Teses / dissertações sobre o tema "Développement d'arôme"
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Veja os 16 melhores trabalhos (teses / dissertações) para estudos sobre o assunto "Développement d'arôme".
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Candelon, Nicolas. "Conception et développement d'une nouvelle méthode d'analyse de précuseurs cysteinyles d'arômes du vin et d'indicateurs de maturité". Thesis, Bordeaux 1, 2010. http://www.theses.fr/2010BOR14145/document.
Texto completo da fonteAnalytical methods for the detection and quantification of wines aroma typically utilise HPLC-MS or GC-MS. The methods require some isolation and concentration step preceding the analysis. Enzyme-linked immunosorbent assays (ELISAs) are becoming either alternative complementary analytical tools to conventional methods because of their rapidity, sensitivity, selectivity, and low cost. In this Thesis, the applicability of ELISAs for detection and quantification of precursors of volatile thiols and alkylmethoxypyrazines, which have been isolated from wines, made from Cabernet Sauvignon or Sauvignon Blanc, are described
Lesourd, Emmanuel. "Le développement du système d'arme aéromobile de 1945 à 1991". Paris 1, 2000. http://www.theses.fr/2000PA010586.
Texto completo da fonteLe, Breton Magali. "Caractérisation et identification d'ARNms différentiellement recrutés dans les polysomes en fonction de l'activité du complexe CDK1/cycline B". Paris 6, 2004. http://hal.upmc.fr/tel-01117534.
Texto completo da fonteGraindorge, Antoine. "Identification à grande échelle d'ARNm maternels ciblés par des régulations post-transcriptionnelles durant le développement précoce de Xenopus tropicalis". Rennes 1, 2006. http://www.theses.fr/2006REN1S105.
Texto completo da fonteLe, Van Vinh. "Développement de formulations intégrales de volume en magnétostatique". Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAT132/document.
Texto completo da fonteIn recent years, the Volume Integral Method (VIM) has been received particular attention formodeling of low frequency electromagnetic problems. The main advantage of this method is thatinactive regions do not to be discretized, which makes it light and rapid. Associated with matrixcompression methods, the VIM is a competitive alternative to the finite element method for modelingelectromagnetic devices containing a predominant air volume.This PhD thesis focuses on the development of two volume integral formulations for solvingmagnetostatic problems, in the presence of nonlinear materials, magnets, coils, multiply connectedmagnetic regions, and the presence of magnetic shielding. The first one is a mesh magnetic fluxformulation based on the interpolation of facet elements and the second one is a magnetic vectorpotential formulation based on the interpolation of edge elements. The application of theseformulations provides accurate results even with coarse meshes and allows solving straightforwardnonlinear magnetostatic problems. Methods for computing global magnetic force and magnetic fluxthrough a coil were also implemented as part of this work. Developments performed in the MIPSEplatform were validated on academic case-tests as well as some industrial devices
Costermans, Christian. "Calcul symbolique non commutatif : analyse des constantes d'arbre de fouille". Phd thesis, Université des Sciences et Technologie de Lille - Lille I, 2008. http://tel.archives-ouvertes.fr/tel-00338482.
Texto completo da fonteNos travaux visant à appliquer des méthodes symboliques pour l'étude de ces variables aléatoires, nous remplaçons l'utilisation de multi-indices par des codages sur des alphabets distincts, et nous appuyons alors sur des résultats importants en combinatoire des mots pour les appliquer à nos suites de SHM, et aux fonctions polylogarithmes, qui sont des variantes des génératrices ordinaires des SHM. Dans les cas convergents, les deux objets convergent (respectivement lorsque z tend vers 1 et lorsque N tend vers l'infini) vers la même limite, appelée polyzêta. Pour les cas divergents, l'utilisation de séries génératrices non commutatives nous permet d'établir un théorème ``à l'Abel'', faisant apparaître une limite commune. Ce théorème permet de donner une forme explicite aux constantes d'Euler généralisées associées à des SHM divergentes et ainsi d'obtenir un algorithme très efficace pour calculer leur développement asymptotique.
Finalement, nous proposons des applications des sommes harmoniques dans le domaine des structures de données multidimensionnelles, pour lesquelles notre approche donne naissance à des calculs exacts, qui peuvent par la suite être aisément évalués asymptotiquement.
Mohamed, Sophie. "Développement de polymères à empreintes moléculaires basé sur une manganoporphyrine utilisé comme catalyseur oxydatif de dérivés soufrés. Vers une nouvelle approche biomimétique de décontamination d'armes chimiques". Thesis, Normandie, 2019. http://www.theses.fr/2019NORMR027/document.
