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Artykuły w czasopismach na temat "Propriétés catalytiques et optiques"
Genet, Cyriaque. "Chiralité et optique plasmonique". Reflets de la physique, nr 76 (wrzesień 2023): 4–10. http://dx.doi.org/10.1051/refdp/202376004.
Pełny tekst źródłaLefrant, S., C. Godon, T. Verdon, E. Mulazzi i G. Leising. "Propriétés optiques de polymères et de copolymères orientés". Journal de Chimie Physique 89 (1992): 947–56. http://dx.doi.org/10.1051/jcp/1992890947.
Pełny tekst źródłaCardinal, Thierry, Matthieu Lancry, Lionel Canioni, Bertrand Poumellec i Wilfried Blanc. "Fonctionnaliser le verre pour de nouvelles propriétés optiques". Reflets de la physique, nr 74 (grudzień 2022): 70–75. http://dx.doi.org/10.1051/refdp/202274070.
Pełny tekst źródłaFortin, ER, i AP Roth. "Quelques propriétés optiques et électro-optiques des super-réseaux et puits quantiques semiconducteurs InGaAs/GaAs". Journal de Chimie Physique 88 (1991): 2197–209. http://dx.doi.org/10.1051/jcp/1991882197.
Pełny tekst źródłaBesbes, Mondher, Jean-Paul Hugonin i Christophe Sauvan. "Calcul électromagnétique de micro et nanostructures photoniques périodiques". Photoniques, nr 100 (styczeń 2020): 34–39. http://dx.doi.org/10.1051/photon/202010034.
Pełny tekst źródłaLévy-Clément, C., i S. Bastide. "Propriétés optiques du silicium mésoporeux et ses applications potentielles". Journal de Physique IV (Proceedings) 12, nr 2 (kwiecień 2002): 165–74. http://dx.doi.org/10.1051/jp420020023.
Pełny tekst źródłaCourjal, Nadège, Florent Behague, Vincent Pêcheur, Mathieu Chauvet, Maria-Pilar Bernal i Jérôme Hauden. "Microsystèmes intégrés en niobate de lithium". Photoniques, nr 98 (wrzesień 2019): 34–38. http://dx.doi.org/10.1051/photon/20199834.
Pełny tekst źródłaRoussel, Frédérick, Ulrich Maschke, Xavier Coqueret i Jean-Marc Buisine. "Propriétés optiques et thermophysiques de composites polyméres-cristaux liquides (PDLC)". Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics-Physics-Astronomy 326, nr 7 (lipiec 1998): 449–55. http://dx.doi.org/10.1016/s1287-4620(98)80015-x.
Pełny tekst źródłaPruvost, Laurence, i Thierry Ruchon. "Vortex optiques en interaction avec des atomes". Reflets de la physique, nr 75 (kwiecień 2023): 10–16. http://dx.doi.org/10.1051/refdp/202375010.
Pełny tekst źródłaMousseau, Fanny, Chao Yu, Antigoni Alexandrou i Cédric Bouzigues. "L’imagerie optique de nanoparticules luminescentes : de la détection de biomolécules au diagnostic in vitro". Photoniques, nr 106 (styczeń 2021): 30–33. http://dx.doi.org/10.1051/photon/202110630.
Pełny tekst źródłaRozprawy doktorskie na temat "Propriétés catalytiques et optiques"
Komla, Adéchion. "Etude de la texture de couches à propriétés optiques et catalytiques spécifiques obtenues à partir d'aciers inoxydables". Toulouse 3, 1991. http://www.theses.fr/1991TOU30277.
Pełny tekst źródłaWakim, Salem. "Elaboration de structures conjuguées chirales à partir de dérivés du trans (1R, 2R)-1,2-diaminocyclohexane. Evaluation des propriétés catalytiques et optiques". Montpellier 2, 2002. http://www.theses.fr/2002MON20018.
Pełny tekst źródłaSaitzek, Sébastien. "Systèmes multifonctionnels à base de dioxydes de cérium nanostructurés. Nanocomposites catalytiques CeO2-CuOx et bicouches CeO2-VO2 pour commutation en optoélectronique IR". Toulon, 2005. http://www.theses.fr/2005TOUL0014.
