Respiration of plume tissue of the hydrothermal vent tube worm Riftia pachyptila is insensitive to sulfide poisoning in contrast to tissues of animals that do not inhabit vents. Permeability barriers may not be responsible for this insensitivity since plume homogenates are also resistant to sulfide poisoning. Cytochrome c oxidase of plume, however, is strongly inhibited by sulfide at concentrat...

Nickel catalysts with carbon-mineral supports derived from sapropel were synthesized; the effect exerted by nature of support (type initial sapropel) and active component precursor on activity in model reaction liquid-phase nitrobenzene hydrogenation was studied. The catalysts, synthesized using a smaller fraction carbon, more irrespective nature. highest observed for nickel nitrate formate; co...

In situ grown nickel sulfide and cobalt sulfide hierarchical nanospheres on F-doped SnO2 (FTO) substrates exhibited comparable catalytic activities to sputtering Pt on the counter electrodes for dye-sensitized solar cells (DSSCs). The fresh cells with the nickel sulfide and cobalt sulfide on the counter electrodes could reach power conversion efficiencies of 6.81% and 6.59% respectively, approa...

Sulfide:quinone oxidoreductase (SQR) catalyzes sulfide oxidation during sulfide-dependent chemo- and phototrophic growth in bacteria. The green sulfur bacterium Chlorobaculum tepidum (formerly Chlorobium tepidum) can grow on sulfide as the sole electron donor and sulfur source. C. tepidum contains genes encoding three SQR homologs: CT0117, CT0876, and CT1087. This study examined which, if any, ...

Abstract The Eagle’s Nest Ni-Cu-(platinum group element; PGE) deposit occurs within the 2.73 Ga Esker intrusive complex of Ring Fire suite in McFaulds Lake greenstone belt northern Ontario. Mineralization along margin a formerly ~500-m-high, ~85-m-thick, >1,500-m-long subvertical structurally rotated blade-shaped dike composed harzburgite, lherzolite, and wehrlite. Three sulfide textural...

There are a number of reservoirs in the West Zarafshan Range, which have their own water-saturated, hydrographic, soil and ecological features. In this regard, algoflora is also formed its way. As result research area, 217 species algae were identified, belonging to 5 divisions, 11 classes, 37 orders, 57 families 97 genera. The development distribution organisms water influenced by external fac...

End-products of sulfide detoxification have been compared in three turbellarians and a gastrotrich typical of lenitic beaches with a well-developed sulfide system. Oxidation products were correlated with the oxygen concentration in the animal's habitat indicating that adaptation to life in the sulfide system involves reduction of dependency on molecular oxygen in metabolism. Archiloa wilsoni, a...