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Artykuły w czasopismach na temat "Faible réactivité"
RICHARD, S., C. ARNOULD, D. GUÉMENÉ, C. LETERRIER, S. MIGNON-GRASTEAU i J. M. FAURE. "Etude de la réactivité émotionnelle chez la caille : une approche intégrée du bien-être animal". INRAE Productions Animales 21, nr 1 (22.04.2008): 71–78. http://dx.doi.org/10.20870/productions-animales.2008.21.1.3377.
Pełny tekst źródłaCouderchet, Laurent. "Le tropisme viticole et la fermeture des paysages dans le nord de la Gironde". Sud-Ouest européen 21, nr 1 (2006): 77–82. http://dx.doi.org/10.3406/rgpso.2006.2914.
Pełny tekst źródłaRigal, N., V. Godefroy i B. Rubio. "Le tempérament, un puissant déterminant des conduites alimentaires de l’enfant". European Psychiatry 30, S2 (listopad 2015): S30—S31. http://dx.doi.org/10.1016/j.eurpsy.2015.09.090.
Pełny tekst źródłaChoppin, S., i C. Henry. "Caractéristiques cliniques pour un meilleur choix thérapeutique dans la dépression bipolaire". European Psychiatry 30, S2 (listopad 2015): S57—S58. http://dx.doi.org/10.1016/j.eurpsy.2015.09.160.
Pełny tekst źródłaAgbekodo, K., B. Legube, P. Côté i M. M. M. Bourbigot. "Performance de la nanofiltration pour l'élimination de la matière organique naturelle: essais sur l'usine de Méry/Oise". Revue des sciences de l'eau 7, nr 2 (12.04.2005): 183–200. http://dx.doi.org/10.7202/705196ar.
Pełny tekst źródłaVEISSIER, I. "Intérêts de l’analyse comportementale dans les études de bien-être : le cas des veaux de boucherie". INRAE Productions Animales 9, nr 2 (17.04.1996): 103–11. http://dx.doi.org/10.20870/productions-animales.1996.9.2.4039.
Pełny tekst źródłaBen Amor, H., J. De Laat i M. Doré. "Oxydation d'un acide humique aquatique par le bioxyde de chlore. Incidences sur une post-chloration et sur un traitement au charbon actif". Revue des sciences de l'eau 3, nr 1 (12.04.2005): 83–99. http://dx.doi.org/10.7202/705066ar.
Pełny tekst źródłaCANDELIER, Kévin, Jean-François TRÉBUCHON i Clarisse VAUTRIN. "Bois et Forêts des Tropiques une revue pour la promotion des sciences forestières appliquées et les partenariats Sud-Nord et Sud-Sud". BOIS & FORETS DES TROPIQUES 354 (1.12.2022): 3–6. http://dx.doi.org/10.19182/bft2022.354.a37109.
Pełny tekst źródłaTogola, OB, Y. Ballayira, B. Traoré, Ken Kayembé, O. Sangho, H. N'Diaye, S. Ouattara i H. Yacouyé. "Évaluation surveillance de la rougeole, CSCom Central de Tominian, 2009 à 2018". Mali Santé Publique, 31.12.2019, 46–50. http://dx.doi.org/10.53318/msp.v9i02.1506.
Pełny tekst źródłaRozprawy doktorskie na temat "Faible réactivité"
Prom, Marie-Rose. "Solubilisation d'une huile essentielle dans un milieu hydroalcoolique à faible teneur en alcool". Montpellier 2, 1990. http://www.theses.fr/1990MON20283.
Pełny tekst źródłaTchalala, Mohamed Rachid. "Croissance et réactivité du silicène". Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112287/document.
Pełny tekst źródłaThe objective of this thesis is the study of the growth of silicene on silver substrates as well as its reactivity towards the oxygen. The growth was performed under ultra-high vacuum and controlled by Auger electrons spectroscopy (AES) and low energy electrons diffraction (LEED). The obtained structures and their relativities towards the oxygen were studied by near field microscopy (STM and nc-AFM) and by angle resolved electrons photoemission spectroscopy (ARPES). We have studied the internal structure of the selfassembled silicene nanoribbons on Ag(110) substrate. On Ag(111), we have obtained a silicene sheet presenting different structures versus the temperature of the substrate. The reactivity of silicene nanoribbons and sheets grown on silver show that silicene is relatively stable towards the oxygen which opens a new perspectives of functionalization of the silicene. The last part of this thesis concerns the synthesis of silicone sheets by chemical process. We have develpped a new promising process of chemical synthesis which allowed us to synthesize silicon sheets with graphitic structure
Pollaud-Chérion, Cécile. "Réactivité des monocytes-macrophages au cours de leur transformation en cellules spumeuses par les lipoprotéines de faible densité modifiées. Etudes expérimentales et cliniques. Implication dans l'athérosclérose". Toulouse 3, 1997. http://www.theses.fr/1997TOU30038.
