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Dissertations / Theses on the topic 'Graphes de potentiels'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Belhadj, Ihssen. "Ingénierie des connaissances pour l’épidémiologie et l’aide à la décision en santé publique : Analyse des besoins potentiels et expérimentations dans le contexte du registre français des maladies rénales." Thesis, Paris 13, 2014. http://www.theses.fr/2014PA132068.

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Construire des terminologies de maladies est un enjeu majeur dans le développement des systèmes d’information épidémiologiques et d’aide à la décision de santé publique qui soient efficients et durables. A partir du contexte du registre français de l'Insuffisance Rénale Terminale, une analyse des besoins de représentation des termes de maladies a été réalisée mettant en évidence le problème aigu et occulté de continuité statistique dans les bases de données et de connaissances. La « continuité terminologique » est proposée comme une réponse au besoin de continuité statistique. Une méthode géné

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2

Le, Pape Claude. "Des systèmes d'ordonnancement flexibles et opportunistes." Paris 11, 1988. http://www.theses.fr/1988PA112108.

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Les chercheurs en intelligence artificielle veulent déterminer comment un système informatique doit être organisé pour qu'un comportement intelligent en émerge. La première partie de cette thèse montre comment des techniques qu'ils ont développées peuvent être utilisées pour résoudre des problèmes d'ordonnancement Quatre systèmes d'ordonnancement à court terme, appelés SOJA, ISIS, OPIS et SONIA, y sont présentés. De façon réciproque, l'étude des problèmes d'ordonnancement nous permet d'étudier des situations dans lesquelles un système doit faire preuve d'un minimum d’intelligence. Il faut en e

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3

Loynes, Basile de. "Graphes & marches aléatoires." Rennes 1, 2012. https://ecm.univ-rennes1.fr/nuxeo/site/esupversions/2c2ff4a7-cb0d-4f16-bdaa-3e8ec028fa8d.

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The study of random walks demonstrates connections between their algebraic, combinatorial, geometric and stochastic properties. The first example of such a connection was given in a theorem of P\'olya dealing with nearest neighbourhood random walks on the space of N-dimensional integers. Random walks on groups provide with many examples, however it should be interesting to have such rigid results in the case of weaker algebraic structures such that semigroupoids and groupoids. In this thesis, one example of semigroupoid and one example of groupoid are considered; they are both defined as const

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4

De, Loynes Basile. "Graphes et marches aléatoires." Phd thesis, Université Rennes 1, 2012. http://tel.archives-ouvertes.fr/tel-00726483.

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L'étude des marches aléatoires fait apparaître des connexions entre leurs propriétés algébriques, géométriques ou encore combinatoires et leurs propriétés stochastiques. Si les marches aléatoires sur les groupes - ou sur des espaces homogènes - fournissent beaucoup d'exemples, il serait appréciable d'obtenir de tels résultats de rigidité sur des structures algébriques plus faibles telles celles de semi-groupoide ou de groupoide. Dans cette thèse il est considéré un exemple de semi-groupoide et un exemple de groupoide, tous les deux sont définis a partir de sous-graphes contraints du graphe de

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5

Hills, Romilly D. Y. "Physical properties of graphene nano-devices." Thesis, Loughborough University, 2015. https://dspace.lboro.ac.uk/2134/17993.

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In this doctoral thesis the two dimensional material graphene has been studied in depth with particular respect to Zener tunnelling devices. From the hexagonal structure the Hamiltonian at a Dirac point was derived with the option of including an energy gap. This Hamiltonian was then used to obtain the tunnelling properties of various graphene nano-devices; the devices studied include Zener tunnelling potential barriers such as single and double graphene potential steps. A form of the Landauer formalism was obtained for graphene devices. Combined with the scattering properties of potential bar

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6

Pakulski, Dawid. "Graphene based materials and their potential applications." Thesis, Strasbourg, 2019. http://www.theses.fr/2019STRAF060.

