position in the twelve (110) direction toward anions (O, F), and (2) the Fe ion is located in a single crystallographic site. In contrast, hyperfine data estimated from Mossbauer spectra at different temperatures suggest the existence of different Fe sites, and the isomer shift is consistent with the presence of high-spin (HS) Fe3+ ions located in FeO4F2 octahedral units, where anions are randomly distributed. Such a distribution thus favors two prevailing Fe sites, namely cis and trans. No evidence of O/F ordering in PbFeO2F was detected by electron diffraction experiments. Finally, in-field Mossbauer spectra unambiguously reveal that PbFe2OF behaves as an antiferromagnet, which is consistent with static magnetic measurements. |
| C1 | Gakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, Tokyo 1718588, Japan. Univ Maine, CNRS, UMR 6010, Lab Oxydes & Fluorures, F-72085 Le Mans, France. Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. Univ Maine, CNRS, FR 2575, IRIM2F,Inst Rech Ingn Mol & Mat Fonct, F-72085 Le Mans, France. |
| RP | Inaguma, Y, Gakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, 1-5-1 Mejiro, Tokyo 1718588, Japan. |
| EM | yoshiyuki.inaguma@gakushuin.ac.jp |
| TC | 0 |
| PD | MAR 22 |
| PY | 2005 |
| VL | 17 |
| IS | 6 |
| BP | 1386 |
| EP | 1390 |
| UT | ISI:000227772100022 |
| ER |
| PT | J |
| AU | Allard, JF Henry, M Boeckx, L Leclaire, P Lauriks, W |
| TI | Acoustical measurement of the shear modulus for thin porous layers |
| SO | JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA |
| AB | Simulations performed with the Biot theory show that for thin porous layers, a shear mode of the structure can be induced by a point-source in air located close to the layer. The simulations show that this mode is present around frequencies where the quarter wavelength of the shear Biot wave is equal to the thickness of the samples and show that it can be acoustically detected from the fast variations with frequency of the location of a pole of the reflection coefficient close to grazing incidence. The mode has been detected with this method for two reticulated plastic foams. For one of the foams studied, the velocity and the damping of the Rayleigh wave have been measured on a thicker layer of the same medium at higher frequencies, giving a real part of the shear modulus close to the one obtained from the measured location of the pole. The strong coupling of the shear mode with the acoustic field in air allows the measurement of the shear modulus without mechanical excitation. (c) 2005 Acoustical Society of America. |
| C1 | Univ Maine, CNRS, UMR 6613, Acoust Lab, F-72085 Le Mans, France. Katholieke Univ Leuven, Dept Natuurkunde, Lab Akoestiek Therm Fys, B-3001 Heverlee, Belgium. |
| RP | Henry, M, Univ Maine, CNRS, UMR 6613, Acoust Lab, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | mihenry@univ-lemans.fr |
| TC | 0 |
| PD | APR |
| PY | 2005 |
| VL | 117 |
| IS | 4 |
| PN | Part 1 |
| BP | 1737 |
| EP | 1743 |
| UT | ISI:000228628400006 |
| ER |
| PT | J |
| AU | Gusev, V |
| TI | On the interaction of counterpropagating acoustic waves in resonant rods composed of materials with hysteretic quadratic nonlinearity |
| SO | JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA |
| AB | An ordinary inhomogeneous integrodifferential equation for the profile of the acoustic wave in a resonant rod, composed of a material with hysteretic quadratic nonlinearity, is derived. It explicitly takes into account the interaction of the counterpropagating acoustic waves. It also incorporates the boundary conditions in the sense that all possible solutions of the equation satisfy the appropriate boundary conditions at the ends of the rod. (c) 2005 Acoustical Society of America. |
| C1 | Univ Maine, F-72085 Le Mans, France. |
| RP | Gusev, V, Univ Maine, F-72085 Le Mans, France. |
| EM | vitali.goussev@univ-lemans.fr |
| TC | 0 |
| PD | APR |
| PY | 2005 |
| VL | 117 |
| IS | 4 |
| PN | Part 1 |
| BP | 1850 |
| EP | 1857 |
| UT | ISI:000228628400015 |
| ER |
| PT | J |
| AU | Fautrel, B Pham, T Gossec, L Combe, B Flipo, RM Goupille, P Le Loet, X Mariette, X Puechal, X Wendling, D Schaeverbeke, T Sibilia, J Sany, J Dougados, M |
| TI | Role and modalities of information and education in the management of patients with rheumatoid arthritis: development of recommendations for clinical practice based on published evidence and expert opinion |
| SO | JOINT BONE SPINE |
| AB | Objectives. - To develop recommendations for the information and
education of patients with rheumatoid arthritis (RA) seen in everyday
practice, using evidence from the literature, supplemented with expert
opinion when needed. Methods. - A scientific committee developed eight questions using the Delphi consensus procedure. A task force reviewed the literature for answers to these questions, using the PubMed Medline database (1980-2004) and the 2002-2004 databases of the annual meetings held by the French Society for Rheumatology (SFR), the European League Against Rheumatism (EULAR), and the American College of Rheumatology (ACR); the indexing terms for the search were rheumatoid, arthritis, patient, education, information, knowledge, general practitioner, family doctor, and continuing medical education. Only articles in French or English were included. A panel of rheumatologists used the evidence thus compiled to develop recommendations for each question; gaps in evidence were filled by calling on the panelists' expert opinion. For each recommendation, the level of evidence and extent of agreement among panelists were specified. Results. - There were four general questions about the objectives, supports, and mode of delivery (group or one-on-one) of patient information and education, as well as on evaluating knowledge, and four specific questions on program content. The search identified 1235 articles; 144 were selected on the title and 118 of those on the abstract. Three abstracts presented at meetings were also kept. The evidence from the literature was presented to the panelists during interactive workshops. The panelists then developed eight recommendations, all of which were grade D because no published studies specifically addressed everyday clinical practice. Agreement among panelists ranged across recommendations from 85.7% to 100%. Conclusion. - Recommendations about educating and informing patients with RA in everyday practice were developed. They should increase practice uniformity and ultimately optimize the management of patients with RA. (c) 2005 Elsevier SAS. All rights reserved. |
| C1 | Hop Cochin, Serv Rhumatol B, F-75014 Paris, France. Grp Hosp Pitie Salpetriere, Serv Rhumatol, F-75634 Paris, France. CHU Concept, Serv Rhumatol, Marseille, France. CHU Lapeyronie, Serv Immunorhumatol, Montpellier, France. CHRU Roger Salengro, Serv Rhumatol, Lille, France. CHU Tours, Serv Rhumatol, Tours, France. CHU Rouen, Serv Rhumatol, Bois Guillaume, France. Hop Bicetre, Serv Rhumatol, Le Kremlin Bicetre, France. Ctr Hosp, Serv Rhumatol, Le Mans, France. CHU Jean Minjoz, Serv Rhumatol, Besancon, France. CHU Pellegrin, Serv Rhumatol, Bordeaux, France. CHU Hautepierre, Serv Rhumatol, F-67098 Strasbourg, France. |
| RP | Dougados, M, Hop Cochin, Serv Rhumatol B, 27 Rue Faubourg Saint Jacques, F-75014 Paris, France. |
| EM | maxime.dougados@cch.ap-hop-paris.fr |
| TC | 0 |
| PD | MAR |
| PY | 2005 |
| VL | 72 |
| IS | 2 |
| BP | 163 |
| EP | 170 |
| UT | ISI:000228744100013 |
| ER |
| PT | J |
| AU | Hichri, H Stoetzel, C Laurier, V Caron, S Sigaudy, S Sarda, P Hamel, C Martin-Coignard, D Gilles, M Leheup, B Holder, M Kaplan, J Bitoun, P Lacombe, D Verloes, A Bonneau, D Perrin-Schmitt, F Brandt, C Besancon, AF Mandel, JL Cossee, M Dollfus, H |
| TI | Testing for triallelism: analysis of six BBS genes in a Bardet-Biedl syndrome family cohort |
| SO | EUROPEAN JOURNAL OF HUMAN GENETICS |
| AB | The phenotype of Bardet - Biedl syndrome (BBS) is defined by the association of retinitis pigmentosa, obesity, polydactyly, hypogenitalism, renal disease and cognitive impairement. The significant genetic heterogeneity of this condition is supported by the identification, to date, of eight genes (BBS1 - 8) implied with cilia assembly or function. Triallelic inheritance has recently been suggested on the basis of the identification of three mutated alleles in two different genes for the same patient. In a cohort of 27 families, six BBS genes ( namely BBS1, BBS2, BBS4, BBS6, BBS7 and BBS8) have been studied. Mutations were identified in 14 families. Two mutations within the same gene have been identified in seven families. BBS1 is most frequently implied with the common M390R substitution at the homozygous state ( n = 2), or associated with another mutation at BBS1 ( n = 3). Compound heterozygous mutations have been found in BBS2 ( one family) and BBS6 ( one family). In seven other families, only one heterozygous mutation has been identified ( once in BBS1, twice for BBS2 and three times in BBS6). Although our study did not reveal any families with bona fide mutations in two BBS genes, consistent with a triallelic hypothesis, we have found an excess of heterozygous single mutations. This study underlines the genetic heterogeneity of the BBS and the involvement of possibly unidentified genes. |
| C1 | Hop Univ Strasbourg, Lab Diagnost Genet, Strasbourg, France. Univ Strasbourg 1, Inst Genet & Biol Cellulaire & Mol, CNRS, INSERM, Strasbourg, France. Hop Univ Strasbourg, Federat Genet, Strasbourg, France. Hop Enfants La Timone, Serv Genet, Marseille, France. CHU Montpellier, Serv Genet Med, Montpellier, France. CHU Montpellier, Serv Ophtalmol, Montpellier, France. Ctr Hosp Mans, Serv Pediat, Le Mans, France. CHU Amiens, Dept Pediat, Amiens, France. CHU Nancy, Serv Genet, Nancy, France. CHU Lille, Serv Genet, Lille, France. Hop Necker Enfants Malad, Med Genet Lab, Paris, France. Hop Jean Verdier, Serv Pediat, Bondy, France. CHU Bordeaux, Serv Genet, Bordeaux, France. Hop Robert Debre, Unite Genet Clin, F-75019 Paris, France. CHU Angers, Serv Genet Med, Angers, France. Hop Univ Strasbourg, Ctr Invest Clin, Strasbourg, France. Hop Univ Strasbourg, Direct Rech Clin, Strasbourg, France. Coll France, F-75231 Paris, France. |
| RP | Dollfus, H, Fac Med Strasbourg, Genet Lab, 9eme Etage,11 Rue Humann, F-67000 Strasbourg, France. |
| EM | helene.dollfus@medecine.u-strasbg.fr |
| TC | 0 |
| PD | MAY |
| PY | 2005 |
| VL | 13 |
| IS | 5 |
| BP | 607 |
| EP | 616 |
| UT | ISI:000228692000017 |
| ER |
| PT | J |
| AU | Tigrine, R Khater, A Belhadi, M Rafil, O |
| TI | Vibration spectra of soliton boundaries separating nanostructured 2D hexagonal lattice domains |
| SO | SURFACE SCIENCE |
| AB | We investigate the vibration spectra at domain boundaries called heavy and superheavy solitons that separate phase domains in hexagonal two dimensional lattices. The breakdown of translation symmetry in the 2D plane, normal to a soliton domain boundary, gives rise to localized vibration effects. The matching method is used to calculate the characteristic vibration Green functions, spectral densities, and densities of states, for the vibration components of the individual atomic sites that constitute a complete representation of the heavy and superheavy soliton domain boundaries. The variations of these vibration spectra due to changes in the homogeneous elastic constraints in the soliton domain boundary are calculated. It is shown that the calculated vibration spectra are sensitive and explicit signatures for the softening and hardening effects. The theoretical results yield criteria under certain experimental conditions, as regards the interpretation of the measurements of the elastic constraints in the domain boundaries. (c) 2005 Elsevier B.V. All rights reserved. |
| C1 | Univ Mouloud Mammeri, Fac Sci, Dept Phys, Tizi Ouzou 15000, Algeria. Univ Maine, Lab Phys Etat Condense, F-72085 Le Mans, France. Univ Francaise Egypte & Ambassade France, Cairo, Egypt. |
| RP | Tigrine, R, Univ Mouloud Mammeri, Fac Sci, Dept Phys, BP17 RP, Tizi Ouzou 15000, Algeria. |
| EM | rtigrine@univ-lemans.fr khater.antoine@uqam.ca |
| TC | 0 |
| PD | APR 10 |
| PY | 2005 |
| VL | 580 |
| IS | 1-3 |
| BP | 1 |
| EP | 10 |
| UT | ISI:000228544100002 |
| ER |
| PT | J |
| AU | Smarsly, B Gibaud, A Ruland, W Sturmayr, D Brinker, CJ |
| TI | Quantitative SAXS analysis of oriented 2D hexagonal cylindrical silica mesostructures in thin films obtained from nonionic surfactants |
| SO | LANGMUIR |
| AB | Oriented mesostructured surfactant-silica nanocomposite thin films with a 2D hexagonal mesostructure of cylindrical micelles were prepared by evaporation-induced self-assembly using two different nonionic Brij surfactants and studied by small-angle X-ray scattering in symmetric reflection (SRSAXS) and grazing incidence (GISAXS) geometries. A novel SRSAXS evaluation approach was applied that allowed a good fitting of the SRSAXS data over almost the whole range of scattering vectors. Aside from the cylinder radius and the lattice parameter, the approach provided accurate values for the polydispersity of the micelles, lattice distortions, and preferred orientation. These analyses revealed a significant rise of the micelle radius and accordingly the lattice parameter upon an increase in the ratio surfactant/SiO2, attributable to a decrease in the solubilization of the poly(ethylene oxide) (PEO) chains by water, in agreement with Monte Carlo simulations. Furthermore, the SRSAXS analysis was successfully applied to the corresponding mesoporous films for the determination of pore sizes. |
| C1 | Max Planck Inst Colloids & Interfaces, D-14476 Potsdam, Germany. Univ New Mexico, Adv Mat Lab, Albuquerque, NM 87106 USA. Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. Univ Marburg, Fachbereich Chem, D-35032 Marburg, Germany. Sandia Natl Labs, Albuquerque, NM 87185 USA. |
| RP | Smarsly, B, Max Planck Inst Colloids & Interfaces, Am Muhlenberg 1, D-14476 Potsdam, Germany. |
| EM | smarsly@mpikg.mpg.de |
| TC | 0 |
| PD | APR 26 |
| PY | 2005 |
| VL | 21 |
| IS | 9 |
| BP | 3858 |
| EP | 3866 |
| UT | ISI:000228590800021 |
| ER |
| PT | J |
| AU | Balkau, B Hillier, T Vierron, E D'Hour, A Lepinay, P Royer, B Born, C |
| TI | Comment to: Borch-Johnsen K, Colagiuri S, Balkau B et al (2004) Creating a pandemic of prediabetes: the proposed new diagnostic criteria for impaired fasting glycaemia. Diabetologia 47 : 1396-1402 |
| SO | DIABETOLOGIA |
| C1 | INSERM, U258, IFR69, F-94807 Villejuif, France. Kaiser Permanente, Ctr Hlth Res NW Hawaii, Portland, OR USA. Inst Inter Reg Sante, Le Mans, France. Ctr Examens Sante, Orleans, France. Inst Inter Reg Sante, La Riche, France. |
| RP | Balkau, B, INSERM, U258, IFR69, 16 Ave Paul Vaillant Couturier, F-94807 Villejuif, France. |
| EM | balkau@vjf.inserm.fr |
| TC | 0 |
| PD | APR |
| PY | 2005 |
| VL | 48 |
| IS | 4 |
| BP | 801 |
| EP | 802 |
| UT | ISI:000228515900030 |
| ER |
| PT | J |
| AU | Hunault-Berger, M Tanguy-Schmidt, A Rachieru, P Levy, V Truchan-Graczyk, M Francois, S Gardembas-Pain, M Dib, M Foussard, C Piard, N Godon, A Solal-Celigny, P Ifrah, N |
| TI | rHuEpo before high-dose therapy allows autologous peripheral stem-cell transplantation without red blood cell transfusion: a pilot study |
| SO | BONE MARROW TRANSPLANTATION |
| AB | To decrease red blood cell (RBC) transfusion requirements during high-dose therapy (HDT) for hematological malignancies, we conducted a pilot study to assess the effect of recombinant human erythropoietin (rHuEpo) given during chemotherapy before HDT and autologous peripheral stem-cell transplantation (APSCT). The transfusion histories of 15 HDT and APSCT for hematological disease performed in 11 consecutive patients who received rHuEpo (10 000 U subcutaneously three times/week) were compared to those of 22 HDT and ASCT performed in 17 consecutive historical controls matched for hematological parameters. rHuEpo increased the hemoglobin (Hb) level from 10.3 +/- 2.3 g/dl at diagnosis to 12.9 +/- 2.2 g/dl at the time of HDT in 11 patients; no major adverse effects occurred. Compared to historical controls (95%, 21/22), RBC transfusion requirements were significantly lower for rHuEpo recipients (26%, 4/15) (P=0.00001) and rHuE-po responders (15%, 2/13) (P=0.000002). After HDT and APSCT, fewer RBC transfusions were needed: 3.3, 1.2 and 0.3 RBC units for controls, rHuEpo recipients and rHuEpo responders, respectively (P=0.006 and 0.00002). Therefore, rHuEpo should be administered before, and not after HDT and APSCT, to lower RBC transfusion requirements after HDT and APSCT. |
| C1 | Univ Hosp, Blood Dis Dept, Angers, France. Hop St Louis, DBIM, Paris, France. Hop St Louis, INSERM, U444, Paris, France. Etablissement Francais Sang, Angers, France. Univ Hosp, Hematol Lab, Angers, France. Ctr Jean Bernard, Le Mans, France. |
| RP | Ifrah, N, CHU Angers, F-49033 Angers, France. |
| EM | noIfrah@chu-angers.fr |
| TC | 0 |
| PD | MAY |
| PY | 2005 |
| VL | 35 |
| IS | 9 |
| BP | 903 |
| EP | 907 |
| UT | ISI:000228520700007 |
| ER |
| PT | J |
| AU | Renou, P Bergelin-Besancon, A |
| TI | Internal medicine, report and stakes in a general hospital centre |
| SO | PRESSE MEDICALE |
| C1 | Ctr Hosp, Dept Med Interne, F-72037 Le Mans, France. |
| RP | Renou, P, Ctr Hosp, Dept Med Interne, 194,Ave Rubillard, F-72037 Le Mans, France. |
| TC | 0 |
| PD | MAR 26 |
| PY | 2005 |
| VL | 34 |
| IS | 6 |
| BP | 448 |
| EP | 448 |
| UT | ISI:000228214000015 |
| ER |
| PT | J |
| AU | Diop, M Rahmani, A Belli, A Gautheron, V Geyssant, A Cottalorda, J |
| TI | Influence off speed variation and age on the asymmetry of ground reaction forces and stride parameters of normal gait in children |
| SO | JOURNAL OF PEDIATRIC ORTHOPAEDICS-PART B |
