Peter McMahon

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Reduction/oxidation (redox) conditions in 15 principal aquifer (PA) systems of the United States, and their impact on several water quality issues, were assessed from a large data base collected by the National Water-Quality Assessment Program of the USGS. The logic of these assessments was based on the observed ecological succession of electron acceptors(More)
Ground water systems dominated by iron- or sulfate-reducing conditions may be distinguished by observing concentrations of dissolved iron (Fe(2+)) and sulfide (sum of H(2)S, HS(-), and S(=) species and denoted here as "H(2)S"). This approach is based on the observation that concentrations of Fe(2+) and H(2)S in ground water systems tend to be inversely(More)
—We demonstrate how Field Programmable Gate Arrays (FPGAs) may be used to address the computing challenges associated with assembling genome sequences from recent ultra-high-throughput sequencing technologies. Advances in sequencing technology allow researchers to generate immense amounts of raw data in the form of short reads with high error rates. A(More)
Recent advances in ultra-high-throughput sequencing technology are allowing researchers to generate immense amounts of raw data in the form of short reads from ultra high-throughput platforms. We demonstrate how Field Programmable Gate Arrays (FPGAs) may be used to address computing challenges associated with next-generation genome sequencing. A common(More)
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