Search Results - "Pfiffner, S."

An active atmospheric methane sink in high Arctic mineral cryosols by Lau, M C Y, Stackhouse, B T, Layton, A C, Chauhan, A, Vishnivetskaya, T A, Chourey, K, Ronholm, J, Mykytczuk, N C S, Bennett, P C, Lamarche-Gagnon, G, Burton, N, Pollard, W H, Omelon, C R, Medvigy, D M, Hettich, R L, Pfiffner, S M, Whyte, L G, Onstott, T C

“…Methane (CH 4 ) emission by carbon-rich cryosols at the high latitudes in Northern Hemisphere has been studied extensively. In contrast, data on the CH 4…”
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Indigenous and contaminant microbes in ultradeep mines by Onstott, T. C., Moser, D. P., Pfiffner, S. M., Fredrickson, J. K., Brockman, F. J., Phelps, T. J., White, D. C., Peacock, A., Balkwill, D., Hoover, R., Krumholz, L. R., Borscik, M., Kieft, T. L., Wilson, R.

“…Summary Rock, air and service water samples were collected for microbial analyses from 3.2 kilometres depth in a working Au mine in the Witwatersrand basin,…”
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Extended survival of several organisms and amino acids under simulated martian surface conditions by Johnson, A.P., Pratt, L.M., Vishnivetskaya, T., Pfiffner, S., Bryan, R.A., Dadachova, E., Whyte, L., Radtke, K., Chan, E., Tronick, S., Borgonie, G., Mancinelli, R.L., Rothschild, L.J., Rogoff, D.A., Horikawa, D.D., Onstott, T.C.

“…► Extended survival of several organisms under simulated Mars-like conditions. ► Majority of cell loss attributed to desiccation and oxidation related…”
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An active atmospheric methane sink in high Arctic mineral cryosols by Lau, M C Y, Stackhouse, B T, Layton, A C, Chauhan, A, Vishnivetskaya, T A, Chourey, K, Ronholm, J, Mykytczuk, N C S, Bennett, P C, Lamarche-Gagnon, G, Burton, N, Pollard, W H, Omelon, C R, Medvigy, D M, Hettich, R L, Pfiffner, S M, Whyte, L G, Onstott, T C

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Isolation and characterization of a Geobacillus thermoleovorans strain from an ultra-deep South African gold mine by DeFlaun, M.F., Fredrickson, J.K, Dong, H., Pfiffner, S.M., Onstott, T.C., Balkwill, D.L., Streger, S.H., Stackebrandt, E., Knoessen, S., van Heerden, E.

“…A thermophilic facultative bacterial isolate was recovered from 3.2 km depth in a gold mine in South Africa. This isolate, designated GE-7, was cultivated from…”
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The Origin and Age of Biogeochemical Trends in Deep Fracture Water of the Witwatersrand Basin, South Africa by Onstott, T. C., Lin, L.-H., Davidson, M., Mislowack, B., Borcsik, M., Hall, J., Slater, G., Ward, J., Lollar, B. Sherwood, Lippmann-Pipke, J., Boice, E., Pratt, L. M., Pfiffner, S., Moser, D., Gihring, T., Kieft, Thomas L., Phelps, Tommy J., Vanheerden, E., Litthaur, D., Deflaun, M., Rothmel, R., Wanger, G., Southam, G.

“…Water residing within crustal fractures encountered during mining at depths greater than 500 meters in the Witwatersrand basin of South Africa represents a…”
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Temporal Shifts in the Geochemistry and Microbial Community Structure of an Ultradeep Mine Borehole Following Isolation by Moser, D. P., Onstott, T. C., Fredrickson, J. K., Brockman, F. J., Balkwill, D. L., Drake, G. R., Pfiffner, S. M., White, D. C., Takai, K., Pratt, L. M., Fong, J., Lollar, B. Sherwood, Slater, G., Phelps, T. J., Spoelstra, N., Deflaun, M., Southam, G., Welty, A. T., Baker, B. J., Hoek, J.

“…A borehole draining a water-bearing dyke fracture at 3.2-km depth in a South African Au mine was isolated from the open mine environment. Geochemical, stable…”
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In Situ Cultivation of Subsurface Microorganisms in a Deep Mafic Sill: Implications for SLiMEs by Silver, B. J., Onstott, T. C., Rose, G., Lin, L.-H., Ralston, C., Sherwood-Lollar, B., Pfiffner, S. M., Kieft, T. L., McCuddy, S.

