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12 results on '"Barrat, J.-A."'

1. Morpho-functional study of extant canids with application to the European Neolithic

Author

Colline Brassard, Rose-Marie Arbogast, Adrian Bălăşescu, Barrat, J., Céline Bemilli, Adina Boroneanţ, Cecile Callou, Fabien Convertini, Cornette, R., Fleming, T., Muriel Gandelin, Guintard, C., Monchatre-Leroy, E., Anne Tresset, Stéphanie Bréhard, Anthony Herrel, Archéozoologie, archéobotanique : sociétés, pratiques et environnements (AASPE), Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS), Mécanismes Adaptatifs et Evolution (MECADEV), Archéologie et histoire ancienne : Méditerranée - Europe (ARCHIMEDE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS), Romanian Academy, Institut national de recherches archéologiques préventives (Inrap), Archéologie des Sociétés Méditerranéennes (ASM), Université Paul-Valéry - Montpellier 3 (UPVM)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC), Travaux et recherches archéologiques sur les cultures, les espaces et les sociétés (TRACES), and École des hautes études en sciences sociales (EHESS)-Université Toulouse - Jean Jaurès (UT2J)-Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

2. Morpho-functional study of extant canids: application to the Romanian Neolithic

Author

Colline Brassard, Adrian Bălăşescu, Barrat, J., Adina Boroneanţ, Fleming, T., Guintard, C., Monchatre-Leroy, E., Anne Tresset, Cecile Callou, Cornette, R., Stéphanie Bréhard, Anthony Herrel, Archéozoologie, archéobotanique : sociétés, pratiques et environnements (AASPE), Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS), Mécanismes Adaptatifs et Evolution (MECADEV), and Romanian Academy

Subjects
[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

3. Commensalism and domesticity in canids from the old world from the Late-Glacial to Holocene

Author

Brassard, Colline, Bréhard, Stéphanie, Callou, Cécile, Cornette, R., Tresset, Anne, Bălăşescu, Adrian, Guintard, C., Monchatre-Leroy, E., Barrat, J., Fleming, T., Herrel, Anthony, Archéozoologie, archéobotanique : sociétés, pratiques et environnements (AASPE), Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS), Mécanismes Adaptatifs et Evolution (MECADEV), Romanian Academy, and Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)

Subjects
[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

4. Heterogeneities in amorphous systems under shear

Author

Barrat, J. -L., Lemaitre, Anael, Laboratoire de Spectrométrie Physique (LSP), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Rhéophysique, Laboratoire Navier (navier umr 8205), and École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)

Subjects
Condensed Matter - Materials Science, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences
Abstract

The last decade has seen major progresses in studies of elementary mechanisms of deformation in amorphous materials. Here, we start with a review of physically-based theories of plasticity, going back to the identification of "shear-transformations" as early as the 70's. We show how constructive criticism of the theoretical models permits to formulate questions concerning the role of structural disorder, mechanical noise, and long-ranged elastic interactions. These questions provide the necessary context to understand what has motivated recent numerical studies. We then summarize their results, show why they had to focus on athermal systems, and point out the outstanding questions., Comment: Chapter of "Dynamical Heterogeneities in glasses, colloids and granular materials", Eds.: L. Berthier, G. Biroli, J-P Bouchaud, L. Cipelletti and W. van Saarloos (Oxford University Press, to appear), more info at http://w3.lcvn.univ-montp2.fr/~lucacip/DH_book.htm

Published
2010

5. Influence of fox behaviour on infection by Echinococcocus multilocularis in urban and suburban areas of Nancy, France: impact of food habits and preliminary result of red foxes movements

Author

Robardet , Emmanuelle, Giraudoux , Patrick, Caillot , C., Cliquet , Florence, Augot , Denis, Barrat , J., Laboratoire Chrono-environnement ( LCE ), Université Bourgogne Franche-Comté ( UBFC ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Franche-Comté ( UFC ), Laboratoire d'études et de recherches sur la rage et la pathologie des animaux sauvages, AFSSA, Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), and Agence Française de Sécurité Sanitaire des Aliments (AFSSA)

