Philippe JEAN-PIERRE

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2002
• Auteurs : Roland LehoucqJeffrey WeeksJean-Philippe UzanEvelise GausmannJean-Pierre Luminet
• Organismes : Laboratoire Univers et Théories Institut d'Astrophysique de Paris Université Paris Cité Laboratoire Univers et Théories
• Publié dans Classical and Quantum Gravity le 29/10/2020

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Résumé : This paper investigates the computation of the eigenmodes of the Laplacian operator in multi-connected three-dimensional spherical spaces. General mathematical results and analytical solutions for lens and prism spaces are presented. Three complementary numerical methods are developed and compared with our analytic results and previous investigations. The cosmological applications of these results are discussed, focusing on the cosmic microwave background (CMB) anisotropies. In particular, whereas in the Euclidean case too-small universes are excluded by present CMB data, in the spherical case, candidate topologies will always exist even if the total energy density parameter of the universe is very close to unity.

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2002
• Auteurs : Philippe CunyJean-Claude MartyJ ChiaveriniI VescovaliD RaphelJean-Francois Rontani
• Organismes : Laboratoire d'océanographie de Villefranche Institut méditerranéen d'océanologie
• Publié dans Deep Sea Research Part II: Topical Studies in Oceanography le 01/11/2020

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Résumé : Particulate samples from the water column were collected monthly from depths of 5-150 m, between May 1996 and March 1997, in the northwestern Mediterranean Sea (Ligurian Sea) as part of the DYFAMED project within the French JGOFS program. These samples were analyzed by gas chromatography-electron impact mass spectrometry for their phytol and 3-methylidene-3,7,11-trimethylhexadecan-1,2-diol (phytyldiol) content. The corresponding Chlorophyll Phytyl side chain Photodegradation Index, molar ratio of phytyldiol to phytol, was calculated and the mean amount of chlorophyll photodegraded within the euphotic zone estimated. Seasonal differences in the chlorophyll photodegradation process appear in the one-year study. The chlorophyll appeared more photodegraded in the surface water (generally more than 40% photodegraded at 5-10m) than at the deep chlorophyll maximum (DCM) (40-50m) observed in the summer stratified waters (about 20% photodegraded). This difference was attributed to the healthy state of the phytoplankton community (coincidence with the highest primary production levels) and to the lower intensity of irradiance at the DCM level. On the other hand, the bulk of the detrital chlorophyll (chlorophyll associated with phytodetritus, phaeopigments) undergoes photodegradation before it sinks out of the photic zone. However, in January (winter mixed water) the pigments exported towards the sea floor were less photodegraded. This is thought to result from a shorter period of residence of the pigments in the photic zone due to vertical convection and grazing activity of macrozooplankton (salps), which are producers of rapid sinking fecal pellets. (C) 2002 Elsevier Science Ltd. All rights reserved.

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• Type de publi. : Chapître d'ouvrage
• Date de publi. : 01/01/2002
• Auteurs : Philippe Jean-PierreJean-Louis Fusillier
• Organismes : Centre d'Économie et de Management de l'Océan Indien Université de La Réunion

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2002
• Auteurs : Philippe DessusJean-Yves Carpanèse
• Organismes : Laboratoire des Sciences de l'Éducation (Grenoble) French American School of Portland, USA Laboratoire des Sciences de l'Éducation (Grenoble)

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2002
• Auteurs : Jean-Pierre CharmesPhilippe SauvageY. NouailleLouis MerleThierry Dantoine
• Organismes : Soins de Suite de Réadaptation Gériatrique [CHU Limoges] Service de Pharmacologie, toxicologie et pharmacovigilance [CHU Limoges] Equipe de Recherche Médicale Appliquée Handicap, Activité, Vieillissement, Autonomie, Environnement

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• Type de publi. : Chapître d'ouvrage
• Date de publi. : 01/01/2002
• Auteurs : Philippe Jean-BaptisteElise FourréAlain Poisson
• Organismes : Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] Glaces et Continents, Climats et Isotopes Stables Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] Glaces et Continents, Climats et Isotopes Stables Laboratoire de Physique et Chimie Marines

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2002
• Auteurs : Philippe TalagaVirginie CogezJean-Michel WieruszeskiBernd StahlJérôme LemoineGuy LippensJean-Pierre Bohin
• Organismes : Unité de Glycobiologie Structurale et Fonctionnelle - UMR 8576 Unité de Glycobiologie Structurale et Fonctionnelle - UMR 8576 Synthèse, structure et fonction des biomolécules Research International Unité de Glycobiologie Structurale et Fonctionnelle - UMR 8576 Synthèse, structure et fonction des biomolécules Unité de Glycobiologie Structurale et Fonctionnelle - UMR 8576
• Publié dans European Journal of Biochemistry le 23/10/2020

