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Enthalpy measurement of coal-derived liquids. Combined quarterly technical progress reports, April-June 1979 and July-September 1979. [Effect of association]

Description: Enthalpy measurements on a coal-derived naphtha and middle distillate, both produced by the SRC-II process, were made using flow calorimetry. The accuracy of the measurements, as reported by Omid, was within +- 1% of the measured enthalpy differences, ..delta..H. Experimental data for the naphtha were obtained over a pressure range of 100-300 psia and temperatures from 148/sup 0/ to 456/sup 0/F. The middle distillate enthalpy measurements were made in the pressure and temperature ranges of 130 … more
Date: 1979~
Creator: Kidnay, A. J. & Yesavage, V. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geographic market suitability analysis for low- and intermediate-temperature solar IPH systems

Description: Previous studies of the industrial market for solar energy systems have considered the level of solar radiation as the main determinant of geographic markets in the US. This study evaluates geographical markets extensively based on such criteria as output of different types of low- and intermediate-temperature solar thermal collectors, air quality constraints for competitive fuels, state solar tax incentives, fuel costs, low industrial use of coal, high industrial growth areas, and industry ene… more
Date: December 1981
Creator: Turner, A.K.; Weber, J.C. & DeAngelis, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geothermal Loan Guaranty Program and its impact on geothermal exploration and development

Description: The study showed that the Geothermal Loan Guaranty Program has had only a negligible effect on geothermal development and the response to the program was far less than expected. The streamlining of environmental regulations and leasing policies, and the granting of intangible drilling cost write-offs and depletion allowances to operators would have had a greater impact on geothermal energy development. The loan guaranty program did not promote the undertaking of any new projects that would not … more
Date: May 1978
Creator: Nasr, L.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geothermal energy: Geology, exploration, and developments. Part I

Description: Geology, exploration, and initial developments of significant geothermal areas of the world are summarized in this report which is divided into two parts. Part 1 is a review of the geological and explorational aspects of geothermal energy development; areas of potential development in the Western United States are also discussed. The most favorable geological environment for exploration and development of geothermal steam is characterized by recent normal faulting, volcanism, and high heat flow… more
Date: November 1971
Creator: Grose, L. T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Improved instrument for the measurement of the thermal conductivity of non-electrolyte liquids. Progress report No. 1, May 1, 1979-January 15, 1980

Description: An improved instrument for the measurement of the thermal conductivity of non-electrolyte liquids was designed and constructed. Eventually the apparatus will be tested and the thermal conductivity of two coal-derived synthetic oils will be measured. (FS)
Date: 1980~
Creator: Sloan, E.D. & Graboski, M.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An evaluation of some innovative fragmentation systems for oil shale

Description: This report describes a large-scale underground mining method, large-hole stoping, using some innovative fragmentation systems (buffer blasting, continuous loading/hauling, and mechanical miners for development). This study includes a literature review and an experimental study of one of the key design factors--buffer blasting. The purpose of the buffer-blasting experiments is to examine the swell that is necessary to achieve satisfactory fragmentation results. The study also includes a technic… more
Date: June 1991
Creator: Hieta, M. & Hustrulid, W.A. (Western Research Inst., Laramie, WY (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Produced Water Management and Beneficial Use

Description: Large quantities of water are associated with the production of coalbed methane (CBM) in the Powder River Basin (PRB) of Wyoming. The chemistry of co-produced water often makes it unsuitable for subsequent uses such as irrigated agriculture. However, co-produced waters have substantial potential for a variety of beneficial uses. Achieving this potential requires the development of appropriate water management strategies. There are several unique characteristics of co-produced water that make de… more
Date: October 31, 2007
Creator: Brown, Terry; Frost, Carol; Hayes, Thomas; Heath, Leo; Johnson, Drew; Lopez, David et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Measurment and Interpretation of Seismic Attenuation for Hydrocarbon Exploration

Description: This research project is the combined effort of several leading research groups. Advanced theoretical work is being conducted at the Lawrence Berkeley National Laboratory. Here, the fundamental controls on loss mechanisms are being examined, primarily by use of numerical models of heterogeneous porous media. At the University of California, Berkeley, forward modeling is combined with direct measurement of attenuation. This forward modeling provides an estimate of the influence of 1/Q on the obs… more
Date: December 31, 2007
Creator: Batzle, Michael; Duranti, Luca; Rector, James & Pride, Steve
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cracking behavior of cored structures

