Philippe JEAN-PIERRE

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2006
• Auteurs : Philippe Moulis
• Organismes : Religions et croyances LAboratoire de Recherche Historique Rhône-Alpes - UMR5190
• Publié dans Bulletin historique du Haut-Pays le 10/12/2019

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2006
• Auteurs : Éric GirardPierre LegrandOlga RoudenkoLucile RoussierPatrick GourhantJonathan GibelinDidier DalleMajid OunsyAndrew William ThompsonOlof SvenssonMarie-Odile CordierSophie RobinRené QuiniouJean-Philippe Steyer
• Organismes : Synchrotron SOLEIL Synchrotron SOLEIL Synchrotron SOLEIL Synchrotron SOLEIL Synchrotron SOLEIL Synchrotron SOLEIL Synchrotron SOLEIL Synchrotron SOLEIL Synchrotron SOLEIL European Synchrotron Radiation Facility Institut de Recherche en Informatique et Systèmes Aléatoires Institut de Recherche en Informatique et Systèmes Aléatoires Institut de Recherche en Informatique et Systèmes Aléatoires Laboratoire de Biotechnologie de l'Environnement [Narbonne]
• Publié dans Acta crystallographica Section D : Structural biology [1993-...] le 28/10/2020

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Résumé : X-ray diffraction is an extremely important tool for structure determination of biological macromolecules, to the extent that currently around 85% of Protein Data Bank entries result from X-ray measurements. Many of these structure determinations use synchrotron radiation for data collection. This article aims to give synchrotron users an overview of the functioning of a synchrotron beamline and how the performance of various instruments combines to allow the collection of diffraction data.

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2006
• Auteurs : Philippe DrobinskiJean-Luc RedelspergerChristophe Pietras
• Organismes : Service d'aéronomie Centre national de recherches météorologiques Laboratoire d’Optique Atmosphérique - UMR 8518
• Publié dans Geophysical Research Letters le 25/10/2020

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Résumé : In numerical modelling, far from regions of large gradients, the resolved scales contain most of the energy of turbulent motion whilst on subgrid scales (SGS), motions are less energetic. However, SGS contribution becomes larger than the resolved part near the surface. Recent studies have shown that near-surface turbulence anisotropy has a dramatic effect on the mixing length to be used in SGS models which are generally derived for free-stream isotropic turbulence or use the standard Prandtl mixing length z. Using the flux measurements collected at the SIRTA observatory located near Paris (France), this paper shows that a SGS model suitable for both the surface layer and free-stream turbulence must discard the Prandtl mixing length and account for near-surface turbulence anisotropy. It also shows that such an SGS scheme, which is suited for all numerical models of the atmosphere, improves the representation of planetary boundary layer processes in most stability conditions.

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Fichiers liés : 2006GL027062.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2006
• Auteurs : Michael ZolenskyThomas ZegaHajime YanoSue WirickAndrew WestphalMike WeisbergIris WeberJack WarrenMichael VelbelAkira TsuchiyamaPeter TsouAlice ToppaniNaotaka TomiokaKazushige TomeokaNick TeslichMitra TaheriJean SusiniRhonda StroudThomas StephanFrank StadermannChristopher SneadSteven SimonAlexandre SimionoviciThomas SeeFrançois RobertFrans RietmeijerWilliam RaoMurielle PerronnetDimitri PapanastassiouKyoko OkudairaKazumasa OhsumiIchiro OhnishiKeiko Nakamura-MessengerTomoki NakamuraSmail MostefaouiTakashi MikouchiAnders MeibomGraciela MatrajtMatthew A. MarcusHugues LerouxLaurence LemelleLoan LeAntonio LanzirottiFalko LangenhorstAlexander KrotLindsay KellerAnton KearsleyDavid JoswiakDamien JacobHope IshiiRalph HarveyKenji HagiyaLawrence GrossmanJeffrey GrossmanGiles GrahamMatthieu GounellePhilippe GilletMatthew GengeGeorge FlynnTristan FerroirStewart FallonDenton EbelZu Rong DaiPatrick CordierBenton ClarkMiaofang ChiAnna ButterworthDonald BrownleeJohn BridgesSean BrennanAdrian BrearleyJohn BradleyPierre BleuetPhil BlandRon Bastien
• Organismes : European Synchrotron Radiation Facility European Synchrotron Radiation Facility Laboratoire de Sciences de la Terre Institut d'Informatique et de Mathématiques Appliquées de Grenoble Laboratoire Environnement et Minéralurgie Laboratoire de Modélisation des Transferts dans l'Environnement Advanced Light Source [LBNL Berkeley] Laboratoire de Sciences de la Terre Laboratoire de Sciences de la Terre Laboratoire de Sciences de la Terre Laboratoire de structures et propriétés de l'état solide - UMR 8008
• Publié dans Science le 22/10/2020

