Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Narine Vardanyan"'
Publikováno v:
Geomicrobiology Journal. 36:188-193
Iron and sulfur oxidizing bacteria produce capsular and colloidal extracellular polymeric substances. The properties and functional role of capsular polysaccharides are well studied. However, colloidal polysaccharides produced by iron oxidizing bacte
Publikováno v:
Solid State Phenomena. 262:113-117
Concentrated tailings samples resulting from the benefication of polymetallic ores (Armenia) were exposed to bioleaching in order to recover non-ferrous and precious metals. Bioleaching of concentrated tailings samples was performed by the natural mi
Publikováno v:
International Journal of Advanced Engineering Research and Science. 4:70-76
Publikováno v:
Advanced Materials Research. 825:388-391
The bioleaching of sulfide minerals by iron oxidizing bacteria are implemented by direct and indirect mechanisms. The direct dissolution of minerals is caused by the attack of sulfide ions by enzymatic system of bacteria. In the indirect mechanism th
Autor:
V. P. Akopyan, Narine Vardanyan
Publikováno v:
Microbiology. 72:438-442
Two strains of Leptospirillum-like bacteria isolated from dumps of Alaverdi and Akhtala sulfide ore deposits in Armenia were studied. The optimum and maximum temperatures for the growth of both strains were 37 and 40°C, respectively. The pH optimum