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Development of the LICADO coal cleaning process

Description: Development of the liquid carbon dioxide process for the cleaning of coal was performed in batch, variable volume (semi-continuous), and continuous tests. Continuous operation at feed rates up to 4.5 kg/hr (10-lb/hr) was achieved with the Continuous System. Coals tested included Upper Freeport, Pittsburgh, Illinois No. 6, and Middle Kittanning seams. Results showed that the ash and pyrite rejections agreed closely with washability data for each coal at the particle size tested (-200 mesh). A 0.… more
Date: July 31, 1990
Partner: UNT Libraries Government Documents Department
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Cylinder yard inspections and corrective actions

Description: Inspection of valves on stored uranium hexafluoride (UF{sub 6}) cylinders was initiated at the three diffusion plant sites in Oak Ridge, Tennessee, Paducah, Kentucky, and Portsmouth, Ohio as the result of the discovery of valve defects and evidence of valve leaks at the Oak Ridge K-25 plant. The coordinated inspection culminated in the identification of additional factors related to long-term safe storage of UF{sub 6}, and plans for correction of such deficiencies are presently being developed … more
Date: July 31, 1990
Creator: Barlow, C.R. (Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)); Ziehlke, K.T. (MJB Technical Associates (United States)) & Pryor, W.A. (PAI Corp., Oak Ridge, TN (United States))
Partner: UNT Libraries Government Documents Department
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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
Partner: UNT Libraries Government Documents Department
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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))
Partner: UNT Libraries Government Documents Department
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Ambient Weather Model Research and Development: Final Report.

Description: Ratings for Bonneville Power Administration (BPA) transmission lines are based upon the IEEE Standard for Calculation of Bare Overhead Conductor Temperatures and Ampacity under Steady-State Conditions (1985). This steady-state model is very sensitive to the ambient weather conditions of temperature and wind speed. The model does not account for wind yaw, turbulence, or conductor roughness as proposed by Davis (1976) for a real time rating system. The objective of this research has been to deter… more
Date: August 31, 1990
Creator: Walker, Stel Nathan & Wade, John Edward
Partner: UNT Libraries Government Documents Department
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Geochemical and physical properties of soils and shallow sediments at the Savannah River Site

Description: A program to characterize the geochemical and physical properties of the unimpacted soils and shallow sediments at the Savannah River Site (SRS) has been completed. The maximum, minimum, median, standard deviation, and mean values for metals, radionuclides, inorganic anions, organic compounds, and agricultural indicator parameters are summarized for six soil series that were identified as representative of the 29 soil series at SRS. The soils from unimpacted areas of SRS are typical of soils fo… more
Date: August 31, 1990
Creator: Looney, B. B.; Eddy, C. A.; Ramdeen, M.; Pickett, J. (Savannah River Lab., Aiken, SC (USA)); Rogers, V. (Soil Conservation Service, Aiken, SC (USA). Savannah River Site Savannah River Lab., Aiken, SC (USA)); Scott, M. T. et al.
Partner: UNT Libraries Government Documents Department
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Measurement of the Portsmouth Gaseous Diffusion Plant criticality accident alarm

Description: Measurements of the Portsmouth Gaseous Diffusion Plant's nuclear criticality accident radiation alarm signal response time, sound wave frequency, and sound volume levels were made to demonstrate compliance with ANSI/ANS-8.3-1986. A steady-state alarm signal is produced within one-half second of obtaining a two-out-of-three detector trip. The fundamental alarm sound wave frequency is 440 hertz. The sound volume levels are greater than 10 decibels above background and ranged from 100 to 125 A-wei… more
Date: August 31, 1990
Creator: Tayloe, R.W. Jr. (Battelle Columbus (USA)) & McGinnis, B. (Martin Marietta Energy Systems, Inc., Piketon, OH (USA))
Partner: UNT Libraries Government Documents Department
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Real-time multi-dimensional processing hardware designs research activities

Description: In this final report, we summarize some of our results from September 1989 to October 1990. The design, construction, and testing of a four-processor prototype multi-processor (RTP) board using TI TMS320C25 DSP chips has been completed and is reported upon in our separately submitted Final Report on the RADON TRANSFORM COMPUTER'' Project.'' The design of our fully custom CMOS VLSI chip has been completed. The chip has been designed, the layout completed, and the chip is now going through its fi… more
Date: October 31, 1990
Creator: Current, W. (California Univ., Davis, CA (USA). Dept. of Electrical Engineering and Computer Science)
Partner: UNT Libraries Government Documents Department
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Development of the coal quality expert: Project evaluation plan

Description: The overall objective of this project is to provide the utility industry with a PC expert system to confidently and inexpensively evaluate the potential for coal cleaning, blending, and switching options to reduce emissions while producing lowest cost electricity. Specifically, this project will: (1) Enhance the existing Coal Quality Information System database and Coal Quality Impact Model to allow confident assessment of the effects of cleaning on specific power plant costs and performance. (… more
Date: August 31, 1990
Partner: UNT Libraries Government Documents Department
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Impulse gage development for the 100-200 ktap range

