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Anisotropic yielding of rocks at high temperatures and pressures; Annual Progress Report, 1988-1989 (open access)

Anisotropic yielding of rocks at high temperatures and pressures; Annual Progress Report, 1988-1989

The experimental results we have obtained on Four-Mile gneiss have demonstrated that the yield behavior of quartzo-feldspathic rocks containing only a small percentage (10%) of mica can be markedly anisotropic, provided the mica minerals exhibit a strong crystallographic preferred orientation. Samples of gneiss oriented such that resolved shear stresses on the foliation plane are large are considerably weaker than granites of similar grain size and composition, and this weakness is attributed to enhanced nucleation of microcracks in quartz and feldspar adjacent to mica grains that are suitably oriented for slip. We expect the yield behavior of rocks containing a higher proportion of phyllosilicates to be influenced by the strongly anisotropic nature of these minerals as well, although the strengths, temperature and pressure dependencies, and flow-controlling mechanisms in such rocks may be significantly different.
Date: November 30, 1989
Creator: Kronenberg, A. K.; Russell, J. E. & Carter, N. L.
System: The UNT Digital Library
Coal as an option for power generation in US territories of the Pacific (open access)

Coal as an option for power generation in US territories of the Pacific

A survey of general considerations relating to the use of coal in US territories and trust territories of the Pacific suggests that coal is a viable option for power generation. Future coal supplies, principally from Australia and the west coast of America, promise to be more than adequate, but large bulk carriers will probably not be able to land coal directly because of inadequate port facilities. Hence, smaller than Panamax-class vessels (60,000 dwt) or some arrangement utilizing self-loading barges or lighters would have to be used. Except for Guam, with peak power requirements on the order of 175 MW/sub e/, most territories have current, albeit inadequate, installations of 1 to 25 MW/sub e/ Turnkey, conventional-coal-fired, electrical-power generating systems are available in that size range. US environmental laws are now applicable to Guam and American Samoa; the trust territories are exempt. However, the small power requirements of many small islands will qualify for exemption from the New Source Performance Standards called for in the Clean Air Act. The principal problems with coal use in the territories, apart from the shallow draft of most harbors, are the limited amount of land available and the high capital costs associated with conversion. Ocean dumping …
Date: November 30, 1981
Creator: Borg, I. Y.
System: The UNT Digital Library
TMI Unit-2 Technical Information and Examination Program Update (open access)

TMI Unit-2 Technical Information and Examination Program Update

Information is presented concerning a submerged demineralizer system for contaminated water; multilevel sampling; inspection of solar crane; entry on containment building; and shipment of EPICOR 2 resin canister.
Date: November 30, 1981
Creator: unknown
System: The UNT Digital Library
Medium-energy nuclear physics research. Final technical progress report, May 1, 1971-November 30, 1981 (open access)

Medium-energy nuclear physics research. Final technical progress report, May 1, 1971-November 30, 1981

Final results are summarized for this program with the primary emphasis on measurement of ten independent parameters for proton-proton elastic scattering at 800 MeV and four independent such parameters at 650 MeV. Inelastic proton-proton reactions have also been measured at 800 MeV. Proton-deuteron elastic scattering cross sections and polarization analyzing powers have been obtained at 800 MeV. Proton-nucleus total and total reaction cross sections were measured at 700 MeV for a number of nuclei. Major instrumentation was designed and constructed to carry out this program.
Date: November 30, 1981
Creator: Willard, H.B.
System: The UNT Digital Library
Flux of energy and essential elements through the continental shelf ecosystem. Progress report (open access)

Flux of energy and essential elements through the continental shelf ecosystem. Progress report

There are three distinct but not mutually exclusive areas of research in this contract, studies of intrusions of the west wall of the Gulf Stream onto the outer continental shelf, studies of the flux of materials across nearshore density fronts, and advances in understanding of the planktonic food web of the continental shelf. Studies of frontal events on the outer and inner continental shelf involve distinctive physical and chemical regimes and have proven to require distinctive biological approaches. The studies of the food web run through our work on both of the frontal regimes, but certain aspects have become subjects in their own right. We have developed a simulation model of the flux of energy through the continental shelf food web which we believe to be more realistic than previous ones of its type. We have examined several of the many roles of dissolved organic compounds in sea water which originate either from release by phytoplankton, digestive processes or metabolites of zooplankton, or extracellular digestion of microorganisms. Methods have been developed under this contract to measure both the chelating capacity of naturally occurring organic materials and the copper concentration in the water. It has been possible to characterize the effects, …
Date: November 30, 1981
Creator: Pomeroy, L.R.
System: The UNT Digital Library
Some continuously variable partial snakes of Type 1 and Type 2 (open access)

