Philippe JEAN-PIERRE

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• Type de publi. : Communication dans un congrès
• Date de publi. : 23/07/2007
• Auteurs : Kauzar Saleh ContellWigneron J.-P.Patricia de RosnayMaria Jose EscorihuelaYann H. KerrJean-Christophe CalvetMike SchwankPhilippe Waldteufel
• Organismes : Department of Geography [Cambridge, UK] Écologie fonctionnelle et physique de l'environnement Centre d'études spatiales de la biosphère Centre d'études spatiales de la biosphère Centre d'études spatiales de la biosphère Centre national de recherches météorologiques Institute of Terrestrial Ecosystems Service d'aéronomie

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Résumé : This paper compares L-band measurements from three different experiments in areas covered by grass. The main objective is to assess soil moisture retrievals based on the L-band Microwave Emission of the Biosphere model (L-MEB) used by the Soil Moisture and Ocean Salinity mission (SMOS). Results indicate that over grass the vegetation is isotropic to the microwave propagation at horizontal polarisation, while at vertical polarisation non-zero scattering is observed for all the grass data sets. Surface soil moisture is retrieved with enough accuracy for all data sets as long as the soil roughness and litter emission are calibrated beforehand. The study also highlights the importance of detecting strong attenuation by wet vegetation and litter due to rainfall interception. We show that strong rainfall interception can be flagged using a microwave polarisation index.

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• Type de publi. : Communication dans un congrès
• Date de publi. : 23/07/2007
• Auteurs : Kauzar Saleh ContellYann H. KerrGilles BouletPhilippe MaisongrandePatricia de RosnayDana FloricioiuMaria Jose EscorihuelaWigneron J.-P.Aurelio CanoErnesto Lopez-BaezaJennifer P. Grant
• Organismes : Department of geography Centre d'études spatiales de la biosphère Centre d'études spatiales de la biosphère Centre d'études spatiales de la biosphère Centre d'études spatiales de la biosphère Centre d'études spatiales de la biosphère Centre d'études spatiales de la biosphère Écologie fonctionnelle et physique de l'environnement Universitat de València = University of Valencia = Universidade de Valencia Universitat de València = University of Valencia = Universidade de Valencia Vrije Universiteit Amsterdam [Amsterdam]

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• Type de publi. : Communication dans un congrès
• Date de publi. : 23/07/2007
• Auteurs : Gabriel VasileEmmanuel TrouvéLionel ValetJean-Marie NicolasLionel BombrunMichel GayIvan PétillotPhilippe BolonVasile Buzuloiu
• Organismes : GIPSA - Signal Images Physique GIPSA - Signal Images Physique Laboratoire d'Informatique, Systèmes, Traitement de l'Information et de la Connaissance Laboratoire Traitement et Communication de l'Information GIPSA - Signal Images Physique GIPSA-Services GIPSA - Signal Images Physique Laboratoire d'Informatique, Systèmes, Traitement de l'Information et de la Connaissance Laboratoire d'Informatique, Systèmes, Traitement de l'Information et de la Connaissance Laboratoire API

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Résumé : SAR interferometry (InSAR) performs two acquisitions (spatially separated by the baseline) of the signal back-scattered by the resolution cell which contains height and/or displacement information. Repeat pass spaceborne interferometry provides multi-interferograms which can be used to extract such information either by combining the multi-temporal results of conventional interferometry or by a different approach based on specific targets: the coherent stable scatterers (CSS). In this paper a two-step approach is proposed to obtain specific features from multi-temporal InSAR data sets. The first step consists in extracting image attributes related to the useful information. The second step consists in merging the attributes using an interactive fuzzy fusion technique. The interactive fuzzy fusion is proposed to provide end-users with a simple and easily understandable tool for tuning the detection results. The method is applied on a data set of five co-registered ERS 1/2 tandems from the French Alps (the Mont-Blanc region), including two temperate glaciers: the Argenti'ere and the Mer-de-glace. The results illustrate how the end-user can combine the proposed attributes to detect the presence of CSS or distributed stable scatterers usefull for multi-temporal analysis.

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Fichiers liés : IGARSS_2007_1.pdf

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• Type de publi. : Communication dans un congrès
• Date de publi. : 23/07/2007
• Auteurs : Sonia ZineJacqueline BoutinJordi FontCarolina GabarróMarco TaloneNicolas ReulJoseph TenerelliPhilippe WaldteufelFrançois PetitcolinJean-Luc Vergely
• Organismes : Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques Mediterranean Center for Marine and Environmental Research Mediterranean Center for Marine and Environmental Research Mediterranean Center for Marine and Environmental Research Laboratoire d'Océanographie Spatiale Laboratoire d'Océanographie Spatiale Analytic and Computational Research, Inc. - Earth Sciences Analytic and Computational Research, Inc. - Earth Sciences

