FN	ISI Export Format
VR	1.0

PT	J
AU	TORRANCE, JB LACORRE, P NAZZAL, AI ANSALDO, EJ NIEDERMAYER, C
TI	SYSTEMATIC STUDY OF INSULATOR-METAL TRANSITIONS IN PEROVSKITES RNIO3 (R = PR, ND, SM, EU) DUE TO CLOSING OF CHARGE-TRANSFER GAP
SO	PHYSICAL REVIEW B
AB	The detailed behavior of the phase transitions was mapped out for the series RNiO3 as a function of the rare earth (R). A sharp insulator-metal transition is observed, which depends strongly on R. For small R it occurs at a higher temperature than the antiferromagnetic ordering (measured by muonspin relaxation). By increasing either the temperature or the size of R, an insulator-metal transition is observed, most probably caused by the closing of the charge-transfer gap, induced by an increase in the electronic bandwidth.
C1	UNIV SASKATCHEWAN,DEPT PHYS,SASKATOON S7N 0W0,SASKATCHEWAN,CANADA. UNIV CONSTANCE,FAK PHYS,W-7750 CONSTANCE,GERMANY. UNIV MAINE,FAC SCI,FLUORURES LAB,F-72017 LE MANS,FRANCE.
RP	TORRANCE, JB, IBM CORP,DIV RES,ALMADEN RES CTR,650 HARRY RD,SAN JOSE,CA 95120.
TC	298
PD	APR 1
PY	1992
VL	45
IS	14
BP	8209
EP	8212
UT	ISI:A1992HN47700084
ER

PT	J
AU	GARCIAMUNOZ, JL RODRIGUEZCARVAJAL, J LACORRE, P TORRANCE, JB
TI	NEUTRON-DIFFRACTION STUDY OF RNIO3 (R = LA,PR,ND,SM) - ELECTRONICALLY INDUCED STRUCTURAL-CHANGES ACROSS THE METAL-INSULATOR-TRANSITION
SO	PHYSICAL REVIEW B
AB	In the R NiO3 series (R = La,Pr,Nd,Sm), the metal-insulator (M-I) transition temperature rises systematically as the size of the rare earth decreases and as the subsequent distortion from the ideal cubic perovskite increases. For R = La the system keeps its metallic character down to 1.5 K, while for R =Pr, Nd, and Sm electronic localization occurs at 135, 200, and 400 K, respectively. High-resolution neutron-powder-diffraction experiments have been performed to investigate the structural anomalies across the first-order M-I transition in the orthorhombic PrNiO3 and NdNiO3 compounds. The cell volume undergoes a subtle increase when the compounds become insulating, due to a slight increase of the Ni-O distances. This effect is accompanied by coupled tilts Of NiO6 octahedra, which imply changes in the Ni-O-Ni angles (DELTA-THETA-O-Ni-O almost-equal-to -0.5-degrees) governing the transfer integral between Ni e(g) and 0 2p orbitals. These changes are sterically driven by the observed increase of the nickel-oxygen distances (DELTA-d Ni-O almost-equal-to +0.004 angstrom) in the insulating (low-temperature) phase. The results of valence-bond calculations suggest the existence of Ni3+(d7) and R3+ states for nickel and rare earth.
C1	UNIV MAINE,FLUORURES LAB,F-72017 LE MANS,FRANCE. IBM CORP,DIV RES,ALMADEN RES CTR,SAN JOSE,CA 95120.
RP	GARCIAMUNOZ, JL, INST MAX VON LAUE PAUL LANGEVIN,156 X,F-38042 GRENOBLE,FRANCE.
TC	169
PD	AUG 15
PY	1992
VL	46
IS	8
BP	4414
EP	4425
UT	ISI:A1992JK72500004
ER

PT	J
AU	ALLARD, JF CHAMPOUX, Y
TI	NEW EMPIRICAL EQUATIONS FOR SOUND-PROPAGATION IN RIGID FRAME FIBROUS MATERIALS
SO	JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
AB	New expressions are given that can be used instead of the phenomenological equations of Delany and Bazley. They provide similar predictions in the range of validity of these equations, and in addition are valid at low frequencies where the equations of Delany and Bazley provide unphysical predictions. These new expressions have been worked out by using the general frequency dependence of the viscous forces in porous materials proposed by Johnson et al. [J. Fluid Mech. 176, 379 ( 1987)], with a transposition carried out to predict the dynamic bulk modulus of air. The model used suggests how sound propagation in fibrous materials can depend both on the diameter of the fibers and on the density of the material.
C1	UNIV SHERBROOKE,FAC SCI APPL,SHERBROOKE J1K 2R1,QUEBEC,CANADA.
RP	ALLARD, JF, FAC SCI MANS,CNRS,UA 1101,ACOUST LAB,ROUTE LAVAL,BP 535,F-72017 LE MANS,FRANCE.
TC	57
PD	JUN
PY	1992
VL	91
IS	6
BP	3346
EP	3353
UT	ISI:A1992HX65500026
ER

PT	J
AU	LOISEAU, T FEREY, G
TI	SYNTHESIS AND X-RAY STRUCTURAL CHARACTERIZATION OF A NOVEL OXYFLUORINATED MICROPOROUS GALLIUM PHOSPHATE WITH ENCAPSULATED 1,4-DIAZABICYCLO[2.2.2]OCTANE AS THE TEMPLATE - GA3(PO4)(HPO4)2F3(OH).C6N2H14.0.5 H2O
SO	JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS
AB	A gallophosphate with an open framework is synthesized; its structure consists of interconnecting Ga2O7-PHI-F2 (PHI = O or OH) bioctahedra and PO4 tetrahedra, building up a three-dimensional network around a novel (3(12)6(4)8(8)) cage type, enclosing two 1,4-diazabicyclo[2.2.2]octane organic templates and leading to eight-membered channels along [001], six- and eight-rings along [101] and [010], the water molecule being located in the latter.
C1	UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,AVE OLIVIER MESSIAEN,F-72017 LE MANS,FRANCE.
TC	48
PD	SEP 1
PY	1992
IS	17
BP	1197
EP	1198
UT	ISI:A1992JM08700020
ER

PT	J
AU	BAUMER, P DORVAL, ED BERTRAND, J VETEL, JM SCHWARTZ, JC LECOMTE, JM
TI	EFFECTS OF ACETORPHAN, AN ENKEPHALINASE INHIBITOR, ON EXPERIMENTAL AND ACUTE DIARRHEA
SO	GUT
AB	Acetorphan is an orally active inhibitor of enkephalinase (EC 3.4.24.11) with antidiarrhoeal activity in rodents apparently through protection of endogenous enkephalins and a purely antisecretory mechanism. Its antidiarrhoeal activity in man was assessed in an experimental model of cathartic induced secretory diarrhoea as well as in acute diarrhoea. of presumed infectious origin. In six healthy volunteers receiving castor oil and pretreated with acetorphan or placebo in a crossover controlled trial, the drug significantly decreased the number and weight of stools passed during 24 hours. About 200 outpatients with severe acute diarrhoea (more than five stools per day) were included in a randomised double blind study of acetorphan against placebo. The significant antidiarrhoeal activity of acetorphan was established using a variety of criteria: (i) the duration of both diarrhoea and treatment were diminished; (ii) no acetorphan treated patient withdrew from the study whereas five dropped out because of worsening in the placebo group; (iii) the frequency of symptoms associated with diarrhoea - for example, abdominal pain or distension, nausea and anorexia - remaining after two weeks was nearly halved; (iv) using visual analogue scales acetorphan treatment was found more effective than placebo by both investigators and patients. There was statistically no significant difference between acetorphan and placebo in respect of side effects, particularly constipation, which often accompanies the antidiarrhoeal activity of mu opioid receptor agonists this difference is attributable to the lack of antipropulsive activity of acetorphan in man. The efficacy and tolerance of acetorphan suggest that enkephalinase inhibition may represent a novel therapeutic approach for the symptomatic management of acute secretory diarrhoea without impairing intestinal transit.
C1	INST NATL SANTE & RECH MED,CTR PAUL BROCA,UNITE NEUROBIOL & PHARMACOL,ZTER RUE ALESIA,F-75014 PARIS,FRANCE. CHU TROUSSEAU,TOURS,FRANCE. CHR LE MANS,LE MANS,FRANCE.
TC	44
PD	JUN
PY	1992
VL	33
IS	6
BP	753
EP	758
UT	ISI:A1992HZ12300008
ER

PT	J
AU	LAIREZ, D ADAM, M EMERY, JR DURAND, D
TI	RHEOLOGICAL BEHAVIOR OF AN EPOXY AMINE SYSTEM NEAR THE GEL POINT
SO	MACROMOLECULES
AB	Experimental results are presented concerning the dynamic behavior of a cross-linking polymer near the gel point. Attention is focused on the exponents which govern the frequency dependence of the real and imaginary parts of the shear modulus. It is found that there is only one moment during the network formation at which these two exponents are identical, while this behavior is predicted during a time period including the gel point. Nevertheless, the exponent value found is not far from the percolation and Rouse model theories.
C1	UNIV MAINE,CNRS,URA 509&807,F-72017 LE MANS,FRANCE.
RP	LAIREZ, D, CENS,SERV PHYS ETAT CONDENSE,DRECAM,F-91191 GIF SUR YVETTE,FRANCE.
TC	44
PD	JAN 6
PY	1992
VL	25
IS	1
BP	286
EP	289
UT	ISI:A1992GZ53900046
ER

PT	J
AU	DONOHOE, RJ WORL, LA ARRINGTON, CA BULOU, A SWANSON, BI
TI	PHOTOINDUCED DEFECTS IN THE BROMIDE-BRIDGED PLATINUM LINEAR-CHAIN [PT(EN)2][PT(EN)2BR2](CLO4)4 (WITH EN=ETHYLENEDIAMINE)
SO	PHYSICAL REVIEW B
AB	Photoinduced defects in the bromide-bridged platinum linear chain [Pt(en)2][Pt(en)2Br2](ClO4)4 (PtBr, where en=ethylenediamine) yield Raman, absorption, and electron paramagnetic resonance (EPR) signals that have been examined as a function of temperature in order to determine the kinetics of the decay of these metastable defects in an intermediate-strength low-dimensional charge-density-wave (CDW) solid. Both diamagnetic and paramagnetic defects are photogenerated with the initial excitonic transient primarily decaying to form electron bipolarons and hole polarons. The photogenerated Raman signal is indicative of the former and the EPR signal of the latter. The type and stability of these photoinduced defects are dependent on the sample history, with PtBr crystals grown in the orthorhombic phase (above 30-degrees-C) leading to greater variety and stability of defects as compared with those photoinduced in crystals grown in the monoclinic phase (below 10-degrees-C). The temperature dependence of the photogenerated spectroscopic signals reveals complicated decay routes, with the eventual recombination of valence defects mediated by lattice pinning potentials of various strengths, interconversion of defect states (including the possible "melting" of electron bipolarons into electron polarons) and a strengthening of the CDW as the crystals are warmed toward room temperature. The observation of bromide hyperfine splitting in the EPR data and the reversible intensity changes in the Raman defect signals indicates that these defects are spatially quite disperse, with ten or greater platinum sites revealed in the EPR signal, and demonstrates that the weakening of the CDW in PtBr relative to the strong CDW solid PtCl has a significant effect on the ground- and defect-state properties.
C1	FURMAN UNIV,GREENVILLE,SC 29613. UNIV MAINE,FAC SCI,PHYS ETAT CONDENSE LAB,F-72017 LE MANS,FRANCE.
RP	DONOHOE, RJ, LOS ALAMOS NATL LAB,INORGAN & STRUCT CHEM GRP,INC-4,MS-C345,LOS ALAMOS,NM 87545.
TC	29
PD	JUN 15
PY	1992
VL	45
IS	23
BP	13185
EP	13195
UT	ISI:A1992HZ24500001
ER

PT	J
AU	BONFAND, E GOSSELIN, P MAIGNAN, C
TI	1ST SYNTHESES OF CHIRAL 2-SULFINYLBUTADIENES
SO	TETRAHEDRON LETTERS
AB	The title compounds were readily prepared respectively from (S)-3-p-tolylsulfinylbut-3-en-2-ol 3 and (S)-3-p-tolylsulfinylbul-3-en-2-one 4.
C1	UNIV MAINE,CNRS,SYNTHESE ORGAN LAB,AVE OLIVIER MESSIAEN,BP 535,F-72017 LE MANS,FRANCE.
TC	26
PD	APR 21
PY	1992
VL	33
IS	17
BP	2347
EP	2348
UT	ISI:A1992HQ79000027
ER

PT	J
AU	BROWN, E LEZE, A TOUET, J
TI	PREPARATIVE SYNTHESES OF OPTICALLY PURE ORTHOSUBSTITUTED BENZHYDROLS BY ASYMMETRIC REDUCTIONS OF THE CORRESPONDING BENZOPHENONES
SO	TETRAHEDRON-ASYMMETRY
AB	Lithium aluminium hydride previously treated with 2.5 equivalents of (S)-(+) or (R)-(-)-2 -(2-iso-indolinyl)butan-1-ol 3 (readily available reagents) reduced the five ortho-substituted benzophenones 4-6, 8 and 10 into the corresponding optically active benzhydrols with nearly 100% enantiomeric excesses. Other examples of asymmetric reductions of prochiral benzophenones are given.
RP	BROWN, E, FAC SCI LE MANS,SYNTHESE ORGAN LAB,URA 482,AVE OLIVIER MESSIAEN,BP 535,F-72017 LE MANS,FRANCE.
TC	23
PD	JUL
PY	1992
VL	3
IS	7
BP	841
EP	844
UT	ISI:A1992JD93700006
ER

PT	J
AU	KHATER, A LEGAL, G KANEYOSHI, T
TI	PHASE-DIAGRAM OF A SPIN-1/2 BILAYER SYSTEM WITH DISORDERED INTERFACES
SO	PHYSICS LETTERS A
AB	The effect of disordered interfaces on the phase diagrams of a bilayer A and B, spin-1/2 system, is analyzed, where A and B possess different bulk properties. An effective field theory is employed. In particular, the mean bulk-like transition temperature T(c) of the considered system is calculated in general as a function of the different exchange constants of the system and as a function of the concentration p in the randomly disordered interface layer A(p)B1-p. It is shown that the existence of disordered interfaces may severely affect the phase diagrams of T(c).
C1	NAGOYA UNIV,DEPT PHYS,NAGOYA 46401,JAPAN.
RP	KHATER, A, UNIV MAINE,CNRS,URA 807,PHYS MAT LAB,F-72017 LE MANS,FRANCE.
TC	22
PD	DEC 7
PY	1992
VL	171
IS	3-4
BP	237
EP	241
UT	ISI:A1992KB01100018
ER

PT	J
AU	LANDAIS, Y ROBIN, JP
TI	RUTHENIUM DIOXIDE IN FLUORO ACID-MEDIUM .3. APPLICATION TO THE SYNTHESIS OF APORPHINIC, HOMOAPORPHINIC AND DIBENZAZOCINIC ALKALOIDS - STUDIES TOWARDS THE PREPARATION OF AZAFLUORANTHENIC SKELETON
SO	TETRAHEDRON
AB	Intramolecular oxidative couplings of phenylalkyltetrahydroisoquinoline precursors in aporphinic and homoaporphinic alkaloids by using RuO2,2H2O in fluoro acidic media were performed. A comparative study of our reagent with TTFA has been made with different precursors. The procedure was also extended to the synthesis of one dibenzazocinic alkaloid. Then, we attempted to synthetize the azafluoranthenic ring, using phenolic and non phenolic isoquinoline precursors.
C1	UNIV MAINE,INST TECHNOL,DEPT CHIM,ROUTE LAVAL,F-72017 LE MANS,FRANCE.
TC	22
PD	AUG 28
PY	1992
VL	48
IS	35
BP	7185
EP	7196
UT	ISI:A1992JL95100015
ER

PT	J
AU	BOHNKE, O REZRAZI, M VUILLEMIN, B BOHNKE, C GILLET, PA ROUSSELOT, C
TI	INSITU OPTICAL AND ELECTROCHEMICAL CHARACTERIZATION OF ELECTROCHROMIC PHENOMENA INTO TUNGSTEN TRIOXIDE THIN-FILMS
SO	SOLAR ENERGY MATERIALS AND SOLAR CELLS
AB	The results of "in situ" measurements of the electrochemical and optical properties of tungsten trioxide (WO3) thin films obtained by vacuum evaporation, anodic oxidation of W and chemical vapor deposition, are presented. Optical measurements were performed at lambda = 633 nm with a He-Ne laser. Cyclic voltammetry and chronoamperometry have been used as electrochemical techniques. The determination of the variation of the chemical potential of the inserted species (ions and electrons) during insertion into the oxide has been carried out using an electrochemical method. This variation is of great importance in electrochromic kinetics. Based on the assumption of a double injection of electrons and ions into the oxide and on experimental observations, we propose a model to describe the electrochromic phenomena and the different reactions leading to the coloration of the oxide. From this model and from the experimental curves, J = f(t) and OD = f(t), the ionic diffusion coefficient into the oxide is obtained. The electrode-electrolyte interface was also investigated in this study. We used the technique of impedance spectroscopy to analyse this interface. Both charge transfer and diffusion coefficient have been determined from the Nyquist diagrams. The values obtained were in good agreement with those obtained from the above proposed model.
C1	UNIV MAINE,FLUORURES LAB,CNRS,UA 449,F-72017 LE MANS,FRANCE.
RP	BOHNKE, O, UNIV FRANCHE COMTE,ELECTROCHIM SOLIDES LAB,CNRS,UA 0436,F-25030 BESANCON,FRANCE.
TC	22
PD	FEB
PY	1992
VL	25
IS	3-4
BP	361
EP	374
UT	ISI:A1992HP91200014
ER

