Etude de la fragmentation de derives de L'uracile et de la thymine par Spectrometrie de masse
in: Biological Mass Spectrometry, in: Biological Mass Spectrometry . - Chichester : Wiley Subscription Services, Inc., A Wiley Company, ISSN 0306-042X, ZDB-ID 2197367-2 Vol. 2 (12. 1969), p. 1183-1199
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1969
Nous présentons und série de spectres de masse originaux, de dérivés de l'uracile et de la thymine, ainsi que les schémas de fragmentation correspondants.L'étude d'une première série de molécules, à caractère aromatique, dont une marquée au 14C, a permis de confirmeer le mécanisme de... mehr Original mass spectra of uracil and thymine derivatives are presented with the corresponding fragmentation schemes.In the first series of spectra, the fragmentations of thymine derivatives, including 14C-2-thymine, dimers, and bromo thymines, confirm the basic retro Diels-Alder mechanism.The... mehr
Light scattering study of the liquid–glass transition of meta-toluidine
In: The Journal of Chemical Physics. - College Park, Md. : Inst., ISSN 1089-7690, Vol. 112, No. 22 (2000), p. 9860-9873 Zugang:
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2000
An experimental study of the glass transition of meta-toluidine combining several light scattering techniques was performed. The structural relaxation time is measured in depolarized geometry from the glass transition temperature up to well above the melting point and found to vary over 13 time... mehr
Etude de l'influence de l'ouverture d'un compteur pour la mesure des sections efficaces differentielles
in: Nuclear Instruments and Methods, in: Nuclear Instruments and Methods . - Amsterdam : Elsevier, ISSN 0029-554X, ZDB-ID 2205646-4 Vol. 64, No. 1 (1968), p. 1-6
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1968
Copyright: Copyright (c) 2002 Elsevier Science B.V. mehr
Mesure en temps réel des variations du temps de transit dans un câble optique multifibre
in: Optical and quantum electronics , ISSN 1572-817X, Vol. 17 (5. 1985), p. 329-336 Zugang:
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1985
Abstract Measurements in real time of the delay time of the signal in optical fibres in a cable have been performed both by the pulse method and a phase method. The experimental arrangement and principle of the methods are presented. The evolution of the results against temperature is discussed. mehr
Copyright: Copyright 1985 Chapman and Hall Ltd. mehr
Spectroscopic characterization of lithium doped borate glasses
in: Journal of sol gel science and technology , ISSN 1573-4846, Vol. 2 (1/3. 1994), p. 891-894 Zugang:
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1994
Abstract B2O3-xLi2O3 (x=0, 0.1, 0.5) glasses have been prepared by the Sol-Gel method. The evolution of the composition and the structure of the materials upon thermal treatments are analyzed. Raman spectroscopy measurements reveal that the structure transforms from crystalline to amorphous.... mehr
Copyright: Copyright 1994 Kluwer Academic Publishers mehr
Physical properties of LiMn2O4 spinel prepared at moderate temperature
in: Ionics , ISSN 1862-0760, Vol. 4 (1/2. 1998), p. 8-15 Zugang:
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1998
Abstract A moderate-temperature method of preparation of the spinel LiMn2O4 was developed around 500 °C. Physical features of the products were identified by X-ray photoelectron spectroscopy, X-ray diffractometry, Raman scattering and FTIR spectroscopy. The electronic conductivity of LiMn2O4 has... mehr
Copyright: Copyright 1998 IfI - Institute for Ionics mehr
Thrombosis of the posterior cerebral artery
in: Neuroradiology , ISSN 1432-1920, Vol. 1 (2. 1970), p. 99-100 Zugang:
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1970
Summary The authors report a case of thrombosis of the posterior cerebral artery. mehr Résumé Les auteurs rapportent un cas d'occlusion complète du segment latéro-pédonculaire de l'artère cérébrale postérieure gauche. mehr Zusammenfassung Die Verfasser berichten über einen Kranken mit einem arteriographisch nachgewiesenem Verschluß der A. cerebri posterior li. mehr
Characterization and Electrochemical Studies of LiMn2O4 Cathode Materials Prepared by Combustion Method
in: Journal of electroceramics , ISSN 1573-8663, Vol. 3 (4. 1999), p. 433-441 Zugang:
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1999
Abstract A combustion method using urea as a fuel has been developed for the synthesis of the spinel LiMn2O4 around 500°C. Physical features of the products were identified by X-ray photoelectron spectroscopy, X-ray diffractometry, Raman scattering and FTIR spectroscopy. Cells were fabricated... mehr
Copyright: Copyright 1999 Kluwer Academic Publishers mehr
Physical Properties and Electrochemical Features of Lithium Nickel-Cobalt Oxide Cathode Materials Prepared at Moderate Temperature
in: Journal of electroceramics , ISSN 1573-8663, Vol. 3 (4. 1999), p. 425-432 Zugang:
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1999
Abstract In this paper, we report the synthesis, the physical properties and the electrochemical features of the lithium nickel-cobalt oxide cathode materials prepared by a combustion method at moderate temperature. Structural properties were investigated by X-ray diffraction, Raman scattering... mehr
Copyright: Copyright 1999 Kluwer Academic Publishers mehr
Untersuchung von Milch und Rahm
in: Fresenius' Zeitschrift für analytische Chemie , ISSN 1618-2650, Vol. 108 (1/2. 1937), p. 52-62 Zugang:
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1937
Copyright: Copyright 1937 Verlag von J. F. Bergmann mehr
Fourth metting of the European Neurological Society 25–29 June 1994 Barcelona, Spain
in: Journal of neurology , ISSN 1432-1459, Vol. 241 (1. 1994), p. 1-164 Zugang:
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