Dissertations / Theses on the topic 'Et II'
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Bouazza, Safa. "Etude de la structure hyperfine de As II, Pt II, Au II, Pb II et Bi II et du déplacement isotopique de Pt II et Pb II par interférométrie Fabry-Pérot dans l'ultraviolet lointain." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37603245m.
Full textLaurencin, Danielle. "Dérivés polyoxométalliques de Ru(II) et d'Os(II) : synthèse, modélisation, et catalyse." Paris 6, 2006. http://www.theses.fr/2006PA066192.
Full textBouazza, Safa. "Étude de la structure hyperfine de as i, pt ii, au ii, pb ii et bi ii et du déplacement isotopique de pt ii et pb ii par interférométrie Fabry-Pérot dans l'ultraviolet lointain." Brest, 1987. http://www.theses.fr/1987BRES2027.
Full textLECAS, HARDIT ARIANE. "Etude spectroscopique et photophysique de complexes terpyridiniques mononucleaires et polynucleaires de ruthenium (ii) et d'osmium (ii)." Paris 11, 1997. http://www.theses.fr/1997PA112090.
Full textCHEHHAL, HANANE. "Complexes de catecholamines avec les cations mg(ii), co(ii), ni(ii), cu(ii), cd(ii), pb(ii) et fe(iii). Stabilite en solution aqueuse." Reims, 1996. http://www.theses.fr/1996REIMS018.
Full textHenry-Coüannier, Frédéric. "Violation et conservation de CP dans les désintégrations de Kaons neutres en II+II-II°." Aix-Marseille 2, 1995. http://www.theses.fr/1995AIX22038.
Full textDubois, Fabien. "Etude des modifications des propriétés spectroscopiques de chemosenseurs fluorescents extrinsèques en présence de cadmium (II), de zinc (II) et de mercure (II)." Doctoral thesis, Universite Libre de Bruxelles, 2002. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211410.
Full textArrué-Muñoz, Ramón. "Magnétisme coopératif dans des composés de coordination à base de Cu(II), Ni(II) et Co(II) et ligands imidazole carboxyliques." Thesis, Rennes 1, 2014. http://www.theses.fr/2014REN1S113/document.
Full textThis thesis work presents the synthesis at ambient temperature and pressure of different hybrids organic - inorganic coordination compounds. The inorganic portion is composed by transition elements from the first period 3dn divalent cobalt, nickel and copper. The selected ligands are the organic portion of these compounds, and there are the 1H-imidazol-4-carboxylic acid (H2IMC) and 1H-imidazole-4,5-dicarboxylic acid (H3IMDC)2. The inorganic component Mx+ is introduced into the terminal compound by using the molecular metallic precursor M(hfac)2 (M=Cu2+, Co2+, Ni2+; hfac=1,1,1,5,5,5-hexafluoro-2,4-pentanodione) used to obtain an acidic metal center that coordinates easily to imidazol carboxylic ligands in axial positions. All compounds were characterized by studying their magnetic properties, thermogravimetric analysis and structural characterization (resolution and refinement) on powdered samples. In all these compounds, the imidazole carboxylic ligand is linked to the central metal ion in equatorial position, by the nitrogen atom from the imidazole ring, and an oxygen atom from the carboxylic group. The magnetic measurements have revealed deviations at low temperatures to the Curie law, suggesting magnetic cooperation phenomena between the metallic centers. For the copper and nickel based compounds, the magnetic data was analyzed considering a regular chain model that has led to obtain the value of the exchange coupling constant J. For the cobalt based compounds the treatment has been different. Only the important orbital contribution (L≠ 0) to the magnetic propierties (fundamental state 4T1g for octahedral symmetry) without interaction between the metallic centers was taken into account for the data treatment
