Tesi sul tema "Génie des produits formulés"
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Ramos, Diego. "Contrôle et caractérisation des propriétés d'émulsions de Pickering stabilisées avec des particules de silice à partir d'une approche type génie des produits formulés". Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0204.
The chemical product design approach tries to understand and control the link between the micro-, meso- and macroscopic properties of a finished product. In this approach, the understanding of the global behavior of the product requires the characterization of its three constitutive scales, in order to control its end-use properties and to be able to fulfill a specification, which is generally imposed. This approach is adapted to the study of non-equilibrium and multi-component systems. Pickering emulsions, or particle-stabilized emulsions, are a rich experimental field to apply this approach. In this thesis, we worked with commercial silica particles to stabilize the emulsions. The size and wettability of the particles were characterized. The nature of the emulsions could be direct reverse water-in-oil or direct oil-in-water. In addition, we tested three different stirrers: Rushton turbine, rotor-stator and ultrasonic probe to prepare them. Systematic characterizations of the emulsions concerned the average drop size, the rheological behavior and partitionning of the silica particles between the liquid/liquid interfaces and the continuous phase. We found that the composition-process coupling allowed to control these properties. In a first step, we focused on reverse and direct emulsions prepared with the same emulsification process. In a second step, we proposed a systematic study of direct emulsions prepared mainly with two emulsification processes. And in a third time, we tried to push the limits of the dispersed phase fraction of these emulsions as well as a modeling of their rheological behavior
Wikarsa, Saleh. "Génie des produits formules : amélioration des spécifications de l'Ibuprofène, principe actif peu hydrosoluble, par le procédé d'atomisation". Montpellier 1, 2008. http://www.theses.fr/2008MON13505.
El, Boury Alami Soumia. "Détermination par méthode in vitro de l'efficacité de produits solaires formulés avec des filtres inorganiques et/ou organiques". Nantes, 2011. https://archive.bu.univ-nantes.fr/pollux/show/show?id=4301f698-ec02-41e5-91c2-4e470b44b1d0.
Following the work initiated in the Laboratory of industrial Pharmacy and Cosmetology, we tried to increase our knowledge on the efficacy of different filters organic and inorganic used in suncare products. First of all we studied the efficacy of the filters in the UVA range. Depending on the molecules used we observed a range of results in terms of efficacy. The less efficient is the benzophenone¬3. The best UVA filter which has a wide spectrum is the anisotriazine. In terms of photostability, we will distinguish 2 categories of sun filters: the ones which are loosing more than 10% of their efficacy after 2 hours irradiation (it is the case for the majority of the filters studied) and the ones which are stable even if after 2 hours irradiation. This last category groups the benzophenone 3 and 5, the triazine sold under the name Tinosorb® S and the bismidazylate. The pros of those sun filters, which are efficient or not depending on the molecule, is their photostabilty. In fact, they will be the first choice to formulate sunscreens with. Knowing that a suncare product is a combination of different filters organic and inorganic, we decided to test their association against the photoprotection obtained. Associations between organic and inorganic filters, such as titanium dioxide or zinc oxide, have been done. The best synergy is obtained when organic sun filters are combined with zinc oxide. Regarding those results, zinc oxide is easier to combine than titanium dioxide with other filters. However, the combinations with titanium dioxide result in higher photoprotection. The best combination is with the anisotriazine, as the SPF obtained is higher than 50
Yang, Shan. "Évaluation de la performance des produits déverglaçants pour pistes et voies d'accès d'aéroport". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0007/MQ43293.pdf.
Mendes, Siqueira Anna Luiza. "Apport de la spectrométrie de mobilité ionique couplée à la spectrométrie de masse pour la caractérisation de produits pétroliers formulés". Thesis, Normandie, 2018. http://www.theses.fr/2018NORMR044.
Nowadays, formulated petroleum products such as fuels and lubricants must respond toprecise technical requirements to ensure the best performance, reliability and longevity ofengines while limiting the emission of pollutants. This thesis work focused on the development of analytical methodologies for the identification of polymeric additives in diesel fuels and the characterization of polyalphaolefins. The additive analysis was performed by coupling of liquid chromatography, ion mobility spectrometry and mass spectrometry (LC-IMS-MS), the ionization was performed by electrospray (ESI). After adjusting the experimental parameters, all additives were identified in the diesel fuel without sample preparation. The coupling of liquid chromatography at the critical condition chromatography (LCCC) with mass spectrometry was also evaluated in order to improve the separation of additives from the diesel fuel matrix. The characterization of polyalphaolefins (PAO) was carried out by IMS-MS with ASAP (atmospheric solids analysis probe) or APPI (atmospheric pressure photoionization) sources. With ASAP, in addition to pyrolysis ions, intact species were detected for low PAO grades. In the case of high PAO grades, only pyrolytic fragments were detected, yet it was possible to identify the alphaolefins used to produce the PAOs. In APPI, the use of halogenated solvents and toluene, allowed to observe intact species for high PAO grades through the formation of halogenated adducts. With IMS-MS coupling polyalphaolefins were differentiated the by the study of drift times and full width at half maximum
Sabin, Yannick. "Développement d'une méthodologie pour l'optimisation de procédés de copolymérisation en émulsion à partir des caractéristiques désirées pour les produits formulés résultants". Vandoeuvre-les-Nancy, INPL, 2004. http://www.theses.fr/2004INPL102N.
