Éditeur(s) : HAL CCSD CRC Press Taylor & Francis Group
Résumé : aucun
Water-Rock Interaction XIII

hal-00857370
https://hal.archives-ouvertes.fr/hal-00857370

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
The Jurassic Mirdita ophiolite crops out in the western branch of the Hellenide-Dinaride ophiolite belt in the Balkan Peninsula; it represents a remnant of the Tethyan oceanic lithosphere developed between the Apulian and Pelagonian microcontinents. Emplaced during the Cretaceous on the western margin of Pelagonia, the Mirdita ophiolite was involved in southwestward thrusting of the Hellenide-Dinaride tectonic units during the Eocene alpine tectonics. It was little affected, however, by these alpine events as marked by nearly horizontal Cretaceous limestone deposits overlying the ophiolite. A continuous section of Middle Jurassic oceanic crust, including thin gabbros, a N-S-trending sheeted dike complex, and extrusive rocks, is exposed in the central part of the ophiolite and thickens eastward within a regional, N-S-trending synform. Peridotite massifs exposed along the western and eastern edges of this synform show major structural and petrological differences. The eastern ultramafic domain has a harzburgitic mantle exhibiting a high-temperature asthenospheric foliation dipping steeply to moderately to the west. Major chromite deposits are restricted to these eastern ultramafic massifs. The western ultramafic domain has a zoned mantle, with asthenospheric harzburgite exposed at its western margin, progressively replaced eastward by plagioclase-peridotites that were highly strained at low temperatures, and that are bounded by amphibole-peridotites along with crustal rocks. The occurrence of plagioclase is ascribed to melt impregnation processes that occurred immediately before or during intense lithospheric deformation. The gabbros in the eastern massifs are thicker (1-2 km and layered, whereas they are highly thin and discontinuous in the western massifs. Mantle peridotites of the western massifs locally are in direct contact with the overlying diabase and volcanic rocks along ductile shear zones. Development of epidote-amphibolite facies metamorphism in upper-crustal rocks was produced by hydrothermal alteration in the oceanic realm, and was intense and widespread in the western domain. The Mirdita ophiolite likely originated in a short-lived, narrow ocean basin, which was closed during the Middle Jurassic by eastward overthrusting of the western domain, and westward subduction of the eastern domain. This constrictional phase was followed by dextral oblique convergence between the Pelagonian and Apulian microcontinents. This model implies a parautochtonous origin of the Mirdita ophiolite between these two microcontinents.
ISSN: 0020-6814

hal-00456063
https://hal.archives-ouvertes.fr/hal-00456063
DOI : 10.1080/00206810902823982

Éditeur(s) : HAL CCSD CRC Press Taylor & Francis Group
Résumé : In the chapter : Role of water-rock-gas interaction in sequestration of CO2
Water-Rock Interaction XIII

ISBN : 978-0415604260
hal-00855782
https://hal.archives-ouvertes.fr/hal-00855782

Éditeur(s) : HAL CCSD Taylor & Francis Open
Résumé : International audience
Our recent findings indicate that cells exposed to transmembrane (m-CD95L) or metalloprotease-cleaved CD95L (cl-CD95L) undergo a localized Ca(2+)entry that not only inhibits the initial steps of the CD95-mediated apoptotic signal but also promotes cell motility. Based on recent findings published on the non-apoptotic signals induced by CD95, we discuss how m-CD95L and cl-CD95L diverging by their stoichiometry could both contribute to the immune response by first recruiting activated T lymphocytes in the inflamed area and later by eliminating infected and transformed cells.
ISSN: 1942-0889

hal-00873761
https://hal.archives-ouvertes.fr/hal-00873761
https://hal.archives-ouvertes.fr/hal-00873761/document
https://hal.archives-ouvertes.fr/hal-00873761/file/The_CD95_signaling_pathway-accepted.pdf
DOI : 10.4161/cib.18888