Some continuously variable partial snakes of Type 1 and Type 2

In order to obtain polarized beam in proton accelerators, Siberian snakes of two types may be needed in order to establish a spin tune independent of energy. We have done a numerical study to find a type II partial snake and to find more exact solutions for the type I partial snakes previously proposed. We find a type II partial snake. We find that the unequal field integrals needed to modify approximate type I snakes to exactly type I snakes with horizontal and vertical bends result in unacceptably large orbit excursions. We find a new type I snake with smaller field integrals at small overall rotation. An 8 magnet type II snake works from 0 to {pi} but more magnets might be used to reduce the excursion at small angle. Also, no type I partial snake with as few as 8 magnets has been found which will work continuously from 0 to {pi}. It appears that horizontal and vertical bends cannot provide solutions for pure type I or type II that allow the field integrals to approach zero as the rotation goes to zero. Versions of both the new type I and type II partial snakes are presently used as …
Date: November 30, 1988
Creator: Underwood, D.G.
System: The UNT Digital Library
Thermionic Technology Program: A, Insulator test and evaluation: Final report (open access)

Thermionic Technology Program: A, Insulator test and evaluation: Final report

The Thermionic Technology Program (TTP) consisted of two major efforts, evaluation of insulators and evaluation of thermionic converters. This report details the work performed on the insulator phase of the program. Efforts were made to better understand the mechanisms involved in the electrochemistry of insulators at elevated temperatures by modelling the ionic transport through the various layers of the insulator package. Although rigorous analytic solutions could not be obtained owing to a lack of detailed data, a simplified model indicated that alumina should not fail by depletion of aluminum for thousands of years, whereas calculations for yttria revealed a far more rapid depletion of oxygen and consequently earlier failure. Methods for microscopic and electrical testing of cylindrical insulator samples were developed, and an improved test oven design was initiated. Testing of alumina/niobium cermet samples revealed rapid failure contrary to the theoretical predictions for alumina. Large discrepancies in the initial conduction activation energy among the various samples suggested that different mechanisms could have controlled the conduction and hence the failure in different samples, although all had undergone nominally identical processing. The short lifetimes reveal how rapidly ambient conditions in thermionic power conversion can degrade the performance of insulating oxides. It was …
Date: November 30, 1987
Creator: Dobson, J.C. & Witt, T.
System: The UNT Digital Library
Appliance energy efficiency in new home construction. Final report (open access)

Appliance energy efficiency in new home construction. Final report

A survey of 224 builders was conducted to which 160 builders responded. Each respondent completed between one and seven separate questionnaires. Each of the seven questionnaires were designed to collect information about one type of equipment or major appliance. These are: heat pump; heating system; air conditioner; domestic water heater; dishwasher; range; and refrigerator. Analysis of the resulting 406 questionnaires indicated that builders were primarily responsible for brand selection. These choices were made primarily without regard for the energy efficiency of the product. A similar apparent lack of consideration of energy efficiency during brand and model selection was found among home buyers and specialized subcontractors.
Date: November 30, 1980
Creator: unknown
System: The UNT Digital Library
Electric utility system planning studies for OTEC power integration. Final report (open access)

Electric utility system planning studies for OTEC power integration. Final report

Florida Power Corporation (FPC) conducted an evaluation of the possible integration of OTEC into the FPC system. Existing system planning procedures, assumptions, and corporate financial criteria for planning new generating capacity were used without modification. A baseline configuration for an OTEC plant was developed for review with standard planning procedures. The OTEC plant characteristics and costs were incorporated in considerable detail. These basic inputs were examined using the FPC system planning methods. It was found that with the initial set of conditions, OTEC would not be economically viable. Using the same system planning procedures, a number of adjustments were made to the key study assumptions. It was found that two considerations dominate the analysis; the assumed rate of fuel cost escalation, and the projected capital cost of the OTEC plant. The analysis produced a parametric curve: on one hand, if fuel costs were to escalate at a rate greater than assumed (12% vs the assumed 5% for coal), and if no change were made to the OTEC input assumptions, the basic economic competitive criteria would be equivalent to the principal alternative, coal fueled plants. Conversely, if the projected cost of the OTEC plant were to be reduced from the assumed …
Date: November 30, 1980
Creator: unknown
System: The UNT Digital Library
Light-Weight Radioisotope Heater Unit Final Safety Analysis Report (LWRHU FSAR): Volume 3, Nuclear Risk Analysis Document (open access)

