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Texas Transit Statistics: 1984
Annual compilation of tabulated data regarding public transit and other transportation in the state of Texas.
Date:
~1985
Creator:
Texas. Division of Public Transportation.
System:
The Portal to Texas History
Texas Transit Statistics: 1985
Annual compilation of tabulated data regarding public transit and other transportation in the state of Texas.
Date:
~1985
Creator:
Texas. Division of Public Transportation.
System:
The Portal to Texas History
17 wells: lithologic logs and temperature depth data
None
Date:
January 1, 1980
Creator:
unknown
System:
The UNT Digital Library
60 GHz gyrotron development program. Quarterly report No. 4, April-June 1980
The objective of this program is to develop a microwave oscillator capable of producing 200 kW of CW output power at 60 GHz. The use of cyclotron resonance interaction is being pursued. The design and early procurement and construction phases of this program are discussed.
Date:
January 1, 1980
Creator:
Shively, J.F.; Grant, T.J.; Stone, D.S.; Symons, R.S. & Wendell, G.E.
System:
The UNT Digital Library
60 GHz gyrotron development program. Quarterly report No. 5, July-September 1980
The objective of this program is to develop a microwave oscillator capable of producing 200 kW of CW output power at 60 GHz. The use of cyclotron resonance interaction is being pursued. The design, procurement and early construction phases of this program are discussed.
Date:
January 1, 1980
Creator:
Shively, J.F.; Grant, T.J.; Nordquist, A.L.; Stone, D.S. & Wendell, G.E.
System:
The UNT Digital Library
700, 100, and 20 hp combustion test facility yearly activity report for the period April 1, 1979 to April 1, 1980
Management and Technical Services Co./ General Electric was awarded the contract to operate, modify and maintain the DOE/PETC 700 hp, 100 hp, and 20 hp Combustion Test Facility. These facilities were designed and built by the Department of Energy at Pittsburgh Energy Technology Center and its ultimate success is the responsibility of DOE/PETC. MATSCO/GE will provide support to assist in the goal of successful operation of this pilot plant facility. The primary objective of the DOE/PETC 700 hp and 100 hp CTF is to establish the practicality of coal oil slurry combustion as a technically, economically and environmentally feasible retrofit technology. The 20 hp CTF is to provide a test bed to evaluate synthetic fuels for its technical feasibility and its effect on the environment. Four series of combustion tests were completed. Coal-oil mixes for all tests were number 6 fuel oil and Pittsburgh Seam Coal. The tests were executed successfully. Operational problems were handled as required without excessive delay of the testing program. Additional studies performed concurrently with the combustion testing included flame studies, stack emissions studies during all tests, standard measurements of equipment wear after each test series and extensive erosion and corrosion analyses of boiler test coupons …
Date:
January 1, 1980
Creator:
unknown
System:
The UNT Digital Library
1979-1980 Geothermal Resource Assessment Program in Washington
Separate abstracts were prepared for seven papers. Also included are a bibliography of geothermal resource information for the State of Washington, well temperature information and locations in the State of Washington, and a map of the geology of the White Pass-Tumac Mountain Area, Washington. (MHR)
Date:
1980
Creator:
Korosec, M. A. & Schuster, J. E.
System:
The UNT Digital Library
85Kr management trade-offs: a perspective to total radiation dose commitment
Radiological consequences arising from the trade-offs for /sup 85/Kr waste management from possible nuclear fuel resource recovery activities have been investigated. The reference management technique is to release all the waste gas to the atmosphere where it is diluted and dispersed. A potential alternative is to collect, concentrate, package and submit the gas to long-term storage. This study compares the radiation dose commitment to the public and to the occupationally exposed work force from these alternatives. The results indicate that it makes little difference to the magnitude of the world population dose whether /sup 85/Kr is captured and stored or chronically released to the environment. Further, comparisons of radiation exposures (for the purpose of estimating health effects) at very low dose rates to very large populations with exposures to a small number of occupationally exposed workers who each receive much higher dose rates may be misleading. Finally, cost studies (EPA 1976 and DOE 1979a) show that inordinate amounts of money will be required to lower this already extremely small 80-year cumulative world population dose of 0.05 mrem/person (<0.001% of natural background radiation for the same time period).
Date:
January 1, 1980
Creator:
Mellinger, P.J.; Hoenes, G.R.; Brackenbush, L.W. & Greenborg, J.
System:
The UNT Digital Library
Abilene Fire Department Annual Report: 1980
Annual report of the Abilene Fire Department describing the organization and administration, with updates on goals, activities, and accomplishments during fiscal year 1980.
Date:
1980
Creator:
Abilene (Tex.). Fire Department.
