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Method for fabricating a seal between a ceramic and a metal alloy
A method of fabricating a seal between a ceramic and an alloy comprising the steps of prefiring the alloy in an atmosphere with a very low partial pressure of oxygen, firing the assembled alloy and ceramic in air, and gradually cooling the fired assembly to avoid the formation of thermal stress in the ceramic. The method forms a bond between the alloy and the ceramic capable of withstanding the environment of a pressurized water reactor and suitable for use in an electrical conductivity sensitive liquid level transducer.
Date:
July 24, 1981
Creator:
Kelsey, P.V. Jr. & Siegel, W.T.
Object Type:
Patent
System:
The UNT Digital Library
/sup 56/Ni and the light curve of Type I supernova
The explanation of SN Type I by radioactive decay of /sup 56/Ni requires a relatively small value of the transparency function M/sub ej//v/sub 9//sup 2/ = 0.22 in units of M/sub solar/'s and 10/sup 9/ cm s/sup -1/ to explain the light curve. A minimum mass of /sup 56/Ni is required to explain the peak and near peak luminosity. Subsequent radioactive decay energy must escape in some other form than optical light in order to explain the rapid early and late time decay. Early ultraviolet and infrared radiation are excluded as sinks of energy by observations. PdV work is excluded by theory. The energy loss due to the escape of gamma rays and ..beta../sup +/'s with the above value of M/sub ej//v/sub 9//sup 2/ gives good agreement with the light curve after maximum, provided essentially all the trapped energy is converted to optical light. The peak of SN 1972e is explained with the above transparency value M/sub ej//v/sub 9//sup 2/ = 0.22 and mass of /sup 56/Ni of 0.25 M/sub solar/ or 0.4 M/sub solar/, and a distance of 3.2 Mpc or 4 Mpc, respectively. These values depend critically upon the prediscovery report of Austin (1972), and the assumption again …
Date:
July 24, 1980
Creator:
Colgate, S.A. & Petschek, A.G.
Object Type:
Article
System:
The UNT Digital Library
Scale effects in sliding friction: An experimental study
Solid friction is considered by some to be a fundamental property of two contacting materials, while others consider it to be a property of the larger tribosystem in which the materials are contained. A set of sliding friction experiments were designed to investigate the hypothesis that the unlubricated sliding friction between two materials is indeed a tribosystems-related property and that the relative influence of the materials properties or those of the machine on friction varies from one situation to another. Three tribometers were used: a friction microprobe (FMP), a typical laboratory-scale reciprocating pin-on-flat device, and a heavy-duty commercial wear tester. The slider material was stainless steel (AISI 440C) and the flat specimen material was an ordered alloy of Ni{sub 3}Al (IC-50). Sphere-on-flat geometry was used at ambient conditions and at normal forces ranging from 0.01 N to 100 N and average sliding velocities of 0.01 to 100.0 mm/s. The nominal, steady-state sliding friction coefficient tended to decrease with increases in normal force for each of the three tribometers, and the steady state value of sliding friction tended to increase as the mass of the machine increased. The variation of the friction force during sliding was also a characteristic of the …
Date:
July 24, 1991
Creator:
Blau, P.J.
Object Type:
Article
System:
The UNT Digital Library
1A HEAT EXCHANGER LEAK TEST. CORE I, SEED 2. Test Evaluation. Section 2
An investigation was conducted to determine which tubes of the 1A loop heat exchanger are leaking. Air pressure and probing tests are inconclusive and cannot be used to verify chemical sampling. (J.R.D.)
Date:
July 24, 1961
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Coast Guard Cutter Procurement: Background and Issues for Congress
This report provides background information and potential oversight issues for Congress on the Coast Guard's programs for procuring 8 National Security Cutters (NSCs), 25 Offshore Patrol Cutters (OPCs), and 58 Fast Response Cutters (FRCs).
Date:
July 24, 2013
Creator:
O'Rourke, Ronald
Object Type:
Report
System:
The UNT Digital Library
Military Medical Care: Questions and Answers
This report answers several frequently asked questions about military health care, including: how the system is structured, a TRICARE summary, TRICARE eligibility and plan options, cost of military health care to beneficiaries, relationship of TRICARE to MEDICARE, how the Affordable Care Act affects TRICARE, long-term trends of defense health care costs, and a summary of the fund which funds TRICARE.
