Academic literature on the topic 'Modèle physicochimique'
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Journal articles on the topic "Modèle physicochimique":
Paaza, Namira El Amrani, Marie Larocque, and José Benavente Herrera. "Modèle conceptuel de circulation hydrogéologique au niveau de l’aquifère plioquaternaire de Settat (Maroc) : étude hydrogéochimique." Revue des sciences de l’eau 31, no. 4 (January 21, 2019): 401–14. http://dx.doi.org/10.7202/1055597ar.
SARR, Serigne Omar. "TABLE OF CONTENTS." International Journal of Pharmaceutical Physico-chemical and Nutritional Analysis 2, no. 1 (March 1, 2024): 1. http://dx.doi.org/10.61585/ucad-ijppna-v2i100.
LAOUFI, Razika, Khaled BOUDJEMA, Samia LEFKIR, Narimen BENHABYLES, Ouahiba BOUCHENAK, and Karima YAHIAOUI. "Valorization and biological effect of Zizuphus jujuba Mill. vegetable oil." Nutrition & Santé 12, no. 01 (June 30, 2023): 38–47. http://dx.doi.org/10.30952/ns.12.1.5.
MICHELLAND, R., S. COMBES, V. MONTEILS, C. BAYOURTHE, L. CAUQUIL, F. ENJALBERT, C. JULIEN, et al. "Analyse comparée des écosystèmes digestifs du rumen de la vache et du caecum du lapin." INRAE Productions Animales 25, no. 5 (December 10, 2012): 395–406. http://dx.doi.org/10.20870/productions-animales.2012.25.5.3227.
Lavoie, Michel, Peter G. C. Campbell, and Claude Fortin. "Importance de mieux connaître les mécanismes de transport des métaux pour la prédiction de l’accumulation et de la toxicité des métaux dissous chez le phytoplancton : récentes avancées et défis pour le développement du modèle du ligand biotique." Revue des sciences de l’eau 29, no. 2 (June 6, 2016): 119–47. http://dx.doi.org/10.7202/1036544ar.
Chouchane, Toufik, Sabiha Chouchane, and Atmane Boukari. "Elimination du manganèse en solution par le kaolin Etude cinétique et thermodynamique." Journal of Renewable Energies 16, no. 2 (October 22, 2023). http://dx.doi.org/10.54966/jreen.v16i2.382.
DUCROT, C., J. CHARLEY-POULAIN, and J. M. AYNAUD. "Numéro hors série 2004 : Encéphalopathies spongiformes transmissibles animales -Sommaire et avant-propos." INRAE Productions Animales 17, HS (December 18, 2004). http://dx.doi.org/10.20870/productions-animales.2004.17.hs.3612.
DUCROT, C. "Chapitre 2 : La protéine prion cellulaire (PrPc) : propriétés et rôle physiologique." INRAE Productions Animales 17, HS (December 20, 2004). http://dx.doi.org/10.20870/productions-animales.2004.17.hs.3623.
Dissertations / Theses on the topic "Modèle physicochimique":
Trunfio, Sfarghiu Ana-Maria. "Modèle bio-tribologique des articulations : rôle mécanique et physicochimique des assemblages moléculaires du fluide synovial." Lyon, INSA, 2006. http://theses.insa-lyon.fr/publication/2006ISAL0108/these.pdf.
The aim of this work is to analyse the role of the molecular assemblies of the synovial fluid in the tribological function of a healthy or prosthetic natural joint. For that, it was conceived and used a realistic ex vivo model capable of reproducing the mechanical and physiochemical characteristics of the natural joint. This model reconstitutes: the properties of articular cartilage using polymeric materials like hydrogels. The structures associated with synovial fluid (lipid multilayer and synovial gel vehicles) using nanostructural physics techniques as lipidic deposit by bursting of blisters and co adsorption of micelles, fabrication of liposomes and atomic force microscopy. The evolution of these molecular assemblies during friction tests is visualized in situ using fluorescence microscopy and fluorescents molecular markers. The experimental results correlated with a numerical model for the lipidic multilayer allow locating where and how carried out the velocity accommodation between the molecular assemblies of synovial fluid in order to explain the origins of the values obtained after friction force measurements. As an example, if the velocity accommodation is localized in the synovial gel, friction coefficient is 0. 15, whereas it is just 0. 0015 when the accommodation is localized between the lipidic multilayer. As for applications, others results showed that the hydrogel, used as articular cartilage model, favors the formation and preservation of lipidic multilayer, but this is not the case for the implants materials such as stainless steel and polyethylene
Siebor, Eliane. "Caractérisation physicochimique et immunologique de ß-lactamases chez les entérobactéries : un modèle d'étude chez le genre Serratia." Lyon 1, 1989. http://www.theses.fr/1989LYO10004.
Campos, Assunção Mariana. "Etude physicochimique et formulation d'un nouveau solvant d'extraction pour la purification de l'acide phosphorique." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066045/document.