The aim of this study is to develop a methodology in order to optimize the pararneters of an emulsion polymerization process, so as to synthesize latexes with defined properties. The properties that are to be determined are those of the particles (composition, morphology), and those of the film Formed using the latex (Young's modulus, composition, topology, minimum film formation temperature). The main application field of the latexes concerns paints. Consequently, the web scrub resistance of the paints is a determining property. Firstly, a literature study is carriecl out about the principles of the emulsion polymerization, and the film formation. Besicles, the control of the particle morphology is developed. The latexes that are studied will be used to enter in the formulation of paints. Therefore, the composition of the paints and the main properties of the paint films are explained. After presenting the experimental techniques that are used in this study, a new experimental methodology is developed. It aims at understanding the influence of the physical and chemical properties of the latex particles on the application properties of the latex. The experimental strategy consists fïrstly in determining the particle characteristics that control the latex properties when used as films or formulatecl in paints. Afterwards, an experimental strategy is designed for the elaboration of latexes having different properties. The concepts of D-optimality and rotatability are used so as to realise this design. The following step of this experimental strategy is to define the process parameters (temperature, feecl composition and feed flow rates) that have to be applied in order to synthesize each latex. In that purpose, a software has been completed with a kinetic model of the process and a optimization algorithm (evolutionary algorithm). Besicles, a procedure has been defined and validatecl with experiments. In thiswork, the tools used to delevelop the experimental methodology are defined and set. Then, the strategy of experiments is applied to latexes composed with core / shell particles. The analysis of the properties of the latexes allowed to defined the optimal physical and chemical characteristics of the latexes and, finally, the operating experimental conditions to obtain them. The latexes were formulated in paints, and the physical properties of the paints were linked to the characteristics of the latex particles
El, Hadj Khalef Redouane. "Définition des nomenclatures et des sources d'approvisionnement pour la fabrication d'une famille de produits". Grenoble INPG, 2009. http://www.theses.fr/2009INPG0089.
Ln a context of product family design, industrials are led to design and manufacture a large variety of products to answer different customer's needs and specifie constraints linked to the supply chain. Modular design is a strategy that allows to generate various bills of mate rials of products from a limited set of modules. As weil as the definition of the bills of materials, the choice of production sites for each module is also necessary. Often, the adopted strategies are extreme, and propose a production-for¬stock to anticipate customer's needs or a production-to-order to minimize the storage costs. The objective of this thesis is to study an intermediate strategy said "assembly to order" allowing to balance between the storage costs and the manufacturing delays
Ziadi, Tewfik. "Manipulation de lignes de produits en UML". Rennes 1, 2004. http://www.theses.fr/2004REN10152.
Fall, Ibrahima. "Gestion optimisée de produits-modèles de procédés logiciels". Paris 6, 2012. http://www.theses.fr/2012PA066018.
Currently, software process artefacts are under-considered by the software process modelling and execution community. They are minimally managed. Moreover, the application of the principles of the model driven engineering on software processes have deeply changed the nature and increased the complexity of software artefacts : they become models (model-products hereafter). Taking into account such a complexity is a necessity with a view to optimize model-products management policies. This thesis has focused on the issue of the specification of the relationships between model-products by analysing the importance of the use of those relationships in model-products evolution management during process execution. We therefore have illustrated that using the respective specifications of relationships during process execution optimizes the management of model-products evolution in term of their consistency, their synchronization, and a flexibility in their granularity. Our solution fits in two major points that respectively relate to process modelling and enactment. According to process modelling, we have proposed a meta-model that captures the concepts to use to specify the model-products and the relationships between them. The meta-model takes also into account the details on these relationships as they are useful for an enhancement of used model-products management policies during the execution of the modelled processes. Our approach currently supports the nest and the overlap relationships. According to the process execution point of view, in order to structure the logical entities through which are managed the model-products of a process, we have proposed another meta-model. Such a meta-model therefore specifies process objects that represent model-products and their relationships during process execution. This meta-model also supports the nest and the overlap relationships, in compliance with the first one. The proposition also comprises transformation rules used to map concepts of the two meta-models and therefore to give the possibility of an automatic use of the modelling concepts through the enactment ones. The contributions of the approach are related to model-products management during process enactment. They essentially consist of a systematic synchronization and relational consistency between model-products, their aided creation, a flexibility in the granularity of their use, and their semantic integrity. We finally have prototyped a process modelling and enactment environment that implements our approach
Vincent, Jean-Paul. "Modèles et outils d’analyse des variabilités en phase de conception de produits à denture". Paris, ENSAM, 2010. http://www.theses.fr/2010ENAM0011.
With the improvement in technology and tightening of performance requirements, the cost and the required precision of assemblies increase as well. There is a strong need for increased attention to tolerance design in order to decrease the uncertainties of tolerancing decisions which can profoundly impact the quality and cost of a gear. Therefore, the objective of this PhD research is the management of geometrical variations and uncertainties focusing on specification models. This research concerning the tolerance analysis was motivated to incorporate and increase the flexibility of the approaches to support different representations of specification models. Also, the uncertainties were reduced by characterizing and proposing specification models. Concerning tolerance analysis, two meshing behavior formulations, two geometrical models (discrete or parametric) and several numerical methods have been proposed and tested. They allow analysis of vectorial tolerance, tolerance by zone, or hybrid formulation, using Monte Carlo Simulation. Concerning the uncertainties, correlation uncertainty formalization has been proposed. It isbased on the Axiomatic Design approach, by defining this uncertainty as a confidence interval of the sensibility matrix coefficients. Thus, several specification models have been characterized regarding these uncertainties (correlation uncertainties) and measurement uncertainties to have a global view of uncertainties which affect the conformity decision
Lefebvre-Josien, Delphine. "Synthèses totales de deux cyanoglucosides : la bauhinine et le lithospermosid". Mulhouse, 2001. http://www.theses.fr/2001MULH0665.