“…An in situ culturing device was incubated within a flowing borehole in a mafic sill at 1.474 km depth in Evander Au mine, South Africa. The device was designed…”
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Degeneration of biogenic superparamagnetic magnetite by LI, Y.-L, PFIFFNER, S.M, DYAR, M.D, VALI, H, KONHAUSER, K, COLE, D.R, RONDINONE, A.J, PHELPS, T.J

“…Magnetite crystals precipitated as a consequence of Fe(III) reduction by Shewanella algae BrY after 265 h incubation and 5-year anaerobic storage were…”
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Challenges for coring deep permafrost on Earth and Mars by Pfiffner, S M, Onstott, T C, Ruskeeniemi, T, Talikka, M, Bakermans, C, McGown, D, Chan, E, Johnson, A, Phelps, T J, Le Puil, M, Difurio, S A, Pratt, L M, Stotler, R, Frape, S, Telling, J, Lollar, B Sherwood, Neill, I, Zerbin, B

“…A scientific drilling expedition to the High Lake region of Nunavut, Canada, was recently completed with the goals of collecting samples and delineating…”
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Alkaliphilus transvaalensis gen. nov., sp. nov., an extremely alkaliphilic bacterium isolated from a deep South African gold mine by Takai, K, Moser, DP, Onstott, TC, Spoelstra, N, Pfiffner, SM, Dohnalkova, A, Fredrickson, JK

“…K Takai, DP Moser, TC Onstott, N Spoelstra, SM Pfiffner, A Dohnalkova and JK Fredrickson Pacific Northwest National Laboratory, PO Box 999, Richland, WA 99352,…”
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Comparison between Geochemical and Biological Estimates of Subsurface Microbial Activities by T. J. Phelps, Murphy, E. M., S. M. Pfiffner, White, D. C.

“…Geochemical and biological estimates of in situ microbial activities were compared from the aerobic and microaerophilic sediments of the Atlantic Coastal…”
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THE APPLICATION OF HRTEM TECHNIQUES AND NANOSIMS TO CHEMICALLY AND ISOTOPICALLY CHARACTERIZE GEOBACTER SULFURREDUCENS SURFACES by Fayek, M., Utsunomiya, S., Pfiffner, S. M., White, D. C., Riciputi, L. R., Ewing, R. C., Anovitz, L. M., Stadermann, F. J.

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Microbiological comparisons within and across contiguous lacustrine, paleosol, and fluvial subsurface sediments by Kieft, T.L. (New Mexico Institute of Mining and Technology, Socorro, NM.), Fredrickson, J.K, McKinley, J.P, Bjornstad, B.N, Rawson, S.A, Phelps, T.J, Brockman, F.J, Pfiffner, S.M

“…Twenty-six subsurface samples were collected from a borehole at depths of 173.3 to 196.8 m in the saturated zone at the Hanford Site in south-central…”
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Factors Influencing the Abundance and Metabolic Capacities of Microorganisms in Eastern Coastal Plain Sediments by T. J. Phelps, S. M. Pfiffner, K. A. Sargent, White, D. C.

“…The abundance and metabolic capacities of microorganisms residing in 49 sediment samples from 4 boreholes in Atlantic Coastal Plain sediments were examined…”
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The use of HRTEM techniques and the NanoSIMS to chemically and isotopically characterize Geobacter sulfurreducens surfaces by Fayek, M, Utsunomiya, S, Pfiffner, S. M, White, D. C, Riciputi, L. R, Ewing, R. C, Anovitz, Lawrence M, Stadermann, F. J

“…The ion-imaging capabilities of nanoscale secondary-ion mass spectrometry (NanoSIMS) and advanced high-resolution TEM have been combined in order to…”
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Effects of nutrient dosing on subsurface methanotrophic populations and trichloroethylene degradation by Pfiffner, S.M. (Oak Ridge National Laboratory, Oak Ridge, TN.), Palumbo, A.V, Phelps, T.J, Hazen, T.C

“…In in situ bioremediation demonstration at the Savannah River Site in Aiken, South Carolina, trichloroethylene-degrading microorganisms were stimulated by…”
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Relating ground water and sediment chemistry to microbial characterization at a BTEX-contaminated site by Pfiffner, S.M, Palumbo, A.V, Gibson, T, Ringelberg, D.B, McCarthy, J.F

“…The National Center for Manufacturing Science is investigating bioremediation of petroleum hydrocarbon at a site near Belleville, MI. As part of this study, we…”
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Temporal Shifts in the Geochemistry and Microbial Community Structure of an Ultradeep Mine Borehole Following Isolation by Moser, D P, Onstott, T C, Fredrickson, J K, Brockman, F J, Balkwill, D L, Drake, G R, Pfiffner, S M, White, D C, Takai, K, Pratt, L M, Fong, J, Lollar, B S, Slater, G, Phelps, T J, Spoelstra, N, Deflaun, M, Southam, G, Welty, A T, Baker, B J, Hoek, J

“…A borehole draining a water-bearing dyke fracture at 3.2-km depth in a South African Au mine was isolated from the open mine environment. Geochemical, stable…”
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Microbial characterization of a JP-4 fuel-contaminated site using a combined lipid biomarker/polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE)-based approach by Stephen, John R., Chang, Yun-Juan, Gan, Ying Dong, Peacock, Aaron, Pfiffner, Susan M., Barcelona, Michael J., White, David C., Macnaughton, Sarah J.

“…The impact of pollution on soil microbial communities and subsequent bioremediation can be measured quantitatively in situ using direct, non‐culture‐ dependent…”
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