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Cette thèse de doctorat a pour objectif scientifique la synthèse de matériaux bidimensionnels fonctionnalisés (graphène et oxyde de graphène) et leur caractérisation physicochimique complète, avec un accent particulier apporté sur les propriétés d'adsorption et de stockage d'énergie. Nous avons démontré que la modification covalente de l'oxyde de graphène (GO) avec un polymère organique (BPEI) affecte très favorablement l'efficacité du processus d'adsorption. Les valeurs de la capacité maximale d'adsorption (qmax) des ions de métaux lourds favorisent de manière significative ce matériau par ra

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7

Jones, Gavin. "Graphene on crystalline insulators : subsurface potentials and screening effects." Thesis, University of Bath, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.665439.

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In this work we examined the effect of localized electrostatic potentials generated by subsurface nanostructures on overlaid graphene layers of various thicknesses and the screening produced by such layers. Electrostatic Force and Kelvin Probe microscopies were used to investigate few-layer graphene (FLG) domains on top of ionic crystals. Step edges, pits and protrusions within the ionic surface create sizeable and local perturbations of the surface potential of graphene overlayers. These were within the tenth of eV range in FLG with up to three layers, and become considerably screened in thic

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8

Montealegre, Barba Pedro. "Algorithmes de graphes séquentiels et distribués : algorithmes paramétrés via des cliques maximales potentielles : modèle de diffusion dans une clique congestionnée." Thesis, Orléans, 2017. http://www.theses.fr/2017ORLE2001/document.

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Cette thèse porte sur des aspects structuraux et algorithmiques des graphes. Elle est divisée en deux parties, qui comportent deux études différentes : une partie sur des algorithmes centralisés-séquentiels, et une autre sur des algorithmes distribués. Dans la première partie, on étudie des aspects algorithmiques de deux structures de graphes appelés séparateurs minimaux et cliques maximales potentielles. Ces deux objets sont au coeur d'un méta-théorème dû à Fomin, Todinca and Villanger (SIAM J. Comput. 2015), qui affirme qu'une grande famille des problèmes d'optimisation peut être résolue en

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9

Papin, Jean-Charles. "A Scheduling and Partitioning Model for Stencil-based Applications on Many-Core Devices." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLN032/document.

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La puissance de calcul des plus grands calculateurs ne fait qu'augmenter: de quelques centaines de cœurs de calculs dans les années 1990, on en est maintenant à plusieurs millions! Leur infrastructure évolue aussi: elle n'est plus linéaire, mais complètement hiérarchique. Les applications de calcul intensif, largement utilisées par la communauté scientifique, doivent donc se munir d'outils permettant d'utiliser pleinement l'ensemble de ces ressources de manière efficace. La simulation numérique repose bien souvent sur d'importants calculs dont le coût, en termes de temps et d'accès mémoire, pe

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10

Roxo, Carolina Sofia Pereira. "Evaluation of the cytotoxic potential of graphene nanomaterials." Master's thesis, Universidade de Aveiro, 2018. http://hdl.handle.net/10773/22002.

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Mestrado em Biologia Molecular e Celular<br>Graphene is a single-atom thick, two-dimensional sheet of hexagonally arranged carbon atoms and since its isolation, its properties have been widely studied, and graphene and graphene-based nanomaterials are now applied in several fields. Several types of graphene-family nanomaterials (GFN) have been synthesized and widely applied, but there is still some misunderstanding about their potential effects on human health, especially since these nanomaterials can be easily inhaled, especially in the manufacturing process, if they are not properly cared fo

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11

Dale, Joel Kelly. "Electric field lines and voltage potentials associated with graphene nanoribbon." Thesis, University of Iowa, 2013. https://ir.uiowa.edu/etd/2471.

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Graphene can be used to create circuits that are almost superconducting, potentially speeding electronic components by as much as 1000 times [1]. Such blazing speed might also help produce ever-tinier computing devices with more power than your clunky laptop [2]. Graphite is a polymorph of the element carbon [3]. Graphite is made up of tiny sheets of graphene. Graphene sheets stack to form graphite with an interplanar spacing of 0.335 nm, which means that a stack of 3 million sheets would be only one millimeter thick. [1]

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12

Asano, Yasuhiro, Toshihiro Yoshida, Yukio Tanaka, and Alexander A. Golubov. "Electron transport in a ferromagnet-superconductor junction on graphene." American Physical Society, 2008. http://hdl.handle.net/2237/11295.

