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Closed Loop Test Facility for hot dirty gas valves (open access)

Closed Loop Test Facility for hot dirty gas valves

A design study of a closed loop test facility for eight-inch hot dirty gas valves is presented. The objective of the facility is to quality valves for use in coal gasifiers, combined cycle plants, and pressurized fluid bed combustors. Outline sketches and estimated costs are presented for the selected design.
Date: February 6, 1980
Creator: unknown
System: The UNT Digital Library
Influence of radiation transport on lithium fall motion in an ICF reactor (open access)

Influence of radiation transport on lithium fall motion in an ICF reactor

The fluid motion in the cavity of a HYLIFE reactor was calculated for the two extreme cases of optically thin and thick lithium gas in the hot core. The distinction is important because in the optically thin case (emission approximation) a major fraction of the gas energy is re-radiated to the main fall, following the lithium implosion, whereas in the optically thick case (diffusion approximation) virtually none escapes. This, in turn, has a major influence on the impulse ultimately imparted to the reactor walls. The complete set of finite difference equations used is given in an appendix.
Date: March 6, 1980
Creator: Glenn, L. A.
System: The UNT Digital Library
Nuclear Power: Three Mile Island Accident-- Congressional Rseponse and Investigations (open access)

Nuclear Power: Three Mile Island Accident-- Congressional Rseponse and Investigations

This report contains background information and investigations regarding the Three Mile Island nuclear power accident near Harrisburg, Pennsylvania. It also shows the President's Commission and overall chronology of Committee responses on one of the largest nuclear power plant accident.
Date: March 6, 1980
Creator: Donnelly, Warren H. & Kramer, Donna S.
System: The UNT Digital Library
Texas Turkey Poults: For Week Ending March 1, 1980 (open access)

Texas Turkey Poults: For Week Ending March 1, 1980

Weekly report of the Texas Crop and Livestock Reporting Service on turkey poult numbers in Texas and compared with other states. It includes compiled statistics across six consecutive weeks during two years for turkey eggs set and poults hatched.
Date: March 6, 1980
Creator: Texas Crop and Livestock Reporting Service
System: The Portal to Texas History
Outline of status of national seismic stations (NSS) in CTB negotiations (open access)

Outline of status of national seismic stations (NSS) in CTB negotiations

The paper discusses two treaties that are being negotiated: Multilateral Treaty, which bans all nuclear weapon tests and establishes a moratorium on PNEs (Peaceful Nuclear Explosions) for the life of the treaty, and a separate verification agreement, which provides for much more extensive verification measures that does the Multilateral Treaty and to which only the US, UK, and USSR will adhere. On the latter treaty, agreement has been reached that there will be improved seismic stations (NSS) in each country. Discussed are the outstanding general points of agreement or disagreement on NSS; technical characteristics of NSS; and a joint cooperative program for NSS.
Date: May 6, 1980
Creator: Heckrotte, W.
System: The UNT Digital Library
Introduction to magnetic confinement fusion diagnostics (open access)

Introduction to magnetic confinement fusion diagnostics

These notes present a brief survey of some of the current diagnostic techniques used in magnetic fusion plasma devices. To give an idea of the range of parameters and geometries encountered the parameters of four representative experiments - PLT, TMX, ZT-40 and EBT-I(S) - are given. The central issue of all experiments is to understand the flow of power which can be summarized by two volume integrated equations for the ions and electrons.
Date: June 6, 1980
Creator: Turner, W.C.
System: The UNT Digital Library
Review of Technology for Arctic Offshore Oil and Gas Recovery. Appendices (open access)

Review of Technology for Arctic Offshore Oil and Gas Recovery. Appendices

This volume contains appendices of the following: US Geological Survey Arctic operating orders, 1979; Det Noske Vertas', rules for the design, construction and inspection of offshore technology, 1977; Alaska Oil and Gas Association, industry research projects, March 1980; Arctic Petroleum Operator's Association, industry research projects, January 1980; selected additional Arctic offshore bibliography on sea ice, icebreakers, Arctic seafloor conditions, ice-structures, frost heave and structure icing.
Date: June 6, 1980
Creator: Sackinger, W. M.
System: The UNT Digital Library
Stepping motor control processor reference manual. Volume I (open access)

