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	Provedor de dados ArchiMer (2) Autor Mille, G (2) Azoulay, E. (1) Bertrand, J (1) Blanc, F (1) Bonin, P (1) Colin, H. (1) Dou, H. (1) Dubreuil, J. (1) Esteves, J (1) Giusti, G (1) Mais... Palavra-chave Bacteria (1) Biodégradation (1) Biogeochemistry (1) Comparative studies (1) Denitrification (1) Environmental conditions (1) Experimental research (1) Hydrocarbures (1) MED (1) Metabolism (1) Methodology (1) Nitrates (1) Nitrogen cycle (1) Oil pollution (1) Pollutions pétrolières (1) Populations bactériennes mixtes (1) Reduction (1) Sediment chemistry (1) Sédiments côtiers méditerranéens (1) Mais... Tipo do documento Text (2) Ano 1984 (1) 1982 (1) País France (2) Idioma Francês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Evolution des hydrocarbures et activité bactérienne dans les sédiments côtiers méditerranéens ArchiMer Azoulay, E.; Dubreuil, J.; Colin, H.; Dou, H.; Mille, G; Giusti, G. The evolution of the hydrocarbons in the marine sediments of the mediterranean coast was studied by two different but complementary methods. In the first part of this study we describe results obtained through a technique specially adapted to sediments. It leads to a relatively accurate and reproducible determination of the hydrocarbon concentrations in sediments collected at many sites of the mediterranean coast polluted or not by chroni­cal petroleum inpout (Brusc lagoon, zones of Embiez, Fos, Carry-le-Rouet, and Etang de Berre). The hydrocarbon concentrations in the non-polluted sediments are always inferior to 300 mg/kg of dry sediment with important variations according to seasons (x 4 during winter). In the polluted sediments the hydrocarbon... Tipo: Text Palavras-chave: Hydrocarbures; Sédiments côtiers méditerranéens; Populations bactériennes mixtes; Pollutions pétrolières; Biodégradation. Ano: 1982 URL: http://archimer.ifremer.fr/doc/00306/41751/40962.pdf Reduction du nitrate dans les sediments marins. Comparaison des activites mesurees in vitro et in situ ArchiMer Esteves, J; Bonin, P; Blanc, F; Mille, G; Bertrand, J. In vitro nitrate reduction in hydrocarbon-polluted marine sediments has been studied by flow-through system. By analysing the rate of nitrate comsumption as a function of nitrate concentration the authors determined the Michaelis-Menten kinetics parameters. (km = 330 mu M; vax = 2.0 mu M/g super(-1)/h super(-1). The authors found a value of 60 mu M/m super(-2)/h super(-1) for the rate of in vitro nitrate consumption derived from the above kinetic parameters and from the nitrate concentration in the sediment. In parallel a value of 67.4 mu M/m super(-2)/h super(-1) was found for the rate of nitrate consumption under in situ conditions. The great similarity between both results would favor the in vitro technique as a valid and more convenient one. Tipo: Text Palavras-chave: MED; Biogeochemistry; Oil pollution; Methodology; Environmental conditions; Experimental research; Comparative studies; Metabolism; Bacteria; Sediment chemistry; Reduction; Nitrates; Denitrification; Nitrogen cycle. Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-979.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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