Light-Weight Radioisotope Heater Unit Final Safety Analysis Report (LWRHU FSAR): Volume 3, Nuclear Risk Analysis Document

The Light-Weight Radioisotope Heater Unit (LWRHU) Final Safety Analysis Report (FSAR), Volume 2, Accident Model Document (AMD) describes potential accident scenarios during the Galileo mission and evaluates the response of the LWRHUs to the associated accident environments. Any resulting source terms, consisting of PuO2 (with Pu-238 the dominant radionuclide), are then described in terms of curies released, particle size distribution, release location, and probabilities. This volume (LWRHU-FSAR, Volume 3, Nuclear Risk Analysis Document (NRAD)) contains the radiological analyses which estimate the consequences of the accident scenarios described in the AMD. It also contains the quantification of mission risks resulting from the LWRHUs based on consideration of all accident scenarios and their probabilities. Estimates of source terms and their characteristics derived in the AMD are used as inputs to the analyses in the NRAD. The Failure Abort Sequence Trees (FASTs) presented in the AMD define events for which source terms occur and quantify them. Based on this information, three types of source term cases (most probable, maximum, and expectation) for each mission phase were developed for use in evaluating the radiological consequences and mission risks. 4 refs., 5 figs., 8 tabs.
Date: November 30, 1988
Creator: unknown
System: The UNT Digital Library
Cost estimate for muddy water palladium production facility at Mound (open access)

Cost estimate for muddy water palladium production facility at Mound

An economic feasibility study was performed on the ''Muddy Water'' low-chlorine content palladium powder production process developed by Mound. The total capital investment and total operating costs (dollars per gram) were determined for production batch sizes of 1--10 kg in 1-kg increments. The report includes a brief description of the Muddy Water process, the process flow diagram, and material balances for the various production batch sizes. Two types of facilities were evaluated--one for production of new, ''virgin'' palladium powder, and one for recycling existing material. The total capital investment for virgin facilities ranged from $600,000 --$1.3 million for production batch sizes of 1--10 kg, respectively. The range for recycle facilities was $1--$2.3 million. The total operating cost for 100% acceptable powder production in the virgin facilities ranged from $23 per gram for a 1-kg production batch size to $8 per gram for a 10-kg batch size. Similarly for recycle facilities, the total operating cost ranged from $34 per gram to $5 per gram. The total operating cost versus product acceptability (ranging from 50%--100% acceptability) was also evaluated for both virgin and recycle facilities. Because production sizes studied vary widely and because scale-up factors are unknown for batch sizes greater than …
Date: November 30, 1988
Creator: McAdams, R.K.
System: The UNT Digital Library
Shape algorithm for a RFQ vane (open access)

Shape algorithm for a RFQ vane

The Radio Frequency Quadrupole Linear Accelerator (RFQ) proposed by Kapchinskii and Teplyakov, has become an accepted structure in the accelerator community. The first working model was developed at Los Alamos for the 440 MHz cavity, and since then 200 MHz models have appeared at BNL, CERN, LBL, and KEK. The RFQ is very useful bunching low-energy ion beams and accelerating them to sufficient energies for injection into a linear accelerator. A Fermilab model of the RFQ would be a 200 MHz structure capable of accelerating H/sup -/ ions from 30 keV to 750 keV in 1.36 meters. The ion current fo 50 mA would be pulsed at 15 Hz. The RFQ vane-tip parameters, m(z) and a(z) are determined along the vanes according to an algorithm developed by K. Crandall et. al. Results of this calculation are stored on paper tape and input into numerically controlled milling for vane cutting. We have used the algorithm to calculate a vane shape for the 200 MHz RFQ and have plotted the results using the Device Independent Graphics System.
Date: November 30, 1983
Creator: Juarez, B. & Treadwell, E.
System: The UNT Digital Library
Rawlins UCG Demonstration Project. Final technical progress report, May 10, 1988--August 9, 1988 (open access)