Stepping motor control processor reference manual. Volume I

This manual is intended to serve several purposes. The first goal is to describe the capabilities and operation of the SMC processor package from an operator or user point of view. Secondly, the manual will describe in some detail the basic hardware elements and how they can be used effectively to implement a step motor control system. Practical information on the use, installation and checkout of the hardware set is presented in the following sections along with programming suggestions. Available related system software is described in this manual for reference and as an aid in understanding the system architecture. Section two presents an overview and operations manual of the SMC processor describing its composition and functional capabilities. Section three contains hardware descriptions in some detail for the LLL-designed hardware used in the SMC processor. Basic theory of operation and important features are explained.
Date: June 6, 1980
Creator: Holloway, F.W.; VanArsdall, P.J.; Suski, G.J.; Gant, R.G. & Rash, M.
System: The UNT Digital Library
Joining of ceramics for high performance energy systems. Mid-term progress report, August 1, 1979-March 31, 1980 (open access)

Joining of ceramics for high performance energy systems. Mid-term progress report, August 1, 1979-March 31, 1980

The subject program is primarily an exploratory and demonstration study of the use of silicate glass-based adhesives for bonding silicon-base refractory ceramics (SiC, Si/sub 3/N/sub 4/). The projected application is 1250 to 2050/sup 0/F relaxing joint service in high-performance energy conversion systems. The five program tasks and their current status are as follows. Task 1 - Long-Term Joint Stability. Time-temperature-transformation studies of candidate glass adhesives, out to 2000 hours simulated service exposure, are half complete. Task 2 - Environmental and Service Effects on Joint Reliability. Start up delayed due to late delivery of candidate glass fillers and ceramic specimens. Task 3 - Viscoelastic Damping of Glass Bonded Ceramics. Promising results obtained over approximately the same range of glass viscosity required for joint relaxation function (10/sup 7.5/ to 10/sup 9.5/ poise). Work is 90% complete. Task 4 - Crack Arrest and Crack Diversion by Joints. No work started due to late arrival of materials. Task 5 - Improved Joining and Fabrication Methods. Significant work has been conducted in the area of refractory pre-glazing and the application and bonding of high-density candidate glass fillers (by both hand-artisan and slip-spray techniques). Work is half complete.
Date: October 6, 1980
Creator: Smeltzer, C E & Metcalfe, A G
System: The UNT Digital Library
Development of advanced concepts for improved heavy water production technology. Tri-quarterly report, January 1-September 30, 1980 (open access)

Development of advanced concepts for improved heavy water production technology. Tri-quarterly report, January 1-September 30, 1980

Research into deuterium-from-protium isotope separation via both metal hydride chromatography and CO/sub 2/ laser multiple-photon dissociation (MPD) of trifluoromethane (CDF/sub 3//CHF/sub 3/) is discussed. Several new classes of alloy compositions, including Mg-rare earth, NiTi/sub x/, and (Ca+Ce,Zr,Ti)./sub 8//sup -/Ni/sub 4/Cu compounds, were evaluated for chromatograhic isotope separation; no tested alloy exhibited properties suitable for commercial deuterium separation. For deuterium separation by MPD of CDF/sub 3/, construction of a CO/sub 2/ laser system was completed that is capable of delivering either 2 nsec short pulses at a single wavelength or 200 nsec long pulses simulatneously at two different laser frequencies. The wavelength dependence of single-line multiple-photon dissociation probability of CDF/sub 3/ was measured, and is reported here. Deuterium separation by CO/sub 2/ laser photolysis of CDF/sub 3//CHF/sub 3/ near 10.3 ..mu.. using approx. 2 nsec pulses still appears to be a commercially viable process for heavy water production.
Date: November 6, 1980
Creator: Aldridge, F. T.; Herman, I. P.; Marling, J. B. & Wood, L. L.
System: The UNT Digital Library
Development of advanced technologies for photochemical tritium recovery. Bi-quarterly program report, 1 April-30 September 1980 (open access)

Development of advanced technologies for photochemical tritium recovery. Bi-quarterly program report, 1 April-30 September 1980

The laboratory facility for photochemical tritium separation research has been completed. Methods for synthesizing the mono-tritiated halogenated methanes have been developed. Notably, CTF/sub 3/ has been synthesized and spectrally analyzed. The CTF/sub 3/ vibrational frequencies are found to be in quite good agreement with earlier calculations.
Date: November 6, 1980
Creator: Herman, I. P. & Marling, J. B.
System: The UNT Digital Library
Patterns of United States mortality for ten selected causes of death (open access)

Patterns of United States mortality for ten selected causes of death

Income, ethnicity, education, and occupation are examples of socio-economic factors associated with the occurrence of disease, whether an investigation focuses on an individual or on an aggregation of individuals. In this study, data aggregated to the county level are used to explore two issues - geographic variation and geographic covariation of ten selected causes of death in the United States. The counties of the United States are characterized by 15 socio-economic variables and age-adjusted mortality rates for the ten selected causes of death. The observed variation among the US counties, as measured by the socio-economic variables, is first assessed, then the geographic variation and covariation are described for each cause of death and, finally, the covariation among causes of death is analyzed after adjusting for the influences of the measured sources of county variation.
Date: November 6, 1980
Creator: Selvin, S.; Sacks, S.T. & Merrill, D.W.
System: The UNT Digital Library
Remote sensing of soil radionuclide fluxes in a tropical ecosystem (open access)

