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Partager le résultat de cette recherche Interroger des sources externesDiffusion Raman anti-Stokes cohérente au voisinage des résonances électroniques et réalisation d'un montage experimental / Sylvie Annette Jeanne Druet (Née Caumartin)
Titre : Diffusion Raman anti-Stokes cohérente au voisinage des résonances électroniques et réalisation d'un montage experimental Type de document : texte imprimé Auteurs : Sylvie Annette Jeanne Druet (Née Caumartin) ; Université de Paris-sud, Editeur scientifique ; M. Taran, Directeur de thèse Année de publication : 1976 Importance : 72 p. Note générale : 01 Disponible au magazin de la B.U.C. Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : Diffusion Raman Résonance électronique Montage expérimental Index. décimale : 530 Physique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3316 Diffusion Raman anti-Stokes cohérente au voisinage des résonances électroniques et réalisation d'un montage experimental [texte imprimé] / Sylvie Annette Jeanne Druet (Née Caumartin) ; Université de Paris-sud, Editeur scientifique ; M. Taran, Directeur de thèse . - 1976 . - 72 p.
01 Disponible au magazin de la B.U.C.
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : Diffusion Raman Résonance électronique Montage expérimental Index. décimale : 530 Physique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3316 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité DRU/145 DRU/145 Thèse Bibliothèque principale Thèses Disponible
Titre : Recherches théoriques et expérimentales sur les spectres Raman induits par les impuretés dans les cristaux cubiques d'oxydes alcalino-terreux Type de document : texte imprimé Auteurs : Alain Billat ; L. Bernard, Directeur de thèse ; Université de Reims, Editeur scientifique Année de publication : 1978 Importance : 269 f. Note générale : 01 Disponible au magazin de la B.U.C. Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : Spectroscopie Oxyde Raman Index. décimale : 530 Physique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3269 Recherches théoriques et expérimentales sur les spectres Raman induits par les impuretés dans les cristaux cubiques d'oxydes alcalino-terreux [texte imprimé] / Alain Billat ; L. Bernard, Directeur de thèse ; Université de Reims, Editeur scientifique . - 1978 . - 269 f.
01 Disponible au magazin de la B.U.C.
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : Spectroscopie Oxyde Raman Index. décimale : 530 Physique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3269 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BIL/280 BIL/280 Thèse Bibliothèque principale Thèses Disponible 
Titre : Structure et spectroscopie (IR, Raman et neutron) des molécules aromatiques encagées dans des dérivés de triazines Type de document : texte imprimé Auteurs : Meriem Medjani, Auteur ; Ali Boudjada, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 196 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : diffraction des rayons X DFT spectroscopie IR Raman effet tunnel INS X-ray diffraction IR spectroscopy tunneling ?????? ?????? ??????? DFT ??? ?????? ??? ??????? ????? ????? ????? Index. décimale : 530 Physique Résumé : Our thesis was dedicated to systematically extend recent observations indicating that the molecular conformation and certain modes of vibration of the 4,6-dichloro-5-methylpyrimidine (4,6dC5MP), 3,5-dibromo-4- methylpyridine (3,5dB4MPn) and 2,4,6-Collidine encaged in the BrPOT from X-ray diffraction at ambient temperature.
Hirschfield’s surface analysis is generated through the Crystal Explorer program, providing information on the existing interactions in the structure of both products and helping to view and understand its crystalline stack.
In parallel to the experimental study, we made theoretical calculations of the conformation of the single molecule using the methods of the DFT (Density Functional Theory) well known for their precision and normal modes of vibration.
The results of calculation of quantum mechanics made by (DFT) with the functional MPW1PW91 and Lanl2DZ base led to similar results in the angles and bond lengths in relation to the experiment.
The theoretical calculations of spectroscopy allowed the identification of the different modes of vibration of the molecule.
The inelastic neutron scattering (INS) technique was used to study the tunneling effect of the methyl group of collidine encaged, and tunnel burstings were measured. These values correspond to the generator potential.
