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736
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385
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162
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85
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62
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35
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DOD Animal Research: Improvements Needed in Quality of Biomedical Research Database
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO examined several issues related to the Department of Defense's (DOD) administration of its animal research programs, focusing on: (1) the extent to which DOD's research using animals addresses validated military objectives, does not unnecessarily duplicate work done elsewhere, and incorporates methods to reduce, replace, and refine the use of animals; and (2) problems with the accuracy of information in the Biomedical Research Database (BRD)."
Date:
December 14, 1998
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Airport Improvement Program: FAA Complying With Requirement for Local Involvement in Noise Mitigation Projects
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO determined whether the Federal Aviation Administration (FAA) must enforce grant assurance as a condition of providing noise mitigation grants to the Seattle-Tacoma International Airport."
Date:
December 28, 1998
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Defense Trade: Status of the Defense Export Loan Guarantee Program
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Department of Defense's (DOD) Defense Export Loan Guarantee (DELG) Program, focusing on: (1) the level of program activity to date; (2) the program's financial status; (3) other sources of financing available to borrowing countries; (4) comparing DELG Program characteristics with other U.S. government export financing programs; and (5) examining issues related to the planned fiscal year 1999 transfer of DELG Program responsibilities within DOD."
Date:
December 21, 1998
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
U.S. Department of Agriculture: Administrative Streamlining Is Expected to Continue Through 2002
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the Department of Agriculture's (USDA) progress in streamlining its administrative operations, focusing on USDA's efforts to: (1) reduce the number of administrative staff departmentwide; (2) consolidate and streamline administrative support structures for seven field-based agencies, particularly at the state office level; and (3) measure the savings and efficiencies realized as a result of its departmentwide reorganization and streamlining efforts."
Date:
December 11, 1998
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Specialty Care: Heart Attack Survivors Treated by Cardiologists More Likely to Take Recommended Drugs
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the potential differences in treatment patterns for health maintenance organizations (HMO) patients treated by specialists and those treated by generalist physicians, focusing on: (1) the proportion of Medicare heart attack survivors enrolled in HMOs who take cholesterol-lowering drugs, beta-blockers, and aspirin; and (2) whether Medicare heart attack survivors in HMOs regularly treated by a cardiologist are more likely to take cholesterol-lowering drugs, beta-blockers, and aspirin than those who do not have regular cardiology appointments."
Date:
December 4, 1998
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
IRS Systems Security: Although Significant Improvements Made, Tax Processing Operations and Data Still at Serious Risk
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Internal Revenue Service's (IRS) progress in correcting serious computer security weaknesses at five IRS facilities, focusing on: (1) additional security weaknesses identified at the five facilities and at an IRS facility not included in GAO's previous report; and (2) steps IRS has taken or plans to take to implement a service-wide computer security management program."
Date:
December 14, 1998
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Defense Trade: U.S. Contractors Employ Diverse Activities To Meet Offset Obligations
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the types of activities undertaken by U.S. contractors to meet offset obligations associated with the sale of defense equipment to various foreign governments."
Date:
December 18, 1998
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Food Stamp Program: Information on Employment and Training Activities
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on: (1) the number of able-bodied adults without dependents who are receiving food stamp benefits, the number who are required to meet the work requirements, and the number who are exempted from the requirements; (2) the number of able-bodied adults without dependents participating in qualifying employment and training or Workfare programs; and (3) the amounts of federal grant funds that states spent through the first three quarters of fiscal year 1998 for employment and training or workfare programs for food stamp recipients."
Date:
December 14, 1998
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Cooperative Research and Development Agreements
A Cooperative Research and Development Agreement (CRADA) is a mechanism established by P.L. 99-602, the Federal Technology Transfer Act, to allow the transfer of technology, knowledge, and expertise from government laboratories to the private sector for further development and commercialization. The government provides support in the way of overhead for research and development performed in the federal laboratory and is prohibited from providing funding directly to the partner in the collaborative effort. Currently, more than 5,000 CRADAs have been signed. As the 105th Congress determines its approach to science and technology policies, the role of CRADAs continues to be debated within the context of federal support for R&D
Date:
November 17, 1998
Creator:
Schacht, Wendy H.
Object Type:
Report
System:
The UNT Digital Library
The Au Pair Program
Legislation passed late in the 103rd Congress granted the U.S. Information Agency (USIA) authority to design and implement more rigorous rules regulating the au pair program. In 1997, the au pair program received considerable media attention as a result of the Louise Woodward court case regarding possible involvement of an au pair in the death of a child in Massachusetts. The U.S. Information Agency amended existing federal regulations for the au pair program in September 1997 to underscore the cultural exchange aspect of the program and strengthen au pair recruiting and training.
Date:
January 30, 1998
Creator:
Epstein, Susan B.