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13

Shai, Moshibudi. "Computational and experimental studies of graphene and carbon nanotubes." Thesis, University of Limpopo, 2016. http://hdl.handle.net/10386/1562.

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Thesis (M. Sc. (Physics)) -- University of Limpopo, 2016.<br>Bilayer graphene and single-walled carbon nanotubes were studied through classical molecular dynamics using Tersoff potential. The Tersoff potential has been the most successful model to replicate much of the semiconducting properties in carbon structures. The simulations were performed within a canonical (NVT) ensemble for structural properties and isothermal–isobaric ensemble (NPT) for thermodynamic properties of both materials. The bilayer graphene consists of two models of 64 and 256 atoms. Single-walled carbon nanotubes consist

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14

Celik, Yasemin. "Production of graphene based materials and their potential applications." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30008/document.

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Le graphène est un matériau prometteur pour de nombreuses applications du fait de ses propriétés exceptionnelles. Cependant, à la fois les propriétés et les rendements des graphènes et dérivés sont très variables et dépendants de la méthode de production utilisée. De ce fait, la méthode de production doit être développée en accord avec les besoins liés à l'application visée. Dans cette thèse, différents nanomatériaux dérivés du graphène ont été préparés en employant deux méthodes différentes, l'exfoliation en milieu liquide et la synthèse directe par dépôt chimique catalytique en phase vapeur

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15

Alqus, Rasha. "Characterisation of carbohydrate-graphene interactions using molecular simulation." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/characterisation-of-carbohydrategraphene-interactions-using-molecular-simulation(14685a9e-4497-4aa4-9379-209a9b008cc6).html.

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Molecular dynamics (MD) simulations have been applied to study the interactions between different carbohydrates and graphene. In cellulose-graphene complexes, the behaviour of hydrophobic and hydrophilic faces of cellulose chains on a single layer of graphene in aqueous solvent have been investigated. The hydrophobic cellulose face forms a stable complex with graphene and the interface remains solvent-excluded over the course of the simulation. Cellulose chains contacting graphene preserved their intra- and inter-chain hydrogen bonds and maintaining a tg orientation of its hydroxymethyl groups

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16

Lindsay, Lucas R. "Theory of Phonon Thermal Transport in Single-walled Carbon Nanotubes and Graphene." Thesis, Boston College, 2010. http://hdl.handle.net/2345/1167.

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Thesis advisor: David A. Broido<br>A theory is presented for describing the lattice thermal conductivities of graphene and single-walled carbon nanotubes. A phonon Boltzmann transport equation approach is employed to describe anharmonic phonon-phonon, crystal boundary, and isotopic impurity scattering. Full quantum mechanical phonon scattering is employed and an exact solution for the linearized Boltzmann transport equation is determined for each system without use of common relaxation time and long-wavelength approximations. The failures of these approximations in describing the thermal trans

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17

Steele, Brad. "Non-equilibrium melting and sublimation of graphene simulated with two interatomic potentials." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4586.

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The mechanisms of the sublimation of graphene at zero pressure and the condensation of carbon vapor is investigated by molecular dynamics (MD) simulations. The interatomic interactions are described by the Reactive Empirical Bond Order potential (REBO). It is found that graphene sublimates at a temperature of 5,200 K. At the onset of sublimation, defects that contain several pentagons and heptagons are formed, that are shown to evolve from double vacancies and stone wales defects. These defects consisting of pentagons and heptagons act as nucleation sites for the gaseous phase. The influence o

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18

Sandner, Andreas [Verfasser], and Dieter [Akademischer Betreuer] Weiss. "High-mobility graphene in 2D periodic potentials / Andreas Sandner ; Betreuer: Dieter Weiss." Regensburg : Universitätsbibliothek Regensburg, 2018. http://d-nb.info/1153606704/34.

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19

Fiszka, Christophe. "Diffusion et localisation de l'opérateur de Schrödinger à potentiel quasi-périodique." Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCC023.

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By analogy with the finite dimension case, we consider, in the first instance, the skew-products on S(\RAZ)^d\timesSO_p(\R)S. Unlike the periodic case, solved by the Floquet theorem, where every system is reductible, the quasi-periodic case is much more interesting. For example, we show that the systems are typically : - in a measure sense, reducibles ; in a topological sense, uniquely ergodic, and so, non reducibles.