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Résumé : The osmoregulated periplasmic glucans (OPGs) produced by Rhodobacter sphaeroides, a free-living organism, were isolated by trichloracetic acid treatment and gel permeation chromatography. Compounds obtained were characterized by compositional analysis, matrix-assisted laser desorption ionization mass spectrometry and nuclear magnetic resonance. R. sphaeroides predominantly synthesizes a cyclic glucan containing 18 glucose residues that can be substituted by one to seven succinyl esters residues at the C6 position of some of the glucose residues, and by one or two acetyl residues. The glucans were subjected to a mild alkaline treatment in order to remove the succinyl and acetyl substituents, analyzed by MALDI mass spectrometry and purified by high-performance anion-exchange chromatography. Methylation analysis revealed that this glucan is linked by 17 1,2 glycosidic bonds and one 1,6 glycosidic bond. Homonuclear and 1H/13C heteronuclear NMR experiments revealed the presence of a single alpha-1,6 glycosidic linkage, whereas all other glucose residues are beta-1,2 linked. The different anomeric proton signals allowed a complete sequence-specific assignment of the glucan. The structural characteristics of this glucan are very similar to the previously described OPGs of Ralstonia solanacearum and Xanthomonas campestris, except for its different size and the presence of substituents. Therefore, similar OPGs are synthesized by phytopathogenic as well as free-living bacteria, suggesting these compounds are intrinsic components of the Gram-negative bacterial envelope

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2002
• Auteurs : Agnès GuerrazBernard HennionAdriana VilchisJocelyne TroccazPhilippe CinquinFranck PellisierPierre ThorelBertrand TonduFabien CourrègesGérard PoissonMarc AlthuserJean-Marc Ayoubi
• Organismes : France Télécom Recherche & Développement France Télécom Recherche & Développement Gestes Medico-chirurgicaux Assistés par Ordinateur Gestes Medico-chirurgicaux Assistés par Ordinateur Gestes Medico-chirurgicaux Assistés par Ordinateur France Télécom Recherche & Développement France Télécom Recherche & Développement Institut National des Sciences Appliquées - Toulouse Laboratoire de Vision et Robotique Laboratoire de Vision et Robotique CHU de Grenoble-Alpes - Centre Hospitalier Universitaire CHU Grenoble CHU de Grenoble-Alpes - Centre Hospitalier Universitaire CHU Grenoble

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Résumé : This paper presents a master-slave system applied to the remote diagnosis from echographic data. The motion of the master manipulator is remotely controlled by a physician and reproduced by a slave robot carrying the echographic probe. The contact force between the probe and the patient is fed back to operator allowing him to have a haptic virtual environment. The innovation of this haptic control is to preserve medical expert propioception and gesture feelings, which are necessary to synchronize the ultrasound images with the motion made by the medical doctor. The slave robot is a cable-driven manipulator using pneumatic artificial muscle actuators to control the motion of the ultrasound probe. In this paper we present the architecture and the performances of the slave robot and the first experiments of the master-slave remote echography system for examinations of pregnant women.

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2002
• Auteurs : Thierry DantoineJean-Pierre CharmesMarie-Laure LarocheLouis MerlePhilippe SauvageY. Nouaille
• Organismes : Handicap, Activité, Vieillissement, Autonomie, Environnement Soins de Suite de Réadaptation Gériatrique [CHU Limoges] Service de Pharmacologie, toxicologie et pharmacovigilance [CHU Limoges] Handicap, Activité, Vieillissement, Autonomie, Environnement Equipe de Recherche Médicale Appliquée Service de Pharmacologie, toxicologie et pharmacovigilance [CHU Limoges]

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• Type de publi. :
• Date de publi. : 01/01/2002
• Auteurs : R. LaplanaFrédéric ZahmLaurent PietJean-Marie LescotFrançois BirgandThierry BioteauPierre BordenaveNicolas A TurpinPhilippe BontemsG. RotillonI. BarlundM. KaljonenS. TattariF. FeichtingerP. StraussR. HaverkampM. GarnierAntonio Lo PortoG. BenigniA. LeoneM.N. RipaO.M. EkloE. Romstad
• Organismes : Aménités et dynamiques des espaces ruraux Gestion environnementale et traitement biologique des déchets Institut National de la Recherche Agronomique UNIVERSITE NANTERRE FINNISH ENVIRONMENT INSTITUTE FIN BUNDESAMT FUR WASSERWIRTSCHAFT AUT Université Grenoble Alpes [2016-2019] INSTITUTO DI RICERCA SULLE ACQUE ITA Università degli studi della Tuscia = Tuscia University [Viterbo] Norwegian Crop Research Institute AGRICULTURAL UNIVERSITY OF NORWAY NOR

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Résumé : AgriBMPWater is an European research project of the 5th RTD Framework program (key action : Sustainable Mnagement and Quality of Water). The fourth meeting of this project took place in Finland (Suitia) for 3 days (September, 11th to 13th 2002) with all the involved partners.

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