Subjects
[ SDV.EE.IEO ] Life Sciences [q-bio]/Ecology, environment/Symbiosis, [SDV.EE.IEO]Life Sciences [q-bio]/Ecology, environment/Symbiosis
Published
2007

6. Modeling thermal conductivity and collective effects in a simple nanofluid

Author

Vladkov, Mihail, Barrat, J.-L., Laboratoire de Physique de la Matière Condensée et Nanostructures (LPMCN), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon

Subjects
Condensed Matter - Materials Science, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences
Abstract

Molecular dynamics simulations are used to model the thermal properties of a fluid containing solid nanoparticles (nanofluid). The flexibility of molecular simulation allows us to consider the effects of particle mass, particle-particle and particle-fluid interaction and that of the spatial distribution of the particles on the thermal conductivity. We show that the heat conductivity of a well dispersed nanofluid is well described by the classical Maxwell Garnett equation model. In the case of particle clustering and strong inter particle interactions the conductivity can be again described by effective medium calculation taking into account the aspect ratio of the cluster. Heat transfer is increased when particles are aligned in the direction of the temperature gradient. This kind of collective effects could be a first step to understand the substantial increase in the conductivity observed in some experiments., Comment: Journal of Computational and Theoretical Nanoscience

Published
2006

7. Microscopic elasticity of complex systems

Author

Barrat, J. -L., Laboratoire de Physique de la Matière Condensée et Nanostructures (LPMCN), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon

Subjects
Condensed Matter - Materials Science, Statistical Mechanics (cond-mat.stat-mech), [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, [PHYS.COND.CM-SM]Physics [physics]/Condensed Matter [cond-mat]/Statistical Mechanics [cond-mat.stat-mech], Condensed Matter - Statistical Mechanics
Abstract

Lecture Notes for the Erice Summer School 2005 Computer Simulations in Condensed Matter: from Materials to Chemical Biology. Perspectives in celebration of the 65th Birthday of Mike Klein organized by Kurt Binder, Giovanni Ciccotti and Mauro Ferrario

Published
2006

8. Continuum limit of amorphous elastic bodies (II): Response to a point source

Author

Leonforte, F., Tanguy, Arnaud, Wittmer, J.P., Barrat, J.-L., Laboratoire de Physique de la Matière Condensée et Nanostructures (LPMCN), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Institut Charles Sadron (ICS), Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Matériaux et nanosciences d'Alsace (FMNGE), and Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Condensed Matter - Materials Science, Statistical Mechanics (cond-mat.stat-mech), 46.25.-y Static elasticity, 72.80.Ng Disordered solids, 83.80.Fg Granular solids, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, [PHYS.COND.CM-SM]Physics [physics]/Condensed Matter [cond-mat]/Statistical Mechanics [cond-mat.stat-mech], Condensed Matter - Statistical Mechanics
Abstract

The linear response of two-dimensional amorphous elastic bodies to an external delta force is determined in analogy with recent experiments on granular aggregates. For the generated forces, stress and displacement fields, we find strong relative fluctuations of order one close to the source, which, however, average out readily to the classical predictions of isotropic continuum elasticity. The stress fluctuations decay (essentially) exponentially with distance from the source. Only beyond a surprisingly large distance, $b \approx 30$ interatomic distances, self-averaging dominates, and the quenched disorder becomes irrelevant for the response of an individual configuration. We argue that this self-averaging length $b$ sets also the lower wavelength bound for the applicability of classical eigenfrequency calculations.Particular attention is paid to the displacements of the source, allowing a direct measurement of the local rigidity. The algebraic correlations of these displacements demonstrate the existence of domains of slightly different rigidity without, however, revealing a characteristic length scale, at least not for the system sizes we are able to probe., Comment: 27 pages, 10 figures

Published
2004
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9. Comparison of the efficacy of the antirabies vaccines used for foxes in France