PT	J
AU	BALDOCHI, SL GESLAND, JY
TI	CRYSTAL-GROWTH OF PURE AND LEAD DOPED BARIUM-LITHIUM FLUORIDE
SO	MATERIALS RESEARCH BULLETIN
AB	We determined the conditions of preparation and growth of pure and lead doped BaLiF3 crystals for a simple pulling equipment without diameter control. We utilized an empirical step temperature program which is compared with a theoretical non-linear program proposed to BaLiF3 crystals growth. To improve the optical quality of crystals obtained we realized a study of the macroscopic shape of the growing interface and growth direction. The distribution coefficient of Pb in BaLiF3 was estimated as 0.05.
RP	BALDOCHI, SL, UNIV MAINE,UMC,F-72017 LE MANS,FRANCE.
TC	21
PD	JUL
PY	1992
VL	27
IS	7
BP	891
EP	900
UT	ISI:A1992JB53800012
ER

PT	J
AU	DAMOUN, S PAPIN, R RIPAULT, G ROUSSEAU, M RABADEUX, JC DURAND, D
TI	RADICAL POLYMERIZATION OF METHYL-METHACRYLATE IN SOLUTION MONITORED AND STUDIED BY RAMAN-SPECTROSCOPY
SO	JOURNAL OF RAMAN SPECTROSCOPY
AB	Raman spectroscopy was used to investigate the kinetics of the free-radical polymerization of methyl methacrylate in toluene, initiated with azobisisobutyronitrile at 70-degrees-C. The decrease in the intensity of the 1636 cm-1 C=C stretching band compared with a solvent band as an internal standard allows an accurate determination of the rate of conversion of monomers to polymeric chains. A careful quantitative study of the evolution of the C=O stretch band profile, interpreted in terms of intra-chain dipole-dipole interactions, gives a similar dependence for the conversion.
C1	UNIV MAINE,PHYS ETAT CONDENSE LAB,CNRS,URA 807,F-72017 LE MANS,FRANCE. UNIV MAINE,PHYSICOCHIM MACROMOLEC LAB,CNRS,URA 509,F-72017 LE MANS,FRANCE.
TC	20
PD	JUL
PY	1992
VL	23
IS	7
BP	385
EP	389
UT	ISI:A1992JE88600004
ER

PT	J
AU	TOUET, J BAUDOUIN, S BROWN, E
TI	ASYMMETRIC MICHAEL ADDITIONS OF GRIGNARD-REAGENTS TO CINNAMAMIDES DERIVING FROM N-ALKYL (R)-(-)-2-AMINOBUTAN-1-OL
SO	TETRAHEDRON-ASYMMETRY
AB	Reaction of cinnamoyl chloride with various N-alkyl derivatives of (R)-(-)-2-aminobutan-1-ol (a readily available reagent) afforded the corresponding cinnamamides. Michael additions of Grignard reagents to the latter, followed by acidic hydrolysis, yielded optically active beta-phenylalkanoic acids whose ee most generally were in the range 72-100%.
RP	TOUET, J, FAC SCI LE MANS,SYNTHESE ORGAN LAB,URA 482,BP 535,F-72017 LE MANS,FRANCE.
TC	18
PD	MAY
PY	1992
VL	3
IS	5
BP	587
EP	590
UT	ISI:A1992HU18700003
ER

PT	J
AU	ROBIN, JP LANDAIS, Y
TI	RUTHENIUM DIOXIDE IN FLUORO ACID-MEDIUM .2. APPLICATION TO THE FORMATION OF STEGANES SKELETON BY OXIDATIVE PHENOLIC COUPLING
SO	TETRAHEDRON
AB	Ruthenium (IV) dioxide dihydrate in fluoro acidic medium was found to be a very efficient agent for the oxidative coupling of the phenolic lignans (+/-)-presteganes A and B. Different attempts to oxidise the diphenolic dibenzylbutanolide (+/-)-HPMF were also carried out, but were unsuccessful. Likely explanation for these failures are given.
RP	ROBIN, JP, UNIV MAINE,INST UNIV TECHNOL,DEPT CHIM,ROUTE LAVAL,F-72017 LE MANS,FRANCE.
TC	18
PD	JAN 31
PY	1992
VL	48
IS	5
BP	819
EP	830
UT	ISI:A1992HC16500005
ER

PT	J
AU	AMOROS, P LEBAIL, A
TI	SYNTHESIS AND CRYSTAL-STRUCTURE OF ALPHA-NH4(VO2)(HPO4)
SO	JOURNAL OF SOLID STATE CHEMISTRY
C1	UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
RP	AMOROS, P, UNIV VALENCIA,FAC CIENCIES QUIM,DEPT QUIM INORGAN,UIBCM,DR MOLINER 50,E-46100 BURJASSOT,SPAIN.
TC	17
PD	APR
PY	1992
VL	97
IS	2
BP	283
EP	291
UT	ISI:A1992HL68700004
ER

PT	J
AU	LACORRE, P
TI	PASSAGE FROM T-TYPE TO T'-TYPE ARRANGEMENT BY REDUCING R4NI3O10 TO R4NI3O8 (R = LA, PR, ND)
SO	JOURNAL OF SOLID STATE CHEMISTRY
RP	LACORRE, P, UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,AVE OLIVIER MESSIAEN,F-72017 LE MANS,FRANCE.
TC	17
PD	APR
PY	1992
VL	97
IS	2
BP	495
EP	500
UT	ISI:A1992HL68700030
ER

PT	J
AU	LEBAIL, A FOURQUET, JL
TI	CRYSTAL-STRUCTURE AND THERMAL-BEHAVIOR OF H2TI3O7 - A NEW DEFECTIVE RAMSDELLITE FORM FROM LI+/H+ EXCHANGE ON LI2TI3O7
SO	MATERIALS RESEARCH BULLETIN
AB	A new form of H2Ti3O7, belonging to the ramsdellite structural type, is obtained by a simple Li+/H+ exchange on Li2Ti3O7. The symmetry is preserved during the exchange reaction (Pnma, a = 9.7689(6), b = 2.9212(2) and c = 4.6745(4) angstrom). The crystal structure is solved from both X-Ray and neutron powder diffraction data. The final model is compared to the structures of alpha-MOOH phases as groutite and diaspore. Its thermal behaviour is studied by DSC, TGA and neutron thermodiffractometry. Between 373 and 675 K, three phases are evidenced before the final transformation into TiO2 rutile.
RP	LEBAIL, A, UNIV MAINE,FAC SCI MANS,FLUORURES LAB,CNRS,URA 449,ROUTE LAVAL,F-72017 LE MANS,FRANCE.
TC	16
PD	JAN
PY	1992
VL	27
IS	1
BP	75
EP	85
UT	ISI:A1992GX25000010
ER

PT	J
AU	GIRODIER, L MAIGNAN, C ROUESSAC, F
TI	SYNTHESES OF ENANTIOMERICALLY PURE FURYL AND THIENYL PARA-TOLYL SULFOXIDES
SO	TETRAHEDRON-ASYMMETRY
AB	We report a highly enantioselective reaction of Grignard reagents, derived from simple furans or thiophene, with (-)-(S)-menthylsulfinate to give in high yield enantiomerically pure furyl and thienylsulfoxides.
C1	UNIV MAINE,CNRS,SYNTHESE ORGAN LAB,AVE O MESSIAEN,F-72017 LE MANS,FRANCE.
TC	15
PD	JUL
PY	1992
VL	3
IS	7
BP	857
EP	858
UT	ISI:A1992JD93700010
ER

PT	J
AU	LEBAIL, A FOURQUET, JL BENTRUP, U
TI	T-ALF3 - CRYSTAL-STRUCTURE DETERMINATION FROM X-RAY-POWDER DIFFRACTION DATA - A NEW MX(3) CORNER-SHARING OCTAHEDRA 3D NETWORK
SO	JOURNAL OF SOLID STATE CHEMISTRY
C1	ZENT INST ANORGAN CHEM,O-1199 BERLIN,GERMANY.
RP	LEBAIL, A, UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
TC	14
PD	SEP
PY	1992
VL	100
IS	1
BP	151
EP	159
UT	ISI:A1992JL37100017
ER

PT	J
AU	DEKOZAK, A SAMOUEL, M RENAUDIN, J FEREY, G
TI	THE BINARY-SYSTEM BAF2/ALF3
SO	ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
AB	The system BaF2/AlF3 is investigated by X-ray and D.T.A., and the liquid-solid phase diagram is established. Five ternary fluorides are disclosed: trimorphic BaAlF5, Ba3Al2F12, Ba5Al3F19, polymorphic Ba3AlF9 and Ba5AlF13. Neutron thermodiffractometry experiments are performed to specify some parts of the diagram. The cell parameters of the fluorides are given and the results are discussed and compared with those of the previous works,
C1	UNIV MAINE,FLUORURES LAB,CNRS,UA 449,F-72017 LE MANS,FRANCE.
RP	DEKOZAK, A, UNIV PARIS 06,CRISTALLOCHIM SOLIDE LAB,CNRS,UA 1388,TOUR 54,4 PL JUSSIEU,F-75252 PARIS 05,FRANCE.
TC	14
PD	JUL
PY	1992
VL	613
IS	7
BP	98
EP	104
UT	ISI:A1992JE37800016
ER

PT	J
AU	LALIGANT, Y
TI	CRYSTAL-STRUCTURE OF LI2PDP2O7 SOLVED FROM X-RAY-POWDER DIFFRACTION
SO	EUROPEAN JOURNAL OF SOLID STATE AND INORGANIC CHEMISTRY
AB	The crystal structure of Li2PdP2O7 has been determined from X-ray powder diffraction data using direct methods combined with Rietveld profile refinement principles. The cell is orthorhombic (Space group Imma, Z = 4) with a = 12.5858(9) angstrom, b = 7.4955(5) angstrom, c = 5.8116(4) angstrom. The refinement of 25 parameters using 237 reflections leads to R(B) = 0.051 and R(WP) = 0.126. The structure of Li2PdP2O7 consists of alternative (1 0 0) stacking of layers containing LiO6 octahedra, and ribbons formed by P2O7 groups with twofold internal symmetry and PdO4 square planes. In the layers, oxygens exhibit [3.4.5.4,(3.4.5(2))2] plane nets, but in contrast to Na2PdP2O7, the cationic network in the layers does not adopt a honeycomb plane net. LiO6 octahedra layers can be described as infinite rutile chains running along the c axis, connected one to the other by corners along b, leading then to a pseudo-ReO3 network.
RP	LALIGANT, Y, UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
TC	14
PY	1992
VL	29
IS	2
BP	239
EP	247
UT	ISI:A1992HP83600007
ER

PT	J
AU	BROSSE, JC KLINPITUKSA, P SOUTIF, JC
TI	2ND-DEGREE MODIFICATION OF EPOXIDIZED POLYMERS .4. FIXATION OF NAPHTHYLACETIC ACID ON EPOXIDIZED SYNTHETIC 1,4-POLYISOPRENE AND LIQUID NATURAL CAOUTCHOUC
SO	MAKROMOLEKULARE CHEMIE-MACROMOLECULAR CHEMISTRY AND PHYSICS
AB	The reaction of naphthylacetic acid (a plant growth stimulator) on epoxidized 1,4-polyisoprene has been studied. The increase of the rate of addition of the acid on the oxirane rings, catalyzed by the tetramethylammonium salt of the acid, with temperature, time and concentration of the reagents, is fairly well represented by a second-order kinetic law.
RP	BROSSE, JC, UNIV MAINE,CHIM & PHYSICOCHIM MACROMOLEC LAB,CNRS,URA 509,F-72017 LE MANS,FRANCE.
TC	13
PD	FEB
PY	1992
VL	193
IS	2
BP	315
EP	321
UT	ISI:A1992HG81200002
ER

PT	J
AU	LALIGANT, Y
TI	STRUCTURE DETERMINATION OF NA2PDP2O7 FROM X-RAY-POWDER DIFFRACTION
SO	EUROPEAN JOURNAL OF SOLID STATE AND INORGANIC CHEMISTRY
AB	Na2PdP2O7 crystal structure was solved by direct methods and refined by the Rietveld technique from X-ray powder diffraction data. The cell is monoclinic (space group C 2/c, Z = 4) with a = 14.693(3) angstrom, b = 5.8551(4) angstrom, c = 7.922(2) angstrom and beta = 114.11(2)-degrees. The refinement ot 37 parameters using 45 reflections leads to R(B) = 0.045 and R(WP) = 0.105. The structure of Na2PdP2O7 can be described by the alternative (1 0 0) stacking of layers containing NaO6 octahedra, and ribbons formed by P2O7 groups with twofold internal symmetry and PdO4 square planes. The ribbons are built up from blocks [PdP2O9] which lead to a new crystal chemistry for diphosphates. In the layers, the cationic network adopts a honeycomb plane net, whereas oxygens exhibit [3.4.5.4,(3.4.5(2))2] plane nets.
RP	LALIGANT, Y, UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
TC	13
PY	1992
VL	29
IS	1
BP	83
EP	94
UT	ISI:A1992HF58200009
ER

PT	J
AU	CROSNIER, MP FOURQUET, JL
TI	SYNTHESIS AND CRYSTAL-STRUCTURE OF A NEW ACENTRIC OXYFLUORIDE - BA2TIOF6
SO	JOURNAL OF SOLID STATE CHEMISTRY
RP	CROSNIER, MP, UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
TC	12
PD	AUG
PY	1992
VL	99
IS	2
BP	355
EP	363
UT	ISI:A1992JH12600017
ER

PT	J
AU	PONCINEPAILLARD, F LEGEAY, G BROSSE, JC
TI	PLASMA MODIFICATION OF CELLULOSE DERIVATIVES AS BIOMATERIALS
SO	JOURNAL OF APPLIED POLYMER SCIENCE
AB	A film of cellulose acetate was submitted to a cold plasma of tetrafluoromethane or of sulfur hexafluoride. The interactions of these cold plasmas and cellulose acetate lead to a material whose surface has been modified by fluorination. Comparison of CF4 or SF6 plasma treatment shows that fluorine atoms provided by each-kind of plasma induce degradation and grafting of fluorocarbon radicals on the surface. As a consequence, the surface energy decreases and offers the possibility of a better response of plasma-modified cellulose derivatives used as biomaterials (e.g., hemodialysis membrane).
C1	INST RECH APPL POLYMERES,F-72017 LE MANS,FRANCE.
RP	PONCINEPAILLARD, F, UNIV MAINE,CHIM & PHYSICOCHIM MACROMOLEC LAB,CNRS,UA 509,AVE OLIVIER MESSIAEN,F-72017 LE MANS,FRANCE.
TC	12
PD	MAR 25
PY	1992
VL	44
IS	9
BP	1513
EP	1522
UT	ISI:A1992HE63900003
ER

PT	J
AU	BOUCHET, A DRESS, AWM HAVEL, TF
TI	DELTA-MATROIDS AND METROIDS
SO	ADVANCES IN MATHEMATICS
C1	UNIV BIELEFELD,FAK MATH,W-4800 BIELEFELD 1,GERMANY. UNIV MICHIGAN,DIV BIOPHYS RES,ANN ARBOR,MI 48109.
RP	BOUCHET, A, FAC SCI LE MANS,DEPT MATH & INFORMAT,ROUTE LAVAL,F-72017 LE MANS,FRANCE.
TC	12
PD	JAN
PY	1992
VL	91
IS	1
BP	136
EP	142
UT	ISI:A1992HB46600007
ER

PT	J
AU	LEBAIL, A MERCIER, AM
TI	SYNTHESIS AND CRYSTAL-STRUCTURE OF GAMMA-BAZRF6
SO	JOURNAL OF SOLID STATE CHEMISTRY
RP	LEBAIL, A, FAC SCI LE MANS,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
TC	11
PD	DEC
PY	1992
VL	101
IS	2
BP	229
EP	236
UT	ISI:A1992KA92500004
ER

PT	J
AU	BONNANSPLAISANCE, C COURRIC, S LEVESQUE, G
TI	FUNCTIONAL POLYTHIIRANES .2. POLYMERS OF METHYL (2,3-EPITHIOPROPYL-THIO) ETHANOATE
SO	POLYMER BULLETIN
AB	The synthesis of a new monomer holding a carboxylate function and a thiirane ring, is described in this study. Its homopolymerization through thiirane ring opening, using as initiator, tetramethylammonium (di)thiobenzoate in DMF and affording polysulfides with pendent carboxylate groups is investigated. The copolymers with methyl thiirane are identified by 13C NMR spectroscopy. The corresponding polyacids can be easily obtained through saponification.
C1	UNIV CAEN,CHIM POLYMERES & INTERFACES LAB,CNRS,UA 480,F-14050 CAEN,FRANCE.
RP	BONNANSPLAISANCE, C, UNIV MAINE,SYNTHESE POLYMERES FONCT LAB,CNRS,US 509,F-72017 LE MANS,FRANCE.
TC	11
PD	JUL
PY	1992
VL	28
IS	5
BP	489
EP	495
UT	ISI:A1992JC42900001
ER

PT	J
AU	BOISSIN, P DHAL, R BROWN, E
TI	LIGNANES .15. 1ST TOTAL SYNTHESIS OF NATURAL (-)-ALPHA-CONIDENDRIN
SO	TETRAHEDRON
AB	(-)-alpha-Conidendrin 1 was synthesized according to a general reaction scheme that could be applied to other retrolignans as well. Thus, treatment of the optically active beta-benzyl-gamma-butyrolactone (R)-(+)-4 with NBS, followed with benzyl alcohol selectively introduced a benzyloxy group in the benzylic position and afforded the mixture of epimers 7. alpha-Alkylation of the lithium enolate of the corresponding silyl ethers 10, with O-benzylvanillyl bromide 11, gave the trans disubstituted lactones 13 (2 epimers). Catalytic hydrogenolysis (Pd-C) of 13 selectively split the aryl benzyl ether linkage, and gave the compounds 14. Intramolecular Friedel-Crafts cyclization of the latter, using the benzyloxy group as the leaving group, was induced with BF3.Et2O and afforded (-)-alpha-conidendrin 1 in 36% overall yield from methyl alpha-vanillylhemisuccinate (R)-(+)-17.
C1	FAC SCI LE MANS,SYNTHESE ORGAN LAB,CNRS,URA 482,AVE OLIVIER MESSIAEN,BP 535,F-72017 LE MANS,FRANCE.
TC	11
PD	JAN 24
PY	1992
VL	48
IS	4
BP	687
EP	694
UT	ISI:A1992HC16400008
ER

