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Arctic Energy Technology Development Laboratory (Part 2)
Methane (CH{sub 4}) in natural gas is a major energy source in the U.S., and is used extensively on Alaska's North Slope, including the oilfields in Prudhoe Bay, the community of Barrow, and the National Petroleum Reserve, Alaska (NPRA). Smaller villages, however, are dependent on imported diesel fuel for both power and heating, resulting in some of the highest energy costs in the U.S. and crippling local economies. Numerous CH{sub 4} gas seeps have been observed on wetlands near Atqasuk, Alaska (in the NPRA), and initial measurements have indicated flow rates of 3,000-5,000 ft{sup 3} day{sup -1} (60-100 kg CH{sub 4} day{sup -1}). Gas samples collected in 1996 indicated biogenic origin, although more recent sampling indicated a mixture of biogenic and thermogenic gas. In this study, we (1) quantified the amount of CH{sub 4} generated by several seeps and evaluated their potential use as an unconventional gas source for the village of Atqasuk; (2) collected gas and analyzed its composition from multiple seeps several miles apart to see if the source is the same, or if gas is being generated locally from isolated biogenic sources; and (3) assessed the potential magnitude of natural CH{sub 4} gas seeps for future use …
Date:
December 31, 2008
Creator:
960443, See OSTI ID Number
System:
The UNT Digital Library
Arctic Energy Technology Development Laboratory (Part 3)
Various laboratory tests were carried at the R & D facility of BJ Services in Tomball, TX with BJ Services staff to predict and evaluate the performance of the Ceramicrete slurry for its effective use in permafrost cementing operations. Although other standards such as those of the American Standard for Testing Materials (ASTM) and Construction Specification Institute (CSI) exist, all these tests were standardized by the API. A summary of the tests traditionally used in the cement slurry design as well as the API tests reference document are provided in Table 7. All of these tests were performed within the scope of this research to evaluate properties of the Ceramicrete.
Date:
December 31, 2008
Creator:
960443, See OSTI ID Number
System:
The UNT Digital Library
Greenidge Multi-Pollutant Control Project (Part 2)
The digital full text of this report is divided into two parts. This part of the report contains five and a half of the twelve appendices of the report.
Date:
October 18, 2008
Creator:
960446, See OSTI ID
System:
The UNT Digital Library
Greenidge Multi-Pollutant Control Project (Part 3)
None
Date:
October 18, 2008
Creator:
960446, See OSTI ID Number
System:
The UNT Digital Library
IBS and Expected Luminosity Performance For RHIC Beams At Top Energy With 56 MHz SRF Cavity
N/A
Date:
October 1, 2008
Creator:
A., Fedotov
System:
The UNT Digital Library
RHIC Performance with 56 MHz RF and Gold Ion Beams Pre-cooled at Lower Energy
N/A
Date:
October 1, 2008
Creator:
A., Fedotov
System:
The UNT Digital Library
Emittance Reduction between EBIS LINAC and Booster by Electron Beam Cooling - Is Single Pass Cooling Possible?
N/A
Date:
April 1, 2008
Creator:
A., Hershcovitch
System:
The UNT Digital Library
Part II/Addendum Electron Beam Cooling between EBIS LINAC and Booster; Is Single Pass Cooling Possible?