La presente tesis trata de la síntesis a temperatura ambiente y presión atmosférica de diferentes compuestos de coordinación híbridos órgano-inorgánicos. La parte inorgánica de estos compuestos está constituida por los elementos de transición divalentes del primer período 3dn: cobalto, níquel y cobre. Los ligandos utilizados constituyen la parte orgánica de estos compuestos. Los ligandos empleados son el ácido-1H-imidazol-4-carboxílico (H2IMC) y el ácido-1H-imidazol-4,5-dicarboxílico (H3IMDC). La componente inorgánica Mx+ ha sido introducida en los compuestos terminales utilizando el precursor metálico molecular M(hfac)2 (M = Cu2+, Co2+, Ni2+; hfac = 1,1,1,5,5,5-hexafluoro-2,4-pentanodiona), precursor utilizado con el fin de obtener un centro metálico ácido fácil de ser coordinado por los ligandos imidazol carboxílicos en las posiciones axiales. El conjunto de los compuestos obtenidos ha sido caracterizado mediante el estudio de sus propiedades magnéticas, análisis termogravimétrico y caracterización estructural (resolución y afinamiento) sobre muestras pulverizadas. En la totalidad de la estructuras obtenidas, el ligando imidazol carboxílico se une al metal en posiciones ecuatoriales a través del átomo de nitrógeno del anillo imidazol y un átomo de oxígeno del grupo carboxílico. Las medidas magnéticas muestran desviaciones de la ley de Curie a baja temperatura que indican fenómenos de cooperación magnética entre los centros metálicos. Estos centros metálicos han sido tratados y modelados considerando para los compuestos de cobre y níquel, un modelo de cadena regular que ha permitido estimar el valor de la constante de intercambio J. Para los compuestos de cobalto, se ha considerado la importante contribución orbital (L≠ 0) a la propiedad magnética (estado fundamental 4T1g en simetría octaédrica) sin interacción entre las especies magnéticas para el tratamiento de los datos
Saleh, Abdul R. Mulla. "Assessment of biogeochemical deposits in landfill leachate drainage systems phase II." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001787.
Full textContent, Stéphane. "Photophysique et photochimie de complexes mononucléaires du ru(II) et de l'os(II) en présence d'adn et d'oligonucléotides synthétiques." Doctoral thesis, Universite Libre de Bruxelles, 1998. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/212083.
Full textSoares, Marie C. "Synthèses et études de la réactivité des complexes ferrocénylphosphines du platine(II) et du palladium(II) /." [S.l.] : [s.n.], 1997. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=12178.
Full textMoreau, Gilles. "Etude structurale de composés de coordination d'europium(II) et de strontium(II) /." [S.l.] : [s.n.], 2002. http://library.epfl.ch/theses/?nr=2647.
Full textMimassi, Lamia. "Auto-assemblage raisonné de métallo-macrocycles et de polymères de coordination : chiralité, reconnaissance et encapsulation d'ions." Paris 6, 2005. http://www.theses.fr/2005PA066157.
Full textTROUILLET, LISE. "Nouveaux ligands polymeres solubles et conjugues : synthese et caracterisation des ligands libres et des complexes de ru(ii) et d'os(ii) correspondants." Université Joseph Fourier (Grenoble), 2000. http://www.theses.fr/2000GRE10191.
Full textGosselin, Mylène. "Clonage et caractérisation pharmacologique et biochimique du récepteur AT [indice] 1 de l'angiotensine II du furet." Sherbrooke : Université de Sherbrooke, 1999.
Find full textTay, William Maung. "Metallopeptides as model systems for the study of Cu(ii)-dependent oxidation chemistry." [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002464.
Full textWagner, William John. "Two Methodologies in Pursuit of the Elucidation of Copper (II)—Centered Bioinorganic Chemistry." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0002931.
Full textCHIBOUB, FELLAH ABDELGHANI. "Proprietes thermodynamiques et spectroscopiques des chlorocomplexes de cobalt(ii) et de nickel(ii) dans quelques solvants aprotiques." Université Louis Pasteur (Strasbourg) (1971-2008), 1991. http://www.theses.fr/1991STR13008.
Full textRoy, Stéphanie. "Construction et caractérisation de mutants immunoréactifs du récepteur AT[indice 1] de l'angiotensine II." Sherbrooke : Université de Sherbrooke, 1997.
Find full textLUBENOVA, ANTOANETA. "Etude physico-chimique et structurale de la complexation des ions du zn(ii), ca(ii) et mg(ii) par l'agent chelateur salicylaldehyde benzoyl hydrazone." Paris 7, 1997. http://www.theses.fr/1997PA077248.
Full textLaulin, Jean-Paul. "Les productions d'aldostérone et de corticostérone et leurs régulations chez le rat Brattleboro génétiquement privé de vasopressine hypothalamique." Bordeaux 1, 1993. http://www.theses.fr/1993BOR10557.
