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Geothermal Education Office summary report: First year of operations, January 1, 1990--December 31, 1990

Description: Our mission for 1990 was to increase students' awareness and appreciation of geothermal energy with respect to both direct use and electrical power production.'' Hard work has accomplished much: using both responsive and pro-active techniques, the Geothermal Education Office has had national impact on K-12 curriculum as well as on general public awareness of geothermal energy.
Date: December 31, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Maintaining the uranium resources data system and assessing the 1989 US uranium potential resources

Description: Under the Memorandum of Understanding (MOU) between the EIA, US Department of Energy, and the US Geological Survey (USGS), US Department of the Interior, the USGS develops estimates of uranium endowment for selected geological environments in the United States. New estimates of endowment are used to update the Uranium Resources Assessment Data (URAD) System which, beginning in 1990, is maintained for EIA by the USGS. For 1989, estimates of US undiscovered resources were generated using revised … more
Date: December 31, 1990
Creator: McCammon, R. B. (Geological Survey, Reston, VA (USA)); Finch, W. I.; Grundy, W. D. & Pierson, C. T. (Geological Survey, Denver, CO (USA))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A miniature inexpensive, oxygen sensing element

Description: Current progress on the development of the oxygen sensor is reviewed. During this quarter the sensor seal and heating element was redesigned and prototypes were tested. A combustor experiment will be performed in the next one to two quarters. Related information on lean sensors is also reviewed. Additional testing was done on multilayer sensors pulled from storage. (SM)
Date: December 31, 1990
Creator: Arenz, R.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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[Investigation of transitions from order to chaos in dynamical systems]. Annual progress report

Description: This report discusses: torus structure in higher dimensional hamiltonian systems; particle heating and stochastic web diffusion; scaling behavior of coupled conservative nonlinear systems; box counting algorithm and dimensional analysis of a pulsar; and universality of coupled nonlinear systems. (LSP)
Date: December 31, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Slurry phase Fischer-Tropsch synthesis: Cobalt plus a water-gas shift catalyst. [Quarterly] report, July 1, 1990--September 30, 1990

Description: A Co/MgO/SiO{sub 2} Fischer-Tropsch catalyst was operated simultaneously with a Cu/ZnO/Al{sub 2}O{sub 3} water-gas-shift catalyst in a slurry reactor for over 400 hours. The process conditions were held constant at a temperature of 240{degrees}C, a pressure of 0.79 MPa, and a 1.1 H{sub 2}/CO feed of 0.065 Nl/min-g.cat. The Fischer-Tropsch activity remained constant at the level predicted by the operation of the Co/MgO/SiO{sub 2} catalyst alone. The water-gas-shift reaction was near equilibrium.… more
Date: December 31, 1990
Creator: Chanenchuk, C. A.; Yates, I. C. & Satterfield, C. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Applications of neural networks to monitoring and decision making in the operation of nuclear power plants. Summary

Description: Application of neural networks to monitoring and decision making in the operation of nuclear power plants is being investigated under a US Department of Energy sponsored program at the University of Tennessee. Projects include the feasibility of using neural networks for the following tasks: (1) diagnosing specific abnormal conditions or problems in nuclear power plants, (2) detection of the change of mode of operation of the plant, (3) validating signals coming from detectors, (4) review of ``… more
Date: December 31, 1990
Creator: Uhrig, R. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The phenotype of Arabidopsis thaliana det1 mutants suggest a role for cytokinins in greening. Progress report

Description: When grown in the absence of light, the det1 mutants of Arabidopsis thaliana develop characteristics of light-grown plants by morphological, cellular, and molecular criteria. Further, in light-grown plants, mutations in the DET1 gene affect cell-type-specific expression of light-regulated genes and the chloroplast developmental program. Here we show that the addition of exogenously added cytokinins (either 2-isopentenyl adenine, kinetin, or benzyladenine) to the growth medium of dark-germinated… more
Date: December 31, 1990
Creator: Chory, J.; Aguilar, N. & Peto, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The ANL electric vehicle battery R&D program for DOE-EHP. Quarterly progress report, October--December 1990