Date:
July 24, 2013
Creator:
Jansen, Don J. & Blakeley, Katherine
Object Type:
Report
System:
The UNT Digital Library
Honduras-U.S. Relations
Report that examines current political and economic conditions in Honduras as well as issues in Honduran-U.S. relations.
Date:
July 24, 2013
Creator:
Meyer, Peter J.
Object Type:
Report
System:
The UNT Digital Library
Coast Guard Polar Icebreaker Modernization: Background and Issues for Congress
Report that is written in response to the Coast Guard's budget request for a new polar ice breaker, of which the Coast Guard currently has none in operation. Polar icebreakers perform a variety of missions supporting U.S. interests in polar regions. Issues for Congress include what to do with decommissioned ice breakers, the impact of having no ice breakers, how to budget for new ice breakers, and how future ice breakers should be obtained.
Date:
July 24, 2013
Creator:
O'Rourke, Ronald
Object Type:
Report
System:
The UNT Digital Library
Trafficking in Persons: International Dimensions and Foreign Policy Issues for Congress
Report that explores current foreign policy issues regarding U.S. efforts to combat human trafficking, the interrelationship among existing polices, and the historical and current role of Congress in such efforts.
Date:
July 24, 2013
Creator:
Wyler, Liana Sun
Object Type:
Report
System:
The UNT Digital Library
Cybersecurity: Authoritative Reports and Resources
Report that provides links to selected authoritative resources related to cybersecurity issues, including: legislation, hearings in the 112th Congress, data and statistics, and cybersecurity glossaries.
Date:
July 24, 2012
Creator:
Tehan, Rita
Object Type:
Report
System:
The UNT Digital Library
The 2010 Deepwater Horizon Oil Spill: Natural Resource Damage Assessment Under the Oil Pollution Act
Report that examines the Natural Resources Damage Assessment (NRDA) process under the Oil Pollution Act (OPA) in the context of the Deepwater Horizon spill.
Date:
July 24, 2013
Creator:
Vann, Adam & Meltz, Robert
Object Type:
Report
System:
The UNT Digital Library
U.S.-Cambodia Relations: Issues for the 113th Congress
Report that starts out by describing the relationship between the United States and the Kingdom of Cambodia. This includes U.S. concerns about Cambodia's human rights record and how that affects the bilateral relationship.
Date:
July 24, 2013
Creator:
Lum, Thomas
Object Type:
Report
System:
The UNT Digital Library
The U.S. Postal Service's Financial Condition: A Primer
Report that discusses the USPS financial challenges, agency's revenues, and recent financial difficulties.
Date:
July 24, 2013
Creator:
Kosar, Kevin R.
Object Type:
Report
System:
The UNT Digital Library
Base Visit Book - Naval Station Ingleside
Base Visit Book - Naval Station Ingleside
Date:
July 24, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Book
System:
The UNT Digital Library
Combating Gangs: Better Coordination and Performance Measurement Would Help Clarify Roles of Federal Agencies and Strengthen Assessment of Efforts
A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Justice (DOJ) estimates that the United States has about a million gang members. While state and local agencies have primary responsibility for combating gang crime, the federal government has key roles to enforce laws and help fund programs to provide alternatives to gang membership for at-risk youth. GAO was asked to examine federal efforts to combat gang crime. This report addresses (1) the roles of DOJ and the Department of Homeland Security (DHS) in combating gang crime and the extent to which DOJ and DHS agencies coordinate their efforts with each other and state and local agencies; (2) the extent to which DOJ and DHS measure their gang enforcement efforts; and (3) how federal grant funding is used to administer or support activities to reduce gang-related crime. GAO reviewed federal agencies' plans, resources, and measures and interviewed federal, state, and local officials in 15 localities with federally led anti-gang task forces representing varying population sizes and locations."