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20

Reis, Débora de Oliveira. "Characterization of the cytotoxic potential of graphene nanoplatelets in lung cells." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/17465.

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Mestrado em Biologia Molecular e Celular<br>Graphene is one of the carbon allotropes. Its physical and chemical characteristics provide unique properties: high surface area, exceptional electrical and thermal conductivities, high mechanical strength, ability to bio-functionalization and mass production. All these qualities make graphene widely applicable and, therefore, it is necessary to thoroughly investigate their possible adverse effects in the context of human health. This study evaluated the cytotoxic potential of graphene nanoplatelets in lung cells (cell line A549). The cells were cult

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21

Viegas, Juliane Oliveira. "Cytotoxic potential of graphene oxide in human lung Adenocarcinoma cell line." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/22356.

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Mestrado em Biologia Molecular e Celular<br>Graphene oxide (GO) is a compound with application in several fields, especially biomedicine and environment, due to its unique properties which confer excellent characteristics. Despite the nowadays wide application of nanomaterials, the lack of information regarding the risks to human health and the environment is still remaining. Consequently, the investigation about the toxicity of nanoparticles must be a priority. The lung is one of the main routes of entry for nanoparticles into the body, therefore, the aim of this study is to evaluate the cyto

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22

Petronilho, Sílvia Lancha. "Sustainable viticulture in Bairrada appellation: vineyard and harvest year effects on grapes oenological potential." Doctoral thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/14101.

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Doutoramento em Química<br>The sustainable viticulture of a region passes, among other aspects, for maximizing the varieties potential minimizing subsequent interventions during winemaking, which should contribute to the production of quality wines maintaining their typicity and rationalizing costs. The detailed knowledge of each Appellation specificities, namely vineyard parcel (soil type and topographical peculiarities) and harvest climatic conditions is crucial for sustainability in this sector. Thus, in line with this current trend, the starting point for the development of this PhD

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23

Shokrieh, Farbod. "Divisors on graphs, binomial and monomial ideals, and cellular resolutions." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/52176.

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We study various binomial and monomial ideals arising in the theory of divisors, orientations, and matroids on graphs. We use ideas from potential theory on graphs and from the theory of Delaunay decompositions for lattices to describe their minimal polyhedral cellular free resolutions. We show that the resolutions of all these ideals are closely related and that their Z-graded Betti tables coincide. As corollaries, we give conceptual proofs of conjectures and questions posed by Postnikov and Shapiro, by Manjunath and Sturmfels, and by Perkinson, Perlman, and Wilmes. Various other results rela

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24

Schubert, Carsten. "Quantengraphen mit zufälligem Potential." Doctoral thesis, Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-83614.

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Ein metrischer Graph mit einem selbstadjungierten, negativen Laplace-Operator wird Quantengraph genannt. In dieser Arbeit werden Transporteigenschaften zufälliger Laplace-Operatoren betrachtet. Dazu wird die Multiskalenanalyse (MSA) von euklidischen Räumen auf metrische Graphen angepasst. Eine Überdeckung der metrischen Graphen wird aus gleichmäßig polynomiellem Wachstum und der gleichmäßigen Beschränkung der Kantenlängen gewonnen. Als Hilfsmittel für die MSA werden eine Combes-Thomas-Abschätzung und eine Geometrische Resolventenungleichung bewiesen. Zusammen mit einer Wegner-Abschätzung und d

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25

Degener, Patrick [Verfasser]. "Surface Deformation Potentials on Meshes for Computer Graphics and Visualization / Patrick Degener. Mathematisch-Naturwissenschaftliche Fakultät." Bonn : Universitäts- und Landesbibliothek Bonn, 2011. http://d-nb.info/1016987951/34.

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26

Tian, Peng. "Graphene-based high spatial resolution hall sensors with potential application for data storage media characterisation." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/graphenebased-high-spatial-resolution-hall-sensors-with-potential-application-for-data-storage-media-characterisation(0bb9f59f-a9e2-42e8-ac1f-0adc93e9ae01).html.