| AB | The purpose of this study was to assess the influence of age and speed on the asymmetry of ground reaction forces (GRFs) and spatiotemporal parameters (STPs) during normal gait in 4- to 10-year-old children. Forty-seven children walked at three speeds on a treadmill dynamometer (ADAL; Tecmachine, Andrezieux Boutheon, France). Thirty steps were recorded at each speed for each foot for each child. The GRF and stride parameters were normalized to body weight and to body height, respectively. A left-right symmetry index (SI) was calculated for each parameter. The influence of both age and speed on the different SI was examined with a two-way analysis of variance. GRF and STP were asymmetric (SI ranged from +/- 1.92% to +/- 45.05%). The SI of forces F(z)1 and F(y)1 are negative in children aged 4-6 years, indicating that left F(z)1 and F(y)1 are higher than right F(z)1 and F(y)1. The cross effect of age and speed on the asymmetries of gait parameters was not significant. There was no significant effect of age on the asymmetries of vertical GRF and STR The asymmetry of vertical propulsive force (F(z)3) alone increased with the speed (P < 0.05). This study showed that the different tasks performed by the lower limbs could be responsible for the asymmetry of GRF and STP in children aged 4-6 years. It also shows that upper and lower limits of normal asymmetry of gait parameters are different. Therefore no single criterion value can be used to assess the symmetry of several gait parameters. The small values of upper and lower limits of symmetry indices of vertical forces and stride duration show that the symmetry indices of these variables are reliable measurements and should thus be used in symmetry analysis of gait in normal and disabled children. (c) 2004 Lippincott Williams T Wilkins. |
| C1 | Hop Nord St Etienne, Serv Chirurgie Infantile, F-42055 St Etienne, France. Univ St Etienne, Sch Med, GIP Exercise, Exercise & Disabil Physiol & Pathophysiol Lab, St Etienne, France. Univ Le Mans, Sch Med, Grp Physiol & Biomech Locomoto Apparatus, Le Mans, France. |
| RP | Cottalorda, J, Hop Nord St Etienne, Serv Chirurgie Infantile, F-42055 St Etienne, France. |
| EM | j.cotta@mageos.com |
| TC | 0 |
| PD | SEP |
| PY | 2004 |
| VL | 13 |
| IS | 5 |
| BP | 308 |
| EP | 314 |
| UT | ISI:000228418500005 |
| ER |
| PT | J |
| AU | Maslankiewicz, P Szade, J Winiarski, A Daniel, P |
| TI | Bridgman-Stockbarger growth and X-ray photoelectron spectroscopy study of LiY1-xEuxF4 crystals |
| SO | CRYSTAL RESEARCH AND TECHNOLOGY |
| AB | LiY1-xEuxF4 (x = 0; 0.1 nominally) crystals were obtained by a modified Bridgman-Stockbarger technique. Europium was found to coexist in the LiYF4:Eu crystal in two valence states, Eu3+ and Eu2+ the content of the latter being enhanced in the near-to-surface region. The presence of bulk divalent europium is attributed to a partial reduction of europium during crystal growth. Because of the presence of Eu2+, additional electronic states in the electronic gap of LiYF4 were observed. (c) 2005 WILEY-VCH Verlag GmbH L Co. KGaA, Weinheim. |
| C1 | Silesian Univ, Dept Solid State Phys, August Chelkowski Inst Phys, PL-40007 Katowice, Poland. Univ Maine, Lab Phys Etat Condense, CNRS, UMR 6087, F-72085 Le Mans, France. |
| RP | Szade, J, Silesian Univ, Dept Solid State Phys, August Chelkowski Inst Phys, Ul Uniwersytecka 4, PL-40007 Katowice, Poland. |
| EM | szade@us.edu.pl |
| TC | 0 |
| PD | APR |
| PY | 2005 |
| VL | 40 |
| IS | 4-5 |
| BP | 410 |
| EP | 418 |
| UT | ISI:000228258200019 |
| ER |
| PT | J |
| AU | Le Carrou, JL Gautier, F Dauchez, N Gilbert, J |
| TI | Modelling of sympathetic string vibrations |
| SO | ACTA ACUSTICA UNITED WITH ACUSTICA |
| AB | String instruments are usually composed of several strings connected to a vibrating body allowing efficient sound radiation. For some special string tunings, sympathetic vibrations can occur: if one string is excited, some others are also excited via the body. In order to investigate this phenomenon, an analytical model of a simplified generic string instrument has been developed. The body of the instrument is represented by a beam clamped at both ends, to which several strings are attached. The state vector formalism and the transfer matrix method are used to describe the propagation of bending and extensional waves in each sub-structure (strings and beam). Coupling conditions between sub-structures take into account the angle formed by the beam and the strings. This leads to a linear system from which the normal modes of the assembly are computed. Numerical computations are carried out in the case of the beam-2 strings assembly and mode shapes are classified thanks to a criterion, the kinetic energy ratio (KER). Four kinds of modes may be identified: beam modes, string modes, beam-string modes and string-string modes. The latter are responsible for sympathetic response. An experimental modal analysis carried out on a clamped beam equiped with two strings confirms our theoretical results. |
| C1 | Univ Maine, Lab Acoust, UMR 6613, CNRS, F-72085 Le Mans, France. |
| RP | Le Carrou, JL, Univ Maine, Lab Acoust, UMR 6613, CNRS, F-72085 Le Mans, France. |
| EM | jean-loic.le_carrou@univ-lemans.fr |
| TC | 0 |
| PD | MAR-APR |
| PY | 2005 |
| VL | 91 |
| IS | 2 |
| BP | 277 |
| EP | 288 |
| UT | ISI:000228392800010 |
| ER |
| PT | J |
| AU | Gohier, F Castanet, AS Mortier, J |
| TI | Ortholithiation of unprotected benzoic acids: Application for novel 2-chloro-6-substituted benzoic acid syntheses |
| SO | SYNTHETIC COMMUNICATIONS |
| AB | 2-Cbloro-6-substituted benzoic acids of the type 2a-h were prepared by the tandem metallation sequence from 2-chlorobenzoic acid 1 with the 1:1 complex sec-butyllithium/TMEDA in THF at -78 degrees C followed by quenching with electrophiles. |
| C1 | Univ Maine, Fac Sci, Unite Chim Organ Mol & Macromol, UMR 6011, F-72085 Le Mans, France. CNRS, Fac Sci, Unite Chim Organ Mol & Macromol, UMR 6011, F-72085 Le Mans, France. |
| RP | Mortier, J, Univ Maine, Fac Sci, Unite Chim Organ Mol & Macromol, UMR 6011, Ave Oliver Messiaen, F-72085 Le Mans, France. |
| EM | jacques.mortier@univ-lemans.fr |
| TC | 0 |
| PY | 2005 |
| VL | 35 |
| IS | 6 |
| BP | 799 |
| EP | 806 |
| UT | ISI:000228067400006 |
| ER |
| PT | J |
| AU | Lesur, G Bour, B |
| TI | Proton pump inhibitors and upper gastrointestinal bleeding |
| SO | GASTROENTEROLOGIE CLINIQUE ET BIOLOGIQUE |
| C1 | Hop Ambroise Pare, Serv Hepatogastroenterol, F-92104 Boulogne, France. Ctr Hosp, Dept Hepatogastroenterol, F-72000 Le Mans, France. |
| RP | Lesur, G, Hop Ambroise Pare, Serv Hepatogastroenterol, F-92104 Boulogne, France. |
| EM | gilles.lesur@apr.ap-hp.fr |
| TC | 0 |
| PD | FEB |
| PY | 2005 |
| VL | 29 |
| IS | 2 |
| BP | 137 |
| EP | 139 |
| UT | ISI:000228106300006 |
| ER |
| PT | J |
| AU | Lesur, G Bour, B Aegerter, P |
| CA | Assoc Nationale Hepatogastroentero |
| TI | Management of bleeding peptic ulcer in France: a national inquiry |
| SO | GASTROENTEROLOGIE CLINIQUE ET BIOLOGIQUE |
| AB | Aims of the study - To evaluate and compare management practices in
France for bleeding peptic ulcers using a national inquiry of
university and non-university hospitals. Method - Responses to questionnaires sent to 812 gastroenterologists, 496 practicing in non-university hospitals and 316 in university hospitals, were compared. Results - An analysis was possible in 279 (34 % response rate) of the questionnaires. Forrest classification was used more frequently in university hospitals (83 % vs 60 %, P < 0.01). Endoscopic hemostatic therapy was used more frequently in university hospitals for Forrest Ib (92 % vs 81 %, P = 0.02), IIa (93 % vs 73 %, P < 0.001), and IIb (58 % vs 29 %, P < 0.001) ulcers. Injection therapy, mainly epinephrine, was the first-intention treatment for 99 % of the responding gastroenterologists. Proportions of clinicians employing hemoclips (27 %) or argon plasma coagulation (21 %) were similar in both types of practice. Anti-secretory treatment included mainly omeprozole (82 %), given intravenously (76 %), sometimes as bolus iv doses followed by iv high-dose continuous infusion (15 %) with some variations according to the type of hospital. In the event of recurrent or persistent bleeding, surgery was more frequent in non-university hospitals. When rebleeding occurred, a second endoscopic treatment was performed in about one quarter of patients. Conclusion - In France, management practices for bleeding peptic ulcer vary between university and non-university hospitals. |
| C1 | Hop Ambroise Pare, Serv Hepatogastroenterol, F-92104 Boulogne, France. Ctr Hosp, Dept Hepatogastroenterol, F-72000 Le Mans, France. Hop Ambroise Pare, Dept Med Informat, F-92104 Boulogne, France. |
| RP | Lesur, G, Hop Ambroise Pare, Serv Hepatogastroenterol, F-92104 Boulogne, France. |
| EM | gilles.lesur@apr.ap-hop-paris.fr |
| TC | 0 |
| PD | FEB |
| PY | 2005 |
| VL | 29 |
| IS | 2 |
| BP | 140 |
| EP | 144 |
| UT | ISI:000228106300007 |
| ER |
| PT | J |
| AU | Cauet, G Strub, JM Leize, E Wagner, E Van Dorsselaer, A Lusky, M |
| TI | Identification of the glycosylation site of the adenovirus type 5 fiber protein |
| SO | BIOCHEMISTRY |
| AB | The fiber protein purified from the pool of nonincorporated viral protein after infection of cells with adenovirus type 5 exists as two forms separable by reverse-phase HPLC. As determined by mass spectrometry, this heterogeneity results from a difference in one O-linked N-acetylglucosamine (GlcNac). A western blot analysis using a monoclonal antibody directed against the GlcNac motif showed that only one of the two forms reacted with the antibody, suggesting that one form carries a single GlcNac and the other form has none. The ratio of glycosylated to nonglycosylated forms of fiber, which is about 1, is conserved in assembled viruses. After digestion of glycosylated fiber with endoproteinase GluC, isolation of the glycosylated peptide by reverse-phase HPLC, and chemical derivatization using dimethylamine, the site of glycosylation was located in the fiber shaft at serine 109 by mass spectrometry. Elimination of glycosylation by site-directed mutagenesis of fiber should help to understand the function of this postranslational modification. |
| C1 | Transgene SA, F-67082 Strasbourg, France. ECPM, Lab Spectrometrie Masse Bioorgan, F-67087 Strasbourg, France. |
| RP | Cauet, G, Biopep SA, 471 Rue Nungesser,Le Mans Cavaliers 2, F-34130 Mauguio, France. |
| EM | gilles.cauet@biopep.com |
| TC | 0 |
| PD | APR 12 |
| PY | 2005 |
| VL | 44 |
| IS | 14 |
| BP | 5453 |
| EP | 5460 |
| UT | ISI:000228252300018 |
| ER |
| PT | J |
| AU | Lepeltier, JP Matoussi, A Xu, M |
| TI | Reflected backward stochastic differential equations under monotonicity and general increasing growth conditions |
| SO | ADVANCES IN APPLIED PROBABILITY |
| AB | We prove the existence and uniqueness of the solution to certain reflected backward stochastic differential equations (RBSDEs) with one continuous barrier and deterministic terminal time, under monotonicity and general increasing growth conditions on the associated coefficient. As an application, we obtain, in some constraint cases, the price of an American contingent claim as the unique solution of such an RBSDE. |
| C1 | Univ Maine, Lab Stat & Proc, Dept Math, F-72085 Le Mans, France. |
| RP | Lepeltier, JP, Univ Maine, Lab Stat & Proc, Dept Math, F-72085 Le Mans, France. |
| EM | lepeltier@univ-lemans.fr anis.matoussi@univ-lemans.fr mingyu.xu@univ-lemans.fr |
| TC | 0 |
| PD | MAR |
| PY | 2005 |
| VL | 37 |
| IS | 1 |
| BP | 134 |
| EP | 159 |
| UT | ISI:000228137000007 |
| ER |
| PT | J |
| AU | Restrepo, J Greneche, JM |
| TI | Magnetic properties and critical behavior of random alpha-FeMnAl alloys: An Ising Monte Carlo study |
| SO | PHYSICAL REVIEW B |
| AB | The effect of atomic disorder, dilution, and competing interactions upon the magnetic properties of alpha-FeMnAl alloys with different stoichiometries is addressed by means of the Monte Carlo method. Magnetization per site, specific heat, and magnetic susceptibility were computed as a function of temperature on the basis of a Metropolis dynamics, from which critical exponents were estimated. Simulation was carried out in the frame of a random site-diluted three-dimensional Ising model with nearest-neighbor interactions, where Fe - Fe ferromagnetic and Fe - Mn, Mn - Mn antiferromagnetic interactions, as well as the Al dilutor effect, were taken into account. Results, which are summarized in a magnetic phase diagram, reveal the occurrence of several phases including reentrant and pure spin-glass behaviors below around 11 K, and a ferromagnetic to paramagnetic phase transition at temperatures between 100 K and 400 K. Finally, critical exponents, which are consistent with Harris criterion, are also compared to those obtained in other 3D random Ising models. |
| C1 | Univ Antioquia, Inst Fis, Grp Estado Solido, Medellin, Colombia. Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. |
| RP | Restrepo, J, Univ Antioquia, Inst Fis, Grp Estado Solido, AA 1226, Medellin, Colombia. |
| EM | jrestre@fisica.udea.edu.co |
| TC | 0 |
| PD | FEB |
| PY | 2005 |
| VL | 71 |
| IS | 6 |
| AR | 064406 |
| UT | ISI:000228013500040 |
| ER |
| PT | J |
| AU | Vu, NQ Leconte, S Brown, E Gree, D Gree, R Dujardin, G |
| TI | A straightforward and flexible [4+2] route to beta-C-naphthyl-2-deoxy-glycosides through tandem hydroboration-ketal reduction: De novo access to C-naphthyl-6-fluoro and 6,6-difluoro 2-deoxyglycosides |
| SO | JOURNAL OF ORGANIC CHEMISTRY |
| AB | Under standard hydroboration-oxidation conditions, the dihydropyrans 4 underwent a highly stereocontrolled tandem reaction, involving the expected hydration of the double bond together with the reduction of the ketal moiety. This unprecedented transformation gives rise to a short, [4 + 2]-based synthetic route to (+/-)-beta-C-naphthyl-2-deoxyglycosides 5, which allows a significant structural and functional diversity at C-6. We thus described the first synthesis of (+/-)-C-aryl-6-fluoro and -6,6-difluoro olivosides, via the allylic mono- and difluorides produced by regioselective fluorination of, respectively, hydroxyalkyl and oxoalkyl dihydropyran derivatives. |
| C1 | Univ Maine, CNRS, UMR 6011, UCO2M, F-72085 Le Mans, France. Univ Rennes 1, CNRS, UMR 6510, SESO, F-35042 Rennes, France. |
| RP | Dujardin, G, Univ Maine, CNRS, UMR 6011, UCO2M, F-72085 Le Mans, France. |
| EM | dujardin@univ-lemans.fr |
| TC | 0 |
| PD | APR 1 |
| PY | 2005 |
| VL | 70 |
| IS | 7 |
| BP | 2641 |
| EP | 2650 |
| UT | ISI:000227928200029 |
| ER |
| PT | J |
| AU | Dourdain, S Bardeau, JF Colas, M Smarsly, B Mehdi, A Ocko, BM Gibaud, A |
| TI | Determination by x-ray reflectivity and small angle x-ray scattering of the porous properties of mesoporous silica thin films |
| SO | APPLIED PHYSICS LETTERS |
| AB | Two-dimensional hexagonal silica thin films templated by a triblock copolymer were investigated by grazing incident small angle x-ray scattering (GISAXS) and x-ray reflectivity (XR) before and after removing the surfactant from the silica matrix. XR curves-analyzed above and below the critical angle of the substrate-are evaluated by the matrix technique to obtain the average electron density of the films, the wall thickness, the electron density of the walls, the radius of the pores, and subsequently the porosity of such mesoporous films. In combination with GISAXS, the surface area of the mesopores is ascertained, thereby providing a complete analysis of the porosity in thin films by x-ray scattering methods. (C) 2005 American Institute of Physics. |
| C1 | Univ Maine, Lab Phys Etat Condense, CNRS, UMR 6087, F-72085 Le Mans, France. Max Planck Inst Colloids & Interfaces, D-14424 Potsdam, Germany. Univ Montpellier 2, Lab Chim Mol & Organisat Solide, CNRS, UMR 5637, F-34095 Montpellier, France. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. |
| RP | Gibaud, A, Univ Maine, Lab Phys Etat Condense, CNRS, UMR 6087, F-72085 Le Mans, France. |
| EM | gibaud@univ-lemans.fr |
| TC | 0 |
| PD | MAR 14 |
| PY | 2005 |
| VL | 86 |
| IS | 11 |
| AR | 113108 |
| UT | ISI:000228050700088 |
| ER |
| PT | J |
| AU | Omote, M Kitaoka, H Kobayashi, E Suzuki, O Aratake, K Sano, H Mizutani, G Wolf, W Podloucky, R |
| TI | Spectral, tensor, and ab initio theoretical analysis of optical second harmonic generation from the rutile TiO2(110) and (001) faces |
| SO | JOURNAL OF PHYSICS-CONDENSED MATTER |
| AB | We give an overview of our recent experimental study on the optical second harmonic (SH) response of the rutile TiO2(110) and (001) faces, and the analysis of these results by phenomenological electromagnetic theory using nonlinear susceptibility tensors and by ab initio theory using the self-consistent full potential linearized augmented plane-wave (FLAPW) method within the local-density approximation. Since bulk rutile TiO2 has a uniaxial crystal structure of symmetry D-4h(14) the nonlinear optical response of its surface and bulk showed remarkable anisotropy. The TiO2 (110) face exhibited - stronger reflected SH response when the incident electric field was directed parallel than perpendicular to the [001] axis, while the TiO2(001) face exhibited relatively isotropic SH response. The anisotropy of the SH intensity patterns depended remarkably on the incident photon energy and the polarization combination. By using a phenomenological electromagnetic theory, we performed a simultaneous analysis of the SH intensity patterns from the (110) and (001) faces as a function of the sample rotation angle around its surface normal. As a result we could separate the contributions from the surface second-order and bulk higher-order nonlinear susceptibilities. We also found that the SH intensity spectra as a function of the SH photon energy depended strongly on the sample rotation angle and the polarization combination of the fundamental and SH light. The onset of the SH resonance of the TiO2 (110) face was located at 2h omega similar to 3.4 eV when the induced nonlinear polarization was perpendicular to the surface. It was located at 2h omega similar to 3.2 eV when the induced nonlinear polatization is parallel to the [001] direction in the surface plane. These onset energies were higher than the onset energy of the bulk linear absorption at 3.0 eV. On the other hand, the onset energy of the SH resonance of the (001) face was found at 2h omega similar to 3.0 eV. A discussion is given on the physical meaning of the observed SH intensity spectra. Furthermore, an ab initio. calculation of the nonlinear optical response from the TiO2 (110) surface using the FLAPW method was performed. The calculated results agreed very well with the experimental SH intensity patterns and spectra. We found both from the phenomenological and ab initio calculation that the main SH response from the TiO2 (110) surface originated from the Ti-O-Ti-O-zigzag chains on the TiO2 (110) surface. |
