Professeur des universités en sciences de gestion
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Sulfates have been discovered by the OMEGA spectrometer in different locations of the planet Mars. They are strongly correlated to light toned layered deposits in the equatorial regions. West Candor Chasma is the canyon with the thickest stack of layers and one with the largest area covered by sulfates. A detailed study coupling mineralogy derived from OMEGA spectral data and geology derived from HRSC imager and other datasets leads to some straightforward issues. The monohydrated sulfate kieserite is found mainly over heavily eroded scarps of light toned material. It likely corresponds to a mineral present in the initial rock formed either during formation and diagenesis of sediments, or during hydrothermal alteration at depth, because it is typically found on outcrops that are eroded and steep. Polyhydrated sulfates, that match any Ca-, Na-, Fe-, or Mg-sulfates with more than one water molecule, are preferentially present on less eroded and darker outcrops than outcrops of kieserite. These variations can be the result of a diversity in the composition and/or of the rehydration of kieserite on surfaces with longer exposure. The latter possibility of rehydration in the current, or recent, atmosphere suggests the low surface temperatures preserve sulfates from desiccation, and, also can rehydrate part of them. Strong signatures of iron oxides are present on sulfate-rich scarps and at the base of layered deposits scarps. They are correlated with TES gray hematite signature and might correspond to iron oxides present in the rock as sand-size grains, or possibly larger concretions, that are eroded and transported down by gravity at the base of the scarp. Pyroxenes are present mainly on sand dunes in the low lying terrains. Pyroxene is strongly depleted or absent in the layered deposits. When mixed with kieserite, local observations favor a spatial mixing with dunes over layered deposits. Sulfates such as those detected in the studied area require the presence of liquid water to form by precipitation, either in an intermittent lacustrine environment or by hydrothermal fluid circulation. Both possibilities require the presence of sulfur-rich groundwater to explain fluid circulation. The elevation of the uppermost sulfate signatures suggests the presence of aquifers up to 2.5 km above datum, only 1 km below the plateau surface.
- Type de publi. : Article dans une revue
- Date de publi. : 01/01/2008
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Auteurs :
Nicolas MangoldAline GendrinBrigitte GondetStéphane Le MouélicCathy Quantin-NatafV. AnsanJean-Pierre BibringYves LangevinPhilippe MassonGerhard Neukum
Fiche détaillée
Sulfates have been discovered by the OMEGA spectrometer in different locations of the planet Mars. They are strongly correlated to light toned layered deposits in the equatorial regions. West Candor Chasma is the canyon with the thickest stack of layers and one with the largest area covered by sulfates. A detailed study coupling mineralogy derived from OMEGA spectral data and geology derived from HRSC imager and other datasets leads to some straightforward issues. The monohydrated sulfate kieserite is found mainly over heavily eroded scarps of light toned material. It likely corresponds to a mineral present in the initial rock formed either during formation and diagenesis of sediments, or during hydrothermal alteration at depth, because it is typically found on outcrops that are eroded and steep. Polyhydrated sulfates, that match any Ca-, Na-, Fe-, or Mg-sulfates with more than one water molecule, are preferentially present on less eroded and darker outcrops than outcrops of kieserite. These variations can be the result of a diversity in the composition and/or of the rehydration of kieserite on surfaces with longer exposure. The latter possibility of rehydration in the current, or recent, atmosphere suggests the low surface temperatures preserve sulfates from desiccation, and, also can rehydrate part of them. Strong signatures of iron oxides are present on sulfate-rich scarps and at the base of layered deposits scarps. They are correlated with TES gray hematite signature and might correspond to iron oxides present in the rock as sand-size grains, or possibly larger concretions, that are eroded and transported down by gravity at the base of the scarp. Pyroxenes are present mainly on sand dunes in the low lying terrains. Pyroxene is strongly depleted or absent in the layered deposits. When mixed with kieserite, local observations favor a spatial mixing with dunes over layered deposits. Sulfates such as those detected in the studied area require the presence of liquid water to form by precipitation, either in an intermittent lacustrine environment or by hydrothermal fluid circulation. Both possibilities require the presence of sulfur-rich groundwater to explain fluid circulation. The elevation of the uppermost sulfate signatures suggests the presence of aquifers up to 2.5 km above datum, only 1 km below the plateau surface.
