ADVANCED CERAMIC MATERIALS FOR NEXT-GENERATION NUCLEAR APPLICATIONS (open access)

ADVANCED CERAMIC MATERIALS FOR NEXT-GENERATION NUCLEAR APPLICATIONS

Rising global energy demands coupled with increased environmental concerns point to one solution; they must reduce their dependence on fossil fuels that emit greenhouse gases. As the global community faces the challenge of maintaining sovereign nation security, reducing greenhouse gases, and addressing climate change nuclear power will play a significant and likely growing role. In the US, nuclear energy already provides approximately one-fifth of the electricity used to power factories, offices, homes, and schools with 104 operating nuclear power plants, located at 65 sites in 31 states. Additionally, 19 utilities have applied to the US Nuclear Regulatory Commission (NRC) for construction and operating licenses for 26 new reactors at 17 sites. This planned growth of nuclear power is occurring worldwide and has been termed the 'nuclear renaissance.' As major industrial nations craft their energy future, there are several important factors that must be considered about nuclear energy: (1) it has been proven over the last 40 years to be safe, reliable and affordable (good for Economic Security); (2) its technology and fuel can be domestically produced or obtained from allied nations (good for Energy Security); and (3) it is nearly free of greenhouse gas emissions (good for Environmental Security). Already …
Date: September 29, 2010
Creator: Marra, J.
Object Type: Article
System: The UNT Digital Library
ALTERNATIVE AND ENHANCED CHEMICAL CLEANING: CORROSION STUDIES RESULTS: FY2010 (open access)

ALTERNATIVE AND ENHANCED CHEMICAL CLEANING: CORROSION STUDIES RESULTS: FY2010

Due to the need to close High Level Waste storage tanks, chemical cleaning methods are needed for the removal of sludge heel materials remaining at the completion of mechanical tank cleaning efforts. Oxalic acid is considered the preferred cleaning reagent for heel dissolution of iron-based sludge. However, the large quantity of chemical reagents added to the tank farm from oxalic acid based cleaning has significant downstream impacts. Optimization of the oxalic acid cleaning process can potentially reduce the downstream impacts from chemical cleaning. To optimize oxalic acid usage, a detailed understanding of the chemistry of oxalic acid based sludge dissolution is required. Additionally, other acidic systems may be required for specific waste components that have low solubility in oxalic acid, and as a means to reduce oxalic acid usage in general. Electrochemical corrosion studies were conducted with 1 wt. % oxalic acid at mineral acid concentrations above and below the optimal conditions for this oxalic acid concentration. Testing environments included pure reagents, pure iron and aluminum phases, and sludge simulants. Mineral acid concentrations greater than 0.2 M and temperatures greater than 50 C result in unacceptably high corrosion rates. Results showed that manageable corrosion rates of carbon steel can be …
Date: September 29, 2010
Creator: Wiersma, B.
Object Type: Report
System: The UNT Digital Library
Army Corps of Engineers Water Resource Projects: Authorization and Appropriations (open access)

Army Corps of Engineers Water Resource Projects: Authorization and Appropriations

The U.S. Army Corps of Engineers attracts congressional attention because its projects can have significant local and regional economic benefits and environmental effects, in addition to their water resource development purposes. This report provides an overview of the Corps civil works program. It covers the congressional authorization and appropriation process, the standard project development process, and other Corps activities and authorities. It also includes an Appendix on the evolution of Corps civil works missions and authorities and a description of the limits on the Corps' role in levee accreditation and improvements for the National Flood Insurance Program (NFIP).
Date: September 29, 2010
Creator: Carter, Nicole T. & Stern, Charles V.
Object Type: Report
System: The UNT Digital Library
Bahrain: Reform, Security, and U.S. Policy (open access)

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. This report focuses particularly on Bahrain's relationship with Iran and Bahrain's relationship with the United States.
Date: September 29, 2010
Creator: Katzman, Kenneth
Object Type: Report
System: The UNT Digital Library
Coast Guard Deepwater Acquisition Programs: Background, Oversight Issues, and Options for Congress (open access)

Coast Guard Deepwater Acquisition Programs: Background, Oversight Issues, and Options for Congress