| C1 | Japan Adv Inst Sci & Technol, Tatsunokuchi, Ishikawa 9231292, Japan. Mat Design Sarl, F-72000 Le Mans, France. Univ Vienna, Inst Chem Phys, A-1090 Vienna, Austria. |
| RP | Mizutani, G, Japan Adv Inst Sci & Technol, Tatsunokuchi, Ishikawa 9231292, Japan. |
| EM | mizutani@jaist.ac.jp |
| TC | 0 |
| PD | MAR 2 |
| PY | 2005 |
| VL | 17 |
| IS | 8 |
| BP | S175 |
| EP | S200 |
| UT | ISI:000227892100001 |
| ER |
| PT | J |
| AU | Minisini, B Tsobnang, F |
| TI | Molecular mechanics studies of specific interactions in organomodified clay nanocomposite |
| SO | COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING |
| AB | Molecular mechanics calculations were performed to characterize organomodified clay. Supercells containing montmorillonite with a cation exchange capacity of 70 and 140 meq/100g organomodified with three mono-tailed and one di-tailed surfactants were constructed. The dependency of the total energy with respect to the basal spacing was calculated and used to gain insight into the equilibrium distance and the nature of the interactions. Equilibrium distances obtained for mono-tailed surfactants are in agreement with experimental results. The total energy versus distance curves are fitted to a Morse function allowing the analysis of the local behaviour at equilibrium. This procedure allows describing the ability of Ditallow surfactant to facilitate the intercalation of organic molecules. (c) 2004 Elsevier Ltd. All rights reserved. |
| C1 | Inst Super Mat & Mecan Avances Mans, F-72000 Le Mans, France. |
| RP | Minisini, B, Inst Super Mat & Mecan Avances Mans, 44 Av Bartholdi, F-72000 Le Mans, France. |
| EM | bminisini@ismans.univ-lemans.fr |
| TC | 0 |
| PY | 2005 |
| VL | 36 |
| IS | 4 |
| BP | 531 |
| EP | 537 |
| UT | ISI:000227783100017 |
| ER |
| PT | J |
| AU | Minisini, B Tsobnang, F |
| TI | Molecular dynamics study of specific interactions in grafted polypropylene organomodified clay nanocomposite |
| SO | COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING |
| AB | A molecular dynamics study was performed to analyze the interaction energy between an organomodified clay surface and functionalized polypropylene. A supercell containing montmorillonite with a cation exchange capacity of 140 meq/100 g organomodified with octadecyldimethyl 2-ethylhexyl ammonium and four polymer chains of 25 repeating units length was constructed. According to our results, pure polypropylene shows favorable interactions with organomodified clay surface. Theses interactions are improved in the presence of certain functional groups. The best improvement is obtained with maleic anhydride. Such result is actually in agreement with experimental data. (c) 2004 Elsevier Ltd. All rights reserved. |
| C1 | Inst Super Mat & Mecan Avances Mans, Dept Mat, F-72000 Le Mans, France. |
| RP | Minisini, B, Inst Super Mat & Mecan Avances Mans, Dept Mat, 44 Av Bartholdi, F-72000 Le Mans, France. |
| EM | bminisini@ismans.univ-lemans.fr |
| TC | 0 |
| PY | 2005 |
| VL | 36 |
| IS | 4 |
| BP | 539 |
| EP | 544 |
| UT | ISI:000227783100018 |
| ER |
| PT | J |
| AU | Bour, B Staub, JL Chousterman, M Labayle, D Nalet, B Nouel, O Pariente, A Tocque, E Bonnot-Marlier, S |
| TI | Long-term treatment of gastro-oesophageal reflux disease patients with frequent symptomatic relapses using rabeprazole: on-demand treatment compared with continuous treatment |
| SO | ALIMENTARY PHARMACOLOGY & THERAPEUTICS |
| AB | Background: On-demand treatment may be an alternative in the long-term
treatment of non-severe gastro-oesophageal reflux disease in patients
with frequent symptomatic relapses. Aim: To compare the efficacy of on-demand treatment with rabeprazole 10 mg versus continuous treatment in the long-term treatment of patients with frequent symptomatic relapses of mild to moderate gastro-oesophageal reflux disease. Methods: This randomized, open-label study enrolled patients diagnosed with non-erosive reflux disease or oesophagitis grade 1 or 2 (Savary-Miller classification) reporting frequent symptomatic relapses (requiring >= 2 courses of antisecretory therapy during the previous year), whose intensity is rated at least moderate (> 2 on a 5-point Likert scale). After a 4-week selection phase with rabeprazole 10 mg once daily, patients reporting symptom relief (Likert score <= 2) were randomized to receive either rabeprazole 10 mg continuous treatment or on-demand treatment for 6 months. The main evaluation criterion was the rate of symptom relief (scored on the Likert scale) after 6 months. Results: One hundred and seventy-six patients were enrolled in the 4-week selection phase (men, 53%; mean age, 49 years; non-erosive reflux disease, 36.4%; gastro-oesophageal reflux disease 1, 53.4%; gastro-oesophageal reflux disease 2, 10.2%). Rabeprazole relieved symptoms in 88.6% of patients. Of this group, 152 were randomized to the comparative phase to receive rabeprazole 10 mg continuous treatment (once daily) or on-demand treatment (continuous treatment, n = 81; on-demand treatment, n = 71). At month 6 (end point), the symptom relief rate was slightly higher for patients in the continuous treatment group compared with those in the on-demand treatment group: 86.4% versus 74.6%, respectively. This difference was not statistically significant (P = 0.065). For the overall quality of life score, there was no difference between the continuous treatment and on-demand treatment groups (86.25 and 84.94). Mean daily consumption of rabeprazole was significantly lower in the on-demand treatment group versus the continuous treatment group (0.31 tablets versus 0.96 tablets; P < 0.0001). Conclusion: On-demand therapy with rabeprazole 10 mg provides an alternative to continuous therapy in patients with mild to moderate gastro-oesophageal reflux disease suffering from frequent symptomatic relapses. |
| C1 | Le Mans Hosp, Hepatogastroenterol Dept, F-72037 Le Mans, France. Georges Renon Hosp, Hepatogastroenterol & Alcool Dept, Niort, France. Intercommunal Hosp, Internal Med & Hepatogastroenterol Dept, Creteil, France. Louise Michel Hosp, Hepatogastroenterol Dept, Evry, France. Montelimar Hosp, Hepatogastroenterol Dept, Montelimar, France. Yves Le Foll Hosp, Hepatogastroenterol Dept, Saint Brieuc, France. Francois Mitterrand Hosp, Hepatogastroenterol Dept, Pau, France. Janssen Cilag, Issy Les Moulineaux, France. |
| RP | Bour, B, Le Mans Hosp, Hepatogastroenterol Dept, F-72037 Le Mans, France. |
| EM | b.bour@ch-lemans.fr |
| TC | 0 |
| PD | APR 1 |
| PY | 2005 |
| VL | 21 |
| IS | 7 |
| BP | 805 |
| EP | 812 |
| UT | ISI:000227901200002 |
| ER |
| PT | J |
| AU | Felix, S Pagneux, V |
| TI | Ray-wave correspondence in bent waveguides |
| SO | WAVE MOTION |
| AB | The present paper is concerned with wave propagation at high frequency in bent waveguides. The multimodal formalism proposed in earlier papers by the authors is shown to be suitable for investigating very high frequency problems. Then, following works made by Luna-Acosta et al. (G. Luna-Acosta, J.A. Mendez-Bermudez, P. Seba, K.N. Pichugin, Classical versus quantum structure of the scattering probability matrix: chaotic waveguides, Phys. Rev. E 65 (2002) 046605; J.A. Mendez-Bermudez, G. Luna-Acosta, P. Seba, K.N. Pichugin, Understanding quantum scattering properties in terms of purely classical dynamics: two-dimensional open chaotic billiards, Phys. Rev. E 66 (2002) 046207) for open quantum billiards, the ray-wave correspondence of the scattering matrix (S matrix) is studied by first constructing a ray-S matrix and then comparing its structure with the structure of the wave-S matrix that is obtained with the exact multimodal formalism, for different geometries of curved waveguides. A great similarity between these two matrices is observed and it is shown that the scattering matrix constructed only by counting rays allows us to predict and understand numbers of the wave scattering properties in waveguides. (c) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, CNRS, UMR 6613, Acoust Lab, F-72085 Le Mans, France. |
| RP | Felix, S, PMC, CNRS, UMR 7643, Ecole Polytech, F-91128 Palaiseau, France. |
| EM | simon.felix@polytechnique.fr vincent.pagneux@univ-lemans.fr |
| TC | 0 |
| PD | APR |
| PY | 2005 |
| VL | 41 |
| IS | 4 |
| BP | 339 |
| EP | 355 |
| UT | ISI:000227690800004 |
| ER |
| PT | J |
| AU | Nicol, E Niepceron, F Bonnans-Plaisance, C Durand, D |
| TI | Nanostructures from photo-cross-linked amphiphilic poly(ethylene oxide)-b-alkyl diblock copolymers |
| SO | POLYMER |
| AB | Poly(ethylene oxide) monomethylether was functionalized by alkyl chains of various lengths (l = 10-19 methylene groups) bearing a polymerizable methacrylate moiety. Each synthesis step on the polymer gives quantitative functionalization rates. The self-assembly of the amphiphilic polymers in water was studied by light scattering for various end-groups. Sterical and polar effects were shown to influence the micellization step. The cores of the micelles formed by PEO-C-1-methacrylate were irreversibly cross-linked by UV irradiation. Star polymers that are stable under dilution in good solvent are obtained after 1-min irradiation. The hydrodynamic radius and the molar mass of the nanoparticles depend on the amount of photoinitiator introduced in the cores. (c) 2005 Elsevier Ltd. All rights reserved. |
| C1 | Univ Maine, UMR 6120, CNRS, F-72085 Le Mans, France. |
| RP | Durand, D, Univ Maine, UMR 6120, CNRS, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | dominique.durand@univ-lemans.fr |
| TC | 0 |
| PD | MAR 10 |
| PY | 2005 |
| VL | 46 |
| IS | 7 |
| BP | 2020 |
| EP | 2028 |
| UT | ISI:000227654500003 |
| ER |
| PT | J |
| AU | Danworaphong, S Craig, W Gusev, V Diebold, GJ |
| TI | Thermal diffusion shock waves |
| SO | PHYSICAL REVIEW LETTERS |
| AB | The Ludwig-Soret effect or thermal diffusion, which refers to the separation of liquid mixtures in a temperature gradient, is governed by a nonlinear, partial differential equation in space and time. It is shown here that the solution to the nonlinear differential equation for a binary mixture predicts the existence of shock waves completely analogous to fluid shocks and obeys an expression for the shock velocity that is an exact analogue of the Rankine-Hugoniot relations. Direct measurements of the time dependent, spatial absorption profile of a suspension of nanometer sized particles subjected to a sinusoidal temperature field generated by a pair of continuous laser beams, as well as self-diffraction experiments, show motion of the particles in agreement with the predictions of nonlinear theory. |
| C1 | Brown Univ, Dept Phys, Providence, RI 02912 USA. Brown Univ, Dept Chem, Providence, RI 02912 USA. McMaster Univ, Dept Math, Hamilton, ON L8S 4K1, Canada. Univ Maine, F-72085 Le Mans, France. |
| RP | Danworaphong, S, Brown Univ, Dept Phys, Providence, RI 02912 USA. |
| TC | 0 |
| PD | MAR 11 |
| PY | 2005 |
| VL | 94 |
| IS | 9 |
| AR | 095901 |
| UT | ISI:000227566000034 |
| ER |
| PT | J |
| AU | Ruello, P Desgranges, L Baldinozzi, G Calvarin, G Hansen, T Petot-Ervas, G Petot, C |
| TI | Heat capacity anomaly in UO2 in the vicinity of 1300 K: an improved description based on high resolution X-ray and neutron powder diffraction studies |
| SO | JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS |
| AB | X-ray and neutron powder diffraction studies of UO2 were performed under controlled oxygen partial pressure between room temperature and 1673 K. More than 40 neutron diffraction patterns were recorded. The thermal expansion coefficient of UO2 and the temperature dependence of Debye-Waller factors for oxygen and uranium atoms were determined. The dependence of Debye-Waller factors as a function of temperature is linear and the thermal expansion coefficient follows the classical Debye regime within the temperature range 300-1000 K. Above 1200 K, a departure from this quasi-harmonic behavior is clearly observed. Both an abnormal increase of the thermal expansion and of the oxygen sublattice disorder are evidenced. The departure of the lattice parameter from a linear thermal variation is found to be thermally activated with an effective activation energy close to 1 eV, very similar to the activation energy already found for the electrical conductivity. This new result suggests that polarons may affect the mean lattice parameter. A new thermodynamic model is then proposed to explain the heat capacity thermal variation by only three contributions: harmonic phonons, thermal expansion and polarons. (c) 2004 Elsevier Ltd. All rights reserved. |
| C1 | Ecole Cent Paris, UMR 8580, CNRS, Lab Struct Proprietes & Modelisat Solides, F-92295 Chatenay Malabry, France. Inst Laue Langevin, F-38042 Grenoble, France. Commissariat Energie Atom, Ctr Cadarache, Dept Etude Combustible, F-13108 St Paul Les Durance, France. |
| RP | Ruello, P, Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | pascal.ruello@univ-lemans.fr |
| TC | 0 |
| PD | MAY |
| PY | 2005 |
| VL | 66 |
| IS | 5 |
| BP | 823 |
| EP | 831 |
| UT | ISI:000227627900019 |
| ER |
| PT | J |
| AU | Le Bail, A |
| TI | Inorganic structure prediction with GRINSP |
| SO | JOURNAL OF APPLIED CRYSTALLOGRAPHY |
| AB | A new computer program is described, GRINSP ( geometrically restrained inorganic structure prediction), which allows the exploration of the possibilities of occurrence of 3-, 4-, 5- and 6-connected three-dimensional networks. Hypothetical ( as well as known structure) models for binary compounds are produced with exclusive connection of polyhedra by corners, such as [MX3] triangles in M2X3 formulation, [MX4] tetrahedra in MX2 ( zeolites or dense SiO2 polymorphs), [MX5] polyhedra in M2X5, and finally [MX6] octahedra in MX3 polymorphs. Moreover, hypothetical ternary compounds are built up by combinations of either two different polyhedra or two different radii for two different cations adopting the same coordination. The cost function is based on the agreement of the model interatomic distances with ideal distances provided by the user. The Monte Carlo algorithm first finds structure candidates selected after the verification of the expected geometry, and then optimizes the cell parameters and the atomic coordinates. A satellite software ( GRINS) uses the predicted models and produces the characteristics of isostructural compounds which would be obtained by cationic substitutions. A huge list of CIF files of hypothetical boron oxide polymorphs ( including nanotubes), zeolites, aluminium and 3d-element fluorides, fluoroaluminates, borosilicates, titanosilicates, gallophosphates etc., is freely available at the PCOD ( Predicted Crystallography Open Database). |
| C1 | Univ Maine, CNRS, UMR 6010, Lab Oxydes & Fluorures, F-72085 Le Mans, France. |
| RP | Le Bail, A, Univ Maine, CNRS, UMR 6010, Lab Oxydes & Fluorures, Ave O, F-72085 Le Mans, France. |
| EM | alb@cristal.org |
| TC | 0 |
| PD | APR |
| PY | 2005 |
| VL | 38 |
| PN | Part 2 |
| BP | 389 |
| EP | 395 |
| UT | ISI:000227665900022 |
| ER |
| PT | J |
| AU | Wang, MJ Chang, YI Epaillard, FP |
| TI | Illustration of the interface between N-2/CO2 plasmas and polystyrene surface |
| SO | SURFACE AND INTERFACE ANALYSIS |
| AB | Plasma treatment results in the surface modification of materials and its effects generally can be examined by surface analytical methods such as contact angle measurement, XPS, atomic force microscopy, etc. In situ studies such as mass spectrometry and optical emission spectroscopy usually have been employed to analyse the reactive species in the plasma phase and provide information related to the mechanism of plasma treatment processes. This work shows that in situ studies not only verify the results of plasma treatment but also can provide a more effective method to analyse the mechanism of the plasma/surface interaction process, such as identification of the reactive species leading to functionalization of the surface and the species resulting from surface degradation. These real-time diagnostic methods confirm the suitable treatment conditions for both N-2 and CO2 plasmas for an applied power range of 20-40 W and a flow rate of 5-10 sccm, as shown previously with ex situ surface analyses. Copyright (C) 2005 John Wiley Sons, Ltd. |
| C1 | Univ Maine, Lab Polymeres Colloides Interfaces, CNRS, UMR 6120, F-72085 Le Mans, France. Tunghai Univ, Dept Chem Engn, Taichung 40704, Taiwan. |
| RP | Epaillard, FP, Univ Maine, Lab Polymeres Colloides Interfaces, CNRS, UMR 6120, Ave O Messiaen, F-72085 Le Mans, France. |
| EM | fabienne.poncin-epaillard@univ-lemans.fr |
| TC | 0 |
| PD | MAR |
| PY | 2005 |
| VL | 37 |
| IS | 3 |
| BP | 325 |
| EP | 331 |
| UT | ISI:000227499900008 |
| ER |
| PT | J |
| AU | Wang, MJ Chang, YI Poncin-Epaillard, F |
| TI | Acid and basic functionalities of nitrogen and carbon dioxide plasma-treated polystyrene |
| SO | SURFACE AND INTERFACE ANALYSIS |
| AB | The choice of plasma gas can determine the interaction between material
and plasma and therefore the applications of the treated materials.