Texto completo da fonteMolecular imprinting polymer is a useful technique for creating artificial receptors able of selectively binding substrates. These recognition properties are particularly interesting for developing macromolecular catalysts. Our aim was to access to a reusable supramolecular catalyst able of oxidizing sulfur derivatives under heterogeneous conditions in the presence of a mild and eco-sustainable oxidant such as hydrogen peroxide. Given the expertise of the team, we decided to focus our work on the development of a catalytic system for the decontamination of surfaces or equipment, after an exposure to compounds that can be detoxified by a selective oxidation of sulfides. Thus, we prepared a porphyrin-based MIP that we tested in the oxidation of various sulfides. The mild conditions used for the catalysis allowed a control of the oxidation degree of a simulant of yperite, leading to a great selectivity the sulfoxide derivative, and avoiding the toxic sulfone formation. With other structures similar to VX, we showed that it is possible to regioselectively oxidize the sulfur atom, and highlighted the interest of this process to facilitate the cleavage of a C-S bond. This approach is then an interesting decontamination strategy that will be evaluated in the future to the case of true chemical warfare agents
Campocasso, Sébastien. "Développement d'un modèle d'efforts de coupe multi-opérations et multi-matériaux. Application au tournage du cuivre pur dans différents états métallurgiques". Phd thesis, Paris, ENSAM, 2013. http://pastel.archives-ouvertes.fr/pastel-00933906.
Texto completo da fonteQuétier, Fabien. "Vulnérabilité des écosystèmes semi-naturels européens aux changements d'utilisation des terres : application aux prairies subalpines de Villar d'Arène, France". Montpellier, ENSA, 2006. http://www.theses.fr/2006ENSA0008.
Texto completo da fonteSemi-natural ecosystems in Europe provide a wide range of ecosystem services but are associated with a marginal farming economy, making them vulnerable to future changes in the policy and market context of agriculture. We explore this vulnerability using an integrative approach, coupling scenario-based land-use change projections with process-based modeling of their impacts on ecosystem service provision and a social evaluation of their consequences. The proposed methodology is applied to subalpine grasslands in the central French Alps as a case-study. We used this opportunity to contribute to the development of ecological tools: plant functional traits. We show that they provide an adequate framework for studying the impacts of land-use change on semi-natural grasslands, at the plot and landscape scale, using experiments or via simulation modeling. We also contribute to developing tools in the social sciences. We show that social representations of subalpine grasslands relate to European level sociopolitical discourses on rural development. We also show how they enable a social evaluation of land-use change impacts. We use these results to discuss the vulnerability of subalpine grasslands and their users in Villar d’Arène
Garcez, Palha Inês. "mRNA Transport and Translation in the Developing Axons of the Zebrafish Embryo". Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066260.
Texto completo da fonteIn recent years, axonal protein synthesis has been established as an important mechanism to fine regulate spatial and temporal neuronal responsiveness to the varying microenvironment, especially during axonal development and regeneration. For that, mRNA transcripts have to be localized to the axons in order to be translated. In fact, several mRNA populations have been identified along the axons of diverse vertebrate neuronal types. The proper transport from the cell body to the axonal compartment requires specific sequences or mRNA structures, usually found in the 3’UTR of the transcript. Only a few studies have confirmed that mRNA transport and translation take place in axons of living vertebrates, and that these mechanisms can be involved in distinct neuronal functions, as the maintenance of axonal homeostasis, pathfinding, and axonal growth and branching. Our lab previously demonstrated in vivo the presence of specific mRNAs, as nefma transcript, in growing axons of the zebrafish embryo. Thanking advantage of a reporter system developed in the lab, it was shown that axonal transport (or retention at the cell body) of several transcripts depended on their 3’UTR.Building upon these important results, in a first part of this work, we sought to investigate the function of the axonally transported nefma in the developing axons of the zebrafish embryo. Indeed, Nefma is a neuron-specific cytoskeletal protein, which expression is triggered during neuronal differentiation. We showed that the 3A10 signal is reduced as the MO concentration increases and this staining is a useful readout for the efficiency of the MO, suggesting that the 3A10 antibody might recognize nefma. We also demonstrated that the Mauthner neurons differentiate at the right time and place in the morphants. Moreover, we saw that the morphant axons zigzagging increases with increasing MO concentrations and that mbp accumulates in patches around axonal bundles in nefma morphants. However, nefma loss-of-function defects are not totally penetrant and difficult to quantify. Furthermore, in a second part of the present study, we aimed at optimizing a technique facilitating the visualization of axonal translation of specific mRNAs in the same in vivo model. For this, we developed a translation reporter system, inspired on the ‘TimeSTAMP’ technique developed by Roger Tsien’s team, which allows the identification of translation sites along the axons by labeling newly synthesized protein in an ingenious fashion
Golovanov, Cristian. "Développement de formulations éléments finis 3D en potentiel vecteur magnétique : application à la simulation de dispositifs électromagnétiques en mouvement". Phd thesis, Grenoble INPG, 1997. http://tel.archives-ouvertes.fr/tel-00904770.
Texto completo da fonteGarcez, Palha Inês. "mRNA Transport and Translation in the Developing Axons of the Zebrafish Embryo". Electronic Thesis or Diss., Paris 6, 2017. http://www.theses.fr/2017PA066260.