Remote sensing of soil radionuclide fluxes in a tropical ecosystem

We are using a transponding geostationary satellite to collect surface environmental data to describe the fate of soil-borne radionuclides. The remote, former atomic testing grounds at the Eniwetok and Bikini Atolls present a difficult environment in which to collect continuous field data. Our land-based, solar-powered microprocessor and environmental data systems remotely acquire measurements of net and total solar radiation, rain, humidity, temperature, and soil-water potentials. For the past year, our water flux model predicts wet season plant transpiration rates nearly equal to the 6 to 7 mm/d evaporation pan rate, which decreases to 2 to 3 mm/d for the dry season. Radioisotopic analysis confirms the microclimate-estimated 1:3 to 1:20 soil to plant /sup 137/Cs dry matter concentration ratio. This ratio exacerbates the dose to man from intake of food plants. Nephelometer measurements of airborne particulates presently indicate a minimum respiratory radiological dose.
Date: November 6, 1980
Creator: Clegg, B.; Koranda, J.; Robinson, W. & Holladay, G.
System: The UNT Digital Library
Texas Turkey Poults: For Week Ending November 1, 1980 (open access)

Texas Turkey Poults: For Week Ending November 1, 1980

Weekly report of the Texas Crop and Livestock Reporting Service on turkey poult numbers in Texas and compared with other states. It includes compiled statistics across six consecutive weeks during two years for turkey eggs set and poults hatched.
Date: November 6, 1980
Creator: Texas Crop and Livestock Reporting Service
System: The Portal to Texas History
How and Where to Find a Job Overseas Sources of Information (open access)

How and Where to Find a Job Overseas Sources of Information

This report lists books, pamphlets, and organizations that provide information on numerous aspects of employment abroad such as resume writing, living conditions overseas, and etc.
Date: January 6, 1981
Creator: Einhorn, Steven, C.
System: The UNT Digital Library
The Legislative Scene: Selected News Letters, Journals and Other Periodical Publications Covering Congressional Activities (open access)

The Legislative Scene: Selected News Letters, Journals and Other Periodical Publications Covering Congressional Activities

This report is on The Legislative Scene: Selected News Letters, Journals, and Other Periodical Publications Covering Congressional Activities.
Date: January 6, 1981
Creator: Hadlock, Walter J. & Malloy, Isabelle
System: The UNT Digital Library
Particle characterization for geothermal operations (open access)

Particle characterization for geothermal operations

A detailed summary of an ongoing evaluation of existing particle measuring methodology with emphasis on (a) adapting of existing methods in geothermal operations and (b) further development of existing instrumentation for field use is presented. The various instruments and methods used and/or suggested for particle characterization are described in detail. Theoretical and practical aspects of particle characterizations are outlined. A plan for further laboratory and field experiments is outlined. The instrumentations to be selected after some additional lab and field tests will be used in the studies on (a) formation damage through particle invasion and (b) characterizing and monitoring of particle suspensions in geothermal operations.
Date: January 6, 1981
Creator: Vetter, O.J. & Kandarpa, V.
System: The UNT Digital Library
Evaluation of potential food applications of dried distillers spent grain (DSG). Final research report (open access)

Evaluation of potential food applications of dried distillers spent grain (DSG). Final research report

Results from experimental test bakes indicate that dried distillers spent grain (DSG) can be used to replace up to 15% of the flour for the production of an acceptable variety bread, provided that the DSG is processed under optimum conditions for a satisfactory flavor and color development. The raw materials used for the mash bill may also affect the taste of the finished product. (MHR)
Date: February 6, 1981
Creator: unknown
System: The UNT Digital Library
Process feasibility study in support of silicon material Task I. Final report, October 1, 1975-February 6, 1981 (open access)

Process feasibility study in support of silicon material Task I. Final report, October 1, 1975-February 6, 1981