PT	J
AU	BRETAGNE, J EPAILLARD, F RICARD, A
TI	EXCITED-STATES OF CF-4 PLASMA FOR POLYMERIZATION OF TMPTA MONOMER
SO	JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
AB	The F and CF2-CF2+ excited states have been detected by emission spectroscopy in CF4RF plasmas used for TMPTA polymerization. These excited states are related through electron collision to F and CF2 ground states. The temporal variation of the F and CF2-CF2+ radiative states near the substrate reveals that the F atoms disappear first by incorporation in the monomer during the polymerization phase and, then, by a third body recombination process enhanced by the polymer surface. The CF2-CF2+ radiative states are varying as the inverse of the F states indicating a strong destruction mechanism of CF2 radicals by F atoms.
C1	UNIV MAINE,CHIM & PHYSICOCHIM MACROMOLEC LAB,ROUTE LAVAL,F-72017 LE MANS,FRANCE. UNIV PARIS 11,PHYS GAZ & PLASMAS LAB,F-91405 ORSAY,FRANCE.
TC	11
PD	FEB
PY	1992
VL	30
IS	2
BP	323
EP	328
UT	ISI:A1992HA09800017
ER

PT	J
AU	KHAMLACH, MK DHAL, R BROWN, E
TI	LIGNANES .16. PRIMARY TOTAL SYNTHESIS OF (+)-WIKSTRORMOL, (-)-TRACHELOGENIN, (-)-NORTRACHELOGENIN AND RELATED LIGNOIDS
SO	TETRAHEDRON
AB	Racemic and optically active alpha,beta-dibenzyl-gamma-butyrolactones (of synthetic origin) were hydroxylated in the alpha position with respect to the carbonyl group, using oxygen in the presence of LHDS. This led to (-)-trachelogenin 1, (-)-nortrachelogenin 2 and (+)-wikstromol 3, whose interesting pharmacological properties were recently described. These natural lignans were correlated to (+/-)-methyltrachelogenin 12 whose relative structure was definitely established by X-ray cristallography.
RP	KHAMLACH, MK, FAC SCI LE MANS,SYNTHESE ORGAN LAB,CNRS,URA 482,AVE OLIVIER MESSIAEN,BP 535,F-72017 LE MANS,FRANCE.
TC	10
PD	NOV 13
PY	1992
VL	48
IS	46
BP	10115
EP	10126
UT	ISI:A1992JY86400007
ER

PT	J
AU	ROSSELL, HJ LEBLANC, M FEREY, G BEVAN, DJM SIMPSON, DJ TAYLOR, MR
TI	ON THE CRYSTAL-STRUCTURE OF BI2TE4O11
SO	AUSTRALIAN JOURNAL OF CHEMISTRY
AB	Bi2Te4O11 is monoclinic, space group P2(1)/n; the lattice parameters derived from a Guinier powder pattern (Si standard) are: a = 6.9909(3), b = 7.9593(3), c = 18.8963(8) angstrom, beta = 95.176(3)-degrees, Z = 4, V = 1047.15 angstrom3. The structure was solved independently from both single-crystal X-ray data and a combination of X-ray and neutron powder data. It is an anion-deficient superstructure of fluorite in which can be recognized the ordered intergrowth of fluorite-type Bi2Te2O7 and rutile-type Te2O4. Lone-pair electrons are stereochemically active.
C1	UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE. FLINDERS UNIV,SCH PHYS SCI,ADELAIDE,SA 5001,AUSTRALIA.
RP	ROSSELL, HJ, CSIRO,DIV MAT SCI & TECHNOL,LOCKED BAG 33,CLAYTON,VIC 3168,AUSTRALIA.
TC	10
PY	1992
VL	45
IS	9
BP	1415
EP	1425
UT	ISI:A1992JJ82100007
ER

PT	J
AU	RIOU, D LOISEAU, T FEREY, G
TI	STRUCTURE DETERMINATION OF (N2C2H10)4(NH4)ALP4O16 - A NEW ALUMINOPHOSPHATE TEMPLATED BY ETHYLENEDIAMINE
SO	JOURNAL OF SOLID STATE CHEMISTRY
RP	RIOU, D, UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,AVE OLIVIER MESSIAEN,F-72017 LE MANS,FRANCE.
TC	10
PD	AUG
PY	1992
VL	99
IS	2
BP	414
EP	418
UT	ISI:A1992JH12600025
ER

PT	J
AU	LAURIKS, W MEES, P ALLARD, JF
TI	THE ACOUSTIC TRANSMISSION THROUGH LAYERED SYSTEMS
SO	JOURNAL OF SOUND AND VIBRATION
C1	KATHOLIEKE UNIV LEUVEN,FAC TOEGEPASTE WETENSCHAPPEN,B-3001 HEVERLEE,BELGIUM. FAC SCI LE MANS,ACOUST LAB,CNRS,UNITE RECH 1101,F-72017 LE MANS,FRANCE.
RP	LAURIKS, W, KATHOLIEKE UNIV LEUVEN,FAC WETENSCHAPPEN,DEPT NAT,AKOESTIEK WARMTEGELEIDING LAB,B-3001 HEVERLEE,BELGIUM.
TC	10
PD	MAY 22
PY	1992
VL	155
IS	1
BP	125
EP	132
UT	ISI:A1992HW61300010
ER

PT	J
AU	REWAJ, T KRUPSKI, M KURIATA, J BUZARE, JY
TI	TEMPERATURE AND HYDROSTATIC-PRESSURE DEPENDENCES OF THE B(4)(0) SPIN-HAMILTONIAN PARAMETER FOR GD3+ IN FLUOROPEROVSKITE SINGLE-CRYSTALS
SO	JOURNAL OF PHYSICS-CONDENSED MATTER
AB	Both the temperature and the pressure dependences of the b4(0) spin-Hamiltonian parameter for RbCaF3, CsCaF3, RbCdF3 and TlCdF3 doped with Gd3+ have been reported. On the assumption that b4(0) depends on the metal-ligand distance according to a law b4(0) is similar to r(k) the following values of k were obtained: -20.9, -27.1, -24.9 and -29.3, respectively. It was found that the temperature dependence of b4(0) is predominantly caused by spin-phonon interactions which were estimated to contribute about 68% to the total dependence observed. The effectiveness of some theoretical models predicting the role of vibronic contributions is also discussed.
C1	FAC SCI LE MANS,EQUIPE PHYS ETAT CONDENSE,CNRS,UR 807,F-72017 LE MANS,FRANCE. POLISH ACAD SCI,INST MOLEC PHYS,PL-60179 POZNAN,POLAND.
RP	REWAJ, T, TECH UNIV SZCZECIN,INST PHYS,AL PIASTOW 17,PL-70310 SZCZECIN,POLAND.
TC	9
PD	DEC 7
PY	1992
VL	4
IS	49
BP	9909
EP	9918
UT	ISI:A1992KC26700018
ER

PT	J
AU	POLACK, JD
TI	MODIFYING CHAMBERS TO PLAY BILLIARDS - THE FOUNDATIONS OF REVERBERATION THEORY
SO	ACUSTICA
AB	In an attempt to capture the essence of reverberation, the wave equation in a room has been developed into a statistical process that exhibits all the properties of reverberation: the distribution of the number of reflections along one sound ray travelling through the room. This development makes use of three domains of mathematics: thc theory of characteristics, that allows a rigorous definition of sound rays from the wave equation, the theory of ergodic dynamical systems, such as billiards, the leads to a unique reverberation time, and the theory of probabilities, that gives the most general form of the reverberation process. Ultimately, a generalization of Sabine's formula is proposed. The use of mathematical theories makes it possible to state the hypotheses under which reverberation is defined. These hypotheses amount to two: the limit of high frequencies, necessary to define sound rays; and diffusion. The latter is redefined as equivalent to mixing, together with a method for computing a diffusion index: the mixing time. Finally, the consequences of relaxing the hypothesis of diffusion are analysed.
RP	POLACK, JD, UNIV MAINE,ACOUST LAB,CNRS,URA 1101,BP 535,F-72017 LE MANS,FRANCE.
TC	9
PD	JUL
PY	1992
VL	76
IS	6
BP	257
EP	272
UT	ISI:A1992JG84600001
ER

PT	J
AU	PECQUET, P HUET, F LEGRAVEREND, M BISAGNI, E
TI	SYNTHESIS OF NEW CARBOCYCLIC ANALOGS OF OXETANOCIN-A AND OXETANOCIN-G
SO	HETEROCYCLES
AB	The synthesis of cis-3-amino-1-cyclobutanemethanol has been performed in six steps (59.6% yield) from cis-1,3-cyclobutanedicarboxylic anhydride. This allowed us to obtain two new carbocyclic analogues of oxetanocin A and oxetanocin G related to 7-deazaadenosine and 7-deazaguanosine
C1	INST CURIE,CNRS,URA 1387,F-91405 ORSAY,FRANCE.
RP	PECQUET, P, UNIV MAINE,FAC SCI,SYNTHESE ORGAN LAB,CNRS,URA 482,BP 535,F-72017 LE MANS,FRANCE.
TC	9
PD	APR 1
PY	1992
VL	34
IS	4
BP	739
EP	745
UT	ISI:A1992HU39000014
ER

PT	J
AU	CROSNIER, MP FOURQUET, JL
TI	SYNTHESIS AND CRYSTAL-STRUCTURE OF BATIOF4
SO	EUROPEAN JOURNAL OF SOLID STATE AND INORGANIC CHEMISTRY
AB	The crystal structure of BaTiOF4 has been determined by X-Ray diffraction data from a single crystal grown by hydrothermal synthesis. The symmetry is orthorhombic: Pbcm, Z = 4, a = 5.1719(2) angstrom, b = 13.7555(7) angstrom, c = 5.5178(2) angstrom (R = 0.0264 and R(w) = 0.0313 for 1030 independent reflections). The structure, characterized by infinite kinked chains of cis connected TiO2F4 octahedra, running along [001], is also described in terms of stacking of quasi hexagonal compact planes of Ba2+, O2- and F- ions. Ba atoms, located in a classical cubooctahedral coordination (12), connect the chains to one another. The location of the O2- anions is discussed using the bond valence method. This structure is compared to those of the A(II)M(III)F5 compounds (BaGaF5, BaAlF5, BaMnF5, SrNiF5).
RP	CROSNIER, MP, UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
TC	9
PY	1992
VL	29
IS	2
BP	199
EP	206
UT	ISI:A1992HP83600003
ER

PT	J
AU	RANDRIANANTOANDRO, N GRENECHE, JM VARRET, F
TI	SURFACE AND BULK CRYSTALLIZATION MECHANISMS IN THE METGLAS FE78B13SI9 INVESTIGATED BY MOSSBAUER-SPECTROSCOPY
SO	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
AB	The amorphous-to-crystalline transformation of the as-received Metglas Fe78B13Si9 (Metglas(R) 2605S2) was studied by transmission and reflection Mossbauer spectroscopy in order to compare shiny and dull surfaces and bulk crystallization mechanisms. In agreement with previous results, the onset of crystallization occurs on both surfaces, simultaneously to the out-of-plane anisotropy. Higher kinetics of crystallization is observed at the dull surface. Then, primary and eutectic crystallization processes seem to be evidenced for the shiny and dull surfaces respectively. It is proposed that these different phenomena originate from the presence of structural and chemical inhomogeneities induced during the solidification process.
C1	UNIV MAINE,PHYS MAT LAB,CNRS,URA 807,BP 535,F-72017 LE MANS,FRANCE. UNIV PARIS 06,DRP,CNRS,URA 71,F-75252 PARIS 05,FRANCE.
TC	8
PD	NOV
PY	1992
VL	117
IS	1-2
BP	93
EP	101
UT	ISI:A1992JZ59400017
ER

PT	J
AU	DALMONT, JP BRUNEAU, AM
TI	ACOUSTIC-IMPEDANCE MEASUREMENT - PLANE-WAVE MODE AND 1ST HELICAL MODE CONTRIBUTIONS
SO	JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
AB	A measuring probe has been built that is comprised of an electrostatic transducer as a source and two receiving microphones. This probe allows measurements of acoustic impedance to be made over a wide range of values and over a larger frequency range than hitherto possible in waveguides by separating the contributions of the plane and first helical modes to the impedance.
RP	DALMONT, JP, UNIV MAINE,ACOUST LAB,CNRS,URA 1101,AVE MESSIAEN,BP 535,F-72017 LE MANS,FRANCE.
TC	8
PD	MAY
PY	1992
VL	91
IS	5
BP	3026
EP	3033
UT	ISI:A1992HT68800056
ER

PT	J
AU	GUILLOT, M ELGHOZZI, M AVIGNANT, D FEREY, G
TI	MAGNETIC-PROPERTIES OF THE TB-4+ ION IN LI2TBF6 - PARTICULAR CRYSTAL CHEMICAL BEHAVIOR WITHIN THE LI2MIVF6 COMPOUNDS
SO	JOURNAL OF SOLID STATE CHEMISTRY
C1	UNIV CLERMONT FERRAND,CHIM SOLIDES LAB,CNRS,UA 444,F-63177 AUBRIERE,FRANCE. UNIV MAINE,CNRS,UA 449,FLUORURES LAB,F-72017 LE MANS,FRANCE.
RP	GUILLOT, M, SERV NATL CHAMPS INTENSES,CNRS,BP 166X,F-38042 GRENOBLE,FRANCE.
TC	8
PD	APR
PY	1992
VL	97
IS	2
BP	400
EP	404
UT	ISI:A1992HL68700018
ER

PT	J
AU	LAIREZ, D EMERY, JR DURRAND, D HAYWARD, D PETHRICK, RA
TI	REAL-TIME DIELECTRIC MEASUREMENTS OF NETWORK FORMATION IN A CROSS-LINKED EPOXY-RESIN SYSTEM
SO	PLASTICS RUBBER AND COMPOSITES PROCESSING AND APPLICATIONS
AB	Real time dielectric measurements are reported on the cure of the diglycidyl ether of bisphenol A (DGEBA) and diamino diphenyl sulphone (DDS) over a temperature range from 393 to 443 K. The measurements were performed over a frequency range from 10(-1) to 10(5) Hz and spectra were collected at regular intervals during the period of cure. Analysis of the dielectric data was carried out in two parts; firstly, consideration of low frequency relaxation which dominates the initial stages of the cure and, secondly, analysis of the longer time higher frequency dipolar relaxation processes which can be associated with vitrification of the matrix. After cure has been completed a dipolar relaxation process remains which is associated with dipolar reorientation of the pendant hydroxyl group generated during the course of cure. Further insight is gained into the nature of the processes occurring during the cure of the matrix by a comparison of dielectric data with mechanical and thermal data obtained using a curometer. A good correlation appears between the various transition points identified from the different measurements. Comparison of the data from the various methods and also that from previous workers is made using a TTT diagram.
C1	UNIV MAINE,FAC SCI,F-72017 LE MANS,FRANCE.
TC	8
PY	1991
VL	16
IS	4
BP	231
EP	238
UT	ISI:A1991GX98400004
ER

PT	J
AU	GILLET, PA FOURQUET, JL BOHNKE, O
TI	NIOBIUM TUNGSTEN TITANIUM-OXIDES - FROM SOFT CHEMISTRY PRECURSORS TO ELECTROCHROMIC THIN-LAYER MATERIALS
SO	MATERIALS RESEARCH BULLETIN
AB	Thin films of transition metal oxyhydroxides containing W and Nb (HNbWO6, H2O) or Ti (H2Ti3O7) Obtained by 'soft chemistry' have been prepared using vacuum evaporation. These films exhibit electrochromic behavior in aqueous acid electrolyte and in non-aqueous electrolyte such as 1M LiClO4/propylene carbonate. It was found that the coloration efficiency of the films may be improved by coevaporating mixtures of these two oxyhydroxides. Moreover, the presence of Ti and Nb in the films has been shown to be directly connected to the nature of the oxyhydroxides precursors.
C1	UNIV MAINE,CNRS,UA 0449,FLUORURES LAB,F-72017 LE MANS,FRANCE.
RP	GILLET, PA, UNIV FRANCHE COMTE,CNRS,UA 0436,ELECTROCHIM SOLIDES LAB,F-25030 BESANCON,FRANCE.
TC	7
PD	OCT
PY	1992
VL	27
IS	10
BP	1145
EP	1152
UT	ISI:A1992JV81400001
ER

PT	J
AU	DELOCHE, B DUBAULT, A DURAND, D
TI	UNIAXIAL ORDER INDUCED IN ANISOTROPICALLY SWOLLEN RUBBERS - A DEUTERIUM NMR APPROACH
SO	JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
C1	UNIV MAINE,PHYSICOCHIM MACROMOLEC LAB,F-72017 LE MANS,FRANCE. ECOLE SUPER PHYS & CHIM IND,PCSM LAB,F-75231 PARIS,FRANCE.
RP	DELOCHE, B, UNIV PARIS 11,PHYS SOLIDE LAB,CNRS,LA 2,F-91405 ORSAY,FRANCE.
TC	7
PD	NOV
PY	1992
VL	30
IS	12
BP	1419
EP	1421
UT	ISI:A1992JT35900013
ER