The total synthèses of two naturally occurring non-cyanogenic cyanoglucosides have been achieved from the optically pure oxanorbomenone: Bauhinin was prepared in 12 steps and a 8% global yield, Lithospermoside in 13 steps and 9% yield. The glycosidation key-step was studied on several aglycones bearing différent acid-sensitive groups. This step was carried out by a modification of the Koenigs-Knorr procédure using bromotetraisobutyrylglucose as donor, silver triflate as promoter and an hindered pyridine as base which, afforded the desired beta-glucosides with very good yields (50%-70%). The aglycones required for the total synthèses were prepared by the stereoselective introduction of protected hydroxyle on the oxanorbomenone skeleton, followed by cyanomethylation via a Wittig-Horner reaction and by the base-induced opening of the oxa bridge. After the glycosidation, the synthèses were finished by deprotection and photoisomerization steps
Dagnas, Stéphane. "Développement d'une méthode de quantification du risque d'altération de produits alimentaires par les moisissures. Applications aux produits de Boulangerie, Viennoiserie, Pâtisserie". Nantes, 2015. https://doc-agro.oniris-nantes.fr/GED_ONI/192147991032/Manuscrit_these_Dagnas_finale_version_protegee.pdf.
Bakery products represent a six billion euro market in France and a 40 billion euro market in Europe. With great volumes manufactured, these products do not avoid the current food waste phenomenon of which a significant part comes from mold spoilage. In order to quantify this spoilage and tackle it, this PhD work aimed at developing a method to assess mold spoilage risk of bakery products
Mougenot, Céline. "Modélisation de la phase d’exploration du processus de conception de produits, pour une créativité augmentée". Paris, ENSAM, 2008. http://www.theses.fr/2008ENAM0042.
Research in design science aims at providing design practitioners with methodologies and tools to leverage innovation and creativity. In this context, our research ends up with a model of informational activities by designers in early phases of design process; so far, the early phase of design process has not been much investigated, mainly because designers’ cognitive operations, hidden and not easily described, are largely involved in this phase. A long-term experimental protocol was carried out with professional designers, involving questionnaires, interviews and design tasks simulation. As an output, designers’ information and image-gathering strategies in exploration steps were depicted, showing that images are the main support of design thinking. Imagery impact on design creativity was then evaluated; more specifically, we investigated the impact of images collected within several sectors of influence (e. G. Architecture, fashion) and it was demonstrated that distance between the image source and the design target is a major factor of variation of design-solution creativity. The findings enabled to propose development specifications for a creativity-oriented image-retrieval software. Our research was carried out within a three-year project funded by the European Union (TRENDS: STREP IST-27916) and was validated by the production of a software aimed at supporting designers’ inspirational and creative activities, developed with the participation of car designers and tested by them
Delinière, Rémi. "Valorisation de sous-produits calcaires issus de soudières dans les matériaux de génie civil". Toulouse 3, 2016. http://www.theses.fr/2016TOU30272.
Laterreur, Véronique. "Développement d'outils pour le conditionnement mécanique de substituts valvulaires et vasculaires produits par génie tissulaire". Doctoral thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/26561.
Tissue engineering offers promising solutions to problems related to repair and replacement of tissues of the human body, especially those of the cardiovascular system. One of the preferred approaches consists in using cell culture to reproduce the structure, the properties and the functionalities of the tissue to be repaired or replaced. Dynamic culture in an environment reproducing, in the case of cardiovascular system substitutes, blood flow and pressure conditions imposed on these tissues in the body, has demonstrated a great potential for the properties and functionalities of the substitutes to evolve into those of the native tissues they are destined to repair or replace. The objectives of this thesis have therefore been oriented towards the development of different tools related to the mechanical conditioning of aortic valve and artery substitutes through dynamic culture. A bioreactor allowing reproduction of the blood flow and pressure conditions at the entrance of the systemic circulation in the human body with an unprecedented quality was first developed, in order to perform mechanical conditioning on aortic valve substitutes produced by auto-assembly. Tools leading to the establishment of rigorous protocols for the evaluation of the effect of mechanical conditioning on the circumferential mechanical properties of vascular substitutes were then designed and commissioned. Finally, these different tools of mechanical conditioning and evaluation were used to initiate the development of a mechanical conditioning protocol which would modulate the mechanical properties and accelerate the maturation process of vascular substitutes produced by auto-assembly.
Poux, Martine. "Génie des procédés appliqué à l'électrophorèse : études numérique et expérimentale d'une cellule de focalisation isoélectrique". Toulouse, INPT, 1989. http://www.theses.fr/1989INPT029G.
Istoan, Paul. "Méthodologie pour la dérivation comportementale de produits dans une ligne de produit logicielle". Phd thesis, Université Rennes 1, 2013. http://tel.archives-ouvertes.fr/tel-00926141.
Ybanez, Christel. "Etude chimique et physico-chimique de nouveaux composés d'entretien à usage de dégraissant multifonction". Aix-Marseille 3, 2001. http://www.theses.fr/2001AIX30056.