The term Deepwater refers to a collection of more than a dozen Coast Guard acquisition programs for replacing and modernizing the service's aging fleet of deepwater-capable ships and aircraft. Currently, there are plans to increase and enhance the Coast Guard's fleet through the Deepwater acquisition program. This report details the Coast Guard's budget requests and explains how the Coast Guard has improved its organization and management over the past several years.
Date: September 29, 2010
Creator: O'Rourke, Ronald
Object Type: Report
System: The UNT Digital Library
Coast Guard Polar Icebreaker Modernization: Background, Issues, and Options for Congress (open access)

Coast Guard Polar Icebreaker Modernization: Background, Issues, and Options for Congress

Coast Guard polar icebreakers perform a variety of missions supporting U.S. interests in polar regions. The Coast Guard's two heavy polar icebreakers - Polar Star and Polar Sea - have exceeded their intended 30-year service lives. Following a decision to design and build one or more new polar icebreakers, the first replacement polar icebreaker might enter service in eight to 10 years, by which time Polar Star and Polar Sea could be more than 40 years old. The issue for Congress is whether to approve, reject, or modify Coast Guard plans for modernizing its polar icebreakers. Congressional decisions on this issue could affect the Coast Guard's ability to perform its polar missions, Coast Guard funding requirements, and the U.S. shipbuilding industrial base.
Date: September 29, 2010
Creator: O'Rourke, Ronald
Object Type: Report
System: The UNT Digital Library
Coastal Zone Management: Background and Reauthorization Issues (open access)

Coastal Zone Management: Background and Reauthorization Issues

This report contains background information on the coastal zone management. This report also lists the reauthorization issues of the Coastal Zone Management Act (CZMA).
Date: September 29, 2010
Creator: Upton, Harold F.
Object Type: Report
System: The UNT Digital Library
Decontamination of Zircaloy Cladding Hulls From Spent Nuclear Fuel (open access)

Decontamination of Zircaloy Cladding Hulls From Spent Nuclear Fuel

The feasibility of decontaminating spent fuel cladding hulls using hydrofluoric acid (HF) was investigated as part of the Global Energy Nuclear Partnership (GNEP) Separations Campaign. The concentrations of the fission product and transuranic (TRU) isotopes in the decontaminated hulls were compared to the limits for determining the low level waste (LLW) classification in the United States (US). The {sup 90}Sr and {sup 137}Cs concentrations met the disposal criteria for a Class C LLW; although, in a number of experiments the criteria for disposal as a Class B LLW were met. The TRU concentration in the hulls generally exceeded the Class C LLW limit by at least an order of magnitude. The concentration decreased sharply as the initial 30-40 {micro}m of the cladding hull surface were removed. At depths beyond this point, the TRU activity remained relatively constant, well above the Class C limit. Reprocessing of spent nuclear fuel generates a cladding waste which would likely require disposal as a Greater than Class C LLW in the US. If the cladding hulls could be treated to remove a majority of the actinide and fission product contamination, the hulls could potentially meet acceptance criteria for disposal as a LLW or allow recycle …
Date: September 29, 2010
Creator: Rudisill, T.
Object Type: Article
System: The UNT Digital Library
Defense Infrastructure: Department of Defense's Energy Supplemental Report (open access)

Defense Infrastructure: Department of Defense's Energy Supplemental Report

Correspondence issued by the Government Accountability Office with an abstract that begins "This letter formally transmits our response to section 332 of the National Defense Authorization Act (NDAA) for Fiscal Year 2010. Section 332 of the NDAA for Fiscal Year 2010 expanded the Department of Defense's (DOD) annual reporting requirements under 10 U.S.C. 2925(a), regarding DOD's energy efficiency programs. Additionally, section 332(b) states that the first report submitted by the Secretary of Defense under 10 U.S.C. 2925(a) after the date of enactment of the NDAA for Fiscal Year 2010 shall include information on eight specific issues, in addition to the matters required under the revised 10 U.S.C. 2925(a). Section 332(c) requires the Comptroller General to review that supplemental report."
Date: September 29, 2010
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Department of Defense: Financial Management Improvement and Audit Readiness Efforts Continue to Evolve (open access)

Department of Defense: Financial Management Improvement and Audit Readiness Efforts Continue to Evolve