Object Type:
Report
System:
The UNT Digital Library
R&D Partnerships: Government-Industry Collaboration
Efforts by the 104th Congress to eliminate several government-industry-university research and development partnership programs reflected some opposition to federally funded programs designed to facilitate the commercialization of technology. Within the context of the budget decisions, the 106th Congress is expected to again debate the government's role in promoting collaborative ventures focused on generating new products and processes for the marketplace.
Date:
November 17, 1998
Creator:
Schacht, Wendy H.
Object Type:
Report
System:
The UNT Digital Library
The "Son of Sam" Case: Legislative Implications
In Simon & Schuster, Inc. v. Members of the new York State Crime Victims Board, the U.S. Supreme Court held that New York State's "Son of Sam" law was inconsistent with the First Amendment's guarantee of freedom of speech and press. This report examines the Supreme Court decision and then considers whether its rationale renders the federal law unconstitutional. Concluding that it likely does, the report considers whether it would be possible to enact a constitutional Son-of-Sam statute. Finally, the report takes note of some state Son-of-Sam statutes that have been enacted since the Supreme Court decision.
Date:
November 30, 1998
Creator:
Cohen, Henry
Object Type:
Report
System:
The UNT Digital Library
Investigations into the Early Life History of Naturally Spring Chinook Salmon in the Grande Ronde River Basin : Fish Research Project Oregon : Annual Progress Report Project Period 1 September 1997 to 31 August 1998.
We determined migration timing and abundance of juvenile spring chinook salmon from three populations in the Grande Ronde River basin. We estimated 6,716 juvenile chinook salmon left upper rearing areas of the Grande Ronde River from July 1997 to June 1998; approximately 6% of the migrants left in summer, 29% in fall, 2% in winter, and 63% in spring. We estimated 8,763 juvenile chinook salmon left upper rearing areas of Catherine Creek from July 1997 to June 1998; approximately 12% of the migrants left in summer, 37% in fall, 21% in winter, and 29% in spring. We estimated 8,859 juvenile chinook salmon left the Grande Ronde Valley, located below the upper rearing areas in Catherine Creek and the Grande Ronde River, from October 1997 to June 1998; approximately 99% of the migrants left in spring. We estimated 15,738 juvenile chinook salmon left upper rearing areas of the Lostine River from July 1997 to April 1998; approximately 3% of the migrants left in summer, 61% in fall, 2% in winter, and 34% in spring. We estimated 22,754 juvenile spring chinook salmon left the Wallowa Valley, located below the mouth of the Lostine River, from September 1997 to April 1998; approximately 55% …
Date:
January 1, 1998
Creator:
Keefe, MaryLouise & Tranquilli, J. Vincent
Object Type:
Report
System:
The UNT Digital Library
Closure Report for Corrective Action Unit 404: Roller Coaster Sewage Lagoons and North Disposal Trench, Tonopah Test Range, Nevada with ROTC 1, Revision 0
This Closure Report provides the documentation for closure of the Roller Coaster Sewage Lagoons and North Disposal Trench Comective Action Unit (CAU) 404. CAU 404 consists of the Roller Coaster Sewage Lagoons (Corrective Action Site [CAS] TA-03-O01-TA-RC) and the North Disposal Trench (CAS TA-21-001-TA-RC). The site is located on the Tonopah Test Range, approximately 225 kilometers (km) (140 miles [mi]) northwest ofLas Vegas, Nevada. . The sewage lagoons received ~quid sanitary waste horn the Operation Roller Coaster Man Camp in 1963 and debris from subsequent range and construction cleanup activities. The debris and ordnance was subsequently removed and properly dispos~, however, pesticides were detected in soil samples born the bottom of the lagoons above the U,S. Environmental Protection Agency Region IX Prelimimuy Remediation Goals (EPA 1996). . The North Disposal Trench was excavated in 1963. Debris from the man camp and subsequent range and construction cleanup activities was placed in the trench. Investigation results indicated that no constituents of concern were detected in soil samples collected from the trench. Remedial alternative proposed in the Comctive Action Decision Document (CADD) fm the site was “Covering” (DOE, 1997a). The Nevada Division of”Enviromnental Protection (NDEP)-approved Correction Action Plan (CAP) proposed the “Covering” niethodology …
Date:
September 1, 1998
Creator:
Kidman, Lynn
Object Type:
Report
System:
The UNT Digital Library
Atmospheric Photochemistry Studies of Pollutant Emissions from Transportation Vehicles Operating on Alternative Fuels
This project was undertaken with the goal of improving our ability to predict the changes in urban ozone resulting from the widespread use of alternative fuels in automobiles. This report presents the results in detail.
Date:
July 1, 1998
Creator:
Jeffries, H.; Sexton, K. & Yu, J.