PT	J
AU	ALEXANDRE, C BELKADI, O MAIGNAN, C
TI	A FACILE ONE-POT SYNTHESIS OF 1-ACYL AND 1-ALPHA-HYDROXYALKYLVINYL PARA-TOLYL (S)-SULFOXIDES
SO	SYNTHESIS-STUTTGART
AB	A novel chiral intermediate, 2-ethoxyethyl p-tolyl sulfoxide (4), permits access in one step to optically active alpha-methylene-beta-oxo sulfoxides, which are very useful dienophiles.
C1	FAC SCI LE MANS,SYNTHESE ORGAN LAB,CNRS,UA 482,BP 535,F-72017 LE MANS,FRANCE.
TC	7
PD	JUN
PY	1992
IS	6
BP	547
EP	548
UT	ISI:A1992HZ05700015
ER

PT	J
AU	GAO, Y GUERY, J LEBAIL, A JACOBONI, C
TI	SYNTHESIS, X-RAY SINGLE-CRYSTAL STRUCTURE DETERMINATION, AND DEHYDRATION STUDY OF BAZR2F10-2H2O BY X-RAY-POWDER THERMODIFFRACTOMETRY
SO	JOURNAL OF SOLID STATE CHEMISTRY
C1	UNIV MAINE,FAC SCI,FLOURURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
TC	7
PD	MAY
PY	1992
VL	98
IS	1
BP	11
EP	24
UT	ISI:A1992HR91600002
ER

PT	J
AU	RIDOU, C ROUSSEAU, M DANIEL, P NOUET, J HENNION, B
TI	R25 AND M3 SOFT MODE COMPETITION NEAR THE STRUCTURAL PHASE-TRANSITION IN KCAF3
SO	FERROELECTRICS
C1	CEA,LAB LEON BRILLOUIN,CNRS,F-91191 GIF SUR YVETTE,FRANCE.
RP	RIDOU, C, FAC SCI LE MANS,LAB PEC,URA 807,F-72017 LE MANS,FRANCE.
TC	7
PY	1991
VL	124
IS	1-4
BP	293
EP	296
UT	ISI:A1991HF28800051
ER

PT	J
AU	GAO, Y GUERY, J JACOBONI, C
TI	X-RAY-POWDER STRUCTURE DETERMINATION OF NABAZRF7
SO	EUROPEAN JOURNAL OF SOLID STATE AND INORGANIC CHEMISTRY
AB	NaBaZrF7 is orthorhombic (S.G.: Pnma) with. a=9.118(1)angstrom, b=5.5563(6)angstrom, c=11.236(1)angstrom and Z=4. Due to systematic twinning of single crystals, the crystal structure was refined from X-ray powder data by using the Rietveld method to R(I)=0.04 and R(P)=0.09. The structure is built up from infinite zigzag cis-chains of edge sharing [NaF8]7- cubes, linked by Zr atoms (leading to [ZrF7]3- polyhedra); a new 1-5-5-1 type of [BaFl2]10- polyhedron has been observed.
RP	GAO, Y, UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
TC	6
PY	1992
VL	29
IS	6
BP	1285
EP	1293
UT	ISI:A1992KC23000026
ER

PT	J
AU	GENEREAU, T HERSON, S PIETTE, JC COUTELLIER, A PELLETIER, S WECHSLER, B BLETRY, O RENOU, P GODEAU, P
TI	TEMPORAL ARTERITIS IN THE YOUNG-ADULT - ATTEMPTED NOSOLOGICAL CLASSIFICATION AND 6 NEW CASES
SO	ANNALES DE MEDECINE INTERNE
AB	Six young-adult patients (19- to 32-years-old) are described : 3 men with temporally localized systemic vasculitis (thromboangiitis obliterans 2, Churg-Strauss angiitis 1) and 3 patients (2 men, 1 woman) with isolated temporal arteritis. Temporal arteritis in subjects under 40 years of age consists of either a temporal localization of systemic vasculitis (thromboangiitis obliterans or Buerger's disease, Churg-Strauss angiitis or polyarteritis nodosa) or a distinct entity of which only 12 biopsy-proven cases have been reported to date. The latter is differentiated from temporal (giant cell) arteritis of the older patient by a higher incidence in men, and the absence or rarity of general symptoms, ocular complications and an accelerated erythrocyte sedimentation rate. Two types of temporal arteritides in young adults seem to be distinguishable : an asymptomatic form with an isolated temporal nodule and a more symptomatic one. In some cases, temporal artertitis in young adults corresponds to a unique entity << juvenile temporal arteritis >>, which seems to be different from Takasayu's arteritis, localized forms of polyarteritis nodosa and Kimura's disease. Although its treatment remains difficult to define, therapy of the symptomatic form could include steroids, whereas the asymptomatic one seems to require only simple monitoring.
C1	GRP HOSP PITIE SALPETRIERE,SERV MED INTERNE SALPETRIERE,47-83 BLVD HOP,F-75651 PARIS 13,FRANCE. GRP HOSP PITIE SALPETRIERE,SERV MED INTERNE PITIE,F-75651 PARIS 13,FRANCE. CTR HOSP RUBILLARD,SERV MED INTERNE,F-72037 LE MANS,FRANCE.
TC	6
PY	1992
VL	143
IS	5
BP	303
EP	308
UT	ISI:A1992JN14100003
ER

PT	J
AU	BOUCHET, A
TI	A CHARACTERIZATION OF UNIMODULAR ORIENTATIONS OF SIMPLE GRAPHS
SO	JOURNAL OF COMBINATORIAL THEORY SERIES B
RP	BOUCHET, A, UNIV MAINE,DEPT MATH & INFORMAT,F-72017 LE MANS,FRANCE.
TC	6
PD	SEP
PY	1992
VL	56
IS	1
BP	45
EP	54
UT	ISI:A1992JN51900004
ER

PT	J
AU	GANEM, G RAOUL, Y GOUDIER, MJ DUBRAY, B COLIN, P EXTRA, JM HENNEQUIN, C MICHELLANGLET, P VIGNOUD, J BARDET, E
TI	ESOPHAGEAL CANCER - HAVE COMBINED TREATMENTS IMPROVED PROGNOSIS
SO	BULLETIN DU CANCER
AB	Prognosis of esophageal cancer is very poor. Five-year survival does not exced 20% after radical surgery, the best available treatment. Unfortunately, only 40% of the patients are amenable to surgery because of poor general status and/or locoregional extension. Adjuvant treatment did not yield survival improvement. Preoperative radiotherapy (three randomized trials) or postoperative radiotherapy (one randomized trial) showed only a decrease of regional relapses, perhaps only for the nodes negative patients. Neoadjuvant chemotherapy obtains some interesting response rate (20 - 60%), but there has been no evidence yet for survival improvement. Recently, promising results were presented after combination of radiotherapy and chemotherapy. In this paper, we review the present status of combined treatment for esophageal cancer. Our multicentric group (OSOF) is now completing a phase II trial, that should soon form the basis for a phase III prospective study.
C1	CLIN ST VINCENT,SERV RADIOTHERPIE,F-35760 ST GREGOIRE,FRANCE. CTR ONCORADIOTHERAPIE & HEMATOL VICTOR HUGO,F-72000 LE MANS,FRANCE. INST GUSTAVE ROUSSY,F-94800 VILLEJUIF,FRANCE. POLYCLIN COURLANCY,F-51100 REIMS,FRANCE. CTR RENE GAUDUCHEAU,F-44805 ST HERBLAIN,FRANCE. CTR HOSP LORIENT,F-56100 LORIENT,FRANCE. HOP MONTFERMEIL,F-93370 MONTFERMEIL,FRANCE. HOP ST LOUIS,F-75010 PARIS,FRANCE.
TC	6
PD	AUG
PY	1992
VL	79
IS	8
BP	735
EP	750
UT	ISI:A1992JM06600001
ER

PT	J
AU	LEGAL, G VARRET, F
TI	MAGNETIC TEXTURE IN METALLIC AMORPHOUS WIRES STUDIED BY MOSSBAUER SPECTROMETRY
SO	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
AB	To determine their magnetic texture, Mossbauer spectrometry is applied to metallic amorphous wires obtained by the in-rotating-water spinning process. Inhomogeneous thickness effects associated with a magnetic texture govern the line intensities of the Mossbauer spectrum. So we have developed a method which consists in simulating standard densities of resonant absorption from a powder Mossbauer spectrum. Then, the fitting of the experimental spectra leads to the values of N(z), N(r) and N(t) representing, respectively, the mean discrete axial, radial and tangential spin populations. Finally, the analysis on wires of different diameters shows that the magnetic texture is preferentially radial (axial) in the skin (bulk).
C1	UNIV PARIS 06,CNRS,URA,DEPT RECH PHYS,F-75252 PARIS,FRANCE.
RP	LEGAL, G, UNIV MAINE,CNRS,URA 807,PHYS MAT LAB,F-72017 LE MANS,FRANCE.
TC	6
PD	JUN
PY	1992
VL	111
IS	1-2
BP	115
EP	122
UT	ISI:A1992JF84300021
ER

PT	J
AU	LEBAIL, A MERCIER, AM
TI	CRYSTAL-STRUCTURE OF PB8MNFE2F24
SO	EUROPEAN JOURNAL OF SOLID STATE AND INORGANIC CHEMISTRY
AB	Pb8MnFe2F24 is monoclinic (S.G. P2(1)/a): a = 20.181(3), b = 5.625(1), c = 9.438(2) angstrom, beta = 105.00(1)-degrees, Z = 2. The structure was determined from X-ray single crystal data using 2576 independent reflections (R = 0.034, Rw = 0.041). The network is built from infinite condensed [MnFe2F14]n 6n- chains of corner-sharing octahedra, running along the b axis, inserted in a fluorite-like matrix.
RP	LEBAIL, A, UNIV MAINE,FLUORURES LAB,F-72017 LE MANS,FRANCE.
TC	6
PY	1992
VL	29
IS	2
BP	183
EP	190
UT	ISI:A1992HP83600001
ER

PT	J
AU	GANNE, M JOUANNEAUX, A TOURNOUX, M LEBAIL, A
TI	STRUCTURE AND PHASE-TRANSITIONS OF LOW-DIMENSIONAL THALLIUM VANADIUM BRONZE TLXV2O5 (0.44-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-0.48)
SO	JOURNAL OF SOLID STATE CHEMISTRY
C1	UNIV MAINE,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
RP	GANNE, M, UNIV NANTES,CHIM SOLIDES LAB,IMN,CNRS,UMR 110,2 RUE HOUSSINIERE,F-44072 NANTES,FRANCE.
TC	6
PD	MAR
PY	1992
VL	97
IS	1
BP	186
EP	198
UT	ISI:A1992HF99900023
ER

PT	J
AU	LAMBERT, C BUIS, R LHARDYHALOS, MT
TI	KINETICS OF PLEURIDIAL GROWTH IN ANTITHAMNION-PLUMULA (RHODOPHYCEAE)
SO	ACTA BIOTHEORETICA
AB	The filamentous and branched thallus of Antithamnion plumula is constitued of two different kinds of branches with apical growth: the cladomial axes with a continuous or indefinite growth, and the pleuridia with a limited growth. The size of the pleuridia depends on their position with respect to the lateral cladomial axes. The growth kinetics of 35 pleuridia were analysed using Nelder's generalized logistics. Each sigmoidal curve, which was divided into four growth stages from the instantaneous acceleration variations, was thus characterized by ten kinetic parameters: lengths at the time of the changes in growth stage, durations of the growth stages and maximum growth rate. The data showed that all curves displayed a marked left dissymmetry which reflected the brevity of the accelerated growth stage (1/5 of total growth duration). The maximum acceleration stage occurs between the individualization of the pleuridial initial cell and the first mitosis. Previously known experimental data were related to this quantitative result so as to put forward a biological meaning. New research pathways were suggested. The kinetic parameters investigated were used for a classification of pleuridia. The smallest ones displayed the slowest growth: they needed twice more time to reach their maximum size than the largest pleuridia whose growth was the fastest. This association of traits was related to the occurrence of acropetal fluxes along the main axis of the thallus.
C1	FAC SCI LE MANS,PHYCOL MARINE & MORPHOGENESE LAB,CNRS,F-72017 LE MANS,FRANCE.
RP	LAMBERT, C, ENSAT,BIOL QUANTITAT MORPHOGENESE VEGETALE LAB,145 AVE MURET,F-31076 TOULOUSE,FRANCE.
TC	5
PD	SEP
PY	1992
VL	40
IS	2-3
BP	169
EP	175
UT	ISI:A1992KB20500010
ER

PT	J
AU	REBILLARD, P ALLARD, JF DEPOLLIER, C GUIGNOUARD, P LAURIKS, W VERHAEGEN, C COPS, A
TI	THE EFFECT OF A POROUS FACING ON THE IMPEDANCE AND THE ABSORPTION-COEFFICIENT OF A LAYER OF POROUS MATERIAL
SO	JOURNAL OF SOUND AND VIBRATION
C1	CATHOLIC UNIV LEUVEN,AKOESTIECK & WARMTEGELEIDING LAB,B-3030 HEVERLEE,BELGIUM. LAB APPLICAT SCI ACOUST,F-78600 MAISONS LAFFITTE,FRANCE.
RP	REBILLARD, P, FAC SCI MANS,CNRS,ACOUST LAB,URA 1101,ROUTE LAVAL,BP 535,F-72017 LE MANS,FRANCE.
TC	5
PD	AUG 8
PY	1992
VL	156
IS	3
BP	541
EP	555
UT	ISI:A1992JJ34000009
ER

PT	J
AU	MUNCH, JP DELSANTI, M DURAND, D
TI	SCALING LAWS IN HIERARCHICAL SYSTEMS OF FRACTAL POLYMERIC CLUSTERS - NEUTRON AND LIGHT-SCATTERING EXPERIMENTS
SO	EUROPHYSICS LETTERS
AB	We discuss the properties of the solution of polymeric clusters obtained near the gelation threshold by measuring their structure factor using small-angle neutron and light scattering experiments. The distribution of randomly branched clusters, described by percolation theory, leads to a hierarchical interpenetration of clusters. We point out the existence of a length dependent on concentration and characterizing the crossover between fractal and homogeneous structures. Intensity and concentration reduced variables allow us to plot a single master curve for both neutron and light scattering results. The asymptotic behaviours obey scaling laws and are analysed considering recent theoretical arguments.
C1	UNIV STRASBOURG 1,CNRS,URA 851,ULTRASONS & DYNAM FLUIDES COMPLEXES LAB,F-67070 STRASBOURG,FRANCE. UNIV MAINE,CNRS,URA 509,F-72017 LE MANS,FRANCE. CENS,SCM,F-91191 GIF SUR YVETTE,FRANCE.
RP	MUNCH, JP, CENS,SERV PHYS ETAT CONDENSE,F-91191 GIF SUR YVETTE,FRANCE.
TC	5
PD	APR 1
PY	1992
VL	18
IS	7
BP	577
EP	582
UT	ISI:A1992HQ45700002
ER

PT	J
AU	ALEXANDRE, C BELKADI, O MAIGNAN, C
TI	REACTIONS OF DIENOPHILES BEARING GEMINAL SULFINYL AND CARBONYL ELECTRON-WITHDRAWING GROUPS
SO	JOURNAL OF CHEMICAL RESEARCH-S
AB	alpha-Phenylsulfinyl alpha,beta-unsaturated ketones and 2-phenylsulfinylacrylate act as good dienophiles in Diels-Alder reactions to yield cyclohexadiene derivatives.
RP	ALEXANDRE, C, FAC SCI LE MANS,SYNTHESE ORGAN LAB,F-72017 LE MANS,FRANCE.
TC	5
PD	JAN
PY	1992
IS	1
BP	48
EP	49
UT	ISI:A1992HD01000025
ER

PT	J
AU	KANEYOSHI, T LEGAL, G KHATER, A
TI	SURFACE PHASE-DIAGRAM OF A SPIN-1/2 ISING SEMIINFINITE FERROMAGNET WITH A SPIN-3/2 OVERLAYER
SO	PHYSICAL REVIEW B
AB	Phase diagrams of a semi-infinite spin-1/2 Ising ferromagnet with a spin-3/2 overlayer are investigated theoretically. In particular, the effects of surface single-ion anisotropy on the phase diagram and critical value for surface ordering are clarified. Some outstanding features of these quantities are obtained.
C1	NAGOYA UNIV,DEPT PHYS,NAGOYA 46401,JAPAN.
RP	KANEYOSHI, T, UNIV MAINE,PHYS MAT LAB,F-72017 LE MANS,FRANCE.
TC	4
PD	DEC 1
PY	1992
VL	46
IS	21
BP	14190
EP	14193
UT	ISI:A1992KB63400071
ER

PT	J
AU	LEMEECAILLEAU, MH TOUDIC, B CAILLEAU, H MOUSSA, F LECOINTE, M SILLY, G KARL, N
TI	STRUCTURAL ASPECTS OF THE NEUTRAL-TO-IONIC TRANSITION IN AN ORGANIC CHARGE-TRANSFER CRYSTAL - TTF-CHLORANIL
SO	FERROELECTRICS
AB	The structural aspects of the neutral-to-ionic transition in TTF-CA are discussed in relation with recent results on neutron scattering studies, observation of metastable behaviour around the transition and determination of the phase diagram.
C1	CENS,LAB COMMUN CEA CNRS,LAB LEON BRILLOUIN,F-91191 GIF SUR YVETTE,FRANCE. UNIV STUTTGART,INST PHYS,W-7000 STUTTGART 80,GERMANY. UNIV MAINE,SPECT SOLIDE LAB,CNRS,URA 807,F-72017 LE MANS,FRANCE.
RP	LEMEECAILLEAU, MH, UNIV RENNES 1,MAT CONDENSEE & MAT GRP,CNRS,URA 804,F-35042 RENNES,FRANCE.
TC	4
PY	1992
VL	127
IS	1-4
BP	19
EP	24
UT	ISI:A1992JU64400005
ER