Full textChabot, Martine. "Clonage et caractérisation des récepteurs de l'angiotensine II des surrénales du hamster et clonage d'une nouvelle protéine appelée Mart." Sherbrooke : Université de Sherbrooke, 1998.
Find full textWilson, Jon L. "Shaping the Dream: A Survey of Post-World War II St. Petersburg, 1946-1963." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0003139.
Full textBoucard, Antony Jr. "Cartographie des sites de liaison entre l'angiotensine II et les récepteurs AT [indice] 1 humain et AT [indice] 2 de RAT." Sherbrooke : Université de Sherbrooke, 2000.
Find full textBarbier, Frédérique. "Rétention du plomb(II) et du cadmium(II) par une barrière argileuse : transferts métalliques et influence de la complexation." Lyon 1, 1999. http://www.theses.fr/1999LYO10256.
Full textChristmann-Franck, Serge. "Topoisomérases I et II a humaines : sites actifs et inhibiteurs." Paris 11, 2004. http://www.theses.fr/2004PA11T023.
Full textThuery, Pierre. "Transitions de spin dans la chimie moléculaire du cobalt(ii) et du fer (ii)." Paris 11, 1987. http://www.theses.fr/1987PA112341.
Full textThis work mainly deals with the spin crossover phenomenon in cobalt (II) molecular chemistry. The synthesis of a series of five- and six coordinated complexes, with Schiff bases as equatorial ligands and various apical ones, are reported. The temperature dependances of magnetic susceptibilities and EPR spectra are used to study the influence of the environment on the metal ion spin state. The behaviours observed are interpreted on the basis of simple models. Evidence is provided for thermally induced s = 1/2 - s -= 3/2 spin crossovers. In other respects, a correlation can be established between the geometry and spin state of these complexes and their ability to activate molecular oxygen. In order to specify the spin-crossover mechanism, structural and thermodynamic techniques are used: the ingle-crystal X-ray structure of one of the compounds is reported ; the mean variation of metal-ligand distances upon transition is evaluated by X-ray absorption spectroscopy; enthalpy and heat capacity changes, measured by DSC, are compared with the values calculated on the basis of a phenomenological model. A new means of detecting the crossover, by using its effect on the EPR spectrum of a Cu(II)doping ion, is described in the case of an iron (II) complex
Gamache, Dominick. "Personality organization diagnostic form-II (PODF-II) : étude d'entente interjuges et de validité interne." Master's thesis, Université Laval, 2003. http://hdl.handle.net/20.500.11794/44340.
Full textThuery, Pierre. "Transitions de Spin dans la chimie moléculaire du cobalt (II) et du fer (II)." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37610426c.
Full textNajjar, Rita. "Epitaxie de semiconducteurs II-VI:ZnTe/ZnSe et CdTe:Se : étude du confinement électronique de type-II et du dopage isoélectronique." Grenoble 1, 2008. http://www.theses.fr/2008GRE10294.
Full textThis work is based on the growth, by molecular beam epitaxy, of semiconductor heterostructures in which tellurium and selenium coexist. The goals are to develop optimized growth conditions and to study the specific physical properties due to this coexistence. More specifically, we worked on ZnTe/ZnSe type-II quantum wells and quantum dots, and on isoelectronic centers CdTe: Se. For ZnTe highly strained on ZnSe we observed a Stranski-Krastanov like relaxation and surface reorganization, but with large scale undulations. Nevertheless we managed to obtained nanometer scale islands thanks to a surface treatment based on amorphous tellurium deposition and sublimation. Then we were faced with difficulties regarding islands capping to form quantum dots. Under usual ZnSe growth conditions, the ZnTe islands are fully flattened and disappear. We propose new growth conditions to preserve the islands and obtain 0D confinement. We observe that the nanostructures we developed are never based on pure ZnTe in ZnSe but on ordered alloy ZnSeTe which forms spontaneously. We studied in details the photoluminescence and time resolved photoluminescence properties of thin ZnTe/ZnSe quantum wells and of ZnTe/ZnSe quantum dot planes. The huge difference observed between those two kinds of samples is fully explained by a model based on electrostatic and statistical peculiarity of confinement in the case of type-II band alignment. The last part of this manuscript is dedicated to the delta-doping of CdTe with selenium. We succeeded in isolating a single selenium based localization center and study the anti-bunching of photons emitted by such centers, proving that they behave as single photons emitters
Begum, Mubeena. "Gene expression profiles and clinical parameters for survival prediction in stage II and III colorectal cancer." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001554.