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Résumé : The Soil Moisture and Ocean Salinity (SMOS) mission (launch scheduled for 2008) aims at obtaining global maps of soil moisture and sea surface salinity (SSS). It uses an L-band (1.4 GHz) microwave interferometric radiometer to obtain brightness temperatures (Tb) at the Earth surface at horizontal and vertical polarizations. They will be used to retrieve both geophysical variables, following specifically designed algorithms that will be applied when the satellite field-of-view is covering land or ocean surfaces respectively. The retrieval of salinity is a complex process that requires the knowledge of environmental information and an accurate processing of the radiometer measurements, because of the narrow range of ocean Tb and the strong impact on the measures of geophysical parameters (such as sea state). Here we present the baseline approach chosen to retrieve sea surface salinity from SMOS data, as developed and implemented by the joint team of scientists and engineers responsible for the SMOS Salinity Level 2 Prototype Processor. We present academic tests conducted over homogeneous scenes with the prototype. In these configurations, external perturbation sources (sky radiation, sun glint, ...) are not taken into account. Roughness is the main sea surface signal disturbing SSS retrieval.

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• Type de publi. : Communication dans un congrès
• Date de publi. : 23/07/2007
• Auteurs : Sonia ZineJacqueline BoutinJ. FontCarolina GabarróMarco TaloneNicolas ReulJoseph TenerelliPhilippe WaldteufelFrançois PetitcolinJean-Luc Vergely
• Organismes : Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques Institute of Marine Sciences / Institut de Ciències del Mar [Barcelona] Institute of Marine Sciences / Institut de Ciències del Mar [Barcelona] Institute of Marine Sciences / Institut de Ciències del Mar [Barcelona] Laboratoire d'Océanographie Spatiale Laboratoire d'Océanographie Spatiale Service d'aéronomie Analytic and Computational Research, Inc. - Earth Sciences Analytic and Computational Research, Inc. - Earth Sciences

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Résumé : The Soil Moisture and Ocean Salinity (SMOS) mission (launch scheduled for 2008) aims at obtaining global maps of soil moisture and sea surface salinity (SSS). It uses an L-band (1.4 GHz) microwave interferometric radiometer to obtain brightness temperatures (Tb) at the Earth surface at horizontal and vertical polarizations. They will be used to retrieve both geophysical variables, following specifically designed algorithms that will be applied when the satellite field-of-view is covering land or ocean surfaces respectively. The retrieval of salinity is a complex process that requires the knowledge of environmental information and an accurate processing of the radiometer measurements, because of the narrow range of ocean Tb and the strong impact on the measures of geophysical parameters (such as sea state). Here we present the baseline approach chosen to retrieve sea surface salinity from SMOS data, as developed and implemented by the joint team of scientists and engineers responsible for the SMOS Salinity Level 2 Prototype Processor. We present academic tests conducted over homogeneous scenes with the prototype. In these configurations, external perturbation sources (sky radiation, sun glint, ...) are not taken into account. Roughness is the main sea surface signal disturbing SSS retrieval. In dual pol, wind speed biases are better corrected at the center of the swath than at the edge.

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• Type de publi. : Communication dans un congrès
• Date de publi. : 18/07/2007
• Auteurs : Lionel BombrunIvan PétillotGabriel VasileMichel GayEmmanuel TrouvéPhilippe BolonJean-Marie NicolasTania Landes
• Organismes : GIPSA - Signal Images Physique Laboratoire d'Informatique, Systèmes, Traitement de l'Information et de la Connaissance Laboratoire d'Informatique, Systèmes, Traitement de l'Information et de la Connaissance GIPSA-Services GIPSA - Signal Images Physique Laboratoire d'Informatique, Systèmes, Traitement de l'Information et de la Connaissance Laboratoire d'Informatique, Systèmes, Traitement de l'Information et de la Connaissance Département Réseaux, Sécurité et Multimédia Modèles et simulation pour l'architecture, l'urbanisme et le paysage

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Résumé : Temperate glaciers are an indicator of the local effects of global climate change. For economical and security reasons in the surrounding areas, the monitoring of those geophysical objects is being a necessity. SAR data are expected to provide dense measurements of physical parameters which are necessary to detect significant changes and to constrain glacier flow models. In this paper, five descending one-day ERS- 1/2 tandem interferometric data pairs from July 1995 to April 1996 are studied in the Chamonix Mont-Blanc area (French Alps). This multi-temporal interferogram series is used to analyse the coherence levels and fringe patterns over nine glaciers. Moreover, when the coherence is sufficient, Differential SAR Interferometry (D-InSAR) processing are applicable to derive a three-dimensional (3-D) velocity fields. An expert knowledge and a ten years measurements analysis of glacier flow are used to fix the line of sight (LOS) displacement offset. Finally, an analysis of the wrapped phase difference between interferograms is exposed to detect the presence of residual topographic fringes and to characterize the surface flow field evolution.