A product's formulation which matches with the market's needs is of vital importance for every company. Each company must estimate the customers' requirements, whether they are explicit or implicit. Moreover, the quality of a product is a decisive factor a company should consider in order to choose a formula. This survey is structured on three parts. The first part contains the setting of formulas' compliance with regulations. It considers the way some active ingredients have been replaced because of their classification as toxic. The second part sets up the improvement of formulas. The different trials concern existing products for which it was interesting to improve their active power or formulation's storage stability. The third part presents the substitution of methylene chloride in scouring formulations for paints. The use of this substance is prohibited in some European countries and the author studies the possibility to replace it so that the company may anticipate the regulations applicable in France. The trials have been performed on aqueous products and solvent bases
Péron-Lührs, Frédérique. "Cytomégalovirus : exploration de gènes de régulation à l'aide d'anticorps polyclonaux et monoclonaux produits par génie génétique". Rennes 1, 2009. http://www.theses.fr/2009REN1S211.
The human Cytomegalovirus (CMV) (Herpesviridae), first cause of congenital infections, is responsible for serious pathologies in immunocompromised individuals. This study is about regulatory proteins of CMV and has required the construction of vectors which encode the regulatory genes UL33, UL69, UL37x1, UL37x3, US27, US28, UL36 and 3 glycoproteins. We have produced antibodies by injection of vectors into guinea-pigs and registered a patent concerning this new process. Its robustness was checked by producing monoclonal antibodies against these proteins and by developing antibodies against the Norovirus. With these new tools, the study of gpUL33, ppUL69 and vMIA has been carried out. The cells transfected by vMIA allow the human herpesvirus 6, known to grow only on primary lymphocytes, to replicate. A Soleau envelope was registered about the permissiveness of this cell lineage. The different aspects of this work are being exploited
Cheballah, Kamal. "Aides à la gestion des données techniques des produits industriels". Ecully, Ecole centrale de Lyon, 1992. http://www.theses.fr/1992ECDL0003.
Morissette, Amélie. "Production et greffe de substituts urétraux lagomorphes produits par la méthode d'auto-assemblage". Master's thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/27542.
Medyna, Galina. "Approche d'évaluation environnementale pour les premières étapes de la conception de produits". Phd thesis, Ecole Centrale Paris, 2013. http://tel.archives-ouvertes.fr/tel-00998449.
Morissette, Martin Pascal. "Évaluation de l'impact de pansements biologiques humains produits par génie tissulaire sur la guérison de plaies cutanées murines". Master's thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/26721.
Promotion of skin repair for acute or chronic wounds through the use of tissue-engineered products is an active field of research. This study evaluates the effects mediated by two types of tissue-engineered biological dressings containing human in vitro-differentiated adipocytes or adipose-derived stromal cells (ASCs). Re-epithelialization, granulation tissue formation and neovascularization of full-thickness cutaneous wounds were specifically assessed using a murine model featuring a fluorescent epidermis. In comparison to wounds that did not receive either type of biological dressings, treated wounds displayed significantly faster wound closure rates. Non-invasive imaging of GFP-expressing keratinocytes determined that wound closure was independent from re-epithelialization mechanisms, while histological assessments of the scar tissues showed thicker granulation tissues enriched in collagens and increased angiogenesis. Taken together, these results establish that engineered substitutes featuring adipocytes or ASCs can promote cutaneous healing when applied as temporary dressings, suggesting their relevance for chronic wound management studies.
Jiménez, Lara Ramon. "Pertes de masse lors du refroidissement des produits alimentaires". Paris 6, 1986. http://www.theses.fr/1986PA066641.
Bullon, Torrealba Johnny. "Membranes dynamiques obtenues par dépôt de protéines sur une céramique poreuse : génie des procédés d'élaboration et de séparation". Montpellier 2, 1998. http://www.theses.fr/1998MON20121.
Fajon, Marc. "Application du génie logiciel aux systèmes experts : problèmes posés et contributions". Toulouse, ENSAE, 1992. http://www.theses.fr/1992ESAE0010.
Nan, Hammade Vasilica. "Caractérisation et valorisation des déchets et sous-produits industriels dans le domaine du génie civil et en technique routière". Lille 1, 2000. https://pepite-depot.univ-lille.fr/RESTREINT/Th_Num/2000/50376-2000-9.pdf.
Nebut, Clémentine. "Génération automatique de tests à partir des exigences et application aux lignes de produits logicielles". Rennes 1, 2004. http://www.theses.fr/2004REN10099.
Bertrand, Lionel. "Influence d'un MHEC sur les propriétés physiques et mécaniques d'un enduit de rénovation de façade : étude de l'adhérence de l'enduit sur une pierre de Tuffeau". Lyon, INSA, 2004. http://www.theses.fr/2004ISAL0087.
Renovation renders are complex materials. They content many components: cement, lime, aggregates and organic admixtures. One of them, the water retentive, allows to retain the water inside the render when applied on a porous substrate. In this study, the retentive admixture is a cellulose ether (MHEC). Its mode of action and effects on render properties are not well known. The aim of this work is to measure and explain the MHEC influence on the render adhesion when applied on a limestone substrate (tuff). Therefore, we compared Iwo renders, with and without MHEC. However, the adjunction of MHEC demands an addition of water during the render mix to obtain similar render workability. The study of the render adhesion is done thanks to the Wedge Splitting Test. This test allows to control the crack propagation at the render/substrate interface and gives many information (load, stiffness, fracture energy). The characterization of mechanical (elastic modulus) and physical properties (length variations, setting kinetics) of renders completed by the study of water movements (suction, evaporation) helps to understand their adhesive behavior. Also, modifications due to MHEC addition were underlined, separately of the render water content. ESEM observations of the renders hydration and of the renders/substrate fracture surfaces allow to raise assumptions on the MHEC action mode
Yu, Jianqi. "Ligne de produits dynamique pour les applications à services". Phd thesis, Grenoble, 2010. http://www.theses.fr/2010GRENM034.