Pełny tekst źródłaCerium dioxide is known as presenting a large variety of physico-chemical properties: it can be considered as a multifunctional compound. We present two studies linked to two types of applications in which cerium dioxide is involved as a multifunctional phase: catalytic behaviours of nanocomposite systems CeO2- CuOx for gas sensor applications, optical responses and chemical stability of CeO2-VO2 bilayers for infrared applications. This last study is connected with new technologies like bolometric applications (IR camera). The first study consisted in preparing nanostructured systems CeO2-CuOx from low temperature routes (soft chemistry including sol-gel, low temperature processes). This nanocomposites were characterized from X-ray diffraction, electron microscopy techniques, BET analyses. Infrared spectroscopy associated with homemade equipment was then used to follow catalytic reactions in presence of gas mixtures (air-CH4 or air-CO). A modelling approach is presented to interpret the IR analyses and the catalytic site saturation, observed in the case of ceria based systems. The CuOx –ceria samples were then compacted and inserted in a homemade electronic system to analyse the influence of CO or CH4 reducing gases, on surface conduction of CuOx-CeO2 pellets. The results obtained from FTIR analyses and electronic measurements are found to be coherent: the copper additions decrease the durability of catalytic responses of these nanocomposite systems, however they increase the sensibility in the case of low Cu additions. This might be interesting for gas sensor applications. The second study deals with CeO2-VO2 bilayers obtained from sputtering techniques and deposited in Si and SiO2 substrates. RF sputtering parameters were optimised to deposit first VO2 then CeO2 thin layers. The role of CeO2 was to insure a protection of the VO2 layer from aggressive environments, without degrading optical responses. Starting from a low cost target of V2O5 , layers of VO2 were obtained. We show that these bilayers present a good thermochromic optical contrast (insulating-metal transition at 68°C). Ceria is known as being transparent for IR wavelengths and opaque for UV radiation. However, the emissivity depends on ceria layer thickness. These new bilayers present a double interest: they can present increased chemical stability (improvement of lifetimes), and they can be used to modulate infrared emissivity responses in the case of IR detection
Diaw, Abdou Karim Diagne. "Electrosynthèse, caractérisation et propriétés optique du Poly-N-phénylpyrrole dans divers milieux et sur divers substrats : étude de l'effet catalytique du pyrrole et de l'effet d'inhibition de corrosion : synthèse organique, électropolymérisation en milieu organique, caractérisation et propriétés optiques des dérivés p-substitués du poly(N-PhPy)". Paris 7, 2010. http://www.theses.fr/2010PA077014.
Pełny tekst źródłaTwo strategies are proposed to improve the organic polymer solubility for their use as active components in electronic devices: in the first one N-phenylpyrrole (N-PhPy) is electropolymerized in micellar solution, which increases solubility of resulting polymers; in the second one an electron-donating substituent is grafted in the para position of phenyl in N-PhPy moiety by chemical synthesis, followed by an electropolymerization process. A direct micellar medium (SDS + water + perchloric acid) and an inverse micellar medium (AOT + alcane (octane) + perchloric acid) are used to electrosynthesize poly(N-PhPy) films on Pt. These films present a good solubility, which also allowed us to characterize their structure by MALDI-TOF mass spectrometry, and to study their optic properties in organic solution. We were able to synthetize with satisfactory yields (36-81 %), by the Clauson-Kaas modified method and the Still method and to characterize a new series of N-PhPy para-substituted derivatives and new symmetrical and asymmetrical mono and oligophenylenethiophene compounds with one (or 2) pyrrole(s) at the chain end (ThPhPy and PyPhThThPhPy). We electrosynthesized in organic medium, very electroactive and adherent poly(MPhPy), poly(HPhPy), poly(ThPhPy), poly(PhDPy) and poly (DPhDPy) films on Pt. FT-IR spectroscopy showed the existence of a coupling in the a - a' positions of pyrrolic rings, having pendant phenyl groups with an electron-donating substituent in para. We compared the optic properties of these N-PhPy derivatives and of corresponding soluble polymers [poly(MPhPy), poly(HPhPy), poly(ThPhPy)] in organic solution and measured the fluorescence quantum yields and decays
Lee, Suyeon. "Synthesis and properties of mono and bi- metallic nanoparticles of noble metals; towards fabrication of novel functional nanoparticles assemblies". Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS580.