Nitrogen plasma can integrate functional groups such as primary amines
and carbon dioxide plasma can incorporate carboxylic groups on the
surface of polymers. For specific adhesion such as bio-adhesion, polar
groups must be attached to the surface to enhance bio-film formation
but the acidic or basic character also controls the adhesion mechanism. Nitrogen and carbon dioxide plasmas are chosen to treat the surface of polystyrene and to show the effects of different functionalizations, i.e. attachment of acid or basic groups and degradation are compared in the present work. Nitrogen-containing plasma induces mainly weak degradation at a rate of similar to0.13 mug cm(-2) s(-1). The roughness of the treated surface remains mostly unchanged. Functionalization leads to amino group attachment at a concentration of 1.2 sites nm(-2). We found that carbon dioxide plasma treatment shows more drastic degradation with a rate three times higher than that of nitrogen plasma and can create more functional groups (4.5 sites nm(-2)) at mild plasma treatment. However, the roughness of the surface is altered. In both cases the aromatic groups are degraded through the plasma treatment (again this is more evident with the CO2 Plasma) and the induced functionalization was shown to be quick (the upper monolayer of polystyrene film can be functionalized rapidly). Copyright (C) 2005 John Wiley Sons, Ltd. |
| C1 | Univ Maine, Lab Polymeres Colloides Interfaces, CNRS, UMR 6120, F-72085 Le Mans, France. Tunghai Univ, Dept Chem Engn, Taichung 40704, Taiwan. |
| RP | Poncin-Epaillard, F, Univ Maine, Lab Polymeres Colloides Interfaces, CNRS, UMR 6120, Ave O Messiaen, F-72085 Le Mans, France. |
| EM | fabienne.poncin-epaillard@univ-lemans.fr |
| TC | 0 |
| PD | MAR |
| PY | 2005 |
| VL | 37 |
| IS | 3 |
| BP | 348 |
| EP | 355 |
| UT | ISI:000227499900012 |
| ER |
| PT | J |
| AU | Etchessahar, M Sahraoui, S Benyahia, L Tassin, JF |
| TI | Frequency dependence of elastic properties of acoustic foams |
| SO | JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA |
| AB | Polyurethane (PU) and other plastic foams are widely used as passive acoustic absorbers. For optimal design, it is often necessary to know the viscoelastic properties of these materials in the frequency range relevant to their application. A nonresonance technique (dynamic stiffness) based on a forced vibrations procedure is used to investigate the frequency dependent complex shear modulus of a PU foam. This modulus is first measured, in a quasistatic configuration, in the frequency range (0.016-16 Hz) at different temperatures between 0 and 20 degrees C. It is afterwards predicted over a wide frequency range (0.01-3000 Hz) using the frequency-temperature superposition principle. The validation of this principle is discussed through quasistatic experiments. Under the assumption that Poisson's ratio of polymeric foams is real and frequency independent on the frequency range used, the frequency dependence of the complex shear modulus obtained is used to predict the complex stiffness of the acoustic foam on a wide frequency range. (c) 2005 Acoustical Society of America. |
| C1 | Univ Maine, Acoust Lab, UMR 6613, CNRS, F-72085 Le Mans, France. CNRS, UMR 6120, Lab Polymeres Colloides Interfaces, F-72085 Le Mans, France. |
| RP | Etchessahar, M, Univ Maine, Acoust Lab, UMR 6613, CNRS, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | sohbi.sahraoui@univ-lemans.fr |
| TC | 0 |
| PD | MAR |
| PY | 2005 |
| VL | 117 |
| IS | 3 |
| PN | Part 1 |
| BP | 1114 |
| EP | 1121 |
| UT | ISI:000227574700013 |
| ER |
| PT | J |
| AU | Capon, F Ruello, P Bardeau, JF Simon, P Laffez, P Dkhil, B Reversat, L Galicka, K Ratuszna, A |
| TI | Metal-insulator transition in thin films of RxR ' 1-xNiO3 compounds: DC electrical conductivity and IR spectroscopy measurements |
| SO | JOURNAL OF PHYSICS-CONDENSED MATTER |
| AB | In this work a systematic comparison of DC electrical conductivity and IR optical properties of thin films of (RxR'1-xNiO3), where R' = Nd and R = Sm or Eu, is performed. Independently of the nature of R, it is confirmed that the metal-insulator transition temperature (T-MI) in RxR'1-xNiO3 as well as in RNiO3 is driven by the mean lattice distortion quantified by the tolerance factor of the perovskite. The internal chemical pressure decrease due to substitution of Nd by another rare earth element with smaller cationic radius gives rise to an increasing resistivity in the metallic state together with a decrease of the screening effect in the IR reflectance. We suggest this is due to a modification of the free electron properties at the Fermi level and of the Fermi surface proper-ties consistent with photoemission literature data. On the other hand, similar transmittance spectra for various systems are reported in the insulating state. A systematic temperature independent drop of the transmittance above 0.6 eV is found for each system whatever the value of T-MI. |
| C1 | Univ Maine, CNRS, UMr 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. CNRS, CRMHT, F-45071 Orleans, France. Ecole Cent Paris, UMR 8580, CNRS, Lab Struct Proprietes & Modelisat Solides, F-92295 Chatenay Malabry, France. Silesian Univ, Dept Solid State Phys, Inst Phys A Chelkowski, Katowice, Poland. |
| RP | Ruello, P, Univ Maine, CNRS, UMr 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. |
| EM | pascal.ruello@univ-lemans.fr |
| TC | 0 |
| PD | FEB 23 |
| PY | 2005 |
| VL | 17 |
| IS | 7 |
| BP | 1137 |
| EP | 1150 |
| UT | ISI:000227585500011 |
| ER |
| PT | J |
| AU | Nivanen, L Pezeril, M Wang, QA Le Mhaute, A |
| TI | Applying incomplete statistics to nonextensive systems with different q indices |
| SO | CHAOS SOLITONS & FRACTALS |
| AB | The nonextensive statistics based on the q-entropy S-q = [graphics] has been so far applied to systems in which the q value is uniformly distributed. For the systems containing different q's, the applicability of the theory is still a matter of investigation. The difficulty is that the class of systems to which the theory can be applied is actually limited by the usual nonadditivity rule of entropy which is no more valid when the systems contain non uniform distribution of q values. In this paper, within the framework of the so called incomplete information theory, we propose a more general nonadditivity rule of entropy prescribed by the zeroth law of thermodynamics. This new nonadditivity generalizes in a simple way the usual one and can be proved to lead uniquely to the q-entropy. (c) 2004 Elsevier Ltd. All rights reserved. |
| C1 | Inst Super Mat Mans, F-72000 Le Mans, France. Univ Maine, Lab Phys Etat Condense, F-72000 Le Mans, France. |
| RP | Wang, QA, Inst Super Mat Mans, 44,Ave FA Bartholdi, F-72000 Le Mans, France. |
| EM | awang@ismans.univ-lemans.fr |
| TC | 0 |
| PD | JUN |
| PY | 2005 |
| VL | 24 |
| IS | 5 |
| BP | 1337 |
| EP | 1342 |
| UT | ISI:000227597900018 |
| ER |
| PT | J |
| AU | Solal-Celigny, P Salles, GA Brousse, N Franchi-Rezgui, P Soubeyran, P Delwail, V Deconinck, E Haioun, C Foussard, C Sebban, C Tilly, H Milpied, NJ Boue, F Karsenti, JM Lederlin, P Najman, A Thieblemont, C Morschhauser, F Berriot-Varoqueaux, N Bergougnoux, L Colombat, P |
| TI | Single 4-dose rituximab treatment for low-tumor burden follicular lymphoma (FL): Survival analyses with a follow-up (F/up) of at least 5 years. |
| SO | BLOOD |
| C1 | Ctr Jean Bernard, Le Mans, France. CHU Necker, F-75015 Paris, France. CHU Lyon Sud, Pierre Benite, France. CHU St Louis, Paris, France. Bergonie Inst, Bordeaux, France. CHU Poitiers, Poitiers, France. CHU Jean Minjoz, Besancon, France. CHU Henri Mondor, F-94010 Creteil, France. CHU Hotel Dieu, Angers, France. Ctr Leon Berard, F-69373 Lyon, France. Ctr Henri Becquerel, F-76038 Rouen, France. CHU Hotel Dieu, Nantes, France. CHU Antoine Beclere, Clamart, France. CHU Archet, Nice, France. CHU Brabois, Vandoeuvre Les Nancy, France. CHU St Antoine, Paris, France. CHU Claude Huriez, Lille, France. Roche, Neuilly sur Seine, France. CHU Bretonneau, F-37044 Tours, France. |
| TC | 0 |
| PD | NOV 16 |
| PY | 2004 |
| VL | 104 |
| IS | 11 |
| PN | Part 1 |
| BP | 169A |
| EP | 169A |
| UT | ISI:000225127500588 |
| ER |
| PT | J |
| AU | Milpied, NJ Lamy, T Casassus, P Deconninck, E Gressin, R Maisonneuve, H Le Maignan, C Ramee, JF Tournilhac, O Dugay, J Legouffe, E Delwail, V Colombat, P |
| TI | Front-line high-dose chemotherapy (HDT) combined with rituximab for adults with aggressive large B-cell lymphoma (DLBCL): GOELAMS 074 trial. |
| SO | BLOOD |
| C1 | CHU Nantes, F-44035 Nantes 01, France. CHU, Rennes, France. Hosp Avicenne, Bobigny, France. CHU Besancon, Hematol & BMT Unit, F-25030 Besancon, France. Hosp Michallon, Grenoble, France. CHD, La Roche Sur Yon, France. Hosp Georges Pompidou, Paris, France. Ctr Catherine Sienne, Nantes, France. CHU, Clermont Ferrand, France. Reilly CH, Le Mans, France. Hosp Lapeyronie, Montpellier, France. CH, Poitiers, France. CHU Tours, Tours, France. |
| TC | 0 |
| PD | NOV 16 |
| PY | 2004 |
| VL | 104 |
| IS | 11 |
| PN | Part 1 |
| BP | 258A |
| EP | 258A |
| UT | ISI:000225127500904 |
| ER |
| PT | J |
| AU | Schmidt-Tanguy, A Desablens, B Lamy, T Bernard, M Senecal, D Abgrall, JF Casassus, P Dugay, J Rodon, P Hunault-Berger, M Ifrah, N Colombat, P |
| CA | GOELAMS Grp |
| TI | High dose and conventional anthracycline regimen for adult non-Hodgkin's primary bone lymphoma (PBL). A GOELAMS's trial. |
| SO | BLOOD |
| C1 | CHU Angers, Angers, France. CHU Amiens, Amiens, France. CHU Rennes, Rennes, France. CHU Tours, Tours, France. CHU Brest, F-29285 Brest, France. CHU Bobigny, Bobigny, France. CHU Mans, Le Mans, France. CHU Blois, Blois, France. |
| TC | 0 |
| PD | NOV 16 |
| PY | 2004 |
| VL | 104 |
| IS | 11 |
| PN | Part 1 |
| BP | 684A |
| EP | 684A |
| UT | ISI:000225127502495 |
| ER |
| PT | J |
| AU | Solal-Celigny, P Morschhauser, F Tournilhac, O Foussard, C Fitoussi, O Le Louet, AL Brice, P Lamy, T Tilly, H Gyan, E Agape, P Suc, E Saad, A Devidas, A Blanc, M Le Rol, A Galanaud, P Muller, JY Voog, E |
| TI | Late onset, acute severe neutropenia in patients treated with rituximab for B-cell lymphoproliferation. |
| SO | BLOOD |
| C1 | Ctr J Bernard, Le Mans, France. |
| TC | 0 |
| PD | NOV 16 |
| PY | 2004 |
| VL | 104 |
| IS | 11 |
| PN | Part 2 |
| BP | 235B |
| EP | 236B |
| UT | ISI:000225127700937 |
| ER |
| PT | J |
| AU | Minisini, B Tsobnang, F |
| TI | Ab initio comparative study of montmorillonite structural models |
| SO | APPLIED SURFACE SCIENCE |
| AB | Montmorillonite is one of the most commonly used 2:1 phyllosilicates. A characteristic feature of the smectites is a high degree of structural disorder leading to a high dispersity of the cation exchange capacity (CEC). The electrostatic interactions due to the CEC are important in a lot of industrial processes. We examine the electrostatic properties of Otay type montmorillonite as a function of the octahedral configuration. We have chosen two models of cis-vacant sites and two models of trans-vacant sites. A plane-wave density functional theory has been used to optimize the atomic positions and perform a Mulliken population analysis. The results of the hydrogen position and the electrostatic charges of the different layers are presented. From these results, the trans-vacant configuration shows a higher hydrophilic character than the cis-vacant configuration. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Inst Super Mat & Mecan Avancees Mans, F-72000 Le Mans, France. |
| RP | Minisini, B, Inst Super Mat & Mecan Avancees Mans, 44 Av Bartholdi, F-72000 Le Mans, France. |
| EM | mbminisini@ismans.univ-lemans.fr |
| TC | 0 |
| PD | MAR 31 |
| PY | 2005 |
| VL | 242 |
| IS | 1-2 |
| BP | 21 |
| EP | 28 |
| UT | ISI:000227508400003 |
| ER |
| PT | J |
| AU | Henderson, MJ Gibaud, A Bardeau, JF Rennie, AR White, JW |
| TI | A zirconium oxide film self-assembled at the air-water interface |
| SO | PHYSICA B-CONDENSED MATTER |
| AB | A self-assembled zirconia-based film, produced at the air-water interface using sodium dodecyl sulphate (SIDS) as the template, has been characterised by energy-dispersive X-ray reflectometry, X-ray diffraction, and X-ray fluorescence analysis. Long-range order due to the lamellar liquid crystalline arrangement of the surfactant micelles was significant enough to produce Bragg diffraction. X-ray fluorescence from the specimens in the electron microscope indicates that the principal component of the film contains zirconium, oxygen and sulphate, -suggesting that the film contains zirconium polyoxo ions and surfactant. Raman spectroscopy indicates the presence of a zirconium hydroxide. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Australian Natl Univ, Res Sch Chem, Canberra, ACT 0200, Australia. Univ Maine, UMR CNRS 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. Uppsala Univ, Studsv Neutron Res Lab, S-61182 Nykoping, Sweden. |
| RP | White, JW, Australian Natl Univ, Res Sch Chem, Canberra, ACT 0200, Australia. |
| EM | jww@rsc.anu.edu.au |
| TC | 0 |
| PD | FEB 28 |
| PY | 2005 |
| VL | 357 |
| IS | 1-2 |
| BP | 27 |
| EP | 33 |
| UT | ISI:000227309100007 |
| ER |
| PT | J |
| AU | Dourdain, S Rezaire, A Mehdi, A Ocko, BM Gibaud, A |
| TI | Real time GISAXS study of micelle hydration in CTAB templated silica thin films |
| SO | PHYSICA B-CONDENSED MATTER |
| AB | We have used grazing incidence small angle X-ray scattering (GISAXS) experiments to probe the mesoscopic organization of cetyltrimethyl ammonium bromide (CTAB) templated silica thin films combined to optical interferometry to monitor the macroscopic evolution of these films as a function of relative humidity (RH). The combination of these two experiments permits to address how water can penetrate or quit the silica network during cycling the RH. We report both the fast and the long time responses of these hybrid materials upon cycling the RH. We show that at high RH a hydration layer of one water molecule covers the micelles. Long time response evidences that the silica network remains flexible along the normal to the films for several hours. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, Fac Sci, CNRS, UMR 6087, F-72085 Le Mans, France. Univ Montpellier 2, CNRS, UMR 5637, Lab Chim Mol & Organ Solide, F-34095 Montpellier 5, France. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. |