Diplôme : Doctorat En ligne : ../theses/physique/MED7301.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10916 Structure et spectroscopie (IR, Raman et neutron) des molécules aromatiques encagées dans des dérivés de triazines [texte imprimé] / Meriem Medjani, Auteur ; Ali Boudjada, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2018 . - 196 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : diffraction des rayons X DFT spectroscopie IR Raman effet tunnel INS X-ray diffraction IR spectroscopy tunneling ?????? ?????? ??????? DFT ??? ?????? ??? ??????? ????? ????? ????? Index. décimale : 530 Physique Résumé : Our thesis was dedicated to systematically extend recent observations indicating that the molecular conformation and certain modes of vibration of the 4,6-dichloro-5-methylpyrimidine (4,6dC5MP), 3,5-dibromo-4- methylpyridine (3,5dB4MPn) and 2,4,6-Collidine encaged in the BrPOT from X-ray diffraction at ambient temperature.
Hirschfield’s surface analysis is generated through the Crystal Explorer program, providing information on the existing interactions in the structure of both products and helping to view and understand its crystalline stack.
In parallel to the experimental study, we made theoretical calculations of the conformation of the single molecule using the methods of the DFT (Density Functional Theory) well known for their precision and normal modes of vibration.
The results of calculation of quantum mechanics made by (DFT) with the functional MPW1PW91 and Lanl2DZ base led to similar results in the angles and bond lengths in relation to the experiment.
The theoretical calculations of spectroscopy allowed the identification of the different modes of vibration of the molecule.
The inelastic neutron scattering (INS) technique was used to study the tunneling effect of the methyl group of collidine encaged, and tunnel burstings were measured. These values correspond to the generator potential.
Diplôme : Doctorat En ligne : ../theses/physique/MED7301.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10916 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MED/7301 MED/7301 Thèse Bibliothèque principale Thèses Disponible
Titre : Elaboration et caractérisation de nanocomposites hybrides : Oxydes métalliques/polymères Type de document : texte imprimé Auteurs : Bariza Troudi, Auteur ; Ouahiba Halimi, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 121 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : Synthèse hydrothermale Nanocomposites Films minces CuO/PS CuO/PVC PbO/PS PbO/PVC DRX FT-IR Raman AFM Absorption UV-Visible photoluminescence Hydrothermal synthesis thin films UV-Visible Absorption ?????? ?????? ????? ????? ???????? ??? ????????- ???? ???????? ?????? Index. décimale : 530 Physique Résumé : Thin films of metal oxides/polymers nanocomposites were deposited on glass substrates by Spin-Coating and Dip-Coating techniques. The nanocomposites were elaborated by inserting, in the matrices of polystyrene (PS) and polyvinyl chloride (PVC) polymers, of nanoparticles of metal oxides such as copper oxide (CuO) and lead oxide (PbO). The nanoparticles of semiconductor CuO and PbO were synthesized beforehand by the hydrothermal method. The xray diffraction characterization of the obtained powders have revealed a monoclinic phase for CuO crystallites and an orthorhombic phase for PbO. The size of the crystallites of the two semiconductors is of a nanometic order. Calcul the of gap energy indicate a shift towards high energies compared to massive crystals. This shift is due to the effect of the quantum confinement induced by the nanometric size of the crystallites of the semiconductors. These nanocrystals are used for the preparation of the nanocomposites of CuO/PS, CuO/PVC, PbO/PS and PbO/PVC by
simple insertion of CuO and PbO nanoparticles in the PS and PVC polymers. The analysis of the elaborated nanocomposites by X-ray diffraction has allowed to notice the incorporation of the CuO and PbO crystallites into the PS and PVC polymers matrixes and analysis by Raman and infrared spectroscopies has confirmed the presence of CuO and PbO crystallites in the PS and PVC matrixes by revealing specific vibration modes to the Cu-O and Pb-O bonds. The surface morphology and topography of thin films of nanocomposites were highlighted with the help of atomic force microscopy (AFM) and have shown homogeneous dispersion of CuO and PbO crystallites and a low surface roughness. the characterization by measurement of the optical absorption in the UV-Visible domain allows to observe the increase in optical absorption which is attributed to CuO and PbO nanocrystallites because PS and PVC are optically transparent in the UV-Visible domain. A shift of the gap energy of the nanocomposites compared with the gap energy of the pure polymers and the massive crystallites of CuO and PbO was observed. This variation in gap energy is the result of the new optical behavior of the prepared nanocomposites.