Pełny tekst źródłaNoble metal nanoparticles (NPs) have attracted a great interest last years in various domains due to their distinct physical and chemical properties such as optical, catalytic or magnetic properties. In this thesis, we investigated the various approaches to integrate two metals in the same system, such as bimetallic nanoparticles, or binary superlattices to obtain new properties. We have developed seed-mediated growth method to rationally synthesis core-shell NPs Au(or Ag)@M (M=Ag, Pd, Pt). The impact of synthesis parameters such as concentration of metallic precursors, nature of ligands or temperature on key NPs parameters (core size, shell thickness, dispersity) was studied. The optical, vibrational and catalytic properties of different bimetallic NPs were characterized according to their structure, chemical composition, number of shell atomic layer and core crystallinities. In addition, binary NP superlattices, which are co-assembled from of two different complementary components were also reported. Several assembly conditions (effective size ratio, concentration ratio, deposition temperature, deposition method) were explored. The physical mechanism responsible for the observed structural variation was thus identified. A variety of crystalline structures for the binary superlattices such as AlB2, NaZn13, NaCl were produced. Finally, the magnetic properties of Fe2O3/Au NP binary superlattices were studied. They are determined by the interparticle distance of Fe2O3 NPs modulated by the insertion of Au NPs
El, Moll Hani. "Synthèses et propriétés catalytiques de cavitands résorcinaréniques". Strasbourg, 2009. http://www.theses.fr/2009STRA6118.
Pełny tekst źródłaPoriel, Cyril. "Les spirobifluorènylprophyrines : synthèse, électropolymérisation et propriétés catalytiques". Rennes 1, 2003. http://www.theses.fr/2003REN10102.
Pełny tekst źródłaAbu, Bakar Noor Hana Hanif. "Particules bimétalliques. Synthèse, caractérisation et propriétés catalytiques". Thesis, Nancy 1, 2010. http://www.theses.fr/2010NAN10013/document.
Pełny tekst źródłaThe synthesis of PtNi bimetallic particles supported silica catalysts, prepared via non-classical methods using sodium borohydride (NaBH4) as a reducing agent, was studied in detail. The silica supports employed in this work is limited to crystalline silica and mesoporous aluminosilicate (MCM-41). Various preparation techniques as well as reduction parameters were investigated to gain an insight on how these factors influenced the final structure of the PtNi particles on the silica support and their catalytic reactivity towards the hydrogenation of benzene to cyclohexane. It was found that this reduction method enabled total reduction of the metal salts during the preparation stage of the catalysts. Hydrogen consumptions which were detected using H2-TPR analysis were mainly attributed to surface oxidation of the metal phase during storage. Studies on the effect of preparation techniques showed that the surface and catalytic properties of the catalysts are largely affected by the PtNi ratio as well as the method in which the metal salts are introduced onto the support. Catalysts prepared via co-impregnation technique generally exhibited better catalytic reactivity when compared to those prepared via co-precipitation and step-impregnation techniques. Further, catalysts with higher Ni content showed a tendency towards lower reactivity in contrast to those with high Pt content. Several catalysts demonstrated enhanced reactivity when compared to the monometallic Pt catalysts. Investigations showed that the improved reactivity can be attributed to alloying of the Pt and Ni accompanied by surface segregation of Pt. As a means to improve catalytic reactivity, PtNi stabilized oleic acid particles were synthesized prior to incorporation onto a silica support. The intention of this study is to allow better control of the dispersion and alloying between the PtNi particles. Results show that though better dispersed alloys were obtained, very low activity was observed. Nickel surface segregation is likely to be the cause of this due to the presence of oxygen from oleic acid. The effect of several reduction parameters was also investigated to enhance catalytic reactivity. The reduction temperature, NaBH4 concentration and medium in which reduction was carried out were varied. Variations in these parameters affected the particle morphology and dispersion of the PtNi particles. Optimum catalytic reactivity was obtained when small dispersed PtNi particles were formed at 273 K using 0.3 M NaBH4 in a medium of ethanol. Classical methods were also used for the synthesis of PtNi supported catalysts. In this study the PtNi particles were formed using H2 gas as the reducing agent. Several catalysts showed improved reactivity. Investigations show that this is attributed to the anchoring effect of Ni2+ ions which anchors Pt to the support, forming fine dispersed Pt particles available for catalytic reaction. In general, it is obvious that alloyed and non – alloyed bimetallic particles supported on silica can lead to the enhancement of hydrogenation reactions when compared to the respective monometallic catalysts. However, the PtNi ratios, preparation techniques, environment in which the particles are reduced and support influences the structure of the metallic phase of these catalysts. Therefore it is imperative to gain a thorough understanding on these parameters, in order to synthesize catalysts with desired properties
Ramos, Paul. "La lipase pancréatique humaine : Purification, propriétés catalytiques et propriétés de fluorescence". Université Louis Pasteur (Strasbourg) (1971-2008), 2002. http://www.theses.fr/2002STR13207.
