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| Hess, Philipp; Geiger, Marie; Brochard, Solène; Lepretre, Thomas; Fessard, Valerie; Antignac, Jean-philippe; Dupont, Jacques; Sechet, Veronique; Vanel, Faustine; Mondeguer, Florence; Herve, Fabienne; Leborgne, Sabrina; Deslanglois, Gwenaëlle; Marshall, Lindsey; Rounds, Lucy; Guitton, Yann; Amzil, Zouher; Grovel, Olivier; Ruiz, Nicolas; Pouchus, Francois. |
| Cette étude s’est inscrite dans un contexte d’évaluation de la salubrité des mollusques bivalves destinés à la consommation humaine. Ces organismes peuvent en effet accumuler des toxines, en particulier de microalgues, en concentrations importantes, pouvant induire des intoxications chez les personnes les consommant. Afin d’assurer la protection des consommateurs, les toxines réglementées sont recherchées dans les coquillages par techniques physico-chimiques. En parallèle, les toxines émergentes, potentiellement produites par d’autres organismes que les micro-algues telles que les micromycètes, peuvent être detectées par l’utilisation du test de toxicité aigüe sur souris. Cependant, ce bio-essai présente de très nombreux inconvénients, notamment éthiques... |
| Tipo: Text |
Palavras-chave: Cytotoxicité; Toxicité sur larves de diptères; Activité antibactérienne; Bactéries marines; Toxines lipophiles; Micro-algues; Dinoflagellés; Micromycètes; Penicillium; Acide okadaïque; Azaspiracide; Pinnatoxine G; Vulcanodinium rugosum; Prorocentrum lima; Azadinium spinosum; Beauveria brongniartii. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00253/36470/35015.pdf |
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| Pautot, Guy; Dupont, Jacques. |
| The Marquise fracture zone is an elongated structure, with an irregular topography, which distinguishes areas of different depths. It is 3 500 km long, from its contact point with the oceanic crust of the East-Pacific ridge to its contact point with the northern end of the Touamotou archipelago. Its general direction is West-South-West - East-North-East. It is made up of 5 segments whose morphology and direction differ. These segments' inflection points correspond to those of the North Pacific fractures. |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1974 |
URL: http://archimer.ifremer.fr/doc/1974/publication-5461.pdf |
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| Pautot, Guy; Renard, Vincent; Daniel, Jacques; Dupont, Jacques. |
| The west African continental margin between Abidjan (Ivory Coast) and Walvis Boy (Southwcst Africa) was surveyed in 1971 by the R/V Jean Charcot. Fiftyeight seismic-reflection (flexotir source), bathymetric (3.5 and 12 kc), gravimetric, and magnetic profiles were obtained. The seaward limit of an evaporitic zone outlined during the survey is at the boundary between continental slope and continental rise. Variation of depth of this limit as a function of latitude shows the presence of a large offset at 11°S which seems to be related to an east-east-southeast line of magnetic seamounts cutting into the continental slope. The Annobon-Cameroun volcanic axis separates the salt zones of the Nigerian basin and Congo-Angola basin. The northern limit of Salt... |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1973 |
URL: http://archimer.ifremer.fr/doc/1973/publication-5123.pdf |
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| Garry, Pascal; Dupont, Jacques; Kaelin, Gaelle; Kergaravat, Cedric; Menanteau, Chantal; Vallade, Emilie; Veron, Antoine; Catherine, Martial. |
| En microbiologie des aliments, le document LAB REF 02 du cofrac demande aux laboratoires de participer au moins deux fois par an aux comparaisons interlaboratoires organisés dans leur domaine analytique afin de démontrer leur compétence et garantir ainsi la qualité de leurs résultats. Par ailleurs, le règlement CE n°882/2004 du 29 avril 2004 relatif aux contrôles officiels précise dans son article 33 que les laboratoires nationaux de référence organisent « des essais comparatifs entre les différents laboratoires nationaux officiels et assurent un suivi adéquat de ces essais ». Dans ce cadre le Laboratoire National de Référence (LNR) microbiologie des coquillages a mis en place des essais d’intercomparaison destinés à l’ensemble des laboratoires réalisant... |
| Tipo: Text |
Palavras-chave: Microbiologie; Analyses microbiologiques; Coquillages; Essais interlaboratoires; Escherichia coli. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00143/25473/23627.pdf |
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| Lafite, Robert; Shimwell, Susan; Grochowski, Nicolas; Dupont, Jacques; Nash, Linda; Salomon, Jean-claude; Cabioch, Louis; Collins, Michael; Gao, Shu. |
| Suspended Particulate Matter (SPM) concentrations at various levels within the water column, together with salinity and temperature, were measured using water samples collected from six stations across the Straits of Dover. The sampling programme covered a 16-month period, undertaken during 23 cruises. On the basis of the spatial variability in the concentrations, the water bodies are divided by several boundaries, controlled by tidal and wind conditions. Within the water column, SPM concentrations were higher near the sea bed than in the surface waters. Throughout the cross-section, maximum concentrations occurred adjacent to the coastlines. Temporal variability in the SPM concentration exists on daily and seasonal scales within the coastal waters (4.2 to... |
| Tipo: Text |
Palavras-chave: English Channel; Straits; Transport mechanisms; Flux; Suspended particulate matter; Manche; Détroit; Mécanismes de transport; Flux; Matières en suspension. |
| Ano: 2000 |
URL: https://archimer.ifremer.fr/doc/2000/publication-527.pdf |
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