Testimony issued by the Government Accountability Office with an abstract that begins "As one of the largest and most complex organizations in the world, the Department of Defense (DOD) faces many challenges in resolving its pervasive and long-standing financial management and related business operations and systems problems. DOD is required by various statutes to (1) improve its financial management processes, controls, and systems to ensure that complete, reliable, consistent, and timely information is prepared and responsive to the financial information needs of agency management and oversight bodies, and (2) produce audited financial statements. DOD has initiated numerous efforts over the years to improve the department's financial management operations and ultimately achieve unqualified (clean) opinions on the reliability of reported financial information. The Subcommittee has asked GAO to provide its perspective on DOD's current efforts to address its financial management weaknesses and achieve auditability, including the status of its Enterprise Resource Planning (ERP) system implementations. GAO's testimony is based on its prior work related to DOD's financial improvement and audit readiness strategy and related activities, including its ERP implementation efforts."
Date: September 29, 2010
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Energy-Efficiency Improvement Opportunities for the Textile Industry (open access)

Energy-Efficiency Improvement Opportunities for the Textile Industry

The textile industry is one of the most complicated manufacturing industries because it is a fragmented and heterogeneous sector dominated by small and medium enterprises (SMEs). Energy is one of the main cost factors in the textile industry. Especially in times of high energy price volatility, improving energy efficiency should be a primary concern for textile plants. There are various energy-efficiency opportunities that exist in every textile plant, many of which are cost-effective. However, even cost-effective options often are not implemented in textile plants mostly because of limited information on how to implement energy-efficiency measures, especially given the fact that a majority of textile plants are categorized as SMEs and hence they have limited resources to acquire this information. Know-how on energy-efficiency technologies and practices should, therefore, be prepared and disseminated to textile plants. This guidebook provides information on energy-efficiency technologies and measures applicable to the textile industry. The guidebook includes case studies from textile plants around the world and includes energy savings and cost information when available. First, the guidebook gives a brief overview of the textile industry around the world, with an explanation of major textile processes. An analysis of the type and the share of energy used …
Date: September 29, 2010
Creator: Group, China Energy & Hasanbeigi, Ali
Object Type: Report
System: The UNT Digital Library
Evaluation of Conservation Voltage Reduction (CVR) on a National Level (open access)

Evaluation of Conservation Voltage Reduction (CVR) on a National Level

Conservation Voltage Reduction (CVR) is a reduction of energy consumption resulting from a reduction of feeder voltage. While there have been numerous CVR systems deployed in North America there has been little substantive analytic analysis of the effect; the majority of the published results are based on empirical field measurements. Since these results are based on empirical measurements it is difficult to extrapolate how this technology will behave on the various types of distribution feeders found throughout the nation. This report has utilized the Taxonomy of Prototypical feeder developed under the Modern Grid Initiative (MGI), now the Modern Grid Strategy (MGS), in order to estimate the benefits of CVR on multiple distribution feeder types. This information will then be used to determine an estimate of the national benefits of a wide scale deployment of CVR.
Date: September 29, 2010
Creator: Schneider, Kevin P.; Fuller, Jason C.; Tuffner, Francis K. & Singh, Ruchi
Object Type: Report
System: The UNT Digital Library
Export Promotion: Observations on the Export-Import Bank's Efforts to Achieve U.S. Policy Goals (open access)

Export Promotion: Observations on the Export-Import Bank's Efforts to Achieve U.S. Policy Goals

Testimony issued by the Government Accountability Office with an abstract that begins "This testimony discusses the role of the U.S. Export-Import Bank (Ex-Im) in promoting exports and achieving other U.S. policy goals. As Congress considers policies to achieve more robust growth in the U.S. economy, it must consider the full range of tools available to further growth and create new jobs for U.S. workers. Some of these tools are related to promoting exports, which can have broad benefits to the U.S. economy. As the official export credit agency of the United States, Ex-Im has a key role in helping many U.S. firms achieve sales in foreign markets. In addition to establishing Ex-Im's broad mandate of supporting U.S. employment through exports, Congress has laid out specific, targeted goals for the bank in areas such as increasing financing for environmentally beneficial exports and expanding services to small and minority-owned businesses. This testimony provides some broad observations regarding Ex-Im's contribution to the export promotion goals announced in the President's National Export Initiative. It also describes progress Ex-Im has made in achieving the specific targets set by Congress, as well as some challenges the bank faces in meeting those targets. The statement also provides …
Date: September 29, 2010
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Federal Courthouse Construction: Better Planning, Oversight, and Courtroom Sharing Needed to Address Future Costs (open access)

