Letteratura scientifica selezionata sul tema "Molécules – Séparation – Modèles mathématiques"
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Articoli di riviste sul tema "Molécules – Séparation – Modèles mathématiques":
Marano, Francelyne. "Les méthodes alternatives à l’expérimentation animale, présent et futur". Biologie Aujourd’hui 217, n. 3-4 (2023): 199–205. http://dx.doi.org/10.1051/jbio/2023035.
Nabeneza, Serge, Vincent Porphyre e Fabrice Davrieux. "Caractérisation des miels de l’océan Indien par spectrométrie proche infrarouge : étude de faisabilité". Revue d’élevage et de médecine vétérinaire des pays tropicaux 67, n. 3 (27 giugno 2015): 130. http://dx.doi.org/10.19182/remvt.10181.
Tesi sul tema "Molécules – Séparation – Modèles mathématiques":
Martinez, Triana Alvaro. "Transmembrane distillation for recovery of industrial aqueous effluents". Electronic Thesis or Diss., Université de Lorraine, 2023. https://docnum.univ-lorraine.fr/ulprive/DDOC_T_2023_0140_MARTINEZ_TRIANA.pdf.
The major subject of this research is the conceptual study of a transmembrane distillation process for the recovery of industrial effluents. The scientific issues studied in this work are covered by advanced separation processes: Materials: dense or porous polymers, experimental quantification at laboratory scale of the mass transfer mechanism, modelling of mass and heat coupled transfers, process simulation and optimization. In this thesis, the technological issues are addressed by a process simulation approach. A numerical unit operation brick for membrane technology simuation is proposed. It considers the physical and chemical phenomena at three levels: material, module (geometry, flow patterns) and process (operating conditions). The generic mathematical model presented in this work is adapted to three systems of industrial interest: water desalination (non-volatile component), boron-containing effluent treatment (component less volatile than water) and ammonia recovery (component more volatile than water). The adaptation of the mathematical model is based on experimental data found in the literature and complemented by experiments performed on laboratory-scale equipment. These experiments target the comprehension of the two main phenomena necessary for the calculation of the process selectivity: the modelling of the liquid-vapour equilibrium and the evaluation of the transfer coefficients for each component at the material level. This dedicated code, modified with the experimental results, is then integrated into a process simulation software, allowing architecture optimization, process synthesis and optimization. Industrial issues are evaluated by comparing traditionally deployed technologies (thermal-based technologies) with membrane technologies based on the evaluation of energy and production performances. Finally, the results allow the identification of the transmembrane distillation potential for the selective separation of components as alternative processes to existing technologies
Perfilov, Viacheslav. "Modèles mathématiques des procédés de séparation membranaire". Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTG037/document.
In this work have been developed general predictive models for direct contact membrane distillation (DCMD) and sweeping gas membrane distillation (SGMD) as well as a hydrodynamic model for anaerobic membrane bioreactors (AnMBRs) equipped with the induced membrane vibration (MMV) system. The DCMD and SGMD models allow simulating hollow fibre and flat sheet configurations under wide range of process conditions without empirical mass and heat transfer coefficients or laboratory experiments. The models have been validated with experimental and literature data. Indeed, the influence of operating conditions and membrane geometric characteristics on the process performance has been investigated. The model for AnMBRs with MMV studies the effect of the membrane vibration on the hydrodynamics of the AnMBR tank. The parametric study allows knowing, the effects of the vibration frequency and amplitude on the fluid velocity and volume fraction of solids. The conducted studies prove that all the proposed models would be potentially applied for the pre-experimental study, optimization of process conditions, design of membrane modules as well as for the further cost estimation of the processes
Treboux, Gabin Anselme. "Elaboration d'algorithmes couplant mécanique moléculaire et traitements quantiques : Vers l'étude des systèmes conjugués étendus : [thèse en partie soutenue sur un ensemble de travaux]". Toulouse 3, 1994. http://www.theses.fr/1994TOU30111.
Lecante, Pierre. "Modélisation de l'ordre local dans des solides amorphes : approche multi-méthodes par diffusion et spectroscopie d'absorption des rayons X, conception d'un logiciel de modélisation moléculaire, application en chimie inorganique et de coordination". Toulouse 3, 1990. http://www.theses.fr/1990TOU30179.
Legsai-Talmi, Ghizlane. "Calcul de géométries et d'énergies moléculaires par mécanique moléculaire : programmes satellites du programme EMO, volume moléculaire, paramétrisation des métaux". Aix-Marseille 3, 1995. http://www.theses.fr/1995AIX30027.
