Philippe JEAN-PIERRE

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2005
• Auteurs : Patrick R. RacheboeufPhilippe JanvierTa Hoa PhuongJean VannierWang Shang-Qi
• Organismes : Domaines Océaniques Paléobiodiversité et paléoenvironnements Department of Palaeontology Department of Geology PaleoEnvironnements et PaleobioSphere Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences
• Publié dans Geobios le 25/10/2020

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Résumé : Additional vertebrates and ostracods from the bituminous shale of the Khao Loc Formation at Tong Vai, Ha Giang Province, northern Vietnam, corroborate its correlation with the upper part of the Xishancun (Xiaxishancun) Formation and the lower part of the Xitun and Lianhuashan formations of South China, and its Middle to Late Lochkovian age. The variations in morphology and ornamentation of the galeaspid Polybranchiaspis liaojaoshanensis from Tong Vai are discussed and regarded as possibly size and growth-related. A new acanthothoracid placoderm with a very deep dorsal process is described from Tong Vai and the specific distinction between the antiarchs Minicrania lissa from TongVai and M. lirouyii fromYunnan is supported by additional characters. Petalichthyid placoderms are recorded from this locality for the first time, and the skull of a juvenile youngolepidid sarcopterygian is described. Eurypterid fragments and a phyllocarid crustacean are also recorded from the Khao Loc Formation. A new species of the chonetid brachiopod genus Tulynetes, endemic to northern Vietnam, is described from the Pragian Mia Le Formation at Cu Le, Bac Kan Province, a new locality which yields a large diversity of taxa with outstanding preservation.

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2005
• Auteurs : Carole MathelinPhilippe RiegelMarie-Pierre ChenardCatherine TomasettoJean-Philippe Brettes
• Organismes : Institut de génétique et biologie moléculaire et cellulaire
• Publié dans The Breast Journal le 25/10/2013

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2005
• Auteurs : Nathalie BalandraudPhilippe GouretEtienne G.J. DanchinM BlancD ZinnJean RoudierPierre Pontarotti
• Organismes : Evolution biologique Immunogenetique de la Polyarthrite Rhumatoide Evolution biologique Evolution biologique Architecture et fonction des macromolécules biologiques Evolution biologique Evolution biologique Immunogenetique de la Polyarthrite Rhumatoide Evolution biologique
• Publié dans BMC Genomics le 01/11/2020

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Résumé : BACKGROUND: large scale and reliable proteins' functional annotation is a major challenge in modern biology. Phylogenetic analyses have been shown to be important for such tasks. However, up to now, phylogenetic annotation did not take into account expression data (i.e. ESTs, Microarrays, SAGE, ...). Therefore, integrating such data, like ESTs in phylogenetic annotation could be a major advance in post genomic analyses. We developed an approach enabling the combination of expression data and phylogenetic analysis. To illustrate our method, we used an example protein family, the peptidyl arginine deiminases (PADs), probably implied in Rheumatoid Arthritis. RESULTS: the analysis was performed as follows: we built a phylogeny of PAD proteins from the NCBI's NR protein database. We completed the phylogenetic reconstruction of PADs using an enlarged sequence database containing translations of ESTs contigs. We then extracted all corresponding expression data contained in EST database This analysis allowed us 1/To extend the spectrum of homologs-containing species and to improve the reconstruction of genes' evolutionary history. 2/To deduce an accurate gene expression pattern for each member of this protein family. 3/To show a correlation between paralogous sequences' evolution rate and pattern of tissular expression. CONCLUSION: coupling phylogenetic reconstruction and expression data is a promising way of analysis that could be applied to all multigenic families to investigate the relationship between molecular and transcriptional evolution and to improve functional annotation.