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
ISSN: 0985-3111

hal-00325456
https://hal.archives-ouvertes.fr/hal-00325456

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
The functional organization of the circadian system and the location of the main circadian oscillators vary through phylogeny. Present study investigates by in situ hybridization the anatomical location of the clock gene gPer1b in forebrain and midbrain, pituitary, and in two peripheral locations, the anterior intestine and liver, in a teleost fish, the goldfish (Carassius auratus). Moreover, the daily expression profiles of this gene were also studied by quantitative Real Time-PCR. Goldfish were maintained under a 12L–12D photoperiod and fed daily at 2 h after lights were switched on. A wide distribution of gPer1b mRNA in goldfish brain and pituitary was found in telencephalon, some hypothalamic nuclei (including the homologous to mammalian SCN), habenular nucleus, optic tectum, cerebellum and torus longitudinalis. Moreover, gPer1b expression was observed, for the first time in teleosts, in the pituitary, liver and anterior intestine. Day/night differences in gper1b mRNA abundance were found by in situ hybridization, with higher signal at nighttime that correlates with the results obtained by RT-PCR, where a rhythmic gPer1b expression was found in all tissues with acrophases at the end of the night. Amplitudes of gper1b rhythms vary among tissues, being higher in liver and intestine than in the brain, maybe because different cues entrain clocks in these locations. These results support the existence of functional clocks in many central and peripheral locations in goldfish coordinated, ticking at the same time
ISSN: 0742-0528

hal-01197353
https://hal-univ-rennes1.archives-ouvertes.fr/hal-01197353
DOI : 10.3109/07420528.2015.1049615
PUBMED : 26171989

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé :  
We compared floral odour profiles among populations of two Arum species which show different degrees of specificity for their fly pollinators. Insects were collected from inflorescences in four populations of Arum italicum and two populations of Arum maculaturn. In six Arum populations, we compared inflorescences odour profiles collected by Solid Phase Micro Extraction (SPME) and analysed by gas chromatography. We confirmed that from a pollination point of view, A. italicum is an opportunist species, as it is mainly pollinated by insects of the families Psychodidae, Chironomidae and Sciaridae, whereas A. maculatum is a specialist species, as it is 90% pollinated by Psychodidae. In all populations, Arum italicum was less attractive to pollinators than Arum maculatum. Floral odour profiles of A. italicum were not geographically structured among populations, suggesting a high gene flow or adaptation to a fluctuant guild of pollinators. On the contrary, odour profiles of A. maculatum varied between the two populations studied suggesting a lower gene flow or adaptation to different local pollinator preferences
ISSN: 0037-9271

hal-01019003
https://hal.archives-ouvertes.fr/hal-01019003

Éditeur(s) : HAL CCSD Taylor & Francis (Routledge)
Résumé : International audience
Border areas are particular “hot spots” generating high levels of HIV vulnerability and facing great challenges to control epidemics. The objective of this study is to describe the sociodemographic, clinical and biological profiles of newly HIV diagnosed people at the French Guiana - Suriname border, to construct an HIV care cascade and compare it with the Surinamese one. HIV-patients aged over 15 years newly diagnosed in western French Guiana in 2011 and 2012 were included in a retrospective cohort study. Patients were identified using different sources (n=121). The male-to-female ratio was 0.8, 85% of the patients were of foreign origin, 72% were undocumented migrants, 21% were living in Suriname and 48% had baseline CD4 cell counts <200 cells/mm3. After one year, 34% were lost to follow-up, 54% received treatment, 34% had controlled viremia and 6% died. We observed a disappointing HIV cascade, like that of Suriname, requiring to develop a coordinated healthcare offer on both sides of the border. Targeted efforts through a bi-national collaboration are needed to address the specific issues of cross-border patients to reach the 90*3 UNAIDS’s diagnosis, link to care and treatment targets and better control the local epidemic
ISSN: 0954-0121

inserm-01476267
http://www.hal.inserm.fr/inserm-01476267
http://www.hal.inserm.fr/inserm-01476267/document
http://www.hal.inserm.fr/inserm-01476267/file/2017%20Jaries%20-%20Population%20movements%20and%20the%20HIV%20cascade-1.pdf
DOI : 10.1080/09540121.2017.1291899

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
ISSN: 1028-6020

hal-01095384
https://hal-agroparistech.archives-ouvertes.fr/hal-01095384
DOI : 10.1021/np1001412