Federal Courthouse Construction: Better Planning, Oversight, and Courtroom Sharing Needed to Address Future Costs

Testimony issued by the Government Accountability Office with an abstract that begins "The federal judiciary (judiciary) and the General Services Administration (GSA) are in the midst of a multi-billion dollar courthouse construction initiative, which has faced rising construction costs. For 33 federal courthouses completed since 2000, GAO examined (1) whether they contained extra space and any costs related to it; (2) how their actual size compares with the congressionally authorized size; (3) how their space based on the judiciary's 10-year estimates of judges compares with the actual number of judges; and (4) whether the level of courtroom sharing supported by the judiciary's data could have changed the amount of space needed in these courthouses. This testimony is based on GAO's June 2010 report; for that report, GAO analyzed courthouse planning and use data, visited courthouses, modeled courtroom sharing scenarios, and interviewed judges, GSA officials, and others."
Date: September 29, 2010
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Federal Register, Volume 75, Number 188, September 29, 2010, Pages 59933-60284 (open access)

Federal Register, Volume 75, Number 188, September 29, 2010, Pages 59933-60284

Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.
Date: September 29, 2010
Creator: United States. Office of the Federal Register.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
Information Sharing: Federal Agencies Are Helping Fusion Centers Build and Sustain Capabilities and Protect Privacy, but Could Better Measure Results (open access)

Information Sharing: Federal Agencies Are Helping Fusion Centers Build and Sustain Capabilities and Protect Privacy, but Could Better Measure Results

A letter report issued by the Government Accountability Office with an abstract that begins "Recent terrorist activity, such as the attempted Times Square bombing, underscores the need for terrorism-related information sharing. Since 2001, all 50 states and some local governments have established fusion centers, where homeland security, terrorism, and other intelligence information is shared. The federal government recognizes the importance of fusion centers; however, as GAO reported in October 2007, centers face challenges in sustaining their operations. GAO was asked to assess the extent to which (1) the Department of Homeland Security (DHS) has taken action to support fusion centers' efforts to maintain and grow their operations, and (2) DHS and the Department of Justice (DOJ) have supported fusion centers in establishing privacy and civil liberties protections. GAO reviewed relevant legislation and federal guidance; conducted interviews with 14 of 72 fusion centers, selected on the basis of location and time in operation, among other factors; and interviewed DHS and DOJ officials. The views of fusion center officials are not generalizable but provided insights"
Date: September 29, 2010
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Marine Protected Areas: An Overview (open access)

Marine Protected Areas: An Overview

Marine protected areas (MPAs) are generally defined as areas reserved by law or other effective means to protect part or all of the enclosed environment. This report identifies a number of issues related to establishing MPAs in the United States. It begins by defining the concept and administrative actions taken to provide spatial protection in marine areas. It then considers some of the key issues and potential benefits and costs of designating additional MPAs. It concludes by considering potential areas of congressional interest for the 111th Congress. Existing federal laws related to the use of MPAs are summarized in the Appendix.
Date: September 29, 2010
Creator: Upton, Harold E. & Buck, Eugene H.
Object Type: Report
System: The UNT Digital Library
Nanotechnology and Environmental, Health, and Safety: Issues for Consideration (open access)

Nanotechnology and Environmental, Health, and Safety: Issues for Consideration

None
Date: September 29, 2010
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Navy Nuclear Aircraft Carrier (CVN) Homeporting at Mayport: Background and Issues for Congress (open access)

Navy Nuclear Aircraft Carrier (CVN) Homeporting at Mayport: Background and Issues for Congress

On January 14, 2009, the Navy announced that it wants to transfer one of its nuclear-powered aircraft carriers (CVNs) to the Navy home port at Mayport, FL, known formally as Naval Station (NAVSTA) Mayport. The Navy's proposed FY2010 budget requests $46.3 million in Military Construction (MilCon) funding for channel dredging at Mayport. The Navy states that a key reason it wants to transfer a CVN to Mayport is to hedge against the risk of a catastrophic event that could damage the Navy's CVN homeporting facilities at Norfolk, VA, and nearby Newport News, VA. This report discusses potential questions for Congress to consider related to budget appropriations for such a transfer, the potential negative economic effects that a CVN transfer would have on the local homeport, and the other general questions regarding the Navy.
Date: September 29, 2010
Creator: O'Rourke, Ronald
Object Type: Report
System: The UNT Digital Library
Navy Nuclear-Powered Surface Ships: Background, Issues, and Options for Congress (open access)

