Academic literature on the topic 'Dissolution (Chimie)'
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Journal articles on the topic "Dissolution (Chimie)"
Ben Moussa, Amor, Houcem Mzali, Hatem Elmejri, and Sarra Bel Haj Salem. "Apport des outils hydrogéochimiques à l'évaluation de la qualité et l'aptitude des eaux souterraines à l'irrigation : cas de la nappe phréatique de la basse vallée de Medjerda, Tunisie Nord-Orientale." La Houille Blanche, no. 5-6 (December 2019): 35–44. http://dx.doi.org/10.1051/lhb/2019053.
Full textLykknes, Annette. "Ellen Gleditsch: Woman Chemist in IUPAC’s Early History." Chemistry International 41, no. 3 (July 1, 2019): 26–27. http://dx.doi.org/10.1515/ci-2019-0309.
Full textTulio J. Villorín S. "Perfil de Estilos de Pensamiento como eje estructurante de una propuesta didáctica innovadora en Química." GACETA DE PEDAGOGÍA, no. 41 (December 6, 2021): 153–75. http://dx.doi.org/10.56219/rgp.vi41.942.
Full textBrugger, Joël, Aoife McFadden, Claire E. Lenehan, Barbara Etschmann, Fang Xia, Jing Zhao, and Allan Pring. "A Novel Route for the Synthesis of Mesoporous and Low-Thermal Stability Materials by Coupled Dissolution-Reprecipitation Reactions: Mimicking Hydrothermal Mineral Formation." CHIMIA International Journal for Chemistry 64, no. 10 (October 29, 2010): 693–98. http://dx.doi.org/10.2533/chimia.2010.693.
Full textAlderdice, Lord John. "Desiderio, morte e dialogo. Occuparsi di terrorismo." GRUPPI, no. 3 (June 2009): 29–53. http://dx.doi.org/10.3280/gru2008-003003.
Full textRicifari, Rebecca. "Sul mancato riconoscimento di un ordine inglese di revoca di conferimento in trust (Cass., 8 giugno 2023, n. 16294)." Trusts, no. 6 (December 7, 2023): 1148–60. http://dx.doi.org/10.35948/1590-5586/2023.466.
Full text"Bioperformance Improvement: Small Particles and Optimal Polymorphs." CHIMIA 55, no. 9 (September 26, 2001): 699. http://dx.doi.org/10.2533/chimia.2001.699.
Full text"Photolithography at the Limits of Optical Resolution." CHIMIA 47, no. 10 (October 27, 1993): 387. http://dx.doi.org/10.2533/chimia.1993.387.
Full text"Multielement Analysis of Tin-Lead Solder by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES)." CHIMIA 48, no. 6 (June 29, 1994): 213. http://dx.doi.org/10.2533/chimia.1994.213.
Full textBotti, Federica. "Libertà religiosa, patrimonio culturale e identità: il caso del Montenegro." Stato, Chiese e pluralismo confessionale, October 19, 2022. http://dx.doi.org/10.54103/1971-8543/18916.
Full textDissertations / Theses on the topic "Dissolution (Chimie)"
Driouche, Mohammed. "Caractérisation des alumino-silicates par dissolution dans l'acide fluorhydrique dilué." Lyon, INSA, 1987. http://www.theses.fr/1987ISAL0020.
Full textPatel, Saket. "Development of polarizing agents for dissolution-dynamic nuclear polarization technique." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0729/document.