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
ISSN: 1023-6244

hal-01310543
https://hal-univ-perp.archives-ouvertes.fr/hal-01310543
DOI : 10.1080/10236244.2016.1157929

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
The aim of the present study was to determine whether the use of claimed and behavioural self-handicaps and theircorrelates differed across experimentally manipulated motivational climates. Fifty-six competitive basketball playersparticipated in the study. A crossover design was used, such that all participants completed the experimental task (i.e., atest of basketball skill) in both mastery and performance climates. Analyses of variance showed that claimed self-handicapswere used more in the performance than the mastery condition but only for the men. In addition, greater behavioral self-handicapping occurred in the performance than the mastery climate. Contrary to expectation, neither type of self-handicapwas related to performance on the basketball task in either climate. These findings reinforce the conceptual distinctionbetween claimed and behavioural self-handicaps and suggest that individual and environmental factors may differentiallyinfluence each type of handicap.
ISSN: 1746-1391

Droits : info:eu-repo/semantics/OpenAccess
hal-01343256
https://hal.univ-antilles.fr/hal-01343256
https://hal.univ-antilles.fr/hal-01343256/document
https://hal.univ-antilles.fr/hal-01343256/file/EJSS%2007-085%20Self-handicapping%20and%20Motivational%20Climate%20HAL.pdf
DOI : 10.1080/17461390902780437

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
ISSN: 0233-1934

hal-00507808
https://hal.archives-ouvertes.fr/hal-00507808

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
o abstract
ISSN: 0360-2532

hal-01485263
https://hal-univ-rennes1.archives-ouvertes.fr/hal-01485263

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
ternational Ocean Discovery Program (IODP) Expedition 352 recovered a high-fidelity record of volcanism related to subduction initiation in the Bonin fore-arc. Two sites (U1440 and U1441) located in deep water nearer to the trench recovered basalts and related rocks; two sites (U1439 and U1442) located in shallower water further from the trench recovered boninites and related rocks. Drilling in both areas ended in dolerites inferred to be sheeted intrusive rocks. The basalts apparently erupted immediately after subduction initiation and have compositions similar to those of the most depleted basalts generated by rapid sea-floor spreading at mid-ocean ridges, with little or no slab input. Subsequent melting to generate boninites involved more depleted mantle and hotter and deeper subducted components as subduction progressed and volcanism migrated away from the trench. This volcanic sequence is akin to that recorded by many ophiolites, supporting a direct link between subduction initiation, fore-arc spreading, and ophiolite genesis.
ISSN: 0020-6814

hal-01685628
https://hal.archives-ouvertes.fr/hal-01685628
DOI : 10.1080/00206814.2016.1276482

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
The pollination of the genus Arum (Araceae) is mainly achieved by deception, the floral odour mimicking the pollinator ovipositing site. In order to discover the sensory organs involved in this attraction, we have studied the antennae of five species of psychodine moth-flies (former Psychoda sensu lato=Psychodini), pollinators of Arum spp. The antennae of the five Psychodini reveal seven types of sensilla: multiporous tribranched sensilla basiconica (sensilla ascoidea), multiporous sensilla basiconica, multiporous sensilla coeloconica, multiporous sensilla auricillica, uniporous sensilla basiconica, aporous sensilla chaetica, aporous Böhm’s sensilla. Each species possesses three, five or six of these sensillum types. All the multiporous sensilla are probably olfactory receptors while the uniporous sensilla basiconica must possess a contact chemoreceptive function. The multiporous tribranched sensilla basiconica (s. ascoidea), present in all the species, are the best candidates for the reception of the odours given off by the ovipositing sites and the inflorescences of Arum. The multiporous sensilla basiconica and the multiporous sensilla coeloconica may be involved respectively as CO2 receptors or thermoreceptors. Psychoda phalaenoides, which is the main pollinator of A. maculatum, is the species which possesses the largest number of antennal sensilla. The sexual dimorphism, studied only in Psycha grisescens, as concerns the number of sensilla and the absence of a sensillum type which differ according to sex, is difficult to interpret.
ISSN: 0037-9271