Object Type:
Report
System:
The UNT Digital Library
Updated 3-D mountain scale flow model with thermal effects,Milestone Level 4: SP4CKMM4
None
Date:
September 30, 1998
Creator:
Haukwa, C. & Bodvarsson, G.S.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of near field rock treatment during constructions (LADSfeature #22)
The purpose of this report is to evaluate the effect of near-field rock treatment by injection of reactive material (calcite) above the drift for the purpose of decreasing postclosure drift seepage. The method used for the calculation was a coupled reaction-transport numerical model for gas-water-rock interaction. This includes the mass conservation of heat, liquid and gas for thermohydrological calculations, of aqueous and gaseous species for advective and diffusive transport, and the kinetics of mineral-water reactions.
Date:
November 24, 1998
Creator:
Sonnenthal, Eric & Spycher, Nicolas
Object Type:
Report
System:
The UNT Digital Library
Coupled modeling of non-isothermal multiphase flow, solutetransport and reactive chemistry in porous and fractured media: 1. ModelDevelopment and Validation
Coupled modeling of subsurface multiphase fluid and heat flow, solute transport and chemical reactions can be used for the assessment of acid mine drainage remediation, mineral deposition, waste disposal sites, hydrothermal convection, contaminant transport, and groundwater quality. Here they present a numerical simulation model, TOUGHREACT, which considers non-isothermal multi-component chemical transport in both liquid and gas phases. A wide range of subsurface thermo-physical-chemical processes is considered. The model can be applied to one-, two- or three-dimensional porous and fractured media with physical and chemical heterogeneity. The model can accommodate any number of chemical species present in liquid, gas and solid phases. A variety of equilibrium chemical reactions is considered, such as aqueous complexation, gas dissolution/exsolution, cation exchange, and surface complexation. Mineral dissolution/precipitation can proceed either subject to local equilibrium or kinetic conditions. The coupled model employs a sequential iteration approach with reasonable computing efficiency. The development of the governing equations and numerical approach is presented along with the discussion of the model implementation and capabilities. The model is verified for a wide range of subsurface physical and chemical processes. The model is well suited for flow and reactive transport in variably saturated porous and fractured media. In the second of …
Date:
September 1, 1998
Creator:
Xu, Tianfu & Pruess, Karsten
Object Type:
Report
System:
The UNT Digital Library
Method of making multilayered titanium ceramic composites
A method making a titanium ceramic composite involves forming a hot pressed powder body having a microstructure comprising at least one titanium metal or alloy layer and at least one ceramic particulate reinforced titanium metal or alloy layer and hot forging the hot pressed body follwed by hot rolling to substantially reduce a thickness dimension and substantially increase a lateral dimension thereof to form a composite plate or sheet that retains in the microstructure at least one titanium based layer and at least one ceramic reinforced titanium based layer in the thickness direction of the composite plate or sheet.
Date:
August 25, 1998
Creator:
Fisher, George T., II; Hansen; Jeffrey, S.; Oden; Laurance, L.; Turner et al.
Object Type:
Patent
System:
The UNT Digital Library
Numerical analysis of thermal-hydrological conditions in thesingle heater test at Yucca Mountain
The Single Heater Test (SHT) is one of two in-situ thermal tests included in the site characterization program for the potential underground nuclear waste repository at Yucca Mountain. The heating phase of the SHT started in August 1996, and was completed in May 1997 after 9 months of heating. The coupled processes in the unsaturated fractured rock mass around the heater were monitored by numerous sensors for thermal, hydrological, mechanical and chemical data. In addition to passive monitoring, active testing of the rock mass moisture content was performed using geophysical methods and air injection testing. The extensive data set available from this test gives a unique opportunity to improve the understanding of the thermal-hydrological situation in the natural setting of the repository rocks. The present paper focuses on the 3-D numerical simulation of the thermal-hydrological processes in the SHT using TOUGH2. In the comparative analysis, they are particularly interested in the accuracy of different fracture-matrix-interaction concepts such as the Effective Continuum (ECM), the Dual Continuum (DKM), and the Multiple Interacting Continua (MINC) method.
Date:
August 8, 1998
Creator:
Birkholzer, Jens T. & Tsang, Yvonne W.