PT	J
AU	LALIGANT, Y FEREY, G ELGHOZZI, M AVIGNANT, D
TI	THERMAL STUDY OF LI3THF7 IONIC CONDUCTOR BY NEUTRON-DIFFRACTION - CONDUCTION PATHWAYS
SO	EUROPEAN JOURNAL OF SOLID STATE AND INORGANIC CHEMISTRY
AB	The crystal structure of Li3ThF7 has been refined by Rietveld analysis of neutron powder diffraction data at several temperatures. Li3ThF7 exhibits a phase transition between 295 and 350K, and becomes tetragonal (P4/ncc). Moreover, Li3ThF7 becomes ionic conductor above 500K. Fourier maps revealed that conducting lithium ions move in the a,b plane at the surface of a double layer, and, to a lower extent, between two double layers.
C1	UNIV CLERMONT FERRAND,CHIM SOLIDES LAB,CNRS,URA 444,F-63177 CLERMONT FERRAND,FRANCE.
RP	LALIGANT, Y, UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
TC	4
PY	1992
VL	29
IS	3
BP	497
EP	504
UT	ISI:A1992JE97900011
ER

PT	J
AU	HEMON, A COURBION, G
TI	SYNTHESIS AND CRYSTAL-STRUCTURES OF BETA-NASRCRF6 AND NASRFEF6 - STRUCTURAL CORRELATIONS WITH A2MF6 COMPOUNDS
SO	EUROPEAN JOURNAL OF SOLID STATE AND INORGANIC CHEMISTRY
AB	The crystal structures of the low-temperature form of NaSrCrF6 (beta-form) [Space group P2(1)/c ; a = 5.5676(3)angstrom, b = 9.2937(7)angstrom, c = 9.5858(5)angstrom, beta = 93.201(6)-degrees; Z = 4 ; R = 0.030, R(W) = 0.029 for 2430 independent reflections] and NaSrFeF6 [Space group P2(1)2(1)2(1) ; a = 5.4053(3)angstrom, b = 9.3103(5)angstrom, c = 10.3823(8)angstrom ; Z = 4 ; R = 0.032, R(W) = 0.030 for 2729 independent reflections] have been solved by X-ray diffraction on single crystals grown by chloride flux method. The beta-NaSrCrF6 structure is characterized by isolated [CrF6]3- octahedra and is related to that of NaSrAlF6. In the NaSrFeF6 structure, sodium and iron ions are located in octahedral sites whereas strontium ions show a sevenfold coordination. Infinite chains of edge-sharing octahedra [Na2Fe2F16]n8n- along the b-axis are interconnected by vertices to build up a three-dimensional network, the strontium atoms being located between the chains. An isotypic series of NaSrFeF6 (M3+ = Ti, V, Ga) is evidenced. Finally the NaSrFeF6 structure is compared to those of A2MF6 compounds.
RP	HEMON, A, UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
TC	4
PY	1992
VL	29
IS	3
BP	519
EP	531
UT	ISI:A1992JE97900013
ER

PT	J
AU	GELARD, JP JEBRAK, M PRICHONNET, G
TI	PHANEROZOIC CONSTRAINTS OF THE ST-LAWRENCE PLATFORM IN THE AREA OF MONTREAL (QUEBEC)
SO	CANADIAN JOURNAL OF EARTH SCIENCES
AB	The tectonic evolution of the Appalachian platform is still not well understood. The Montreal area, however, shows evidence of major fracturing events, some of which cut the Cretaceous intrusions. The history of the different stress events recorded in the platform was studied by the analysis of brittle faults and dykes, followed by the calculation, by way inversion of tensors, of the corresponding stresses. The tectonics represented is polyphased and its analysis allows a historical reconstitution of the carbonate and flyschoid platform since the Lower Paleozoic. Five tectonic stages are recognized, corresponding to the major geodynamic events characteristics of northeast North America: (i) early north-south distensional events; (ii) Appalachian compression in a west-northwest-east-southeast direction; (iii) terminal Appalachian compression oriented north-northest-south-southwest; (iv) Cretaceous north-south distension; (v) a Cenozoic to Recent compression in a northwest-southeast direction.
C1	UNIV QUEBEC,DEPT SCI TERRE,RECH GEOL TERRAIN APPL GRP,MONTREAL H3C 3P8,QUEBEC,CANADA.
RP	GELARD, JP, UNIV MAINE,GEOL LAB,F-72017 LE MANS,FRANCE.
TC	4
PD	MAR
PY	1992
VL	29
IS	3
BP	499
EP	505
UT	ISI:A1992HW27800008
ER

PT	J
AU	DANIEL, P GESLAND, JY ROUSSEAU, M
TI	RAMAN-SCATTERING STUDY OF A NEW LASER CRYSTAL - LICAALF6
SO	JOURNAL OF RAMAN SPECTROSCOPY
AB	The Raman spectra of the trigonal LiCaAlF6 crystal were recorded st room temperature and 10 K. Three A1g and eight E(g) Raman lines are expected according to group theory. Based on the polarized Raman spectra, symmetry assignments were made for the 11 predicted Raman-active phonon modes. Throughout the temperature range studied, no drastic evolution of the Raman spectra was observed, which suggests that there is no structural phase transition in LiCaAlF6. Analysis of the Raman spectra was made by comparison with previous studies of several crystal fluorides such as Li2ZrF6.
RP	DANIEL, P, FAC SCI LE MANS,URA 807,AVE OLIVIER MESSIAEN,BP 535,F-72017 LE MANS,FRANCE.
TC	4
PD	APR
PY	1992
VL	23
IS	4
BP	197
EP	200
UT	ISI:A1992HT11500003
ER

PT	J
AU	TEILLET, J DORMANN, JL HAUET, A NOGUES, M VARRET, F ZEMIRLI, M GRENECHE, JM
TI	HIGH-FIELD MOSSBAUER STUDY OF ZN-RICH ZNXMG1-XFE2O4 SPINELS
SO	HYPERFINE INTERACTIONS
AB	The ferrite spinels ZnxMg1-xFe2O4 (x greater-than-or-equal-to 0.8) have been studied at low temperature by high-field Mossbauer spectroscopy. When x increases, the magnetic structure, which is relevant of local canted states, evolves from a randomly canted ferrimagnetic structure towards a randomly canted antiferromagnetic order.
C1	CNRS,MAGNET & MAT MAGNET LAB,F-92195 MEUDON,FRANCE. UNIV MAINE,CNRS,UA 807,F-72017 LE MANS,FRANCE.
RP	TEILLET, J, INST NATL SCI APPL,LMMM,CNRS,URA 808,BP 8,F-76131 MT ST AIGNAN,FRANCE.
TC	4
PY	1991
VL	68
IS	1-4
BP	345
EP	348
UT	ISI:A1991HN20800062
ER

PT	J
AU	KHATER, A AUBY, N KECHRAKOS, D
TI	SURFACE-SURFACE PHONON-SCATTERING BY SURFACE INHOMOGENEITIES
SO	JOURNAL OF PHYSICS-CONDENSED MATTER
AB	A one-dimensional model is presented for surface phonon scattering into surface phonon channels by atomic inhomogeneities along a high symmetry direction in a solid surface. The model yields characteristic resonances over the full Brillouin zone of the model linear chain, for a monoatomic step and an adatom, at the limit of low concentrations where the approximation of an isolated inhomogeneity holds. Additional resonances are found near the step edges for a symmetric double step, these indicate weak localization of surface phonons on a slightly disordered surface. The theoretical results can, in principle, be tested by electron energy loss spectroscopy and He atom surface scattering.
C1	UNIV MAINE,CNRS,URA 807,PHYS MAT LAB,F-72017 LE MANS,FRANCE. UNIV EXETER,DEPT PHYS,EXETER EX4 4Q4,ENGLAND.
RP	KHATER, A, CENS,SERV RECH SURFACES & IRRADIAT MAT,F-91191 GIF SUR YVETTE,FRANCE.
TC	4
PD	APR 6
PY	1992
VL	4
IS	14
BP	3743
EP	3752
UT	ISI:A1992HM85000006
ER

PT	J
AU	LEBAIL, A MERCIER, AM
TI	STRUCTURE OF PB2MNFE2F12.3H2O
SO	ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
AB	Diiron dilead manganese dodecafluoride trihydrate, M(r) = 863.06, hexagonal, P62mBAR, a = 9.320 (1), c = 3.9618 (5) angstrom, V = 298.0 (1) angstrom 3, Z = 1, D(x) = 4.81 Mg m-3, Mo K-alpha, lambda = 0.71069 angstrom, mu = 31.95 mm-1, F(000) = 337, room temperature, R = 0.032 for 845 unique reflections, crystal growth by hydrothermal synthesis in HF solution. The structure presents three chains of MF6 octahedra (M = Fe3+, Mn2+ statistically distributed on the same site) sharing trans corners along [001] and connected by cis corners to form a triple infinite isolated chain of formula [M3F12]n4n-. The structure is related to the CsCrF4 type; however, the Cs-atom site is occupied by the water molecule and the Pb atom occupies a trigonal prism of F atoms tricapped by the water molecules.
RP	LEBAIL, A, UNIV MAINE,FLUORURERS LAB,URA 449,F-72017 LE MANS,FRANCE.
TC	4
PD	FEB 15
PY	1992
VL	48
PN	Part 2
BP	239
EP	241
UT	ISI:A1992HH42800006
ER

PT	J
AU	MINOREL, AM SILLY, G BUZARE, JY
TI	PHASE-TRANSITIONS IN RB1-XKXCAF3 STUDIED BY EPR
SO	FERROELECTRICS
RP	MINOREL, AM, UNIV MAINE,EQUIPE PHYS ETAT CONDENSE,CNRS,URA 807,F-72017 LE MANS,FRANCE.
TC	4
PY	1991
VL	124
IS	1-4
BP	297
EP	302
UT	ISI:A1991HF28800052
ER

PT	J
AU	GAO, Y GUERY, J JACOBONI, C
TI	CRYSTAL-STRUCTURE DETERMINATION OF LIBAZR2F11
SO	EUROPEAN JOURNAL OF SOLID STATE AND INORGANIC CHEMISTRY
AB	LiBaZr2F11 is tetragonal (S.G.: 14/m) with a=8.1837(4)angstrom, c=11.2772(6)angstrom and Z=4. The crystal structure have been solved from single crystal X-ray diffraction data (R=0.022 and R(w)=0.026). The structure is built up from [Zr2F11]n3- layers formed by corner sharing of [Zr4F24]8- planar units (built from 4 edge sharing [ZrF8]4- square antiprisms); the shifted layers are connected via [LiF4]3- tetrahedra and [BaF12]10- polyhedra. LiBaZr2F11 structure can be related to that of Ky3F10 by a cooperative rotation (almost-equal-to 20-degrees) of the [Zr4F24]8- units.
RP	GAO, Y, UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
TC	3
PY	1992
VL	29
IS	6
BP	1243
EP	1252
UT	ISI:A1992KC23000022
ER

PT	J
AU	BENOIST, P LEGEAY, G MORELLO, R PONCINEPAILLARD, F
TI	PREPARATION OF POLYMER SURFACES BY COLD-PLASMA FOR GALVANOCHEMICAL METALLIZATION
SO	EUROPEAN POLYMER JOURNAL
AB	The need for polymers with various specific properties has lead to development of surface treatment. Chemical or mechanical methods are well developed and, for most polymers, adhesion to metal or an adhesive is increased. This paper deals with the activation of polycarbonate, polyamide-66 and polysulphone surface by cold plasma treatment, followed by metallization (deposition of nickel, copper, chromium) through chemical attack in appropriate baths. Many experiments both on activation and on metallization have been performed. For plasma treatment, dependence on gas nature, discharge power and duration of treatment has been studied; for metallization, various industrial baths have been tested. Adhesion measurements indicate that metallization of plasma modified polycarbonate and polyamide was not successful. Polysulphone has been metallized, leading to a peeling strength of 300 gcm-1. Treatments with nitrogen or Ar/O2 plasma with 2 min duration, and with CO2 plasma (duration: 5 min) are efficient. Drastic activation leads to chemical or physical damage of the polymer surface, prejudicial to adhesion.
C1	UNIV MAINE,CNRS,URA 509,CHIM & PHYSICOCHIM MACROMOLEC LAB,AVE OLIVIER MESSIAEN,F-72017 LE MANS,FRANCE. INST RECH APPL POLYMERES,F-72000 LE MANS,FRANCE. SARREL,F-72260 MAROLLES BRAULTS,FRANCE.
TC	3
PD	NOV
PY	1992
VL	28
IS	11
BP	1383
EP	1393
UT	ISI:A1992JX54900011
ER

PT	J
AU	BULOU, A
TI	ON CONSIDERING THE ELASTIC-CONSTANT TABLE AS THE MATRIX OF AN OPERATOR - CONSEQUENCES IN FERROELASTICITY
SO	JOURNAL DE PHYSIQUE I
AB	The consequences of the convention associated with the contraction of the indices of the elastic constant tensor components C(ijkl) are discussed. It is shown that, in order to be handled like the matrix of an operator, the elastic constant table must be written with new conventions : C(alpha-beta)u = C(ijkl) if alpha, beta = 1, 2, 3, C(alpha-beta)u = square-root 2 C(ijkl) if (alpha = 1, 2, 3, and beta = 4, 5, 6) or (alpha = 4, 5, 6 and beta = 1, 2, 3), C(alpha-beta)u = 2 C(ijkl) if alpha, beta = 4, 5, 6. The C(alpha-beta)u are the components of 6 x 6 table [C(u)]. Using for the strains epsilon(ij) the convention u(alpha) = epsilon(ij) if i = j and u(alpha) = square-root 2 epsilon(ij) if i not-equal j, the usual for E = 1/2 C(alpha-beta)u u(alpha) u(beta) for the elastic energy is preserved. It is shown that the terms C(alpha)BAR of the elastic energy written in a diagonal form E = 1/2 SIGMA(alpha=1)6 C(alpha)BAR[E(alpha)]2 where the E(alpha) are the symmetry-adapted strains) are the eigenvalues of the table [C(u)] that can be called matrix of the elastic constants ; the << eigenvalues >> of the elastic constant table defined with the usual conventions do not lead to the right diagonal form in the cases of the tetragonal 4/m, 4BAR, 4 groups and in the cases of the trigonal groups. This result has consequences in the studies of the proper and pseudo-proper ferroelastic phase transitions since they are associated with the softening of one of the C(alpha)BAR. Some arguments showing the advantage of an extension of the conventions proposed in this paper to other kinds of tensors are given.
RP	BULOU, A, UNIV MAINE,FAC SCI,PHYS ETAT CONDENSE LAB,CNRS,URA 807,F-72017 LE MANS,FRANCE.
TC	3
PD	JUL
PY	1992
VL	2
IS	7
BP	1445
EP	1460
UT	ISI:A1992JE58800016
ER

PT	J
AU	SUZZONI, JM AITE, MR GELARD, JP
TI	IDENTIFICATION OF A MULTIDIRECTIONAL DISTENSIVE PERIOD USING MICROTECTONIC ANALYSIS IN THE LANGHIAN DELLYS BASALTS (GREAT KABYLIA, ALGERIA)
SO	COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II
AB	The Langhian basalts near Dellys (Great Kabylia, Algeria) are interbedded in neogene "post-nappes" formations. The microtectonic analysis of the many streaked slickensides in these basalts shows a multidirectional distensive period. This is probably the first tectonic event after the main overthrustings, here considered to be contemporaneous with the opening and filling of the "post-nappes" Tizi-Ouzou basin. Some of the later compressive events, identified in the Tizi-Ouzou basin, are also detected in the basalts.
C1	UNIV TIZI OUZOU,INST NATL ENSEIGNEMENT SUPER,TIZI OUZOU,ALGERIA. UNIV MAINE,GEOL LAB,F-72017 LE MANS,FRANCE.
RP	SUZZONI, JM, UNIV ANGERS,GEOL LAB,2 BLVD LAVOISIER,F-49045 ANGERS,FRANCE.
TC	3
PD	APR 9
PY	1992
VL	314
IS	8
BP	821
EP	827
UT	ISI:A1992HP93700013
ER

PT	J
AU	DESERT, A BULOU, A NOUET, J
TI	RAMAN-SCATTERING STUDY OF KFEF4
SO	JOURNAL OF PHYSICS-CONDENSED MATTER
AB	The layered compound KFeF4 that exhibits a structural phase transition at T(c) congruent-to 380 K from Bmmb symmetry (phase I) to Pcmn symmetry (phase 11) is studied as a function of temperature by polarized Raman scattering. All the Raman lines are attributed on the basis of (i) symmetry analysis of the normal modes of vibration in the aristotype phase (phase I) and the compatibilities relations with the symmetries in phase II; (ii) comparison with RbFeF4 in which the phonon spectrum can be calculated. The phase transition is clearly associated with a soft mode but a residual Raman signal is still observed above T(c); this is attributed to the existence of a disordered phase. Two additional modes exhibit a soft behaviour connected with a (virtual) martensitic transformation.
RP	DESERT, A, UNIV MAINE,FAC MED,PHYS ETAT CONDENSE LAB,CNRS,UNITE RECH 807,F-72017 LE MANS,FRANCE.
TC	3
PD	JAN 27
PY	1992
VL	4
IS	4
BP	1023
EP	1037
UT	ISI:A1992HC70900013
ER

PT	J
AU	LACORRE, P PANNETIER, J PEBLER, J NAGEL, S BABEL, D DEKOZAK, A SAMOUEL, M FEREY, G
TI	ORDERED MAGNETIC FRUSTRATION .17. IS BAMNFEF7 FRUSTRATED - MOSSBAUER-SPECTROSCOPY, MAGNETIC-SUSCEPTIBILITY, AND MAGNETIC-STRUCTURE AT 2-K
SO	JOURNAL OF SOLID STATE CHEMISTRY
C1	INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE. UNIV MARBURG,ZENTRUM MAT WISSENSCHAFT,FACHBEREICH CHEM & WISSENSCHAFT,W-3550 MARBURG,GERMANY. UNIV P & M CURIE,CRISTALLOCHIM SOLIDE LAB,CNRS,URA 1388,F-75252 PARIS 05,FRANCE.
RP	LACORRE, P, UNIV MAINE,FLUORURES LAB,CNRS,URA 449,AVE OLIVIER MESSIAEN,F-72017 LE MANS,FRANCE.
TC	2
PD	DEC
PY	1992
VL	101
IS	2
BP	296
EP	308
UT	ISI:A1992KA92500010
ER

