Results 171 to 180 of about 4,158 (201)
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Acidophilic sulfur disproportionation
Geochimica et Cosmochimica Acta, 2013Abstract Bacterial disproportionation of elemental sulfur (S 0 ) is a well-studied metabolism and is not previously reported to occur at pH values less than 4.5. In this study, a sediment core from an abandoned-coal-mine-waste deposit in Southwest Indiana revealed sulfur isotope fractionations between S 0 and pyrite (Δ 34 S es-py ) of up to −35 ...
Dalton S. Hardisty +4 more
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Acidophiles in bioreactor mineral processing
Extremophiles, 2000Mineral processing in bioreactors has become established in several countries during the past decade with industrial application of iron- and sulfur-oxidizing bacteria to release occluded gold from mineral sulfides. Cobalt extraction in bioreactors has also been commercialized, and development of high-temperature biooxidation of copper sulfides has ...
P R, Norris, N P, Burton, N A, Foulis
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Biodiversity of acidophilic prokaryotes
2001Publisher Summary This chapter reviews recent literature concerning the biology of acidophilic prokaryotes (bacteria and archaea) specifically relating to acidophilic taxonomy and phylogeny. Acidophilic microorganisms are one group of extremophiles that is becoming increasingly important, both ecologically and economically.
K B, Hallberg, D B, Johnson
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Taxonomy of the Acidophilic Thiobacilli
Journal of General Microbiology, 1966SUMMARY: Numerical analysis was applied to the taxonomy of acidophilic thiobacilli; 22 strains were examined, including authentic cultures and new isolates. Two sets of tests were made with different substrates, sulphur and thiosulphate. The results from both sets of tests indicated two distinct groups corresponding to Thiobacillus thio-oxidans and T ...
M, Hutchinson, K I, Johnstone, D, White
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Immunocytochemistry of Acidophil
Archives of Neurology, 1969IN A REVIEW of the ultrastructual organization of human acidophil and chromophobe pituitary adenomas, the acidophils were from abundantly to sparsely supplied with secretory granules measuring 300 to 500 mμ, and the secretory granules in chromophobe adenomas were of two sizes, the average diameter being about 100 mμ in some cells and approximately 300 ...
E. Tani +5 more
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Canadian Journal of Microbiology, 1974
A brown mold fungus was isolated from acid soil and from acid solutions in an industrial plant and a uranium mine. The only type of spores observed were arthroconidia. The morphology of the fungus is illustrated and it is described as a new species, Scytalidium acidophilum.
L, Sigler, J W, Carmichael
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A brown mold fungus was isolated from acid soil and from acid solutions in an industrial plant and a uranium mine. The only type of spores observed were arthroconidia. The morphology of the fungus is illustrated and it is described as a new species, Scytalidium acidophilum.
L, Sigler, J W, Carmichael
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2014
Acidophily is a trait of organisms referring to the ability to survive and preferentially multiply at low pH (
A. Angelov, W. Liebl
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Acidophily is a trait of organisms referring to the ability to survive and preferentially multiply at low pH (
A. Angelov, W. Liebl
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2000
Acidophilic microorganisms that oxidize mineral sulfides are of obvious biogeochemical significance in their natural habitats and are increasingly being utilized commercially in mineral sulfide processing. However, few studies have focused on their taxonomy and phylogeny, hence there are unresolved questions in these areas.
Brett M. Goebel +2 more
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Acidophilic microorganisms that oxidize mineral sulfides are of obvious biogeochemical significance in their natural habitats and are increasingly being utilized commercially in mineral sulfide processing. However, few studies have focused on their taxonomy and phylogeny, hence there are unresolved questions in these areas.
Brett M. Goebel +2 more
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Fossilization of Acidophilic Microorganisms
Geomicrobiology Journal, 2010This study examines fossil microorganisms found in iron-rich deposits in an extreme acidic environment, the Tinto River in SW Spain. Both electron microscopy (SEM and TEM) and non-destructive in situ microanalytical techniques (EDS, EMP and XPS) were used to determine the role of permineralization and encrustation in preserving microorganisms forming ...
Virginia Souza-Egipsy +4 more
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Plasmid DNA in acidophilic, chemolithotrophic thiobacilli
Canadian Journal of Microbiology, 1981Plasmid patterns were determined in 15 strains of iron-oxidizing Thiobacillus ferrooxidans. In four of these strains plasmid DNA was not detected. In the other strains the molecular weights of plasmids ranged from 5 × 106 to 50 × 106 and each strain had a different plasmid composition.
P A, Martin, P R, Dugan, O H, Tuovinen
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