Pełny tekst źródłaBarkouti, Amal. "Agglomération humide de poudres à réactivité de surface : approche mécanistique de la morphogénèse de structures alimentaires agglomérées". Thesis, Montpellier 2, 2012. http://www.theses.fr/2012MON20122/document.
Pełny tekst źródłaWet agglomeration is a crucial step in the shaping technology of powders because of its strong impact on the final quality of the elaborated products. Despite its interest in the elaboration of many products (food, pharmaceutical, engineering,...) as well as different technological process (horizontal mixers, vertical, low or high shear rate, fluidized bed, ...), it remains insufficiently mastered due to the difficulty in establishing operating diagrams taking into account, in the same time, products and process contributions. This thesis focuses on the study of the agglomeration mechanisms related to the characteristics of the formulation and process parameters. The identification and representation of the way particles come together during the wetting / mixing operation is one of the central challenges of this work. From experiments with two different food powders (durum wheat semolina and milk powder), agglomeration is induced either by wet contacts in mixer at low shear rate or by collisions between sticky particles in a fluidized bed. Mechanisms of semolina wet agglomeration developed in a low shear mixer are described as a process of morphogenesis that correlates the agglomerates size to their texture via a fractal dimension. The influence of the liquid binder physicochemical properties on the agglomeration mechanisms is studied according to the values taken by the fractal parameters of the model. The detailed study of the distribution of size and textural properties of agglomerated structures make it possible to identify the rule that lead to their layout: the association is mainly possible between structures belonging to the same class concerning their hydro-textural and dimensional characteristics. Agglomeration regimes depending on the mode of water supply (low flow, high flow) are studied based on the notion of dimensionless spray flux. Concerning milk powder agglomeration in a fluidized bed, agglomeration mechanisms are studied by following the evolution of the size and water content of the samples taken during the operation of wetting / drying and thereafter studying the impact of some operational conditions and formulation on the properties of the final agglomerates and agglomeration regimes. A link between the processes (low shear mixer and fluidized bed) is discussed and opens onto a redefinition of granular flow regimes and the surface reactivity of particles
Barkouti, Amal. "Agglomération humide de poudres à réactivité de surface - Approche mécanistique de la morphogenèse de structures alimentaires agglomérées". Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2012. http://tel.archives-ouvertes.fr/tel-00796735.
Pełny tekst źródłaDe, Campos Matthieu. "Valorisation de matière faiblement radioactive comme réactif dans la synthèse de matrices cimentaires". Thesis, Lille 1, 2020. http://www.theses.fr/2020LIL1R016.
Pełny tekst źródłaIn the context of pressurized water nuclear reactors (PWRs), fuel fabrication generates low-level radioactive materials in the form of low-reactivity and relatively dense metal oxides. These materials, in the form of aggregates, are currently stored pending their reuse in nuclear fuel or in alternative solutions. This thesis studies their valorization as additives in the synthesis of cement matrices (pastes and mortars), for the development of shielding materials against ionizing radiation, such as γ rays. The state of the art (Chapter I) focuses on the generation of this weakly radioactive material in the French nuclear fuel cycle, on the photon-matter interactions, on cementitious matrices, and on the use of radioactive materials in cementitious matrices. The experimental work has required to develop miniaturized physico-chemical characterization methods adapted to radioactive materials (Chapter II), in order to compare them with formulations using non radioactive analogs. For the development of cement-based materials, a magnesium potassium phosphate cement (MKPC) and a pure Portland cement are used. Workability, setting time, mechanical compressive strength, dimensional stability, homogeneity of the microstructure and temperature resistance are optimized. For MKPC pastes, the mechanical strength depends on the MgO/KH2PO4 molar ratio (Chapter III). In order to optimize the integration of the dense metal oxides, MKPC are formulated at stoichiometry, although this composition, without additives, is characterized by significant swelling. The addition of powdered mineral additives (fly ash, dense metal oxides) enabled to inhibit swelling and avoid phase segregation. With Portland cement, the incorporation of metal oxides is performed on mortars, with a granular skeleton (Chapter IV), and it is carried out in two ways: either as a supplement to an optimized formulation, or by volume replacement of the fine parts of the granular skeleton. In both cases, compressive strengths are obtained with values above 50 MPa at 28 days, and a good resistance to temperatures up to nearly 250°C. A third incorporation method is possible, which requires the synthesis of cement/metal oxide granules. The fifth and last chapter compares the mechanical and shielding performances of cement matrices incorporating the dense metal oxides. It also quantifies the interactions of these metal oxides with the environment (by reactivity experiments in contact with cementitious waters at ambient temperature and pressure or beyond, and leaching tests). Depending on the performance of the two types of cement matrices developed, different uses are possible, e.g. waste encapsulation or structural and temperature resistant materials
Cornu, Damien. "Etude des paramètres influençant la réactivité de bases inorganiques faibles : application à la catalyse hétérogène de transestérification". Phd thesis, Université Pierre et Marie Curie - Paris VI, 2012. http://tel.archives-ouvertes.fr/tel-00828477.