Full textNMR and MRI play a key role in science and notably in chemistry and clinical research. Both NMR and MRI techniques suffer from sensitivity limitation and hyperpolarization can help push back this limitation by increasing the signal by 1-4 orders of magnitudes. Dynamic nuclear polarization (DNP) is one of the most widely used method to overcome the sensitivity limitation of NMR/MRI. This thesis concerns the design and synthesis of new improved UV-induced non-persistent polarizing agents for dissolution DNP and matrix dependence of the magnetic properties of free radical at high magnetic field and low temperature. The DNP efficiency of UV-induced polarizing agents has been tested at 6.7 T and 1 K. Herein, we overcome the issue of providing UV-radical precursors that are not involved in any metabolic pathway, improvement in generated radical yield, and 13C dDNP performances. The DNP efficiency of these radicals was tested for the [U-2H, U-13C]-D-glucose and 13C-dihydroxyacetone (DHAc). In the optimal conditions, for glucose polarization, a usable liquid-state polarization of 32% has been achieved, the highest value reported in the literature to date. Additionally, photo-irradiation of phenylglyoxylic acid (PhGA) using visible (Vis) light instead of UV-light produced a non-persistent radical that can be used to hyperpolarize UV-sensitive probes. Furthermore, matrix dependence and effect of [Gd] 3+ complex on trityl radical (AH111501) relaxation time (T1e), high field EPR study, and dDNP experiment on [U-2H, U-13C]-D-glucose has been studied at 6.7 T
Patel, Saket. "Development of polarizing agents for dissolution-dynamic nuclear polarization technique." Electronic Thesis or Diss., Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0729.
Full textNMR and MRI play a key role in science and notably in chemistry and clinical research. Both NMR and MRI techniques suffer from sensitivity limitation and hyperpolarization can help push back this limitation by increasing the signal by 1-4 orders of magnitudes. Dynamic nuclear polarization (DNP) is one of the most widely used method to overcome the sensitivity limitation of NMR/MRI. This thesis concerns the design and synthesis of new improved UV-induced non-persistent polarizing agents for dissolution DNP and matrix dependence of the magnetic properties of free radical at high magnetic field and low temperature. The DNP efficiency of UV-induced polarizing agents has been tested at 6.7 T and 1 K. Herein, we overcome the issue of providing UV-radical precursors that are not involved in any metabolic pathway, improvement in generated radical yield, and 13C dDNP performances. The DNP efficiency of these radicals was tested for the [U-2H, U-13C]-D-glucose and 13C-dihydroxyacetone (DHAc). In the optimal conditions, for glucose polarization, a usable liquid-state polarization of 32% has been achieved, the highest value reported in the literature to date. Additionally, photo-irradiation of phenylglyoxylic acid (PhGA) using visible (Vis) light instead of UV-light produced a non-persistent radical that can be used to hyperpolarize UV-sensitive probes. Furthermore, matrix dependence and effect of [Gd] 3+ complex on trityl radical (AH111501) relaxation time (T1e), high field EPR study, and dDNP experiment on [U-2H, U-13C]-D-glucose has been studied at 6.7 T
Ziouane, Yannis. "Dissolution de poudres d'oxydes mixtes (U,Pu)O2 monophasées." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTS005.
Full textThe main objective of this study is to acquire data on the dissolution of (U, Pu)O2 compounds to support the understanding of the phenomena occurring during the dissolution steps of MOX fuels irradiated in light water or sodium fast reactors. Previous studies, in particular on unirradiated MOX fuel, have highlighted the complexity of understanding the dissolution mechanisms through a direct approach. Indeed, the dissolution depends on a large number of parameters, which are mainly chemical dissolution parameters (acidity, temperature…). But it also depends on the physico-chemical characteristics of the fuel pellets (plutonium content, homogeneity of the plutonium content, microstructure, geometry...), a majority of which being highly dependent on the manufacturing process used. To avoid getting averaged responses due to the presence of heterogeneity in the Pu distribution in pellets, it is proposed to carry out a study on single-phase compounds in the shape of powders characterized by a well-defined stoichiometry (U and Pu) and a perfectly determined morphology. A step approach allowed the determination of the key parameters controlling the dissolution kinetics of these actinide oxides (specific surface area, crystal size, Pu content, activity of nitrate ions, dissolution temperature).A global kinetics law describing the dissolution kinetics of U1-xPuxO2 oxides was established from 45 dissolution tests (with 0≤x≤1, [HNO3] and temperature ranging from 1.5 to 8.5M and from 50 to 95°C respectively). Despite the 5 orders of magnitude between dissolution kinetics of UO2 and PuO2, the model shows a good precision. Additional dissolution tests were conducted on different single-phase oxide powders to validate the predictive quality of this model
Badie, Jérôme. "Réduction de l'iodure d'argent en solution aqueuse : application à la séparation poussée de l'iode lors du traitement des combustibles nucléaires usés." Aix-Marseille 3, 2002. http://www.theses.fr/2002AIX30005.