| RP | Gibaud, A, Univ Maine, Fac Sci, CNRS, UMR 6087, F-72085 Le Mans, France. |
| EM | alain.gibaud@univ-lemans.fr |
| TC | 0 |
| PD | FEB 28 |
| PY | 2005 |
| VL | 357 |
| IS | 1-2 |
| BP | 180 |
| EP | 184 |
| UT | ISI:000227309100037 |
| ER |
| PT | J |
| AU | Puechal, X Le Goff, B Cantagrel, A Gayraud, M Hachulla, E Zabraniecki, L Cherin, P |
| TI | Dermatomyositis complicated by spontaneous pneumomediastinum: A series of seven cases and a literature review |
| SO | ARTHRITIS AND RHEUMATISM |
| C1 | Le Mans Gen Hosp, Le Mans, France. Univ Hosp, Toulouse, France. Univ Hosp, Paris, France. Univ Hosp, Lille, France. |
| TC | 0 |
| PD | SEP |
| PY | 2004 |
| VL | 50 |
| IS | 9 |
| SU | Suppl. S |
| BP | S104 |
| EP | S104 |
| UT | ISI:000223799000190 |
| ER |
| PT | J |
| AU | Mariette, X Ravaud, P Steinfeld, S Baron, G Hachulla, E Combe, B Puechal, X Pennec, Y Sauvezie, B Perdriger, A Hayem, G Sibilia, J |
| TI | Infliximab in primary Sjogren's syndrome: Open extension 2 of the TRIPSS study in 64 patients. |
| SO | ARTHRITIS AND RHEUMATISM |
| C1 | Hop Bicetre, Le Kremlin Bicetre, France. Hop Xavier Bichat, Paris, France. Erasme Univ Hosp, Brussels, Belgium. Huriez Hosp, Lille, France. Lapeyronie Hosp, Montpellier, France. Le Mans Hosp, Le Mans, France. Brest Hosp, Brest, France. Montpied Hosp, Clermont Ferrand, France. Sud Hosp, Rennes, France. Hautepierre Hosp, Strasbourg, France. |
| TC | 0 |
| PD | SEP |
| PY | 2004 |
| VL | 50 |
| IS | 9 |
| SU | Suppl. S |
| BP | S574 |
| EP | S574 |
| UT | ISI:000223799001576 |
| ER |
| PT | J |
| AU | Dougados, M Larrey, DD Solal-Celigny, R Murray, GGD Brin, SS Smolen, JJ |
| TI | Hepatic safety of leflunomide (LEF) in patients with rheumatoid arthritis: Results from the relief study |
| SO | ANNALS OF THE RHEUMATIC DISEASES |
| C1 | Univ Paris 05, Paris 14, France. Hop St Eloi, Montpellier, France. Ctr Jean Bernard, Le Mans, France. Univ Edinburgh, Med Stat Unit, Edinburgh EH8 9YL, Midlothian, Scotland. Lab Aventis, Paris, France. Univ Vienna, Interne Abt, A-1010 Vienna, Austria. |
| TC | 0 |
| PD | JUL |
| PY | 2003 |
| VL | 62 |
| SU | Suppl. 1 |
| BP | 167 |
| EP | 167 |
| UT | ISI:000224551400529 |
| ER |
| PT | J |
| AU | Maillefert, J Gossec, L Dernis, E Audia, S Trodi, N Hudry, C Gaudin, P Falgarone, G Julien, L Berthelot, J Puechal, X Tavernier, C |
| TI | Is the disease activity score clinically meaningful in daily practice? |
| SO | ANNALS OF THE RHEUMATIC DISEASES |
| C1 | Dijon Univ Hosp, Dijon, France. Univ Paris 05, Cochin Hosp, Paris, France. Le Mans Hosp, Le Mans, France. Grenoble Univ Hosp, Grenoble, France. Avicenne Univ Hosp, Bobigny, France. Nantes Univ Hosp, Nantes, France. |
| TC | 0 |
| PD | JUL |
| PY | 2004 |
| VL | 63 |
| SU | Suppl. 1 |
| BP | 185 |
| EP | 185 |
| UT | ISI:000224551500608 |
| ER |
| PT | J |
| AU | Ornetti, R Solau, E Sibilia, J Puechal, X Tavernier, C Maillefert, J |
| TI | Increase in methotrexate dose in rheumatoid ahthritis patients with an inadequate response to infliximab |
| SO | ANNALS OF THE RHEUMATIC DISEASES |
| C1 | Dijon Univ Hosp, Dijon, France. Lille Univ Hosp, Lille, France. Strasbourg Univ Hosp, Strasbourg, France. Le Mans Hosp, Le Mans, France. |
| TC | 0 |
| PD | JUL |
| PY | 2004 |
| VL | 63 |
| SU | Suppl. 1 |
| BP | 292 |
| EP | 292 |
| UT | ISI:000224551500972 |
| ER |
| PT | J |
| AU | Moudir-Thomas, C Foulet-Roge, A Plat, M Kaswin, R Lepic, P Solal-Celigny, P Lebas, FX |
| TI | Efficacy of rituximab in Lymphomatoid Granulomatosis |
| SO | REVUE DES MALADIES RESPIRATOIRES |
| AB | Introduction Lymphomatoid Granulomatosis is a rare and serious disease,
now considered to be a B-cell lymphoma, which is frequently associated
with Epstein-Barr virus infection. There is no consensus on treatment,
which is usually based on steroid therapy, either alone or combined
with cyclophosphamide and combination chemotherapy. Case Report We report the case of an asymptomatic patient diagnosed after the incidental discovery of bilateral nodular opacities on their chest x-ray. Physical examination and bronchoscopy were normal. The diagnosis of Lymphomatoid Granulomatosis was made on the basis of surgical lung biopsy. Immunohistochemical studies confirmed the B phenotype of the lymphoma with the identification of atypical large CD 20 positive cells. In situ hybridisation confirmed the presence of EBV. In this case the course of the disease was slow. Treatment with anti CD 20 monoclonal antibodies (rituximab) led initially to a reduction in parenchymal abnormalities and mediastinal adenopathy. Conclusion This treatment, recently used in Lymphomatoid Granulomatosis with pulmonary involvement, has shown promising results. Rituximab can be used in combination chemotherapy as standard treatment for aggressive B-cell lymphoma. |
| C1 | CH Mans, Dept Malad Resp, F-72037 Le Mans, France. Clin Jean Bernard, Le Mans, France. |
| RP | Lebas, FX, CH Mans, Dept Malad Resp, 194 Ave Rubillard, F-72037 Le Mans, France. |
| EM | fxlebas@ch-lemans.fr |
| TC | 0 |
| PD | DEC |
| PY | 2004 |
| VL | 21 |
| IS | 6 |
| PN | Part 1 |
| BP | 1157 |
| EP | 1161 |
| UT | ISI:000226909900019 |
| ER |
| PT | J |
| AU | Grzechnik, A Friese, K Dmitriev, V Weber, HP Gesland, JY Crichton, WA |
| TI | Pressure-induced tricritical phase transition from the scheelite structure to the fergusonite structure in LiLuF4 |
| SO | JOURNAL OF PHYSICS-CONDENSED MATTER |
| AB | LiLuF4 scheelite(I4(1)/a, Z = 4) has been investigated at high pressures using synchrotron angle-dispersive x-ray powder diffraction in a diamond anvil cell at room temperature. At 10.7 GPa, it reversibly undergoes a tricritical phase transition to the fergusonite structure (C12/c1, Z = 4), a distorted modification of the scheelite type. No other phase occurs in this material up to 19.5 GPa, the highest pressure in this study. Such a high-pressure behaviour is compared with the pressure-induced transformations in LiYF4 and LiGdF4, adding on to our knowledge of the structural systematics in LiMF4 compounds. |
| C1 | Univ Pais Vasco, Dept Fis Mat Condensada, E-48080 Bilbao, Spain. European Synchrotron Radiat Facil, Swiss Norwegian Beamlines, Grp Struct Mat Extreme Condit, F-38043 Grenoble, France. Ecole Polytech Fed Lausanne, EPFL, SB, IPMC,LCR,Lab Cristallog, CH-1015 Lausanne, Switzerland. Univ Maine Cristallogenese, F-72075 Le Mans, France. European Synchrotron Radiat Facil, F-38043 Grenoble, France. |
| RP | Grzechnik, A, Univ Pais Vasco, Dept Fis Mat Condensada, Apartado 644, E-48080 Bilbao, Spain. |
| EM | andrzej@wm.lc.ehu.es |
| TC | 0 |
| PD | FEB 2 |
| PY | 2005 |
| VL | 17 |
| IS | 4 |
| BP | 763 |
| EP | 770 |
| UT | ISI:000227224500023 |
| ER |
| PT | J |
| AU | Ollivier, S Kergomard, J Dalmont, JP |
| TI | Idealized models of reed woodwinds. Part II: On the stability of "two-step" oscillations |
| SO | ACTA ACUSTICA UNITED WITH ACUSTICA |
| AB | The stability of "two-step" oscillations in cylindrical and conical-like reed woodwinds is investigated within the scope of Raman's model applied to woodwinds. The use of idealized resonators which can be characterized by two reflection functions leads to iterative equations, from which a criterion for the stability of the oscillations can be derived by using a perturbation method. This criterion depends on the waveform and on the shape of the nonlinear pressure/flow characteristics. It is consistent with similar criteria given by previous authors for the bowed string and for the clarinet. Stability of some waveforms is firstly investigated for any characteristics, then for given elementary models of single reed woodwinds and results are compared to time domain simulations. |
| C1 | Univ Maine, Acoust Lab, UMR 6613, CNRS, F-72085 Le Mans 9, France. CNRS, UPR 7051, Lab Acoust & Mecan, F-13402 Marseille, France. |
| RP | Ollivier, S, Univ Maine, Acoust Lab, UMR 6613, CNRS, Av Oliver Messiaen, F-72085 Le Mans 9, France. |
| TC | 0 |
| PD | JAN-FEB |
| PY | 2005 |
| VL | 91 |
| IS | 1 |
| BP | 166 |
| EP | 179 |
| UT | ISI:000227288700015 |
| ER |
| PT | J |
| AU | Gusev, VE Diebold, GJ |
| TI | Imaging with the ultrasonic vibration potential: A theory for current generation |
| SO | ULTRASOUND IN MEDICINE AND BIOLOGY |
| AB | The current in a circuit produced by a time-varying polarization generated by an object within a body in response to the passage of ultrasound (US) is found through solution to Maxwell's equations. Current generation is modelled in a body with uniform dielectric constant and conductivity where a finite region within the body produces an ultrasonic vibration potential. The results of the calculation form the mathematical basis for imaging through use of the ultrasonic vibration potential. (E-mail: Gerald-Diebold@brown.edu) (C) 2005 World Federation for Ultrasound in Medicine Biology. |
| C1 | Univ Maine, F-72017 Le Mans, France. Brown Univ, Dept Chem, Providence, RI 02912 USA. |
| RP | Diebold, GJ, Univ Maine, F-72017 Le Mans, France. |
| EM | Gerald_Diebold@brown.edu |
| TC | 0 |
| PD | FEB |
| PY | 2005 |
| VL | 31 |
| IS | 2 |
| BP | 273 |
| EP | 278 |
| UT | ISI:000227027100016 |
| ER |
| PT | J |
| AU | Yahiaoui, A Belbachir, M Soutif, JC Fontaine, L |
| TI | Synthesis and structural analyses of poly(1,2-cyclohexene oxide) over solid acid catalyst |
| SO | MATERIALS LETTERS |
| AB | The polymerization of 1, 2-cyclohexene oxide was carried out at 20 degreesC in dichloromethane with an acid-exchanged montmorillonite as acid solid catalyst. The effect of the amount of catalyst, solvent, and temperature was studied. A typical reaction product (PCHO) was analyzed by infrared and nuclear magnetic resonance spectroscopy, as well as by gel-permeation chromatography and MALDI-TOF MS, X-ray diffraction, and differential scanning calorimetry (DSC). The X-ray and DSC data show that PCHO is an amorphous substance. The mechanism of the polymerization appears to be cationic. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Ctr Univ Mustapha Stambouli, Inst Hydraul, Mascara 29000, Algeria. Univ Oran, Fac Sci, Dept Chim, Lab Chim Polymeres, Oran 31000, Algeria. Univ Maine, LCOM, CNRS, UMR 6011,UCO2M, F-72085 Le Mans, France. |
| RP | Yahiaoui, A, Ctr Univ Mustapha Stambouli, Inst Hydraul, BP 763, Mascara 29000, Algeria. |
| EM | yahmeddz@yahoo.fr |
| TC | 0 |
| PD | MAR |
| PY | 2005 |
| VL | 59 |
| IS | 7 |
| BP | 759 |
| EP | 767 |
| UT | ISI:000226803200005 |
| ER |
| PT | J |
| AU | Farhi, B |
| TI | A polynomial approach to Faltings theorem. |
| SO | COMPTES RENDUS MATHEMATIQUE |
| AB | We present here an elementary proof of a quantitatively improved version of the Mordell's Conjecture which is now Faltings's Theorem. For the count of the 'large points' of C(K) (see below for the notations) we use Vojta's method which was simplified by Bombieri and then by T. de Diego, G. Remond. To count the points of small heights of C(K), we use a result of S. David and P. Philippon, allowing to us estimate the number of points of small height of the bigger set C ((K) over bar) boolean AND J (K). (C) 2004 Academie des sciences. Publie par Elsevier SAS. Tons droits reserves. |
| C1 | Univ Maine, Dept Math, F-72085 Le Mans, France. |
| RP | Farhi, B, Univ Maine, Dept Math, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | Bakir.Farhi@univ-lemans.fr |
| TC | 0 |
| PD | JAN 15 |
| PY | 2005 |
| VL | 340 |
| IS | 2 |
| BP | 103 |
| EP | 106 |
| UT | ISI:000227121800002 |
| ER |
| PT | J |
| AU | Giraudet, M Kuhlmann, FV Leloup, G |
| TI | Formal power series with cyclically ordered exponents |
| SO | ARCHIV DER MATHEMATIK |
| AB | We define and study a notion of ring of formal power series with exponents in a cyclically ordered group. Such a ring is a quotient of various subrings of classical formal power series rings. It carries a two variable valuation function. In the particular case where the cyclically ordered group is actually totally ordered, our notion of formal power series is equivalent to the classical one in a language enriched with a predicate interpreted by the set of all monomials. |
| C1 | Univ Paris 07, Fac Sci, Equipe Log, UPRESA 7056, F-72085 Le Mans, France. Univ Paris 07, Fac Sci, Dept Math, F-72085 Le Mans, France. Univ Saskatchewan, Math Sci Grp, Saskatoon, SK S7N 5E6, Canada. |
| RP | Giraudet, M, Univ Paris 07, Fac Sci, Equipe Log, UPRESA 7056, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | giraudet@logique.jussieu.fr fvk@math.usask.ca leloup@logique.jussieu.fr |
| TC | 0 |
| PD | FEB |
| PY | 2005 |
| VL | 84 |
| IS | 2 |
| BP | 118 |
| EP | 130 |
| UT | ISI:000227081800003 |
| ER |
| PT | J |
| AU | Renou, P |
| TI | Atheroma and auto-immunity |
| SO | PRESSE MEDICALE |
| C1 | Ctr Hosp, Dept Med Interne & Oncohematol, F-72037 Le Mans 1, France. |
| RP | Renou, P, Ctr Hosp, Dept Med Interne & Oncohematol, 194 Ave Rubillard, F-72037 Le Mans 1, France. |
| EM | phrenou@ch-lemans.fr |
| TC | 0 |
| PD | JAN 15 |
| PY | 2005 |
| VL | 34 |
| IS | 1 |
| BP | 57 |
| EP | 61 |
| UT | ISI:000226833900011 |
| ER |
| PT | J |
| AU | Beche, B Papet, P Debarnot, D Gaviot, E Zyss, J Poncin-Epaillard, F |
| TI | Fluorine plasma treatment on SU-8 polymer for integrated optics |
| SO | OPTICS COMMUNICATIONS |
| AB | The authors present a study of the influence of fluorine plasma
treatment on SU-8 polymer waveguides and investigate the property
changes including optical losses due to propagation, selectivity on the
polarisation modes, and so on. As cogent results, these techniques
based on radiofrequency fluorine plasma treatment (CF4) modified
strongly the abovementioned properties. First, the optical losses
ascribed to Si/SiO2/fluorinated SU-8 microstructures have been