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Fichiers liés : 1471-2164-6-153.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2005
• Auteurs : Ivan FaveroGuillaume CassaboisDavid DarsonChristophe VoisinClaude DelalandePhilippe RoussignolJ.-M. Gérard
• Organismes : Laboratoire Pierre Aigrain Laboratoire Pierre Aigrain Laboratoire Pierre Aigrain Laboratoire Pierre Aigrain Laboratoire Pierre Aigrain Laboratoire Pierre Aigrain Nanophysique et Semiconducteurs
• Publié dans Physica E: Low-dimensional Systems and Nanostructures le 02/11/2020

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2005
• Auteurs : Pierre FerronJean-Philippe Deguine
• Organismes :
• Publié dans Agronomy for Sustainable Development le 31/10/2020

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Résumé : In a context of rationalised agriculture integrating the principles of sustainable development, preventive measures for crop protection are called upon to play a dominant role. These preventive measures are based on close knowledge of the functioning of agroecosystems. They are aimed at managing biological pests and their natural enemies, first through action on their habitats both in crop fields and in the non-cultivated part of the farm. A balance of the biological control possibilities available is drawn up and attention paid to the application of recent knowledge in conservation biology. The bases of pest control with a ranking of the various intervention techniques are then set out. Implementation means the development of cropping systems and therefore increased participation by agronomists and also a break with certain agronomic practices commonly used by farmers today.

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Fichiers liés : hal-00886278.pdf

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• Type de publi. : Ouvrage (y compris édition critique et traduction)
• Date de publi. : 01/01/2005
• Auteurs : Jean-Philippe RetailléRenaud PawlakLionel Seinturier
• Organismes : Weaving of Software Components Large-Scale Distributed Systems and Applications Laboratoire d'Informatique Fondamentale de Lille

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2005
• Auteurs : Philippe DessusEric AllègreJean-Jacques Maurice
• Organismes : Laboratoire des Sciences de l'Éducation (Grenoble) Laboratoire des Sciences de l'Éducation (Grenoble) Centre de Recherches en Education Formation et Insertion de Toulouse
• Publié dans L'Année de la Recherche en Sciences de l'Éducation le 31/10/2020

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Résumé : La plupart des méthodes classiques d'analyse de situations d'enseignement considèrent ces dernières comme des environnements statiques : un événement est la conséquence de l'événement précédent. Dans cet article, nous considérons l'enseignement comme la supervision d'un environnement dynamique, dans lequel chaque événement a une signification au sein d'un épisode. Dans ce cadre, nous ré-analysons un corpus de données d'observations de 41 situations-problèmes de mathématiques en école primaire. Nous utilisons un outil statistique d'analyse factorielle, l'analyse de la sémantique latente, permettant de rendre compte de la similarité de deux événements, ou deux épisodes dans une séance. Nous montrons que cet outil permet, sans qu'aucune correspondance entre épisode et type d'événement n'ait été établie a priori, de classer la majorité des épisodes selon leur objet (énoncé d'un problème, recherche ou correction).

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Fichiers liés : arse05-1.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2005
• Auteurs : Christophe RingevalPatrick PeterJean-Philippe Uzan
• Organismes : Institut d'Astrophysique de Paris Institut d'Astrophysique de Paris
• Publié dans Physical Review D le 02/11/2020

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Résumé : We study a six-dimensional braneworld model with infinite warped extra dimensions in the case where the four-dimensional brane is described by a topological vortex of a U(1) symmetry-breaking Abelian Higgs model in presence of a negative cosmological constant. A detailed analysis of the microscopic parameters leading to a finite volume space-time in the extra dimensions is numerically performed. As previously shown, we find that a fine-tuning is required to avoid any kind of singularity on the brane. We then discuss the stability of the vortex by investigating the scalar part of the gauge-invariant perturbations around this fine-tuned configuration. It is found that the hyperstring forming Higgs and gauge fields, as well as the background metric warp factors, cannot be perturbed at all, whereas transverse modes can be considered stable. The warped space-time structure that is imposed around the vortex thus appears severely constrained and cannot generically support nonempty universe models. The genericness of our conclusions is discussed; this will shed some light on the possibility of describing our space-time as a general six-dimensional warped braneworld.