Rawlins UCG Demonstration Project. Final technical progress report, May 10, 1988--August 9, 1988

The US Department of Energy and Energy International, Inc. have entered into a Cooperative Agreement to conduct a cost-shared field test demonstrating the operation of commercial-scale steeply dipping bed underground coal gasification (UCG) modules to provide the synthesis gas for a small-scale commercial ammonia plant. The field test and the commercial ammonia plant will be located near Rawlins, Wyoming. During this demonstration test, two or more modules will be operated simultaneously until one module is completely consumed and an additional module is brought on line. During this period, the average coal gasification rate will be between 500 and 1,200 tons per day. A portion of the raw UCC product gas. The UCG facility will continue to operate subsequent. to the demonstration to provide feedstock for the commercial plant. Energy International is responsible for accomplishing specific objectives in accordance with the Statement of Work by designing, installing, operating and monitoring the performance of the UCG modules as the feedstock source for the small-scale commercial ammonia plant. During this period, the project activities focused on project structuring, financing, and project management activities. Because the negotiations with investors were not completed on the schedule anticipated, adjustment of the schedule and activities was necessary. …
Date: November 30, 1988
Creator: unknown
System: The UNT Digital Library
The North Texas Regional Institute For Educators On The Visual Arts, A Proposal to: Effie and Wofford Cain Foundation (open access)

The North Texas Regional Institute For Educators On The Visual Arts, A Proposal to: Effie and Wofford Cain Foundation

A proposal to the Effie and Wofford Cain Foundation by the University of North Texas in collaboration with DFW public schools, DFW museums, and regional and state art councils, inviting Effie and Wofford Foundation to participate in the establishment of the North Texas Regional Institute for Educators on the Visual Arts through a three-year grant. The grant will be devoted to leadership training, staff development, and the implementation of a discipline-based visual arts program at the elementary school level. Included in the proposal is a broken down budget about the division of money through NTIEVA's consortia. The authors believe that the arts are an important component of a well-balanced educational program after studying educational reform.
Date: November 30, 1989
Creator: University of North Texas
System: The UNT Digital Library
Foreign Coal Liquefaction Technology Survey and Assessment SASOL - the Commercial Experience (open access)

Foreign Coal Liquefaction Technology Survey and Assessment SASOL - the Commercial Experience

None
Date: November 30, 1980
Creator: Pay, T. D.
System: The UNT Digital Library
The Substitution of Coal for Oil and Natural Gas in the Industrial Sector (open access)

The Substitution of Coal for Oil and Natural Gas in the Industrial Sector

None
Date: November 30, 1980
Creator: Cohen, B. N.
System: The UNT Digital Library
Health and Environmental Effects Document on Geothermal Energy -- 1982 update (open access)

Health and Environmental Effects Document on Geothermal Energy -- 1982 update

We assess several of the important health and environmental risks associated with a reference geothermal industry that produces 21,000 MWe for 30 y (equivalent to 20 x 10{sup 18} J). The analyses of health effects focus on the risks associated with exposure to hydrogen sulfide, particulate sulfate, benzene, mercury, and radon in air and arsenic in food. Results indicate that emissions of hydrogen sulfide are likely to cause odor-related problems in 29 of 51 geothermal resources areas, assuming that no pollution controls are employed. Our best estimates and ranges of uncertainty for the health risks of chronic population exposures to atmospheric pollutants are as follows (risks expressed per 10{sup 18} J of electricity): particulate sulfate, 44 premature deaths (uncertainty range of 0 to 360); benzene, 0.15 leukemias (range of 0 to 0.51); elemental mercury, 14 muscle tremors (range of 0 to 39); and radon, 0.68 lung cancers (range of 0 to 1.8). The ultimate risk of fatal skin cancers as the result of the transfer of waste arsenic to the general population over geologic time ({approx} 100,000 y) was calculated as 41 per 10{sup 18} J. We based our estimates of occupational health effects on rates of accidental deaths together …
Date: November 30, 1983
Creator: Layton, David W.; Daniels, Jeffrey I.; Anspaugh, Lynn R. & O'Banion, Kerry D.
System: The UNT Digital Library
Hydrothermal interaction of Topopah Spring tuff with J-13 water as a function of temperature (open access)