Pełny tekst źródłaThis work of thesis is articulated around two parts. The first part describes the purification of human pancreatic lipase and the study of its catalytic properties. In a second part, more fundamental, the properties of fluorescence of human pancreatic lipase were studied. Lipase was purified starting from two origins: human pancreatic juice and recombinant human pancreatic lipase. The catalytic properties of the two purified enzymes were studied in titrimetry at constant pH. They were found identical to those of the enzyme present in the plasma of patients suffering from acute pancreatitis. Moreover, the stability of the two preparations of purified enzyme proved to be excellent. In addition, the two preparations are commutable with the specimens coming from patients. They were certified by five laboratories (ours having coordinated the study) from four different countries. These results and the batches of these two materials were transmitted to the Bureau Communautaire de Référence (Brussels) for recording. These two materials will improve the comparability of results of measurements of the enzymatic activity of lipase in fundamental and clinical enzymology studies. In the second part we carried out the studies in fluorescence of wild pancreatic lipase and various mutants where a tryptophan was replaced by a phenylalanine. Wild pancreatic lipase has three distinct lifetimes. Only the change of tryptophan 30 involved the disappearance of the longest lifetime thus characterizing the contribution of this tryptophan in the total fluorescence of protein. Tryptophan 30 is very close to the lid covering the catalytic site with lipase in closed conformation (non active). We can attribute the long lifetime to tryptophan 30, which gives a convenient tool to follow with fluorescence the structural and likely functional variations of this important part of the protein during its activation by biliary salts and colipase. The study of the fluorescence of lipase in the presence of colipase and/or biliary salts by following the long lifetime of protein showed significant differences compared to the characteristics of fluorescence of F30 lipase without any effector (closed conformation). This tool should allow to easily identify inactive and active conformation thanks to measurement of the long lifetime of human pancreatic lipase
Pinna, Nicola. "Nanomatériaux : étude structurale et propriétés optiques". Paris 6, 2001. http://www.theses.fr/2001PA066357.
Pełny tekst źródłaKsiążki na temat "Propriétés catalytiques et optiques"
Collet, André. Molécules chirales: Stéréochimie et propriétés. Les Ulis: EDP Sciences, 2006.
Znajdź pełny tekst źródłaCollet, André. Molécules chirales: Stéréochimie et propriétés. Les Ulis: EDP Science, 2006.
Znajdź pełny tekst źródła1945-, Grubb David T., red. Polymer microscopy. Wyd. 2. London: Chapman and Hall, 1996.
Znajdź pełny tekst źródłaSawyer, Linda C. Polymer microscopy. London: Chapman and Hall, 1987.
Znajdź pełny tekst źródłaSawyer, Linda C. Polymer microscopy. Wyd. 3. New York: Springer, 2008.
Znajdź pełny tekst źródłaKokuritsu Bunkazai Kikō (Japan). Tōkyō Bunkazai Kenkyūjo. Kokuhō jitsugetsu shiki sansuizu kōgaku chōsa hōkokusho: Shingonshū Omuro-ha Daihonzan Amanosan Kongōji shozō. Tōkyō-to Taitō-ku: Kokuritsu Bunkazai Kikō Tōkyō Bunkazai Kenkyūjo, 2019.
Znajdź pełny tekst źródłaDutasta, Jean-Pierre, Laure Guy, André Collet i Jeanne Crassous. Molécules Chirales: Stéréochimie et Propriétés. EDP Sciences, 2021.
Znajdź pełny tekst źródłaLévy, A. Michel. Tableaux des Minéraux des Roches: Résumé de Leurs Propriétés Optiques, Cristallographiques Et Chimiques (Classic Reprint) (French Edition). Forgotten Books, 2018.
