Collection
Office of Scientific & Technical Information Technical Reports
315
Congressional Research Service Reports
133
Texas Patents
52
Government Accountability Office Reports
43
Technical Report Archive and Image Library
36
Texas Attorney General Opinions
36
National Advisory Committee for Aeronautics Collection
20
Texas Register
10
TRAIL Microcard Collection
7
Texas State Publications
6
8 More
Serial/Series Title
Country
States
639 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
639
next
LITERATURE SEARCH ON LEAD-BISMUTH ALLOYS
BS>The use of a lead-bismuth alloy as a coolant in the removal of heat from power-generating nuclear reactors was considered with the possibility that its ternary alloy with uranium or plutonium might be of use in a reactor of the circulating-liquid-fuel type. Information collected from the literature covering phase-equilibrium studies, physicalproperty data, and reactivity of this alloy toward other substances is presented. (auth)
Date:
February 14, 1950
Creator:
Lee, M.E.
Object Type:
Report
System:
The UNT Digital Library
Interaction of xenon light with the surface of 304 stainless steel
Laser amplifier frames fabricated from Type 304 stainless steel are known to cause damage to glass lenses by ejecting particles which are deposited on the lenses. High energy pulses of xenon light interact with the steel surface to produce damage sites. Heat treatment and surface cleaning procedures greatly affect the surface stability of the steel and influence contamination generated by the steel. It is believed that inclusions and/or carbides play a role, and the size of damage sites observed on glass correlate with the size of nonmetallic phases in the steel. Thermal etching of the steel was found to be a principle mechanism of surface damage caused by the high energy xenon light.
Date:
February 14, 1978
Creator:
Krenzer, R. W.
Object Type:
Report
System:
The UNT Digital Library
LLL Geothermal Energy Development Program. Status Report, January 1974--January 1975. [Impulse Turbines, Total Flow Conversion Systems]
None
Date:
February 14, 1975
Creator:
Austin, A. L.
Object Type:
Report
System:
The UNT Digital Library
Analysis of LOFT steam generator main feed piping loop seal modification
The stress analysis is presented for the proposed loop seal modification to the LOFT Steam Generator Main Feed Piping. THE SAP IV finite element computer program was used to analyze normal, upset, emergency, and faulted conditions. Results of the analysis indicate that the modified main feed piping system will satisfy all structural adequacy criteria specified in Subarticle NC-3650 of the ASME Boiler and Pressure Vessel Code. Results also show that the isolation snubber configuration, specified in LTR 115-11, will also be adequate for the piping configuration analyzed.
Date:
February 14, 1978
Creator:
Nitzel, M.E.
Object Type:
Report
System:
The UNT Digital Library
Analysis of potential nonelectrical applications of geothermal energy and their place in the national economy
None
Date:
February 14, 1975
Creator:
Reistad, G.M.
Object Type:
Report
System:
The UNT Digital Library
DISSOLUTION OF BeO-AND Al$sub 2$O$sub 3$-BASE REACTOR FUEL ELEMENTS. PART I
Aqueous methods for recovering uranium from BeO- and Al/sub 2/O/sub 3/- base gas-cooled-reactor fuel elements are being evaluated. Two methods for processing Hastelloy-X--clad pelletized BeO-base fuels containing 60 to 70% UO/ sub 2/, such as the GCRE and MGCR, seem feasible. One method involves mechanical stripping or chopping of the cladding followed by leaching of the uranium from the fuel pellets with boiling 6-l3M HNO/sub 3/. In the other method the cladding and UO/sub 2/ are dissolved in boiling 2M HNO/sub 3/-4M HCl. In either case, most of the BeO matrix remains as an undissolved residue. Pellets containing 70% UO/sub 3/ dissolved completely in less than 20 hr in boiling 8M HNO/sub 3/ containing either 2M H/sub 2/SO/sub 4/ or 0.5M HF, producing solutions containing 4 g of uranium per liter. Fuels of high BeO content, e.g. BeO--5% UO/sub 2/, dissolved only slowly in boiling aqueous reagents. Highest initial rates were in sulfuric acid solutions, log (Rate, mg min/sup -1/cm/sup -2/) = 0.223 (H/sub 2/SO/ sub 4, M) - 2.8l and in HF--NH/sub 4/F solutions. ln boiling 5-8M NH/sub 4/F the initial dissolution rate increased from 0.07 to 3.5 mg min/sup -1/cm/sup -2/ as the HF concentration increased from 0 …
Date:
February 14, 1962
Creator:
Warren, K S; Ferris, L M & Kibbey, A H
Object Type:
Report
System:
The UNT Digital Library
Development of copper sulfide/cadmium sulfide thin film solar cells. First technical progress report, 13 July 1979 to 12 October 1979