Description: The Electrochemical Technology Program at Argonne National Laboratory (ANL) provides technical and programmatic support to DOE`s Electric and Hybrid Propulsion Division (DOE-EBP). The goal of DOE-EHP is to advance promising EV propulsion technologies to levels where industry will continue their commercial development and thereby significantly reduce petroleum consumption in the transportation sector of the US economy. In support of this goal, ANL provides research, development, testing/evaluati… more
Date: December 31, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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National Academy of Sciences and Academy of Sciences of the USSR workshop on structure of the eucaryotic genome and regulation of its expression. Final report

Description: This report provides a brief overview of the Workshop on Structure of the Eukaryotic Genome and Regulation of its Expression held in Tbilisi, Georgia, USSR. The report describes the presentations made at the meeting but also goes on to describe the state of molecular biology and genetics research in the Soviet Union and makes recommendations on how to improve future such meetings.
Date: December 31, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Neutron scattering studies of magnetism in the high-Tc materials

Description: In this paper, I shall attempt to review what has been learned about magnetism in the high-{Tc} family of compounds using neutron scattering techniques. Whether or not it is true that magnetic effects are involved in an essential way in the mechanism for superconductivity in these materials (a point which has not yet been firmly established), they offer fascinating examples for the study of magnetism for its own sake, being realizations of spin {1/2} 2D quantum antiferromagnets. Further, the ra… more
Date: December 31, 1990
Creator: Sinha, S. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Advanced combustion system for industrial boilers. Phase 2, Quarterly technical progress report, October--December 1990

Description: This During this quarter, work continued on development/improvement of the low-NO{sub x} coal combustor for the boiler system. Reburning tests were conducted in the external, water-cooled test duct with a length of 15 feet using ultra fine coal with propane to reduce the NO{sub x} levels to as low as 0.295 lb-NO{sub x}/MBtu. Work also continued on design/construction of the new coal-feed system that will be used for the 100-hour demonstration test with the on-line refillable coal hopper operati… more
Date: December 31, 1990
Creator: Wagoner, C. L.; Foote, J. P.; Millard, W. P.; Attig, R. C. & Schulz, R. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Clean coal technology III (CCT III): 10 MW demonstration of gas suspension absorption. Technical progress report, October 1, 1990--December 31, 1990

Description: This project will be the first North American demonstration of the Gas Suspension Absorption (GSA) System in its application for flue gas desulfurization. The purpose of this project is to demonstrate the high sulfur dioxide (SO{sub 2}) removal efficiency as well as the cost effectiveness of the GSA system. GSA is a novel concept for flue gas desulfurization developed by F.L. Smidth miljo (FLS miljo). The GSA system is distinguished in the European market by its low capital cost, high SO{sub 2}… more
Date: December 31, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Precision wire feeder for small diameter wire

Description: This invention is comprised of a device for feeding small diameter wire having a diameter less than .04 mm (16 mil) to a welding station which includes a driving wheel for controllably applying a non-deforming driving force to the wire to move the free end of the wire towards the welding station; and a tension device such as a torque motor for constantly applying a reverse force to the wire in opposition to the driving force to keep the wire taut. 1 fig.
Date: December 31, 1990
Creator: Brandon, E. D.; Hooper, F. M. & Reichenbach, M. L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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SiO2 Membranes for H2 Separation in Coal Gas Processing. Quarterly Progress Report, March 1, 1990--May 31, 1990

Description: The project objectives are (1) to synthesize permselective ceramic membranes by chemical vapor deposition of SiO{sub 2} and other oxides within the walls of porous support tubes, (2) measure membrane permeability and thermal stability to various gases at 200--700{degrees}C and (3) develop a mathematical model for the chemical vapor deposition of the permselective oxide within the porous support tube.
Date: December 31, 1990
Creator: Gavalas, G. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Apportionment of multiple aerosol size distributions modes using factor analysis techniques

Description: This research in progress is concerned with developing the capability to ojectively partition aerosol size distribution data into a small number of modes, that together explain most of the variation of the observed data. It is desired to determine from analysis in the field of the optical spectrometer data when a particular mode is present and to collect filter samples to determine the chemical composition of that mode. The results would relate aerosol size distributions to chemical composition. more
Date: December 31, 1990
Creator: Williams, Allen
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A backscattering spectrometry device for identifying unknown elements present in a workpiece