- Type de publi. : Article dans une revue
- Date de publi. : 01/01/2008
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Auteurs :
Nicolas MangoldAline GendrinBrigitte GondetStéphane Le MouélicCathy Quantin-NatafV. AnsanJean-Pierre BibringYves LangevinPhilippe MassonGerhard Neukum
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Organismes :
Interactions et dynamique des environnements de surface
Institut d'astrophysique spatiale
Institut d'astrophysique spatiale
Laboratoire de Planétologie et Géodynamique de Nantes [UMR 6112]
Interactions et dynamique des environnements de surface
Interactions et dynamique des environnements de surface
Institut d'astrophysique spatiale
Institut d'astrophysique spatiale
Interactions et dynamique des environnements de surface
- Publié dans Icarus le 30/10/2020
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exposition François-Xavier Fabre (Montpellier, Turin, 2007-2008)
- Type de publi. : Autre publication
- Date de publi. : 01/01/2008
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Auteurs :
Philippe Bordes
Fiche détaillée
exposition François-Xavier Fabre (Montpellier, Turin, 2007-2008)
- Type de publi. : Autre publication
- Date de publi. : 01/01/2008
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Auteurs :
Philippe Bordes
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Organismes :
Art, images, sociétés
Source
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LIG at ImageCLEF 2008, Evaluating Systems for Multilingual and Multimodal Information Access
- Type de publi. : Communication dans un congrès
- Date de publi. : 01/01/2008
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Auteurs :
Loïc MaisonnassePhilippe MulhemÉric GaussierJean-Pierre Chevallet
Fiche détaillée
LIG at ImageCLEF 2008, Evaluating Systems for Multilingual and Multimodal Information Access
- Type de publi. : Communication dans un congrès
- Date de publi. : 01/01/2008
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Auteurs :
Loïc MaisonnassePhilippe MulhemÉric GaussierJean-Pierre Chevallet
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Organismes :
Distribution, Recherche d'Information et Mobilité
Laboratoire d'Informatique de Grenoble
Modélisation et Recherche d’Information Multimédia [Grenoble]
Modélisation et Recherche d’Information Multimédia [Grenoble]
Modélisation et Recherche d’Information Multimédia [Grenoble]
Résumé : no abstract
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Soil CO2 effluxes, soil carbon balance, and early tree growth following savannah afforestation in Congo: Comparison of two site preparation treatments
- Type de publi. : Article dans une revue
- Date de publi. : 01/01/2008
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Auteurs :
Yann NouvellonDaniel EpronAntoine KinanaOliver HamelAndré MabialaRémi d'AnnunzioPhilippe DeleporteLaurent Saint‐andréClaire MarsdenOlivier RoupsardJean-Pierre BouilletJean-Paul Laclau
Fiche détaillée
Soil CO2 effluxes, soil carbon balance, and early tree growth following savannah afforestation in Congo: Comparison of two site preparation treatments
- Type de publi. : Article dans une revue
- Date de publi. : 01/01/2008
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Auteurs :
Yann NouvellonDaniel EpronAntoine KinanaOliver HamelAndré MabialaRémi d'AnnunzioPhilippe DeleporteLaurent Saint‐andréClaire MarsdenOlivier RoupsardJean-Pierre BouilletJean-Paul Laclau
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Organismes :
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Ecologie et Ecophysiologie Forestières [devient SILVA en 2018]
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
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
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Escola Superior de Agricultura Luiz de Queiroz
- Publié dans Forest Ecology and Management le 26/10/2020
Résumé : Eucalyptus plantations have been introduced since 1978 on savannah soils of the coastal plains of Congo, but there is still little information on the effect of silvicultural practices on soil organic carbon dynamics after afforestation on these savannahs. The objectives of this study were to assess the effects of two experimental site preparation treatments on soil CO2 efflux, tree growth and soil carbon balance during the first year following plantation establishment. One treatment involved mechanical soil disturbance with disk harrowing (D), whereas in the second treatment (H), savannah grasses were killed by herbicide application before planting, without mechanical soil disturbance. Soil respiration and soil water content were monitored for 1 year following treatment application, at 2-week intervals. We hypothesized that mechanical soil disturbance would increase soil CO2 efflux, but the results did not support this hypothesis. The cumulated soil CO2 efflux over 1 year was not significantly different in the two treatments and averaged 658 g C m-2. In contrast, tree growth was significantly increased by disk harrowing, maybe as a result of decreased soil penetration resistance. Carbon inputs to the soil from savannah residues (428 g C m-2) were outweighed by the annual carbon outputs through heterotrophic respiration (505 and 456 g C m-2 in the H and D treatments, respectively) leading to a slightly negative soil carbon budget in both treatments 1 year after afforestation.