Preparation of CdS films by evaporation from a single graphite source, as generally used by the Institute of Energy Conversion (IEC) group at the University of Delaware, has been implemented. Previously at Westinghouse, four evaporation sources were used to permit uniform coverage of large area substrates. The graphite source used in this period is somewhat smaller than the IEC design to permit accommodation to the heater geometry currently available. Initial efforts with the single source evaporation have been on characterizing the thickness profiles of the deposited films. This is needed to permit selection of conditions for obtaining films of about 30..mu..m thickness over the central 4 cm x 4 cm area of the substrate. Barrier processing according to the details of IEC method has been used on four-source CdS films. To date the best cells have only been about 1% efficient. Low short circuit current density values (approx. 5 mA/cm/sub 2/) have been the biggest problem. Annealing in 6% H/sub 2//Ar mixtures at 170/sup 0/C after electrode grid evaporation generally has resulted in reduced values of J/sub sc/. Plans for the next period include the use of single source films for cell processing and the use of small area diode …
Date:
February 14, 1980
Creator:
Szedon, J. R.; Shirland, F. A.; Stoll, J. A. & Dickey, H. C.
Object Type:
Report
System:
The UNT Digital Library
PWR blowdown heat transfer separate-effects program: thermal-hydraulic test facility experimental data report for test 104
Reduced instrument responses are presented for Thermal-Hydraulic Test Facility (THTF) test 104, which is part of the ORNL Pressurized-Water Reactor (PWR) Blowdown Heat Transfer Separate-Effects Program. The objective of the program is to investigate the thermal-hydraulic phenomenon governing the energy transfer and transport processes that occur during a loss-of-coolant accident in the PWR system. Test 104 was conducted to obtain CHF in bundle 1 under blowdown conditions. The primary purpose of this report is to make the reduced instrument responses during test 104 available.
Date:
February 14, 1978
Creator:
Leon, D. M.; White, M. D.; Moore, P. A. & Hedrick, R. A.
Object Type:
Report
System:
The UNT Digital Library
Cell and stack design alternatives. Second quarterly report, November 1, 1978-January 31, 1979
Progress on a program to develop commercially viable phosphoric acid fuel cell driven on-site integration energy systems is presented. A mass and energy balance was completed for one operating point of a selected power generation sub-system with a power output of 119 kW. Potentially, 87% of the LHV of the input fuel is available as bus bar electricity or useful heat. A 2 kW stack of conventional design and a 0.5 kW DIGAS cooled stack have been constructed and are on test at ERC. Renovation of a space for the Westinghouse stack test facility is underway and procurement of equipment has been initiated. The coupled cell temperature - current density analysis has been modified to include the effects of turbulent coolant flow and extended to permit analysis of up to 10 process plates between cooling plates. The REFORM computer program was verified by comparison with data received from the government project manager. A method for predicting carbon deposition was developed and compared with data from the literature.
Date:
February 14, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Polyacetylene, (CH)/sub x/, as an emerging material for solar cell applications. Technical progress report, October, November, December 1979
Initial studies of p-n heterojunctions formed between undoped trans-(CH)/sub x/ and n-CdS are reported. The junctions were characterized by measurements of current vs voltage (I-V), capacitance vs voltage (C-V), and photovoltaic response spectra. The results are analyzed in terms of the standard heterojunction equations. It is concluded that undoped as-grown films of trans-(CH)/sub x/ are p-type with a residual acceptor concentration of 2 x 10/sup 18/ cm/sup -3/, and that in spite of the complex fibril morphology the semiconductor properties can be inferred by treating (CH)/sub x/ as an effective homogeneous medium. Detailed studies of the photovoltaic response at energies below the energy gap for (CH)/sub x/ imply the existence of a well-defined deep trapping state in polyacetylene with an energy near the center of the gap.
Date:
February 14, 1980
Creator:
Heeger, A.J. & MacDiarmid, A.G.
Object Type:
Report
System:
The UNT Digital Library
LOFT blowdown loop piping thermal analysis Class I review
In accordance with ASME Code, Section III requirements, all analyses of Class I components must be independently reviewed. Since the LOFT blowdown loop piping up through the blowdown valve is a Class I piping system, the thermal analyses are reviewed. The Thermal Analysis Branch comments to this review are also included. It is the opinion of the Thermal Analysis Branch that these comments satisfy all of the reviewers questions and that the analyses should stand as is, without additional considerations in meeting the ASME Code requirements and ANC Specification 60139.