Full textBreault, Lyne. "Récepteurs de l'angiotensine II et développement de la surrénale humaine." Sherbrooke : Université de Sherbrooke, 1999.
Find full textEstenne, Geneviève. "Conception et synthèse d'antagonistes non-peptidiques de l'angiotensine II." Université Joseph Fourier (Grenoble), 1993. http://www.theses.fr/1993GRE18001.
Full textGuillerez, Stéphane. "Separation photoinduite des charges dans des complexes bis-terpyridine de l'osmium (ii) et du ruthenium (ii) : diades et triades moleculaires." Université Louis Pasteur (Strasbourg) (1971-2008), 1990. http://www.theses.fr/1990STR13123.
Full textLepori, Clément. "Complexes de fer(II) et de cobalt(II) de basse coordinance : synthèses, caractérisations et applications en réaction d’hydroamination des alcènes." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS509.
Full textThe nitrogenous units are present in many molecules of pharmaceutical interest. The traditional synthesis methods of these units range, for example, from the nucleophilic substitution of amines on alkyl halides to reductive amination of the carbonyl compounds. These methods, although effective, nevertheless require stoichiometric amounts of reagents to be applied and often generate large amounts of waste. One of the challenges of modern organic chemistry is to develop new methods of synthesizing these more economical and environmentally friendly patterns by producing the lowest waste rate possible. The direct addition of an amine to an unactivated carbon-carbon double bond known as the alkene hydroamination reaction is a very promising approach for the development of an alternative synthesis methodology for these compounds. Indeed, in this reaction, all the atoms of the starting substrate are transferred to the product thus considerably reducing the waste produced. In addition, the amines and olefins employed are relatively inexpensive, abundant and varied reagents. Nevertheless, this simple transformation generally requires the use of a catalyst. In the literature, the hydroamination reaction of alkenes has been studied using alkali metal, alkaline earth, rare earth and transition metal complexes as catalysts. At the beginning of this project there were no examples of the hydroamination reaction of alkenes involving unprotected primary amines catalysed by iron or cobalt complexes. In this context, our team was interested in the reactivity of iron (II) and cobalt (II) complexes of low valence stabilized by β-diketiminate ligands. These complexes have proved to be excellent catalysts for promoting the hydroamination reaction of unprotected primary amines bound to non-activated alkenes.In a first step, the syntheses of the iron (II) and cobalt (II) complexes stabilized by β-diketiminate ligands as well as their applications in cyclohydroamination reaction of the unprotected primary amines will be presented. In addition, advanced mechanistic studies will clarify the mechanism of the reaction, which is proposed to go through a key elementary 1..2 migratory insertion leading to the formation of a carbon-nitrogen bond.In a second step, the influence of the electron and steric properties of the ligands on the reactivity in the hydroamination reaction of the alkenes of the iron (II) alkyl complexes will be studied. We will focus particularly on complexes stabilized by asymmetric β-diketiminate ligands or iminoanilides. The crystallographic data of the solid state complexes will then make it possible to rationalize the variations of reactivities of these various complexes.Finally, the iron (II) and cobalt (II) complexes synthesized above will be exploited to develop new reactivities in oxidation reactions, oxidative amination or the creation of a nitrogen-silicon bond by a dehydrogenating coupling
El-Khatib, Fatima. "Synthèse, caractérisation et études magnétiques de complexes de Co(II) et de Ni(II) avec des ligands de type cryptands." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS018/document.
Full textFor molecular magnetic materials to be used in applications, they must retain their magnetization at reasonable temperatures, which can be achieved with high-energy barriers for magnetization reversal and slow relaxation of the magnetization. In the field of Single-Molecule Magnets (SMMs), over the last decade, the main focus has shifted from large spin complexes to highly anisotropic systems which have displayed high energy barriers.1 Here, we used a cryptand ligand that forces a trigonal bipyramidal arrangement to obtain a large (in absolute value) negative zero field splitting parameter D.2 In order to use these molecules as models for entangled quantum bits (qbits), the cryptand ligand was chosen to have two coordination sites allowing the design of chemically stable binuclear complexes with tunable antiferromagnetic coupling. We prepared pentacoordinate complexes of Co(II) and Ni(II) with different bridging ligands (Cl-, Br-, NO3-, N3-, Im-, etc.). Magnetic measurements indicated an Ising type anisotropy and weak antiferromagnetic coupling as expected from the nature of the bridging ligands (N3- and Im-) and the trigonal bipyramidal geometry around the metal ions
Gautret, Philippe. "Conception, synthèse et étude des propriétés chimiques et biochimiques d'analogues de la podophyllotoxine." Lille 1, 1994. http://www.theses.fr/1994LIL10163.
