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	Provedor de dados ArchiMer (2) Autor Dunstan, Wm (1) Kim, Db (1) Le Bozec, Nathalie (1) Wong, Gtf (1) Palavra-chave Hydrogen peroxide (2) Peroxyde d'hydrogène (2) Aciers inoxydables (1) Biofilm (1) Corrosion (1) Eau de mer (1) Films d'oxydes (1) Marine phytoplankton (1) Oxidation-reduction (1) Oxides layer (1) Oxydo-réduction (1) Oxygen reduction (1) Phytoplancton marin (1) Réduction de l'oxygène (1) Seawater (1) Stainless steels (1) Mais... Tipo do documento Text (2) Ano 2003 (1) 2000 (1) País France (2) Idioma Francês (1) Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última The decomposition of hydrogen peroxide by marine phytoplankton ArchiMer Wong, Gtf; Dunstan, Wm; Kim, Db. All nine species of marine phytoplankton tested (a cyanobacterium: Synechococcus sp., three diatoms: Chaetoceros simplex, Thalassiosira oceanica and Skeletonema costatum, two prymnesiophytes: Pleurochrysis carterae and Isochrysis galbana, a prasinophyte: Tetraselmis sp., a green alga: Dunaliella tertiolecta, and a dinoflagellate: Amphidinium carterae) were able to decompose hydrogen peroxide in the dark. Since these phytoplankton species can be found widely in a variety of marine sub-environments, this indicates that the dark decomposition of hydrogen peroxide by phytoplankton is a general phenomenon in the oceans. The decomposition rates were first order with respect to the concentration of hydrogen peroxide and biomass. The second-order rate constants... Tipo: Text Palavras-chave: Phytoplancton marin; Peroxyde d'hydrogène; Oxydo-réduction; Marine phytoplankton; Hydrogen peroxide; Oxidation-reduction. Ano: 2003 URL: http://archimer.ifremer.fr/doc/00322/43276/43007.pdf Réaction de réduction de l'oxygène sur les aciers inoxydables en eau de mer naturelle. Influence du biofilm sur les processus de corrosion ArchiMer Le Bozec, Nathalie. iofilm development on stainless steels immersed in natural seawater can have prejudicial consequences on the resistance of these materials to corrosion . The goal of the present study was to get more precise information on the corrosion processes, and especially on the oxygen reduction reaction. As the reaction is linked to the stainless steel surface state, the characterisation of the oxides films (composition, structure, thickness...) is essential to understand the mechanisms and the oxygen reduction kinetic. The first aim of the study has been to correlate the oxygen reduction processes with the characteristics of the oxides layer as a function of the alloy surface treatment (mechanical polishing, electrochemical passivation and prereduction, chemical... Tipo: Text Palavras-chave: Hydrogen peroxide; Oxides layer; Biofilm; Oxygen reduction; Corrosion; Seawater; Stainless steels; Peroxyde d'hydrogène; Films d'oxydes; Biofilm; Réduction de l'oxygène; Corrosion; Eau de mer; Aciers inoxydables. Ano: 2000 URL: http://archimer.ifremer.fr/doc/2004/these-223.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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