Description: Special effects underground test (UGT) material response and source diagnostics data require impulse gages that can be used in the 50--150 ktap range and have equilibrated from electrical and mechanical noise sources within 0.001 s. Such gages were designed, analyzed, and tested under this program. One- and two-dimensional stress propagation calculations were performed and predictions were developed for deformation of the gage specimen cup. These predictions were conservative when compared to g… more
Date: July 31, 1990
Creator: Rose, P.C. & Naumann, W.J. (General Research Corp., Santa Barbara, CA (USA). Advanced Technologies Div.)
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.
Partner: UNT Libraries Government Documents Department
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Synthesis and Properties of Novel Organometallic Polymers

Description: 1,1'-Diruthenocenylnaphthalene has been prepared and its molecular structure has been determined by x-ray diffraction, in order to compare its structure with that of its iron analog. The molecular structure of the half oxidized form of 1,1'-diferocenylnaphthalene has also be determined. Comparison of these structures has made it possible to assign the origins of observed deformations in these substances. Polymeric, face-to-face metallocenes related to the 1,8-dimetallocenylnaphthalenes (M=Fe, R… more
Date: May 31, 1990
Partner: UNT Libraries Government Documents Department
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Liquid Phase Methanol Laporte Process Development Unit: Modification, Operation, and Support Studies

Description: A gas phase and a slurry phase radioactive tracer study was performed on the 12 ton/day Liquid Phase Methanol (LPMEOH) Process Development Unit (PDU) in LaPorte, Texas. To study the gas phase mixing characteristics, a radioactive argon tracer was injected into the feed gas and residence time distribution was generated by measuring the response at the reactor outlet. Radioactive manganese oxide powder was independently injected into the reactor to measure the slurry phase mixing characteristics.… more
Date: August 31, 1990
Partner: UNT Libraries Government Documents Department
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Transport properties of multi-component fluids and of suspensions

Description: This report summarizes work performed under Grant Number DE-FG03-88ER13911 for the period June 15, 1988 through October 31, 1990. The first year's work dealt with derivations of the fundamental equations describing suspensions of inelastic particles. This work was documented in last year's annual progress report, and has since been published in Physica A. We include the published version as an Appendix to this report. During the past year our work has focused on derivations of the nonlinear hyd… more
Date: October 31, 1990
Creator: Oppenheim, I. & McBride, J.
Partner: UNT Libraries Government Documents Department
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Precision pulse-timing instrumentation for ultrasonic nondestructive testing

Description: A new, pulse-timing discriminator and B-scan time-to-pulse-height converter have been developed for the inspection of production parts. The discriminator is easy to operate and features automatic echo gating and automatic pulse polarity discrimination. This instrument combines the noise-blanking advantages of threshold discrimination with the echo-timing precision of zero-crossing discrimination to improve measurement accuracy by a factor of two over the best precious techniques. When used with… more
Date: August 31, 1990
Creator: Duncan, M. G.
Partner: UNT Libraries Government Documents Department
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The Development and Field Testing of a System for Determination of Ultrafine Activity Particle Size Distribution and Working Levels

Description: Recent investigations of radon decay products in indoor air have shown that what has been called the unattached'' fraction is in fact an ultrafine size aerosol with diameters in the range of 0.5 to 10 nm. There are a number of difficulties in characterizing particles in this size range. Classical diffusion batteries using screens with high mesh numbers do not have the resolution to give detailed information for the ultra fine range. The use of single screens of differing mesh numbers (Graded Sc… more
Date: October 31, 1990
Creator: Hopke, Phillip K.
Partner: UNT Libraries Government Documents Department
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A system architecture for long duration free floating flight for military applications

Description: Accessibility is today's space frontier. Our need for wide-band global communications, earth imaging an sensing, atmospheric measurements and military reconnaissance is endless but growing dependence on space-based systems raises concerns about potential vulnerability. Military commanders want space assets more accessible and under direct local control. As a result, a robust and low cost access to space-like capability has become a national priority. Buoyant vehicles, free floating in the middl… more
Date: August 31, 1990
Creator: Epley, L.E. (CIRRUS Aerospace Corp., Burke, VA (USA))
Partner: UNT Libraries Government Documents Department
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Damage parameter comparison for candidate intense neutron test facilities for fusion materials

Description: It is recognized worldwide that an intense source of fusion energy neutrons is needed to evaluate candidate fusion materials. At an International Energy Agency (IEA) workshop held in San Diego in February 1989, an Evaluation Panel recommended that three neutron source concepts be developed further. The panel also recommended that further comparisons were needed of their irradiation environments. In this paper, a comparison is made of damage parameters for beryllium, carbon, silicon, vanadium, i… more
Date: July 31, 1990
Creator: Doran, D. G.; Greenwood, L. R. & Mann, F. M.
Partner: UNT Libraries Government Documents Department
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Silicon drift-chamber studies for possible use at RHIC

Description: It is proposed to continue the program now underway at the University of Pittsburgh to study the feasibility of using silicon drift-chambers as particle tracking devices at RHIC. We are currently testing a UA6-type detector obtained from BNL and plan to also study a new device that will become available this year: a cylindrical geometry detector designed for NA45 (CERN). In addition we propose to fabricate and study a detector to be used in vertex determination for the RHIC OASIS experiment. Th… more
Date: October 31, 1990
Creator: Humanic, T.J.
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
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.
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.
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
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
Partner: UNT Libraries Government Documents Department
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