PT	J
AU	DESERT, A BULOU, A NOUET, J HENNION, B PETITGRAND, D
TI	SPIN-WAVE DISPERSION CURVE IN THE 2-DIMENSIONAL ANTIFERROMAGNET KFEF4
SO	SOLID STATE COMMUNICATIONS
AB	The magnetic properties of the two-dimensional antiferromagnet KFeF4 have been studied by inelastic neutron-scattering. The spin-wave dispersion curve is measured in the (hhl) plane at 15K. The existence of a gap (0.65THz) is confirmed. The dispersion along the [00-xi] direction, normal to FeF6 sheets is smaller than the experimental accuracy; on the other hand a strong dispersion is observed along the [xi-xi-0] direction. The dispersion curves are well described by a simple spin-wave theory (H(E) = 211 T, H(A) = 1.3 T, \J\ = 9.8 cm-1 alpha = 6.2 x 10(-3)).
C1	CENS,LAB LEON BRILLOUIN,F-91191 GIF SUR YVETTE,FRANCE.
RP	DESERT, A, UNIV MAINE,PHYS ETAT CONDENSE LAB,CNRS,URA 807,AVE O MESSIAEN,F-72017 LE MANS,FRANCE.
TC	2
PD	AUG
PY	1992
VL	83
IS	7
BP	505
EP	508
UT	ISI:A1992JJ55700010
ER

PT	J
AU	BERGER, L MARIOT, JP LAUNAY, C
TI	A NEW FORMULATION FOR FAST IMAGE-CODING USING QUADTREE REPRESENTATION
SO	PATTERN RECOGNITION LETTERS
AB	This paper presents a new formulation for gray level image coding using quadtree representation. A quadtree is calculated in a recursive bottom-up approach with the aid of a linear homogeneous criterion.
RP	BERGER, L, UNIV MAINE,MECAN PROD & MAT LAB,BP 535,F-72017 LE MANS,FRANCE.
TC	2
PD	JUN
PY	1992
VL	13
IS	6
BP	425
EP	432
UT	ISI:A1992HZ98700004
ER

PT	J
AU	HEMON, A COURBION, G
TI	NEW PENTAMERS OF OCTAHEDRA - STRUCTURAL AND MAGNETIC CHARACTERIZATION OF NA3SR4CR5F26
SO	JOURNAL OF SOLID STATE CHEMISTRY
RP	HEMON, A, UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
TC	2
PD	JUN
PY	1992
VL	98
IS	2
BP	358
EP	365
UT	ISI:A1992HW18100017
ER

PT	J
AU	FOLLIOT, V SOUTIF, JC BROSSE, JC
TI	SYNTHESIS OF CHELATING MOLECULES FOR USE IN DIAGNOSTIC-IMAGING .1. STUDY ON SIMPLE MOLECULES
SO	EUROPEAN POLYMER JOURNAL
AB	In order to obtain compounds similar to EDTA and DTPA, with properties appropriate for medical use, the synthesis of chelating molecules containing aminoacetic groups was investigated. This chelating structure was obtained on organic molecules containing heavy groups (for example on chlorambucil) or on reactive molecules (bis 2-chloroethyl amine) allowing the fixation of a polymerizable group. Chelating ability was investigated with technetium-99m (scintillation camera imaging) and gadolinium (for NMR).
C1	UNIV MAINE,CHIM & PHYSICOCHIM MACROMOLEC LAB,CNRS,URA 509,BP 535,F-72017 LE MANS,FRANCE.
TC	2
PD	MAY
PY	1992
VL	28
IS	5
BP	485
EP	492
UT	ISI:A1992HT53400007
ER

PT	J
AU	LEBAIL, A DUROY, H FOURQUET, JL
TI	CRYSTAL-STRUCTURE AND THERMOLYSIS OF K2(H5O2)AL2F9
SO	JOURNAL OF SOLID STATE CHEMISTRY
RP	LEBAIL, A, UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 499,F-72017 LE MANS,FRANCE.
TC	2
PD	MAY
PY	1992
VL	98
IS	1
BP	151
EP	158
UT	ISI:A1992HR91600017
ER

PT	J
AU	BRUNET, F GIBAUD, A RIDOU, C NOUET, J
TI	PHASE-TRANSITIONS IN K1-XRBXALF4 .1. X-RAY-SCATTERING STUDY
SO	FERROELECTRICS
RP	BRUNET, F, UNIV MAINE,AVE O MESSIAEN,F-72017 LE MANS,FRANCE.
TC	2
PY	1991
VL	124
IS	1-4
BP	315
EP	320
UT	ISI:A1991HF28800055
ER

PT	J
AU	GANOT, F PAPIN, M BULOU, A MOCH, P
TI	PHASE-TRANSITIONS IN K1-XRBXALF4 .2. BRILLOUIN AND ULTRASONIC STUDIES
SO	FERROELECTRICS
C1	UNIV MAINE,FAC SCI,LAB PEC,CNRS,URA 807,F-72017 LE MANS,FRANCE.
RP	GANOT, F, UNIV PARIS 13,LAB PMTM,CNRS,UPR 9001,AVE JB CLEMENT,F-93430 VILLETANEUSE,FRANCE.
TC	2
PY	1991
VL	124
IS	1-4
BP	321
EP	326
UT	ISI:A1991HF28800056
ER

PT	J
AU	BOISSIN, P DHAL, R BROWN, E
TI	LIGNANS .14. STUDY OF BROMINATION IN THE BENZYLIC POSITION OF LIGNAN PRECURSORS - A GENERAL-ROUTE LEADING TO RETROLIGNANS OF THE (-)-ALPHA-CONIDENDRIN SERIES
SO	JOURNAL OF CHEMICAL RESEARCH-S
C1	FAC SCI LE MANS,SYNTHESE ORGAN LAB,CNRS,URA 482,AVE OLIVIER MESSIAEN,BP 535,F-72017 LE MANS,FRANCE.
TC	2
PD	DEC
PY	1991
IS	12
BP	332
EP	332
UT	ISI:A1991HA77200002
ER

PT	J
AU	DELORME, JJ
TI	ON THE DIOPHANTINE EQUATION X1(6)+X2(6)+X3(6)=Y1(6)+Y2(6)+Y3(6)
SO	MATHEMATICS OF COMPUTATION
AB	In this paper, we develop an elementary method for producing parametric solutions of the equation x1(6) + X2(6) + x3(6) = y1(6) + y2(6) + y3(6) by reducing the resolution of a system including it to that of the equation (s1(2) + (s1 + t1)2)(s2(2) + (s2 + t2)2)(s3(2) + (s3 + t3)2). = (t1(2) + (s1 + t1)2)(t2(2) + (s2 + t2)2)(t3(2) + (s3 + t3)2). We give such solutions of degrees 4, 5, 7, 8, 9, and 11.
C1	UNIV MAINE,DEPT MATH & COMP SCI,F-72017 LE MANS,FRANCE.
TC	1
PD	OCT
PY	1992
VL	59
IS	200
BP	703
EP	715
UT	ISI:A1992JV30100027
ER

PT	J
AU	BOUR, B
TI	BIOMEDICAL-RESEARCH, THE HURIET LAW AND NONUNIVERSITY HOSPITALS
SO	GASTROENTEROLOGIE CLINIQUE ET BIOLOGIQUE
RP	BOUR, B, CTR HOSP GEN,SERV HEPATOGASTROENTER,194 AVE RUBILLARD,F-72037 LE MANS,FRANCE.
TC	1
PD	AUG-SEP
PY	1992
VL	16
IS	8-9
BP	718
EP	718
UT	ISI:A1992JU20400018
ER

PT	J
AU	KASSIBA, A BONHOMME, D FAYET, JC GIBAUD, A
TI	ESR AND X-RAYS INVESTIGATIONS OF THE INCOMMENSURATE-COMMENSURATE PHASE-TRANSITION IN RB2ZNCL4 AND [RB(1-X)KX]2ZNCL4
SO	FERROELECTRICS
AB	"Pure" and mixed Bridgman crystals Rb2ZnCl4 and [Rb(1-x)Kx]2ZnCl4, doped in the melt with Mn2+ ions, are studied by E.P.R.and X-rays. In the multisoliton regime,we measure the density of the Mn2+ ions which occupy nearly the same sites as in the commensurate phase, and we obtain an estimation of the thermal evolution of the soliton density Ns(T).Nevertheless, these local measurements do not give any information about their long range ordering and involve measurements on the site occupied by an impurity. Therefore, using samples cleaved from the same Bridgman batch, only doped with Mn2+ ions, we compare the results of X-rays and E.P.R. investigations .
C1	FAC SCI LE MANS,PHYS ETAT CONDENSE LAB,F-72017 LE MANS,FRANCE.
RP	KASSIBA, A, FAC SCI LE MANS,SPECTROSCOPIE SOLIDE LAB,URA 807,F-72017 LE MANS,FRANCE.
TC	1
PY	1992
VL	125
IS	1-4
BP	367
EP	372
UT	ISI:A1992JU26200063
ER

PT	J
AU	VAILLS, Y SIMON, P BUZARE, JY
TI	CSPBCL3 MELTING MONITORED THROUGH EPR OF GD3+
SO	FERROELECTRICS
AB	The E.P.R. spectrum of Gd3+ in cesium lead chloride is reported from 50-degrees-C up to melting, and in the liquid phase, above 615-degrees-C. The temperature dependence of the spin Hamiltonian cubic term b4 is discussed. In the liquid phase, the EPR line presents a Dysonian profile, evidencing noticeable ionic conductivity. No effect of motional narrowing is noted.
C1	UNIV MAINE,SPECT SOLIDE LAB,CNRS,URA 807,F-72017 LE MANS,FRANCE.
RP	VAILLS, Y, CNRS,CTR RECH PHYS HAUTES TEMP,F-45071 ORLEANS 2,FRANCE.
TC	1
PY	1992
VL	125
IS	1-4
BP	407
EP	411
UT	ISI:A1992JU26200070
ER

PT	J
AU	COHEN, Y EMERY, J
TI	EPR EVIDENCE OF FLUCTUATIONS NEAR CRITICAL-TEMPERATURE IN INCOMMENSURATE THBR4GD3+
SO	FERROELECTRICS
AB	We investigate the incommensurate phase of ThBr4 doped with the magnetic probe Gd3+. Near the critical temperature we study two E.P.R. lines, whose sensivity to the first and second order splitting is different. We show that the quadratic term does not behave as (T(I)-T) 2beta and it remains no zero at the transition temperature.
RP	COHEN, Y, UNIV MAINE,SPECT SOLIDE LAB,CNRS,URA 807,F-72017 LE MANS,FRANCE.
TC	1
PY	1992
VL	125
IS	1-4
BP	431
EP	436
UT	ISI:A1992JU26200074
ER

PT	J
AU	BRUNEAU, M BRUNEAU, AM HAMERY, P
TI	MODELS OF MINIATURE MICROPHONES - EFFECTS OF VISCOTHERMAL BOUNDARY-LAYERS
SO	JOURNAL DE PHYSIQUE IV
AB	The purpose of this paper is to calculate the acoustic response of a stretched membrane separated from a rigid electrode by an air film whose thickness is the same order of magnitude as the viscous and thermal boundary layers(in the range of 1-10-mu-m), tacking into account the effect of a very small annular volume.The goal is to obtain an approximate model to describe the behavior of miniaturised condenser microphones designed on a silicon substrate,from the basic equations involving viscous, thermal, and acoustic effects.
RP	BRUNEAU, M, UNIV MAINE,CNRS,ACOUST LAB,URA 1101,BP 535,F-72017 LE MANS,FRANCE.
TC	1
PD	APR
PY	1992
VL	2
IS	C1
PN	Part 1
BP	361
EP	364
UT	ISI:A1992JL22800078
ER

PT	J
AU	ALLARD, JF BROUARD, B LAFARGE, D LAURIKS, W
TI	TIME-REVERSAL AND RECIPROCITY IN SOUND-PROPAGATION THROUGH ELASTIC AND POROUS LAYERS
SO	APPLIED PHYSICS LETTERS
AB	Transmission of plane sound waves through elastic or porous layers involves longitudinal and transverse waves and can be described by equivalent multiport circuits. Different ports on each face of the layer are related to the normal and the tangential strains and velocities. The form of the impedance matrix of the circuits indicates that the coupling between normal and tangential conjugate variables is antireciprocal. This is due to the fact that the angle of incidence changes sign under time reversal.
C1	LAB AKOESTIEK WARMTEGELEIDING,B-3030 HEVERLEE,BELGIUM.
RP	ALLARD, JF, UNIV MAINE,ACOUST LAB,URA 1101,AVE OLIVIER MESSIAEN,BP 535,F-72017 LE MANS,FRANCE.
TC	1
PD	SEP 7
PY	1992
VL	61
IS	10
BP	1166
EP	1167
UT	ISI:A1992JM34100008
ER

PT	J
AU	KUTOYANTS, Y MOURID, T
TI	ESTIMATION FOR THE AUTOREGRESSIVE MODEL WITH DELAYS
SO	COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE I-MATHEMATIQUE
AB	We consider a model of "small diffusion" which is applied to the continuous time autoregressive process. This model is defined by the stochastic differential equation with delays. We describe the asymptotics of the nonparametric estimate of the trend coefficient and then apply this results to the minimum distance parameter estimate of the delays.
C1	LSTA,F-75252 PARIS 05,FRANCE.
RP	KUTOYANTS, Y, UNIV MAINE,FAC SCI,DEPT MATH & INFORMAT,BP 535,F-72017 LE MANS,FRANCE.
TC	1
PD	AUG 13
PY	1992
VL	315
IS	4
BP	455
EP	458
UT	ISI:A1992JK78000018
ER

PT	J
AU	PARIZET, E POLACK, JD
TI	THE INFLUENCE OF AN EARLY REFLECTION UPON SPEECH-INTELLIGIBILITY IN THE PRESENCE OF A BACKGROUND-NOISE
SO	ACUSTICA
AB	A long tradition of research has now established that early reflections improve speech intelligibility: there exists an integration time of about 35 ms within which all reflections contribute to increasing the loudness of the direct sound and thus improve the speech intelligibility. Yet, careful review of the literature shows that most investigations were carried out in the absence of background noise. A series of tests was set up to check whether the "35 ms fusion" rule still holds in the presence of background noise. The listening conditions are similar to those found in a car cabin (low-frequency noise, strong reflection arriving within 10 ms). The tests reveal that the actual word spoken and the speaker's voice dominate over other sources of influence on the results, even for a reflection following 5 ms after the direct sound. Although its energy is actually integrated with that of the direct sound, an early reflection never improves the intelligibility to the same extent as simply raising the voice to the same level. A second series of tests was therefore conducted to investigate the word effect: it was found that this effect is also listener dependent, but no physical correlate could explain it. Nevertheless, the experiments agree in showing that the "fusion" rule does not hold in the presence of background noise.
C1	UNIV MAINE,ACOUST LAB,CNRS,URA 1101,F-72017 LE MANS,FRANCE.
RP	PARIZET, E, DIRECT RECH RENAULT,9-11 AVE 18 JUIN 1940,F-92500 RUEIL MALMAISON,FRANCE.
TC	1
PD	AUG
PY	1992
VL	77
IS	1
BP	21
EP	30
UT	ISI:A1992JL14400003
ER

PT	J
AU	RUBIN, J PALACIOS, E BARTOLOME, J TOMKINSON, J FOURQUET, JL
TI	NH4+ TRANSLATIONAL AND LIBRATIONAL SPECTRUM IN NH4ALF4
SO	PHYSICA B
AB	Inelastic neutron scattering experiments have been carried out on the layer compound NH4AlF4. The energy of the first excited levels of translational and librational motions have been found at 19.5 and 26.2 meV for translations and 46.8 and 56.6 meV for librations. These energies are slightly dependent on temperature, but do not show any significant influence of the order-disorder transition.
C1	UNIV MAINE,FLUORURES LAB,F-72017 LE MANS,FRANCE. RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND.
RP	RUBIN, J, UNIV ZARAGOZA,CSIC,INST CIENCIA MAT ARAGON,E-50009 ZARAGOZA,SPAIN.
TC	1
PD	JUN
PY	1992
VL	180
PN	Part B
BP	723
EP	725
UT	ISI:A1992JD72700050
ER

PT	J
AU	EMERY, JR TABELLOUT, M RANDRIANANTOANDRO, H DURAND, D
TI	ULTRA-ACOUSTIC CHARACTERIZATION OF POLYURETHANE LATTICES
SO	JOURNAL DE PHYSIQUE IV
RP	EMERY, JR, FAC SCI LE MANS,CNRS,URA 807,509 AVE O MESSIAEN,BP 535,F-72017 LE MANS,FRANCE.
TC	1
PD	APR
PY	1992
VL	2
IS	C1
PN	Part 2
BP	775
EP	778
UT	ISI:A1992HP02900055
ER

PT	J
AU	ALLARD, JF LAURIKS, W VERHAEGEN, C
TI	THE ACOUSTIC SOUND FIELD ABOVE A POROUS LAYER AND THE ESTIMATION OF THE ACOUSTIC SURFACE IMPEDANCE FROM FREE-FIELD MEASUREMENTS
SO	JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
AB	An exact evaluation of the acoustic field created by a point source in a semi-infinite fluid above a layer of another fluid of finite thickness is worked out. A method of measuring the characteristic impedance and the propagation constant in a layer by a two-microphone technique is presented. An example is given where the semi-infinite fluid is air and the layer is a fluid equivalent to a porous material.
C1	KATHOLIEKE UNIV LEUVEN,DEPT NAT KUNDE,AKOESTIEK & WARMTEGELEIDING LAB,B-3001 HEVERLEE,BELGIUM.
RP	ALLARD, JF, FAC SCI MANS,ACOUST LAB,CNRS,URA 1101,BP 535,AVE OLIVIER MESSIAEN,F-72017 LE MANS,FRANCE.
TC	1
PD	MAY
PY	1992
VL	91
IS	5
BP	3057
EP	3060
UT	ISI:A1992HT68800060
ER