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Fichiers liés : Bombrun_07_MULTITEMP.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 16/07/2007
• Auteurs : Pierre-Yves OrainJean-François CaponNelly KervarecFrédéric GloaguenFrançois Y. PétillonRoger PichonPhilippe P. SchollhammerJean Talarmin
• Organismes : Chimie, Electrochimie Moléculaires et Chimie Analytique Chimie, Electrochimie Moléculaires et Chimie Analytique Plateforme technologique de Résonance Magnétique Nucléaire et de Résonance Paramagnétique Electronique Chimie, Electrochimie Moléculaires et Chimie Analytique Chimie, Electrochimie Moléculaires et Chimie Analytique Plateforme technologique de Résonance Magnétique Nucléaire et de Résonance Paramagnétique Electronique Chimie, Electrochimie Moléculaires et Chimie Analytique Chimie, Electrochimie Moléculaires et Chimie Analytique
• Publié dans Dalton Transactions le 01/11/2020

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Résumé : Treatment of [Fe2(µ-pdt)(CO)6] (pdt = S(CH2)3S) with 1,10-phenanthroline (phen) in refluxing toluene affords the asymmetric complex [Fe2(µ-pdt)(CO)4(phen)] (1); the protonation of 1 with HBF4·OEt2 in CD2Cl2 at 203 K has been monitored by 1H NMR.

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• Type de publi. : Communication dans un congrès
• Date de publi. : 16/07/2007
• Auteurs : Aurélien LavaudAbad ChabbiV. JacquementJean-Philippe Croué
• Organismes : Laboratoire de Chimie de l'Eau et de l'Environnement [ESA 6008] Unité Expérimentale Fourrages et Environnement de Lusignan Biogéochimie et écologie des milieux continentaux VEOLIA France Laboratoire de Chimie de l'Eau et de l'Environnement [ESA 6008]

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• Type de publi. : Article dans une revue
• Date de publi. : 15/07/2007
• Auteurs : Alexandre Ho-Pun-CheungEric AssenatSimon ThezenasFrédéric BibeauRouanet PhilippeDavid AzriaDominic CellierJean GrenierMarc YchouPierre SenesseEvelyne Lopez-Crapez
• Organismes : Immunociblage des tumeurs et ingénierie des anticorps Département d'oncologie Médicale Département de nutrition et d'oncologie digestive Unité de biostatistiques Laboratoire d'anatomo-pathologie Département de radiothérapie Département de chirurgie Immunociblage des tumeurs et ingénierie des anticorps Merck Santé Département d'oncologie Médicale Département de nutrition et d'oncologie digestive Département de nutrition et d'oncologie digestive Département d'oncologie Médicale
• Publié dans International Journal of Radiation Oncology, Biology, Physics le 31/10/2020

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Résumé : PURPOSE: To investigate whether CCND1 genetic variations associated with a constitutive nuclear protein may influence either the pathologic response to preoperative RT or the prognosis in a series of rectal cancer patients. METHODS AND MATERIALS: Seventy rectal cancer patients treated by neoadjuvant radiotherapy were included in the study. CCND1 exon 5 mutations were screened, and the G870A polymorphism was assessed for correlation with clinical variables, tumor response, and patient outcome. RESULTS: No exon 5 mutation was found. Concerning the G870A polymorphism, the A/A variant was significantly associated with radiosensitivity (p = 0.022). Moreover, patients harboring the A allele were correlated with a lower risk of local failure (p = 0.017). Also, combination of the G870A polymorphism with the post-therapeutic lymph node status allowed the elaboration of a prognostic index, which accurately distinguished subgroups of patients with predictable recurrence-free (p = 0.003) and overall (p = 0.044) survival. CONCLUSIONS: Although CCND1 exon 5 mutations are rare in rectal cancer, G870A polymorphism is a frequent variation that may predict radiosensitivity and prognosis.

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Fichiers liés : Revised_Tables.pdf Revised_MS_cyclin_D1_Unmarked_.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 12/07/2007
• Auteurs : Irina PanteleevaStéphanie BoutillierViolaine SéeDave SpillerCaroline RouauxGeneviève AlmouzniDelphine BaillyChristèle MaisonHelen LaiJean-Philippe LoefflerAnne-Laurence Boutillier
• Organismes : Laboratoire de signalisation moléculaire et neurodégénerescence University of Liverpool Mécanismes Centraux et Périphériques de la Neurodégénérescence Dynamique nucléaire et plasticité du génome Dynamique nucléaire et plasticité du génome Dynamique nucléaire et plasticité du génome Laboratoire de signalisation moléculaire et neurodégénerescence Laboratoire de signalisation moléculaire et neurodégénerescence
• Publié dans EMBO Journal le 23/10/2020

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