Source
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Droit administratif des biens : domaine public et privé, travaux et ouvrages publics, expropriation
- Type de publi. : Ouvrage (y compris édition critique et traduction)
- Date de publi. : 01/01/2008
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Auteurs :
Jean-Marie AubyPhilippe TerneyreJean-Bernard AubyPierre Bon
Fiche détaillée
Droit administratif des biens : domaine public et privé, travaux et ouvrages publics, expropriation
- Type de publi. : Ouvrage (y compris édition critique et traduction)
- Date de publi. : 01/01/2008
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Auteurs :
Jean-Marie AubyPhilippe TerneyreJean-Bernard AubyPierre Bon
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Organismes :
Centre d’Étude et de Recherche sur le Droit Administratif et la Réforme de l’État
Université de Pau et des Pays de l'Adour
École de Droit de Sciences Po (Sciences Po)
Droit public comparé - Droit international et Droit européen
Droits International, Comparé et Européen / Institut d'études ibériques et ibérico-américaines (IE2IA)
Résumé : Manifestation du caractère dérogatoire du droit administratif, les biens de l’administration obéissent à des règles propres, qu’elles portent sur leurs statuts, leurs modes d’acquisition ou la façon d’y conduire des travaux. Maintenant dans sa quatrième édition, le Précis de Droit administratif des biens analyse les évolutions sensibles de ce droit au cours des dernières, notamment grâce à l'enrichissement du droit administratif des contrats, à la préoccupation croissante de valoriser économiquement le patrimoine public ainsi qu'aux incidences de la Convention européenne des droits de l'homme en matière d'expulsion.
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Transiting exoplanets from the CoRoT space mission. III. The spectroscopic transit of CoRoT-Exo-2b with SOPHIE and HARPS
- Type de publi. : Article dans une revue
- Date de publi. : 01/01/2008
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Auteurs :
François BouchyDidier QuelozMagali DeleuilB. LoeilletArtie P. HatzesSuzanne AigrainRoi AlonsoMichel AuvergneAnnie BaglinPierre BargeWilly BenzP. BordéHans J. DeegR. de la RezaRudolf DvorakAnders EriksonMalcolm C. FridlundPhilippe GondoinTristan GuillotGuillaume HébrardLaurent JordaHelmut LammerAlain LégerAntoine LlebariaPierre MagainMichel MayorClaire MoutouMarc OllivierM. PätzoldFrancesco PepeFrédéric PontHeike RauerDaniel RouanJean SchneiderA. H. M. J. TriaudStéphane UdryGünther Wuchterl
Fiche détaillée
Transiting exoplanets from the CoRoT space mission. III. The spectroscopic transit of CoRoT-Exo-2b with SOPHIE and HARPS
- Type de publi. : Article dans une revue
- Date de publi. : 01/01/2008
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Auteurs :
François BouchyDidier QuelozMagali DeleuilB. LoeilletArtie P. HatzesSuzanne AigrainRoi AlonsoMichel AuvergneAnnie BaglinPierre BargeWilly BenzP. BordéHans J. DeegR. de la RezaRudolf DvorakAnders EriksonMalcolm C. FridlundPhilippe GondoinTristan GuillotGuillaume HébrardLaurent JordaHelmut LammerAlain LégerAntoine LlebariaPierre MagainMichel MayorClaire MoutouMarc OllivierM. PätzoldFrancesco PepeFrédéric PontHeike RauerDaniel RouanJean SchneiderA. H. M. J. TriaudStéphane UdryGünther Wuchterl
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Organismes :
Institut d'Astrophysique de Paris
Observatoire Astronomique de l'Université de Genève
Laboratoire d'Astrophysique de Marseille
Institut d'Astrophysique de Paris
Laboratoire d'Astrophysique de Marseille
Thüringer Landessternwarte, Tautenburg Observatory
University of Exeter
Laboratoire d'Astrophysique de Marseille
Laboratoire d'études spatiales et d'instrumentation en astrophysique
Pôle Astronomie du LESIA
Laboratoire d'études spatiales et d'instrumentation en astrophysique
Pôle Astronomie du LESIA
Laboratoire d'Astrophysique de Marseille
Physikalisches Institut, Universität Bern
Institut d'astrophysique spatiale
Instituto de Astrofisica de Canarias
Observatório Nacional/MCTI
Institut für Astronomie, Universität Wien
DLR Institute of Planetary Research
