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TRANSMER, un modèle hydrodynamique rapide et précis pour la simulation à moyen et long terme des transferts de radionucléides en Manche et dans le sud de la Mer du Nord ArchiMer
Bailly Du Bois, Pascal; Dumas, Franck.
TRANSMER hydrodynamic model simulates dispersion of dissolved substances in seawater at the scale of the English Channel and the south of the North Sea with a mesh size of one kilometre and a time step of 30 minutes. It has been qualitatively and quantitatively validated by 1400 measurement of 125Sb in seawater. This model evaluates the medium- and long-term consequences of releases of soluble pollutants in the marine ecosystem under normal or accidental conditions, at a very low computation cost (it takes less than one hour to simulate one year).
Tipo: Text Palavras-chave: English Channel; North Sea; Radionuclide; Concentration; Dispersion; Dissolved substances; Seawater; Hydrodynamic model; Modèle; Sb 125; Dispersion; Mer du Nord; Manche.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/acte-563.pdf
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Use of rotavirus virus-like particles as surrogates to evaluate virus persistence in shellfish ArchiMer
Loisy, Fabienne; Atmar, R; Le Saux, Jean-claude; Cohen, J; Caprais, Marie-paule; Pommepuy, Monique; Le Guyader, Soizick.
Rotavirus virus-like particles (VLPs) and MS2 bacteriophages were bioaccumulated in bivalve mollusks to evaluate viral persistence in shellfish during depuration and relaying under natural conditions. Using this nonpathogenic surrogate virus, we were able to demonstrate that about 1 log(10) of VLPs was depurated after 1 week in warm seawater (22 degrees C). Phage MS2 was depurated more rapidly (about 2 log(10) in 1 week) than were VLPs, as determined using a single-compartment model and linear regression analysis. After being relayed in the estuary under the influence of the tides, VLPs were detected in oysters for up to 82 days following seeding with high levels of VLPs (concentration range between 10(10) and 10(9) particles per g of pancreatic tissue)...
Tipo: Text Palavras-chave: Seawater; Viral diseases; Bioaccumulation; Depuration; Contamination; Model; Pancreas; Regression analysis; Shellfish; Phages; Virus.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-1233.pdf
Registros recuperados: 62
Primeira ... 1234 ... Última
 

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