PT	J
AU	BENTRUP, U LEBAIL, A DUROY, H FOURQUET, JL
TI	POLYMORPHISM OF CSALF4 - SYNTHESIS AND STRUCTURE OF 2 NEW CRYSTALLINE FORMS
SO	EUROPEAN JOURNAL OF SOLID STATE AND INORGANIC CHEMISTRY
AB	By dehydration of Cs[AlF4(H2O)2], three new forms of CsAlF4 are clearly evidenced. Structures of the crystallized beta and gamma forms are determined from X-ray powder diffraction data. The third new form is amorphous and gives by heating beta-CsAlF4 (I4c2BAR), Z = 20, a = 11.8101(4) angstrom, c = 13.3741(6) angstrom) isotypic with beta-RbAlF4. This beta form transforms irreversibly into gamma-CsAlF4 (Pnma, Z = 12, a = 10.5576(6) angstrom, b = 6.7500(4) angstrom, c = 17.5954(9) angstrom, the structure of which presents a new type of infinite and condensed (AlF4)n(n-) chains, built up from (AlF6) octahedra.
C1	ZENT INST ANORGAN CHEM,O-1199 BERLIN,GERMANY.
RP	BENTRUP, U, UNIV MAINE,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
TC	1
PY	1992
VL	29
IS	2
BP	371
EP	381
UT	ISI:A1992HP83600018
ER

PT	J
AU	OSTORERO, J GUILLOT, M LEBLANC, M ROUET, D
TI	FARADAY-ROTATION OF PURE AND SUBSTITUTED COBALT FERRITE SINGLE-CRYSTALS
SO	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
AB	Faraday rotation measurements have been performed on single crystals of CoFe2O4, CoFe2-xAlxO4 (x = 0.27) and Co1-yCdyFe2O4 (y = 0.25) at 1150 nm wavelength as a function of temperature (5 less-than-or-equal-to T less-than-or-equal-to 580 K). The magnetic field up to 2 T was applied along two crystallographic orientations [100] and [111]. Results show a very strong anisotropy of magnetic origin due to Co2+ and/or tetrahedral site occupancy. Crystal structure determinations show that Al3+ substitution in pure CoFe2O4 increases the tetrahedral Co2+ amount, leading to a strong decrease of the absolute FR.
C1	MAX PLANCK INST SOLID STATE RES,SNIC,CNRS,F-38042 GRENOBLE,FRANCE. UNIV MAINE,FLUORURES LAB,F-72017 LE MANS,FRANCE.
RP	OSTORERO, J, CNRS,MAGNETISME MAGNET LAB,1 PL ARISTIDE BRIAND,F-92190 MEUDON,FRANCE.
TC	1
PD	FEB
PY	1992
VL	104
PN	Part 1
BP	425
EP	426
UT	ISI:A1992HH32600189
ER

PT	J
AU	ABDALIAN, AT DESERT, A DUGAUTIER, C BULOU, A MOCH, P NOUET, J
TI	MAGNON RAMAN-SCATTERING IN THE 2-DIMENSIONAL ANTIFERROMAGNET KFEF4
SO	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
AB	We report the observation of one-magnon and two-magnon Raman scattering in the two-dimensional antiferromagnet KFeF4. The magnetic exchange and the anisotropy field values are derived from the experimental data. The exchange interaction slightly but significantly differs from the measured one using inelastic neutron scattering. The high value of the anisotropy field, compared to the predicted one, is confirmed.
C1	UNIV MAINE,FAC SCI,LAB PEC,CNRS,URA 807,F-72017 LE MANS,FRANCE.
RP	ABDALIAN, AT, UNIV PARIS 13,PROPRIETIES MECAN & THERMODYNAM MAT LAB,CNRS,UPR 9001,F-93430 VILLETANEUSE,FRANCE.
TC	1
PD	FEB
PY	1992
VL	104
PN	Part 2
BP	1047
EP	1048
UT	ISI:A1992HH32700135
ER

PT	J
AU	BUZARE, JY BERLINGER, W MULLER, KA
TI	CRITICAL-BEHAVIOR OF [110]-STRESSED RBCAF3
SO	FERROELECTRICS
C1	IBM CORP,ZURICH RES LAB,CH-8803 RUSCHLIKON,SWITZERLAND.
RP	BUZARE, JY, UNIV MAINE,EQUIPE PHYS ETAT CONDENSE,CNRS,URA 807,F-72017 LE MANS,FRANCE.
TC	1
PY	1991
VL	124
IS	1-4
BP	303
EP	308
UT	ISI:A1991HF28800053
ER

PT	J
AU	DANIEL, P BULOU, A ROUSSEAU, M NOUET, J
TI	STRUCTURAL PHASE-TRANSITIONS AND LATTICE-DYNAMICS IN THE TRIFLUORIDES MF3 (M = AL, CR, GA, V, FE, IN...)
SO	PHASE TRANSITIONS
RP	DANIEL, P, UNIV MAINE,FAC SCI,CNRS,URA 807,PHYS ETAT CONDENSE LAB,ROUTE LAVAL,F-72017 LE MANS,FRANCE.
TC	1
PY	1991
VL	33
IS	1-4
PN	Part B
BP	91
EP	97
UT	ISI:A1991HC56000013
ER

PT	J
AU	BULOU, A DEBIECHE, M NOUET, J GANOT, F DUGAUTIER, C MOCH, P
TI	PHASE-TRANSITIONS IN TETRAFLUOROALUMINATES RBALF4 AND KALF4 - BRILLOUIN-SCATTERING AND ULTRASONIC PROPAGATION
SO	PHASE TRANSITIONS
C1	UNIV PARIS 13,CNRS,A9001,PMTM LAB,CSP,F-93430 VILLETANEUSE,FRANCE.
RP	BULOU, A, UNIV MAINE,CNRS,UA 807,PHYS ETAT CONDENSE LAB,ROUTE LAVAL,F-72017 LE MANS,FRANCE.
TC	1
PY	1991
VL	33
IS	1-4
PN	Part B
BP	99
EP	104
UT	ISI:A1991HC56000014
ER

PT	J
AU	COLOMBAT, P GUILHOT, F BORDESOULE, D RENOU, P BENZLEMOINE, E FOUILLARD, L DROUET, M TANZER, J LAMAGNERE, JP
TI	INTENSIVE TREATMENT OF STAGE III-IV AGGRESSIVE MALIGNANT-LYMPHOMAS (PROTOCOL TPL-84)
SO	HAEMATOLOGICA
AB	Background. Much progress has been made in the last ten years in the treatment of non Hodgkin's lymphomas by increasing drug schedules and by using non cross-resistant regimens. Methods. So we decided in 1984 to test a new multiple drug procotol (Tours-Poitiers-Limoges = TPL protocol) which used a sequence of three courses of classical high-dose induction therapy, three courses of consolidation therapy using Teniposide, Cytosine Arabinoside, L Asparaginase and high-dose Methotrexate, and three courses of late intensification using the same drugs as induction therapy. Results. Thirty-eight patients younger than 60 years were included. Complete remission was obtained in 27 patients (71%). The median follow-up was 3 years and 9 months with one third of CR patients having been followed beyond 5 years. Seven patients relapsed (26% of CR patients) and one died of toxicity in complete remission. At present 22 patients (58%) are in complete remission, 19 in first CR, 1 in first CR after allogenic bone marrow transplantation, and 2 in second prolonged CR after autologous bone marrow transplantation. The median survival time is 48 months and the actuarial disease-free survival curve seems to have a plateau at 48.5%, with no relapse after 24 months. Conclusions. These results confirm the efficacy of alternating high-dose conventional chemotherapy in the treatment of intermediate and high-grade NHL, with about half of the patients being cured. However, more intensive chemotherapy regimens are needed to improve cure rates.
C1	CHU BRETONNEAU,DEPT HAEMATOL & ONCOL,F-37044 TOURS,FRANCE. HOP JEAN BERNARD,DEPT HAEMATOL & ONCOL,F-86021 POITIERS,FRANCE. CTR HOSP LIMOGES,DEPT HAEMATOL,F-87000 LIMOGES,FRANCE. CHR LE MANS,DEPT MED,SERV REILLY,F-72017 LE MANS,FRANCE.
TC	1
PD	NOV-DEC
PY	1991
VL	76
IS	6
BP	479
EP	484
UT	ISI:A1991GW16200006
ER

PT	J
AU	PECQUENARD, L LEPRIOL, C COMBE, M VIGUE, JP ALMERAS, M
TI	RUPTURE OF THE CATHETER ON IMPLANTABLE SITE - A RARE COMPLICATION - 2 CASE-REPORTS
SO	BULLETIN DU CANCER
AB	Seventy three venous access ports of the same type have been implanted recently in our hospital. We have observed two cases of catheter's rupture. Both accidents show a lot of similarities: material of the same trade mark; same way of implantation: right subclavian vein; rupture before one year; rupture at the point of entry of the subclavian vein; migration of the distal part of catheter; withdrawal of this part by right femoral vein's catheterism. Both broken catheters and another not broken (implanted during more than one year) were tested. It appears that those catheters were weakened, especially around the rupture. The reason is the long-standing compression of the catheter at the narrow space between clavicle and first rib. Then, the rupture of this weakened catheter could have been produced by the high pressure due to injection with small syringes.
C1	CTR HOSP LE MANS,SERV ANESTHESIE REANIMAT,F-72037 LE MANS,FRANCE. CTR HOSP LE MANS,SERV RADIOL,F-72037 LE MANS,FRANCE.
RP	PECQUENARD, L, CTR HOSP LE MANS,SERV MED INTERNE ONCOL,194 AVE RUBILLARD,F-72037 LE MANS,FRANCE.
TC	1
PY	1991
VL	78
IS	11
BP	1027
EP	1036
UT	ISI:A1991GV82100004
ER

PT	J
AU	DUCHAMP, A
TI	DELTA-MATROIDS WHOSE FUNDAMENTAL GRAPHS ARE BIPARTITE
SO	LINEAR ALGEBRA AND ITS APPLICATIONS
AB	We consider a generalization of finite matroids called delta matroids. This structure has been introduced simultaneously by A. Bouchet and, with pseudomatroids, by R. Chandrasekaran and S. N. Kabadi. It turns out that generalized matroids of E. Tardos and the metroids of A. Dress and T. Havel are just special cases of delta matroids. Let delta = (V, F) be a delta matroid. For any F is-an-element-of F, the fundamental graph G(F)delta is the simple graph on the vertex set V whose edge set is {xy:x not-equal y, F triangle {x, y} is-an-element-of F}. Given an even delta matroid-delta and an element F of F, A. Bouchet proved that G(F)delta is bipartite if and only if delta is equivalent to a matroid. We extend this result to general delta matroids in two natural ways, and we characterize the corresponding delta matroids by excluded minors.
RP	DUCHAMP, A, UNIV MAINE,DEPT MATH & INFORMAT,F-72017 LE MANS,FRANCE.
TC	1
PD	JAN 1
PY	1992
VL	160
BP	99
EP	112
UT	ISI:A1992GU71400005
ER

PT	J
AU	LAULIER, M LEJUEZ, R
TI	STUDY ON THE COMPLEX OF INTERFERTILE SPECIES SPHAEROMA-LEVII, S-HOOKERI AND S-RUGICAUDA - EXPERIMENTAL FECONDITY ANALYSIS
SO	BULLETIN DE LA SOCIETE ZOOLOGIQUE DE FRANCE-EVOLUTION ET ZOOLOGIE
RP	LAULIER, M, UNIV MAINE,FAC SCI,BIOL ANIM LAB,F-72017 LE MANS,FRANCE.
TC	0
PY	1992
VL	117
IS	3
BP	334
EP	334
UT	ISI:A1992KC32200010
ER

PT	J
AU	SEO, YB CASTAGNEDE, B MARK, RE
TI	AN OPTIMIZATION APPROACH FOR THE DETERMINATION OF INPLANE ELASTIC-CONSTANTS OF PAPER
SO	TAPPI JOURNAL
AB	An accurate method for the determination of the in-plane shear modulus G(xy) of machine-made paper is given here. This work is the extension of an earlier paper, where it was shown that G(xy) and the in-plane Poisson ratio upsilon(xy) are recoverable from measurements of the Young modulus E(THETA) and the shear modulus G(THETA) conducted at various orientation angles. However, reliable values for G(xy) are very difficult to obtain. Here we show that G(xy) can be accurately extracted with only a few data for E versus orientation angle plus one good value for upsilon(xy). The latter may be measured by a laser speckle photography technique. The influence of the number of data, the precision of these data, and the angular spacing between data points are described by numerical simulations based on large perturbation analysis. Also, a simple criterion is established for the optimum angular region (the so-called minimum error boundary) where the needed measurements should be performed to achieve the very best accuracy in the determination Of G(xy).
C1	SUNY COLL ENVIRONM SCI & FORESTRY,EMPIRE STATE PAPER RES INST,SYRACUSE,NY 13210. UNIV MAINE,ACOUST LAB,F-72017 LE MANS,FRANCE.
RP	SEO, YB, INT PAPER CO,LONG MEADOW RD,TUXEDO PK,NY 10987.
TC	0
PD	NOV
PY	1992
VL	75
IS	11
BP	209
EP	214
UT	ISI:A1992JW63500026
ER

PT	J
AU	MORANTAVICE, A COUDRET, A
TI	TRANSPIRATION VARIATIONS OF SECALE-CEREALE TO OSMOTIC-STRESS UNDER ANOXIA AND PARTIAL-PRESSURE OF CO-2
SO	PLANT PHYSIOLOGY AND BIOCHEMISTRY
AB	An osmotic stress induced by addition of 86 mM NaCl in root medium enhanced a transient increase of transpiration rate of the rye in presence of oxygen both in light and in darkness. When the shoot was swept by moist N2 and 15 Pa CO2 atmosphere, photosynthetic oxygen produced in light was sufficient to permit an increase of transpiration flux after the stress application. In darkness and under anoxia (N2 + 15 Pa CO2), osmotic stress application did not induce stomatal supraopening in dry or moist atmosphere. Oxygen was not requisite to stomatal closure after osmotic stress application.
C1	UNIV CLERMONT FERRAND,PHYSIOL & GENET VEGETALES LAB,F-63000 CLERMONT FERRAND,FRANCE.
RP	MORANTAVICE, A, UNIV MAINE,BIOL & PHYSIOL VEGETALES LAB,BP 535,F-72017 LE MANS,FRANCE.
TC	0
PD	SEP-OCT
PY	1992
VL	30
IS	5
BP	505
EP	509
UT	ISI:A1992JV85000001
ER

PT	J
AU	BULOU, A HUCKETT, S GARCIA, E SWANSON, BI KWEI, GH ECKERT, J
TI	STRUCTURAL PHASE-TRANSITION IN THE QUASI-ONE-DIMENSIONAL PTCL
SO	FERROELECTRICS
AB	We report on the pulsed neutron powder diffraction study of the high and low temperature phases of [Pt(en)2][Pt(en)2Cl2](ClO4)4 (where en=ethylenediamine), referred to as PtCl, that undergoes a structural phase transition at 19.8-degrees-C. It is shown that the high and low temperature phases are orthorhombic and monoclinic, respectively. The transition is associated with a very large shear (3.9-degrees) and the translational group of the low temperature phase is not a subgroup of the high temperature phase translational group ; this supports the first order character proposed earlier.
C1	UNIV MAINE,LAB PEC,F-72017 LE MANS,FRANCE. LOS ALAMOS NATL LAB,LANSCE,LOS ALAMOS,NM 87545.
RP	BULOU, A, LOS ALAMOS NATL LAB,INC-4,MS-C345,LOS ALAMOS,NM 87545.
TC	0
PY	1992
VL	125
IS	1-4
BP	45
EP	50
UT	ISI:A1992JU26200010
ER

PT	J
AU	BONHOMME, D KASSIBA, A FAYET, JC
TI	CRITICAL-BEHAVIOR OF RB2ZNCL4 - MN2+ NEAR TI THROUGH EPR-SPECTROSCOPY
SO	FERROELECTRICS
AB	We search for the signs of a (X-Y) like behaviour of Rb2ZnCl4 : Mn2+ close to Ti = 30-degrees-C, the temperature of the paraelectric-incommensurate phase transition.
RP	BONHOMME, D, FAC SCI LE MANS,SPECTROSCOPIE SOLIDE LAB,URA 807,F-72017 LE MANS,FRANCE.
TC	0
PY	1992
VL	125
IS	1-4
BP	105
EP	110
UT	ISI:A1992JU26200020
ER

PT	J
AU	HOULBERT, S LAURAT, P FAYET, JC
TI	PERTURBATION OF THE XY LIKE SYSTEM RBA1F4CR3+ (TC=290K) BY INBUILT MECHANISMS IN AS GROWN SAMPLES - AN EPR INVESTIGATION
SO	FERROELECTRICS
AB	Using E. S. R. spectroscopy, we search for (3XY) features in the critical behaviour of the RbAlF4:Cr3+ system, at the n=2, second order transition close to Tc = 290K.
RP	HOULBERT, S, UNIV MAINE,SPECTROSCOPIE SOLIDE LAB,URA 807,AVE OLIVIER MESSIAEN,F-72017 LE MANS,FRANCE.
TC	0
PY	1992
VL	125
IS	1-4
BP	373
EP	378
UT	ISI:A1992JU26200064
ER

