Philippe JEAN-PIERRE

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• Type de publi. : Rapport
• Date de publi. : 01/01/2001
• 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 AGRICULTURAL UNIVERSITY OF NORWAY NOR AGRICULTURAL UNIVERSITY OF NORWAY NOR AGRICULTURAL UNIVERSITY OF NORWAY NOR AGRICULTURAL UNIVERSITY OF NORWAY NOR AGRICULTURAL UNIVERSITY OF NORWAY NOR AGRICULTURAL UNIVERSITY OF NORWAY NOR AGRICULTURAL UNIVERSITY OF NORWAY NOR AGRICULTURAL UNIVERSITY OF NORWAY NOR AGRICULTURAL UNIVERSITY OF NORWAY NOR AGRICULTURAL UNIVERSITY OF NORWAY NOR AGRICULTURAL UNIVERSITY OF NORWAY NOR 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 Management and Quality of Water). This report presents the progress of the project during the first twelve months : July 1st 2000 - June 30th 2001

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2001
• Auteurs : Guillaume MorinFarid JuillotPhilippe IldefonseGeorges CalasJean-Claude SamamaPierre ChevallierGordon-E. Brown-Jr.
• Organismes : Institut de minéralogie et de physique des milieux condensés Institut de minéralogie et de physique des milieux condensés Institut de minéralogie et de physique des milieux condensés Institut de minéralogie et de physique des milieux condensés Ecole Nationale Supérieure de Géologie Laboratoire pour l'utilisation du rayonnement électromagnétique Department of Geological Sciences [Stanford] Stanford Synchrotron Radiation Lightsource
• Publié dans The American Mineralogist le 31/10/2020

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Résumé : Lead speciation was determined in a soil developed on a geochemical anomaly arising from a Pb- Zn stratabound deposit in Largentière (Ardèche, France). This geological setting offers the opportunity to determine the preferred form(s) of Pb following soil formation on this unique anomaly. In the soil profile studied, Pb concentrates in the B-horizon (2055 mg/kg Pb) relative to both the A- (1330 mg/kg Pb) and C- (1874 mg/kg Pb) horizons. Plumbogummite (PbAl3(PO4)2(OH)5·H2O) is the main host of Pb in the soil profile. Pb also appears to be associated with Mn-(hydr)oxides, as shown by micro-analyses (EMPA, SEM-EDS, and µ-SXRF), in the form of inner-sphere Pb2+ complexes, as suggested by Pb LIII-edge EXAFS spectroscopy. Linear least-squares fitting of background-subtracted, k3-weighted Pb LIII-edge EXAFS functions derived from bulk soil samples was carried out using Pb LIII-EXAFS spectra of 22 Pb-containing model compounds. Quantitative assessment of Pb speciation revealed that, whereas plumbogummite is the most abundant Pb phase in the soil profile, Pb2+–Mn-(hydr)oxide surface complexes are gradually replaced by Pb2+-surface complexes with other phases, possibly Pb2+-organic complexes, upward in the soil profile. The presence of large amounts of Pb-phosphate in the Largentière soil suggests that low solubility phosphates may be important long-term hosts of Pb in Pb-contaminated soils that have sufficiently high phosphorous activities to cause formation of these phases.

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2001
• Auteurs : Yann H. KerrWigneron J.-P.Philippe WaldteufelJean-Christophe CalvetMichael Berger
• Organismes : Centre d'études spatiales de la biosphère Écologie fonctionnelle et physique de l'environnement Service d'aéronomie Centre national de recherches météorologiques European Space Research and Technology Centre

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Résumé : The SMOS L-band 2-D interferometer is based on an innovative concept of bi-dimensional aperture synthesis method. The instrument is a Y shaped structure consisting of 3 coplanar arms. The sensor has new and very significant capabilities especially in terms of multi-angular view configuration.. This paper will describe the SMOS concept in terms of instrument (characteristics) investigates the main aspects of the retrieval capabilities of the 2-D microwave interferometer for monitoring soil moisture, vegetation biomass and surface temperature. The analysis is based on model inversion taking into account the instrument characteristics. The standard error of estimate of the surface variables is computed as a function of the sensor configuration system and of the uncertainties associated with the spatial measurements. The inversion process is based on a standard minimisation routine that computes both retrieved variables and standard error associated with the retrievals. The potential of SMOS, depending on the view angle configuration and the use of the sole 1.4 GHz is investigated. These questions are key issues to define the observation configuration of SMOS that meets the scientific requirements and the technical constraints of the spatial missions.

