Search
Now showing items 1-10 of 47
THE ISOLATION AND CHARACTERIZATION OF NOVEL EXTREME HALOPHILIC ARCHAEA FROM A LOW-SALT, SULFIDE- AND SULFUR-RICH SPRING.
(2009)
The archaeal community of a low-salt, sulfur-rich spring in south-western Oklahoma, was analyzed at two different locations along the spring. Interestingly, 36% of the archaeal mat clone library and 4% of the source clone ...
Exploring ecological and biogeographic questions using biological databases derived from natural history collections and surveys
(2009)
Biogeographic research has benefited from the digitizing of large databases derived from natural history collections and biological surveys. These resources made available via the Internet can be accessed by biogeographers ...
Factors involved in cellular sensitivity to anthrax lethal toxin.
(2005)
The lethal factor (LF) component of Bacillus anthracis lethal toxin (LeTx) cleaves mitogen activated protein kinase kinases (MAPKKs) in a variety of different cell-types, yet not all cells are susceptible to the toxin. ...
Responses of soil respiration and ecosystem productivity to climate change in southern Great Plains.
(2007)
The third is to investigate the role of precipitation on ecosystem carbon processes (i.e., biomass, litterfall, and soil respiration) along a natural precipitation gradient in southern Great Plains. Our results show that ...
Microbial biosurfactant production: The effect of the Bacillus strain JF-2 biosurfactant on anaerobic hydrocarbon degradation, and the presence of indigenous biosurfactant-producing bacteria in soils.
(2005)
A series of experiments was designed utilizing the biosurfactant produced by Bacillus JF2. Specifically, these experiments were designed to determine if the presence of various levels of pre-purified JF2 biosurfactant would ...
Isolation and characterization of small naturally occurring plasmids from Desulfovibrio spp.
(2007)
These results suggest that these strains have different genomic organization. The presence of plasmid DNA was only detected in Desulfovibrio SR-1. On the basis of distinct phenotypic and genotypic characteristics, strain ...
The role of vegetation in the phytoremediation and ecological recovery of hazardous waste sites.
(2000)
The growth of plant roots in contaminated soils is of paramount importance to the success of phytoremediation. Field observations, coupled with chemical analysis, indicated that the presence of plant roots growing in the ...
Experimental and modeling studies of canopy radiation and water use efficiencies, soil respiration and net ecosystem carbon exchange.
(2002)
Canopy radiation and water use efficiencies (RUE and WUE), soil respiration and interannual availability in net ecosystem carbon exchange (NEE) are important issues in global climate change study. This thesis summarized ...
Microbially-mediated reduction and oxidation of uranium: Implications for the bioremediation of uranium(VI)-contaminated aquifers.
(2004)
Mechanisms of nitrate-dependent U(IV) were assessed by incubating biogenic U(IV) with nitrite or Fe(III). Fe(III) rapidly but incompletely oxidized U(IV) since Fe(II) accumulated during the reaction and inhibited any further ...
Assessing the influence of electron donor and cell-cell interactions on in situ microbial sulfate and hydrogen consumption using field and laboratory approaches.
(2004)
*This dissertation is a compound document (contains both a paper copy and a CD as part of the dissertation).