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Office of Scientific & Technical Information Technical Reports
1,308
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779
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401
Government Accountability Office Reports
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55
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40
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2,881 Matching Results
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Deprivation of Honest Services as a Basis for Federal Mail and Wire Fraud Convictions
This report discusses wire and mail fraud and examines relevant court cases.
Date:
October 6, 2009
Creator:
Henning, Anna C.
Object Type:
Report
System:
The UNT Digital Library
Economic Stimulus: Issues and Policy
This report discusses the passing of the American Recovery and Reinvestment Act of 2009, which included tax cut and spending provisions totaling at a cost of $787 billion in an attempt to mitigate the economic fallout of the housing and financial crises on the general economy. The report examines issues surrounding fiscal stimulus such as timeliness, the magnitude of stimulus, long-term effects and previously adopted policies.
Date:
October 6, 2009
Creator:
Gravelle, Jane G.; Hungerford, Thomas L. & Labonte, Marc
Object Type:
Report
System:
The UNT Digital Library
Enhancing Condensers for Geothermal Systems: the Effect of High Contact Angles on Dropwise Condensation Heat Transfer
Phase change heat transfer is notorious for increasing the irreversibility of, and therefore decreasing the efficiency of, geothermal power plants. Its significant contribution to the overall irreversibility of the plant makes it the most important source of inefficiency in the process. Recent studies here have shown the promotion of drop wise condensation in the lab by means of increasing the surface energy density of a tube with nanotechnology. The use of nanotechnology has allowed the creation of surface treatments which discourage water from wetting a tube surface during a static test. These surface treatments are unique in that they create high- contact angles on the condensing tube surfaces to promote drop wise condensation.
Date:
October 6, 2009
Creator:
Kennedy, John M.; Kim, Sunwoo & Kim, Kwang J.
Object Type:
Text
System:
The UNT Digital Library
Honduran-U.S. Relations
This report discusses the current state of Honduras, which is one of the Western Hemisphere's poorest countries and has a high poverty rate, high infant mortality rate, and a widespread HIV/AIDS epidemic. This report also discusses the relationship between the U.S. and Honduras, focusing on the countries' important trade partnership, the U.S. military presence in Honduras, and U.S. foreign aid.
Date:
October 6, 2009
Creator:
Meyer, Peter J.
Object Type:
Report
System:
The UNT Digital Library
Investigations of Cadmium Manganese Telluride Crystals for Room-Temperature Radiation Detection
Cadmium manganese telluride (CMT) has high potential as a material for room-temperature nuclear-radiation detectors. We investigated indium-doped CMT crystals taken from the stable growth region of the ingot, and compared its characteristics with that from the last-to-freeze region. We employed different techniques, including synchrotron white-beam X-ray topography (SWBXT), current-voltage (I-V) measurements, and low-temperature photoluminescence spectra, and we also assessed their responses as detectors to irradiation exposure. The crystal from the stable growth region proved superior to that from the last-to-freeze region; it is a single-grain crystal, free of twins, and displayed a resistivity higher by two orders-of-magnitude. The segregation of indium dopant in the ingot might be responsible for its better resistivity. Furthermore, we recorded a good response in the detector fabricated from the crystal taken from the stable growth region; its ({mu}{tau}){sub e} value was 2.6 x 10{sup -3} cm{sup 2}/V, which is acceptable for thin detectors, including for applications in medicine.
Date:
October 6, 2009
Creator:
Yang, G.; Bolotnikov, A.; Camarda, G.; Cui, Y.; Hossain, A.; Kim, K. et al.
Object Type:
Article
System:
The UNT Digital Library
Iraq: Regional Perspectives and U.S. Policy
This report provides information about the current perspectives and policies of Iraq's neighbors following the fall of the Saddam Hussein regime in 2003; analyzes potential regional responses to renewed violence and longer-term stabilization efforts; discusses shared concerns and U.S. long-term regional interests; and reviews U.S. policy options for responding to various contingencies.