Date:
July 24, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Cayman Islands: Business and Tax Advantages Attract U.S. Persons and Enforcement Challenges Exist
A letter report issued by the Government Accountability Office with an abstract that begins "The Cayman Islands is a major offshore financial center and the registered home of thousands of corporations and financial entities. Financial activity in the Cayman Islands is measured in the trillions of dollars annually. One Cayman building--Ugland House--has been the subject of public attention as the listed address of thousands of companies. To help Congress better understand the nature of U.S. persons' business activities in the Cayman Islands, GAO was asked to study (1) the nature and extent of U.S. persons' involvement with Ugland House registered entities and the nature of such business; (2) the reasons why U.S. persons conduct business in the Cayman Islands; (3) information available to the U.S. government regarding U.S. persons' Cayman activities; and (4) the U.S. government's compliance and enforcement efforts. GAO interviewed U.S. and Cayman government officials and representatives of the law firm housed in Ugland House, and reviewed relevant documents."
Date:
July 24, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Highway Public-Private Partnerships: Securing Potential Benefits and Protecting the Public Interest Could Result from More Rigorous Up-front Analysis
Testimony issued by the Government Accountability Office with an abstract that begins "The private sector is increasingly involved in financing and operating highway facilities under long-term concession agreements. In some cases, this involves new facilities; in other cases, firms operate and maintain an existing facility for a period of time in exchange for an up-front payment to the public sector and the right to collect tolls over the term of the agreement. In February 2008 GAO reported on (1) the benefits, costs, and trade-offs of highway public-private partnerships; (2) how public officials have identified and acted to protect the public interest in these arrangements; and (3) the federal role in highway public-private partnerships and potential changes in this role. The Senate Finance Committee asked GAO to testify on this report and to highlight its discussion of tax issues. GAO reviewed the experience of projects in the U.S. (including the Chicago Skyway and Indiana Toll Road agreements), Australia, Canada, and Spain."
Date:
July 24, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Afghanistan Security: Long-standing Challenges May Affect Progress and Sustainment of Afghan National Security Forces
Testimony issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) and the North Atlantic Treaty Organization (NATO) report progress developing capable Afghan National Security Forces (ANSF), but tools used to assess the performance of ANSF units have changed several times. In April 2012, DOD reported progress increasing the number and capability of ANSF, with 7 percent of army units and 9 percent of police units rated at the highest level of capability. GAO has previously found the tools used by DOD and NATO to assess ANSF reliable enough to support broad statements regarding capability. However, issues related to these tools exist. When GAO reported on ANA capability in January 2011, the highest capability rating level was independentmeaning that a unit was capable of executing the full spectrum of its missions without assistance from coalition forces. As of August 2011, the highest level had changed to independent with advisorsmeaning that a unit was capable of executing its mission and can call for coalition forces when necessary. DOD reports, these changes, as well as the elimination of certain requirements for validating units, were partly responsible for the increase in ANSF units rated at the highest …
Date:
July 24, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Federal Protective Service: Preliminary Results on Efforts to Assess Facility Risks and Oversee Contract Guards
Testimony issued by the Government Accountability Office with an abstract that begins "GAOs preliminary results indicate that the Department of Homeland Securitys (DHS) Federal Protective Service (FPS) is not assessing risks at federal facilities in a manner consistent with standards such as the National Infrastructure Protection Plans (NIPP) risk management framework, as FPS originally planned. Instead of conducting risk assessments, since September 2011, FPSs inspectors have collected information, such as the location, purpose, agency contacts, and current countermeasures (e.g., perimeter security, access controls, and closed-circuit television systems). This information notwithstanding, FPS has a backlog of federal facilities that have not been ssessed for several years. According to FPSs data, more than 5,000 facilities were to be assessed in fiscal years 2010 through 2012. However, GAO was not able to determine the extent of FPSs facility security assessment (FSA) backlog because the data were unreliable. Multiple agencies have expended resources to conduct risk assessments, even though they also already pay FPS for this service."
Date:
July 24, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Homelessness: HUD Funds Eligible Projects According to Communities' Priorities
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Department of Housing and Urban Development's (HUD) funding of Stewart B. McKinney Homeless Assistance Act projects, focusing on: (1) what process HUD uses to select projects for funding, whether this process is consistent with relevant statutes, and how HUD treats new projects and projects that have been funded in the past (renewal projects); (2) the extent to which HUD funds projects that communities rank as high-priority under their Continuums of Care, and why some high-priority projects are not funded while some low-priority projects are funded; and (3) whether communities face any common problems when applying for funds from HUD, and what actions are needed to correct these problems."