PT	J
AU	SILLY, G EMERY, J
TI	PI CHARACTER OF THE CHARGE TRANSFERRED ELECTRONIC DENSITY IN THE CHARGE-TRANSFER CRYSTAL TTF-CA EVIDENCED BY EPR
SO	FERROELECTRICS
AB	We report some results about E.P.R. investigations in the Tetrathiafulvalene-chloranile charge transfert complex. We specially investigated the E.P.R. line intensity anisotropy, and we analyse it in terms of anisotropic spin orbit coupling. Our opinion is that this result is an evidence of the pi character of the transferred electron.
RP	SILLY, G, UNIV MAINE,SPECT SOLIDE LAB,CNRS,URA 807,F-72017 LE MANS,FRANCE.
TC	0
PY	1992
VL	125
IS	1-4
BP	413
EP	418
UT	ISI:A1992JU26200071
ER

PT	J
AU	GILBERT, J DALMONT, JP
TI	NONHARMONICITY AND QUARTER-TONE SAXOPHONE
SO	JOURNAL DE PHYSIQUE IV
AB	The playing frequency of a reed instrument, in normal playing mode, is near the resonance frequency of the resonator. The ease of playing is related to the harmonicity of the first resonance frequencies. We show here that for both case it is more satisfying to consider the resonator added with the equivalent volume to the reed instead of the resonator only.
RP	GILBERT, J, UNIV MAINE,UFR SCI,ACOUST LAB,CNRS,URA 1101,BP 535,AVE OLIVIER MESSIAEN,F-72017 LE MANS,FRANCE.
TC	0
PD	APR
PY	1992
VL	2
IS	C1
PN	Part 1
BP	71
EP	74
UT	ISI:A1992JL22800012
ER

PT	J
AU	MEYNIAL, X GILBERT, J HIRSCHBERG, A
TI	EXPERIMENTAL-STUDY OF INPUT SIGNALS OF A SIMPLE RESONATOR WITH A SINGLE REED
SO	JOURNAL DE PHYSIQUE IV
AB	A device simulating the embouchure of a clarinet or a saxophone player is presented together with the transducers deriving input signals relevant for the oscillations models. Analysis of the results shows the influence of the volume "pumped" by the reed. Measurements in stationnary mode are compared with the existing models in order to validate the quasi-stationnary hypothesis.
C1	EINDHOVEN UNIV TECHNOL,DEPT APPL PHYS,FLUID DYNAM & HEAT TRANSFER LAB,5600 MB EINDHOVEN,NETHERLANDS.
RP	MEYNIAL, X, UNIV MAINE,UFR SCI,ACOUST LAB,CNRS,URA 1101,AVE OLIVIER MESSIAEN,BP 535,F-72017 LE MANS,FRANCE.
TC	0
PD	APR
PY	1992
VL	2
IS	C1
PN	Part 1
BP	75
EP	78
UT	ISI:A1992JL22800013
ER

PT	J
AU	KERGOMARD, J KHETTABI, A
TI	STUDY ON WAVE-GUIDE BRANCHING USING MODAL METHOD - APPLICATION TO REACTIVE SILENCERS AND WIND INSTRUMENTS
SO	JOURNAL DE PHYSIQUE IV
AB	The shape of an equivalent electrical circuit for a guide with side branch is obtained using modal theory in matricial formalism, in a general system of coordinates.
RP	KERGOMARD, J, UNIV MAINE,ACOUST LAB,CNRS,URA 1101,ROUTE LAVAL,BP 535,F-72017 LE MANS,FRANCE.
TC	0
PD	APR
PY	1992
VL	2
IS	C1
PN	Part 1
BP	85
EP	88
UT	ISI:A1992JL22800015
ER

PT	J
AU	MEILLIER, JL LAROCHE, J
TI	EXTRACTING THE TRANSIENT FROM PERCUSSIVE SOUNDS
SO	JOURNAL DE PHYSIQUE IV
AB	This work is concerned with the modeling of percussive acoustical signals, and focuses mostly on the sound's non-stationary onset. The original signal is modeled by a resonating filter fed with a short excitation-signal. The resonating filter reflects the acoustical properties of the instrument's body (frequencies and damping factors of the vibration modes), and the excitation signal models the way the instrument was set into vibration, The resonating filter is calculated by use of a cumulated time-frequency representation of the original signal. The excitation signal is obtained by use of inverse filtering with an optional regularization procedure. Analysis examples are given and some applications are proposed and discussed.
C1	TELECOM PARIS,F-75634 PARIS 13,FRANCE.
RP	MEILLIER, JL, UNIV MAINE,ACOUST LAB,ROUTE LAVAL,BP 535,F-72017 LE MANS,FRANCE.
TC	0
PD	APR
PY	1992
VL	2
IS	C1
PN	Part 1
BP	89
EP	91
UT	ISI:A1992JL22800016
ER

PT	J
AU	DALMONT, JP
TI	INFINITE SERIES OF RESONATORS WITH HARMONIC RESONANCE FREQUENCIES
SO	JOURNAL DE PHYSIQUE IV
AB	We present a family of resonators which have harmonic resonance frequencies but in which some resonances are missing. Each resonator is composed by a succession of N cylinders of the same length. The cross-section area of each cylinder is equal to i(i+1)/2 times the cross-section area of the first cylinder (for i=1 to N) and the last cylinder in open. All the resonance frequencies are harmonic with F1 the lowest resonance frequency. However all multiples of (N+1)F1 correspond to antiresonance frequencies.
RP	DALMONT, JP, UNIV MAINE,ACOUST LAB,CNRS,URA 1101,BP 535,F-72017 LE MANS,FRANCE.
TC	0
PD	APR
PY	1992
VL	2
IS	C1
PN	Part 1
BP	109
EP	112
UT	ISI:A1992JL22800021
ER

PT	J
AU	MEYNIAL, X POLACK, JD DODD, G
TI	COMPLETE EVALUATION OF A ROOM - CASE OF THE THEATER-MUNICIPAL-DU-MANS (FRANCE)
SO	JOURNAL DE PHYSIQUE IV
AB	First we present the equipment used for objective measurements both in the hall and in the 1:50 model, the accuracy of the measurements, and the results of the measurements. Examination of these results lead us to distinguish between two possible uses of models in room acoustics corresponding to two levels of precision in model realisation. Results of the subjective tests carried out in the theatre are looked at in terms of their correlations with objective measurements, and observations on the relevance of such tests for characterising a hall are derived. Specially, we believe the audition-vision interaction can't be ignored.
C1	UNIV AUCKLAND,SCH ARCHITECTURE,ACOUST RES CTR,AUCKLAND,NEW ZEALAND.
RP	MEYNIAL, X, UNIV MAINE,ACOUST LAB,BP 535,AVE O MESSIAEN,F-72017 LE MANS,FRANCE.
TC	0
PD	APR
PY	1992
VL	2
IS	C1
PN	Part 1
BP	155
EP	158
UT	ISI:A1992JL22800031
ER

PT	J
AU	LURIE, A MESTIRI, M HUCHON, G MARSAC, J LOCKHART, A STRAUCH, G
TI	METHODS FOR CLINICAL-ASSESSMENT OF EXPECTORANTS - A CRITICAL-REVIEW
SO	INTERNATIONAL JOURNAL OF CLINICAL PHARMACOLOGY RESEARCH
AB	The purpose of the paper is to discuss some aspects of the methods that are most appropriate for the clinical assessment of new expectorants. Expectorants are drugs devised to help in the removal of bronchial secretions. The evaluation of these drugs is aimed at demonstrating, in controlled trials, their efficacy, safety and, if possible, mechanism of action. Unfortunately, there is no universally accepted assessment technique available. Evaluation of symptoms with the use of self-reported measures is imprecise. Studies of quality of life can assist as a means of assessing the usefulness of this class of drug for patients. Lung function tests evaluate only the possible indirect effects of expectorants; the changes observed are often minor and they do not correlate with other methods of evaluation. Mucociliary clearance studies evaluate bronchial drainage by mucociliary transport and cough. They are a useful pharmacological approach but they cannot replace therapeutic trials. In vitro and ex vivo studies of bronchial secretion, while improving knowledge of the mechanisms of bronchial secretion, fail to predict the modifications of bronchial drainage produced in vivo by cough or mucociliary transport. To be considered efficient, expectorants should not only ease the removal of bronchial secretions, but also improve the patient's condition for the duration of treatment.
C1	UNIV RENE DESCARTES,HOP AMBROISE PARE,SERV PNEUMOL,BOULOGNE,FRANCE. HOP INTERCOMMUNAL CRETEIL,CRETEIL,FRANCE. HOP ANTOINE BECLERE,CLAMART,FRANCE. HOP BEAUJON,CLICHY,FRANCE. CTR HOSP REG BRABOIS,VANDOEUVRE NANCY,FRANCE. FAC MED VANDOEUVRE NANCY,VANDOEUVRE NANCY,FRANCE. HOP COCHIN,SERV PNEUMOL,F-75674 PARIS 14,FRANCE. HOP BICHAT,F-75877 PARIS 18,FRANCE. INSERM,U21,F-94800 VILLEJUIF,FRANCE. CTR HOSP LE MANS,LE MANS,FRANCE. HOP HENRI MONDOR,F-94010 CRETEIL,FRANCE. INSERM,U314,REIMS,FRANCE. GRP HOSP PITIE SALPETRIERE,DEPT PHARMACOL CLIN,F-75634 PARIS 13,FRANCE. INSERM,U16,F-59045 LILLE,FRANCE. HOP CANTONAL GENEVA,CH-1211 GENEVA 4,SWITZERLAND.
RP	LURIE, A, HOP COCHIN,ECLIMED INST RECH THERAPEUT,27 RUE FAUBOURG ST JACQUES,F-75674 PARIS 14,FRANCE.
TC	0
PY	1992
VL	12
IS	1
BP	47
EP	52
UT	ISI:A1992JJ35600006
ER

PT	J
AU	ELALAOUI, M DAOUDI, Y BUSNEL, JP PLEURDEAU, A
TI	SYNTHESIS OF NEW UV-ABSORBING STABILIZERS FOR MACROMOLECULAR-MATERIALS USING COOLIGOMERIZATION
SO	EUROPEAN POLYMER JOURNAL
AB	New u.v.-absorbing stabilizers for polymers have been synthesized by using cooligomerization. The u.v.-absorbing structure (2,4-dihydroxybenzophenone) has been converted into a monomer by reacting it with acryloyl chloride; the reactivity of the resulting monomer has been studied and cooligomerization condition have been optimized when using n-butyl mercaptan as transfer agent.
C1	UNIV MAINE,PHYSICOCHIM MACROMOLEC LAB,URA 509,F-72017 LE MANS,FRANCE.
TC	0
PD	JUN
PY	1992
VL	28
IS	6
BP	601
EP	607
UT	ISI:A1992JA24100005
ER

PT	J
AU	POLACK, JD NEZAN, S
TI	RELAXATION IN THERMOVISCOUS GASES - COMPARISON OF THEORY AND EXPERIENCE
SO	JOURNAL DE PHYSIQUE IV
AB	The classical formalism for sound propagation in thermoviscous gases is modified to include relaxation. A complex attenuation coefficient is then deduced and verified experimentally.
RP	POLACK, JD, UNIV MAINE,ACOUST LAB,CNRS,URA 1101,BP 535,F-72017 LE MANS,FRANCE.
TC	0
PD	APR
PY	1992
VL	2
IS	C1
PN	Part 2
BP	801
EP	804
UT	ISI:A1992HP02900061
ER

PT	J
AU	MONTRESOR, S VALIERE, JC
TI	COMPARISON OF 2 INTERPOLATION METHODS FOR PROCESSING OF IMPULSE NOISES
SO	JOURNAL DE PHYSIQUE IV
AB	In the field of old recordings restoration, we compare two interpolation methods in order to remove degradations causes by impulse noises. The first one, worked out by Janssen et al, is the adaptive interpolation. The autoregressive model on which it is based, is assumed to be a good model for the signal. The second one based on wavelet transform has been developped by using an orthogonal function base. The interpolation is performed not on the signal but on the wavelet coefficients. In the present paper we evaluate and compare these methods in terms of objective criteria. The database used for the evaluation consist in real and synthetic signals with different signal to noise ratio corresponding to many situations encountered in the field of old recordings restoration.
C1	UNIV MAINE,ACOUST LAB,CNRS,URA 1101,F-72017 LE MANS,FRANCE.
RP	MONTRESOR, S, UNIV MAINE,INFORMAT LAB,AVE OLIVIER MESSIAN,BP 535,F-72017 LE MANS,FRANCE.
TC	0
PD	APR
PY	1992
VL	2
IS	C1
PN	Part 2
BP	1121
EP	1124
UT	ISI:A1992HP02900133
ER

PT	J
AU	CROSNIER, MP DELARUE, E CHOISNET, J FOURQUET, JL
TI	LI+/H+ EXCHANGE ON LI2TITEO6
SO	EUROPEAN JOURNAL OF SOLID STATE AND INORGANIC CHEMISTRY
AB	Li+ ions can be exchanged for protons in Li2TiTeO6 (S.G. Pnn2, Z = 2, a = 5.072(1) angstrom, b = 4.903(1) angstrom, c = 8.402(2) angstrom) giving the series Li2(1-x)H2xTiTeO6. The powder diffraction patterns are close to that of Li2TiTeO6. For x < 0.8, the orthorhombic symmetry of the starting material and the initial Ti/Te ordering are maintained (S.G. Pnn2, Z = 2). But, for x > 0.8, we observe a migration of Ti atoms in a preserved anionic network, involved by the departure of the last Li atoms. In a first step, the structure get settled in a trirutile system with cationic vacancies (centric space group Pnnm). Then, a concerted migration of Ti atoms, obtained by further heating, gives an ordered trirutile phase (acentric space group P42nm). The structures are refined by a modified Rietveld method applied to the X-Ray diffraction patterns. This study illustrates a new example of topotactic mechanism involved in the Li+/H+ exchange reactions on complex oxides.
C1	UNIV ORLEANS,CTR RECH MATIERE DIVISEE,UNIV LAB CRISTALLOCHIM,CNRS,F-45067 ORLEANS,FRANCE.
RP	CROSNIER, MP, UNIV MAINE,FAC SCI,FLUORURES LAB,CNRS,URA 449,F-72017 LE MANS,FRANCE.
TC	0
PY	1992
VL	29
IS	2
BP	321
EP	332
UT	ISI:A1992HP83600014
ER

PT	J
AU	DAMAY, M CHEVALIER, MC GOURAUD, F JABADO, N VARACHE, C LANDMANPARKER, J LEVERGER, G
TI	CANDIDA-ALBICANS MENINGITIS WITHOUT OTHER LOCALIZATION AFTER CHEMOTHERAPY FOR LYMPHOMA-B
SO	ARCHIVES FRANCAISES DE PEDIATRIE
AB	A case of candida meningitis occurring in a child treated for a lymphoma is reported. Diagnosis was made with Candida albicans culture in the CSF. Blood cultures were negative. Cerebral CT scan was normal. No other localization was found. The child was successfully treated by amphotericin B (initially with 5-fluorocytosin). Fluconazole was continued orally later on. This case is noteworthy by the absence of other localization, the favourable evolution and its occurrence in childhood. The therapeutic attitude and prevention are discussed.
C1	HOP ENFANTS ARMAND TROUSSEAU,UNITE HEMATOL & ONCOL PEDIAT,F-75012 PARIS,FRANCE. HOP MANS,SERV BACTERIOL,F-72037 LE MANS,FRANCE.
RP	DAMAY, M, HOP MANS,SERV PEDIAT,194 AVE RUBILLARD,F-72037 LE MANS,FRANCE.
TC	0
PD	FEB
PY	1992
VL	49
IS	2
BP	113
EP	115
UT	ISI:A1992HF54900009
ER

PT	J
AU	RAVEZ, J SIMON, A ABRAHAMS, SC MERCIER, AM DEPAPE, R
TI	FERROELECTRIC-FERROELASTIC PHASE-TRANSITION IN K3FE5F15 AND DERIVATIVES
SO	PHASE TRANSITIONS
C1	UNIV TUBINGEN,INST KRISTALLOG,W-7400 TUBINGEN 1,GERMANY. UNIV MAINE,FLUORURES LAB,F-72017 LE MANS,FRANCE.
RP	RAVEZ, J, UNIV BORDEAUX 1,CNRS,CHIM SOLIDE LAB,351 COURS LIBERAT,F-33405 TALENCE,FRANCE.
TC	0
PY	1991
VL	33
IS	1-4
PN	Part B
BP	81
EP	83
UT	ISI:A1991HC56000011
ER

PT	J
AU	PAPIN, M BULOU, A NOUET, J GANOT, F FARHI, R DUGAUTIER, C MOCH, P
TI	PHASE-TRANSITIONS IN MIXED ALKALI FLUOROALUMINATES K1-XRBXALF4 - BRILLOUIN-SCATTERING, BIREFRINGENCE MEASUREMENTS AND ULTRASONIC PROPAGATION
SO	PHASE TRANSITIONS
C1	UNIV PARIS 13,CNRS,A9001,PMTM LAB,CSP,F-93430 VILLETANEUSE,FRANCE.
RP	PAPIN, M, UNIV MAINE,CNRS,UA 807,PEC LAB,ROUTE LAVAL,F-72017 LE MANS,FRANCE.
TC	0
PY	1991
VL	33
IS	1-4
PN	Part B
BP	111
EP	114
UT	ISI:A1991HC56000016
ER

PT	J
AU	LACORRE, P FEREY, G PANNETIER, J
TI	THE MAGNETIC-STRUCTURE OF CR2F5
SO	JOURNAL OF SOLID STATE CHEMISTRY
C1	INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE.
RP	LACORRE, P, UNIV MAINE,FLUORURES LAB,CNRS,URA 449,AVE OLIVIER MESSIAEN,F-72017 LE MANS,FRANCE.
TC	0
PD	JAN
PY	1992
VL	96
IS	1
BP	227
EP	236
UT	ISI:A1992GY54300027
ER

EF