Literatura científica selecionada sobre o tema "Phénomènes de concentration"
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Artigos de revistas sobre o assunto "Phénomènes de concentration"
Marcoux, Nancy, Lucien Tessier e Yves Bégin. "Répartition estivale du dioxyde d'azote et de l'ozone dans une vallée alpine, Chamonix, France". Géographie physique et Quaternaire 52, n.º 2 (2 de outubro de 2002): 255–64. http://dx.doi.org/10.7202/004848ar.
Texto completo da fonteProulx, Marc-Urbain. "Les pôles dans leur espace périphérique". Revue Organisations & territoires 29, n.º 1 (12 de maio de 2020): 27–32. http://dx.doi.org/10.1522/revueot.v29n1.1121.
Texto completo da fonteDionne, Jean-Claude. "Formes et phénomènes périglaciaires en Jamésie, Québec subarctique". Géographie physique et Quaternaire 32, n.º 3 (18 de janeiro de 2011): 187–247. http://dx.doi.org/10.7202/1000303ar.
Texto completo da fonteDorioz, J. M., P. Quetin, J. A. Lazzarotto, J. P. Bosse e J. P. Moille. "Bilan du phosphore dans un bassin versant du lac Léman : Conséquences pour la détermination de l'origine des flux exportés". Revue des sciences de l'eau 17, n.º 3 (12 de abril de 2005): 329–54. http://dx.doi.org/10.7202/705537ar.
Texto completo da fonteTran, Man Van, Nicolas Sarrut e Patrick Ozil. "MICRO-EXTRACTEUR POUR CONCENTRATION AND DETERMINATION DES IONS DANS L’EAU". Science and Technology Development Journal 14, n.º 2 (30 de junho de 2011): 96–106. http://dx.doi.org/10.32508/stdj.v14i2.1949.
Texto completo da fonteFAVERDIN, P., J. P. DULPHY, J. B. COULON, R. VÉRITÉ, J. P. GAREL, J. ROUEL e B. MARQUIS. "Les phénomènes de substitution fourrages-concentrés chez la vache laitière". INRAE Productions Animales 5, n.º 2 (29 de maio de 1992): 127–35. http://dx.doi.org/10.20870/productions-animales.1992.5.2.4227.
Texto completo da fonteGuillée, Philippe. "Les Européens et les médias". Tocqueville Review 11, n.º 1 (janeiro de 1990): 275–83. http://dx.doi.org/10.3138/ttr.11.1.275.
Texto completo da fonteGuillée, Philippe. "Les Européens et les médias". Tocqueville Review 11 (janeiro de 1990): 275–83. http://dx.doi.org/10.3138/ttr.11.275.
Texto completo da fonteZug, M., e L. Phan. "Horus, un modèle conceptuel de simulation de la pollution en réseau d'assainissement - structure et validation". Revue des sciences de l'eau 12, n.º 4 (12 de abril de 2005): 643–60. http://dx.doi.org/10.7202/705370ar.
Texto completo da fonteChouari, Walid. "Pluviométries exceptionnelles et occupation des sols mal maîtrisée : l'exemple d'inondations des 23 et 29 septembre 2016 dans le Sahel de Sousse (Tunisie centre-orientale)". La Houille Blanche, n.º 1 (fevereiro de 2020): 50–59. http://dx.doi.org/10.1051/lhb/2019062.
Texto completo da fonteTeses / dissertações sobre o assunto "Phénomènes de concentration"
Druet, Olivier. "Asymptotiques géométriques, phénomènes de concentration et inégalités optimals". Cergy-Pontoise, 2001. http://www.theses.fr/2001CERG0134.
Texto completo da fonteWe study sharp Sobolev inequalities on manifolds. The limit case is the Cartan-Hadamard conjecture. A study of elliptic concentration phenomena is also done
Mesmar, Hussein. "Phénomènes de concentration pour des équations elliptiques surcritiques". Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0338.
Texto completo da fonteIn this manuscript, we present several aspects of the resolution of nonlinear elliptic partial differential equations with supercritical Sobolev exponent. We are considering the context of a compact Riemannian manifolds and we fix a subgroup of the isometries of this manifold. Taking a problem invariant under the action of this group permits to get a reasonable supercritical problem. More precisely, if the action of such a group is free, the quotient is also a smooth manifold: this transforms a supercritical problem on the initial manifold into a critical problem on the quotient manifold. Therefore, under this free-action hypothesis, the problem is artificially supercritical. In our work, we consider the more intricate case of a group that does not act freely, so that the quotient space is not necessarily a manifold, and the preceding method fails. We make explicit hypothesis on the group to be able to perform some analysis. In the first part, we compute the best constant in the Hardy-Sobolev supercritical inequalities with invariance under such a group: this constant depends on the corresponding Euclidean best constant. This constant allows us to get solutions to a supercritical Hardy-Sobolev equation with perturbation via the Mountain-Pass Lemma of Ambrosetti-Rabinowitz. In the second part, we perform an analysis of the concentration phenomenon associated with a supercritical problem, still invariant under the action of an isometry group. The main novelty we have to face is that we have to work on a piece of the quotient which is a manifold, but it has a boundary, and we do not have conditions like Dirichlet or Neumann here. However, we overcome this problem by proving a concentration of the mass that allows to get a good control far from the concentration orbit. Under suitable nondegeneracy assumptions, we show that the concentration orbit converges very fast to a limiting orbit. This allows to get a relation between the potential and the geometry at the concentration orbit, so that we get a localization of the concentration. Despite they are geometric in nature, our technique enjoy applications to the more classical context of nonlinear equations on a domain of the flat space
Mirrahimi, Sepideh. "Phénomènes de concentration dans certaines EDPs issues de la biologie". Paris 6, 2011. http://www.theses.fr/2011PA066165.