Date:
October 6, 2009
Creator:
Blanchard, Christopher M.; Katzman, Kenneth & Migdalovitz, Carol
Object Type:
Report
System:
The UNT Digital Library
A Laser Technology Test Facility for Laser Inertial Fusion Energy (LIFE)
A LIFE laser driver needs to be designed and operated which meets the rigorous requirements of the NIF laser system while operating at high average power, and operate for a lifetime of >30 years. Ignition on NIF will serve to demonstrate laser driver functionality, operation of the Mercury laser system at LLNL demonstrates the ability of a diode-pumped solid-state laser to run at high average power, but the operational lifetime >30 yrs remains to be proven. A Laser Technology test Facility (LTF) has been designed to specifically address this issue. The LTF is a 100-Hz diode-pumped solid-state laser system intended for accelerated testing of the diodes, gain media, optics, frequency converters and final optics, providing system statistics for billion shot class tests. These statistics will be utilized for material and technology development as well as economic and reliability models for LIFE laser drivers.
Date:
October 6, 2009
Creator:
Bayramian, A. J.; Campbell, R. W.; Ebbers, C. A.; Freitas, B. L.; Latkowski, J.; Molander, W. A. et al.
Object Type:
Article
System:
The UNT Digital Library
Molecular beam epitaxy of GaNAs alloys with high As content for potential photoanode applications in hydrogen production
The authors have succeeded in growing GaN1?xAsx alloys over a large composition range (0 < x < 0.8) by plasma-assisted molecular beam epitaxy. The enhanced incorporation of As was achieved by growing the films with high As{sub 2} flux at low (as low as 100 C) growth temperatures, which is much below the normal GaN growth temperature range. Using x-ray and transmission electron microscopy, they found that the GaNAs alloys with high As content x > 0.17 are amorphous. Optical absorption measurements together with x-ray absorption and emission spectroscopy results reveal a continuous gradual decrease in band gap from -3.4 to < 1 eV with increasing As content. The energy gap reaches its minimum of -0.8 eV at x - 0.8. The composition dependence of the band gap of the crystalline GaN{sub 1?x}As{sub x} alloys follows the prediction of the band anticrossing model (BAC). However, our measured band gap of amorphous GaN{sub 1?x}As{sub x} with 0.3 < x < 0.8 are larger than that predicted by BAC. The results seem to indicate that for this composition range the amorphous GaN{sub 1?x}As{sub x} alloys have short-range ordering that resembles random crystalline GaN{sub 1?x}As{sub x} alloys. They have demonstrated the possibility of …
Date:
October 6, 2009
Creator:
Novikov, S. V.; Staddon, C. R.; Foxon, C. T.; Yu, K. M.; Broesler, R.; Hawkridge, M. et al.
Object Type:
Article
System:
The UNT Digital Library
Obscenity, Child Pornography, and Indecency: Brief Background and Recent Developments
The First Amendment provides that “Congress shall make no law ... abridging the freedom of speech, or of the press. ...” The First Amendment applies, with two exceptions, to pornography, with that term being used to refer to any words or pictures of a sexual nature. This report discusses the two exceptions, which are obscenity and child pornography; because these are not protected by the First Amendment, they may be, and have been, made illegal. Pornography and “indecent” material that are protected by the First Amendment may nevertheless be restricted in order to limit minors’ access to them.
Date:
October 6, 2009
Creator:
Cohen, Henry
Object Type:
Report
System:
The UNT Digital Library
Poverty in the United States
This report provides a definition of poverty and discusses the trends in poverty, poverty among selected groups, and the geography of poverty.