N/A
Date:
July 1, 2008
Creator:
A., Hershcovitch
System:
The UNT Digital Library
Spherical Aberration Corrections for an Electrostatic Gridded Lens
N/A
Date:
May 1, 2008
Creator:
A., Pikin
System:
The UNT Digital Library
Generalization of the ERIT Principle and Method
N/A
Date:
February 1, 2008
Creator:
A., Ruggiero
System:
The UNT Digital Library
Tracking of Acceleration with HNJ Method
N/A
Date:
February 1, 2008
Creator:
A., Ruggiero
System:
The UNT Digital Library
Prediction of atmospheric δ13CO2 using fossil plant tissues. Reviews of Geophysics, 46/2006RG0002.(view/download pdf)
To summarize the content: we presented the results of laboratory experiments designed to quantify the relationship between plant tissue δ13C and δ13CO2 values under varying environmental conditions, including differential pCO2 ranging from 1 to 3 times today’s levels. As predicted, plants grown under elevated pCO2 showed increased average biomass compared to controls grown at the same temperature. Across a very large range in δ13Ca (≈ 24 ‰) and pCO2 (≈ 740 ppmv) we observed a consistent correlation between δ13Ca and δ13Cp (p<0.001). We show an average isotopic depletion of −25.4 ‰ for above-ground tissue and −23.2 ‰ for below-ground tissue of Raphanus sativus L. relative to the composition of the atmosphere under which it formed. For both above- and below-ground tissue, grown at both ~23 ˚C and ~29 ˚C, correlation was strong and significant (r2 ≥ 0.98, p<0.001); variation in pCO2 level had little or no effect on this relationship.
Date:
June 30, 2008
Creator:
A.H. Jahren, N.C. Arens and S.A. Harbeson
System:
The UNT Digital Library
Simulation of Alpha-Channeling in Mirror Machines
Applying α-channeling techniques to mirror machines can significantly increase their effective reactivity, thus making open configurations more advantageous for practical fusion. A large fraction of α particle energy can be extracted using rf waves. Effects employed to cool α particles can also in principle be used to heat the fusion ions; the possibility to design a configuration of rf waves which could be used to perform both tasks is demonstrated.
Date:
March 17, 2008
Creator:
A.I. Zhmoginov, N.J. Fisch
System:
The UNT Digital Library
Archaeological Survey of the Proposed Weatherford 12-Inch Sewer Pipeline Route, Parker County, Texas
Results of field and archaeological investigations along with recommendations concerning proposed sewer pipeline.
Date:
2008
Creator:
AR Consultants
System:
The Portal to Texas History
Anode Sheath Switching in a Carbon Nanotube Arc Plasma
The anode ablation rate is investigated as a function of anode diameter for a carbon nanotube arc plasma. It is found that anomalously high ablation occurs for small anode diameters. This result is explained by the formation of a positive anode sheath. The increased ablation rate due to this positive anode sheath could imply greater production rate for carbon nanotubes.
Date:
April 8, 2008
Creator:
Abe Fetterman, Yevgeny Raitses, and Michael Keidar
System:
The UNT Digital Library
Electric Transmission: Approaches for Energizing a Sagging Industry
This report discusses factors that have contributed to the lack of new transmission capacity and some of the resulting issues.
Date:
January 30, 2008
Creator:
Abel, Amy
System:
The UNT Digital Library
Smart Grid Provisions in H.R. 6, 110th Congress
This report provides an overview of Smart Grid, a distribution system that allows for flow of information from a customer's meter in two directions. It discusses both regulatory and technological barriers that have limited the implementation of Smart Grid technology.
Date:
February 13, 2008
Creator:
Abel, Amy
System:
The UNT Digital Library
Transmission System Performance Analysis for High-Penetration Photovoltaics
This study is an assessment of the potential impact of high levels of penetration of photovoltaic (PV) generation on transmission systems. The effort used stability simulations of a transmission system with different levels of PV generation and load.
Date:
February 1, 2008
Creator:
Achilles, S.; Schramm, S. & Bebic, J.
System:
The UNT Digital Library
Synthesis and Characterization of Cluster-Derived Supported Bimetallic Catalysts
New procedures have been developed for synthesizing di- and tri-metallic cluster complexes. The chemical properties of the new complexes have been investigated, particularly toward the activation of molecular hydrogen. These complexes were then converted into bi- and tri-metallic nanoparticles on silica and alumina supports. These nanoparticles were characterized by electron microscopy and were then tested for their ability to produce catalytic hydrogenation of unsaturated hydrocarbons and for the preferential oxidation of CO in the presence of hydrogen. The bi- and tri-metallic nanoparticles exhibited far superior activity and selectivity as hydrogenation catalysts when compared to the individual metallic components. It was found that the addition of tin greatly improved the selectivity of the catalysts for the hydrogenation of polyolefins. The addition of iron improves the catalysts for the selective oxidation of CO by platinum in the presence of hydrogen. The observations should lead to the development of lower cost routes to molecules that can be used to produce polymers and plastics for use by the general public and for procedures to purify hydrogen for use as an alternative energy in the hydrogen economy of the future.