Full textLaflamme, Liette. "Rôles et mécanismes d'action du récepteur AT [indice 2] de l'angiotensine II dans la différenciation des cellules NG108-15." Sherbrooke : Université de Sherbrooke, 1999.
Find full textJouini, Mohamed. "Etude physico-chimique de complexes peptidiques du cuivre (II) et du nickel (II) en solution." Paris 7, 1985. http://www.theses.fr/1985PA077054.
Full textMarques, Maria José. "Electrodes modifiées par électropolymérisation de complexes dibenzotétraaza[14] annulène de nickel(II) et cuivre(II)." Grenoble 1, 1991. http://www.theses.fr/1991GRE10023.
Full textMeulon, Emmanuelle. "Conception et synthèse de ligands potentiels des récepteurs AT1 et AT2 de l'angiotensine II." Lille 1, 2000. https://pepite-depot.univ-lille.fr/RESTREINT/Th_Num/2000/50376-2000-156.pdf.
Full textCosson, Claudine. "Propriétés des prolidases I et II d'origine humaine." Paris 11, 1991. http://www.theses.fr/1991PA114829.
Full textFoulquier, Sébastien Lartaud Isabelle. "Balance sodée et vasoréactivité cérébrale à l'angiotensine II." [S.l.] : [s.n.], 2008. http://www.scd.uhp-nancy.fr/docnum/SCDPHA_T_2008_FOULQUIER_SEBASTIEN.pdf.
Full textDouglas, Michael Jay. "The impacts of the handoffs on software development : a cost estimation model." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001692.
Full textPérodin, Jacqueline. "Étude conformationnelle de l'angiotensine II et du récepteur AT [indice] 1 humain." Sherbrooke : Université de Sherbrooke, 2000.
Find full textDeffrennes, Virginie. "Étude de la régulation du CMH II : situation normale et pathologique." Paris 6, 2002. http://www.theses.fr/2002PA066093.
Full textLeveque, Julien. "Synthèse électrochimie et photophysique de composés polynucléaires et dendritiques du Ruthénium(ii)." Doctoral thesis, Universite Libre de Bruxelles, 2003. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211236.
Full textWang, Xiaorong. "Polymères push-pull sur la base de platine ( II ) complexes ou porphyrinzinc ( II ) et des dérivés quinoniques : synthèse et étude photophysique." Thèse, Université de Sherbrooke, 2015. http://hdl.handle.net/11143/7698.
Full textAbstract : In recent decades, the design of new « push-pull » polymers has been the subject of intense research for photovoltaic cell applications. This thesis deals with two main subjects, one is the synthesis and characterization of organometallic trans-bis(ethynyl)bis(tributylphosphine)platinum(II), ([Pt]) and quinone or anthraquinone derivatives-based polymers. Some model compounds have been produced as well for comparison purposes. Another issue is the synthesis and characterization of polymers built upon zinc(II)porphyrin units and the same quinone and anthraquinone derivatives respectively acting as donor and acceptor of electronic density. Such «push-pull» polymers are used to be investigated because of their so-called charge transfer absorption bands in the red part of the solar spectrum. This phenomenon is due to the electronic communication over the whole chain. This new band allows the material to collect more photons. The whole work is divided into four chapters.
CHALARD, PIERRE. "Cyclisation d'allylsilanes chiraux sur des ions n-acyliminium. Syntheses totales enantioselectives des ()-lasubines i et ii, (+)-subcosine ii et ()-indolizidine 167b." Clermont-Ferrand 2, 1999. http://www.theses.fr/1999CLF22093.
Full textDe, Buyl François F. "Complexes polypyridiniques du ruthénium (II) dans des systèmes polymériques." Doctoral thesis, Universite Libre de Bruxelles, 1990. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/213140.
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