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IN-PILE GAS-COOLED FUEL ELEMENT TEST FACILITY
Paper presented at American Nuclear Society Meeting, June I8-21, 1962, Boston, Mass. Design and operating problems of unclad and ceramic gas-cooled reactor fuels in high temperature circulating gas systems will be studied using a test facility now nearing completion at the Oak Ridge Research Reactor. A shielded air-tight cell houses a closed circuit gas system equipped for dealing with fission products circulating in the gas. Experiments can be conducted on fuel element performance and stability, fission product deposition, gas clean up, activity levels, component and system performance and shielding, and decontamination and maintenance of system hardware. (auth)
Date:
July 10, 1962
Creator:
Zasler, J.; Huntley, W. R.; Gnadt, P. A. & Kress, T. S.
Object Type:
Report
System:
The UNT Digital Library
Thermal Control System and Method for a Passive Solar Storage Wall
A system and method are provided for controlling the storing and release of thermal energy from a thermal storage wall wherein said wall is capable of storing thermal energy from insolation. The system and method includes a device such as a plurality of louvers spaced a predetermined distance from the thermal wall for regulating the release of thermal energy from the thermal wall. This regulating device is made from a material which is substantially transparent to the incoming solar radiation so that when it is in any operative position, the thermal storage wall substantially receives all of the impacting solar radiation. The material in the regulating device is further capable of being substantially opaque to thermal energy so that when the device is substantially closed, thermal release of energy from the storage wall is substantially minimized. An adjustment device is interconnected with the regulating mechanism for selectively opening and closing it in order to regulate the release of thermal energy from the wall.
Date:
July 10, 1981
Creator:
Ortega, Joseph Kenneth Earl
Object Type:
Patent
System:
The UNT Digital Library
Electron energies in metals
The modern era of electron-electron interactions began a decade ago. Plummer's group initiated a program of using angular resolved photoemission to examine the band structure of the simple metals. Beginning with aluminum, and carrying on to sodium and potassium, they always found that the occupied energy bands were much narrower than expected. For example, the compressed energy bands for metallic potassium suggest a band effective mass of m* = 1.33m{sub e}. This should be compared to the band mass found from optical conductivity m*/m{sub e} = 1.01 {plus minus} 0.01. The discrepancy between these results is startling. It was this great difference which started my group doing calculations. Our program was two-fold. On one hand, we reanalyzed the experimental data, in order to see if Plummer's result was an experimental artifact. On the other hand, we completely redid the electron-electron self-energy calculations for simple metals, using the most modern choices of local-field corrections and vertex corrections. Our results will be reported in these lectures. They can be summarized as following: Our calculations give the same effective masses as the older calculations, so the theory is relatively unchanged; Our analysis of the experiments suggests that the recent measurements of band narrowing …
Date:
July 10, 1991
Creator:
Mahan, G.D. (Oak Ridge National Lab., TN (United States) Tennessee Univ., Knoxville, TN (United States). Dept. of Physics and Astronomy)
Object Type:
Article
System:
The UNT Digital Library
Scaling of current density, total current, emittance, and brightness for hydrogen negative ion sources
The atomic and molecular processes that play a principal role in negative ion formation in a hydrogen negative ion discharge are discussed. The collisions of energetic electrons with gas molecules within the discharge lead to vibrationally excited molecules. Thermal electrons in turn attach to these excited molecules and generate negative ions via the dissociative attachment process. A system geometry chosen to optimize these collision processes is discussed that consists of a high-power discharge in tandem with a low electron temperature bath, the two regions separated by a magnetic filter. The current density extracted from such a system is found to scale inversely with the system scale length provided the gas density and electron density are also increased inversely with scale length. If a system is scaled downward in size to provide a new beamlet but one with increased current density, and these beamlets are packed to fill the original dimension, the new total extracted current will exceed the original total current by the scale factor. The emittance, epsilon, of the new system remains unchanged. The brightness, J/epsilon/sup 2/, of the new system will also be increased in proportion to the scale factor. 4 refs., 2 figs.