The optical characterization by the measure of the photoluminescence has shown that the elaborated samples present intense luminescence bands in the visible range, hence the possibility of consider these matrices as optically active media and can be used for the making devices of specific optics properties.
Diplôme : Doctorat en sciences En ligne : ../theses/physique/TRO7142.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10460 Elaboration et caractérisation de nanocomposites hybrides : Oxydes métalliques/polymères [texte imprimé] / Bariza Troudi, Auteur ; Ouahiba Halimi, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 121 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : Synthèse hydrothermale Nanocomposites Films minces CuO/PS CuO/PVC PbO/PS PbO/PVC DRX FT-IR Raman AFM Absorption UV-Visible photoluminescence Hydrothermal synthesis thin films UV-Visible Absorption ?????? ?????? ????? ????? ???????? ??? ????????- ???? ???????? ?????? Index. décimale : 530 Physique Résumé : Thin films of metal oxides/polymers nanocomposites were deposited on glass substrates by Spin-Coating and Dip-Coating techniques. The nanocomposites were elaborated by inserting, in the matrices of polystyrene (PS) and polyvinyl chloride (PVC) polymers, of nanoparticles of metal oxides such as copper oxide (CuO) and lead oxide (PbO). The nanoparticles of semiconductor CuO and PbO were synthesized beforehand by the hydrothermal method. The xray diffraction characterization of the obtained powders have revealed a monoclinic phase for CuO crystallites and an orthorhombic phase for PbO. The size of the crystallites of the two semiconductors is of a nanometic order. Calcul the of gap energy indicate a shift towards high energies compared to massive crystals. This shift is due to the effect of the quantum confinement induced by the nanometric size of the crystallites of the semiconductors. These nanocrystals are used for the preparation of the nanocomposites of CuO/PS, CuO/PVC, PbO/PS and PbO/PVC by
simple insertion of CuO and PbO nanoparticles in the PS and PVC polymers. The analysis of the elaborated nanocomposites by X-ray diffraction has allowed to notice the incorporation of the CuO and PbO crystallites into the PS and PVC polymers matrixes and analysis by Raman and infrared spectroscopies has confirmed the presence of CuO and PbO crystallites in the PS and PVC matrixes by revealing specific vibration modes to the Cu-O and Pb-O bonds. The surface morphology and topography of thin films of nanocomposites were highlighted with the help of atomic force microscopy (AFM) and have shown homogeneous dispersion of CuO and PbO crystallites and a low surface roughness. the characterization by measurement of the optical absorption in the UV-Visible domain allows to observe the increase in optical absorption which is attributed to CuO and PbO nanocrystallites because PS and PVC are optically transparent in the UV-Visible domain. A shift of the gap energy of the nanocomposites compared with the gap energy of the pure polymers and the massive crystallites of CuO and PbO was observed. This variation in gap energy is the result of the new optical behavior of the prepared nanocomposites.
The optical characterization by the measure of the photoluminescence has shown that the elaborated samples present intense luminescence bands in the visible range, hence the possibility of consider these matrices as optically active media and can be used for the making devices of specific optics properties.
