Search results for "Mali"
showing 10 items of 3900 documents
Self-organization of incoherent optical waves : Condensation, thermalization and repolarization
2019
The subject of this thesis concerns the study of phenomena of self-organization of incoherentoptical waves. This work is essentially theoretical and numerical and relies on different formalisms of waveturbulence theory, the Hamiltonian singularities, and different experiments.The first part of the thesis deals with the irreversible processes of thermalization and condensation ofincoherent waves. The phenomenon of condensation is characterized by the formation of a large scale co-herent structure (condensate) that remains immersed in a sea of small scale fluctuations (uncondensedparticules). In spite of the large propagation lengths required to reach the condensed equilibrium state, wehave i…
Etude des effets collisionnels dans les molécules tétraédriques. Applications au méthane perturbé par l'argon
1996
This thesis is devoted to the study of relaxational and collisional line-broadening processes in the first vibrational polyads of tetrahedral molecules. In a first part, the particular internal dynamics of such molecules is discussed. The second chapter reviews the literature on phenomena induced by intermolecular interactions involving this type of molecules. More theoretical aspects are developed in the second part. The so-called tetrahedral tensorial formalism adapted to the construction of Hamiltonians and transition moments of tetrahedral molecules is described. Main features of the infrared line-shapes theories and of semi-classical line-broadening and line-shifting calculations are a…
Malignant transformation of presacral mass in Currarino syndrome
2019
International audience
Pentamidine rescues contractility and rhythmicity in a Drosophila model of myotonic dystrophy heart dysfunction
2015
Up to 80% of individuals with myotonic dystrophy type 1 (DM1) will develop cardiac abnormalities at some point during the progression of their disease, the most common of which is heart blockage of varying degrees. Such blockage is characterized by conduction defects and supraventricular and ventricular tachycardia, and carries a high risk of sudden cardiac death. Despite its importance, very few animal model studies have focused on the heart dysfunction in DM1. Here, we describe the characterization of the heart phenotype in a Drosophila model expressing pure expanded CUG repeats under the control of the cardiomyocyte-specific driver GMH5-Gal4. Morphologically, expression of 250 CUG repeat…
Zinc isotopes in Late Pleistocene fossil teeth from a Southeast Asian cave setting preserve paleodietary information
2020
Significance Dietary habits, especially meat consumption, represent a key aspect in the behavior and evolution of fossil hominin species. Here, we explore zinc (Zn) isotope ratios in tooth enamel of fossil mammals. We show discrimination between different trophic levels and demonstrate that Zn isotopes could prove useful in paleodietary studies of fossil hominin, or other mammalian species, to assess their consumption of animal versus plant resources. We also demonstrate the high preservation potential of pristine diet-related Zn isotope ratios, even under tropical conditions with poor collagen preservation, such as the studied depositional context in Southeast Asia. However, assessing the …
Information Spatiale et Archéologie
2011
L'information archéologique est spatiale par nature. Quels que soient l'échelle (fouille, habitat, ville, région), le contexte (urbain, rural), le thème (peuplement, territoires, matières premières, réseaux d'échanges, culture matérielle...) ou la démarche (terrain, documentation), la localisation est une donnée fondamentale et la production de documents (carto) graphiques est une constante. Pour autant, si le positionnement dans l'espace est un préliminaire indispensable, il ne constitue pas à lui seul une réflexion sur la dimension spatiale des questions archéologiques. L'application des méthodes de l'analyse spatiale est intervenue en archéologie dès les années 1970. Elle est maintenant …
Formalization of scientific process and conceptual modelling for the study of territorial and products distribution dynamics (ArchaeDyn II programme)
2012
International audience; The ArchaeDyn team has investigated territorial dynamics by comparing areas over long time spans between the Neolithic and Modern times. Datasets on various themes have been shared and indicators and analytical models produced. This paper presents both the formalization of the scientific process used in the ArchaeDyn programme and a conceptual model of the systems and components so that synchronic and diachronic comparisons can be made. The aim is to clarify the transition from an archaeological feature (a site or an artefact) or a recording unit (survey area) as the input, to the characterization of spaces describing a system as the output. The approach is described…
La question de l'animalité, pivot du matérialisme et de la définition de l'humain chez Cabanis
2010
International audience
Usages politiques de l'animalité
2008
Avilir le corps de l'adversaire : politiques de l'animalisation en France, 1ère moitié du XIXe siècle
2010
International audience