Results 221 to 230 of about 510,768 (248)
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Research in Microbiology, 2003
The majority of the Earth's petroleum resource is partly biodegraded. This is of considerable practical significance and can limit economic exploitation of petroleum reserves and lead to problems during petroleum production. Knowledge of the microorganisms present in petroleum reservoirs, their physiological properties and the biochemical potential for
Roling WFM, Head IM, Larter SR
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The majority of the Earth's petroleum resource is partly biodegraded. This is of considerable practical significance and can limit economic exploitation of petroleum reserves and lead to problems during petroleum production. Knowledge of the microorganisms present in petroleum reservoirs, their physiological properties and the biochemical potential for
Roling WFM, Head IM, Larter SR
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Microbiological Indicators of Subsurface Hydrocarbon Accumulations
AAPG Bulletin, 1991The measurement of toxin tolerance in the microbial communities present in stream sediments has been demonstrated to be an effective exploration tool. The technique relies on the fact that metals of, or associated with, ore deposits often represent toxins to microbial communities.
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Effect of Chemical Oxidation on Subsurface Microbiology and Trichloroethene (TCE) Biodegradation
Bioremediation Journal, 2000Abstract Research was conducted to determine the effect of chemical oxidation on subsurface microbiology and cometabolic biodegradation capacity in a trichloroethene (TCE)/perchloroethene (PCE)-contaminated aquifer previously treated with Fenton's reagent. Groundwater pH declined from 5 to 2.4 immediately after the treatment, and subsequently rose to a
James R. Kastner +4 more
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Methods for recovery of deep terrestrial subsurface sediments for microbiological studies
Journal of Microbiological Methods, 1989Methods for the aseptic recovery of sediments from the terrestrial deep subsurface for microbiological analyses are defined. Sediments were recovered from depths > 300 m by rotary drilling techniques using bentonite drilling techniques. Four sampling tools were successfully used and compared for their ability to retrieve different types of subsurface ...
T.J. Phelps +4 more
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Canadian Journal of Microbiology, 1974
Concentrations of bacteria, fungi, ammonium, nitrate, nitrite, orthophosphate, sulfate, and certain metals were enriched in freshwater-surface microlayer samples relative to the bulk-subsurface water. Results differed markedly depending on which of three methods for surface-microlayer collection was used. This report suggests that the biologically and
R F, Hatcher, B C, Parker
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Concentrations of bacteria, fungi, ammonium, nitrate, nitrite, orthophosphate, sulfate, and certain metals were enriched in freshwater-surface microlayer samples relative to the bulk-subsurface water. Results differed markedly depending on which of three methods for surface-microlayer collection was used. This report suggests that the biologically and
R F, Hatcher, B C, Parker
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Subsurface Microbiology and the Evolution of the Biosphere
2018This chapter explores potential intersections between studies of subsurface microbiology and various studies of planetary-scale ecology. It outlines some important functional links between subsurface microorganisms and larger ecological processes.
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Characterization of the microbiology within a 21 m3section of rock from the deep subsurface
Microbial Ecology, 1993The distribution of aerobic chemoheterotrophic microorganisms within a 21 m3 section of deep subsurface rock was determined. Nineteen samples for microbiological analysis were aseptically taken by hand from the walls of a 400 m deep subsurface tunnel after an alpine miner created fresh rock faces 0.76, 1.52, 2.28, and 3.04 m into the tunnel wall.
D L, Haldeman +3 more
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2013
This chapter gives the reader an introduction into the microbiology of deep geological systems with a special focus on potential geobiotechnological applications and respective risk assessments. It has been known for decades that microbial activity is responsible for the degradation or conversion of hydrocarbons in oil, gas, and coal reservoirs.
Claudia, Gniese +6 more
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This chapter gives the reader an introduction into the microbiology of deep geological systems with a special focus on potential geobiotechnological applications and respective risk assessments. It has been known for decades that microbial activity is responsible for the degradation or conversion of hydrocarbons in oil, gas, and coal reservoirs.
Claudia, Gniese +6 more
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Microbiological Transformations of Low-Molecular-Weight Carbon Compounds in the Deep Subsurface
1993Methanogenesis, sulfate reduction, and acetogenesis were studied in the deep subsurface waters of two exploited oil fields. Higher rates of methanogenesis (mean value of 2.16 µg CH4 L-1 d-1) were found in the faintly mineralized waters of the Mychpayskoe oil field, which contained low sulfate concentrations. In the waters of the Bondyuzhskoe oil field (
Sergei S. Belyaev, Igor A. Borzenkov
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2016
A number of countries are actively working toward the siting and development of deep geological repositories (DGR) for used nuclear fuel. Given their ubiquity and metabolic capabilities, it is assumed that with sufficient time and appropriate conditions, microorganisms could alter the geochemistry of the repository. As such, the DGR concept provides an
J. R. McKelvie +2 more
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A number of countries are actively working toward the siting and development of deep geological repositories (DGR) for used nuclear fuel. Given their ubiquity and metabolic capabilities, it is assumed that with sufficient time and appropriate conditions, microorganisms could alter the geochemistry of the repository. As such, the DGR concept provides an
J. R. McKelvie +2 more
openaire +1 more source