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Registros recuperados: 6
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Les granulats marins silicieux et calcaires du littoral Breton - Note technique n°52 ArchiMer
Debyser, J.; Lenoble, J.-p.; Augris, Claude; Cressard, Alain; Lemaire, J..
Les sables et graviers font partie de la branche "granulat" dans laquelle sont regroupés les sables et graviers d'alluvions, les matériaux concassés de carrières (éruptifs et calcaires) ainsi que les sous-produits industriels comme le laitier des hauts-fourneaux. Ces granulats sont destinés à trois types d'emplois : - les bétons pour lesquels on utilise principalement les sables et graviers d'alluvions ; - la confection des routes dans lesquelles il faut distinguer les couches de roulement constituées de matériaux concassés à haute performance, et les couches de bases et de fondations dont le choix dépendra essentiellement du coût du matériau rendu au chantier ; - les autres emplois relativement moins importants où le choix est surtout fonction de...
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Ano: 1976 URL: http://archimer.ifremer.fr/doc/00103/21467/19048.pdf
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Bioaccumulation dans la chaîne alimentaire du littoral nord-Pas de Calais ArchiMer
Oudard, E.; L'Hopitault, J.c.; Delattre, J.m.; Lemaire, J.; Janquin, M.a.; Degros, N.; Richard, A..
La bioaccumulation des métaux et polluants organiques toxiques dans les chaînes biologiques est un des effets les plus pernicieux de la pollution des eaux marines. Responsable d'accidents imprévisibles au vu des teneurs relevées dans les eaux (mercure à Minamata, DDT dans l'Arctique, ... ) elle est extrêmement difficile à modéliser in vitro, tant sont nombreux les paramètres et interactions en jeu (température, pH, salinité, durée; forme chimique du polluant, ions associés; espèce étudiée, organe, stade, ... ).
Tipo: Text
Ano: 1989 URL: http://archimer.ifremer.fr/doc/00033/14385/11677.pdf
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The differentiation of blood proteins during ontogeny in <i>Sepia officinalis</i> L. OMA
Decleir, W.; Lemaire, J.; Richard, A..
1. Blood from embryos, young animals and adult <i>Sepia officinalis</i> L. has been analysed by an ultramicroelectrophoretic technique.2. During the differentiation of a very small embryo into a 2-month-old animal, we have found eleven different protein fractions. 3. All these proteins have been identified as hemocyanin by histochemical tests. 4. The possible origin of the embryonic, young and adult hemocyanins is discussed.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Blood types Ontogeny Proteins Sepia officinalis Linnaeus; 1758 [Common cuttlefish] ANE; France; Nord; Wimereux.
Ano: 1971 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3432
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L'hémocyanine et la glande branchiale de <i>Sepia officinalis</i> L. (Mollusque Céphalopode) OMA
Decleir, W.; Richard, A.; Lemaire, J.; Wolf, G..
The branchial gland from the cuttlefish (cephalopod mollusc) consists of extensively irrigated tissue, which shows a typical ultrastructure of protein-secreting cells: prominent nucleolus, elaborate system of granular endoplasmic reticulum and active Golgi apparatus. The possible hemopoietic role of the gland is sustained by our biochemical results.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sepia officinalis Linnaeus; 1758 [Common cuttlefish].
Ano: 1977 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3568
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Le foie embryonnaire de <i>Sepia officinalis</i> L. (mollusque céphalopode): 1. Organogenèse OMA
Lemaire, J.; Richard, A.; Decleir, W..
The rudiments of the "hepatopancreas" appear early, in stage 20, as a pair of diverticula, given off from the midgut. The anterior part which lies against the yolk-sac will become the "liver". The growth of the liver exhibits a close relationship to the development of the inner yolk-sac. An electron microscopic study has been made of the hepatic epithelium at different embryonic stages. From stage 27, the cytologic aspects of the hepatic cell (presence of "balls", cytoplasm with well developed granular endoplasmic reticulum and free ribosoms...) give evidence of secretory activity. These ultrastructural features show that the liver becomes functional and allow us to think that it plays a part in the embryonic metabolism during the last stages of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Embryonic development Liver Organogenesis Sepia officinalis Linnaeus; 1758 [Common cuttlefish].
Ano: 1977 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3566
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La glande nidamentaire accessoire de <i>Sepia officinalis</i> L.: analyses biochimiques des pigments des bactéries symbiotiques OMA
Van den Branden, C.; Richard, A.; Lemaire, J.; Decleir, W..
An electron microscopic study of the accessory nidamental glands from <i>Sepia officinalis</i> L. shows a secretory cycle in the epithelial cells and the presence of bacteria in the tubules of the gland. A correlation between sexual maturity, the color of the gland and the total number of symbiotic bacteria can be demonstrated. A biochemical study shows that the correlation of the gland is due to several carotenoid pigments. The most important of these is an orange-red xanthophyll that has been called Sepiaxanthine. It is probably formed in the bacteria as a result of the secretory activity of the epithelial glandular cells. This whole mechanism and the role of the bacteria and pigments need further research.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacteria Glands Pigments Symbionts Sepia officinalis Linnaeus; 1758 [Common cuttlefish].
Ano: 1979 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3618
Registros recuperados: 6
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