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Résumé : The bulk of the comet 81P/Wild 2 (hereafter Wild 2) samples returned to Earth by the Stardust spacecraft appear to be weakly constructed mixtures of nanometer-scale grains, with occasional much larger (over 1 micrometer) ferromagnesian silicates, Fe-Ni sulfides, Fe-Ni metal, and accessory phases. The very wide range of olivine and low-Ca pyroxene compositions in comet Wild 2 requires a wide range of formation conditions, probably reflecting very different formation locations in the protoplanetary disk. The restricted compositional ranges of Fe-Ni sulfides, the wide range for silicates, and the absence of hydrous phases indicate that comet Wild 2 experienced little or no aqueous alteration. Less abundant Wild 2 materials include a refractory particle, whose presence appears to require radial transport in the early protoplanetary disk.

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• Type de publi. : Rapport
• Date de publi. : 01/01/2006
• Auteurs : Charles BergPierre DesmarezJohn R. EdwardsChristophe NosbonneXavier EngelsJean-Philippe FonsLeszek GilejkoLionel JacquotJean-Louis MeyerRafal TowalskiWillems Helmut
• Organismes : Université de Lorraine IAE Nancy School of Management

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2006
• Auteurs : Philippe LangevinPatrice RabizzoniPascal VéronJ.-P. Zanotti
• Organismes : Institut de Mathématiques de Toulon - EA 2134 Institut de Mathématiques de Toulon - EA 2134 Institut de Mathématiques de Toulon - EA 2134 Institut de Mathématiques de Toulon - EA 2134

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• Type de publi. : Ouvrage (y compris édition critique et traduction)
• Date de publi. : 01/01/2006
• Auteurs : Nicole AnquetilGilles BoquératPierre GentellePhilippe PelletierGabriel Weissberg
• Organismes : Environnement, Ville, Société Laboratoire Interdisciplinaire Solidarités, Sociétés, Territoires

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2006
• Auteurs : David AmitranoStéphane GaffetJean-Philippe MaletOlivier Maquaire
• Organismes : Laboratoire de Géophysique Interne et Tectonophysique Géoazur Institut de physique du globe de Strasbourg Littoral, Environnement, Télédétection, Géomatique
• Publié dans Geophysical Research Abstracts le 01/01/2003

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2006
• Auteurs : Philippe SteyerStéphane ValetteBernard ForestJean-Pierre MilletChristophe DonnetÉric Audouard
• Organismes : Matériaux, ingénierie et science [Villeurbanne] Laboratoire Hubert Curien Département Biomatériaux et Mécanique Plasticité, Endommagement et Corrosion des Matériaux Matériaux, ingénierie et science [Villeurbanne] Laboratoire Hubert Curien Laboratoire Hubert Curien
• Publié dans Surface Engineering le 31/10/2020

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Résumé : Marking is of prime importance in the field of biomaterials to allow the identification of surgical tools or implants. Markings are obtained under industrial conditions with a pulsed Nd:YAG laser on a X30C13 martensitic stainless steel. Depending on laser parameters, two modes of marking are considered: a surface oxidisation mode and a matter photoablation mode. Electrochemical behaviour, i.e. passive state, corrosion rate, resistance to pitting, is evaluated in Ringer's saline solution. Results are then explained on the basis of metallurgical modifications regarding the phases composition and the distribution of alloying elements. In oxidative regime, laser treatment drastically affects both microstructure and chemical composition. Specially, chromium depletion is measured in subsurface, leading to a loss of passive ability. In ablative mode the surface is transformed into a thin favourable layer of austenite. Moreover, the overall chromium distribution is little modified. Therefore, the passive character is maintained, but with nevertheless a shorter passive domain than base material one.

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2006
• Auteurs : Laurent PonsonHarold AuradouPhilippe ViéJ.P. Hulin
• Organismes : Fluides, automatique, systèmes thermiques Service de Physique et de Chimie des Surfaces et Interfaces Fluides, automatique, systèmes thermiques Laboratoire des matériaux et structures du génie civil Fluides, automatique, systèmes thermiques
• Publié dans Physical Review Letters le 02/11/2020

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Résumé : The geometry of post mortem rough fracture surfaces of porous glass ceramics made of sintered glass beads is shown experimentally to be self-affine with an exponent zeta=0.40 (0.04) remarkably lower than the 'universal' value zeta=0.8 frequently measured for many materials. This low value of zeta is similar to that found for sandstone samples of similar micro structure and is also practically independent on the porosity phi in the range investigated (3% < phi < 26%) as well as on the bead diameter d and of the crack growth velocity. In contrast, the roughness amplitude normalized by d increases linearly with phi while it is still independent, within experimental error, of d and of the crack propagation velocity. An interpretation of this variation is suggested in terms of a transition from transgranular to intergranular fracture propagation with no influence, however, on the exponent zeta.

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Fichiers liés : preprint.pdf

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