Object Type:
Report
System:
The UNT Digital Library
Structural Formation Studies of UV-Catalyzed Gels and Aerogels by Light Scattering
The skeletal structure of aerogel is determined before, during, and after the gel is formed. Supercritical drying of aerogel largely preserves the pore structure that is determined near the time of gelation. To better understand these gel formation mechanisms we carried out measurements of the time evolution of light scattering in a series of gels prepared without conventional acid or base catalysis. Instead, ultraviolet light was used to catalyze the formation of silica gels made from the hydrolysis of tetraethylorthosilicate and partly prehydrolyzed tetraethylorthosilicate in ethanol. Time evolution of light scattering provides information regarding the rate and geometrical nature of the assembly of the primary silica particles formed in the sol. UV-catalyzed gels show volumetric growth typical of acid-catalyzed gels, except when UV exposure is discontinued at the gel point, where gels then show linear chain formation typical of base-catalyzed gels. Long term UV exposure leads to coarsening of the pore network, a decrease in the clarity of the aerogel, and an increase in the surface area of the aerogel. Additionally, UV exposure up to the gel point leads to increased crystallinity in the final aerogel.
Date:
April 1, 1998
Creator:
Hunt, Arlon J. & Ayers, Michael R.
Object Type:
Article
System:
The UNT Digital Library
Pyrite oxidation in saturated and Unsaturated Porous Media Flow: AComparison of alternative mathematical modeling approaches
Pyrite (FeS{sub 2}) is one of the most common naturally occurring minerals that is present in many subsurface environments. It plays an important role in the genesis of enriched ore deposits through weathering reactions, is the most abundant sulfide mineral in many mine tailings, and is the primary source of acid drainage from mines and waste rock piles. The pyrite oxidation reaction serves as a prototype for oxidative weathering processes with broad significance for geoscientific, engineering, and environmental applications. Mathematical modeling of these processes is extremely challenging because aqueous concentrations of key species vary over an enormous range, oxygen inventory and supply are typically small in comparison to pyrite inventory, and chemical reactions are complex, involving kinetic control and microbial catalysis. We present the mathematical formulation of a general multi-phase advective-diffusive reactive transport model for redox processes. Two alternative implementations were made in the TOUGHREACT and TOUGH2-CHEM simulation codes which use sequential iteration and simultaneous solution, respectively. The simulators are applied to reactive consumption of pyrite in (1) saturated flow of oxidizing water, and (2) saturated-unsaturated flow in which oxygen transport occurs in both aqueous and gas phases. Geochemical evolutions predicted from different process models are compared, and issues of …
Date:
February 15, 1998
Creator:
Xu, Tianfu; White, Stephen P. & Pruess, Karsten
Object Type:
Report
System:
The UNT Digital Library
Weir Property Habitat Evaluation: Project Report
A habitat evaluation of the Weir property, an approximately 200-acre in holding of private property within the Little Pend Oreille National Wildlife Refuge (Refuge), was conducted using the Habitat Evaluation Procedures (HEP) methodology. The Weir property consists of two separate parcels, an upper unit of 40 acres and a 160-acre lower unit. Evaluation species were ruffed grouse and white-tailed deer. Life requisites evaluated were available browse for white-tailed deer and winter food and fall-to-spring cover for ruffed grouse. Field data were collected on October 16, 17, and 21, 1997. Approximately 37 acres of the lower 160-acre unit are currently grasslands with no shrub or tree cover, and therefore do not provide suitable ruffed grouse or white-tailed deer cover. They excluded this acreage from the HEP calculations for current conditions. This acreage was included in the HEP calculations for ruffed grouse after future management strategies were factored in. It was not included in projections for white-tailed deer. The entire property was stratified into 6 stands (2 in the upper unit and 4 in the lower unit) for data collection. Data were collected at 10 points, spaced 20 paces (approximately 16 m) apart along one randomly selected transect in each stand, for …
Date:
February 1998
Creator:
Smith, Maureen
Object Type:
Report
System:
The UNT Digital Library
DOE SPENT NUCLEAR FUEL DISPOSAL CONTAINER
The DOE Spent Nuclear Fuel Disposal Container (SNF DC) supports the confinement and isolation of waste within the Engineered Barrier System of the Mined Geologic Disposal System (MGDS). Disposal containers are loaded and sealed in the surface waste handling facilities, transferred to the underground through the access mains, and emplaced in emplacement drifts. The DOE Spent Nuclear Fuel Disposal Container provides long term confinement of DOE SNF waste, and withstands the loading, transfer, emplacement, and retrieval loads and environments. The DOE SNF Disposal Containers provide containment of waste for a designated period of time, and limit radionuclide release thereafter. The disposal containers maintain the waste in a designated configuration, withstand maximum handling and rockfall loads, limit the individual waste canister temperatures after emplacement. The disposal containers also limit the introduction of moderator into the disposal container during the criticality control period, resist corrosion in the expected repository environment, and provide complete or limited containment of waste in the event of an accident. Multiple disposal container designs may be needed to accommodate the expected range of DOE Spent Nuclear Fuel. The disposal container will include outer and inner barrier walls and outer and inner barrier lids. Exterior labels will identify the …
Date:
June 26, 1998
Creator:
Habashi, F.
Object Type:
Report
System:
The UNT Digital Library