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This thesis reports on two graphene-based structures that have been proposed and fabricated as possible prototypes for high-spatial-resolution Hall sensors with potential application in research on high-density magnetic recording technology such as bit patterned magnetic recording (BPMR) and other areas where the measurement of highly inhomogeneous fields is required. There is a direct graphene-metal contact in the first structure, which is named as TYPE I in this thesis, so that the anomalous Hall effect (AHE) in the ferromagnetic islands deposited on the graphene could be detected. Meanwhile

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27

Schubert, Carsten. "Quantengraphen mit zufälligem Potential." Doctoral thesis, Universitätsverlag der Technischen Universität Chemnitz, 2011. https://monarch.qucosa.de/id/qucosa%3A19665.

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Ein metrischer Graph mit einem selbstadjungierten, negativen Laplace-Operator wird Quantengraph genannt. In dieser Arbeit werden Transporteigenschaften zufälliger Laplace-Operatoren betrachtet. Dazu wird die Multiskalenanalyse (MSA) von euklidischen Räumen auf metrische Graphen angepasst. Eine Überdeckung der metrischen Graphen wird aus gleichmäßig polynomiellem Wachstum und der gleichmäßigen Beschränkung der Kantenlängen gewonnen. Als Hilfsmittel für die MSA werden eine Combes-Thomas-Abschätzung und eine Geometrische Resolventenungleichung bewiesen. Zusammen mit einer Wegner-Abschätzung und

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28

Boyer, John D. "Geographic Analysis of Viticulture Potential in Virginia." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/37034.

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The state of Virginia was analyzed to establish its suitability for grape culture. This investigation occurred in two phases: a small scale analysis that encompassed the entire state, and a large scale analysis which focused on site selection at the local level. After identifying regions across the state in terms of their viticulture potential, a study area was chosen from within the highest ranking region. This study area was the focus for the local-scale site potential analysis. <p> First, to delineate regions across Virginia that had greater or lesser viticulture potential from a

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Davies, John Nathan Rhys Massheder. "Caustic magneto-oscillations of snaking/skipping electron transport near magnetic and potential interfaces on graphene." Thesis, Lancaster University, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658321.

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Near the sample edge, or a sharp magnetic field step the drift of two-dimensional (2D) electrons in a magnetic field has th'e form of skipping/snake orbits. We show that families of skipping/snake orbits of electrons injected at one point inside a 2D metal generically exhibit caustics folds, cusps and cusp triplets, and, in one exceptional case, and extreme section of the butterfly bifurcation. Periodic appearance of singularities along the ±B-interface leads to the magneto-oscillations of non local conductance in multi-terminal electronic devices. We move onto propose a semi-classical theory

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30

Martell, Hipolito. "La viabilité du cabotage maritime de marchandises conteneurisées entre la péninsule ibérique et l'Europe du nord-ouest." Phd thesis, Université du Havre, 2007. http://tel.archives-ouvertes.fr/tel-00465352.

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Depuis 1995, l'Union européenne cherche à trouver des solutions pour impulser le cabotage afin de rééquilibrer la distribution modale des transports en Europe. Les "autoroutes de la mer" sont une alternative de transport moins polluante que le mode routier, ainsi qu'une solution pour éviter la congestion des autoroutes. Mais en raison des caractéristiques du transport maritime international, le développement du cabotage n'est pas seulement une alternative écologique, il est aussi une nécessité économique pour le développement ou le maintien des activités maritimes et portuaires. Le cabotage po

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31

Cordella, Davide. "Equilibrium measures on trees and square tilings." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15909/.

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Nella tesi vengono trattati alcuni argomenti di teoria del potenziale, in particolare le nozioni di capacità di un insieme, funzione di equilibrio e misura di equilibrio. Sono presentate definizioni e principali risultati di teoria del potenziale assiomatica. Tali risultati vengono poi tradotti nel contesto discreto degli alberi, definendo il bordo di un albero come spazio metrico e le capacità dei suoi sottoinsiemi: ad esse sono associate le relative funzioni di equilibrio sui lati dell'albero, che a loro volta corrispondono a misure d'equilibrio sul bordo. Uno dei risultati principali della

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Crombette, Pauline. "Contribution des technologies satellitaires Pléiades à l'étude des trames vertes urbaines : entre maintien des connectivités écologiques potentielles et densification des espaces urbains." Thesis, Toulouse 2, 2016. http://www.theses.fr/2016TOU20032/document.