Guifo, Fodjo A. Yvan. "Séparation des préoccupations dans les modèles compartimentaux étendus". Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS262.
Mathematical modeling and computer simulation have very often contributed to improving our understanding, prediction, and decision making in the face of epidemics. However, a problem that is often encountered in the development and implementation of epidemiological models is the mixing of different aspects of the model. Indeed, epidemiological models become more and more complex as new concerns are taken into account (age, gender, spatial heterogeneity, containment or vaccination policies, etc.). These aspects, which are usually intertwined, make models difficult to extend, modify or reuse. In mathematical modeling applied to epidemiology, two main approaches are considered. The first one, the "compartmental models", has proven to be robust and provides fairly good results for many diseases. However, it does not take into account some sources of heterogeneity. The second approach, based on "contact networks", has proven to be intuitive to represent contacts between individuals and brings very good results concerning the prediction of epidemics. However, this approach requires more effort during the implementation. A solution to this problem has been proposed: Kendrick. It is a modeling and simulation tool and approach that has shown promising results in separating epidemiological concerns, by defining them as stochastic automata (continuous time markov chain), which can then be combined using an associative and pseudo commutative tensor sum operator. However, a significant limitation of this approach is its restricted application to compartmental models. Taking into account the particularities and shortcomings of each approach, in this research work, we propose a combined approach between compartmental models and contact network models. The aim is to generalize the Kendrick approach to take into account certain aspects of contact networks in order to improve the predictive quality of models with significant heterogeneity in the structure of the contacts, while maintaining the simplicity of compartmental models. To achieve this, this extension of compartmental models is made possible by applying the infection force formalism of Bansal et al (2007) and the behavioral Template Method Design Pattern. The result is an approach that is easy to define, analyze and simulate. We validated this approach on different techniques to generalize compartmental models. Simulation results showed that our approach succeeds in capturing the aspects of contact network models within the compartmental framework while improving the prediction quality of the Kendrick tool and does not deviate from a typical simulation approach on a contact network model
Bui, Thi-Mai-Anh. "Séparation des préoccupations en épidémiologie". Electronic Thesis or Diss., Paris 6, 2016. http://www.theses.fr/2016PA066457.
Mathematical and computational models have become widely used and demanded tools for examining mechanisms of transmission, exploring characteristics of epidemics, predicting future courses of an outbreak and evaluating strategies to find a best control-program. One of the problems of modelling is bridging the gap between conceptual models (i.e compartmental models of epidemiology) and their computer simulation (through deterministic, stochastic or agent-based implementation). Domain Specific Languages (DSLs) are often used to address such difficulties by separating two concerns of modelling, specification (conceptual model) and implementation (computational model). In this perspective, we develop a DSL called KENDRICK targeted to the epidemiological modelling and coupled with a simulation platform that allows the study of such models. The other important issue needs to be addressed in the context of epidemiological modelling is the heterogeneities introduced by separate concerns. In order to facilitate the specification of models and their evolution, it is crucial to be able to define concerns with as few dependencies with each other as possible and to combine them as freely as possible. We address such challenges by proposing a common mathematical meta-model that supports both concerns and models and enabling their compositions by some operators. We then implement our proposal language KENDRICK based on this meta-model. The language simplifies the construction of complex epidemiological models by decomposing them into modular concerns, by which common concerns can be reused across models and can be easily changed
Dutriez, Thomas. "Chromatographie multidimensionnelle : vers une caractérisation moléculaire étendue des charges type distillat sous vide et la compréhension de leur réactivité à l'hydrotraitement". Paris 6, 2010. http://www.theses.fr/2010PA066411.
Chaudret, Robin. "Compréhension et modélisation multi-échelle du comportement des cations métalliques dans des milieux complexes : des méthodes interprétatives aux champs de forces polarisables". Paris 6, 2011. http://www.theses.fr/2011PA066126.
Chiodi, Olivier. "Etude de la réduction énantiosélective des cétones par le borane catalysée par des composés organosphorés dérivés d'oxazaphospholidines chiraux". Aix-Marseille 3, 1997. http://www.theses.fr/1997AIX30018.
Libri sul tema "Molécules – Séparation – Modèles mathématiques":
Khoury, Fouad M. Multistage separation processes. 3a ed. Boca Raton: CRC Press, 2005.
Khoury, Fouad M. Multistage Separation Processes. Taylor & Francis Group, 2014.
Khoury, Fouad M. Multistage Separation Processes. Taylor & Francis Group, 2014.