The Low-Cost Solar Array (LSA) Project is directed toward effective cost reduction in the production of silicon for solar cells. Results are presented for process system properties, chemical engineering and economic analyses of the new technologies and processes being developed for the production of lower cost silicon for solar cells. Major physical, thermodynamic and transport property data are reported for the following silicon source and processing chemical materials: silane, silicon tetrachloride, trichlorosilane, dichlorosilane, silicon tetrafluoride, and silicon. The property data are reported for critical temperature, critical pressure, critical volume, vapor pressure, heat of vaporization, heat capacity, density, surface tension, viscosity, thermal conductivity, heat of formation and Gibb's free energy of formation. Chemical engineering analyses involving the preliminary process design of a plant (1000 MT/yr capacity) to produce silicon via the technology under consideration were accomplished for the following processes: UCC silane process for silicon, BCL process for silicon, conventional polysilicon process (Siemens technology), SiI/sub 4/ decomposition process, and DCS process (dichlorosilane).Major activities in chemical engineering analyses include base case conditions, reaction chemistry, process flowsheet, material balance, energy balance, property data, equipment design, major equipment list, production labor and forward for economic analysis. The process design package provides detailed data for …
Date: February 6, 1981
Creator: Yaws, C. L.; Li, K. Y.; Hopper, J. R.; Fang, C. S. & Hansen, K. C.
System: The UNT Digital Library
Texas Turkey Poults: For Week Ending January 31, 1981 (open access)

Texas Turkey Poults: For Week Ending January 31, 1981

Weekly report of the Texas Crop and Livestock Reporting Service on turkey poult numbers in Texas and compared with other states. It includes compiled statistics across six consecutive weeks during two years for turkey eggs set and poults hatched.
Date: February 6, 1981
Creator: Texas Crop and Livestock Reporting Service
System: The Portal to Texas History
Beam dynamics in the ETA and ATA 10 kA linear induction accelerators: observations and issues (open access)

Beam dynamics in the ETA and ATA 10 kA linear induction accelerators: observations and issues

The 10 kA ETA and ATA linear induction accelerators are described. Beam instability is the major concern in these high current machines, and the current status of theoretical understanding, and experimental investigations with the 8 cavity ETA, are reviewed. Modifications to the induction cavities are described that have essentially eliminated the transverse resonant modes seen in the ETA.
Date: March 6, 1981
Creator: Briggs, R. J.; Birx, D. L.; Caporaso, G. J.; Fessenden, T. J.; Hester, R. E.; Melendez, R. et al.
System: The UNT Digital Library
Characteristics of coal/light hydrocarbon slurries in spray combustion. Semi-annual progress report, 1 September 1980-28 February 1981 (open access)

Characteristics of coal/light hydrocarbon slurries in spray combustion. Semi-annual progress report, 1 September 1980-28 February 1981

This report summarizes the progress made during the first six months of the grant period. The status of each of the three major task areas is discussed: the atomization study, the analytical droplet model, and the combustion study. The time-period has been used primarily to design and begin fabrication of the experimental atomization and combustion facilities. No data is presented in either of these areas. Significant progress has been made in the development of the numerical droplet model. The results of a preliminary parametric study are presented for a single coal particle in a one-millimeter methanol droplet. The importance of gas phase velocity and coal particle diameter bringing the solid material to the droplet surface is discussed.
Date: March 6, 1981
Creator: Grosshandler, William L.; Crowe, Clayon T. & Chung, Jacob N.
System: The UNT Digital Library
Development of underground-mine cost-estimating equations. [Dependence of initial capital cost, deferred capital cost and annual operating cost on region, annual mine output and seam depth] (open access)

Development of underground-mine cost-estimating equations. [Dependence of initial capital cost, deferred capital cost and annual operating cost on region, annual mine output and seam depth]

Table 3.3 summarizes the initial capital, deferred capital, and operating costs (in millions of 1980 dollars) for the four regionally-based underground model mines. The initial capital is divided into two components, fixed and variable. The fixed component is just the investment cost for surface facilities, which is assumed to be independent of mine size. The rest of the initial capital cost is associated with production (primarily face-related) and is assumed to vary linearly with mine size (i.e., annual output). There exists a concern that deferred capital costs will change due to entry mode. However, the installations concerned primarily with this point are depreciated off over the mine life and are not targeted for replacement. Therefore, deferred capital costs will not change significantly with entry mode changes or seam depth. In conclusion, it is our feeling that, within the resources of this project, development of cost adjustment factors relating productivity to various supply regions and seam heights is not practical. Assuming that productivity and, therefore, cost is independent of seam height will introduce errors into the system; however, their extent should be minimized by the incorporation of multiple model mines into the RAMC. Lastly, the relationship presented in this memorandum for …
Date: March 6, 1981
Creator: unknown
System: The UNT Digital Library
Existence of a Last Invariant of Conservative Motion (open access)

Existence of a Last Invariant of Conservative Motion

None
Date: March 6, 1981
Creator: Hall, Laurence S.
System: The UNT Digital Library