evaluated to 1.25 dB/cm for TE00 polarisation, and then have been
reduced by 0.11 dB/cm, compared to propagation in pure SU-8. Moreover,
such a particular plasma treatment leads to a substantial selectivity
on optical polarisation states regarding the TM00 optical mode which
has been advantageously used. Thereby, integrated optical polarizers
have been achieved on fluorinated SU-8. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | CNRS, UMR 6502, LPCM, IMN,Lab Plasmas & Couches Minces, F-44322 Nantes, France. CNRS, UMR 6120, LPCI, F-72000 Le Mans, France. Univ Maine, Acoust Lab, LAUM, CNRS,UMR 6613, F-72000 Le Mans, France. ENS Cachan, LPQM, CNRS, UMR 8537,Lab Photon Quant & Mol, F-94235 Cachan, France. |
| RP | Beche, B, CNRS, UMR 6502, LPCM, IMN,Lab Plasmas & Couches Minces, F-44322 Nantes, France. |
| EM | bruno.beche@cnrs-imn.fr |
| TC | 0 |
| PD | FEB 1 |
| PY | 2005 |
| VL | 246 |
| IS | 1-3 |
| BP | 25 |
| EP | 28 |
| UT | ISI:000226896600005 |
| ER |
| PT | J |
| AU | Bougnoux, P Combe, M Goudier, MJ Facchini, T Lotz, V |
| TI | Phase II randomized trial of docetaxel (D) monotherapy vs epirubicin plus docetaxel (ED) as neoadjuvant treatment of operable breast cancer (BC). |
| SO | JOURNAL OF CLINICAL ONCOLOGY |
| C1 | Hop Bretonneau, Tours, France. Ctr Hosp, Le Mans, France. Ctr Hosp Bretagne Sud, Lorient, France. Polyclin Courlancy, Reims, France. Lab Aventis, Paris, France. |
| TC | 0 |
| PD | JUL 15 |
| PY | 2004 |
| VL | 22 |
| IS | 14 |
| SU | Suppl. S |
| BP | 27S |
| EP | 27S |
| UT | ISI:000223512400104 |
| ER |
| PT | J |
| AU | Brain, EGC Bachelot, T Serin, D Graic, Y Eymard, JC Extra, JM Combe, M Nogues, C Rouesse, J |
| TI | Phase III trial comparing doxorubicin docetaxel (AT) with doxorubicin cyclophosphamide (AC) in the adjuvant treatment of high-risk node negative (pNO) and limited node positive (pN+<= 53) breast cancer (BC) patients (pts): First analysis of toxicity. |
| SO | JOURNAL OF CLINICAL ONCOLOGY |
| C1 | Ctr Rene Huguenin, St Cloud, France. Ctr Leon Berard, F-69373 Lyon, France. Inst St Catherine, Avignon, France. Ctr Henri Becquerel, F-76038 Rouen, France. Inst Jean Godinot, Reims, France. Inst Curie, F-75231 Paris, France. Le Mans Hosp, Le Mans, France. |
| TC | 0 |
| PD | JUL 15 |
| PY | 2004 |
| VL | 22 |
| IS | 14 |
| SU | Suppl. S |
| BP | 31S |
| EP | 31S |
| UT | ISI:000223512400121 |
| ER |
| PT | J |
| AU | Dupuis, O Vie, B Lledo, G Hennequin, C Noirclerc, M Bennamoun, M Pavlovitch, JM Jacob, JH |
| TI | Capecitabine (X) chemoradiation (CRT) in the preoperative treatment of patients (pts) with rectal adenocarcinomas: A phase II GERCOR trial. |
| SO | JOURNAL OF CLINICAL ONCOLOGY |
| C1 | Clin Victor Hugo, Le Mans, France. Ctr F Baclesse, Caen, France. Clin St Jean, Lyon, France. Hop St Louis, Paris, France. Ctr Hosp, Mulhouse, France. Hop Raincy, Montfermeil, France. |
| TC | 0 |
| PD | JUL 15 |
| PY | 2004 |
| VL | 22 |
| IS | 14 |
| SU | Suppl. S |
| BP | 254S |
| EP | 254S |
| UT | ISI:000223512401005 |
| ER |
| PT | J |
| AU | Andre, T Maindrault-Goebel, F Mineur, L Michel, F Mabro, M Ganem, G Hebbar, M Avenin, D Moukhtar, R De Gramont, A |
| TI | Phase II study of an optimized 5FU-oxaliplatin strategy (OPTIMOX2) with celecoxib in metastatic colorectal cancer: A GERCOR study. |
| SO | JOURNAL OF CLINICAL ONCOLOGY |
| C1 | Hop Tenon, F-75970 Paris, France. Hop St Antoine, F-75571 Paris, France. Clin St Catrharine, Avignon, France. Hop Drevon, Dijon, France. Hop Foch, Suresnes, France. Clin Victor Hugo, Le Mans, France. CHRU, Lille, France. GERCOR, Paris, France. |
| TC | 0 |
| PD | JUL 15 |
| PY | 2004 |
| VL | 22 |
| IS | 14 |
| SU | Suppl. S |
| BP | 258S |
| EP | 258S |
| UT | ISI:000223512401021 |
| ER |
| PT | J |
| AU | Strauss, SJ Lister, TA Morschauser, F Gramatzki, M Solal-Celigny, P Zinzani, PL Engert, A Coiffier, B Hoelzer, DF Horak, ID |
| TI | Multi-centre, phase II study of combination antibody therapy with epratuzumab plus rituximab in relapsed/refractory indolent and aggressive NHIL: Promising preliminary results. |
| SO | JOURNAL OF CLINICAL ONCOLOGY |
| C1 | St Bartholomews Hosp, London, England. Serv Malad Sang, Lille, France. Univ Erlangen Nurnberg, Erlangen, Germany. Clin Victor Hugo, Le Mans, France. Univ Bologna, Inse Haematol Seragnoli, I-40126 Bologna, Italy. Univ Hosp, Cologne, Germany. Ctr Hosp Lyon Sud, F-69310 Pierre Benite, France. Univ Frankfurt Klinikum, D-6000 Frankfurt, Germany. Immunomed Inc, Morris Plains, NJ USA. |
| TC | 0 |
| PD | JUL 15 |
| PY | 2004 |
| VL | 22 |
| IS | 14 |
| SU | Suppl. S |
| BP | 577S |
| EP | 577S |
| UT | ISI:000223512402287 |
| ER |
| PT | J |
| AU | Milpied, NJ Lamy, T Casassus, P Deconninck, E Gressin, R Le Maignan, C Tournilhac, O Dugay, J Legouffe, E Delwail, V |
| TI | Front-line high-dose chemotherapy (HOT) combined with rituximab for adults with aggressive large B cell lymphoma (DLBCL). A pilot study by the GOELAMS |
| SO | JOURNAL OF CLINICAL ONCOLOGY |
| C1 | Univ Hosp, Nantes, France. Univ Hosp, Rennes, France. Hosp Bobigny, Bobigny, France. Univ Hosp, Besancon, France. Univ Hosp, Grenoble, France. Georges Pompidou European Hosp, Paris, France. Le Mans Hosp, Le Mans, France. Univ Hosp, Clermont Ferrand, France. Univ Hosp, Montpellier, France. Univ Hosp, Poitiers, France. |
| TC | 0 |
| PD | JUL 15 |
| PY | 2004 |
| VL | 22 |
| IS | 14 |
| SU | Suppl. S |
| BP | 598S |
| EP | 598S |
| UT | ISI:000223512402369 |
| ER |
| PT | J |
| AU | Silva, EN Ayala, AP Gesland, JY Moreira, RL |
| TI | Vibrational spectrum and lattice dynamics of Ky(3)F(10) single crystals |
| SO | VIBRATIONAL SPECTROSCOPY |
| AB | The infrared reflectance spectrum of KY3F10 single crystals has been recorded at room temperature. By using the four-parameter semi-quantum model, all of the infrared active phonons were identified. A normal coordinate analysis was carried out by combining these results with the previously reported Raman active phonons. The temperature dependence of the Raman bands linewidth was discussed on the basis of the eigenvectors of the vibrational modes. (C) 2004 Elsevier B.V All rights reserved. |
| C1 | Univ Fed Ceara, Dept Fis, BR-60455970 Fortaleza, Ceara, Brazil. Univ Maine Cristallogenese, UMR 6087, F-72085 Le Mans 9, France. Univ Fed Minas Gerais, Dept Fis, ICEx, BR-30123970 Belo Horizonte, MG, Brazil. |
| RP | Ayala, AP, Univ Fed Ceara, Dept Fis, Caixa Postal 6030, BR-60455970 Fortaleza, Ceara, Brazil. |
| EM | ayala@fisica.ufc.br |
| TC | 0 |
| PD | JAN 14 |
| PY | 2005 |
| VL | 37 |
| IS | 1 |
| BP | 21 |
| EP | 26 |
| UT | ISI:000226688800003 |
| ER |
| PT | J |
| AU | Depollier, C Fellah, ZE Fellah, M |
| TI | Propagation of transient acoustic waves in layered porous media: Fractional equations for the scattering operators |
| SO | NONLINEAR DYNAMICS |
| AB | Acoustic waves scattering from a rigid air-saturated porous medium is studied in the time domain. The medium is one dimensional and its physical parameters are depth dependent, i.e., the medium is layered. The loss and dispersion properties of the medium are due to the fluid-structure interaction induced by wave propagation. They are modeled by generalized susceptibility functions which express the memory effects in the propagation process. The wave equation is then a fractional telegraphist's equation. The two relevant quantities are the scattering operators-transmission and reflection operators-which give the scattered fields from the incident wave. They are obtained from Volterra equations which are fractional equations for the scattering operators. |
| C1 | Inst Phys, Phys Theor Lab, USTHB, Bab Ezzouar, Algeria. INSERM, Unite 556, F-69424 Lyon 03, France. Univ Maine, Acoust Lab, CNRS, UMR 6613, F-72085 Le Mans, France. |
| RP | Fellah, M, Inst Phys, Phys Theor Lab, USTHB, BP 32, Bab Ezzouar, Algeria. |
| EM | fellah1@yahoo.com |
| TC | 0 |
| PD | DEC |
| PY | 2004 |
| VL | 38 |
| IS | 1-4 |
| BP | 181 |
| EP | 190 |
| UT | ISI:000226667500012 |
| ER |
| PT | J |
| AU | Jaglarz, J Kassiba, A Armatys, P Pokladko, M Gondek, E Sanetra, J |
| TI | Polymeric photovoltaic devices |
| SO | MATERIALS SCIENCE-POLAND |
| AB | We present a study on photovoltaic devices based on polypyrrole ( PP) and SiC nanoparticles (similar to30 nm) in the matrix of poly(N-vinylcarbazole) (PVK). The photovoltaic cell structure was ITO/(polymer with SiC)/Ca/Al. The photophysics of such photoactive devices is based on photoinduced charge transfer from donor-type semiconducting conjugated polymers to acceptor-type SiC nanoparticles. The process mimics early photo effects in natural photosynthesis. In the general context of organic photovoltaics, polymeric materials have a cutting edge since they combine the photoelectrical properties of semiconductors with the large scale/low cost technology of polymeric materials. |
| C1 | Cracow Univ Technol, Inst Phys, PL-30084 Krakow, Poland. Univ Maine, Lab Phys Etat Condense, F-72085 Le Mans, France. AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, PL-30059 Krakow, Poland. |
| RP | Sanetra, J, Cracow Univ Technol, Inst Phys, PL-30084 Krakow, Poland. |
| EM | pusanetr@cyf-kr.edu.pl |
| TC | 0 |
| PY | 2004 |
| VL | 22 |
| IS | 4 |
| BP | 389 |
| EP | 395 |
| UT | ISI:000226576900012 |
| ER |
| PT | J |
| AU | Jaouen, L Brouard, B Atalla, N Langlois, C |
| TI | A simplified numerical model for a plate backed by a thin foam layer in the low frequency range |
| SO | JOURNAL OF SOUND AND VIBRATION |
| AB | This paper presents a simplified numerical model based on a
hierarchical trigonometric functions set to predict the low frequency
vibration behaviour of a plate backed by a thin foam layer. The base
metal plate is excited in bending vibrations with a point load and can
have various boundary conditions. The poro-elastic layer is modelled
using the mixed displacement-pressure formulation of the Biot-Allard's
theory. The base plate and the solid phase of the porous medium are
described as an equivalent visco-elastic plate. The poro-elastic's
fluid phase is coupled with the equivalent plate displacements. Comparisons with complete three-dimensional poro-elastic finite element solutions and experimental data are presented to define a domain of validation for the proposed simplified model. (C) 2003 Elsevier Ltd. All rights reserved. |
| C1 | Univ Maine, CNRS, UMR 6613, Acoust Lab, F-72085 Le Mans, France. Univ Sherbrooke, Grp Acoust, Sherbrooke, PQ J1K 2R1, Canada. |
| RP | Jaouen, L, Univ Maine, CNRS, UMR 6613, Acoust Lab, F-72085 Le Mans, France. |
| EM | luc.jaouen@univ-lemans.fr |
| TC | 0 |
| PD | FEB 23 |
| PY | 2005 |
| VL | 280 |
| IS | 3-5 |
| BP | 681 |
| EP | 698 |
| UT | ISI:000226699900011 |
| ER |
| PT | J |
| AU | Ben Adda, F Cresson, J |
| TI | Fractional differential equations and the Schrodinger equation |
| SO | APPLIED MATHEMATICS AND COMPUTATION |
| AB | In a previous paper, we defined, following a previous work of Kolvankar and Gangal, a notion of alpha-derivative, 0 < alpha < 1. In this article, we study alpha-differential equations associated to our fractional calculus. We then discuss a fundamental problem concerning the Schrodinger equation in the framework of Nottale's scale relativity theory. (C) 2004 Elsevier Inc. All rights reserved. |
| C1 | Univ Franche Comte, CNRS, UMR 6623, Equipe Math Besancon, F-2503 Besancon, France. King Fahd Univ Petr & Minerals, Hail Community Coll, Dept Math Sci, Hail, Saudi Arabia. ISMANS, F-72000 Le Mans, France. |
| RP | Cresson, J, Univ Franche Comte, CNRS, UMR 6623, Equipe Math Besancon, 16 Route Gray, F-2503 Besancon, France. |
| EM | fbenadda@kfupm.edu.sa cresson@math.univ-fcomte.fr |
| TC | 0 |
| PD | FEB 4 |
| PY | 2005 |
| VL | 161 |
| IS | 1 |
| BP | 323 |
| EP | 345 |
| UT | ISI:000226559000026 |
| ER |
| PT | J |
| AU | Bergmann, J Le Bail, A Shirley, R Zlokazov, V |
| TI | Renewed interest in powder diffraction data indexing |
| SO | ZEITSCHRIFT FUR KRISTALLOGRAPHIE |
| AB | Recently released powder indexing programs are reviewed and placed in competition with the established programs (ITO, TREOR, DICVOL, etc.) through a series of problems selected among previously unindexed ICDD entries designated as "high quality". Benchmarks are provided for testing indexing programs, based on the bethanechol chloride powder diffraction data. Applying these benchmarks leads to a classification (with respect to this specific example) of indexing programs as they face progressively more difficult situations. High data quality and the user experience to obtain it are concluded to remain the best way to indexing success, given that nearly all programs produce excellent results with excellent data. Lack of attention to data quality, even if followed by use of the most efficient programs, will usually lead to failure. It is demonstrated how not restricting oneself to a single indexing program can considerably increase the chances of success. |
| C1 | Univ Maine, Lab Fluorures, CNRS, UMR 6010, F-72085 Le Mans 9, France. Univ Surrey, Sch Human Sci, Guildford GU2 7XH, Surrey, England. FLNP, JINR, Dubna 141980, Moscow Region, Russia. |
| RP | Le Bail, A, Univ Maine, Lab Fluorures, CNRS, UMR 6010, Ave O Messian, F-72085 Le Mans 9, France. |
| EM | lebail@univ-lemans.fr |
| TC | 0 |
| PY | 2004 |
| VL | 219 |
| IS | 12 |
| BP | 783 |
| EP | 790 |
| UT | ISI:000226414200004 |
| ER |
| PT | J |
| AU | Ben Hariz, S |
| TI | Uniform CLT for empirical process |
| SO | STOCHASTIC PROCESSES AND THEIR APPLICATIONS |
| AB | Empirical processes indexed by classes of functions based on dependent
observations are considered. Sufficient conditions in order to satisfy
stochastic equicontinuity are given. The derived conditions are in
terms of bracketing numbers with respect to a norm arising from a
Rosenthal type moment inequality satisfied by the process. The
application involves m mixing IF sequences and improves on the result
of Andrews and Pollard (Inu. Statist. Rev. 62 (1) (1994) 119) for
strong mixing, Shao and Yu (Ann. Probab. 24 (4) (1996) 2098) for
rho-mixing sequences, and Csorgo and Mielniczuk (Probab. Theory Relat.