Date:
July 10, 1986
Creator:
Hiskes, J.R.
Object Type:
Article
System:
The UNT Digital Library
Klamath County YMCA geothermal heating project environmental assessment
The YMCA Geothermal Heating project proposes to obtain approximately 57% of the total facility energy usage through direct application of the Klamath Falls KGRA. This will be accomplished through the design and construction of a retrofit and injection system for the utilization of an existing 110/sup 0/F geothermal energy source at the project site. The existing 2016 foot well will be outfitted with a turbine pump with variable speed drive. The well head will be enclosed by a 10' x 10' building. The geothermal fluid, pumped at a peak rate of 350 gpm will be transported to the YMCA Facility through 5'' diameter schedule 40 black iron pipe fitted with victaulic couplings for expansion. All underground supply pipes will be equipped with magnesium anodes for galvaic protection and will be insulted with 1'' thick calcium silicate insulation, with two layers of 45 number roofing felt applied with asphaltic compound. All supply lines within the building will be insulated with 1'' fiberglass insulation material with a cloth jacket. The fluids will pass through a heating coil and heat exchanger system to provide heat for the 30,000 square foot YMCA facility as well as for the 90,000 gallon swimming pool. The spent …
Date:
July 10, 1979
Creator:
Shreve, J.H. (ed.)
Object Type:
Report
System:
The UNT Digital Library
SLAC Divertor Channel Entrance Thermal Stress Analysis
X-ray beams emerging from the new SLAC electron-positron storage ring (PEP) impinge on the entrance to tangential divertor channels causing highly localized heating in the channel structure. Analyses were completed to determine the temperatures and thermally-induced stresses due to this heating. These parts are cooled with water flowing axially over them at 30/sup 0/C. The current design and operating conditions should result in the entrance to the new divertor channel operating at a peak temperature of 123/sup 0/C with a peak thermal stress at 91% of yield. Any micro-cracks that form due to thermally-induced stresses should not propagate to the coolant wall nor form a path for the coolant to leak into the storage ring vacuum. 34 figs., 4 tabs.
Date:
July 10, 1985
Creator:
Johnson, Gary L.; Stein, Werner; Lu, Stephen C. & Riddle, Robert A.
Object Type:
Report
System:
The UNT Digital Library
Importance of high order momentum terms in SLC optics
The evaluation of background levels at the SLC relies, in several cases, on the proper representation of how low momentum electrons propagate through the Arcs and the Final Focus System (FFS). For example, beam - gas bremsstrahlung in the arcs causes electrons of up to 6% energy loss to be transported through to the IP; secondary showers on edges of masks and collimators yield debris with a very wide momentum spectrum. This note is a naive attempt at checking the validity of TRANSPORT and TURTLE calculations, by evaluating the contributions of the momentum terms to increasingly higher order, and checking the mutual consistency of the results produced by the two methods on a beam of wide momentum spread. 8 refs., 4 figs., 1 tab.
Date:
July 10, 1985
Creator:
Kozanecki, W.
Object Type:
Report
System:
The UNT Digital Library
Wind-Tunnel Investigation to Determine the Horizontal- and Vertical-Tail Contributions to the Static Lateral Stability Characteristics of a Complete-Model Swept-Wing Configuration at High Subsonic Speeds
Results regarding an investigation to determine the horizontal- and vertical-tail contributions to the static lateral stability of a complete-model swept-wing configuration at high subsonic speeds. Generally, Mach number effects within the range studied and wing effects on the tail contribution were small and the overall trends of the data of the present investigation agreed with those which have been established at low speeds.
Date:
July 10, 1953
Creator:
Wiggins, James W.; Kuhn, Richard E. & Fournier, Paul G.
Object Type:
Report
System:
The UNT Digital Library
Kuwait: Security, Reform, and U.S. Policy
This report looks at Kuwait's relationships with its neighbors in the Persian Gulf, and its own political system which has been in turmoil since 2006.