Znajdź pełny tekst źródłaCloizeaux, Alfred Des. Nouvelles Recherches Sur les Propriétés Optiques des Cristaux Naturels Ou Artificiels, et Sur les Variations Que Ces Propriétés Éprouvent Sous l'influence de la Chaleur. Creative Media Partners, LLC, 2018.
Znajdź pełny tekst źródłaCloizeaux, Alfred Des. Nouvelles Recherches Sur les Propriétés Optiques des Cristaux Naturels Ou Artificiels, et Sur les Variations Que Ces Propriétés Éprouvent Sous l'influence de la Chaleur. Creative Media Partners, LLC, 2018.
Znajdź pełny tekst źródłaCzęści książek na temat "Propriétés catalytiques et optiques"
Boucher, Olivier. "Propriétés physiques, chimiques et optiques des aérosols". W Ingénierie et développement durable, 17–35. Paris: Springer Paris, 2012. http://dx.doi.org/10.1007/978-2-8178-0055-4_3.
Pełny tekst źródła"3 Propriétés optiques". W Les surfaces solides : concepts et méthodes, 131–48. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0293-7-009.
Pełny tekst źródła"3 Propriétés optiques". W Les surfaces solides : concepts et méthodes, 131–48. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0293-7.c009.
Pełny tekst źródła"Chapitre 19 Effets électro-optiques et élasto-optiques". W Symétrie et propriétés physiques des cristaux, 385–412. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0927-1-027.
Pełny tekst źródła"Chapitre 19 Effets électro-optiques et élasto-optiques". W Symétrie et propriétés physiques des cristaux, 385–412. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0927-1.c027.
Pełny tekst źródłaEtienne, Serge, i Laurent David. "Chapitre 7. Propriétés électriques et optiques". W Introduction à la physique des polymères, 221–62. Dunod, 2012. http://dx.doi.org/10.3917/dunod.etien.2012.01.0221.
Pełny tekst źródła"6 Étude expérimentale des propriétés optiques de surface". W Les surfaces solides : concepts et méthodes, 239–48. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0293-7-017.
Pełny tekst źródła"6 Étude expérimentale des propriétés optiques de surface". W Les surfaces solides : concepts et méthodes, 239–48. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0293-7.c017.
Pełny tekst źródła"Propriétés des résonateurs optiques et des faisceaux gaussiens". W Optique de Fourier, 409–20. Paris: Springer Paris, 2009. http://dx.doi.org/10.1007/978-2-287-99168-4_15.
Pełny tekst źródłaPlanel, R. "Propriétés optiques des semi-conducteurs et de leurs hétérostructures". W L'optique non linéaire et ses matériaux, 1–72. EDP Sciences, 2001. http://dx.doi.org/10.1051/978-2-7598-0194-7.c002.
Pełny tekst źródłaStreszczenia konferencji na temat "Propriétés catalytiques et optiques"
Mangin, Jacques. "Métrologie des propriétés optiques de matériaux massifs : absorption résiduelle, coefficients thermo-optiques, piézo-électriques et électro-optiques". W Élaboration et caractérisation des cristaux massifs et en couches minces pour l'optique. Les Ulis, France: EDP Sciences, 2003. http://dx.doi.org/10.1051/bib-sfo:2002811.
Pełny tekst źródłaPlanel, R. "Propriétés optiques des semi-conducteurs et de leurs hétérostructures". W L'optique non linéaire et ses matériaux. Les Ulis, France: EDP Sciences, 1998. http://dx.doi.org/10.1051/sfo/1998009.
Pełny tekst źródłaBoulanger, Benoît, i Jean-Philippe Fève. "Méthodes de caractérisation des propriétés optiques non linéaires de conversion de fréquence des cristaux". W Élaboration et caractérisation des cristaux massifs et en couches minces pour l'optique. Les Ulis, France: EDP Sciences, 2003. http://dx.doi.org/10.1051/bib-sfo:2002816.
Pełny tekst źródłaPocholle, J. P. "Propriétés optiques des matériaux semiconducteurs à puits quantiques et applications dans le domaine du traitement du signal". W Optoélectronique (Volume 1). Les Ulis, France: EDP Sciences, 1990. http://dx.doi.org/10.1051/sfo/1990006.
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