Fields 104, (1) (1996) 15) for functions of Gaussian sequences. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, Dept Math, F-72017 Le Mans, France. |
| RP | Ben Hariz, S, Univ Maine, Dept Math, Av Olivier Messiaen,BP 535, F-72017 Le Mans, France. |
| EM | Samir.Ben_Hariz@univ-lemans.fr |
| TC | 0 |
| PD | FEB |
| PY | 2005 |
| VL | 115 |
| IS | 2 |
| BP | 339 |
| EP | 358 |
| UT | ISI:000226563000007 |
| ER |
| PT | J |
| AU | Hildenbrand, A Marlin, C Conroy, A Gillot, PY Filly, A Massault, M |
| TI | Isotopic approach of rainfall and groundwater circulation in the volcanic structure of Tahiti-Nui (French Polynesia) |
| SO | JOURNAL OF HYDROLOGY |
| AB | A chemical and isotopic study was conducted on rainfall, river and spring waters from the northern half of Tahiti-Nui tropical oceanic island, in order to constrain a conceptual model of groundwater circulation within a discontinuous volcanic structure. Tahiti-Nui comprises a main shield cut by a huge landslide to the north. This major flank collapse yielded the formation of a northern depression, in which rapidly grew a second shield. Additional volcanic activity occurred along the rims of the depression, as revealed by local concentrations of dykes. The island is now volcanically inactive and is strongly dissected by erosion. Rainfall collected during a complete hydrological year at different altitudes are characterized by seasonal and altitude gradients in delta(18)O. Some of them have a deuterium excess upto +20parts per thousand, likely due to inland vapour recycling. Over the hydrological year, non-evaporated precipitation defines a mean annual delta-altitude gradient of -0.7parts per thousand/km. The mineralization and isotopic contents in river waters vary according to the geology. Rivers incising the main shield have low total mineral charges and are relatively enriched in stable isotopes (delta(18)O around-3parts per thousand vs. VSMOW), whereas rivers in the northern post-collapse in-fill exhibit greater electrical conductivity and lower delta(18)O due to the contribution of more mineralized spring water. Springs sampled at different elevations along the NW rim of the N landslide depression have homogeneous stable isotopic compositions corresponding to signature of elevated rainfall. Recharge of these springs thus occurs on a localized area, upto 1500 m above their altitude of emergence. Dominant infiltration occurs at or above the geological discontinuity between the thick impermeable base of the second shield and the late overlying fractured volcanic flows. Dykes from the peripheral part of the system are poorly active in terms of infiltration and water storage, but likely connect the underground circulations. The huge geological discontinuity between the main shield and the post-collapse edifice may also concentrate the groundwater circulation. This main resurgence likely occurs at a deep level of the northern submarine slope of Tahiti-Nui. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Paris 11, Lab Orsayterre, Orsay, France. GEGDP, Direct Equipement, Papeete, Tahiti, Fr Polynesia. Univ Paris 11, UPS IPG Paris, Leb Geochronol, Orsay, France. |
| RP | Hildenbrand, A, Univ Maine, UFR Sci & Tech, Lab Geodynam Rifts & Marges Pass, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | anthony.hildenbrand@univ-lemans.fr |
| TC | 0 |
| PD | FEB 1 |
| PY | 2005 |
| VL | 302 |
| IS | 1-4 |
| BP | 187 |
| EP | 208 |
| UT | ISI:000226396500012 |
| ER |
| PT | J |
| AU | Samran, J Phinyocheep, P Daniel, P Derouet, D Buzare, JY |
| TI | Raman spectroscopic study of non-catalytic hydrogenation of unsaturated rubbers |
| SO | JOURNAL OF RAMAN SPECTROSCOPY |
| AB | The non-catalytic hydrogenation of natural rubber (NR) and two epoxidized NRs (ENRs) i.e. ENR-22 and ENR-40 containing 22 and 40 mol% of epoxide, respectively, was carried out using p-toluenesulfonylhydrazide (TSH) as a hydrogenating agent. A two-fold molar excess of TSH compared with unsaturated units of the rubber was used. The evidence of hydrogenation is a decrease in the intensity of the characteristic signal of the carbon-carbon double bond stretching vibration of the rubber in both the Raman and FT-IR spectra. The percentage hydrogenation was successfully determined by Raman spectroscopy since the vibrational mode of the carbon-carbon unsaturation is strongly Raman active. The progress of the hydrogenation could be monitored by means of the techniques mentioned above as a function of reaction time. The maximum degree of hydrogenation of NR is similar to89% whereas in the case of ENR-22 and ENR-40 it reaches 94 and 96%, respectively. Solid-state C-13 NMR spectroscopy was also used to confirm the microstructure characteristics of the hydrogenated rubbers. C-13 NMR analysis showed that cis-trans isomerization of carbon-carbon unsaturations occur during hydrogenation. Copyright (C) 2004 John Wiley Sons, Ltd. |
| C1 | Mahidol Univ, Fac Sci, Dept Chem, Bangkok 10400, Thailand. Mahidol Univ, Inst Sci & Technol Res & Dev, Puthamonthon 73170, Nakompathom, Thailand. Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans, France. Univ Maine, CNRS, IRIM2F, FR 2575,Inst Rech Ingn Mol & Mat Fonct, F-72085 Le Mans 9, France. Univ Maine, CNRS, URM 6011, LCOM Chim Polymers,UCO2M, F-72085 Le Mans 9, France. |
| RP | Phinyocheep, P, Mahidol Univ, Fac Sci, Dept Chem, Rama 6 Rd, Bangkok 10400, Thailand. |
| EM | scppo@mahidol.ac.th |
| TC | 0 |
| PD | DEC |
| PY | 2004 |
| VL | 35 |
| IS | 12 |
| BP | 1073 |
| EP | 1080 |
| UT | ISI:000226266100009 |
| ER |
| PT | J |
| AU | Bohnke, CI Regrag, B Le Berre, F Fourquet, JL Randrianantoandro, N |
| TI | Comparison of pH sensitivity of lithium lanthanum titanate obtained by sol-gel synthesis and solid state chemistry |
| SO | SOLID STATE IONICS |
| AB | The use of the high lithium-conductive perovskite compound Li(3x)La(2/3-x)square(1/3-x)TiO(3) for the detection of H+ species in aqueous solution was investigated. The compound was synthetized by the sol-gel route and heat treatments at temperature between 800 and 1200 degreesC. LLTO was obtained with an impurity : La2Ti2O7 in low proportions at 1200 degreesC. After sintering, the ceramics were used in a pH sensitive electrode and studied by Scanning Electron Microscopy. A variation of potential in different pH-buffers was obtained with a response maximum of 28 mV/pH unit at 25 degreesC and 34 mV/pH unit at 60 degreesC for the better responding electrode. The response is poor for material obtained at 800 and 1000 degreesC. A comparison with the properties of the same material obtained by solid state reaction and after ball-milling and sintering is shown. The membrane configuration proves the ability of this perovskite to detect the variation of pH between 2 and 10. The response is not Nernstian but the sensitivity and the response time are good. The origin of the detection seems linked to a surface reaction. The detection inhibited when the electrodes are stocked in air can be retrieved by heating at temperatures higher than 40 degreesC in buffer solutions. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, Fac Tech Sci, Inst Rech Ingn Mol & Mat Fonct, F-72085 Le Mans 09, France. |
| RP | Bohnke, CI, CNRS, UMR 6010, Fac Sci, Lab Fluorures, Ave O Messeiaen, F-72085 Le Mans, France. |
| EM | claude.bohnke@univ-lemans.fr |
| TC | 0 |
| PD | JAN 14 |
| PY | 2005 |
| VL | 176 |
| IS | 1-2 |
| BP | 73 |
| EP | 80 |
| UT | ISI:000226020900011 |
| ER |
| PT | J |
| AU | Molinier, O |
| TI | Etiopathogenic factors of asthma |
| SO | REVUE DES MALADIES RESPIRATOIRES |
| C1 | Ctr Hosp, Serv Pneumol, F-72037 Le Mans, France. |
| RP | Molinier, O, Ctr Hosp, Serv Pneumol, F-72037 Le Mans, France. |
| TC | 0 |
| PD | NOV |
| PY | 2004 |
| VL | 21 |
| IS | 5 |
| PN | Part 2 Suppl. S |
| BP | S49 |
| EP | S52 |
| UT | ISI:000225946400015 |
| ER |
| PT | J |
| AU | Tournat, V Gusev, VE Castagnede, B |
| TI | Self-demodulation of elastic waves in a one-dimensional granular chain |
| SO | PHYSICAL REVIEW E |
| AB | The self-demodulation process in a nonlinear granular chain of identical beads is studied analytically and numerically. In such a medium, in accordance with the dispersion relation, longitudinal waves that have a frequency higher than the so-called cutoff frequency of the chain are evanescent. Hem we study the influence on the self-demodulation process of the transition from the propagative to the evanescent regime in pump wave propagation that takes place when the pump frequency increases. An analytical solution in discrete coordinates is derived for the case of two primary frequencies mixing into a single difference frequency. This solution is then numerically integrated in order to analyze the demodulation of the acoustic wave packet (i.e., of the harmonic acoustic wave modulated in a pulse mode). Temporal demodulated profiles can be strongly sensitive to the regime (propagative or evanescent) of primary wave transport. This model allows us to detect the cutoff frequency of longitudinal elastic waves in the chain. without receiving the primary waves. but receiving the low frequency nonlinearly radiated signal. The roles of frequency dependent attenuation. velocity dispersion. and observation distance are analyzed. |
| C1 | Univ Maine, F-72085 Le Mans 9, France. |
| RP | Tournat, V, Univ Maine, Ave Olivier Messiaen, F-72085 Le Mans 9, France. |
| EM | vincent.tournat@univ-lemans.fr |
| TC | 0 |
| PD | NOV |
| PY | 2004 |
| VL | 70 |
| IS | 5 |
| PN | Part 2 |
| AR | 056603 |
| UT | ISI:000225970700102 |
| ER |
| PT | J |
| AU | Miglierini, M Degmova, J Kanuch, T Greneche, JM |
| TI | Temperature dependence of magnetic microstructure in Fe76Mo8Cu1B15 nanocrystalline alloy |
| SO | PHYSICA STATUS SOLIDI A-APPLIED RESEARCH |
| AB | Fe76Mo8Cu1B15 nanocrystalline alloy featuring close-to-room Curie temperature of 310K proves to be suitable for model case studies of complexity of magnetic interactions. Annealed samples with different contents of nanocrystallites are characterized by Fe-57 transmission Mossbauer spectrometry performed in a wide temperature range (77-673 K). The validity of the temperature dependences of hyperfine parameters is discussed for all structural components including amorphous residual phase, bee Fe nanocrystals and interface regions located in between the former two. Cautions which must be considered in deriving information about their relative contents are pointed out, because of the presence of static and dynamic effects at high temperatures due to non-interacting and weakly interacting single domain ferromagnetic grains dispersed into a paramagnetic amorphous matrix. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| C1 | Slovak Univ Technol, Dept Nucl Phys & Technol, Bratislava 81219, Slovakia. Univ Maine, Lab Phys Etat Condense, UMR 6087, CNRS,Fac Sci, F-72085 Le Mans 9, France. |
| RP | Miglierini, M, Slovak Univ Technol, Dept Nucl Phys & Technol, Ilkovicova 3, Bratislava 81219, Slovakia. |
| EM | bruno@elf.stuba.sk |
| TC | 0 |
| PD | DEC |
| PY | 2004 |
| VL | 201 |
| IS | 15 |
| BP | 3280 |
| EP | 3284 |
| UT | ISI:000226038200011 |
| ER |
| PT | J |
| AU | Restrepo, J Greneche, JM Gonzalez, JM |
| TI | Finite size effects and spin transition in ball-milled gamma-(FeMn)(30)Cu-70 nanostructured alloys |
| SO | PHYSICA B-CONDENSED MATTER |
| AB | Fe15Mn15Cu70 alloys were prepared by high-energy ball milling over a wide range of grinding times from 15 min to 72h. The corresponding magnetic properties were followed by means of vibrating sample magnetometry, magnetic susceptibility and Mossbauer spectroscopy. By using a Rietveld structural analysis of high-resolution X-ray diffraction data, lattice parameter and grain size correlations with magnetization and coercive force were carried out. Results revealed a strong microstructural dependence of the magnetic properties with the grain size, resembling a finite size-driven magnetic transition at a critical crystallite value of around 8.5 nm. This behavior is endorsed by a partial low- to high-spin transition according to isomer shift results, at a critical unit-cell volume of around 50 Angstrom(3) at 77 K attributed to strong local variations of the interatomic spacing as a consequence of the employed ball-milling procedure. Finally, as concerns to temperature behavior, samples exhibited a freezing temperature at around 61 K and a wide distribution of relaxation times ascribed to the presence of interacting CuMn and FeMnCu clusters. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Antioquia, Inst Fis, Grp Estado Solido, Medellin 1226, Colombia. Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans 9, France. Inst Magnetismo Aplicado, Madrid 28230, Spain. |
| RP | Restrepo, J, Univ Antioquia, Inst Fis, Grp Estado Solido, Medellin 1226, Colombia. |
| EM | jrestre@fisica.udea.edu.co |
| TC | 0 |
| PD | DEC 31 |
| PY | 2004 |
| VL | 354 |
| IS | 1-4 |
| BP | 174 |
| EP | 182 |
| UT | ISI:000226101400039 |
| ER |
| PT | J |
| AU | Garcia, KE Morales, AL Barrero, CA Arroyave, CE Greneche, JM |
| TI | Magnetic and crystal structure refinement in akaganeite nanoparticle |
| SO | PHYSICA B-CONDENSED MATTER |
| AB | Preliminary assignments of the low-temperature Mossbauer signals obtained by taking into account a monoclinic structure for the akaganeite are presented. A powder sample was prepared by thermal hydrolysis of 0.1 M FeCl3 solutions at 70 degreesC during 48 h according to the literature. X-ray diffraction demonstrates the purity of the synthetic sample. The X-ray pattern was adequately adjusted by using the monoclinic space group (C2/m:b3) with a = 10.5422(6) Angstrom, b = 3.0349(1) Angstrom, c= 10.5259(6) Angstrom and beta = 90.1133(5)degrees. The average grain size is estimated to be about 46(6) rim. The monoclinic symmetry requires the existence of two distinct iron octahedral sites, which is also confirmed by the Mossbauer spectra in the paramagnetic state. However, detailed computer analysis of Mossbauer spectra in the magnetic state suggests the presence of four non-equivalent iron sites. The physical origin of these different components in the magnetic region is discussed based upon the monoclinic structure. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Antioquia, Inst Fis, Grp Estado Solido, Medellin, Colombia. Univ Antioquia, Fac Ingn, Grp Corros & Protecc, Medellin, Colombia. Univ Maine, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans 9, France. |
| RP | Barrero, CA, Univ Antioquia, Inst Fis, Grp Estado Solido, AA 1226, Medellin, Colombia. |
| EM | cbarrero@fisica.udea.edu.co |
| TC | 0 |
| PD | DEC 31 |
| PY | 2004 |
| VL | 354 |
| IS | 1-4 |
| BP | 187 |
| EP | 190 |
| UT | ISI:000226101400041 |
| ER |
| PT | J |
| AU | Ecotiere, D Tahani, N Bruneau, M |
| TI | Inertial coupling of resonant normal modes in rotating cavities: Acoustic gyrometers for high rotation rates |
| SO | ACTA ACUSTICA UNITED WITH ACUSTICA |
| AB | For steady rotations, acoustic rate gyros involve inertial coupling between acoustic modes inside rotating cylindrical fluid-filled resonant cavities. Previous studies investigated acoustic rate gyros of small dimensions (using silicon technology) and high dynamic range for measurement of transient or stationary rotation rates (from 0.01 degrees/s up to 1000 degrees/s), which can be applied to a wide variety of applications. Herein investigated are very high rotation rates (up to 105 degrees/s) and the phenomena they cause, namely the effects of the non uniformity of the fluid on the acoustic field inside the rotating cavity and the effects of the recurrent inertial coupling between the preponderant acoustic modes. Results of measurements confirm the analytical predictions and requirements for designing rapidly spinning gyrometers behaving linearly are discussed. |
| C1 | Univ Maine, Acoust Lab, CNRS, UMR 6613, F-72085 Le Mans, France. |
| RP | Bruneau, M, Univ Maine, Acoust Lab, CNRS, UMR 6613, Av O Messiaen, F-72085 Le Mans, France. |
| EM | michel.bruneau@univ-lemans.fr |
| TC | 0 |
| PD | NOV-DEC |
| PY | 2004 |
| VL | 90 |
| IS | 6 |
| BP | 1151 |
| EP | 1158 |
| UT | ISI:000226153700014 |
| ER |
| PT | J |
| AU | Ollivier, S Dalmont, JP Kergomard, J |
| TI | Idealized models of reed woodwinds. Part I: Analogy with the bowed string |
| SO | ACTA ACUSTICA UNITED WITH ACUSTICA |
| AB | Elementary models of the bowed string and of woodwinds are reviewed in order to underline their analogy. The comparison of the pressure-flow characteristics of a woodwind with the friction characteristics of a bowed string shows that the mouth pressure and the bow velocity on the one hand, and a static flow parameter for the embouchure and the static force applied by the instrumentalist perpendicularly to the motion of the string on the other hand are analogous parameters. Using idealized resonators, conical resonators are found to be analogous to a string bowed elsewhere than at the middle, the position of the bow being analogous to the length of the truncation of the conical tube. A consequence of these analogies is that idealized woodwinds can be modeled with two reflection functions like a bowed string, and that some references dealing with the bowed string can be useful to study reed woodwinds. The behaviour of common solutions, including the Helmholtz motion, is finally detailed within the scope of Raman's model applied to woodwinds. |
| C1 | Univ Maine, Acoust Lab, CNRS, UMR 6613, F-72085 Le Mans 9, France. CNRS, Lab Acoust & Mecan, UPR 7051, F-13402 Marseille, France. |
| RP | Ollivier, S, Ecole Cent Lyon, Lab Mecan Fluides & Acoust, CNRS, UMR 5509, 36 Ave Guy de Colongue, F-69134 Ecully, France. |
| EM | sebastien.ollivier@ec-lyon.fr |
| TC | 0 |
| PD | NOV-DEC |
| PY | 2004 |
| VL | 90 |
| IS | 6 |
| BP | 1192 |
| EP | 1203 |
| UT | ISI:000226153700019 |
| ER |
| PT | J |
| AU | Hardivillier, A Leignel, V Denis, F Uguen, G Cosson, R Laulier, M |
| TI | Do organisms living around hydrothermal vent sites contain specific metallothioneins? The case of the genus Bathymodiolus (Bivalvia, Mytilidae) |
| SO | COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY |
| AB | The unusual characteristics of the hydrothermal vent environment (high pressure and metal concentrations, low pH, etc.) leads us to wonder how species living in this particular biotope have adjusted to these severe living conditions. To investigate the consequences of high metal concentrations, filter-feeding organisms are commonly used in ecotoxicological studies. Metallothioneins (MTs) are proteins conserved throughout the animal kingdom and involved in intracellular metal regulation Therefore, we tried here to find out whether the metallothioneins of hydrothermal bivalves are different from those of coastal bivalves. The characterization of DNA sequences coding MTS from some of the most common hydrothermal bivalves, belonging to the genus Bathymodiolus (Mytilidae) was performed by reverse transcription polymerase chain reactions (RT-PCRs). The complementary DNAs (cDNAs) of MT-10 and MT-20 isoforms were obtained for the Atlantic and Pacific hydrothermal mussels (Bathymodiolus azoricus and Bathymodiolus thermophilus). The MT-10 transcripts were 222 nucleotides long and the MT-20 transcripts, 207 nucleotides. The polymorphism of the NIT cDNAs in these two hydrothermal species is discussed. The comparison between metallothionein cDNA sequences of the Mytilus and the Bathymodiolus genera shows strong homologies among metallothioneins of coastal and hydrothermal mussels. (C) 2004 Elsevier Inc. All rights reserved. |
| C1 | Univ Maine, Biol & Genet Evolut Lab, F-72085 Le Mans, France. Univ Nantes, ISOMer, UPRES, EA 2663,Lab Biol Marine, F-44322 Nantes 3, France. |
| RP | Hardivillier, A, Univ Maine, Biol & Genet Evolut Lab, Ave Olivier Messiaen, F-72085 Le Mans, France. |
| EM | yann.hardivillier@univ-lemans.fr |
| TC | 0 |
| PD | OCT |
| PY | 2004 |
| VL | 139 |
| IS | 1-3 |
| BP | 111 |
| EP | 118 |
| UT | ISI:000225911700014 |
| ER |
| PT | J |
| AU | Jonas, AM Peralta, S Habib-Jiwan, JL Nicol, E |
| TI | Nano-compartmentalized multi-functional polyelectrolyte multilayers. |
| SO | ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY |
| C1 | Univ Catholique Louvain, Dept Mat Sci & Proc, B-1348 Louvain, Belgium. Univ Catholique Louvain, Dept Chem, B-1348 Louvain, Belgium. Univ Maine, UMR 6120, CNRS, Le Mans, France. |
| EM | jonas@poly.ucl.ac.be |
| TC | 0 |
| PD | MAR 28 |
| PY | 2004 |
| VL | 227 |
| PN | Part 2 |
| BP | U500 |
| EP | U500 |
| UT | ISI:000223655702530 |
| ER |
| PT | J |
| AU | Konold, T Bone, G Ryder, S Hawkins, SAC Courtin, F Berthelin-Baker, C |
| TI | Clinical findings in 78 suspected cases of bovine spongiform encephalopathy in Great Britain |
| SO | VETERINARY RECORD |
| AB | The clinical findings in 59 cows with bovine spongiform encephalopathy (BSE) were compared with those in 19 cattle that were submitted as BSE suspects but not confirmed by immunohistochemistry. Both groups were also compared with a control group of 20 healthy cows. Abnormalities in behaviour, temperament, mental status and activity, neurogenic disorders of gait and hyperreactivity to touch were frequently observed in the cattle with BSE. Not every animal with BSE displayed clinical signs in all these categories, and the severity of the signs was not always useful for differentiating them from the BSE suspects that were not confirmed by pathology. The neurological examination was better than passive observations for the clinical diagnosis Of BSE. Tests of the animals' responses to sudden auditory, visual and tactile stimuli were very useful for distinguishing cases Of BSE from unconfirmed BSE suspects if the cases did not display signs in all the categories. |
| C1 | Vet Labs Agcy, Addlestone KT15 3NB, Surrey, England. Lab Dept Sarthe, F-72018 Le Mans, France. |
| RP | Konold, T, Vet Labs Agcy, Addlestone KT15 3NB, Surrey, England. |
| TC | 0 |
| PD | NOV 20 |
| PY | 2004 |
| VL | 155 |
| IS | 21 |
| BP | 659 |
| EP | 666 |
| UT | ISI:000225720300007 |
| ER |
| PT | J |
| AU | Dakhlaoui, A Toumi, M Smiri, LS Bulou, A |
| TI | Infrared and polarized Raman spectra of a noncentrosymmetric compound "sodium samarium fluorosilicate" NaSmSiO4 center dot 0.25NaF |
| SO | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY |
| AB | Chemical preparation, infrared and Raman spectra of sodium samarium fluorosilicate, NaSMSiO(4)(.)0.25NaF are presented. The spectra are analyzed with regard to the symmetry, and the numbers of the SiO44- internal vibrational modes observed in the Raman and infrared spectra are consistent with the predictions. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Fac Sci Bizerte, Lab Chim Inorgan & Structurale, Jarzouna 7021, Tunisia. Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense,Fac Sci, F-72085 Le Mans 09, France. |
| RP | Smiri, LS, Fac Sci Bizerte, Lab Chim Inorgan & Structurale, Jarzouna 7021, Tunisia. |
| EM | leila.smiri@fsb.rnu.tn |
| TC | 0 |
| PD | JAN |
| PY | 2005 |
| VL | 61 |
| IS | 1-2 |
| BP | 193 |
| EP | 198 |
| UT | ISI:000225612300025 |
| ER |
| PT | J |
| AU | Phinyocheep, P Phetphaisit, CW Derouet, D Carnpistron, I Brosse, JC |
| TI | Chemical degradation of epoxidized natural rubber using periodic acid: Preparation of epoxidized liquid natural rubber |
| SO | JOURNAL OF APPLIED POLYMER SCIENCE |
| AB | Oxidative degradation of epoxidized natural rubber (ENR) was effectively performed in latex phase by using periodic acid at 30degreesC. The ENR was prepared from the epoxidation of natural rubber in latex phase using performic acid generated in situ by the reaction of hydrogen peroxide and formic acid. The prepared ENR latex was subsequently treated with periodic acid. It was found that the higher the amount of the periodic acid employed the faster the molecular weight of the ENR decreased. Different epoxidation levels of the ENR had no significant effect on the degradation reaction. Based on H-1 NMR analysis, the epoxide content in the epoxidized liquid natural rubber (ELNR) obtained was about the same as that observed in the ENR before degradation. FT-IR analysis showed an increase in carbonyl signal after prolonged reaction time or when higher amounts of periodic acid were employed. (C) 2004 Wiley Periodicals, Inc. |
| C1 | Mahidol Univ, Fac Sci, Dept Chem, Bangkok 10700, Thailand. Mahidol Univ, Inst Sci & Technol Res & Dev, Nakhon Pathom 73170, Thailand. Univ Maine, CNRS, UMR 6011, Lab Chim Organ Macromol Chim Polymeres, F-72085 Le Mans, France. |
| RP | Phinyocheep, P, Mahidol Univ, Fac Sci, Dept Chem, Rama 6 Rd, Bangkok 10700, Thailand. |
| EM | scppo@mahidol.ac.th |
| TC | 0 |
| PD | JAN 5 |
| PY | 2005 |
| VL | 95 |
| IS | 1 |
| BP | 6 |
| EP | 15 |
| UT | ISI:000225552000003 |
| ER |
| PT | J |
| AU | Samran, J Phinyocheep, P Daniel, P Kittipoom, S |
| TI | Hydrogenation of unsaturated rubbers using diimide as a reducing agent |
| SO | JOURNAL OF APPLIED POLYMER SCIENCE |
| AB | The hydrogenation of natural rubber (NR) and various epoxidized natural rubbers (ENR) was investigated by using diimide generated in situ from the thermal decomposition of p-toluenesulfonylhydrazide (TSH) in o-xylene solution at 135degreesC. H-1-NMR analysis indicated that approximately 85-95% of hydrogenation was performed with a twofold excess of TSH. FT-IR and Raman spectroscopy were employed to confirm the microstructure characteristics of the hydrogenated rubbers. The cis-trans isomerization was also observed by H-1- and C-13-NMR. The signal in H-1-NMR of the epoxide group of the ENR disappears after hydrogenation while the signal of the opened epoxide ring product was detected. This may be due to the epoxide ring opening reaction caused by the p-toluenesulfinic acid by-product. The high temperature of the reaction condition leads to chain degradation in both NR and ENR. Thermal behaviors of the hydrogenated rubbers characterized by differential scanning calorimetry showed that the glass transition temperatures of the hydrogenated rubbers were increased about 10-20degreesC compared with the starting rubbers. (C) 2004 Wiley Periodicals, Inc. |
| C1 | Mahidol Univ, Fac Sci, Dept Chem, Bangkok 10400, Thailand. Mahidol Univ, Inst Sci & Technol Res & Dev, Nakhon Pathom 73170, Thailand. Univ Maine, CNRS, UMR 6087, LPEC, F-72085 Le Mans, France. |
| RP | Phinyocheep, P, Mahidol Univ, Fac Sci, Dept Chem, Rama VI Rd, Bangkok 10400, Thailand. |
| EM | scppo@mahidol.ac.th |
| TC | 0 |
| PD | JAN 5 |
| PY | 2005 |
| VL | 95 |
| IS | 1 |
| BP | 16 |
| EP | 27 |
| UT | ISI:000225552000004 |
| ER |
| PT | J |
| AU | Derouet, D Mulder-Houdayer, S Brosse, JC |
| TI | Chemical modification of polydienes in latex medium: Study of epoxidation and ring opening of oxiranes |
| SO | JOURNAL OF APPLIED POLYMER SCIENCE |
| AB | Referring to previous work carried out in organic solvents, a study of the action of nucleophilic reagents on epoxidized units of 1,4-epoxidized polyisoprene (synthetic polyisoprene or natural rubber) was performed in latex medium. Among the considered reagents, dialkylphosphate and ammonium diethyldithiophosphate demonstrated the ability to add under these reaction conditions on epoxidized units according to a SN2 substitution with an oxirane ring-opening mechanism. A systematic study was performed with dibutylphosphate that was shown to be very reactive. Grafting of phosphorated groups along polyisoprene chains was carried out via reaction of the acidic function (P-OH) of the phosphate with oxirane rings previously created on a 1,4-polyisoprene backbone. The prominent role of latex pH on the reaction was shown. (C) 2004 Wiley Periodicals, Inc. |
| C1 | Univ Maine, LCOM, CNRS, UMR N6011,UCO2M,Fac Sci, F-72085 Le Mans 9, France. |
| RP | Derouet, D, Univ Maine, LCOM, CNRS, UMR N6011,UCO2M,Fac Sci, Ave Olivier Messiaen, F-72085 Le Mans 9, France. |
| EM | Daniel.Derouet@univ_lemans.fr |
| TC | 0 |
| PD | JAN 5 |
| PY | 2005 |
| VL | 95 |
| IS | 1 |
| BP | 39 |
| EP | 52 |
| UT | ISI:000225552000006 |
| ER |
| PT | J |
| AU | Lado-Tourino, I Tsobnang, F |
| TI | O interstitial energetics in Ti from ab initio calculations |
| SO | COMPUTATIONAL MATERIALS SCIENCE |
| AB | Ti-porcelain systems have been used in prosthetic dentistry since 1980. The chemical bonding in this kind of systems is generally attributed to oxidic compounds. The porcelain functions as an O donator and stoichiometric and nonstoichiometric titanium oxides are formed at the interface. These oxides result in substantial distortion of the crystalline structure and failure of bonding. A useful technique for surface conditioning is the silicon-ion implantation, which results in the formation of a metal-silicon zone protecting against O diffusion. In dental materials technology, processes on the atomic scale have been investigated insufficiently or not at all. In this work, we present ab initio calculations on the energetics of an O interstitial in a Ti crystal. The aim of our study is getting new insight into the atomic scale properties of these Ti-porcelain systems. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Europea Madrid, Dept Chem & Mat, Madrid 28670, Spain. Inst Super Mat Mans, F-72000 Le Mans, France. |
| RP | Lado-Tourino, I, Univ Europea Madrid, Dept Chem & Mat, C Tajo S-N, Madrid 28670, Spain. |
| EM | misabel.lado@oi.ind.uem.es ftsobnang@ismans.univ-lemans.fr |
| TC | 0 |
| PD | JAN |
| PY | 2005 |
| VL | 32 |
| IS | 1 |
| BP | 13 |
| EP | 19 |
| UT | ISI:000225631900002 |
| ER |
| PT | J |
| AU | Pham, QN Bohnke, C Bohnke, O |
| TI | Effect of surface treatments on Li(0.30)Ln(0.57)TiO(3) (Ln = La, Nd) perovskite ceramics: an X-ray photoelectron spectroscopy study |
| SO | SURFACE SCIENCE |
| AB | To explain the sensitivity of some titanate ceramics to pH variation in aqueous solutions, the lithium lanthanum titanate (LLTO) and lithium neodymium titanate (NLTO) surfaces were analysed by X-ray photoelectron spectroscopy. The surface of LLTO was modified by chemical treatments and sputtering. XPS spectrum of LLTO exhibits the peaks of lanthanum (La 3d(3/2), La 3d(5/2), La 4p, La 4d), titanium (Ti 2p(1/2), Ti 2P(3/2)) and oxygen (O 1s). However, the immersion of the ceramic in sodium hydroxide or surface sputtering affect mainly the narrow-scan spectra of oxygen (O 1s). This study reveals that an acido-basic reaction takes place in the neighbourhood of the TiO6 octahedra of the perovskite. The results also suggest that hydroxyl species may associate with lanthanum. Furthermore, the study on C Is line rules out the assumption that CO32- species are involved in the pH detection. (C) 2004 Elsevier B.V. All rights reserved. |
| C1 | Univ Maine, UMR 6010,CNRS, FR CNRS 2575,Lab Oxydes & Flurures, Inst Rech Ingn Mol & Mat Fonct, F-72085 Le Mans 09, France. |
| RP | Pham, QN, Univ Maine, UMR 6010,CNRS, FR CNRS 2575,Lab Oxydes & Flurures, Inst Rech Ingn Mol & Mat Fonct, Ave O Messiaen, F-72085 Le Mans 09, France. |
| EM | quoc_nghi.pham.etu@univ-lemans.fr |
| TC | 0 |
| PD | NOV 20 |
| PY | 2004 |
| VL | 572 |
| IS | 2-3 |
| BP | 375 |
| EP | 384 |
| UT | ISI:000225425900027 |
| ER |
| PT | J |
| AU | Ben Ali, A Maisonneuve, V Houlbert, S Silly, G Buzare, JY Leblanc, M |
| TI | Cation and anion disorder in new cubic rare earth carbonates Na(2)LiLn(CO3)(3) (Ln = Eu-Er, Yb, Lu, Y); synthesis, crystal structures, IR, Raman and NMR characterizations |
| SO | SOLID STATE SCIENCES |
| AB | New sodium lithium rare earth carbonates Na(2)LiLn(CO3)(3) (Ln = Eu-Er, Yb, Lu, Y) are prepared by hydrothermal synthesis and characterized by single crystal X-ray diffraction, thermal analysis, IR, Raman and NMR spectroscopy. Crystal cells are cubic, a approximate to 14.4 Angstrom, space group Fd (3) over barm (No. 227), Z = 16. For Na2LiYb(CO3)(3), refinements yield R(F-2) = 0.068 and R-w(F-2) = 0.202 for 235 unique reflections. The structures are built up from [Li(1)O-6] Octahedra, [Li(2)O-4] tetrahedra and [(Na(2/3)Ln(1/3))O-8] polyhedra. NMR spectroscopy shows that Li+ cations are disordered and present a high mobility in their tetrahedral and octahedral coordination polyhedra. Na+ and Ln(3+) cations are also disordered: however, Na+ cations adopt preferentially a six-fold coordination. Crystals of Na2LiEu(CO3)(3) are highly resistive. Raman and IR lines. associated with carbonate group vibrations, are very broad. Structural correlations exist with Na3Mg(CO3)(2)Cl northupite and AB(2)X(6) pyrochlores. (C) 2004 Elsevier SAS. All rights reserved. |
| C1 | Univ Maine, Fac Sci, Inst Rech Ingn Mol & Mat Fonct, CNRS,FR 2575,UMR 6010,Lab Oxydes & Fluorures, F-72085 Le Mans 9, France. Fac Sci Bizerte, Lab Chim Inorgan & Struct, Jarzouna, Tunisia. Univ Maine, Fac Sci, CNRS,UMR 6087,Lab Phys Etat Condense, FR 2575,Inst Rech Ingn Mol & Mat Fonct, F-72085 Le Mans, France. |
| RP | Leblanc, M, Univ Maine, Fac Sci, Inst Rech Ingn Mol & Mat Fonct, CNRS,FR 2575,UMR 6010,Lab Oxydes & Fluorures, Ave O Messiaen, F-72085 Le Mans 9, France. |
| EM | marc.leblanc@univ-lemans.fr |
| TC | 0 |
| PD | NOV |
| PY | 2004 |
| VL | 6 |
| IS | 11 |
| BP | 1237 |
| EP | 1243 |
| UT | ISI:000225527700008 |
| ER |
| PT | J |
| AU | Le Berre, F Crosnier-Lopez, MP Laligant, Y Suard, E Bohnke, O Emery, J Fourquet, JL |
| TI | Li+ ionic conduction in the layered perovskite Li2La2/3Ta2O7 |
| SO | JOURNAL OF MATERIALS CHEMISTRY |
| AB | The Li+ ionic conduction properties of the Li2La2/3Ta2O7 layered perovskite compound have been investigated by complementary techniques: impedance spectroscopy, Li-7 NMR and thermal neutron powder diffraction. Up to 770 K, the results are consistent with an electrical conductivity dominated by Li+ ions jumping between Li1 and Li2 sites, the adjacent centers of the two kinds of LiO4 tetrahedra constituting the interlayer region of the structure. The sudden event, observed near 770 K on the curve log(sigmaT) = f(1000/T), is associated with significant changes to the Li-7 NMR signal and to a structural modification followed by neutron powder diffraction up to 973 K. All these facts are consistent with the displacement at 770 K of the lithium ions residing in the Li1 sites. Neutron powder diffraction showed that, in the interlayer region, the location of the lithium ions in the Li2 sites remains unchanged. However, 17% of the Li1 population leaves its tetrahedral position to occupy a new Li3 site inside the perovskite cages, very close to their four O2- bottlenecks. The other Li+ ions (83%) remain in the interlayer but their coordination changes from tetrahedral to a five fold one. |
| C1 | Univ Maine, CNRS, FR 2575, Inst Rech Ingn Mol & Mat Fonct, F-72085 Le Mans 9, France. CNRS, UMR 6010, Lab Oxydes & Fluorures, F-72085 Le Mans, France. Univ Maine, CNRS, UMR 6087, Lab Phys Etat Condense, F-72085 Le Mans 9, France. Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France. |
| RP | Le Berre, F, Univ Maine, CNRS, FR 2575, Inst Rech Ingn Mol & Mat Fonct, Ave O Messiaen, F-72085 Le Mans 9, France. |
| TC | 0 |
| PY | 2004 |
| VL | 14 |
| IS | 24 |
| BP | 3558 |
| EP | 3565 |
| UT | ISI:000225538400013 |
| ER |
| PT | J |
| AU | Gazengel, B Poggi, S |
| TI | Measurement of acoustic particle velocities in enclosed sound field: Assessment of two Laser Doppler Velocimetry measuring systems |
| SO | APPLIED ACOUSTICS |
| AB | The performances of two Laser Doppler Velocimetry (LDV) systems adapted for measuring the acoustic particle velocities are assessed in enclosed sound field. This assessment is performed by comparing the acoustic velocities measured by means of LDV to reference acoustic velocities estimated from sound pressure measurements. The two LDV systems are based on a single optical bench which delivers an optical signal called Doppler signal. The Doppler signal, which is frequency modulated, is analyzed by means of two signal processing systems, the BSA (Burst Spectrum Analyser from Dantec) on the one hand, and a system specifically developed for the estimation of the acoustic velocity on the other hand. Once the experimental setup has been optimized for minimizing the errors made on the reference velocities, the assessment is perfonned and shows that both systems can measure the acoustic velocity in enclosed field in two the frequency ranges [0-4 kHz] and [0-2 kHz] respectively for acoustic velocity amplitudes of 10 mm/s and 1 mm/s. (C) 2004 Elsevier Ltd. All rights reserved. |
| C1 | Univ Maine, CNRS, UMR 6613, Lab Acoust, F-72085 Le Mans 9, France. |
| RP | Gazengel, B, Univ Maine, CNRS, UMR 6613, Lab Acoust, Av O Messiaen, F-72085 Le Mans 9, France. |
| EM | bruno.gazengel@univ-lemans.fr |
| TC | 0 |
| PD | JAN |
| PY | 2005 |
| VL | 66 |
| IS | 1 |
| BP | 15 |
| EP | 44 |
| UT | ISI:000225525400002 |
| ER |