System:
The Portal to Texas History
ac power control in the Core Flow Test Loop
This work represents a status report on a development effort to design an ac power controller for the Core Flow Test Loop. The Core Flow Test Loop will be an engineering test facility which will simulate the thermal environment of a gas-cooled fast-breeder reactor. The problems and limitations of using sinusoidal ac power to simulate the power generated within a nuclear reactor are addressed. The transformer-thyristor configuration chosen for the Core Flow Test Loop power supply is presented. The initial considerations, design, and analysis of a closed-loop controller prototype are detailed. The design is then analyzed for improved performance possibilities and failure modes are investigated at length. A summary of the work completed to date and a proposed outline for continued development completes the report.
Date:
January 1, 1980
Creator:
McDonald, D.W.
System:
The UNT Digital Library
(Accumulation of Methyl-Deficient Rat Liver Messenger Ribonucleic Acid on Ethionine Administration). Progress Report. [Methyltransferase Activity in Ehrlich Ascites Tumor Cells and Effects of Phorbol Ester on Methyltransferase Activity]
Enzyme fractions were isolated from Ehrlich ascites cells which introduced methyl groups into methyl deficient rat liver mRNA and unmethylated vaccinia mRNA. The methyl groups were incorporated at the 5'; end into cap 1 structures by the viral enzyme, whereas both cap 0 and cap 1 structures were formed by the Ehrlich ascites cell enzymes. Preliminary results indicate the presence of adenine N/sup 6/-methyltransferase activity in Ehrlich ascites cells. These results indicate that mRNA deficient in 5';-cap methylation and in internal methylation of adenine accumulated in rats on exposure to ethionine. The methyl-deficient mRNA isolated from the liver of ethionine-fed rats differed in its translational properties from mRNA isolated from control animals. Preliminary experiments indicate that single topical application of 17n moles of TPA to mouse skin altered tRNA methyltransferases. The extent of methylation was increased over 2-fold in mouse skin treated with TPA for 48 hours. These changes have been observed as early as 12 hours following TPA treatment. In contrast, the application of initiating dose of DMBA had no effect on these enzymes. It should be emphasized that the changes in tRNA methyltransferases produced by TPA are not merely an increase of the concentration of the enzyme, rather …
Date:
January 1, 1980
Creator:
Borek, E.
System:
The UNT Digital Library
Actinide partitioning-transmutation program final report. VI. Short-term risk analysis of reprocessing, refabrication, and transportation: appendix
The Chemical Technology Division of the Oak Ridge National Laboratory has prepared a set of documents that evaluate a Partitioning-Transmutation (PT) fuel cycle relative to a Reference cycle employing conventional fuel-material recovery methods. The PT cycle uses enhanced recovery methods so that most of the long-lived actinides are recycled to nuclear power plants and transmuted to shorter-lived materials, thereby reducing the waste toxicity. This report compares the two fuel cycles on the basis of the short-term radiological and nonradiological risks they present to the public and to workers. The accidental radiological risk to the public is analyzed by estimating the probabilities of sets of accidents; the consequences are calculated using the CRAC code appropriately modified for the material composition. Routine radiological risks to the public are estimated from the calculated release amounts; the effects are calculated using the CRAC code. Radiological occupational risks are determined from prior experience, projected standards, and estimates of accident risk. Nonradiological risks are calculated from the number of personnel involved, historical experience, and epidemiological studies. The result of this analysis is that the short-term risk of PT is 2.9 times greater than that of the Reference cycle, primarily due to the larger amount of industry. …
Date:
January 1, 1980
Creator:
Fullwood, R.R. & Jackson, R.
System:
The UNT Digital Library
Activated carbon adsorption from a high TOC wastewater
The ability of activated carbon to reduce total organic carbon in highly concentrated wastewaters from a coal gasification pilot plant was evaluated in laboratory batch and column tests. The wastewater initially contains over 5000 mg/l TOC, largely phenols and cresols, with numerous other organic species in much lower concentrations. The physical adsorption process is best explained by the Freundlich model, with the slope and intercept of the Freundlich isotherm comparable to data reported for treatment of refinery wastes. Carbon exhaustion rates and bed depth-service time curves are also comparable to refinery treatment data obtained from waters of lower TOC or COD. Laboratory-scale column tests reduced TOC from 5740 mg/l to 200 mg/l.
Date:
January 1, 1980
Creator:
Hird, K.B.; Kube, W.R. & Schobert, H.H.
System:
The UNT Digital Library
Active feedback control for stabilization of vibration in rotating machinery (24. 034). Period covered: April 1-June 30, 1980
Some of the considerations involved in the use of feedback control as a means of reducing the unbalanced response of a rotor or of eliminating or alleviating rotor dynamic instability are discussed. A simple model of a mass on a flexible shaft is used to illustrate the application of feedback control concepts. A description is given of a system assembled at the University of Virginia which uses feedback control individually adjustable in the vertical and horizontal directions to support the shaft bearings.