Application development by composition of dynamic and heterogeneous services, that is to say, implemented according to different technologies, is the main subject of this thesis. We believe, actually, that service-oriented approach brings considerable changes in software computing and can bring significant benefits in terms of cost reduction, quality improvement and compression of time-to-market. The service-based technologies have already penetrated in many industries sections and answered certain expectations they aroused. Application development by composing heterogeneous services is still very complex for several reasons. Firstly, the various existing technologies employ very different mechanisms for declaration, research and liaison. The services themselves are described following structures often different. Therefore, development and technical knowledge are necessary to correctly combine services using different technological bases. On the other hand, dynamism management is complex. The principle of the service-oriented approach is to allow late service binding and, in some cases, the change of bindings according to context evolution. This requires very precise synchronization algorithms and is difficult to develop and test. We are well aware that in many cases, the benefits of service-oriented approach are not fully achieved, lacking of appropriate dynamism management. Finally, services are essentially described using a logical syntax. Therefore, we cannot guarantee, in a general case, the compatibility of several services or, more simply, the correctness of their global behavior. This is even more difficult when services have complex interactions, not restricted to a single call to obtain information. In this thesis, we bring a domain-specific dimension into service composition. The domain definition allows restricting the possible compositions of services, both at technical and semantic level. Thus we have found great complementarities between software product lines approaches and service-oriented approaches. Dynamism is a natural characteristic of service-based technologies, that is to say, the ability to bind services as late as possible utile runtime. Software product-lines, in turn, define approaches for planned reuse. Specifically, this thesis provides a three-phase approach for development of service composition with tool support, namely: the definition of a domain in the form of services and reference architectures, the definition of application in the form of service-based architectures and the execution of autonomic applications following application architecture. This thesis is validated in a collaborative project in the home healthcare domain
Yu, Jianqi. "Ligne de produits dynamique pour les applications à services". Phd thesis, Grenoble, 2010. http://tel.archives-ouvertes.fr/tel-00493355.
Lecocq, Eva. "Caractérisation et mise en œuvre de systèmes réactifs polyamide et polyépoxyde formulés pour le rotomoulage de liners de stockage hyperbare". Phd thesis, INSA de Lyon, 2012. http://tel.archives-ouvertes.fr/tel-01015615.
Tassart, Annabella. "Valorisation en génie civil de scories L. D. Et de résidus calciques issus des centrales thermiques équipées de système de désulfuration". Artois, 1998. http://www.theses.fr/1998ARTO0204.
Dion-Fortier, Annick. "Variation des sous-produits de la désinfection de l'eau potable au point d'utilisation résidentiel". Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25890/25890.pdf.
Guérin, Didier. "Préparations cosmétiques et mise au point d'une coloration d'oxydation sous forme de gel sans ammoniaque". Aix-Marseille 3, 2000. http://www.theses.fr/2000AIX30076.
The interest of these cosmetic formulations is to create a gel forming oxidation hair dyes without ammonia. First, we have study the physiology and anatomy of hair, and cosmetic raw materials, to formulate cosmetic preparations for permanent or semi-permanent waves shampoo and other hair cares. Second, we have studied existing colorations direct or permanent, to learn the technical way to prepare hair dying products, and the interactions between the intermediates. We have formulate a liquid base witch can be a gel form in presence of an hydrogen peroxide solution (6%). A least, we try to substitute ammonia by another alkalising agent in this type of colouring products, decreasing the toxicological impact
Rondon, Anton Miguel. "Influence de la formulation physico-chimique et des propriétés interfaciales sur la stabilité des émulsions asphaltènes-eau-huile : application à la deshydratation du pétrole". Pau, 2006. http://www.theses.fr/2006PAUU3021.
Water is undesirable in crude oil, for several reasons. It is thus necessary to separate it. Among existing separation methods, the so-called “chemical” way is known to be the most efficient one, but it is very specific and relatively expensive, and its action mechanism is not well understood yet. It was demonstrated that the best separation is attained when the interfacial HLB, resulting from the mixing of the HLBs of adsorbed asphaltene and demulsifier molecules, reaches an optimal value corresponding to the exact compensation between the lipophilic and the hydrophilic contributions. It was demonstrated that there is one surfactant in each family, which, at its optimal concentration, results in the quickest separation, as the best compromise between kinetics and thermodynamic phenomena. It was also shown that log-log plots of demulsifier versus asphaltene concentrations have the same topological configuration, whatever the demulsifier and the oil phase natures. Their topology depends on the different formulation variables, e. G. , demulsifier HLB, oil phase polarity, and probably upon salinity of water, temperature, alcohol type and concentration, etc. . . Finally, by using interfacial rheology and dynamic tensiometry, the effect of physicochemical variables was studied and compared with emulsion stability data. Based on thermodynamic arguments, it was demonstrated that interfacial demixing phenomena, are likely to explain the low stability of emulsions at optimum formulation
Paradis, François. "Influence de la fissuration du béton sur la corrosion des armatures : caractérisation des produits de corrosion formés dans le béton". Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26061/26061.pdf.