Author

Masson, E, Aubert, MFA, Barrat, J, Vuillaume, P, and Revues Inra, Import

Subjects
[SDV.IMM] Life Sciences [q-bio]/Immunology, [SDV.BA] Life Sciences [q-bio]/Animal biology, [SDV.BA]Life Sciences [q-bio]/Animal biology, [SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, [SDV.BC]Life Sciences [q-bio]/Cellular Biology, [SDV.GEN.GA] Life Sciences [q-bio]/Genetics/Animal genetics, [SDV.BC.IC] Life Sciences [q-bio]/Cellular Biology/Cell Behavior [q-bio.CB], [SDV.BBM.BM] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, [SDV.GEN.GA]Life Sciences [q-bio]/Genetics/Animal genetics, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, [SDV.BC.IC]Life Sciences [q-bio]/Cellular Biology/Cell Behavior [q-bio.CB], [SDV.IMM]Life Sciences [q-bio]/Immunology, [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, [SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], [SDV.BC] Life Sciences [q-bio]/Cellular Biology, [SDV.MP] Life Sciences [q-bio]/Microbiology and Parasitology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
1996

10. Écologie des comportements de transmission de la rage

Author

Artois, Marc, Aubert, M, Blancou, J, Barrat, J, Poulle, Ml, Stahl, P, and Revues Inra, Import

Subjects
[SDV.IMM] Life Sciences [q-bio]/Immunology, [SDV.BA] Life Sciences [q-bio]/Animal biology, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, [SDV.GEN.GA] Life Sciences [q-bio]/Genetics/Animal genetics, [SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], [SDV.BC.IC] Life Sciences [q-bio]/Cellular Biology/Cell Behavior [q-bio.CB], [SDV.BBM.BM] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, [SDV.BC] Life Sciences [q-bio]/Cellular Biology, [SDV.MP] Life Sciences [q-bio]/Microbiology and Parasitology, ComputingMilieux_MISCELLANEOUS
Published
1991

11. Transmission et pathogénie chez le renard roux de deux isolats à dix ans d'intervalle du virus de la rage vulpine

Author

Aubert, Mfa, Blancou, J, Barrat, J, Artois, Marc, Barrat, M-J, and Revues Inra, Import

Subjects
[SDV.IMM] Life Sciences [q-bio]/Immunology, [SDV.BA] Life Sciences [q-bio]/Animal biology, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, [SDV.GEN.GA] Life Sciences [q-bio]/Genetics/Animal genetics, [SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], [SDV.BC.IC] Life Sciences [q-bio]/Cellular Biology/Cell Behavior [q-bio.CB], [SDV.BBM.BM] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, [SDV.BC] Life Sciences [q-bio]/Cellular Biology, [SDV.MP] Life Sciences [q-bio]/Microbiology and Parasitology, ComputingMilieux_MISCELLANEOUS
Published
1990

12. Granular media: some ideas from statistical physics

Author

Bouchaud, J.-P., Service de physique de l'état condensé (SPEC - UMR3680), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Barrat J.-L., Feigelman M., Kurchan J., and Dalibard J.

Subjects
[PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other], [PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph]
Abstract

URL: http://www-spht.cea.fr/articles/s02/137; These lecture notes cover the statics and glassy dynamics of granular media. Most of the lectures were in fact devoted to `force propagation' models. We discuss the experimental and theoretical motivations for these approaches, and their conceptual connections with Edwards' thermodynamical analogy. One of the distinctive feature of granular media (common to many other `jammed' systems) is indeed the large number of metastable states that are macroscopically equivalent. We present in detail the (scalar) $q$-model and its tensorial generalization, that aim at modelling the existence of force chains and arching effects without introducing any displacement field. The contrast between the hyperbolic equations obtained within this line of thought and elliptic (elastic) equations is emphasized. The rôle of disorder on these hyperbolic equations is studied in details using perturbative and diagrammatic methods. Recent (strong disorder) force chain network models are reviewed, and compared with the experimental determination of the force `response function' in granular materials. We briefly discuss several issues (such as isostaticity and generic marginality) and open problems. At the end of these notes, we also discuss the basic dynamical properties of {\it weakly tapped} granular assemblies, and stress the phenomenological analogies with other glassy materials. Simple models that account for slow compaction and dynamical heterogeneities are presented, that are inspired by `free-volume' ideas and Edwards' assumption. A connection with the theory of fluctuating random surfaces, also noted recently by Castillo et al., is suggested. Finally, we discuss how the `trap model' can be adapted to granular materials, such that more subtle `memory' effects can be accounted for.

Published
2003

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