Date:
July 10, 2013
Creator:
Katzman, Kenneth
Object Type:
Report
System:
The UNT Digital Library
Comprehensive Immigration Reform in the 113th Congress: Short Summary of Senate- Passed S. 744
Report that summarizes major immigration reform provisions of S. 744, as passed by the Senate.
Date:
July 10, 2013
Creator:
Rosenblum, Marc R. & Wasem, Ruth Ellen
Object Type:
Report
System:
The UNT Digital Library
[Letters from Two Citizens of Pennsylvania to Anthony Principi - July 10, 2005]
Letters from two concerned citizens to Anthony Principi regarding the potential BRAC closure of the 911th Airlift Wing of Pennsylvania.
Date:
July 10, 2005
Creator:
Ward, Amanda L.
Object Type:
Letter
System:
The UNT Digital Library
Iran: U.S. Concerns and Policy Responses
Much of the debate over U.S. policy toward Iran has centered on the nature of the current regime; some believe that Iran, a country of about 70 million people, is a threat to U.S. interests because hardliners in Iran's regime dominate and set a policy direction intended to challenge U.S. influence and allies in the region. President George W. Bush, in his January 29, 2002, State of the Union message, labeled Iran part of an "axis of evil" along with Iraq and North Korea. This report discusses how the Obama Administration differs from the Bush Administration regarding strategy in Iran relations. This report also discusses the current political state of Iran, including incidents of violence and unrest.
Date:
July 10, 2009
Creator:
Katzman, Kenneth
Object Type:
Report
System:
The UNT Digital Library
Coalition Correspondence – Letter dated 6/1/2005 to the BRAC Commission from Dana Donahue, President of the Perryton Ochiltree Chamber of Commerce
Coalition Correspondence – Letter dated 6/1/2005 to the BRAC Commission from Dana Donahue, President of the Perryton Ochiltree Chamber of Commerce stating factors in support of keeping Cannon Air Force Base in Clovis, New Mexico open.
Date:
July 10, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
Iraq: U.S. Assistance to Iraq's Minority Groups in Response to Congressional Directives
A letter report issued by the Government Accountability Office with an abstract that begins "GAO found that the United States Agency for International Development (USAID) could not demonstrate how the projects that it reported to Congress met the provisions of the 2008 directive because of three weaknesses. First, USAID documentsspecifically, the list of projects the agency submitted to Congress linked only $3.8 million of the $14.8 million in assistance (26 percent) directly to the Ninewa plain region. Second, USAID documents generally did not show whether the projects included minority groups among the beneficiaries of the assistance and specifically whether $8 million of assistance was provided for internally displaced families. Third, USAID officials and documents did not demonstrate that the agency used unobligated prior year Economic Support Fund (ESF) funds to initiate projects in response to the 2008 directive."
Date:
July 10, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Active Commuter Rail Agency Service Contracts
Correspondence issued by the Government Accountability Office with an abstract that begins "Commuter rail is an important part of the transportation system in many cities and regions in our country, providing more than 420 million passenger trips in 2005. Although several of the largest commuter rail agencies hire their own employees, many agencies contract with other companies, including Amtrak, freight railroads, and private rail operators, to provide services that are critical to running the agencies' trains. These contracted services include providing crews to operate trains (train operations); maintenance of equipment (MOE), including maintenance of train cars and locomotives; dispatching train traffic; and maintenance of way (MOW), which involves maintaining the track, signals, and other track infrastructure. Commuter rail agencies can obtain these services by opening contracts to competition or through noncompetitive negotiations with a service provider. Congress asked us to provide information on the service arrangements between commuter rail agencies and other companies. Accordingly, we addressed the following questions: (1) How many currently active commuter rail service contracts were obtained through competitive and noncompetitive processes? (2) What differences, if any, are there between competitively and noncompetitively negotiated contracts?"
