Laser spectroscopic real time measurements of methanogenic activity under simulated Martian subsurface analog conditions
نویسندگان
چکیده
منابع مشابه
Organic degradation under simulated Martian conditions.
We report on laboratory experiments which simulate the breakdown of organic compounds under Martian surface conditions. Chambers containing Mars-analog soil mixed with the amino acid glycine were evacuated and filled to 100 mbar pressure with a Martian atmosphere gas mixture and then irradiated with a broad spectrum Xe lamp. Headspace gases were periodically withdrawn and analyzed via gas chrom...
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Spacecraft launched to Mars can retain viable terrestrial microorganisms on board that may survive the interplanetary transit. Such biota might compromise the search for life beyond Earth if capable of propagating on Mars. The current study explored the survivability of Psychrobacter cryohalolentis K5, a psychrotolerant microorganism obtained from a Siberian permafrost cryopeg, under simulated ...
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Lacour, B. Sallé, R. Brennetot, , E. Vors, P. Fichet, A. Rivoallan, C. Fabre, J. Dubessy, S. Maurice, R. C. Wiens, D. A. Cremers. Laboratoire d’Analyse par Laser et d’Etude des Surfaces (CEA, 91191 Gif sur Yvette, France, [email protected]), Centre de Recherche de la Géologie de l’Uranium (Univ. Henri Poincaré, 54506, Vandœuvre les Nancy, France, [email protected]), Laboratoir...
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Face recognition is an active area of research since 1980s. It is one of the most successful and important applications of image analysis and processing. Eigenface approach is one of the earliest appearance-based face recognition methods, which was developed by M. Turk and A. Pentland in 1991 [1]. This method utilizes the idea of the Principal Component Analysis (PCA) which decomposes a face im...
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In this paper we report on the development of a sensor for real time monitoring of laser welding processes based on spectroscopic techniques. The system is based on the acquisition of the optical spectra emitted from the laser generated plasma plume and their use to implement an on-line algorithm for both the calculation of the plasma electron temperature and the analysis of the correlations be...
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ژورنال
عنوان ژورنال: Planetary and Space Science
سال: 2014
ISSN: 0032-0633
DOI: 10.1016/j.pss.2013.08.019