Disk-resolved spectral reflectance properties of Phobos from 0.3-3.2 micron: Preliminary integrated results from Phobos 2

The Phobos 2 mission provided multispectral observations of Phobos over a large wavelength range and with relatively high spectral resolution. Here, researchers integrate results from three multispectral detectors by determining the ultraviolet-visible near infrared spectral properties of color and brightness features recognized in VSK TV images. Researchers present evidence that there are two fundamental spectral units within the region of overlapping coverage by the detectors. They describe the units' spectral and reflectance properties and discuss the implications of these results for the composition of Phobos

Claudine Drame, Des films pour le dire, reflets de la Shoah au cinéma 1945-1985

L’année 2007 a été marquée par la sortie de deux ouvrages relatifs à la représentation au cinéma du génocide des Juifs d’Europe : celui de Claudine Drame et Le cinéma et la Shoah, un art à l’épreuve de la tragédie du XXe siècle, coordonné par Jean-Michel Frodon aux éditions Cahiers du Cinéma. Ces deux livres partent du même principe : jeter un regard rétrospectif sur des dizaines d’années de représentation des crimes génocidaires nazis au cinéma, en concluant sur la suprématie du film Shoah d..

Implementation of ultrasonic sensing for high resolution measurement of binary gas mixture fractions

We describe an ultrasonic instrument for continuous real-time analysis of the fractional mixture of a binary gas system. The instrument is particularly well suited to measurement of leaks of a high molecular weight gas into a system that is nominally composed of a single gas. Sensitivity < 5 × 10−5 is demonstrated to leaks of octaflouropropane (C3F8) coolant into nitrogen during a long duration (18 month) continuous study. The sensitivity of the described measurement system is shown to depend on the difference in molecular masses of the two gases in the mixture. The impact of temperature and pressure variances on the accuracy of the measurement is analysed. Practical considerations for the implementation and deployment of long term, in situ ultrasonic leak detection systems are also described. Although development of the described systems was motivated by the requirements of an evaporative fluorocarbon cooling system, the instrument is applicable to the detection of leaks of many other gases and to processes requiring continuous knowledge of particular binary gas mixture fractions

At the innate frontiers between mother and fetus: linking abortion with complement activation

The intricate mechanisms regulating fetomaternal interactions are still largely uncharacterized. Recent papers have revealed a major role for the innate immune system during abortion. Different experimental conditions—deletion of a complement regulator, injection of anti-phospholipid antibodies into mothers, or allorecognition of fetuses in the presence of an IDO inhibitor—all lead to complement activation, inflammation, and fetal loss. These observations also raise new questions on the relationship between the adaptive and innate systems during pregnancy

Two Years of Sulfate Mapping in Valles Marineris and Terra Meridiani as Seen by OMEGA/Mars Express

International audienc

New hybrid membranes for fuel cells: Plasma treated laponite based sulfonated polysulfone

International audienceSulfonated laponite particles were used to prepare polysulfone and sulfonated polysulfone composite membranes for fuel cell application. The styrene sulfonic acid groups of laponite were obtained by polymerizing the monomer after laponite activation with a He cold plasma. Membranes with different contents in modified laponite were prepared. The water retention properties of these membranes were investigated by using water pervaporation and water vapour sorption measurements. The incorporation of hydrophilic laponite increased the tortuosity path in diffusion and the quantity of water sorbed in the membranes. A study of the dynamic aspect of these measurements was carried out and the diffusion coefficients were calculated at different characteristic times. Sulfonated polysulfone membrane gave a proton conductivity of 0.09 S cm(-1). After the addition of modified laponite the conductivity was significantly increased to 25% leading to membrane of correct conductivity for fuel cell use. (C) 2010 Elsevier B.V. All rights reserved

New hybrid membranes for fuel cells: Plasma treated laponite based sulfonated polysulfone

International audienceSulfonated laponite particles were used to prepare polysulfone and sulfonated polysulfone composite membranes for fuel cell application. The styrene sulfonic acid groups of laponite were obtained by polymerizing the monomer after laponite activation with a He cold plasma. Membranes with different contents in modified laponite were prepared. The water retention properties of these membranes were investigated by using water pervaporation and water vapour sorption measurements. The incorporation of hydrophilic laponite increased the tortuosity path in diffusion and the quantity of water sorbed in the membranes. A study of the dynamic aspect of these measurements was carried out and the diffusion coefficients were calculated at different characteristic times. Sulfonated polysulfone membrane gave a proton conductivity of 0.09 S cm(-1). After the addition of modified laponite the conductivity was significantly increased to 25% leading to membrane of correct conductivity for fuel cell use. (C) 2010 Elsevier B.V. All rights reserved

ChemCam Remote Microscopic Imager (RMI) Onboard Curiosity : Results of the First Three Months on Mars

Upprättat; 2013; 20150701 (ninhul

A proposed lung ultrasound and phenotypic algorithm for the care of COVID-19 patients with acute respiratory failure

International audiencePulmonary complications are the most common clinical manifestations of coronavirus disease (COVID-19). From recent clinical observation, two phenotypes have emerged: a low elastance or L-type and a high elastance or H-type. Clinical presentation, pathophysiology, pulmonary mechanics, radiological and ultrasound findings of these two phenotypes are different. Consequently, the therapeutic approach also varies between the two. We propose a management algorithm that combines the respiratory rate and oxygenation index with bedside lung ultrasound examination and monitoring that could help determine earlier the requirement for intubation and other surveillance of COVID-19 patients with respiratory failure