Navy Nuclear-Powered Surface Ships: Background, Issues, and Options for Congress

This report discusses the possibility of increasing the number of Navy surface ships powered by nuclear energy, including the Navy's planned CG(X) cruiser. The report explores a 2006 Navy study that discusses budget considerations, the cost of a nuclear-powered ship compared to a ship powered by crude oil, and other suggestions relating to this proposed expansion. The overall report has a specific emphasis on the planned CG(X) cruiser, and how the implementation of this cruiser may be delayed by current budget proposals.
Date: September 29, 2010
Creator: O'Rourke, Ronald
Object Type: Report
System: The UNT Digital Library
North Korea: Legislative Basis for U.S. Economic Sanctions (open access)

North Korea: Legislative Basis for U.S. Economic Sanctions

This report discusses the economic sanctions the United States imposes on North Korea for activities related to weapons proliferation, destabilizing the region, anti-terrorism, and undemocratic governance.
Date: September 29, 2010
Creator: Rennack, Dianne E.
Object Type: Report
System: The UNT Digital Library
Participants in SBA's Microloan Program Could Provide Additional Information to Enhance the Public's Understanding of Recovery Act Fund Uses and Expected Outcomes (open access)

Participants in SBA's Microloan Program Could Provide Additional Information to Enhance the Public's Understanding of Recovery Act Fund Uses and Expected Outcomes

Correspondence issued by the Government Accountability Office with an abstract that begins "This letter formally transmits and summarizes an oral briefing we gave on July 29, 2010, in response to Congress' request that we assess the extent to which the descriptions of the uses of American Recovery and Reinvestment Act of 2009 (Recovery Act) funds--published on Recovery.gov--enhance the public's understanding of how funds are being spent and what outcomes are expected. Our briefing focused on activities funded through the Small Business Administration (SBA). The Recovery Act, enacted in response to the economic crisis facing the nation, appropriated a total of $275 billion in funding for distribution by federal departments and agencies through contracts, grants, and loans. The Recovery Act contains numerous provisions to increase transparency and accountability over spending. Accordingly, Congress and the administration have emphasized the need for accountability and transparency in the expenditure of Recovery Act funds. In particular, Section 1512 of the act requires nonfederal recipients of Recovery Act funds through grants, contracts, or loans to provide quarterly reports containing certain information. For example, nonfederal recipients are required to report information on each project or activity, including descriptive information on the uses of Recovery Act awards. The …
Date: September 29, 2010
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Plasticity and Failure in Nanocrystalline BCC Metals via Molecular Dynamics Simulation (open access)

Plasticity and Failure in Nanocrystalline BCC Metals via Molecular Dynamics Simulation

Advances in the ability to generate extremely high pressures in dynamic experiments such as at the National Ignition Facility has motivated the need for special materials optimized for those conditions as well as ways to probe the response of these materials as they are deformed. We need to develop a much deeper understanding of the behavior of materials subjected to high pressure, especially the effect of rate at the extremely high rates encountered in those experiments. Here we use large-scale molecular dynamics (MD) simulations of the high-rate deformation of nanocrystalline tantalum at pressures less than 100 GPa to investigate the processes associated with plastic deformation for strains up to 100%. We focus on 3D polycrystalline systems with typical grain sizes of 10-20 nm. We also study a rapidly quenched liquid (amorphous solid) tantalum. We apply a constant volume (isochoric), constant temperature (isothermal) shear deformation over a range of strain rates, and compute the resulting stress-strain curves to large strains for both uniaxial and biaxial compression. We study the rate dependence and identify plastic deformation mechanisms. The identification of the mechanisms is facilitated through a novel technique that computes the local grain orientation, returning it as a quaternion for each atom. …
Date: September 29, 2010
Creator: Rudd, R E
Object Type: Article
System: The UNT Digital Library
Previewing the Next Farm Bill: Unfunded and Early-Expiring Provisions (open access)

Previewing the Next Farm Bill: Unfunded and Early-Expiring Provisions

None
Date: September 29, 2010
Creator: unknown
Object Type: Report
System: The UNT Digital Library