Date:
October 6, 2009
Creator:
Gabe, Thomas
Object Type:
Report
System:
The UNT Digital Library
RESULTS FOR THE FIRST QUARTER 2009 TANK 50 WAC SLURRY SAMPLE: CHEMICAL AND RADIONUCLIDE CONTAMINANT RESULTS
This report details the chemical and radionuclide contaminant results for the characterization of the 2009 First Quarter sampling of Tank 50 for the Saltstone Waste Acceptance Criteria (WAC). Information from this characterization will be used by Liquid Waste Operations (LWO) to support the transfer of low-level aqueous waste from Tank 50 to the Salt Feed Tank in the Saltstone Facility in Z-Area, where the waste will be immobilized. This information is also used to update the Tank 50 Waste Characterization System. The following conclusions are drawn from the analytical results provided in this report: (1) The concentrations of the chemical and radioactive contaminants were all less than their respective WAC Targets or Limits except for Am-242m. (2) The radionuclide Am-242m was not detected; however, its detection limit is above the WAC Target given in Attachment 8.4. The higher detection limit was expected based on current analytical capabilities as stated in the Task Technical and Quality Assurance Plan (TTQAP). (3) The reported detection limit of isopropanol was lower than its WAC Limit for accident analysis but higher than its WAC concentration given in Table 4 for vault flammability. The higher detection limit was expected based on current analytical capabilities and is …
Date:
October 6, 2009
Creator:
Reigel, M.; Diprete, C. & Bibler, N.
Object Type:
Report
System:
The UNT Digital Library
Taxable Base of the Value-Added Tax
None
Date:
October 6, 2009
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Veterans Benefits: Federal Employment Assistance
This report provides a brief overview of federal programs and policies specifically targeted to help veterans seeking employment in the civilian economy.
Date:
October 6, 2009
Creator:
Scott, Christine
Object Type:
Report
System:
The UNT Digital Library
Warm dense matter created by isochoric laser heating
None
Date:
October 6, 2009
Creator:
Ping, Y.; Correa, A.; Ogitsu, T.; Draeger, E.; Schwegler, E.; Widmann, K. et al.
Object Type:
Article
System:
The UNT Digital Library
Reduction and Reoxidation of Soils During and After Uranium Bioremediation; Implications for Long Term Uraninite Stability and Bioremediation Scheme Implementation
The goal of this research was to study the reoxidation of biologically precipitated U(IV). Several experiments were performed and are summarized below. These experiments include: (1) a long-term (~200 days) U(VI) reduction experiment under low sulfate conditions in order to study in detail changes in iron phases and biomass and determine how they affect/buffer reoxidation; (2) a short term (~70 days) experiment where we tracked the uranium profile via XANES prior to reoxidation and during reoxidation in order to determine the U speciation; (3) a short term experiment where we compare the oxidation of U(IV) by oxygen and nitrate in the absence of FeS; and (4) a short term experiment where we compare the oxidation of U(IV) by oxygen and nitrate in the presence of FeS precipitates.
Date:
September 6, 2009
Creator:
Myneni, Peter R Jaffe Satish
Object Type:
Report
System:
The UNT Digital Library
The 2009 Influenza Pandemic: An Overview
This report describes the World Health Organization (WHO) process to determine the phase of a threatened or emerging flu pandemic, and touches on several related issues.
Date:
August 6, 2009
Creator:
Lister, Sarah A. & Redhead, C. Stephen
Object Type:
Report
System:
The UNT Digital Library
Armenia, Azerbaijan, and Georgia: Political Developments and Implications for U.S. Interests
This report discusses the relationships between the United States and Armenia, Azerbaijan, and Georgia, as well as these three nations' political and economic conditions. The report also discusses key related issues in the second session of the 111th Congress, including the question of the United States' role in the South Caucasus, the significance of regional energy resources to U.S. interests, and other pertinent issues.
Date:
August 6, 2009
Creator:
Nichol, Jim
Object Type:
Report
System:
The UNT Digital Library
Ballistic Missile Defense: Actions Needed to Improve Planning and Information on Construction and Support Costs for Proposed European Sites
A letter report issued by the Government Accountability Office with an abstract that begins "The Missile Defense Agency (MDA) estimated in 2008 that the potential costs of fielding ballistic missile defenses in Europe would be more than $4 billion through 2015. Planned ballistic missile defenses in Europe are intended to defend the United States, its deployed forces, and its allies against ballistic missile attacks from the Middle East. They are expected to include a missile interceptor site in Poland, a radar site in the Czech Republic, and a mobile radar system in a still-to-be-determined European location. GAO was asked to evaluate the Department of Defense's (DOD) plans for missile defense sites in Europe and address to what extent DOD has (1) planned for the sites' implementation and (2) estimated military construction and long-term operations and support costs. Accordingly, GAO reviewed key legislation; examined policy and guidance from MDA, the Army, the Air Force, and the Army Corps of Engineers; analyzed budget documents and cost estimates; and visited sites in Poland and the Czech Republic."