Research and Scientific Support Department, ESA-ESTEC
Research and Scientific Support Department, ESA-ESTEC
Observatoire de la Côte d'Azur
Institut d'Astrophysique de Paris
Laboratoire d'Astrophysique de Marseille
Osterreichische Akademie der Wissenschaften = Académie autrichienne des sciences
Institut d'astrophysique spatiale
Laboratoire d'Astrophysique de Marseille
Université de Liège = University of Liège = Universiteit van Luik = Universität Lüttich
Observatoire Astronomique de l'Université de Genève
Laboratoire d'Astrophysique de Marseille
Institut d'astrophysique spatiale
Institut für Geophysik und Meteorologie, Universität zu Köln
Observatoire Astronomique de l'Université de Genève
Observatoire Astronomique de l'Université de Genève
DLR Institute of Planetary Research
Laboratoire d'études spatiales et d'instrumentation en astrophysique
Pôle Astronomie du LESIA
Laboratoire Univers et Théories
Observatoire Astronomique de l'Université de Genève
Observatoire Astronomique de l'Université de Genève
Thüringer Landessternwarte, Tautenburg Observatory
- Publié dans Astronomy & Astrophysics - A&A le 28/10/2020
Résumé : We report on the spectroscopic transit of the massive hot-Jupiter CoRoT-Exo-2b observed with the high-precision spectrographs SOPHIE and HARPS. By modeling the radial velocity anomaly occurring during the transit due to the Rossiter-McLaughlin (RM) effect, we determine the sky-projected angle between the stellar spin and the planetary orbital axis to be close to zero lambda = 7.2 ± 4.5 deg, and we secure the planetary nature of CoRoT-Exo-2b. We discuss the influence of the stellar activity on the RM modeling. Spectral analysis of the parent star from HARPS spectra are presented.
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Polyelectrolyte multilayer coatings that resist protein adsorption at rest and under stretching
- Type de publi. : Article dans une revue
- Date de publi. : 01/01/2008
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Auteurs :
Andreas ReischJoseph HemmerléJean-Claude VoegelEric GonthierGero DecherNadia Benkirane-JesselArmelle ChassepotDamien MertzPhilippe LavallePhilippe MésiniPierre Schaaf
Fiche détaillée
Polyelectrolyte multilayer coatings that resist protein adsorption at rest and under stretching
- Type de publi. : Article dans une revue
- Date de publi. : 01/01/2008
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Auteurs :
Andreas ReischJoseph HemmerléJean-Claude VoegelEric GonthierGero DecherNadia Benkirane-JesselArmelle ChassepotDamien MertzPhilippe LavallePhilippe MésiniPierre Schaaf
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Organismes :
Institut Charles Sadron
Biomatériaux : Processus biophysiques et biologiques aux interfaces
Biomatériaux : Processus biophysiques et biologiques aux interfaces
Institut Charles Sadron
Institut Charles Sadron
Biomatériaux : Processus biophysiques et biologiques aux interfaces
Biomatériaux : Processus biophysiques et biologiques aux interfaces
Biomatériaux : Processus biophysiques et biologiques aux interfaces
Biomatériaux : Processus biophysiques et biologiques aux interfaces
Institut Charles Sadron
Institut Charles Sadron
- Publié dans Journal of Materials Chemistry le 25/10/2020
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Microchemical imaging of iodine distribution in the brown alga Laminaria digitata suggests a new mechanism for its accumulation
- Type de publi. : Article dans une revue
- Date de publi. : 01/01/2008
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Auteurs :
Elodie Françoise VerhaegheAurélien FraysseJean-Luc Guerquin-KernTing-Di WuGuillaume DevèsCharles MioskowskiCatherine LeblancOrtega RYves AmbroisePhilippe Potin
Fiche détaillée
Microchemical imaging of iodine distribution in the brown alga Laminaria digitata suggests a new mechanism for its accumulation
- Type de publi. : Article dans une revue
- Date de publi. : 01/01/2008
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Auteurs :
Elodie Françoise VerhaegheAurélien FraysseJean-Luc Guerquin-KernTing-Di WuGuillaume DevèsCharles MioskowskiCatherine LeblancOrtega RYves AmbroisePhilippe Potin