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2005
• Auteurs : Jean-Paul LaclauJacques J. RangerPhilippe DeleporteYann NouvellonLaurent Saint‐andréAbdelfettah KassahJean-Pierre Bouillet
• Organismes : Escola Superior de Agricultura Luiz de Queiroz Unité de recherche Biogéochimie des Ecosystèmes Forestiers Unité de recherche Biogéochimie des Ecosystèmes Forestiers Centre de Coopération Internationale en Recherche Agronomique pour le Développement Centre de Coopération Internationale en Recherche Agronomique pour le Développement
• Publié dans Forest Ecology and Management le 26/10/2020

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Résumé : Clonal plantations of Eucalyptus have been introduced since 1978 on savanna soils of the coastal plains of Congo. Atmospheric deposition, canopy exchange and transfer through the soil were estimated on the whole rooting depth (6 m) over 3 years, in an experimental design installed in a native savanna and an adjacent 6-year-old Eucalyptus plantation. Complementary measurements after planting the experimental savanna made it possible to establish input–output budgets of nutrients for the whole Eucalyptus rotation and to compare them with the native savanna ecosystem. In this highly-weathered soil, atmospheric deposits and symbiotic N fixation by a legume species balanced the nutrient budgets in savanna, despite large losses during annual burnings. After afforestation, weeding in the Eucalyptus stands eliminated the leguminous species responsible for a N input by symbiotic fixation of about 20 kg ha-1 year-1. Whereas the budgets of P, K, Ca and Mg were roughly balanced, the current silviculture led to a deficit of about 140 kg N ha-1 in the soil, throughout a 7-year rotation. This deficit was large relative to the pool of total N in the upper soil layer (0–50 cm), which was about 2 t ha-1. Therefore, the sustainability of Congolese plantations will require an increase in N fertilizer inputs over successive rotations to balance the N budget. These results were consistent with field trials of fertilization. Practical consequences of these budgets were identified, in order to: (i) direct field trials of fertilization, (ii) select appropriate methods of soil preparation, weed control and harvest, (iii) highlight the importance of fire prevention in this area, and (iv) support the implementation of field trials aiming at introducing a biological nitrogen fixing understorey in Eucalyptus stands.

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2005
• Auteurs : R. LaplanaNicolas A TurpinM. KaljonenP. StraussI. BarlundG. BenigniThierry BioteauFrançois BirgandPhilippe BontemsPierre BordenaveO.M. EkloF. FeichtingerM. GarnierR. HaverkampA. LeoneS. TattariJean-Marie LescotAntonio Lo PortoLaurent PietM.N. RipaE. RomstadG. RotillonFrédéric Zahm
• Organismes : Aménités et dynamiques des espaces ruraux Gestion environnementale et traitement biologique des déchets SYKE HELSINKI FIN IKT PETZENKIRCHEN AUT SYKE HELSINKI FIN ISTITUTO DI GENIO RURALE VITERBO ITA Gestion environnementale et traitement biologique des déchets Gestion environnementale et traitement biologique des déchets Institut National de la Recherche Agronomique Gestion environnementale et traitement biologique des déchets Norwegian Crop Research Institute IKT PETZENKIRCHEN AUT IRSA BARI ITA Université Grenoble Alpes [2016-2019] ISTITUTO DI GENIO RURALE VITERBO ITA SYKE HELSINKI FIN Aménités et dynamiques des espaces ruraux IRSA BARI ITA Aménités et dynamiques des espaces ruraux ISTITUTO DI GENIO RURALE VITERBO ITA AUN NOR Université Paris Nanterre Aménités et dynamiques des espaces ruraux

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Résumé : To design the restoration plans requested by the European Water Framework Directive, local regulators need to implement technically designed modifications of farming practices. Their main interest relies on the determination of which modifications are the most appropriate to the local conditions. To help this decision process, a selection grid has been built within the European AgriBMPWater project (5th RTD Framework Program). The main interest of this grid is to allow the comparison of different "Best Management Practices" regarding their environmental effectiveness, the associated costs and their acceptability for farmers. This paper presents the different steps of the method, some tools that have been used and their technical requirements, illustrates with some results the integrated tool that has been developed and provides keys for interpretation.

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