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En milieu urbain, la concurrence entre les enjeux de préservation de la biodiversité et de la densification du territoire est particulièrement développée. Dans une optique d’aide à la décision, une meilleure connaissance des zones les plus conflictuelles est requise. Face au constat d’insuffisance et d’inadéquation des données et des méthodes nécessaires à la cartographie des Trames vertes urbaines, notre travail s’intègre en premier lieu dans une démarche technique. Celle-ci est centrée sur la mise en place d’une méthode de traitement d’images satellitaires Très Haute Résolution Spatiale Pléi

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33

Scenev, Vitalij. "Electronic properties of graphene and other carbon-based hybrid materials for flexible electronics." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2014. http://dx.doi.org/10.18452/17069.

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In dieser Arbeit wurden einerseits die elektronischen Eigenschaften von Graphenen und andererseits die Verwendung von Graphenen und Kohlenstoff-basierten Hybridmaterialien als transparente Elektroden untersucht. Entsprechend ist der erste, umfangreichere Teil der Arbeit Grundlagen-orientiert und fokussiert auf die elektrostatische Wechselwirkung zwischen Graphen und dem Substrat Glimmer. Der zweite, kleinere Teil befasst sich mit der Entwicklung leitfähiger Tinten auf der Basis von Graphenen und anderen Kohlenstoff-basierten Hybridmaterialien für Anwendungen in der druckbaren Elektronik, insbe

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34

Konečný, Martin. "Aplikace KPM na povrchu grafén/Si modifikovaném metodou FIB." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230836.

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This diploma thesis is focused on the application of Kelvin probe microscopy on graphene fabricated by the chemical vapour deposition. The theoretical part of the thesis deals with basic principles of Kelvin force microscopy and focus ion beam. Further, basic properties of graphene and its possible fabrication methods are discussed. The experimental part is focused on the surface potential measurements on graphene membranes fabricated on the substrate modified by focus ion beam. Finally, atomic force microscope lithography was used for nanopatterning of graphene sheets.

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35

Martell, Flores Hipolito. "La viabilité du cabotage maritime de marchandises conteneurisées entre la péninsule ibérique et l'Europe du nord-ouest." Le Havre, 2007. http://www.theses.fr/2007LEHA0001.

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Depuis 1995, l’union européenne cherche à trouver des solutions pour impulser le cabotage afin de rééquilibrer la distribution modale des transports en Europe. Les « autoroutes de la mer » sont une alternative de transport moins polluante que le mode routier, ainsi qu’une solution pour éviter la congestion des autoroutes. Mais en raison des caractéristiques du transport maritime international, le développement du cabotage n’est pas seulement une alternative écologique, il est aussi une nécessité économique pour le développement ou le maintien des activités maritimes et portuaires. Le cabotage

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36

Manea, Mihaela. "Potentiel, valorisation et perspectives de développement de l’œnotourisme en Moldavie Occidentale." Thesis, Paris 4, 2013. http://www.theses.fr/2013PA040251.

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La thèse de doctorat avec le titre “Potentiel, valorisation et perspectives de développement de l’œnotourisme en Moldavie occidentale” a comme but l’identification, l’évaluation et l’utilisation des ressources œnotouristique de la Moldavie en prenant comme exemple le modèle français alsacien d’exploiter cette forme de tourisme. La thèse est divisée en 5 chapitres, premièrement on a fait une analyse générale de tout ce que signifie l’œnotourisme et ses modèles de développement dans les Etats de nouveau monde et de l’ancien monde. Ensuite, on a présenté la place de la Moldavie dans le contexte n

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Perriot, Romain. "Development of Interatomic Potentials for Large Scale Molecular Dynamics Simulations of Carbon Materials under Extreme Conditions." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4384.

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The goal of this PhD research project is to devise a robust interatomic potential for large scale molecular dynamics simulations of carbon materials under extreme conditions. This screened-environment dependent reactive empirical bond order potential (SED-REBO) is specifically designed to describe carbon materials under extreme compressive or tensile stresses. Based on the original REBO potential by Brenner and co workers, SED-REBO includes reparametrized pairwise interaction terms and a new screening term, which serves the role of a variable cutoff. The SED-REBO potential overcomes the defici

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Singh, Anjeli Gilbert Juan E. "The potential benefits of multi-modal social interaction on the web for senior users." Auburn, Ala., 2009. http://hdl.handle.net/10415/2007.

