soyer j c (8 Ergebnisse)

Tiré à part de Vie Milieu - 1987, 6 pages Bon état - Pour les envois hors de France, la tafication «livre & brochure» pour les frais de port a disparue.Les frais de port annoncés correspondent à une moyenne. Ils seront calculés au plus juste en fonction du poids de votre article.

Spisula substruncata, a mactrid bivalve living in well-oxygenated sublittoral sandy bottoms, contains two types of intracellular bacteria in its gills. Chemoautotrophic metabolism of these bacteria was tested in different ways. Homogenates of gill tissues showed a slight ribulose 1.5 bisphosphate carboxylase activity. Fixation of 14C-labelled bicarbonate in S. subtruncata was higher than in Venus gallina, a clam without bacteria living in the same environment. Other experiments were performed with and without two reduced compounds (sodium thiosulphate and ammonium chloride) at different incubation times (45 to 300 min). With the two compounds, the levels of fixed carbon per g of gill tissue increased significantly after 60 min incubation. A possible ammonia utilization by gill bacteria is demonstrated and may be explained by the fact that the most abundant dissolved reduced compound available for chemoautotrophs is ammonia. The values obtained in this association were lower than those recorded for other bivalves with bacterial cells in their gills. These low values may be explained by the relatively small number of the two types of bacteria observed in the gills of S. subtruncata. 6 pp., 2 figs, gr. 8.

Zustand: leido. Rústica con solapas. marcas de antiguo celo en guardas 469.

Couverture rigide. Zustand: bon. RO30147678: 1956. In-12. Relié. Bon état, Couv. convenable, Dos satisfaisant, Intérieur frais. 352 pages - renfort en coins -. . . . Classification Dewey : 345-Droit pénal.

Couverture rigide. Zustand: bon. RO30147677: 1960. In-12. Relié. Etat d'usage, Tâchée, Dos satisfaisant, Papier jauni. 332 pages. . . . Classification Dewey : 345-Droit pénal.

Couverture souple. Zustand: bon. R320109147: 1964. In-12. Broché. Etat d'usage, Tâchée, Dos satisfaisant, Intérieur frais. 330 pages - Legeres salissures sur le 1er plat. . . . Classification Dewey : 345-Droit pénal.

Couverture souple. Zustand: bon. R320033993: 1960-1961. In-8. Broché. Etat d'usage, Couv. défraîchie, Coiffe en pied abîmée, Papier jauni. 332 + 19 pages. . . . Classification Dewey : 340-Droit.

Ed. Julliard, 1970 - In-8 broché couverture à rabats - 469 pages Bon état, papier naturellement jauni.