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Organismes :
Institut de Biologie et de Technologies de Saclay
Chimie Nucléaire Analytique et Bio-environnementale
laboratoire de microscopie ionique
Imagerie intégrative de la molécule à l'organisme
laboratoire de microscopie ionique
Imagerie intégrative de la molécule à l'organisme
Chimie Nucléaire Analytique et Bio-environnementale
Institut de Biologie et de Technologies de Saclay
Station biologique de Roscoff [Roscoff]
Chimie Nucléaire Analytique et Bio-environnementale
Institut de Biologie et de Technologies de Saclay
Station biologique de Roscoff [Roscoff]
- Publié dans Journal of Biological Inorganic Chemistry le 31/10/2020
Résumé : Brown algal kelp species are the most efficient iodine accumulators among all living systems, with an average content of 1.0% of dry weight in Laminaria digitata. The iodine distributions in stipe and blade sections from L. digitata were investigated at tissue and subcellular levels. The quantitative tissue mapping of iodine and other trace elements (Cl, K, Ca, Fe, Zn, As and Br) was provided by the proton microprobe with spatial resolutions down to 2 mum. Chemical imaging at a subcellular resolution (below 100 nm) was performed using the secondary ion mass spectrometry microprobe. Sets of samples were prepared by both chemical fixation and cryofixation procedures. The latter prevented the diffusion and the leaching of labile inorganic iodine species, which were estimated at around 95% of the total content by neutron activation analysis. The distribution of iodine clearly shows a huge, decreasing gradient from the meristoderm to the medulla. The contents of iodine reach very high levels in the more external cell layers, up to 191 +/- 5 mg g(-1) of dry weight in stipe sections. The peripheral tissue is consequently the main storage compartment of iodine. At the subcellular level, iodine is mainly stored in the apoplasm and not in an intracellular compartment as previously proposed. This unexpected distribution may provide an abundant and accessible source of labile iodine species which can be easily remobilized for potential chemical defense and antioxidative activities. According to these imaging data, we proposed new hypotheses for the mechanism of iodine storage in L. digitata tissues.
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Chronic atrial fibrillation ablation impact on endocrine and mechanical cardiac functions
- Type de publi. : Article dans une revue
- Date de publi. : 01/01/2008
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Auteurs :
Frederic SacherJean-Benoît J.-B. CorcuffPhilippe SchraubValérie Le BouffosAgnès GeorgesSamuel O. JonesStéphane LafittePierre BordacharMélèze HociniJacques ClémentyMichel HaïssaguerreLaurence BordenaveRaymond RoudautPierre Jais
Fiche détaillée
Chronic atrial fibrillation ablation impact on endocrine and mechanical cardiac functions
- Type de publi. : Article dans une revue
- Date de publi. : 01/01/2008
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Auteurs :
Frederic SacherJean-Benoît J.-B. CorcuffPhilippe SchraubValérie Le BouffosAgnès GeorgesSamuel O. JonesStéphane LafittePierre BordacharMélèze HociniJacques ClémentyMichel HaïssaguerreLaurence BordenaveRaymond RoudautPierre Jais
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Organismes :
Centre Hospitalier Universitaire de Bordeaux
Psychoneuroimmunologie, nutrition et génétique
Service de médecine nucléaire
Centre Hospitalier Universitaire de Bordeaux
Centre Hospitalier Universitaire de Bordeaux
Service de médecine nucléaire
Centre Hospitalier Universitaire de Bordeaux
Centre Hospitalier Universitaire de Bordeaux
Centre Hospitalier Universitaire de Bordeaux
Centre Hospitalier Universitaire de Bordeaux
Centre Hospitalier Universitaire de Bordeaux
Centre Hospitalier Universitaire de Bordeaux
Service de médecine nucléaire
Centre Hospitalier Universitaire de Bordeaux
Centre Hospitalier Universitaire de Bordeaux
- Publié dans European Heart Journal le 30/10/2020