This PhD thesis was focused on the development of new extraction systems to purify phosphoric acid from wet phosphoric acid (WPA). The new system should be respectful of the current Prayon’s process flowsheet designed for the use of the mixture tri-n-butyl phosphate(TBP) and diisopropyl ether (DiPE) as extraction solvent. Firstly, extractants exhibiting different structures and functional groups were screened in order to assess their efficiency and selectivity towards phosphoric acid. Three new promising extraction systems were identified: diisobutyl ether (DBE), diisocarbinol (DiBC) in DiPE, and Fentamine T0810 (ATS) in DiPE. Secondly, our effort was directed to the comprehension of the physico-chemical phenomena involved in the extraction of phosphoric acid by the mixture TBP/DiPE at first, and enriched to describe the other systems studied later. Finally, a simulation model describing the solvent extraction of phosphoric acid by the solvent currently employed by Prayon is presented. This model accounts for the significant volume variation during the extraction of phosphoric acid and allows performing optimizations of extraction parameters even at very high phosphoric acid concentrations (6-14M)
Asmani, Mohamed. "Contribution à l'étude de l'interaction des ultrasons avec les milieux biologiques." Valenciennes, 1994. https://ged.uphf.fr/nuxeo/site/esupversions/f95e1d1f-7e98-47bc-8b7e-ba9d4907a113.
Kasperek, Joseph. "Contribution à l'étude de la germination et de la croissance du graphite dans les fontes synthétiques. Etude physicochimique de quelques oxydes mixtes de manganèse à structure spinelle." Rouen, 1992. http://www.theses.fr/1992ROUES011.
Zimmermann, Valérie. "Simulation numérique de la formation de l'ozone et des oxydants photochimiques dans la troposphère : validation d'un modèle physicochimique et étude des caractéristiques structurales et cinétiques des mécanismes chimiques associés." Lille 1, 1989. http://www.theses.fr/1989LIL10074.
Mustin, Christian. "Approche physico-chimique et modélisation de l'oxydation bactérienne de la pyrite par thiobacillus ferrooxidans : rôle déterminant de la phase minérale." Nancy 1, 1992. http://www.theses.fr/1992NAN10400.
Taupin, Claire. "La séryl-ARNt synthétase d'Haloarcula marismortui : purification, stabilité, séquençage du gène, expression, modèle structural et étude phylogénétique." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10215.
Mangold, Lucas. "Étude multi-techniques et multi-échelles de la spéciation du titane(IV) dans l’acide phosphorique concentré." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0025.
The conventional wet-process of production of phosphoric acid consists of a leaching of phosphate ores with sulfuric acid during which several impurities (metallic, sulfate, chloride are dissolved concomitantly. Phosphoric acid and phosphate salts are used in various applications such as fertilizers, food additives, electronic etching agent or pharmaceutical excipients and must therefore meet appropriate of specifications regarding their purity. As a consequence, the concentration of these impurities must be reduced by performing purification steps. At the industrial scale, the purification of phosphoric acid is performed mainly by liquid-liquid extraction. The operation consists in extracting as selectively as possible the phosphoric acid molecules initially contained in the leaching juice into an appropriate organic phase. However this process is not selective enough and some of the impurities are co-extracted. This leads to the necessity of performing additional purification steps to meet the requested specifications, which increases both the complexity of the global treatment and its cost. The knowledge of the speciation of impurities in concentrated phosphoric acid is essential to understand the physicochemical reasons for their co-extraction and, in fine, to design more selective extraction solvents. For example, the solvents presently used for the purification of H₃PO₄ are not selective enough against titanium(IV). Thus, this PhD thesis work aims at characterizing the speciation of this metal in a large range of phosphoric acid concentration, in order to identify subsequently the equilibria responsible for its co-extraction with H₃PO₄. This thesis is based on an original approach combining the use of spectroscopic and molecular modeling techniques. Synthetic solutions containing both titanium(IV) and phosphoric acid have been characterized using different spectroscopic techniques including UV-Visible, Nuclear Magnetic Resonance (³¹P NMR) and X-Ray Absorption (XAS) spectroscopies. Thus, the structure of the complexes formed in phosphoric acid has been studied by comparing UV-Visible spectra and calculations implementing time-dependent density functional theory (TD-DFT). The nuclearity of these complexes has also been estimated by comparing the values of the self-diffusion coefficients determined experimentally by ³¹P NMR with the values calculated by molecular dynamics for different species of titanium (IV) potentially present in solution. The coordination of titanium (IV) was also studied by analyzing the EXAFS (Extended X-Ray Absorption Fine Structure) spectra using ab-initio molecular dynamics simulations explicitly taking into account the solvation of the complexes.Finally, UV-Visible spectral data have been analyzed by a chemometric approach, based on a principal component analysis (PCA), allowing us to extract quantitative information about the distribution of the complex species identified in concentrated phosphoric acid. From all these results, it was possible to propose for the first time a diagram of speciation of titanium (IV) in phosphoric acid for a range of concentrations between 6 and 13 mol.L⁻¹, underlining the evolutionary presence of three mono- and poly-nuclear titanium (IV) complexes, the predominant species of which is [Ti(OH)(H₃PO₄)₂(H₂PO₄)]²⁺
Roth, Eberhard. "Protéines fer-soufre : caractérisation et études physicochimiques de modèles biomimétiques." Grenoble 1, 1990. http://www.theses.fr/1990GRE10147.