Date:
July 10, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
State and Local Government Pension Plans: Current Structure and Funded Status
Testimony issued by the Government Accountability Office with an abstract that begins "Millions of state and local government employees are promised pension benefits when they retire. Although these benefits are not subject, for the most part, to federal laws governing private sector benefits, there is a federal interest in ensuring that all American have a secure retirement, as reflected in the special tax treatment provided for private and public pension funds. Recently, new accounting standards have called for the reporting of liabilities for future retiree health benefits. It is unclear what actions state and local governments may take once the extent of these liabilities become clear but such anticipated fiscal and economic challenges have raised questions about the unfunded liabilities for state and local retiree benefits, including pension benefits. GAO was asked to report on (1) the current structure of state and local government pension plans and how pension benefits are protected and managed, and (2) the current funded status of state and local government pension plans. GAO spoke to a wide range of public experts and officials from various federal and nongovernmental entities, made several site visits and gathered detailed information about state benefits, and analyzed self-reported data on …
Date:
July 10, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Compact of Free Association: An Assessment of the Amended Compacts and Related Agreements
Testimony issued by the General Accounting Office with an abstract that begins "In 1986, the United States entered into a Compact of Free Association with the Pacific Island nations of the Federated States of Micronesia, or FSM, and the Republic of the Marshall Islands, or RMI. The Compact provided about $2.1 billion in U.S. funds, supplied by the Department of the Interior, over 17 years (1987-2003) to the FSM and the RMI. These funds were intended to advance economic development. In a past report, GAO found that this assistance did little to advance economic development in either country, and accountability over funding was limited. The Compact also established U.S. defense rights and obligations in the region and allowed for migration from both countries to the United States. The three parties recently renegotiated expiring economic assistance provisions of the Compact in order to provide an additional 20 years of assistance (2004-2023). In addition, the negotiations addressed defense and immigration issues. The House International Relations and Resources Committees requested that GAO report on Compact negotiations. This testimony discusses negotiated changes to the levels and structure of future assistance, including the potential cost to the U.S. government. Further, it reviews accountability, defense, and …
Date:
July 10, 2003
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Wildland Fires: Forest Service's Removal of Timber Burned by Wildland Fires
Correspondence issued by the General Accounting Office with an abstract that begins "Wildland fires burned over 8 million acres during the 2000 wildfire season, making it one of the worst in the past 50 years. As a result, a National Fire Plan was implemented beginning in 2001 to better prevent, prepare for, respond to, and repair damage caused by wildland fires. In fiscal years 2001 through 2003, Congress provided $4.9 billion to the U.S. Department of Agriculture's (USDA) Forest Service to implement the National Fire Plan on land that it manages. Of this amount, Congress earmarked $212 million to fund the rehabilitation of land burned by wildland fires. In general, rehabilitation covers long-term efforts to improve lands unlikely to recover naturally from wildland fire damage. In some cases, rehabilitation may include removing timber from burnt land to, among other things, reduce hazardous fuels. Questions have been raised, however, about whether it is appropriate to use rehabilitation funds for removing such timber, which can be sold. Trees that are removed from National Forest System land can be either green and healthy or dead or dying as a result of disease or wildland fire. Depending on their value, the trees may be …
Date:
July 10, 2003
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Counternarcotics Assistance: U.S. Agencies Have Allotted Billions in Andean Countries, but DOD Should Improve Its Reporting of Results
A letter report issued by the Government Accountability Office with an abstract that begins ""
Date:
July 10, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Nuclear Cleanup of Rocky Flats: DOE Can Use Lessons Learned to Improve Oversight of Other Sites' Cleanup Activities
A letter report issued by the Government Accountability Office with an abstract that begins "In 2001, when GAO reported on the cleanup of the Department of Energy's (DOE) Rocky Flats site, a former nuclear weapons production facility, the cleanup was behind schedule and over cost. In October 2005, the contractor declared that it had completed the cleanup much earlier and at less cost than DOE and the contractor had anticipated 5 years earlier. GAO was asked to determine the (1) factors that contributed to the cleanup's early completion, (2) remaining work and total costs, (3) measures to assess whether the cleanup achieved a level of protection of public health and environment consistent with the cleanup agreement, and (4) lessons the Rocky Flats cleanup may offer for other DOE cleanup projects."