hal-01096881
https://hal-agroparistech.archives-ouvertes.fr/hal-01096881

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
This work evaluates the influence of three different intensities of refinement of sisal pulp and the effect of accelerated aging cycles on the behavior of composites. Fiber-cements were prepared by the slurry de-watering method and pressing as a crude simulation of the Hatschek process. Mechanical behavior of composites was evaluated by four-point bending test at 28 days, and after 50 and 100 wet/dry cycles. Refinement of pulp and aging have increased the strength and bulk density of composites and decreased the toughness and porosity. The best mechanical performance after aging was achieved for samples with highly refined fibers.
ISSN: 1042-6914

hal-00809817
https://hal.univ-antilles.fr/hal-00809817
DOI : 10.1080/10426910601062065

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
INTRODUCTION: The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor historically known for regulating expression of several important drug-detoxifying proteins. Besides drug metabolism pathways, cytokines have been recently recognized as targeted by the AhR signaling cascade, which may contribute to toxicity and changes in xenobiotic detoxification caused by AhR agonists. AREAS COVERED: This article summarizes the nature of the main cytokines regulated by AhR ligands and reviews their involvement in toxic effects of AhR ligands, especially in relation with inflammation. The article also discusses the potential implications for drug detoxification pathways. EXPERT OPINION: Even if various cytokines, including inflammatory ones, have already been demonstrated to constitute robust targets for AhR, the exact role played by AhR with respect to inflammation remains to be determined. Further studies are also required to better characterize the molecular mechanisms implicated in regulation of cytokines by AhR ligands and to determine the role that may play AhR-targeted cytokines in alteration of xenobiotic detoxification. Finally, changes in cytokine receptor expression triggered by AhR ligands have additionally to be taken into account to better and more extensively comprehend the role played by AhR in the cytokine/inflammation area.
ISSN: 1742-5255

inserm-00831662
http://www.hal.inserm.fr/inserm-00831662
DOI : 10.1517/17425255.2013.738194
PUBMED : 23230817

Éditeur(s) : HAL CCSD Taylor & Francis: STM, Behavioural Science and Public Health Titles
Résumé : International audience
The dislocation microstructures in a single crystal of olivine deformed experimentally in uniaxial compression at 1090 °C and under a confining pressure of 300 MPa, have been investigated by transmission electron tomography in order to better understand deformation mechanisms at the microscale relevant for lithospheric mantle deformations. Investigation by electron tomography reveals microstructures, which are more complex than previously described, composed of and dislocations commonly exhibiting 3D configurations. Numerous mechanisms such as climb, cross-slip, double cross-slip as well as interactions like junction formations and collinear annihilations are the source of this complexity. The diversity observed advocates for microscale deformation of olivine significantly less simple than classic dislocation creep reported in metals or ice close to melting temperature. Deciphering mechanism of hardening in olivine at temperatures where ionic diffusion is slow and is then expected to play very little role is crucial to better understand and thus model deformation at larger scale and at temperatures (900–1100 °C) highly relevant for the lithospheric mantle.
ISSN: 1478-6443

hal-01667146
https://hal.archives-ouvertes.fr/hal-01667146
DOI : 10.1080/14786435.2017.1367858

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
The aim of this note consists in studying the solvability of the following problem find xA such that yT(x) T is a maximal monotone operator and A a subspace of a real Hilbert space H.
ISSN: 0163-0563

hal-00779243
https://hal.univ-antilles.fr/hal-00779243
DOI : 10.1080/01630569508816642

Éditeur(s) : HAL CCSD Taylor & Francis
Résumé : International audience
We review our recent formulation of Colombeau-type algebras as Hausdorff sequence spaces with ultranorms, defined by sequences of exponential weights. We extend previous results and give new perspectives related to echelon-type spaces, possible generalizations, asymptotic algebras, concepts of association, and applications thereof.
ISSN: 1065-2469

hal-00758570
https://hal.univ-antilles.fr/hal-00758570
https://hal.univ-antilles.fr/hal-00758570/document
https://hal.univ-antilles.fr/hal-00758570/file/0705.2739v1.pdf
DOI : 10.1080/10652460500437807