Organics in environmental ices: sources, chemistry, and impacts

International audienceThe physical, chemical, and biological processes involving organics in ice in the environment impact a number of atmospheric and biogeochemical cycles. Organic material in snow or ice may be biological in origin, deposited from aerosols or atmospheric gases, or formed chemically in situ. In this manuscript, we review the current state of knowledge regarding the sources, properties, and chemistry of organic materials in environmental ices. Several outstanding questions remain to be resolved and fundamental data gathered before an accurate model of transformations and transport of organic species in the cryosphere will be possible. For example, more information is needed regarding the quantitative impacts of chemical and biological processes, ice morphology, and snow formation on the fate of organic material in cold regions. Interdisciplinary work at the interfaces of chemistry, physics and biology is needed in order to fully characterize the nature and evolution of organics in the cryosphere and predict the effects of climate change on the Earth's carbon cycle

Thermal desorption of interstellar ices: a review on the controlling parameters and their implications from snowlines to chemical complexity

Laboratory astrophysics and astrochemistr

Molecular simulation studies of the adsorption of nitrate on the surface of ice

International audienc

Serum C-reactive protein (CRP) and procalcitonin (PCT) levels and kinetics in patients with leptospirosis

International audienc

Forges de Gueugnon (71): impact du crassier et des rejets sur les eaux souterraines et superficielles (1ere phase: janvier a juin 1981)

Comite: Milieux physiques: EauAvailable from Centre de Documentation Scientifique et Technique, CNRS, 26 rue Boyer, 75971 Paris Cedex 20 (France) / INIST-CNRS - Institut de l'Information Scientifique et TechniqueSIGLEFRFranc