Description: The effects of compositional gradients, are considered based on a thermodynamic analysis, referred to as the Cahn-Hillard analysis, which describes the degree to which a local surface energy is modified by the presence of a composition gradient. The analysis predicts that both ductile and brittle fracture mechanisms are enhanced by the presence of a composition gradient. Data on stress corrosion cracking and fatigue crack growth in selected FCC alloys are used to illustrate the significance of … more
Date: September 1991
Creator: Wahid, A.; Olson, D.L.; Matlock, D.K. (Colorado School of Mines, Golden, CO (United States). Center for Welding and Joining Research) & Kelly, T.J. (General Electric Aircraft Engines, Evendale, OH (United States))
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

Development of high performance refractory fibers with enhanced insulating properties and longer service lifetimes

Description: We have initiated a three phase investigation of the development of high performance refractory fibers with enhanced insulating properties and longer usable lifetimes. This report presents the results of the first phase of the study, performed from Aug. 1989 through Feb. 1991, which shows that significant energy saving are possible through the use of high temperature insulating fibers that better retain their efficient insulating properties during the service lifetime of the fibers. The remaini… more
Date: February 1991
Creator: Martin, P.C.; DePoorter, G.L. & Munoz, D.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Workshop on quantitative dynamic stratigraphy

Description: This document discusses the development of quantitative simulation models for the investigation of geologic systems. The selection of variables, model verification, evaluation, and future directions in quantitative dynamic stratigraphy (QDS) models are detailed. Interdisciplinary applications, integration, implementation, and transfer of QDS are also discussed. (FI)
Date: April 1988
Creator: Cross, T.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Ferrous alloy metallurgy - liquid lithium corrosion and welding. Progress report, January 1-December 31, 1980

Description: Fatigue crack growth has been used to evaluate the interaction between liquid lithium and an imposed stress. Fatigue crack growth data on type 304L stainless steel at 700C and 2 1/4Cr-1Mo steel between 500 and 700C show that for all imposed test conditions (i.e. frequency, temperature, and nitrogen content in the lithium) the interaction of lithium with the strain at the crack tip results in enhanced crack growth rates. The enhanced growth rates result from the effects of either enhanced grain … more
Date: 1980~
Creator: Olson, D. L. & Matlock, D. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Susceptibility of 2 1/4 Cr-1Mo steel to liquid metal induced embrittlement by lithium-lead solutions

Description: An investigation has been conducted on the liquid metal induced embrittlement susceptibility of 2 1/4Cr-1Mo steel exposed to lithium and 1a/o lead-lithium at temperatures between 190/sup 0/C and 525/sup 0/C. This research was part of an ongoing effort to evaluate the compatibility of liquid lithium solutions with potential fusion reactor containment materials. Of particular interest was the microstructure present in a weld heat-affected zone, a microstructure known to be highly susceptible to c… more
Date: August 1984
Creator: Eberhard, B.A. & Edwards, G.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Liquid lithium corrosion research. Progress report, April 1, 1975-- December 31, 1975

Description: Kinetics for grain boundary penetration and weight loss were determined for 304L stainless steel in Ti-gettered liquid Li. Empirical weight loss rate coefficient expressions were determined as function of both N content and temperature which predict the weight loss behavior of stainless steel for Li with high N content. Capillarity was eliminated as a possible driving force for grain boundary penetration of Fe by Li with the evidence of a grain boundary groove. Coupled ionic diffusion in a corr… more
Date: 1975~
Creator: Olson, D. L. & Bradley, W. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Workshop on quantitative dynamic stratigraphy. Final conference report

Description: This document discusses the development of quantitative simulation models for the investigation of geologic systems. The selection of variables, model verification, evaluation, and future directions in quantitative dynamic stratigraphy (QDS) models are detailed. Interdisciplinary applications, integration, implementation, and transfer of QDS are also discussed. (FI)
Date: April 1988
Creator: Cross, T. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cracking behavior of cored structures