Date:
October 10, 2008
Creator:
Adams, Richard D & Amiridis, Michael D
System:
The UNT Digital Library
Confirmatory Survey for the Partial Site Release at the ABB Inc. CE Winsor Site, Windsor, CT
The objectives of the confirmatory surveys were to confirm that remedial actions had been effective in meeting established release criteria and that documentation accurately and adequately describes the final radiological conditions of the PSR Impacted Areas.
Date:
June 27, 2008
Creator:
Adams, W.C.
System:
The UNT Digital Library
DWPF GLASS BEADS AND GLASS FRIT TRANSPORT DEMONSTRATION
DWPF is considering replacing irregularly shaped glass frit with spherical glass beads in the Slurry Mix Evaporator (SME) process to decrease the yield stress of the melter feed (a non-Newtonian Bingham Plastic). Pilot-scale testing was conducted on spherical glass beads and glass frit to determine how well the glass beads would transfer when compared to the glass frit. Process Engineering Development designed and constructed the test apparatus to aid in the understanding and impacts that spherical glass beads may have on the existing DWPF Frit Transfer System. Testing was conducted to determine if the lines would plug with the glass beads and the glass frit slurry and what is required to unplug the lines. The flow loop consisted of vertical and horizontal runs of clear PVC piping, similar in geometry to the existing system. Two different batches of glass slurry were tested: a batch of 50 wt% spherical glass beads and a batch of 50 wt% glass frit in process water. No chemicals such as formic acid was used in slurry, only water and glass formers. The glass beads used for this testing were commercially available borosilicate glass of mesh size -100+200. The glass frit was Frit 418 obtained from …
Date:
November 24, 2008
Creator:
Adamson, D & Bradley Pickenheim, B
System:
The UNT Digital Library
Lebanon: Background and U.S. Relations. December 2008
This report provides an overview of Lebanese politics, recent events in Lebanon, and current issues in U.S. - Lebanon relations.
Date:
December 16, 2008
Creator:
Addis, Casey L.
System:
The UNT Digital Library
Biochemical Production of Ethanol from Corn Stover: 2007 State of Technology Model
An update to the FY 2005 assessment of the state of technical research progress toward biochemical process goals. This assessment contains research results from 2006 and 2007.
Date:
May 1, 2008
Creator:
Aden, A.
System:
The UNT Digital Library
Outlook and Challenges for Chinese Coal
China has been, is, and will continue to be a coal-powered economy. The rapid growth of coal demand since 2001 has created deepening strains and bottlenecks that raise questions about supply security. Although China's coal is 'plentiful,' published academic and policy analyses indicate that peak production will likely occur between 2016 and 2029. Given the current economic growth trajectory, domestic production constraints will lead to a coal gap that is not likely to be filled with imports. Urbanization, heavy industry growth, and increasing per-capita consumption are the primary drivers of rising coal usage. In 2006, the power sector, iron and steel, and cement accounted for 71% of coal consumption. Power generation is becoming more efficient, but even extensive roll-out of the highest efficiency units could save only 14% of projected 2025 coal demand. If China follows Japan, steel production would peak by 2015; cement is likely to follow a similar trajectory. A fourth wedge of future coal consumption is likely to come from the burgeoning coal-liquefaction and chemicals industries. New demand from coal-to-liquids and coal-to-chemicals may add 450 million tonnes of coal demand by 2025. Efficient growth among these drivers indicates that China's annual coal demand will reach 4.2 to …
Date:
June 20, 2008
Creator:
Aden, Nathaniel T.; Fridley, David G. & Zheng, Nina
System:
The UNT Digital Library