30 research outputs found
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No full textOMANI Rania (Née le 19 juillet 1968 à Manosque) Artiste peintre. elle étudie quelques mois à l’école supérieure des beaux-arts de Paris. elle voyage dans de nombreux pays d’Afrique de l’Ouest, d’Asie et d’Amérique du Sud. «Mêlant au plaisir du dessin et de la peinture l’aventure de la gravure et de la marqueterie, Rania colle, sculpte, scie et cloue avec la jubilation de la création première (...) De loin, les grands panneaux de bois peints s’offrent à un regard plus large où l ’a..
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No full textOMANI Rania (Née le 19 juillet 1968 à Manosque) Artiste peintre. elle étudie quelques mois à l’école supérieure des beaux-arts de Paris. elle voyage dans de nombreux pays d’Afrique de l’Ouest, d’Asie et d’Amérique du Sud. «Mêlant au plaisir du dessin et de la peinture l’aventure de la gravure et de la marqueterie, Rania colle, sculpte, scie et cloue avec la jubilation de la création première (...) De loin, les grands panneaux de bois peints s’offrent à un regard plus large où l ’a..
Chemical Evolution in the Substrate due to oxidation: A Numerical Model with Explicit Treatment of Vacancy Fluxes
No full textTo get a better understanding of oxidation behavior of Ni-base alloys in PWR primary water, a numerical model for oxide scale growth has been developed. The final aim of the model is to estimate the effects of possible changes of experimental conditions. Hence, our model has not been restricted by the classical hypothesis of quasi-steady state and can consider transient stages. The model calculates the chemical species concentration profiles, but also the vacancy concentration profiles evolution in the oxide and in the metal as a function of time. It treats the elimination of the possible supersaturated vacancies formed at the metal/oxide interface by introducing a dislocation density at the interface and in the metal bulk. This latter density can be related to the cold-working state. Its effect on the vacancy profile evolution is studied in the case of a pure metal. Eventually an extension of the present model to the oxidation of Ni-base alloys is discussed regarding a recent vacancy diffusion model adjusted on Ni-base alloys
Development of a highly transparent fluorescent optical sensor for transverse positioning of multiple elements with respect to a reference laser beam
No full textA new type of highly transparent (95%) two dimensional position sensor has been developed which allows the accurate positioning (below 10 mu m r.m.s.) of successive elements to which each sensor is attached, transversely to a laser beam used as a reference straight line. The present useful area of the sensor is about 15*15 mm/sup 2/, and can be further increased. (3 refs)
Lock-in detection using a cryogenic low noise current preamplifier for the readout of resistive bolometers
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The SOX experiment hunts the sterile neutrino
No full textThe SOX (Short distance neutrino Oscillations with BoreXino) experiment aims to perform a resolutive measurement for testing the longstanding hypotesis of a sterile neutrino in the eV2 mass scale. A very intense and well calibrated 144Ce−144 Pr antineutrino source will be placed under the large size and very low background Borexino detector at Laboratori Nazionali del Gran Sasso in Italy. Borexino demonstrated a such energy and position resolution that the disappearance experiment can be performed and the short distance oscillations might be directly observed. In this paper an overview of the key elements of the experiment is given and the expected sensitivity to determine the sterile neutrino mass is shown
The SOX experiment hunts the sterile neutrino
No full textThe SOX (Short distance neutrino Oscillations with BoreXino) experiment aims to perform a resolutive measurement for testing the longstanding hypotesis of a sterile neutrino in the eV2 mass scale. A very intense and well calibrated 144Ce−144 Pr antineutrino source will be placed under the large size and very low background Borexino detector at Laboratori Nazionali del Gran Sasso in Italy. Borexino demonstrated a such energy and position resolution that the disappearance experiment can be performed and the short distance oscillations might be directly observed. In this paper an overview of the key elements of the experiment is given and the expected sensitivity to determine the sterile neutrino mass is shown