Date:
February 14, 1978
Creator:
Kinnaman, T.L.
Object Type:
Report
System:
The UNT Digital Library
The U.S.-Colombia Free Trade Agreement: Background and Issues
This report discusses the proposed U.S.-Colombia Free Trade Agreement (CFTA) signed November 22, 2006, which has not yet been approved by Congress. It includes an overview of the proposed CFTA and U.S.-Colombia trade, background on Colombia, issues for Congress to consider, Colombia's plan to improve labor rights, and the actions that Colombia has already taken to improve violence, labor, and human rights within the country.
Date:
February 14, 2014
Creator:
Villarreal, M. Angeles
Object Type:
Report
System:
The UNT Digital Library
Lebanon: Background and U.S. Policy
This report provides an overview of Lebanon and current issues of U.S. interest. It offers background information, analyzes recent developments and key legislative debates, and tracks legislation, U.S. assistance, and recent congressional action.
Date:
February 14, 2014
Creator:
Blanchard, Christopher M.
Object Type:
Report
System:
The UNT Digital Library
Bahrain: Reform, Security, and U.S. Policy
This report discusses the current state of Bahrain, which has undergone substantial political reforms since the late 1990s, but which still suffers from tension between the Shiite majority and the Sunni-led government. It focuses particularly on Bahrain's relationship with Iran and with the United States.
Date:
February 14, 2014
Creator:
Katzman, Kenneth
Object Type:
Report
System:
The UNT Digital Library
The Education Sciences Reform Act
This report discusses the Education Sciences Reform Act (ESRA, Title I of P.L. 107-279) that established the Institute of Education Sciences (IES) as an independent research arm of the Department of Education (ED).
Date:
February 14, 2014
Creator:
Kuenzi, Jeffrey J. & Stoll, Adam
Object Type:
Report
System:
The UNT Digital Library
Changes in the Arctic: Background and Issues for Congress
This report provides an overview of Arctic-related issues for Congress and refers readers to more in-depth CRS reports on specific relevant topics.
Date:
February 14, 2014
Creator:
O'Rourke, Ronald
Object Type:
Report
System:
The UNT Digital Library
State Government Fiscal Stress and Federal Assistance
This report examines the current status of state fiscal conditions and the role of federal assistance in state budgets. It begins with an overview of state budgeting procedures and then provides budgetary data comparing state fiscal conditions in FY2008 to FY2013. This report concludes with an assessment of the consequences current levels of state fiscal stress may have for the 113th Congress.
Date:
February 14, 2014
Creator:
Dilger, Robert Jay
Object Type:
Report
System:
The UNT Digital Library
Alternative Methods for Collecting Airport Passenger Facility Charges
Correspondence issued by the Government Accountability Office with an abstract that begins "GAO identified three basic alternative methods to the current airline ticket-based method for PFC collections. These methods are not mutually exclusive and could be used by either individual airports or a group or airports:"
Date:
February 14, 2013
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Indian Country Criminal Justice: Departments of the Interior and Justice Should Strengthen Coordination to Support Tribal Courts
A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Justice (DOJ) reports from the latest available data that from 1992 to 2001 American Indians experienced violent crimes at more than twice the national rate. The Department of the Interior (DOI) and DOJ provide support to federally recognized tribes to address tribal justice issues. Upon request, GAO analyzed (1) the challenges facing tribes in adjudicating Indian country crimes and what federal efforts exist to help address these challenges and (2) the extent to which DOI and DOJ have collaborated with each other to support tribal justice systems. To do so, GAO interviewed tribal justice officials at 12 tribes in four states and reviewed laws, including the Tribal Law and Order Act of 2010, to identify federal efforts to assist tribes. GAO selected these tribes based on court structure, among other factors. Although the results cannot be generalized, they provided useful perspectives about the challenges various tribes face in adjudicating crime in Indian country. GAO also compared DOI and DOJ's efforts against practices that can help enhance and sustain collaboration among federal agencies and standards for internal control in the federal government."