Diplôme : Doctorat en sciences En ligne : ../theses/physique/TRO7142.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10460 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité TRO/7142 TRO/7142 Thèse Bibliothèque principale Thèses Disponible
Titre : Elaboration des Couches minces du Semiconducteur ZnO dopées au Cobalt et étude de leurs propriétés structurales, optiques et électriques. Type de document : texte imprimé Auteurs : Ahmed Reda Khantoul, Auteur ; Miloud Seffari, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 108 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : Oxyde de zinc Cobalt Couches minces Dip-Coating Sol-Gel DRX MEB AFM Raman UV-Visible photoluminescence Zinc oxide cobalt thin films SEM ????? ????? ?????? ???? ???????? ???????-??????? ????? ???? ?????? ??????? ?????? ?????????? ?????? ???? ????? ?????? ?????? ????? ?????? ??????? ?????? ?????? ??? ?????????-??????? ????? ?????? ?????? Index. décimale : 530 Physique Résumé : The present work consists in the elaboration and characterization of the undoped and cobalt-doped ZnO with different concentrations of cobalt (Co) (0.5, 1, 5 and 10% in weight) thin films in order to improve the structural, morphological, optical and electrical properties of ZnO. The samples were prepared using the Sol-Gel method and deposited on glass substrates by the Dip-coating ""Dipping-Drawing"" technique. Structural haracterization showed the formation of ZnO of hexagonal structure (wurtzite) with a preferential orientation according to plane (002) and made it possible to determine the nanometric size of the crystallites. The SEM and AFM images revealed the nanometric character of our layers. Raman scattering confirmed the results of the XRD, namely the formation of ZnO with an hexagonal structure (wurtzite). UV-visible spectroscopy has shown that our layers have a transparency, in the visible, which varies between 80 and 98%. It has shown also that the gap decreases with the increase in doping. The hotoluminescence of the films showed ultraviolet (UV) and visible emissions related to defects. The codoping of aluminum to cobalt allowed us also to improve the structural and optical properties.
Diplôme : Doctorat en sciences En ligne : ../theses/physique/KHA7383.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11033 Elaboration des Couches minces du Semiconducteur ZnO dopées au Cobalt et étude de leurs propriétés structurales, optiques et électriques. [texte imprimé] / Ahmed Reda Khantoul, Auteur ; Miloud Seffari, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2018 . - 108 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : Oxyde de zinc Cobalt Couches minces Dip-Coating Sol-Gel DRX MEB AFM Raman UV-Visible photoluminescence Zinc oxide cobalt thin films SEM ????? ????? ?????? ???? ???????? ???????-??????? ????? ???? ?????? ??????? ?????? ?????????? ?????? ???? ????? ?????? ?????? ????? ?????? ??????? ?????? ?????? ??? ?????????-??????? ????? ?????? ?????? Index. décimale : 530 Physique Résumé : The present work consists in the elaboration and characterization of the undoped and cobalt-doped ZnO with different concentrations of cobalt (Co) (0.5, 1, 5 and 10% in weight) thin films in order to improve the structural, morphological, optical and electrical properties of ZnO. The samples were prepared using the Sol-Gel method and deposited on glass substrates by the Dip-coating ""Dipping-Drawing"" technique. Structural haracterization showed the formation of ZnO of hexagonal structure (wurtzite) with a preferential orientation according to plane (002) and made it possible to determine the nanometric size of the crystallites. The SEM and AFM images revealed the nanometric character of our layers. Raman scattering confirmed the results of the XRD, namely the formation of ZnO with an hexagonal structure (wurtzite). UV-visible spectroscopy has shown that our layers have a transparency, in the visible, which varies between 80 and 98%. It has shown also that the gap decreases with the increase in doping. The hotoluminescence of the films showed ultraviolet (UV) and visible emissions related to defects. The codoping of aluminum to cobalt allowed us also to improve the structural and optical properties.
Diplôme : Doctorat en sciences En ligne : ../theses/physique/KHA7383.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11033 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité KHA/7383 KHA/7383 Thèse Bibliothèque principale Thèses Disponible
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