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2001
• Auteurs : Thierry DantoineBruno FrançoisJ. DebordJean-Pierre CharmesPhilippe VignonLouis Merle
• Organismes : Handicap, Activité, Vieillissement, Autonomie, Environnement Service d'Accompagnement et Soins Palliatifs [CHU Limoges] Service de Réanimation Polyvalente [CHU Limoges] Soins de Suite de Réadaptation Gériatrique [CHU Limoges] Service d'Accompagnement et Soins Palliatifs [CHU Limoges] Equipe de Recherche Médicale Appliquée

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2001
• Auteurs : Sinan HaliyoYves RollotStéphane RégnierPhilippe BidaudJean-Claude Guinot
• Organismes : Laboratoire de Robotique de Paris Laboratoire de Robotique de Paris Laboratoire de Robotique de Paris Laboratoire de Robotique de Paris Laboratoire de Robotique de Paris

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• Type de publi. : Ouvrage (y compris édition critique et traduction)
• Date de publi. : 01/01/2001
• Auteurs : Jean-Pierre Le CromPhilippe-Jean Hesse
• Organismes : Maison des Sciences de l'Homme Ange-Guépin Droit et changement social

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2001
• Auteurs : Pierre BouletJean-Luc DekeyserFlorent DevinPhilippe Marquet
• Organismes : Laboratoire d'Informatique Fondamentale de Lille Contributions of the Data parallelism to real time Laboratoire d'Informatique Fondamentale de Lille Contributions of the Data parallelism to real time Laboratoire d'Informatique Fondamentale de Lille Laboratoire d'Informatique Fondamentale de Lille Contributions of the Data parallelism to real time

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Résumé : Gaspard is a visual programming environment devoted to the development and control of scientific parallel applications. par The two paradigms of parallel programming (task and data parallelism) are mixed in Gaspard: a hierarchy of task graphs operates on array flows. These two levels are mixed in a common metaphor. An application is designed as a printed circuit: the programmer specifies tasks as boards or chips and instantiates tasks by plugging them into slots. par The number crunching applications developped using Gaspard are deployed on metacomputing platforms. The visual specification of the application mapping may be dynamically modified at runtime according to the information provided by Gaspard.

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2001
• Auteurs : Yann H. KerrPhilippe WaldteufelWigneron J.-P.J. MartinuzziJ. FontM. Berger
• Organismes : Centre d'études spatiales de la biosphère Service d'aéronomie Écologie fonctionnelle et physique de l'environnement Centre National d'Études Spatiales [Toulouse] Institute of Marine Sciences / Institut de Ciències del Mar [Barcelona] European Space Research Institute
• Publié dans IEEE Transactions on Geoscience and Remote Sensing le 31/10/2020

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Résumé : Microwave radiometry at low frequencies (L-band: 1.4 GHz, 21 cm) is an established technique for estimating surface soil moisture and sea surface salinity with a suitable sensitivity. However, from space, large antennas (several meters) are required to achieve an adequate spatial resolution at L-band. So as to reduce the problem of putting into orbit a large filled antenna, the possibility of using antenna synthesis methods has been investigated. Such a system, relying on a deployable structure, has now proved to be feasible and has led to the Soil Moisture and Ocean Salinity (SMOS) mission, which is described. The main objective of the SMOS mission is to deliver key variables of the land surfaces (soil moisture fields), and of ocean surfaces (sea surface salinity fields). The SMOS mission is based on a dual polarized L-band radiometer using aperture synthesis (two-dimensional [2D] interferometer) so as to achieve a ground resolution of 50 km at the swath edges coupled with multiangular acquisitions. The radiometer will enable frequent and global coverage of the globe and deliver surface soil moisture fields over land and sea surface salinity over the oceans. The SMOS mission was proposed to the European Space Agency (ESA) in the framework of the Earth Explorer Opportunity Missions. It was selected for a tentative launch in 2005. The goal of this paper is to present the main aspects of the baseline mission and describe how soil moisture will be retrieved from SMOS data.

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2001
• Auteurs : Y. NouaillePhilippe SauvageL VeroneseLouis MerleJean-Pierre CharmesThierry Dantoine
• Organismes : Service de Pharmacologie, toxicologie et pharmacovigilance [CHU Limoges] Equipe de Recherche Médicale Appliquée Soins de Suite de Réadaptation Gériatrique [CHU Limoges] Handicap, Activité, Vieillissement, Autonomie, Environnement

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2001
• Auteurs : Pierre KernJean-Philippe BergerPierre HaguenauerFabien MalbetKarine Perraut
• Organismes : Laboratoire d'Astrophysique de Grenoble Institut de Microélectronique, Electromagnétisme et Photonique Institut de Microélectronique, Electromagnétisme et Photonique Capteurs Systèmes Optiques de mesure Laboratoire d'Astrophysique de Grenoble Laboratoire d'Astrophysique de Grenoble
• Publié dans Comptes Rendus. Physique le 30/10/2020

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Résumé : Integrated optics (IO) is an optical technology that allows to reproduce optical circuits on a planar substrate. Since 1996, we have investigated the potentiality of IO in the framework of astronomical single mode interferometry. We review in this paper the principles of IO, the requirements for interferometry and the corresponding solutions offered by IO, the results of component characterization and the possible fields of application.

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Fichiers liés : cras-ionic.pdf

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