Full textSilver iodide is a key-compound in nuclear chemistry either in accidental conditions or during the reprocessing of spent nuclear fuel. In french reprocessing plants, iodine is trapped in the dissolver off-gas treatment unit by scrubbing with a caustic soda solution and by chemisorption on mineral porous traps impregnated with silver nitrate, leading to the production of silver iodide and silver iodate. Enhanced separation policy would make necessary to recover iodine from the filters by silver iodide dissolution during a reducing treatment. For this purpose, ascorbic acid and hydroxylamine were used
Loodts, Vanessa. "Influence of chemical reactions on convective dissolution: a theoretical study." Doctoral thesis, Universite Libre de Bruxelles, 2016. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/242093.
Full textDoctorat en Sciences
info:eu-repo/semantics/nonPublished
Lemaigre, Lorena. "Convective patterns triggered by chemical reactions, dissolution and cross-diffusion: an experimental study." Doctoral thesis, Universite Libre de Bruxelles, 2016. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/229759.
Full textThe understanding of the effect of chemical reactions on fluid motions is an issue at the heart of numerous applications, such as polluted soil remediation or geological storage of CO2. In this context, the goal of our work is to understand through an experimental approach to what extent a chemical reaction is able to modify the development and the properties of buoyancy-driven convective patterns. Our experiments are carried out by putting in contact reactive aqueous solutions or non reactive liquids in a vertical Hele-Shaw cell. This model reactor consists in two glass plates separated by a thin gap and is commonly used to study fluid motions at the laboratory scale. We analyze in various cases the spatio-temporal structures resulting from the build-up of unstable density gradients due to chemical reactions, dissolution processes or cross-diffusion. During our thesis, we first studied the interplay between an acid-base reaction and buoyancy-driven instabilities, namely double diffusion and the Rayleigh-Taylor instability. We have shown that this simple A+B -->C type of reaction breaks the up-down symmetry which is characteristic of the non reactive patterns. Next we focused on a chemical reaction featuring more complex kinetics, namely the oscillating Belousov-Zhabotinsky reaction. The reactants were initially segregated in space in order to spatially localize the reaction at the interface between two solutions with different composition. Our aim is to obtain a localized chemical oscillator and to study its effect on buoyancy-driven flows. To do so, we first characterized the corresponding reaction-diffusion patterns which develop from this particular initial condition. We showed that, in the absence of convection, the spatial segregation of the reactants produces spatial gradients in the excitability and hence the nucleation of one or two spatially localized wave trains. We observed that in the presence of convective motions, these wave trains can also appear and remain localized, according to the type of buoyancy-driven instability which is at play. Moreover the chemical reaction triggers the onset of additional patterns. We have also characterized the hydrodynamic patterns which appear due to cross-diffusion in microemulsions. We have shown that, if a concentration gradient of one species is able to trigger a flux of another species, an unstable density stratification may appear and cause the onset of convection. Finally we have studied the convective dissolution of an organic phase (alkyl formate) into an aqueous phase. We have shown that, above a certain threshold, an increase in the miscibility between the two phases leads to an increase in the intensity of the fluid motions. Our results help to understand the effect of bimolecular or oscillating reactions, dissolution processes and cross-diffusion on the properties of reaction-diffusion-convection structures. This work paves the way towards the study of novel self-organized spatio-temporal patterns coupling the organizing power of chemical reactions and of hydrodynamic flows, both in aqueous solutions and multiphase media.