Pełny tekst źródłaMeriggio, Elisa. "Adsorption of chiral molecules in oxide-supported heterogeneous catalysts : a model approach". Electronic Thesis or Diss., Sorbonne université, 2019. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2019SORUS550.pdf.
Pełny tekst źródłaEnantioselective heterogeneous catalysis is a method of choice for the synthesis of enantiopure chiral products. One current approach involves the modification of a metal surface by a chiral modifier. Despite its great potential, only a small number of successful systems have been developed so far. Most of fundamental works have been devoted to model systems based on single crystal metal surfaces while the role of the oxide support in supported metal catalysts have usually been overlooked. To date, fundamental questions remain on the role of the oxide support on the chiral induction. A rational design of the catalyst requires therefore a molecular scale description of the interactions between the oxide support, the metal nanoparticles and the chiral modifier. In this context, this study aims at understanding the interactions between these three partners through a surface science approach. To mimic the catalytic system, rutile TiO2(110) single crystals, Tartaric Acid molecules (TA) and Ni nanoparticles have been selected. The chemical nature of TA is explored on TiO2(110) by X-ray and Ultraviolet Photoemission Spectroscopy (XPS/UPS) and High Resolution Electron Energy Loss Spectroscopy. Scanning Tunnelling Microscopy (STM) and Low-Energy Electron Diffraction are employed to study the TA layer structure and anchoring points. The molecular decomposition behaviour is studied by Thermal Programmed Desorption (TPD). In parallel, XPS, STM and Surface Differential Reflectivity Spectroscopy are used to probe the growth of Ni NPs on TiO2 at increasing Ni coverage. Finally, perspectives on the TA/Ni/TiO2 system are put forward mainly by XPS and TPD
Mukhamediyarova, Akerke. "Microbiological Enhanced Oil Recovery : Model of Kinematic Waves and Asymptotic Analysis". Electronic Thesis or Diss., Université de Lorraine, 2020. http://www.theses.fr/2020LORR0301.
Pełny tekst źródłaOne of the strategic objectives of the modern oil industry is the efficient development of high-viscosity oil reserves, which are characterized by low mobility leading to a sharp decline in the oil recovery factor. The development of such reservoirs by traditional methods (natural drives, waterflooding etc.) is frequently not efficient. The alternative is an application of active recovery methods, in other words, enhanced oil recovery methods. In this thesis we analyze the problems of modelling the displacement of oil by water in presence of bacteria producing some active chemicals that change favorably the properties of oil and water. More strictly, we analyze the bacteria producing biosurfactant that reduces the negative effects of capillary oil trapping in porous media. Such a problem makes part of the general theory of multiphase multicomponent partially miscible flow with chemical reactions, coupled with the dynamics of population. The general mathematical model of the process is presented, which is reduced next to the model of kinematic waves, due to several admissible simplifications. More exactly, we have obtained the system of five nonlinear partial differential equations of the first order, which can have discontinuous solutions. Such a system can be studied only numerically in the general case. However, we have shown that for a particular case this model can be completely analyzed qualitatively. For such an analysis, we have introduced the concept of weak bioreactivity. It corresponds to the asymptotic behavior of the general model as the rate of bacterial kinetics tends to zero. Applying the technique of asymptotic expansions, we have obtained the semi-analytical solution to the displacement problem. In particular, this offered us the possibility to detect the discontinuities (chocks) of various types and to analyze exactly their structure. The general case of arbitrary kinetic rate was studied numerically, by using the code COMSOL MULTIPHYSICS. We analyzed the impact of the microbial growth rate, microbial and nutrient concentrations, the form of kinetic functions and the viscosity ratio on the oil recovery. In the last chapter, we simulated a field case for a Kazakhstani oil field. The main and unique tool of studying MEOR was the numerical analysis, whilst analytical solutions were missing. The semi-analytical solutions we have obtained fill this gap. They represent exact results that could be used to check the validity of various numerical schemes and codes
Części książek na temat "Faible réactivité"
CADDEO, Julie. "L’action des pouvoirs locaux face aux crises épidémiques au XVIIIe siècle". W Les épidémies au prisme des SHS, 99–108. Editions des archives contemporaines, 2022. http://dx.doi.org/10.17184/eac.5995.
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