Texto completo da fonteVanderschaeve, Frédérique. "Influence de l'azote en forte concentration sur les phénomènes de précipitation dans les aciers". Lille 1, 1993. http://www.theses.fr/1993LIL10120.
Texto completo da fonteCini, Emmanuel. "Contribution à l'étude de phénomènes de germination, de démixtion et de métastabilité morphologique". Grenoble INPG, 1997. http://www.theses.fr/1997INPG0004.
Texto completo da fonteA thermodynamic approach of homogeneous nucleation in binary liquid alloys is presented. It postulates that concentration fluctuations in the liquid state can provide favoured sites for nucleation. This mechanism considers local chemical order fluctuations and structure fluctuations as separated events. A statistical analysis shows that the efficiency of the transformations of liquid fluctuations into solid nuclei increases with the amount of undercooling and reaches a maximum for a relative level of undercooling equal to 2/3. Spinodal decomposition is also considered. Particular emphasis is laid upon the topological aspects of phase separation, which provide evidence for a continuous transition from metastability to instability in the case of short range atomic interactions. Furthermore, a critical size for the mother phase appears, below which spinodal decomposition is thermodynamically impossible. This critical size, brought to the fore in the frame of the capillary formalism, becomes identical to that obtained by the continuous theories of phase transitions when physico-chemical constraints at the interface are relaxed. The stabilising effect of the mother phase size is also demonstrated for nucleation. Finally, grain refinement phenomena encountered in non equilibrium solidification processes are reviewed. In addition to a critical assessment of the main explanatory mechanisms, a new approach is proposed, which is based on the kinetic undercooling at the solidification front. At high supercooling levels, planar front stabilisation may be preceded by a transient unstable regime which could cause the solidification structure to be refined. Similar structures can also result when kinetic anisotropy interferes with surface tension anisotropy. Highly undercooled metallic samples processed in the 48 meter high Grenoble drop tube undergo a recrystallization phenomenon that is likely related to the existence of metastable phases. Besides, morphological instabilities are noticeable, which support the kinetic approach
Calesso, Teixeira Elba. "Étude des phénomènes relatifs à la concentration et à la lixiviation des éléments-traces dans les cendres volantes produites lors de la combustion du charbon pulvérisé". Vandoeuvre-les-Nancy, INPL, 1988. http://www.theses.fr/1988NAN10024.
Texto completo da fonteAissaoui, Rached. "Contribution à l'étude des couches minces de l'alliage germanium-sélénium, avec une concentration de germanium inférieure à trente-trois pour cent : élaboration, relaxation, conduction". Rouen, 1986. http://www.theses.fr/1986ROUES046.
Texto completo da fonteJing, Ruihua. "Phénomène de concentration pour des équations avec nonlinéarités surcritiques". Paris 12, 2005. https://athena.u-pec.fr/primo-explore/search?query=any,exact,990003940560204611&vid=upec.
Texto completo da fonteMahmoudi, Fethi. "Phénomène de concentration pour desproblèmes non linéaires issus de la géométrie". Phd thesis, Université Paris XII Val de Marne, 2005. http://tel.archives-ouvertes.fr/tel-00011695.
Texto completo da fontecourbure principale de l'hyersurface). Nous donnons dans cette thèse quelques résultats d'existence de telles hypersurfaces. En outre, les exemples que nous construisons mettent en évidence un phénomène de concentration le long de sous variétés, phénomène
associé à un phénomène de résonance qui rend l'analyse de ces objets particulièrement délicate et que l'on rencontre dans l'étude de nombreux autres problèmes non-linéaires, équation de Schrödinger non linéaire, problème de perturbations singulière,
système de réaction-diffusion,...
Mahmoudi, Fethi. "Phénomène de concentration pour des problèmes non linéaires issus de la géométrie". Paris 12, 2005. https://athena.u-pec.fr/primo-explore/search?query=any,exact,990002286080204611&vid=upec.
Texto completo da fonteIn this thesis, we study concentration phenomenom for geometrical elliptic equations : the existence of constant r-curvature hypersurfaces in Riemannian manifolds. We give some results of existence of such submanifolds. Moreover, the examples we give present a phenomenom of concentration along submanifolds, which is associated with a resonance phenomenom. This makes particulary delicate the analysis of these objects and which shows up in the study of many other nonlinear problems : nonlinear Schrödinger equations, singularly perturbed problems,. .
Capítulos de livros sobre o assunto "Phénomènes de concentration"
PRAT, Marc. "Évaporation, transport et cristallisation". In Cristallisation de sels en milieu poreux, 61–90. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9114.ch3.
Texto completo da fonteCollini, S., S. Noel, S. Bonte, N. Metais, E. Bodart, F. Peladan e S. Dupire. "Utilisation d’1802 pour évaluer l’impact du phénomène d’oxydation durant le brassage et le stockage de la bière". In European Brewery Convention, 535–44. Oxford University PressOxford, 1997. http://dx.doi.org/10.1093/oso/9780199636907.003.0064.
Texto completo da fonteRelatórios de organizações sobre o assunto "Phénomènes de concentration"
Royer, Annie, Patrick Mundler e Julie Ruiz. L’évolution du secteur bioalimentaire sur les territoires du Québec. Identification des principales dynamiques et facteurs explicatifs. CIRANO, fevereiro de 2023. http://dx.doi.org/10.54932/gtkf5491.
Texto completo da fonte