The work conducted in this thesis concerns reinforced steel corrosion, which is one of the most important problems affecting the durability of reinforced concrete structures. The principal objective of the thesis is to understand the influence of concrete cracking on corrosion initiation and propagation. This thesis presents experimental work where all tests are done in order to better represent real exposure conditions. Concrete samples are submitted to wetting (saline solution) and drying cycles. The evolution of corrosion of the reinforcement is followed using non-destructives electrochemical techniques. The nature and distribution of the corrosion products formed in concrete are analyzed at different level of corrosion. Since researchers often use accelerated techniques to initiate corrosion, a supplemental test campaign have been done in order to evaluate the reliability of these accelerated techniques. The results show some important differences on the nature and distribution of corrosion products. Subsequently, an experimental protocol representing natural exposure conditions has been set up in order to generate reinforced steel corrosion in mortar. A precise methodology for analyzing the nature and the distribution of corrosion products has also been followed. A first evaluation of corrosion initiation and propagation has been done on uncracked mortars. The results show that the chemical environment and the porosity of concrete have significant influence on the nature and the distribution of corrosion products. Artificially cracked specimens were also prepared to understand the influence of cracks on corrosion initiation and propagation. Results show that the presence of a crack increases the probability of corrosion initiation. The magnetite is the main oxide formed at the steel / concrete interface. Following wetting and drying cycles, the magnetite changes in goethite and akaganeite. Results from loaded and multi-cracked specimen show that cyclic loading also have some effect on corrosion kinetic. This influence seems to be related to the deterioration of steel / concrete interface, which further promotes corrosion propagation and also modify the nature and distribution of corrosion products.
Darquennes, Aveline. "Comportement au jeune âge de bétons formulés à base de ciment au laitier de haut-fourneau en condition de déformations libre et restreinte". Doctoral thesis, Universite Libre de Bruxelles, 2009. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210239.
1. Lors du suivi du retrait restreint à l’aide de l’essai à l’anneau en condition de dessiccation, le béton formulé à base de ciment au laitier de haut-fourneau a fissuré bien avant le béton formulé à base de ciment Portland.
2. Le retrait total en condition libre du béton formulé à base de ciment au laitier de haut-fourneau est nettement supérieur à celui du béton formulé à base de ciment Portland. Cette différence de comportement est principalement due à l’accroissement rapide et plus élevé du retrait endogène des bétons formulés à base de ciment au laitier de haut-fourneau.
Au vu de ces résultats expérimentaux, il a semblé intéressant de déterminer quel était l’impact de la déformation endogène des bétons formulés à base de ciments au laitier de haut-fourneau (CEM III) sur leur sensibilité à la fissuration. Afin de répondre à cette question, les déformations différées (retrait endogène, fluage propre en compression et en traction) au jeune âge de trois compositions de béton avec différentes teneurs en laitier (0, 42 et 71%) ont été étudiées expérimentalement en conditions libre et restreinte. Cependant, le suivi du retrait endogène libre et restreint a nécessité le développement de plusieurs dispositifs expérimentaux limitant au maximum les artefacts de mesure, tels que la TSTM (Temperature Stress Testing Machine). De plus, l’interprétation de ces résultats expérimentaux a également nécessité une caractérisation du comportement de ces matériaux à l’échelle macro- et microscopique.
Finalement, cette étude a montré que malgré une déformation endogène plus élevée, les bétons formulés à base de ciment au laitier de haut-fourneau fissurent après le béton formulé à base de ciment Portland. Ce comportement est dû à :
-l’impact du laitier sur la réaction d’hydratation du matériau cimentaire ;
-la présence d’une expansion de la matrice cimentaire des bétons formulés à base de ciment au laitier de haut-fourneau au jeune âge qui retarde l’apparition des contraintes de traction au sein du matériau ;
-la plus grande capacité de ces matériaux cimentaires à relaxer les contraintes de traction/
Today, the use of concretes with mineral additions (fly ash, slag) for civil engineering structures is spreading worldwide. Indeed, the production of blended cements is more respectful of the environment than the production of Portland cement, because it allows reducing greenhouse gas emissions and using industrial wastes. Slag cement concretes are also largely used for their good resistance to alkali-silica reactions, sulphate attacks and chloride diffusion. However, some of constructions built with slag cement concretes have exhibited cracking at early age due to their restrained deformations, such as thermal, autogenous and drying shrinkage. Following these observations, a preliminary experimental study was realized in the laboratory of BATir Department at ULB. It revealed several characteristics of the behaviour of slag cement concretes:
1. The study of restrained deformations under drying conditions by means of ring tests showed that the slag cement concretes seem more prone to crack than the Portland cement concretes;
2. The total free shrinkage for slag cement concrete is clearly larger than for Portland cement concrete. This difference of behaviour is mainly due to the fast and large increase in the autogenous deformation of the slag cement concrete.
Following these experimental results, the effect of the autogenous deformation on the cracking sensibility of slag cement concretes seemed interesting to investigate. Their deformations (autogenous deformation, compressive and tensile basic creep) have been studied at early age for three concretes characterized by different slag contents (0, 42 and 71%) under free and restrained conditions. For monitoring free and restrained autogenous deformations, several test rigs aimed at limiting artefacts were designed, like the TSTM (Temperature Stress Testing Machine). Moreover, the behaviour of these concretes was also characterized by a study at a macro- and microstructure scale.