Description: This invention is comprised of a backscattering spectrometry method and device for identifying and quantifying impurities in a workpiece during processing and manufacturing of that workpiece. While the workpiece is implanted with an ion beam, that same ion beam backscatters resulting from collisions with known atoms and with impurities within the workpiece. Those ions backscatter along a predetermined scattering angle and are filtered using a self-supporting filter to stop the ions with a lower… more
Date: December 31, 1990
Creator: Doyle, Barney L. & Knapp, James A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Helium accumulation effects using bench marked 0-D model

Description: Helium ``ash`` accumulation is a key issue relative to our ability to achieve a steady-state ignited tokamak. 1-D transport simulations using the BALDUR code have been used to examine the correlation between the global helium particle confinement time and the edge exhaust (or recycling) efficiency. This provides a way to benchmark the widely used 0-D model. In this paper, burn conditions for an ITER-like plasma with various helium edge recycling coefficients are examined.
Date: December 31, 1990
Creator: Hu, S. C. & Miley, G. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Pyrolysis and gasification of coal at high temperatures. Quarterly progress report No. 11, March 15, 1990--June 15, 1990

Description: We made considerable progress towards completing the development of a thermogravimetric reactor with video microscopy imaging capabilities (TGA/VMI). The video micrOSCOPY components were designed, installed and are currently under testing. With the newly developed TGA/VNH apparatus we can directly observe macroscopic changes in the morphology of pyrolyzing particles and thermal ignitions of burning particles while simultaneously monitoring the weight of pyrolyzing or reacting samples. The syste… more
Date: December 31, 1990
Creator: Zygourakis, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Expert system driven fuzzy control application to power reactors

Description: For the purpose of nonlinear control and uncertainty/imprecision handling, fuzzy controllers have recently reached acclaim and increasing commercial application. The fuzzy control algorithms often require a ``supervisory`` routine that provides necessary heuristics for interface, adaptation, mode selection and other implementation issues. Performance characteristics of an on-line fuzzy controller depend strictly on the ability of such supervisory routines to manipulate the fuzzy control algorit… more
Date: December 31, 1990
Creator: Tsoukalas, L. H.; Berkan, R. C.; Upadhyaya, B. R. & Uhrig, R. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Whisper gallery mirrors reflectivities from 100 {angstrom} to 500 {angstrom}

Description: We have examined optical constants and predicted reflectivities of candidate surface coatings for whisper gallery mirrors in the extreme ultraviolet (100 {Angstrom} to 500 {Angstrom}). Previous work of Vinogradov and coworkers have identified the spectral regime near 100-150 {Angstrom} as particularly promising due to the high whisper gallery mirror reflectivities of the noble metals in the vicinity of their Cooper minima in this regime. We confirm this basic result using newer optical data, an… more
Date: December 31, 1990
Creator: Hung, Tsen-Yu & Hagelstein, P. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

On Defining the Un-Definable: JETS

Description: A brief summary is presented of the current status of jet studies in hadron-hadron collisions. The primary focus is on those issues that would benefit from comparisons of jet samples obtained from hadron-hadron collisions, from e{sup +}e{sup {minus}} annihilation events at LEP and from deep inelastic collisions at HERA. The important point is that, to perform this comparison properly, the jet various samples must be obtained using the same jet definition.
Date: December 31, 1990
Creator: Ellis, Stephen D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Novel methods of copper vapor laser excitation

Description: Microwave and intense electron beam excitation of copper vapor are being investigated to be used in copper vapor lasers for isotope separation. Both methods use copper chloride vapor by heating copper chloride. Helium was used as the buffer gas at 2 to 100 torr. In the microwave system, intense copperlines at 510 nm and 578 nm were observed. Initial electron beam results indicate that light emission follows the beam current.
Date: December 31, 1990
Creator: McColl, W. B.; Ching, H.; Bosch, R.; Brake, M. & Gilgenbach, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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