Philippe JEAN-PIERRE

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2010
• Auteurs : Cyrielle RoqueletDamien GarrotJean‐sébastien LauretC. VoisinValérie Alain-RizzoPhilippe RoussignolJacques A. DelaireEmmanuelle Deleporte
• Organismes : Laboratoire de Photonique Quantique et Moléculaire Laboratoire de Photonique Quantique et Moléculaire Laboratoire de Photonique Quantique et Moléculaire Laboratoire Pierre Aigrain Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires Laboratoire Pierre Aigrain Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires Laboratoire de Photonique Quantique et Moléculaire
• Publié dans Applied Physics Letters le 01/11/2020

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Résumé : We report on the quantum yield of excitation energy transfer in non-covalently bound nan- otube/porphyrin compounds. Evidence for energy transfer is gained from photoluminescence exci- tation experiments. We perform a quantitative evaluation of the transfer quantum yield in the case of (6,5) nanotubes through three independent methods : quantitative PLE measurements, evalu- ation of the luminescence quenching of the donor (porphyrin) and ultrafast transient absorption measurements. The latter shows a tremendous increase of the porphyrin recovery rate upon incor- poration in the compound. All these measurements consistently lead to an exceptional quantum yield efficiency.

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Fichiers liés : apl_roquelet2010.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2010
• Auteurs : Khalid AmrouchPhilippe RobionJean-Paul CallotOlivier LacombeJean-Marc DanielNicolas BellahsenJ.L. Faure
• Organismes : Institut des Sciences de la Terre de Paris Institut Français du Pétrole Laboratoire Géosciences et Environnement Cergy Institut Français du Pétrole Institut des Sciences de la Terre de Paris Institut Français du Pétrole Institut des Sciences de la Terre de Paris Institut Français du Pétrole
• Publié dans Geophysical Journal International le 25/10/2020

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Résumé : The Sheep Mountain anticline (Wyoming, USA) is a well-exposed asymmetric, basement-cored anticline that formed during the Laramide orogeny in the early Tertiary. In order to unravel the history of strain during folding, we carried out combined anisotropy of magnetic susceptibility (AMS), anisotropy of P-wave velocity (APWV) and Fry strain analyses. The results are compared to previously published stress–strain data from calcite twins at the microscopic scale and from fracture sets at the mesoscopic scale, and are used to discuss the kinematics and mechanics of forced folding. The results obtained in sandstone and carbonate lithologies demonstrate a good agreement between (1) the principal axes of the AMS and APWV tensors, (2) stress–strain tensors derived from calcite twins, (3) Fry strain axes and mesoscopic fracture sets. Furthermore, these tensors are coaxial with the main structural trends of the anticline. The differences between AMS and APWV fabrics on one hand, and the differential stress values of the forelimb and the backlimb on the other hand, emphasize how the macroscopic asymmetry of Sheep Mountain anticline affects the strain pattern at the microscopic scale. The data set presented in this paper offers a consistent mechanical scenario for the development of Sheep Mountain anticline.

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• Type de publi. : Autre publication
• Date de publi. : 01/01/2010
• Auteurs : Philippe SchoeneichXavier BodinJean-Michel KrysieckiPhilip DelineLudovic Ravanel
• Organismes : Pacte, Laboratoire de sciences sociales Environnements, Dynamiques et Territoires de Montagne Université Joseph Fourier - Grenoble 1 - Institut de géographie alpine Environnements, Dynamiques et Territoires de Montagne Environnements, Dynamiques et Territoires de Montagne

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2010
• Auteurs : Philippe GruatJean PujolJean-Pierre Serres
• Organismes : Service départemental d'archéologie de l'Aveyron Archéologie des Sociétés Méditerranéennes
• Publié dans Cahiers d'archéologie aveyronnaise le 30/10/2020

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Résumé : Trois sites du Rouergue méridional ont livré 13 stèles protohistoriques du Premier Age du Fer, se rattachant à celles du Midi de la France tout en constituant un groupe stylistique original. L'ensemble le plus important provient du promontoire des Touriès, près du hameau du Vialaret (Saint-Jean et Saint Paul, Aveyron). Il comprend 10 stèles, dont près de la moitié sont décorées et une statue de guerrier en ronde-bosse, probablement muni d'une cuirasse souple avec kardiophylax. Il s'agit d'un torse, stylistiquement proche du buste du Marduel (Saint-Bonnet-du-Gard), appartenant à une statuaire précoce parfois qualifiée « d'école du Languedoc oriental » en raison de sa répartition géographique. Les stèles décorées des trois sites rouergats semblent présenter une évolution de l'image figurative initiale du guerrier des Touriès, sans doute dans le cadre d'un culte héroïque, selon un schéma peut-être transposable au reste du Midi en tout cas à une stèle décorée de l'oppidum de la Ramasse (Clermont-l'Hérault).