Texto completo da fonteIn recent years, axonal protein synthesis has been established as an important mechanism to fine regulate spatial and temporal neuronal responsiveness to the varying microenvironment, especially during axonal development and regeneration. For that, mRNA transcripts have to be localized to the axons in order to be translated. In fact, several mRNA populations have been identified along the axons of diverse vertebrate neuronal types. The proper transport from the cell body to the axonal compartment requires specific sequences or mRNA structures, usually found in the 3’UTR of the transcript. Only a few studies have confirmed that mRNA transport and translation take place in axons of living vertebrates, and that these mechanisms can be involved in distinct neuronal functions, as the maintenance of axonal homeostasis, pathfinding, and axonal growth and branching. Our lab previously demonstrated in vivo the presence of specific mRNAs, as nefma transcript, in growing axons of the zebrafish embryo. Thanking advantage of a reporter system developed in the lab, it was shown that axonal transport (or retention at the cell body) of several transcripts depended on their 3’UTR.Building upon these important results, in a first part of this work, we sought to investigate the function of the axonally transported nefma in the developing axons of the zebrafish embryo. Indeed, Nefma is a neuron-specific cytoskeletal protein, which expression is triggered during neuronal differentiation. We showed that the 3A10 signal is reduced as the MO concentration increases and this staining is a useful readout for the efficiency of the MO, suggesting that the 3A10 antibody might recognize nefma. We also demonstrated that the Mauthner neurons differentiate at the right time and place in the morphants. Moreover, we saw that the morphant axons zigzagging increases with increasing MO concentrations and that mbp accumulates in patches around axonal bundles in nefma morphants. However, nefma loss-of-function defects are not totally penetrant and difficult to quantify. Furthermore, in a second part of the present study, we aimed at optimizing a technique facilitating the visualization of axonal translation of specific mRNAs in the same in vivo model. For this, we developed a translation reporter system, inspired on the ‘TimeSTAMP’ technique developed by Roger Tsien’s team, which allows the identification of translation sites along the axons by labeling newly synthesized protein in an ingenious fashion
Golovanov, Cristian. "Développement de formulations éléments finis 3D en potentiel vecteur magnétique : application à la simulation de dispositifs électromagnétiques en mouvement". Grenoble INPG, 1997. http://www.theses.fr/1997INPG0133.
Texto completo da fonteThe aim of this thesis is to develop adapted numerical methods to model 3D electromagnetic equations coupled with electric circuit equations and with the displacement of moving parts, applied to the electric rotating machines. The formulation use as the principal unknown the non-gauged magnetic vector potential, interpolated with the edge elements. The compatibility of the formulation is ensured by the representation of the source CUITent density with the help of an electric vector potential. The electric circuit is analysed using the method of time integrated electric potentials and the direct coupling of the magnetic and electric systems. The connection between the moving mesh and the stationary mesh is realised by an original interpolation method. Specific numerical methods for the integration of the frrst order temporal system using an stepby- step algorithm and different techniques of system resolution were also developed. AlI these developments were validated on a switched reluctance motor
Strazielle, Nathalie. "Apport de l'analyse de l'ARN messager dans l'étude des variations d'expression de la gamma-glutamyltransferase et des cytochromes P-450 chez le rat : application aux phénomènes d'induction hépatique et d'ontogénèse dans le cerveau". Vandoeuvre-les-Nancy, INPL, 1991. http://www.theses.fr/1991INPL124N.
Texto completo da fonteHassan, loni Yahaya. "Ablation laser couplée à l'ICP-MS-HR : outil pour l'étude du comportement d'élément d'intérêt dans l'environnement". Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2019. http://www.theses.fr/2019IMTA0157.
Texto completo da fonteThe High Resolution Inductively Coupled Plasma Mass Spectrometry (HR-ICP-MS) coupled to a laser ablation system (LA) is known as a powerful analytical technique for the determination of major, minor and trace elements in solid materials due to its multiple advantages. Within the framework of this thesis, specific developments have been made, such as the set up of a 2D quantitative elemental mapping method and the quantification method using the sum normalization strategy by summation of the element oxides to 100% (w/w). This work includes sample preparation, data acquisition and processing. The analytical developments carried out during this thesis were applied to two scientific projects,the quantification of uranium in oak tree rings (Quercus petraea) dated for the chronological monitoring of contamination related to mining and the analysis of elements in Callovo-Oxfordian (COx) claystone necessary to understand its retention properties as part of the assessment of the safety of deep geological radioactive waste storage. The development of 2D elemental mapping has shown a heterogeneous distribution of uranium at the surface of tree rings that does not allow precise quantification; HR-ICP-MS in solution mode has proved to be more appropriate. The analysis of the distribution of elements naturally present in COx and their "lability" made it possible to evaluate "in situ" Kd values that could be compared to data determined by the "batch" or "bottom-up" approaches. The LA-HR-ICP-MS was also used to characterize COx retention capacities on intact samples doped with europium
Le, Floch Yann. "DÉVELOPPEMENT DE FORMULATIONS 3D ÉLÉMENTS FINIS T0 POUR LA PRISE EN COMPTE DE CONDUCTEURS MASSIFS ET BOBINÉS AVEC UN COUPLAGE CIRCUIT". Phd thesis, 2002. http://tel.archives-ouvertes.fr/tel-00493123.
Texto completo da fonte