Description: The effects of compositional gradients, are considered based on a thermodynamic analysis, referred to as the Cahn-Hillard analysis, which describes the degree to which a local surface energy is modified by the presence of a composition gradient. The analysis predicts that both ductile and brittle fracture mechanisms are enhanced by the presence of a composition gradient. Data on stress corrosion cracking and fatigue crack growth in selected FCC alloys are used to illustrate the significance of … more
Date: September 1991
Creator: Wahid, A.; Olson, D. L.; Matlock, D. K. & Kelly, T. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Interdisciplinary study of reservoir compartments. Quarterly technical progress report, July 1, 1994--September 30, 1994

Description: This DOE research project was established to document the integrated team approach for solving reservoir engineering problems. A field study integrating the disciplines of geology, geophysics, and petroleum engineering will be the mechanism for documenting the integrated approach. This is an area of keen interest to the oil and gas industry. The goal will be to provide tools and approaches that can be used to detect reservoir compartments, reach a better reserve estimate, and improve profits ea… more
Date: October 28, 1994
Creator: Van Kirk, Craig W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An evaluation of some innovative fragmentation systems for oil shale

Description: This report describes a large-scale underground mining method, large-hole stoping, using some innovative fragmentation systems (buffer blasting, continuous loading/hauling, and mechanical miners for development). This study includes a literature review and an experimental study of one of the key design factors--buffer blasting. The purpose of the buffer-blasting experiments is to examine the swell that is necessary to achieve satisfactory fragmentation results. The study also includes a technic… more
Date: June 1991
Creator: Hieta, M. & Hustrulid, W. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Small-angle x-ray scattering studies of microvoids in amorphous-silicon-based semiconductors. Final subcontract report, 1 February 1991--31 January 1994

Description: This report describes work performed to provide new details of the microstructure for the size scale from about 1 nm to 30 nm in high-quality hydrogenated amorphous-silicon and related alloys prepared by current state-of-the-art deposition methods as well as by new and emerging deposition technologies. The purpose of this work is to help determine the role of microvoids and other density fluctuations in controlling the opto-electronic and photovoltaic properties. The approach involved collabora… more
Date: July 1994
Creator: Williamson, D. L.; Jone, S. J. & Chen, Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Polycrystalline thin film cadmium telluride solar cells fabricated by electrodeposition. Annual subcontract report, 20 March 1993--19 March 1994

Description: This report describes the principal results of work performed during the second year of a 3-year program at the Colorado School of Mines (CSM). The work on transparent conducting oxides was carried out primarily by CSM students at NREL and is described in three publications listed in Appendix C. The high-quality ZnO produced from the work was incorporated into a copper indium diselenide cell that exhibited a world-record efficiency of 16.4%. Much of the time was devoted to the improvement of ca… more
Date: July 1994
Creator: Trefny, J. U.; Furtak, T. E.; Williamson, D. L. & Kim, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Computational methods for improving the resolution of subsurface seismic images. Progress report, September 15, 1991--September 14, 1993

Description: Our interactive modeling for Gaussian beam modeling in two-dimensional, triangulated complex geologic structure, has been generalized to include transmission losses at interfaces, and density and Q-characterization of attenuation in layers. Also, multiple reflections and the option to model data from VSP acquisition geometry have been included. Shortcomings when the structure contains first-order discontinuities, however, limit the full geologic complexity that presently can be modeled by the G… more
Date: May 1993
Creator: Larner, K.; Hale, D.; Bleistein, N. & Cohen, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Liquid lithium corrosion research. Progress report, April 1, 1976--December 31, 1976. [Summaries of research activities at Colorado School of Mines]

Description: Stress enhanced lithium grain boundary penetration of iron was investigated under both tensile and compressive loads. Plastic deformation was found to control the penetration behavior regardless of the stress state that causes the plastic deformation. The penetration rate of stressed specimens is much larger than unstressed iron specimens. The creep rate was found to be rate controlling the penetration kinetics. Mossbauer technique and analysis is in progress to determine the nature of the corr… more
Date: 1976~
Creator: Olson, D. L. & Matlock, D. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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