Signification géodynamique des calcaires de plate-forme en cours de subduction sous l'arc des Nouvelles-Hébrides (Sud-Ouest de l'océan Pacifique)

Note présentée par Jean DercourtInternational audienceThe analysis of carbonates from New Hébrides Trench shows that three main épisodes of shallow water carbonate déposition occurred during Late Eocene,Late Oligocene-Early Miocène,Mio-Pliocene-Quaternary, controlled by eustatism and tectonic.L'analyse de carbonates issus de la fosse des Nouvelles-Hébrides a permis de reconnaître trois périodes favorables au développement de plates-formes(Éocène supérieur,Oligocène supérieur-Miocène inférieur,Mio-Pliocène-Quaternaire)contrôlé par l'eustatisme et la tectonique

Comparison of RAPD, AFLP and SSR (microsatellite) markers for genetic diversity analysis in Vitis vinifera L.

National audienc

Comparaison de marqueurs RAPD et microsatellites pour l'analyse de la diversité génétique chez Vitis vinifera

National audienc

ISIFC - Dual Biomedical Engineering School

International audienceThe Superior Institute for Biomedical Engineering (ISIFC), created in 2001, is part of the Franche-Comte University and is accredited by the French Ministry of National Education. Its originality lies in its innovative course of studies, which trains engineers in the scientific and medical fields to get both competencies. The Institute therefore collaborates with the University Hospital Centre of Besancon (CHU), biomedical companies and National Research Centres (CNRS and INSERM). The dual expertise trainees will have acquired at the end of their 3 years course covers medical and biological skills, scientific and Technical expertises. ISIFC engineers answer to manufacturer needs for skilled scientific and technical staff in instrumentation and techniques adapted to diagnosis, therapeutics and medical control, as well as the needs of potential users for biomedical devices, whether they are doctors, hospital staff, patients, laboratories, etc... Both the skills and the knowledge acquired by an ISIFC engineer will enable him/her to fulfil functions of study, research and development in the industrial sector

Identification and mapping of RAPD and RFLP markers linked to a fertility restorer gene for a new source of cytoplasmic male sterility in Beta vulgaris ssp. maritima

International audienc

Paleontological Results from Ocean Drilling Program Leg 101

Leg 101 of the Ocean Drilling Program recovered Albian through Holocene sediments from a variety of carbonate depositional environments. Data from four microplanktonic groups (calcareous nannofossils, planktonic foraminifers, radiolarians, and dinoflagellates) and four benthic groups (larger foraminifers, smaller benthic foraminifers, ostracodes, and sponge spicules) yield a biostratigraphic and paleoecologic framework for these varied sediments. Winnowed, skeletal-planktonic foraminiferal packstones and grainstones from the central Straits of Florida (Site 626) reflect a late Oligocene to Holocene history of sporadic sedimentation greatly influenced by strong bottom-current activity. Neogene to Quaternary sediments from two carbonate-slope transects (Sites 627 to 633) indicate significant slope accretion and progradation during the latest Miocene through early Pliocene, erosion and/or nondeposition during part of the late Pliocene, and slower accretion and slope progradation during the Quaternary. The Turonian through late Oligocene of the Little Bahama Bank area (Sites 627 and 628) was characterized by sporadic pelagic carbonate sedimentation punctuated by lengthy hiatuses in sediment accumulation, indicating sediment starvation and low surface-water productivity. Brief periods of siliceous biogenic sedimentation in the northwestern Bahamas during the late Oligocene, early Miocene, middle Eocene, and late Campanian are expressions of temporarily higher surface water fertility and productivity. Uppermost Albian through middle Cenomanian hemipelagic marly limestones at Site 627 (Little Bahama Bank) record an upward-deepening sequence developed over a drowned upper Albian shallow-water carbonate platform. Bathyal middle to upper Albian organic-rich marly chalks in Northeast Providence Channel (Site 635) indicate that a deep-water channel existed there at approximately the same time that shallow-water carbonate-platform conditions prevailed north of Little Bahama Bank (Site 627)

RF-interferences generate chaotic GHz FM - Carrier for communications

International audienceFollowing the principle of a highly nonlinear delay oscillator, we demonstrate the generation of an RF chaotic frequency modulated carrier, which could be used in chaos based communication systems. The nonlinear process is provided by the transfer function of an RF interferometer, modulating the amplitude of an FM signal; for this purpose, the path difference required for the interference process, as well as a long delay required for complex chaotic oscillation, are designed through the use of optical fibers. The RF signal used to produce interferences is transposed in the optical domain by a direct laser modulation with the gigahertz chaotic FM signal. The interferences is obtained at fiber outputs terminated by photodiodes for backconversion of the RF signal into the electrical domain. Experimental results reporting the particular dynamical behavior of the nonlinear delay RF oscillator are presented, and also discussed in terms of chaos communication applications