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Methanogenic Conversion of CO2 Into CH4

Description: This SBIR project evaluated the potential to remediate geologic CO2 sequestration sites into useful methane gas fields by application of methanogenic bacteria. Such methanogens are present in a wide variety of natural environments, converting CO2 into CH4 under natural conditions. We conclude that the process is generally feasible to apply within many of the proposed CO2 storage reservoir settings. However, extensive further basic R&D still is needed to define the precise species, environme… more
Date: May 6, 2012
Creator: Stevens, S.H., Ferry, J.G., Schoell, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Absolute Determination of Charge-Coupled Device Quantum Detection Efficiency Using Si K-Edge X-Ray Absorption Fine Structure

Description: We report a method to determine the quantum detection efficiency and the absorbing layers on a front-illuminated charge-coupled device (CCD). The CCD under study, as part of a crystal spectrometer, measures intense continuum x-ray emission from a picosecond laser-produced plasma and spectrally resolves the Si K-edge x-ray absorption fine structure features due to the electrode gate structure of the device. The CCD response across the Si K-edge shows a large discontinuity as well as a number of … more
Date: May 6, 2012
Creator: Dunn, J. & Steel, A. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Surface Studies of Ultra Strength Drilling Steel after Corrosion Fatigue in Simulated Sour Environment

Description: The Unites States predicted 60% growth in energy demand by 2030 makes oil and natural gas primary target fuels for energy generation. The fact that the peak of oil production from shallow wells (< 5000 m) is about to be reached, thereby pushing the oil and natural gas industry into deeper wells. However, drilling to depths greater than 5000 m requires increasing the strength-to weight ratio of the drill pipe materials. Grade UD-165 is one of the ultra- high yield strength carbon steels devel… more
Date: May 6, 2012
Creator: Ziomek-Moroz, M.; Hawk, J. A.; Ramgopal, Thodla & Gui, F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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