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Bureau, Sylvie. "Modifications de l'environnement lumineux sur des grappes et des ceps de vigne : effets sur le potentiel aromatique des baies de Syrah et de Muscat de Frontignan." Montpellier 2, 1998. http://www.theses.fr/1998MON20021.

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Les environnements lumineux des grappes seules ou des ceps de vigne entiers ont ete modifies sur syrah et muscat de frontignan, entre la nouaison et la maturite, pendant deux annees. Les teneurs en carotenoides des baies a veraison et a maturite ont ete determinees par chromatographie liquide a haute performance et les teneurs en composes libres et lies de l'arome, des baies a maturite et des vins, par chromatographie en phase gazeuse. La modification quantitative de l'environnement lumineux des grappes, artificiellement sous des caches interceptant 90% de l'energie solaire et naturellement pa

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Kruger, Daniel Hendrik Michau. "The role of cover crops with biofumigation potential for the suppression of plant-parasitic nematodes in vineyards." Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85702.

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Thesis (MSc)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: Plant-parasitic nematodes, consisting of a wide range of species, can cause severe economic losses in most agricultural food crops. Meloidogyne spp. (root-knot nematodes), Criconemoides xenoplax (ring nematode), Xiphinema index (dagger nematode) and Pratylenchus spp. (lesion nematodes) are some of the economically important plant-parasitic nematodes that pose a threat to viticulture and other perennial crops in South Africa. Worldwide there is ever-increasing pressure on pre-plant synthetic soil fumigants and post-plant nem

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Strandqvist, Carl. "The Functionalization of Epitaxial Graphene on SiC with Nanoparticles towards Biosensing Capabilities." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-120502.

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Graphene has been shown to be very powerful as a transducer in many biosensor applications due to its high sensitivity. This enables smaller surfaces and therefore less material consumption when producing sensors and concequently cheaper and more portable sensors compared to the commercially available sensors today. The electrical properties of graphene are very sensitive to gas exposure why presence of molecules or small changes in concentration could easily be detected when using graphene as a sensing layer. Graphene is sensitive towards many molecules and in order to detect and possibly ide

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Pelvillain, Cyril. "Système d'encapsulation multicouche pour la gradation de potentiel dans les modules de puissance : apport des matériaux nanocomposites à conductivité contrôlée." Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30221/document.

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De nos jours, une gestion optimale de l'énergie électrique est devenue un enjeu majeur. La conversion de l'énergie entre une source et sa charge est réalisée par un élément central : le convertisseur statique utilisé aussi bien pour des faibles puissances (quelques Watts) que pour des très fortes (plusieurs MWatt). La brique élémentaire est la cellule de commutation constituée de semi-conducteurs de puissance (à commutation commandée ou spontanée) généralement réunis au sein d'un " module de puissance ". La nécessaire réduction des volumes dans certaines applications (comme les systèmes embarq

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El, Darra Nada. "Les composés phénoliques des raisins : étude du potentiel qualitatif et des procédés émergeants d'extraction." Thesis, Compiègne, 2013. http://www.theses.fr/2013COMP2060/document.

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Ce travail porte sur l’amélioration de l’extraction des composés phénoliques à partir des raisins tout au long de la chaîne de la vinification en rouge. La qualité des vins rouges est en grande partie déterminée par les composés phénoliques. Parmi les composés phénoliques, les anthocyanes, qui sont responsables de la couleur, et les tanins, à l’origine de la sensation d’astringence. Pour augmenter la quantité des composés phénoliques présents dans le vin, un développement des procédés permettant d’améliorer la diffusion des composés phénoliques durant la vinification en rouge doit être mis en

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Wang, Yan-Jiang, and yanjiang_wang@tmmu edu cn. "Clearance of amyloid-beta in Alzheimer's disease: To understand the pathogenesis and develop potential therapies in animal models." Flinders University. School of Medicine, 2010. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20100419.124325.