Date:
July 24, 2000
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Developing Countries: U.S. Financing for Multilateral Debt Relief Initiative Currently Experiencing a Shortfall
Correspondence issued by the Government Accountability Office with an abstract that begins "A buildup of foreign debt throughout the 1970s and 1980s--combined with low growth, falling commodity prices, and other economic difficulties--left many poor countries with significantly more debt than they could repay. International efforts to provide debt relief to 41 such heavily indebted poor countries have been ongoing for over a decade, and these efforts culminated in the Multilateral Debt Relief Initiative (MDRI), which was announced in 2005. MDRI eliminates eligible debt that countries owe to four international financial institutions--the World Bank's International Development Association (IDA), the International Monetary Fund (IMF), the African Development Bank's African Development Fund (ADF), and the Inter-American Development Bank (IaDB). To receive MDRI debt relief, countries must first complete the Heavily Indebted Poor Countries (HIPC) Initiative, which the World Bank and IMF created in 1996 to relieve the debt burden of poor countries. In response to concerns over the continuing vulnerability of these countries, the World Bank and IMF enhanced the initiative to provide additional debt relief in 1999. Recognizing that recipient countries needed further assistance, MDRI was created to help accelerate countries' progress toward achieving the United Nations Millennium Development Goals. Of the …
Date:
July 24, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Student and Exchange Visitor Program: DHS Needs to Take Actions to Strengthen Monitoring of Schools
Testimony issued by the Government Accountability Office with an abstract that begins "In summary, we reported that ICE does not have a process to identify and assess risks posed by schools in SEVP. Specifically, SEVP (1) does not evaluate program data on prior and suspected instances of school fraud and noncompliance, and (2) does not obtain and assess information from CTCEU and ICE field office school investigations and outreach events. Moreover, weaknesses in ICEs monitoring and oversight of SEVP-certified schools contribute to security and fraud vulnerabilities. For example, ICE has not consistently implemented internal control procedures for SEVP in the initial verification of evidence submitted in lieu of accreditation. In addition, ICE has not consistently followed the standard operating procedures that govern the communication and coordination process among SEVP, CTCEU, and ICE field offices. We recommended that ICE, among other things, identify and assess risks posed by schools in SEVP. Specifically, SEVP (1) does not evaluate program data on prior and suspected instances of school fraud and noncompliance, and (2) does not obtain and assess information from CTCEU and ICE field office school investigations and outreach events. Moreover, weaknesses in ICEs monitoring and oversight of SEVP-certified schools contribute to security …
Date:
July 24, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Department of Energy: Observations on DOE's Management Challenges and Steps Taken to Address Them
Testimony issued by the Government Accountability Office with an abstract that begins "As GAO has reported over the last decade, the Department of Energys (DOE) management of major projects and programs, security and safety at DOE sites, and reliable enterprise-wide management information, including budget and cost data, are among the most persistent management challenges the department faces."
Date:
July 24, 2013
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Federal-Aid Highways: FHWA Has Improved Its Risk Management Approach, but Needs to Improve Its Oversight of Project Costs
A letter report issued by the Government Accountability Office with an abstract that begins "The federal-aid highway program provides about $33 billion a year to states for highway projects. The federal government provides funding for and oversees this program, while states largely choose and manage the projects. As requested, GAO reviewed the Federal Highway Administration's (FHWA) implementation of several requirements in the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU): (1) oversight of states using a risk management approach; (2) efforts to develop minimum standards for estimating project costs, and periodically evaluate states' cost estimating practices; and (3) reviews of states' financial management systems. GAO also reviewed FHWA's policy on presenting an estimate of financing costs in financial plans for major projects (i.e., projects estimated to cost over $500 million). GAO reviewed FHWA plans, risk assessments, reviews, and other documents; visited five FHWA field offices and reviewed financial management reviews in an additional five field offices; and interviewed FHWA officials."
Date:
July 24, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library