Finally, this study shows that the slag cement concretes under sealed and fully restrained conditions crack later than the Portland cement concrete, despite the fact that they are characterized by the largest autogenous deformation. This behaviour is due to:
- the slag effect on the hydration reaction of cementitious material;
- the cement matrix expansion of the slag cement concretes at early age which delays the occurrence of tensile stresses inside the material;
- the largest capacity of this concrete to relax tensile stresses.
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished
Depatie, Jonas. "Évaluation des propriétés mécaniques et physiques des matériaux bitumineux recyclés produits par retraitement en place". Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/29828/29828.pdf.
In order to respond to an increasing demand for re-using bituminous materials, this study, carried out under the Research Chair i3C, has evaluated the effect of recycled asphalt pavement (RAP) on the mechanical behavior of a recycled base materials for five different RAP content (0 , 30, 50, 60 and 70% RAP). The main objectives of this project were to characterize the resilient and permanent deformation of these materials as well as assessing their variability on site and provide innovative solutions for the different issues. Laboratory tests were conducted on the five mixtures and field trials were carried out on three sites in the greater Quebec area. Some aspects were also tested in the road simulator apparatus of Laval University (SimUL). The data collected in the field with the light weight deflectometer (LWD) and the dynamic cone penetrometer (DCP) and also the triaxial cell has documented the characteristics and mechanical behavior of recycled base material. The project showed that materials with a higher RAP content are more likely to accumulate permanent deformation. Using base materials with more than 50% RAP can increase rutting problems. However, in order to overcome this prejudice, a model that relates the rate of deformation (B), the RAP content and the deviatoric stress is proposed. This new approach propose to evaluate the enhancement of the asphalt thickness needed to reduce the sensitivity to rutting of a recycled base layer.
Yahiaoui, Abdelhakim. "Sur le choix des produits semi-finis dans un contexte de très forte diversité". Phd thesis, Grenoble INPG, 2009. http://tel.archives-ouvertes.fr/tel-00414111.
Neu, Christophe. "Préparations cosmétiques et mise au point d'une coloration semi-permanente, sans oxydation, sans ammoniaque, destinée à la population masculine". Aix-Marseille 3, 2000. http://www.theses.fr/2000AIX30075.
In the domain of cosmetics, hair dyeing is one of the booming sectors. Formulation control is essential to companies for entering successfully on this market. The study is organised in two parts: Formulation and preparation of cosmetics for treatment and care of hair and skin. Formulation of semi permanent gel based hair dyeing, without using any oxidising agent or ammonia. The author studies different types of supports existing on the market, and sketch out the way to obtain his hair dye support. The study analyses the most concerned parameters witch influence the dye uptake on the hair shaft, and suggests ways to improve it. Fifteen different shades formulas are described, using mixtures of diverse nitrated and cationic hair dyes. The originality of this support is to allow dissolving and uptake of the dyes, without using a solvent
Urli, Simon. "Processus flexible de configuration pour lignes de produits logiciels complexes". Thesis, Nice, 2015. http://www.theses.fr/2015NICE4002/document.
The necessity of producing high quality softwares and the specific software market needs raise new approaches such as Software Product Lines (SPL). However in order to satisfy the growing requirements of new information systems, we need to consider those systems as a composition of many interconnected sub-systems called systems-of-systems. As a SPL, it implies to support the modularity and the large variability of such systems, from the definition of sub-systems to their composition, ensuring the consistency of final systems. To support design and usage of such a complex SPL, we propose a new approach based on (i) the definition of a SPL domain model, (ii) the formalization of variability using feature models (FM) and (iii) the representation of dependencies between those different FM. In order to manage the complexity of this SPL we complete our approach by in one hand algorithms ensuring the consistency of the SPL and on the other hand the definition of a configuration process which guarantees the consistency of products without imposing order in user choices and authorizing to cancel any choice. This thesis presents a formalization of these works and demonstrates the expected properties of those SPL, like the control of the product line consistency with incremental algorithms exploiting the domain model topology, the formal definition and the proof of the configuration process flexibility, and the consistency concepts of the process itself. On these basis, we propose a first implementation and we validate our works on a SPL dedicated to an industrial scale system-of-systems for producing digital signage systems
Bécan, Guillaume. "Metamodels and feature models : complementary approaches to formalize product comparison matrices". Thesis, Rennes 1, 2016. http://www.theses.fr/2016REN1S116/document.
Product Comparison Matrices (PCMs) abound on the Web. They provide a simple representation of the characteristics of a set of products. However, the lack of formalization and the large diversity of PCMs challenges the development of software for processing these matrices. In this thesis, we develop two complementary approaches for the formalisation of PCMs. The first one consists in a precise description of the structure and semantics of PCMs in the form of a metamodel. We also propose an automated transformation from PCMs to PCM models conformant to the metamodel. The second one consists in synthesizing attributed feature models from a class of PCMs. With our contributions, we propose a generic and extensible approach for the formalization and exploitation of PCMs
Moussiliou, Coles Moudjib. "Collaboration et partage de coûts dans un réseau d'entreprises". Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25903/25903.pdf.
Haddad, Samir. "Modèle d'évaluation des performances d'une ligne de production d'une séquence de N produits distincts sur M machines avec (M-1) stocks tampons". Thesis, Université Laval, 2012. http://www.theses.ulaval.ca/2012/29402/29402.pdf.
