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Mark E Conrad

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Articles 34
Citations 829
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Recent Articles
11.
Hubbard C, Cheng Y, Engelbrekston A, Druhan J, Li L, Ajo-Franklin J, et al.
Front Microbiol . 2014 Oct; 5:480. PMID: 25285094
Microbial sulfate reduction in oil reservoirs (biosouring) is often associated with secondary oil production where seawater containing high sulfate concentrations (~28 mM) is injected into a reservoir to maintain pressure...
12.
Piceno Y, Reid F, Tom L, Conrad M, Bill M, Hubbard C, et al.
Front Microbiol . 2014 Aug; 5:409. PMID: 25147549
A fundamental knowledge of microbial community structure in petroleum reservoirs can improve predictive modeling of these environments. We used hydrocarbon profiles, stable isotopes, and high-density DNA microarray analysis to characterize...
13.
Engelbrektson A, Hubbard C, Tom L, Boussina A, Jin Y, Wong H, et al.
Front Microbiol . 2014 Jul; 5:315. PMID: 25071731
Microbial sulfate reduction is a primary cause of oil reservoir souring. Here we show that amendment with chlorate or perchlorate [collectively (per)chlorate] potentially resolves this issue. Triplicate packed columns inoculated...
14.
Martinez R, Wu C, Beazley M, Andersen G, Conrad M, Hazen T, et al.
PLoS One . 2014 Jun; 9(6):e100383. PMID: 24950228
Background: Radionuclide- and heavy metal-contaminated subsurface sediments remain a legacy of Cold War nuclear weapons research and recent nuclear power plant failures. Within such contaminated sediments, remediation activities are necessary...
15.
Zhuang W, Yi S, Bill M, Brisson V, Feng X, Men Y, et al.
Proc Natl Acad Sci U S A . 2014 Apr; 111(17):6419-24. PMID: 24733917
The acetyl-CoA "Wood-Ljungdahl" pathway couples the folate-mediated one-carbon (C1) metabolism to either CO2 reduction or acetate oxidation via acetyl-CoA. This pathway is distributed in diverse anaerobes and is used for...
16.
Harding K, Lee P, Bill M, Buscheck T, Conrad M, Alvarez-Cohen L
Environ Sci Technol . 2013 Sep; 47(21):12342-50. PMID: 24015929
To quantify in situ bioremediation using compound specific isotope analysis (CSIA), isotope fractionation data obtained from the field is interpreted according to laboratory-derived enrichment factors. Although previous studies that have...
17.
Dubinsky E, Conrad M, Chakraborty R, Bill M, Borglin S, Hollibaugh J, et al.
Environ Sci Technol . 2013 Aug; 47(19):10860-7. PMID: 23937111
The Deepwater Horizon oil spill produced large subsurface plumes of dispersed oil and gas in the Gulf of Mexico that stimulated growth of psychrophilic, hydrocarbon degrading bacteria. We tracked succession...
18.
Druhan J, Steefel C, Molins S, Williams K, Conrad M, DePaolo D
Environ Sci Technol . 2012 Jul; 46(16):8895-902. PMID: 22834766
Stable isotope fractionations of sulfur are reported for three consecutive years of acetate-enabled uranium bioremediation at the US Department of Energy's Rifle Integrated Field Research Challenge (IFRC) site. The data...
19.
Baelum J, Borglin S, Chakraborty R, Fortney J, Lamendella R, Mason O, et al.
Environ Microbiol . 2012 May; 14(9):2405-16. PMID: 22616650
The Deepwater Horizon oil spill resulted in a massive influx of hydrocarbons into the Gulf of Mexico (the Gulf). To better understand the fate of the oil, we enriched and...
20.
Lee P, Warnecke F, Brodie E, Macbeth T, Conrad M, Andersen G, et al.
Environ Sci Technol . 2011 Nov; 46(2):1044-54. PMID: 22091783
A high-density phylogenetic microarray (PhyloChip) was applied to track bacterial and archaeal populations through different phases of remediation at Ft. Lewis, WA, a trichloroethene (TCE)-contaminated groundwater site. Biostimulation with whey,...