Doctorat en Sciences
info:eu-repo/semantics/nonPublished
Bouché, Karine. "Etude thermocinétique de la dissolution de métaux solides (fer et nickel) dans l'aluminium liquide." Aix-Marseille 1, 1995. http://www.theses.fr/1995AIX11051.
Full textDeleuze, Marc. "Dissolution contrôlée du quartz en milieu basique. Application à la mise en fréquence de résonateurs piézoélectriques." Montpellier 2, 1994. http://www.theses.fr/1994MON20107.
Full textMuzeau, Benoist. "Mécanismes d’altération sous eau du combustible irradié de type UOX." Paris 11, 2007. http://www.theses.fr/2007PA112101.
Full textThe mechanisms of underwater alteration of spent fuels need to be understood on the assumption of a direct disposal of the assemblies in a geological formation or for long duration storage in pool. This work is a contribution to the study of the effects of the alpha and/or beta/gamma radiolysis of water on the oxidation and the dissolution of the UO2 matrix of UOX spent fuel. The effects of the alpha radiolysis, predominant in geological disposal conditions, were quantified using samples of UO2 doped with plutonium. The leaching experiments highlighted two types of control for the matrix alteration according to the alpha activity. The first is based on the radiolytic oxidation of the surface and leads to a continuous release of uranium in solution whereas the second is based on a control by the solubility of uranium. An activity threshold, located between 18 MBq/g and 33 MBq/g, was defined in a carbonated water. The value of this threshold is dependent on the experimental conditions and the presence or not of electro-active species such as hydrogen in the system. The effects of the alpha/beta/gamma radiolysis in relation with the storage conditions were also quantified. The experimental data obtained on spent fuel indicate that the alteration rate of the matrix based on the behaviour of tracer elements (caesium and strontium) reached a maximum value of some mg/m. J, even under very oxidizing conditions. The solubility of uranium and the nature of the secondary phases depend however on the extent of the oxidizing conditions
Books on the topic "Dissolution (Chimie)"
Datta, Madhav. Electrodissolution Processes: Fundamentals and Applications. Taylor & Francis Group, 2020.
Find full textDatta, Madhav. Electrodissolution Processes: Fundamentals and Applications. Taylor & Francis Group, 2020.
Find full textDatta, Madhav. Electrodissolution Processes. Taylor & Francis Group, 2020.
Find full textElectrodissolution Processes: Fundamentals and Applications. Taylor & Francis Group, 2020.
Find full textElectrodissolution Processes: Fundamentals and Applications. Taylor & Francis Group, 2023.
Find full textBook chapters on the topic "Dissolution (Chimie)"
Sigg, Laura, Philippe Behra, and Werner Stumm. "7. Précipitation et dissolution ; activité des phases solides." In Chimie des milieux aquatiques, 183–215. Dunod, 2014. http://dx.doi.org/10.3917/dunod.sigg.2014.01.0183.
Full textEl Ibrahimi, Brahim, Lei Guo, Jéssica Verger Nardeli, and Rachid Oukhrib. "The Application of Chitosan-Based Compounds against Metallic Corrosion." In Chitin and Chitosan - Physicochemical Properties and Industrial Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96046.
Full textZuhairah Zainuddin, Siti, and Khuriah Abdul Hamid. "Chitosan-Based Oral Drug Delivery System for Peptide, Protein and Vaccine Delivery." In Chitin and Chitosan - Physicochemical Properties and Industrial Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95771.
Full textBejaoui, Marouene, Hanen Oueslati, and Haykel Galai. "Ternary Solid Dispersion Strategy for Solubility Enhancement of Poorly Soluble Drugs by Co-Milling Technique." In Chitin and Chitosan - Physicochemical Properties and Industrial Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95518.
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