Date:
January 1, 1980
Creator:
unknown
System:
The UNT Digital Library
Add-On Interest, The Rule of 78's, And Annual Percentage Rate
Report on mortgage interest rates and calculation methods including tables showing how the interests rates affect the principal balance.
Date:
1980~
Creator:
Friedman, Jack P.
System:
The Portal to Texas History
Additions and corrections to the bibliography of geologic studies, Columbia Plateau (Columbia River Besalt) and adjacent Areas, in Idaho, 1980
This bibliography is an update to Idaho Bureau of Mines and Geology Open-File Report 78-6, Bibliography of Geological Studies, Columbia Plateau (Columbia River Basalt Group) and adjacent areas in Idaho (also known as Rockwell Hanford Operations' contractor report RHO-BWI-C-44). To keep the original document current, this additions and corrections report was prepared for the Basalt Waste Isolation Project of Rockwell Hanford Operations. This update is supplementary; therefore, references cited in the original document have not been included here. What is included are materials that have become available since the original publication and pertinent literature that had originally been overlooked. Accompany this updated bubliography are index maps that show locations of geologic studies and geochemical petrographic, remanent paleomagnetic, and radiometric age-dated sites within the Columbia River Basalt Group field within Idaho; also identified are archeological sites, test wells, mines, quarries, and other types of excavations. References on the index maps are keyed to the bibliography and cover the Spokane, Pullman, Hamilton, Grangeville, Elk City, Baker, Boise, and Jordan Valley Army Map Service two-degree quadrangles.
Date:
January 1, 1980
Creator:
Strowd, W.
System:
The UNT Digital Library
ADIP ORNL contribution: 12th ADIP quarterly progress report for period October-December 1980. [Nb-1Zr]
The following ADIP tasks are reported on: MFE-5 in-reactor fatigue crack growth in 316 SS in ORR, titanium alloy tensile properties after neutron irradiation in EBR-II, voids in neutron-irradiated Ti alloys, fabrication of ferritic alloys for RB-1 experiment in HFIR, microstructural examination of commercial ferritic alloys irradiated to very high fluence, microstructural examination of HT-9 archive material from the AD-2 test, and swelling of commercial alloys irradiated to a very high fluence. (DLC)
Date:
January 1, 1980
Creator:
Puigh, R.; Duncan, D.; Ermi, A.M.; Gelles, D. & Zimmerchied, M.
System:
The UNT Digital Library
Advanced amorphous materials for photovoltaic conversion. Annual report, October 1, 1978-September 30, 1979
The objectives of this project are twofold: (1) to investigate new amorphous semiconductor (a-SC) materials, in which recombination centers are passivated, using plasma deposition techniques; and (2) to characterize the optoelectronic properties pertaining to both majority-carrier and minority-carrier transport in as-deposited films and in devices. The electronic properties of plasma-deposited a-Si:H alloys were studied as functions of oxygen and nitrogen impurities. Over a wide range of processing conditions, features displayed by the data include: (1) anomalous behavior in photoconductivity versus temperature for films deficient in either, or both, impurities (peaks appear that are associated with thermal-quenching processes and supralinearity); and (2) modification to classic behavior in photoconductivity owing to synergistic effects of oxygen and nitrogen. Correlations with photoluminescence were observed. Within the context of an emerging spectroscopy, optical emission spectroscopy was found to be a useful technique for the detection of emitting reactive species in the plasma. The presence of impurities, such as N/sub 2/ and chlorosilanes, was diagnosed.
Date:
January 1, 1980
Creator:
Griffith, R. W.; Kampas, F. J.; Vanier, P. E. & Hirsch, M. D.
System:
The UNT Digital Library
Advanced amorphous materials for photovoltaic conversion. Semiannual report, October 1, 1979-March 31, 1980
The primary objectives of this project are twofold: (i) to investigate new amorphous semiconductor (a-Sc) materials, in which recombination centers are passivated, using plasma deposition techniques; and (ii) to characterize the optoelectronic properties pertaining to both majority-carrier and minority-carrier transport in as-deposited films and in devices. The specific goals in FY 1980 are: (i) to continue investigations of the effects of atmospheric impurities, i.e., nitrogen and oxygen, on the optoelectronic properties of a-Si:H alloys; and (ii) to initiate a study of the effects of these impurities upon the photovoltaic conversion efficiencies of diagnostic devices that are fabricated using such alloys. The following activities were emphasized in the program: (i) an expansion of plasma studies using optical emission spectroscopy in order to identify emitting reactive species due to impurities; and (ii) electrical and optical measurements on alloys with calibrated impurity levels by measurments of photoconductivity, photoluminescence, vibrational spectroscopy, etc.; and (iii) completing the apparatus for device measurements of spectral response, dark I-V characteristics, illuminated I-V characteristics, etc. Associated with the last activity, the fabrication of solar cells was begun using low-impurity a-Si:H materials and various a-Si:(H,O,N) alloys. Progress is reported. (WHK)
Date:
January 1, 1980
Creator:
Griffith, R. W.; Delahoy, A. E.; Hirsch, M. D.; Kampas, F. J. & Vanier, P. E.
