O. Martineau

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Construction of the first stage of the Pierre Auger Observatory has begun. The aim of the Observatory is to collect unprecedented information about cosmic rays above 10 18 eV: The first phase of the project, the construction and operation of a prototype system, known as the engineering array, has now been completed. It has allowed all of the subsystems that(More)
Frog endplates were studied with the scanning electron microscope following the removal of the presynaptic terminal by collagenase and acid treatments. Endplates had 2-14 branches of primary cleft. The longest branches were parallel to the muscle fiber. Short branches oblique or perpendicular to the muscle fiber were also present near the central region of(More)
The EDELWEISS experiment has improved its sensitivity for the direct search for WIMP dark matter. In the recoil energy range relevant for WIMP masses below 10 TeV/c 2 , no nuclear recoils were observed in the fiducial volume of a heat-and-ionization cryogenic Ge detector operated in the low-background environment of the Laboratoire Souterrain de Modane in(More)
The EDELWEISS collaboration has performed a direct search for WIMP dark matter using a 320 g heat-and-ionization cryogenic Ge detector operated in a low-background environment in the Laboratoire Souterrain de Modane. No nuclear recoils are observed in the fiducial volume in the 30-200 keV energy range during an effective exposure of 4.53 kg·days. Limits for(More)
This paper describes a tool for browsing video sequences. It is based on an automatic decomposition of the sequence into a number of consecutive shots. For each shot, a representative image is constructed and assigned a hypermedia link to the original video. The images are presented to the user as a document that can be browsed. Selecting an image leads to(More)
We present here the principles of detection of Weakly Interacting Massive Particles , which could represent a large contribution to Dark Matter. A status of the experimental situation is given both for indirect and direct detection. In particular , the DAMA claim for a WIMP signal is confronted to the recent results of the CDMS and EDELWEISS experiments. We(More)
SICANE is a neutron scattering multidetector facility for the determination of the quenching factor (ratio of the response to nuclear recoils and to electrons) of cryogenic detectors used in direct WIMP searches. Well colli-mated monoenergetic neutron beams are obtained with inverse (p, n) reactions. The facility is described, and results obtained for the(More)
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