Ramette, Quentin. "Construction de souches cellulolytiques de Clostridium acetobutylicum pour la production de produits chimiques de commodité". Electronic Thesis or Diss., Toulouse, INSA, 2022. http://www.theses.fr/2022ISAT0053.
The overarching objective of the PhD is to construct and select a cellulolytic C. acetobutylicum bacterium which is able to grow on pretreated lignocellulosic biomass. Modification of C. acetobutylicum's genome will be performed using the synthetic biology tools (suicide vectors coupled to genome editing with an inducible CRISPR-Cas9 system) previously developed in the EAD3 at TBI (Foulquier et al. 2019). The most efficient mutants for the different “industrial lignocellulosic feedstocks” will be selected and characterized from a biochemical and molecular point of view. The identified key proteins will also be characterized by overproducing them by E. coli BL21 DE3. This approach should allow a better understanding of the parameters governing cellulosome efficiency and will improve the fundamental knowledge on the mechanism of lignocellulosic biomass hydrolysis by the C. acetobutylicum cellulosome. References Foulquier, Celine, Ching-Ning Huang, Ngoc-Phuong-Thao Nguyen, Axel Thiel, Tom Wilding-Steel, Julie Soula, Minyeong Yoo, et al. 2019. “An Efficient Method for Markerless Mutant Generation by Allelic Exchange in Clostridium acetobutylicum and Clostridium saccharobutylicum Using Suicide Vectors.” Biotechnology for Biofuels 12 (1): 31. https://doi.org/10.1186/s13068-019-1364-4
Simard, Sabrina. "Occurrence des sous-produits de la désinfection dans l'eau des piscines de la ville de Québec". Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26081/26081.pdf.
Koffi, Kouassi. "Contribution au développement d'un procédé de stabilisation d'une boisson à base d'eau et de sirop d'érable par la technologie d'électro-activation en solution". Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/30160/30160.pdf.
Developing new methods to treat food and food products by the use of electrochemical techniques has played an important role in number of industrial processes. Among these electrochemical techniques, electro-activation is currently a new technology to treat and improve the quality of products and aqueous solutions in the food industry. Electro-activation is called "reagentless technology", which means a technology without the use of chemicals to auto-generate the conditions for chemical treatment of a food solution. Thus the main objective of this study was to develop a new technological approach using electro-activation as an electrochemical method for physico-chemical stabilization drinks from maple. The purpose of the study was to assess electrochemical parameters such as pH, redox potential (O.R.P), the transmittance and the Brix degree and energy consumption during electro-activation of the product. To achieve this objective, experiments were conducted using three different configurations of the electro-activation reactor which differ each over by the position of the anions exchange membrane (AEM) and the cations exchange membrane (CEM) relative to the electrodes and the nature of the electrolyte (NaCl or Na2CO3) contained in the central cell of the reactor : configuration # 1 (Anode | Product | AEM | Na2CO3 | CEM | NaCl | Cathode), configuration #2 (Anode | Product | CEM | Na2CO3 | AEM | NaCl | Cathode) and configuration #3 (Anode | Product | CEM | NaCl | AEM | NaCl | Cathode). The results showed the effectiveness of electro-activation to reduce pH, to improve the biological value of the product by increasing redox potential. At room temperature, the minimum pH reached was 3.89 for a maximum redox potential of 417.33 mV; configuration # 3, showed the highest acidification rate. Electro-activation technique yielded minimum pH of 3.78, to a redox potential of 329.67 mV, at 55 °C under application of a current of 150 mA. Product’s transmittance increased slightly during electro-activation, but, no effect on the Brix degree was recorded. As with any industrial process, the study also focused on the determination of ideal electro-activation conditions by using an optimization method based on the response surface method (MSR) of Minitab ® software, according comparative analysis, to determine the best factors combination allowing to obtain highest product acidity and redox potential combined with a minimum overall electric resistance (RG) of the reactor. Optimization related to the comparative study of configurations #1, #2 and #3, under the application of currents of intensity 50, 70 to 100 mA, at room temperature (T = 23 ° C) indicates that electro-activation performed with the configuration #3 for 77.5 min under a current of 100 mA, are conditions that optimize the process: pH 4.8; O.R.P: 343.3 mV; RG : 646.3 Ω. For the comparative study of configurations # 1 and # 3, under the application of a constant current of 150 mA at temperatures (T > Ta) results indicate a treatment time of 108 min, configuration # 3, temperature 35 ° C as operating conditions for optimal response : pH 4.2, O.R.P : 398.26 mV, RG: 530.6 Ω. Regarding the study on setting configuration # 3, under 150 mA at temperatures (T ≥ Ta) the best conditions are temperature 46.6 ° C and a treatment time of 118 min, for an optimize response of : pH 4.1, O.R.P : 343.2 mV, RG : 410.4 Ω.
Beaulieu, Christine. "Caractérisation spatio-temporelle de la réactivité des précurseurs de sous-produits de la désinfection en réseau de distribution d'eau potable". Thesis, Université Laval, 2010. http://www.theses.ulaval.ca/2010/26960/26960.pdf.
Mercier, Shanks Catherine. "Variabilité spatio-temporelle des sous-produits de la désinfection émergents (haloacétonitriles, halonitrométhane et halocétones) dans un réseau de distribution d'eau potable". Thesis, Université Laval, 2012. http://www.theses.ulaval.ca/2012/29065/29065.pdf.