Résumé : *Aims : Assess the impact of persistent/permanent atrial fibrillation (AF) ablation on endocrine and mechanical cardiac functions. *Methods and results : In all, 43 patients (40 males, 53 ± 12 years) undergoing persistent/permanent AF ablation had atrial (ANP) and brain natriuretic peptide (BNP) measurements before day 1, 3, and 3 months after ablation. In the same period of time transthoracic echocardiography was performed. With a mean radiofrequency delivery of 98 ± 29 min, sinus rhythm (SR) was restored in 30 patients (70%) without DC shock. ANP decreased significantly (P < 0.001) with restoration of SR and then increased until day 3 post ablation without reaching the level observed during AF. At 3 months, ANP was significantly lower than day 3 reaching normal value in 28 (65%) patients and being <7 pg/mL in 4 (9%). The BNP followed the same trend with normal BNP level in 23 (53%) patients at 3 months. Identifiable atrial filling waves on the pulsed Doppler transmitral recordings performed between day 2 and day 4 after the procedure were seen in 18 patients (42%). At 3 months, 39 (95%) of the patients with SR during echocardiography had a significant A wave. *Conclusion : SR following persistent/permanent AF ablation is associated with a dramatic decrease in natriuretic peptides. At 3 months, despite relatively extensive atrial ablation, endocrine and mechanical cardiac functions are significantly improved.
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Initial stages of Fagus sylvatica wood colonization by the white-rot basidiomycete Trametes versicolor: Enzymatic characterization
- Type de publi. : Article dans une revue
- Date de publi. : 01/01/2008
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Auteurs :
Serge LekounougouS. MounguenguiStéphane DumarçayChristophe RosePierre-Emmanuel CourtyJean GarbayePhilippe GerardinJean-Pierre JacquotÉric Gelhaye
Fiche détaillée
Initial stages of Fagus sylvatica wood colonization by the white-rot basidiomycete Trametes versicolor: Enzymatic characterization
- Type de publi. : Article dans une revue
- Date de publi. : 01/01/2008
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Auteurs :
Serge LekounougouS. MounguenguiStéphane DumarçayChristophe RosePierre-Emmanuel CourtyJean GarbayePhilippe GerardinJean-Pierre JacquotÉric Gelhaye
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Organismes :
Interactions Arbres-Microorganismes
Interactions Arbres-Microorganismes
Laboratoire d’Etude et de Recherche sur le Matériau Bois
Ecologie et Ecophysiologie Forestières [devient SILVA en 2018]
Interactions Arbres-Microorganismes
Interactions Arbres-Microorganismes
Laboratoire d’Etude et de Recherche sur le Matériau Bois
Interactions Arbres-Microorganismes
Interactions Arbres-Microorganismes
- Publié dans International Biodeterioration and Biodegradation le 27/10/2020
Résumé : The initial stages of wood colonization and degradation by the white-rot Trametes versicolor have been investigated. T. versicolor was grown on Fagus sylvatica wood chips under solid-state fermentation in the presence of malt agar. The beginning of the colonization process was not associated with peroxidases production or hydrolytic activity. In contrast, a sharp induction of laccase expression was observed during the first colonization days. This induction is not due solely to fungal growth on wood chips since similar data were obtained in the presence of biocide (propiconazole)-treated wood, suggesting that enzyme production is due at least in part to the mycelium surrounding wood chips using nutrients from malt agar medium. Laccase production correlated with wood acetone extractives degradation, in particular with the oxidation of catechin, a major compound of beech extracts. In complementary experiments, woodextracted laccases were shown to be active with wood acetone extracts and pure catechin. Furthermore, wood extractives induced laccase expression. Taken together, these data suggest that the initial stages of wood colonization on malt agar by T. versicolor correlate with wood extractives degradation requiring laccase activity, whereas the other wood-degrading systems (peroxidases and polysaccharides hydrolases) are still repressed.
Source