System:
The UNT Digital Library
Advanced converter technology. Technical progress report, May 23, 1979-May 22, 1980
The overall objective of this program is to define an advanced converter system employing 1980's technology in all subsystem and component areas for use in electrochemical energy storage systems. Additional experimental effort will validate elements of the advanced commutation circuitry on a full-scale breadboard basis. Improved models of battery electrical characteristics are being defined and experimental apparatus is being designed to measure these characteristics and to enable better definition of the battery-power conditioner interface. Improvement of energy-storage system performance through modification of battery converter characteristics will also be investigated. During this first year of the contract, a new more advanced concept for power conditioning based on a concept defined by United Technologies Corporation for fuel cell use was evaluated. This high switching frequency concept has the potential for significantly reducing the size and cost of battery plant power conditioners. As a result, the Department of Energy authorized redirection of the program to first evaluate this new concept and then to reorient the program to adopt this concept as the primary one. Progress is reported. (WHK)
Date:
January 1, 1980
Creator:
Banic, C. V.; Eckhouse, S. A.; Kornbrust, F. J.; Lipman, K.; Peterson, J. L. & Rosati, R. W.
System:
The UNT Digital Library
Advanced electrode design for electrostatic precipitators
The subject of this paper is a wavy electrode precipitator which employs a new collecting electrode. The wavy electrode precipitator incorporates a contoured collecting electrode geometry which produces a nearly uniform electric field along the electrode. This feature allows operation with higher average electric field strengths near the electrode than in conventional designs. The wavy electrode provides separated flow zones within its valleys, which fluid dynamically shield particles from the main stream. The design also provides mechanical rigidity to vertical bending without the sharp flanges normal to the flow commonly found in conventional precipitators. These features permit increased performance for all particle sizes, but especially help in the precipitation of fine particles which are normally the most difficult to collect.
Date:
January 1, 1980
Creator:
Bernstein, S.; Ushimaru, K. & Geller, E.W.
System:
The UNT Digital Library
Advanced photovoltaic concentrator cells. Quarterly technical progress report No. 2, 1 December 1979-29 February 1980
This report describes second quarter activities for a project aimed at demonstrating the technical feasibility of advanced high efficiency concentrator solar converters. The goal of the program is to achieve 30% conversion efficiency with a converter operating at 30/sup 0/C under 500 to 1000 SUN AM2 illumination and 25% conversion efficiency with a converter operating at 150/sup 0/C under 500 to 1000 SUN AM2 illumination. The approach is to fabricate two cell, non-lattice matched, monolithic stacked converters using optimum pairs of cells having bandgaps in the range of 1.6 to 1.7 eV and 0.95 to 1.1 eV. The high bandgap cells are to be fabricated using MOCVD or LPE to produce the needed AlGaAs layers of optimized composition, thickness and doping to produce high performance, heteroface homojunction devices. The low bandgap cells are to be similarly fabricated from AlGaSb(As) compositions by LPE. These subcells are then to be joined into a monolithic structure by an appropriate thermal bonding technique which will also form the needed transparent intercell ohmic contact (IOC) between the two subcells. The activities this quarter have been largely focused on the development and study of low bandgap cell structures and attempts to develop suitable techniques for the …
Date:
January 1, 1980
Creator:
Zehr, S. W.; Yang, H. T.; Yang, J. J. & Harris, J. S. Jr.
System:
The UNT Digital Library
Advanced Reactor Safety Research Division. Quarterly progress report, April 1-June 30, 1980
The Advanced Reactor Safety Research Programs Quarterly Progress Report describes current activities and technical progress in the programs at Brookhaven National Laboratory sponsored by the USNRC Division of Reactor Safety Research. The projects reported each quarter are the following: HTGR safety evaluation, SSC Code Development, LMFBR Safety Experiments, and Fast Reactor Safety Code Validation.
Date:
January 1, 1980
Creator:
Romano, A.J.
System:
The UNT Digital Library
Advanced theoretical methods for improving the performance of thermionic converters. Final report, February 13, 1979-August 12, 1980
Separate abstracts were prepared for the 17 papers included. (WHK)
Date:
January 1, 1980
Creator:
unknown
System:
The UNT Digital Library