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Alzheimer's disease (AD) is the most common cause of dementia. No strong disease-modifying treatments are currently available. Amyloid-beta peptide (Abeta) appears to play a pivotal role in the pathogenesis of AD. We focused our interest on revealing the pathogenesis of the disease and developing novel therapeutic modalities. The thesis consists of three projects: 1. Prevention of AD by intramuscular delivery of an anti-Abeta single chain antibody (scFv) gene: Immunotherapy is effective in removing brain Abetazbut was associated with detrimental effects. In the present study, the gene of an

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Li, Yuting. "Simulations and Electronic Structure of Disordered Silicon and Carbon Materials." Ohio University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1395410498.

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Maus, Aaron. "Formulation of Hybrid Knowledge-Based/Molecular Mechanics Potentials for Protein Structure Refinement and a Novel Graph Theoretical Protein Structure Comparison and Analysis Technique." ScholarWorks@UNO, 2019. https://scholarworks.uno.edu/td/2673.

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Proteins are the fundamental machinery that enables the functions of life. It is critical to understand them not just for basic biology, but also to enable medical advances. The field of protein structure prediction is concerned with developing computational techniques to predict protein structure and function from a protein’s amino acid sequence, encoded for directly in DNA, alone. Despite much progress since the first computational models in the late 1960’s, techniques for the prediction of protein structure still cannot reliably produce structures of high enough accuracy to enable desired a

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Wang, Jianren. "Nanostructured Redox-Active Mesoporous Silica Films Based on An Electron-Hopping Mechanism : Charge Transfer Behaviors And Energy Storage Potentials." Electronic Thesis or Diss., Université de Lorraine, 2020. http://www.theses.fr/2020LORR0216.

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Un nouveau type de matériaux de stockage d'énergie à base de silice fonctionnant avec un mécanisme de saut d'électrons a été préparé en combinant une méthode d'auto-assemblage électrochimique (EASA) et une réaction de clic d'azide-alcyne catalysée par le cuivre (CuAAC). Les centres actifs redox (molécules de ferrocène ou de cobaltocénium) répartis à la surface du film de silice peuvent directement commuter les électrons par le biais du processus de saut d'électrons. Les résultats démontrent que ce mécanisme de transfert de charge est capable de fournir un taux de transfert d'électrons rapide m

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Alonso, Andre Chein. "Delineamento e avaliação de corredores lineares multi-hábitat : estudo de caso com bugio-ruivo (Alouatta clamitans) em mosaico urbano-rural." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2010. http://hdl.handle.net/10183/30203.

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A fragmentação de habitats em muitos casos limita o potencial de dispersão das espécies. Por esta razão, muitas iniciativas visando à conservação de espécies em paisagens fragmentadas envolvem o delineamento de corredores ecológicos entre manchas de hábitat. Neste trabalho, foi modelado um sistema de corredores entre manchas de mata remanescentes no mosaico urbano-rural de uma grande cidade no sul do Brasil (Porto Alegre, RS), tendo como organismo focal o primata Alouatta clamitans (bugio-ruivo) que está ameaçado de extinção. Nossos objetivos específicos são (a) demonstrar a importância dá con

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Panos, Konstantinos [Verfasser], and Klaus [Akademischer Betreuer] Klitzing. "Current distribution and Hall potential landscape within the quantum Hall effect in graphene and towards the breakdown in a (Al,Ga)As heterostructure / Konstantinos Panos. Betreuer: Klaus Klitzing." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2014. http://d-nb.info/1053653956/34.

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Monroy, José Antonio Sanchez. "Teoria quântica em uma subvariedade: Efeitos clássicos, quânticos e térmicos." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-08022017-095810/.

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O problema de como descrever a dinâmica efetiva de partículas ou campos confinados a um espaço-tempo de baixa dimensão é de interesse em muitas áreas da física. Vários métodos foram propostos na literatura para atacar este problema. Recentemente, foram relatadas algumas evidências experimentais que são consistentes com a chamada abordagem de potencial confinante. À luz destes resultados, o objetivo desta tese é o de construir uma teoria quântica para partículas confinadas em uma subvariedade, imersa em um espaço-tempo plano, empregando o cenário conceitual da abordagem de potencial confinante.

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