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Fichiers liés : CAA n°23 - Saint Jean et Saint Paul - Les stèles du Premier âge du Fer des Touriès HD - 2010 - GRUAT.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2010
• Auteurs : Olivier ZembN. WestM. BourrainJean-Jacques GodonPhilippe Lebaron
• Organismes : Laboratoire d'Océanographie Microbienne Laboratoire d'Océanographie Microbienne Laboratoire d'Océanographie Microbienne Laboratoire de Biotechnologie de l'Environnement [Narbonne] Laboratoire d'Océanographie Microbienne
• Publié dans Journal of Applied Microbiology le 02/11/2020

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Résumé : The aim is to evaluate the importance of the bacterial composition on the resilience of the organic matter assimilation in the sea. Chemostats were inoculated with coastal and offshore bacterial communities. Bacterial density and protein synthesis increased before stabilizing, and this response to confinement was more marked in the offshore chemostats. Before the toluene perturbation the community structure in the coastal chemostats remained complex whereas the offshore chemostats became dominated by Alteromonas sp. After the perturbation, bacterial protein synthesis was inhibited before peaking briefly at a level fivefold to that observed before the perturbation and then stabilizing at a level comparable to that before the perturbation. Alteromonas dominated both the coastal and the offshore communities immediately after the perturbation and the coastal communities did not recover their initial complexity. Cell lysis induced by the toluene perturbation favoured the growth of Alteromonas which could initiate growth rapidly in response to the nutrient pulse. Despite their different community structure in situ, the resilience of protein synthesis of coastal and offshore bacterial communities was dependent on Alteromonas, which dominated in the chemostats. Here we show that although Alteromonas sp. dominated in artificial offshore and coastal communities in chemostats, their response time to the shock was different. This suggests that future perturbation studies on resilience in the marine environment should take account of ecosystem history.

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• Type de publi. : Chapître d'ouvrage
• Date de publi. : 01/01/2010
• Auteurs : Jean-Luc CharlouJean-Pierre DonvalCecile KonnHelene OndreasYves FouquetPhilippe Jean-BaptisteElise Fourre
• Organismes : Unité Géosciences Marines Unité Géosciences Marines Unité Géosciences Marines Unité Géosciences Marines Unité Géosciences Marines

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2010
• Auteurs : Camille RothJean-Philippe Cointet
• Organismes : University of Surrey Centre d'Analyse et de Mathématique sociales Institut des Systèmes Complexes - Paris Ile-de-France Sciences en Société Institut des Systèmes Complexes - Paris Ile-de-France Transformations Sociales et Politiques liées aux Vivants
• Publié dans Social Networks le 30/10/2020

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Résumé : Socio-semantic networks involve agents creating and processing information: communities of scientists, software developers, wild Contributors and webloggers are, among others, examples Of Such knowledge networks. We aim at demonstrating that the dynamics of these communi ties can be adequately described as the coevolution of a social and a socio-semantic network. More precisely, we will first introduce a theoretical framework based on a social network and a socio-semantic network, i.e. an epistemic network featuring agents. concepts and links between agents and between agents and concepts. Adopting a relevant empirical protocol. we will then describe the joint dynamics of social and socio-semantic structures, at both macroscopic and microscopic scales, emphasizing the remarkable stability of these macroscopic properties in spite of a vivid local, agent-based network dynamics. (C) 2009 Elsevier B.V. All rights reserved.

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Fichiers liés : 1-s2.0-S0378873309000215-main_1.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2010
• Auteurs : Thierry TriboutJean-Claude CaritezJoseph GruandMarcel BouffaudPhilippe GuillouetYvon BillonChristophe PéryElisabeth LavilleJean Pierre Bidanel
• Organismes : Génétique Animale et Biologie Intégrative Génétique Expérimentale en Productions Animales Génétique Expérimentale en Productions Animales Unité expérimentale de testage de porcs Insémination Caprine et Porcine Génétique Expérimentale en Productions Animales Domaine expérimental Bourges-La Sapinière Laboratoire d'Ingénierie des Systèmes Biologiques et des Procédés Génétique Animale et Biologie Intégrative
• Publié dans Journal of Animal Science le 02/11/2020