Date:
February 14, 2011
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
VA Health Care: VA Should Expedite the Implementation of Recommendations Needed to Improve Post-Traumatic Stress Disorder Services
A letter report issued by the Government Accountability Office with an abstract that begins "Post-traumatic stress disorder (PTSD), which is caused by an extremely stressful event, can develop after military combat and exposure to the threat of death or serious injury. Mental health experts estimate that the intensity of warfare in Iraq and Afghanistan could cause more than 15 percent of servicemembers returning from these conflicts to develop PTSD. Symptoms of PTSD can be debilitating and include insomnia; intense anxiety; and difficulty coping with work, social, and family relationships. Left untreated, PTSD can lead to substance abuse, severe depression, and suicide. Symptoms may appear within months of the traumatic event or be delayed for years. While there is no cure for PTSD, experts believe early identification and treatment of PTSD symptoms may lessen their severity and improve the overall quality of life for individuals with this disorder. The Department of Veterans Affairs (VA) is a world leader in PTSD treatment and offers PTSD services to eligible veterans. To inform new veterans about the health care services it offers, VA has increased outreach efforts to servicemembers returning from the Iraq and Afghanistan conflicts. Outreach efforts, coupled with expanded access to VA …
Date:
February 14, 2005
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Elderly Housing: Federal Housing Programs That Offer Assistance for the Elderly
A letter report issued by the Government Accountability Office with an abstract that begins "According to the 2003 American Housing Survey sponsored by the U.S. Department of Housing and Urban Development (HUD), nearly one-third of elderly households--those whose head was age 62 or older--were experiencing housing affordability problems. Further, a congressional commission reported in 2002 that investment in affordable housing is decreasing, although the elderly population is expected to increase. A number of federal housing programs provide assistance, including rent subsidies, mortgage insurance, and loans and grants for the purchase or repair of homes, to low-income renters and homeowners. These programs are administered primarily by HUD or the U.S. Department of Agriculture (USDA). GAO was asked to determine the extent to which federal housing programs provide benefits to elderly households, summarize information on the programs' effectiveness in assisting the elderly and supportive services, and determine how HUD and USDA avoid overlap and duplication in their programs."
Date:
February 14, 2005
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Homeland Security: Recommendations to Improve Management of Key Border Security Program Need to Be Implemented
A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Homeland Security (DHS) has established a program--the U.S. Visitor and Immigrant Status Indicator Technology (US-VISIT)--to collect, maintain, and share information, including biometric identifiers, on selected foreign nationals entering and exiting the United States. US-VISIT uses these identifiers (digital fingerscans and photographs) to screen persons against watch lists and to verify that a visitor is the person who was issued a visa or other travel document. Visitors are also to confirm their departure by having their visas or passports scanned and undergoing fingerscanning at selected air and sea ports of entry (POE). GAO has made many recommendations to improve the program, all of which DHS has agreed to implement. GAO was asked to report on DHS's progress in responding to 18 of these recommendations."
Date:
February 14, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Nuclear Weapons: NNSA Needs More Comprehensive Infrastructure and Workforce Data to Improve Enterprise Decision-making
A letter report issued by the Government Accountability Office with an abstract that begins "The United States intends to invest about $80 billion to maintain and modernize its nuclear weapons capabilities and infrastructure over the next decade. The National Nuclear Security Administration (NNSA), a semi-autonomous agency within the Department of Energy (DOE), maintains the nation's nuclear weapons through its Stockpile Stewardship Program (SSP). NNSA uses contractors to manage and operate eight separate sites, referred to as the nuclear security enterprise, to achieve the SSP's mission. The National Defense Authorization Act for Fiscal Year 2010 directed GAO to review the SSP. This report focuses on the extent to which NNSA has the data necessary to make informed, enterprisewide decisions, particularly data on the condition of infrastructure, capital improvement projects, shared use of facilities, and critical human capital skills. GAO analyzed agency infrastructure data; reviewed agency directives and guidance; and interviewed DOE, NNSA, and contractor officials."
Date:
February 14, 2011
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Veterans' Benefits: Improved Management Would Enhance VA's Pension Program
A letter report issued by the Government Accountability Office with an abstract that begins "In 2006, the Department of Veterans Affairs (VA) paid about $3.5 billion in means-tested pension benefits to over 500,000 veterans and survivors. GAO was asked to review the management of VA pension program. This report assesses (1) the characteristics and trends in size of the current pensioner population, (2) the policies and procedures VA has in place to ensure that initial pension eligibility decisions are well managed, and (3) the procedures VA has in place to ensure that pensioners continue to receive the proper benefit payments on an ongoing basis. Our study included reviews of agency policies, procedures, and internal controls; site visits to 4 of VA's 57 regional offices and all three of its pension maintenance centers; and a selected file review of new claims at three locations."
Date:
February 14, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library