Date:
August 6, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF): Budget and Operations
This report provides an overview of the Bureau of Alcohol, Tobacco, Firearms and Explosives' (ATF) budget and operations. The ATF is the lead federal law enforcement agency charged with administering and enforcing federal laws related to the manufacture, importation, and distribution of firearms and explosives.
Date:
August 6, 2009
Creator:
Krouse, William J.
Object Type:
Report
System:
The UNT Digital Library
Carbon Sequestration in Forests
This report examines basic questions concerning carbon sequestration in forests. The first section provides a brief background on congressional interest in forest carbon sequestration. The second describes the basic carbon cycle in forests, with an overview of how carbon cycling and storage vary among different types of forests. The third section then addresses how forest carbon is considered in the global climate change debate.
Date:
August 6, 2009
Creator:
Gorte, Ross W.
Object Type:
Report
System:
The UNT Digital Library
Department of Energy Office of Energy Efficiency and Renewable Energy Solid State Lighting Core Technologies
The project objective is to demonstrate high efficiency white emitting OLED devices with a target luminous efficiency between 100 1m/W and 150 1m/W with integrated microcavity structure and down conversion phosphors. The main focus of this work will be on three areas: (1) demonstration of a 2X reduction in OLED device operating voltage by employing the appropriate dopants in the carrier transporting layers; (2) demonstration of a 3X light out-coupling efficiency enhancement by incorporating microcavity structure in the OLED devices; and (3) demonstration of a 2X down-conversion efficiency enhancement (from blue to white) using phosphors.
Date:
August 6, 2009
Creator:
So, Franky; Holloway, Paul & Xue, Jiangeng
Object Type:
Report
System:
The UNT Digital Library
Fission-Fusion Neutron Source
None
Date:
August 6, 2009
Creator:
Chapline, G. F. & Clarke, R.
Object Type:
Article
System:
The UNT Digital Library
Guantanamo Detention Center: Legislative Activity in the 111th Congress
This report analyzes the relevant provisions of the Supplemental Appropriations Act, 2009, and selected legislative proposals that have been introduced in the 111th Congress.
Date:
August 6, 2009
Creator:
Henning, Anna C.
Object Type:
Report
System:
The UNT Digital Library
Hungry Horse Mitigation : Flathead Lake : Annual Progress Report 2008.
The Confederated Salish and Kootenai Tribes (CSKT) and Montana Fish Wildlife and Parks (MFWP) wrote the 'Fisheries Mitigation Plan for Losses Attributable to the Construction and Operation of Hungry Horse Dam' in March 1991 to define the fisheries losses, mitigation alternatives and recommendations to protect, mitigate and enhance resident fish and aquatic habitat affected by Hungry Horse Dam. On November 12, 1991, the Northwest Power Planning Council (NPPC) approved the mitigation plan with minor modifications, called for a detailed implementation plan, and amended measures 903(h)(1) through (7). A long-term mitigation plan was submitted in August 1992, was approved by the Council in 1993, and the first contract for this project was signed on November 11, 1993. The problem this project addresses is the loss of habitat, both in quality and quantity, in the Flathead Lake and River basin resulting from the construction and operation of Hungry Horse Dam. The purpose of the project is to both implement mitigation measures and monitor the biological responses to those measures including those implemented by Project Numbers 9101903 and 9101904. Goals and objectives of the 1994 Fish and Wildlife Program (Section 10.1) addressed by this project are the rebuilding to sustainable levels weak, but …
Date:
August 6, 2009
Creator:
Hansen, Barry & Evarts, Les
Object Type:
Report
System:
The UNT Digital Library