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Résumé : Genetic trends for growth, feed efficiency, composition, and morphometry of carcasses were estimated in a French Large White (LW) pig population using frozen semen. Two groups of pigs were produced by inseminating LW sows with either stored, frozen semen from 17 LW boars born in 1977 or with semen from 23 LW boars born in 1998. In each group, 15 males and 90 females were randomly chosen and mated to produce approximately 1,000 pigs/group. These pigs were performance tested with individual ADFI and serial BW and backfat thickness measurements, slaughtered at 105 kg of BW, and measured for carcass traits. The data were analyzed using mixed linear animal models, including the fixed effect of the experimental group (offspring of 1977 or 1998 boars), the random effect of the additive genetic value of each animal, and, when significant, the fixed effects of sex, fattening batch, and slaughterhouse, the linear regression on BW, and the random effect of the common environment of birth litter. For each trait, the genetic trend was estimated as twice the difference between the 2 experimental groups. Results showed moderately favorable trends for on-test ADG (3.7 +/- 1.3 g/d per year) and feed conversion ratio (-0.014 +/- 0.005 kg/kg per year) in spite of a tendency toward an increase in ADFI (7.6 +/- 4.7 g/yr). A strong reduction in carcass fatness (-0.35 +/- 0.07 mm/yr for carcass average backfat thickness) and a large improvement in carcass leanness (0.31 +/- 0.10 mm(2)/yr and 0.41 perpendicular to 0.08%/yr for loin eye area and carcass muscle content, respectively) were observed. Carcass shape measurements (back and leg length, back width, muscle thickness of hind limbs) were not affected by selection. Serial measurements of BW and backfat thickness showed that the major part of the genetic gains occurred during late growth and that the reduction in the backfat layer was more pronounced in the rear than in the front part of the carcass. The use of frozen semen appears to be a powerful practice to thoroughly investigate changes attributable to selection.

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Fichiers liés : 2010_Tribout_Journal_of_Animal_Science_1.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2010
• Auteurs : Jean-Philippe BoulangerGrant BranstatorAndrea Fabiana CarrilManuel de CastroNicolas DegallierCarlos EreñoHervé Le TreutJosé Antonio MarengoClaudio Guillermo MenéndezMario Nestor NúñezOlga C. PenalbaAlfredo Luis RollaMatilde RusticucciRafael Terra
• Organismes : Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques National Center for Atmospheric Research [Boulder] Centro de Investigaciones del Mar y la Atmósfera Universidad de Castilla-La Mancha = University of Castilla-La Mancha Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques Departamento de Ciencias de la Atmosfera y los Oceanos Laboratoire de Météorologie Dynamique (UMR 8539) Instituto Nacional de Pesquisas Espaciais [Sao José dos Campos, Brasil] = National Institute for Space Research [Sao José dos Campos, Brazil] Centro de Investigaciones del Mar y la Atmósfera Centro de Investigaciones del Mar y la Atmósfera Departamento de Ciencias de la Atmosfera y los Oceanos Centro de Investigaciones del Mar y la Atmósfera Departamento de Ciencias de la Atmosfera y los Oceanos Universidad de la República de Uruguay = University of the Republic of Uruguay [Montevideo]
• Publié dans Climatic Change le 30/10/2020

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Résumé : The goal of the CLARIS project was to build an integrated European-South American network dedicated to promote common research strategies to observe and predict climate changes and their consequent socio-economic impacts taking into account the climate and societal peculiarities of South America. Reaching that goal placed the present network as a privileged advisor to contribute to the design of adaptation strategies in a region strongly affected by and dependent on climate variability (e. g. agriculture, health, hydro-electricity). Building the CLARIS network required fulfilling the following three objectives: (1) The first objective of CLARIS was to set up and favour the technical transfer and expertise in earth system and regional climate modelling between Europe and South America together with the providing of a list of climate data (observed and simulated) required for model validations; (2) The second objective of CLARIS was to facilitate the exchange of observed and simulated climate data between the climate research groups and to create a South American high-quality climate database for studies in extreme events and long-term climate trends; (3) Finally, the third objective of CLARIS was to strengthen the communication between climate researchers and stakeholders, and to demonstrate the feasibility of using climate information in the decision-making process. © Springer Science + Business Media B.V. 2009.

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2010
• Auteurs : Philippe Martin
• Organismes : Religions et croyances

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