Hydrothermal interaction of Topopah Spring tuff with J-13 water as a function of temperature

In support of the Nevada Nuclear Waste Storage Investigations Project experiments were conducted to study the hydrothermal interaction of rock and water representative of a potential repository in tuff. These experiments provided data relevant to near-field repository conditions that can be used to: assess the ability to use accelerated tests based on the SA/V (surface area/volume) parameter and temperature; allow the measurement of chemical changes in phases present in the tuff before reaction as well as the identification and chemical analysis of secondary phases resulting from hydrothermal reactions; and demonstrate the usefulness of geochemical modeling in a repository environment using the EQ3/6 thermodynamic/kinetic geochemical modeling code. Crushed tuff and polished wafers of tuff were reacted with a natural ground water in Dickson-type gold-cell rocking autoclaves which were periodically sampled under in-situ conditions. Results were compared with predictions based on the EQ3/6 geochemical modeling code. Eight short-term experiments (2 to 3 months) at 150{sup 0}C and 250{sup 0}C have been completed using tuff from both drillcore and outcrop. Long-term experiments at 90{sup 0}C and 150{sup 0}C using drillcore polished wafers are in progress. This paper will focus on the results of the 150{sup 0}C and 250{sup 0}C experiments using drill core …
Date: November 30, 1984
Creator: Knauss, K. G.; Delany, J. M.; Beiriger, W. J. & Peifer, D. W.
System: The UNT Digital Library
Instrumentation Report No. 2: identification, evaluation, and remedial actions related to transducer failures at the spent fuel test-climax (open access)

Instrumentation Report No. 2: identification, evaluation, and remedial actions related to transducer failures at the spent fuel test-climax

The Spent Fuel Test-Climax (SFT-C) is a test of the feasibility of safe and reliable short-term storage and retrieval of spent fuel from commercial nuclear reactors. In support of operational and technical goals of the test, about 850 channels of instrumentation have been installed at the SFT-C. Failure of several near-field instruments began less than six months after emplacement of 11 canisters of spent fuel and activation of six thermally similar simulators. The failed units were linear potentiometers (used to make displacement measurements) and vibrating wire stressmeters (used to make change-in-stress measurements). This report discusses the observed problems and remedial actions taken to date.
Date: November 30, 1981
Creator: Patrick, W. C.; Carlson, R. C. & Rector, N. L.
System: The UNT Digital Library
San Antonio Monthly Reports: November 1980 (open access)

San Antonio Monthly Reports: November 1980

Compilation of monthly reports from departments in the city of San Antonio, Texas providing statistics, project updates, and other information about services and activities.
Date: November 30, 1980
Creator: San Antonio (Tex.)
System: The Portal to Texas History
Geothermal district-heating potential for casinos/hotels in Reno, Nevada (open access)

Geothermal district-heating potential for casinos/hotels in Reno, Nevada

Results from the pre-feasibility study of a geothermal district heating system for greater Reno and the pre-feasibility study of providing geothermal heat to casinos/hotels located in downtown Reno by connection to the proposed district heating system (DHS) are combined. Geothermal sources were selected from published data. Potential users were selected from aerial and city planning maps, and published building and demographic information. Energy consumption data from the electric and gas utility was matched with consumption information from surveys of representative buildings by category and climatic data. As an example, a written survey was mailed to the casino/hotels and two on-site visits were made. Retrofit methodology and cost were examined for the casino/hotels and representative buildings. Based on the pre-feasibility studies, a geothermal district heating system for Reno appears technically and economically feasible. Furthermore, additional economic savings are achieved when the Reno casinos/hotels are connected to the DHS. Steamboat Hot Springs and a geothermal area east of downtown are the most promising geothermal sources for the DHS. The City of Reno has a large yearly heat load with an average heating degree days per year of 6022/sup 0/F days and a heating season greater than eight months.
Date: November 30, 1981
Creator: unknown
System: The UNT Digital Library
Health and Human Services Coordinating Council Annual Report:1988 (open access)

Health and Human Services Coordinating Council Annual Report:1988

Annual report of the Health and Human Services Coordinating Council describing goals, activities, and accomplishments during fiscal year 1988.
Date: November 30, 1988
Creator: Human and Health Services Coordinating Council
System: The Portal to Texas History