Date:
July 10, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Federal Employees' Compensation Act: Analysis of Benefits Under Proposed Program Changes
Testimony issued by the Government Accountability Office with an abstract that begins "GAO's simulation found that under the current Federal Employees' Compensation Act (FECA) program, the median wage replacement rate--the percentage of take-home pay replaced by FECA--for total-disability beneficiaries was 88 percent for U.S. Postal Service (USPS) beneficiaries and 80 percent for non-USPS beneficiaries in 2010. GAO also found that proposals to set initial FECA benefits at a single compensation rate would reduce these replacement rates by 3 to 4 percentage points under the 70-percent option and 7 to 8 percentage points under the 66-2/3 percent option. Beneficiaries with dependents would receive reduced FECA benefits under both options. The decreases in wage replacement rates were due to the greater proportion of beneficiaries who had a dependent--over 70 percent of both USPS and non-USPS beneficiaries."
Date:
July 10, 2013
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Elder Justice: More Federal Coordination and Public Awareness Needed
A letter report issued by the Government Accountability Office with an abstract that begins "In fiscal year 2011, two agencies--the Departments of Health and Human Services (HHS) and Justice (Justice) --separately administered 12 fragmented but minimally overlapping programs that directed funds toward elder justice, with low risk of duplication. Specifically, because more than one federal agency administers these programs, GAO found that these grant programs are fragmented. Further, GAO found that overlap across the 12 programs was minimal because the programs varied with respect to (1) funding mechanisms and recipients, (2) elder abuse victims targeted, (3) service providers, and (4) activities conducted. For example, a few of these programs provided formula grants to all states and most dispersed discretionary grants to a limited number of recipients. Programs that supported victims of elder abuse generally assisted all types of victims, but some also focused on certain subgroups, such as older women. Some programs that assisted service providers also targeted specific subgroups, such as judges and court personnel. In addition, elder justice programs supported a wide range of activities. For example, one HHS program provided public education to help identify and prevent elder abuse, while a Justice program trained law enforcement officers …
Date:
July 10, 2013
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Delphi Bankruptcy: Termination of Delphi Pension Plans
Testimony issued by the Government Accountability Office with an abstract that begins "The termination of the six defined benefit plans the Delphi Corporation (Delphi) sponsored, and the provision of benefit protections to some Delphi employees but not others, culminated from a complex series of events involving Delphi, the General Motors Corporation (GM), various unions, the U.S. Department of the Treasury (Treasury), and the Pension Benefit Guaranty Corporation (PBGC). When Delphi spun off from GM in 1999, three unions secured an agreement that GM would provide a retirement benefit supplement (referred to as "top-ups") for their members should their pension plans be frozen or terminated and they were to suffer a resulting loss in pension benefits. These three unions were: (1) the International Union, United Automobile, Aerospace, and Agricultural Implement Workers of America (UAW); (2) the International Union of Electronic, Electrical, Salaried, Machine and Furniture Workers, AFL-CIO (IUE); and (3) the United Steelworkers of America (USWA). No other Delphi employees had a similar agreement to receive a top-up, including salaried workers and hourly workers belonging to other unions. Over the course of events that unfolded over the next decade, the agreements with these three unions ultimately were preserved through the resolution …
Date:
July 10, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
National Science Foundation: Status of the Business Analysis Plan Contract
Correspondence issued by the General Accounting Office with an abstract that begins "In June 2002, the National Science Foundation (NSF) awarded a 3-year, $14.8 million contract for a business analysis plan to support three key management areas at the foundation: its business processes, human capital, and information technology. The contract is to be completed by September 30, 2005, and is to result in seven deliverables, including a project plan to guide the contractor's work. The Chairman, Senate Committee on Appropriations, Subcommittee on VA, HUD, and Independent Agencies, asked us to obtain information on (1) the status of contract funds budgeted to the key management areas and contract deliverables, and overall plans for the contract; (2) the extent to which the contract will address management issues previously reported by audit and oversight bodies; and (3) NSF's management of the contract and plans for integrating any recommendations made by the contractor."
Date:
July 10, 2003
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library