Resource Type

ANALYSIS OF THE SALT FEED TANK CORE SAMPLE (open access)

ANALYSIS OF THE SALT FEED TANK CORE SAMPLE

The Saltstone Production Facility (SPF) immobilizes and disposes of low-level radioactive and hazardous liquid waste (salt solution) remaining from the processing of radioactive material at the Savannah River Site (SRS). Low-level waste (LLW) streams from processes at SRS are stored in Tank 50 until the LLW can be transferred to the SPF for treatment and disposal. The Salt Feed Tank (SFT) at the Saltstone Production Facility (SPF) holds approximately 6500 gallons of low level waste from Tank 50 as well as drain water returned from the Saltstone Disposal Facility (SDF) vaults. Over the past several years, Saltstone Engineering has noted the accumulation of solids in the SFT. The solids are causing issues with pump performance, agitator performance, density/level monitoring, as well as taking up volume in the tank. The tank has been sounded at the same location multiple times to determine the level of the solids. The readings have been 12, 25 and 15 inches. The SFT is 8.5 feet high and 12 feet in diameter, therefore the solids account for approximately 10 % of the tank volume. Saltstone Engineering has unsuccessfully attempted to obtain scrape samples of the solids for analysis. As a result, Savannah River National Laboratory (SRNL) …
Date: January 26, 2012
Creator: Reigel, M. & Cheng, W.
System: The UNT Digital Library
The Debt Limit: History and Recent Increases (open access)

The Debt Limit: History and Recent Increases

This report gives an overview of the federal debt limit, its history, and recent increases
Date: January 26, 2012
Creator: Austin, D. Andrew & Levit, Mindy R.
System: The UNT Digital Library
European Union Enlargement (open access)

European Union Enlargement

This report discusses the status of European Union (EU) enlargement and its implications for both the EU itself and U.S.-EU relations. It includes a history of the European Union, the process of enlargement, overviews of current EU candidates, prospects for future enlargements, and U.S. perspectives.
Date: January 26, 2012
Creator: Archick, Kristin
System: The UNT Digital Library
Federal Research and Development Funding: FY2012 (open access)

Federal Research and Development Funding: FY2012

President Obama has requested $147.911 billion for research and development (R&D) in FY2012, a $772 million (0.5%) increase from the FY2010 actual R&D funding level of $147.139 billion. Congress will play a central role in defining the nation's R&D priorities, especially with respect to two overarching issues: the extent to which the federal R&D investment can grow in the context of increased pressure on discretionary spending and how available funding will be prioritized and allocated. Low or negative growth in the overall R&D investment may require movement of resources across disciplines, programs, or agencies to address priorities.
Date: January 26, 2012
Creator: Sargent, John F., Jr.
System: The UNT Digital Library
Federal Support for Academic Research (open access)

Federal Support for Academic Research

Report that discusses how to address the issue of budget reductions while supporting research conducted at colleges and universities, due to the role of academic research on the economy.
Date: January 26, 2012
Creator: Matthews, Christine M.
System: The UNT Digital Library
Iran Sanctions (open access)

Iran Sanctions

This report gives an overview of the U.S. sanctions in place on Iran and legislation that would enhance both the economic sanctions and human rights-related provisions of CISADA and other laws. It also discusses the measures that the United Nations and others have enacted against Iran and the effects of the sanctions.
Date: January 26, 2012
Creator: Katzman, Kenneth
System: The UNT Digital Library
Keystone XL Pipeline Project: Key Issues (open access)

Keystone XL Pipeline Project: Key Issues

This report describes the Keystone XL pipeline proposal and the process required for federal approval. It summarizes key arguments for and against the pipeline put forth by the pipeline's developers, federal agencies, environmental groups, and other stakeholders. The report discusses potential consistency challenges faced by the State Department in reviewing the pipeline application given its recent prior approvals of similar pipeline projects. Finally, the report reviews the constitutional basis for the State Department's authority to issue a Presidential Permit, and opponents' possible challenges to this authority.
Date: January 26, 2012
Creator: Parfomak, Paul W.; Nerurkar, Neelesh; Luther, Linda & Vann, Adam
System: The UNT Digital Library
Liquid Tin Anode Direct Coal Fuel Cell Final Program Report (open access)

Liquid Tin Anode Direct Coal Fuel Cell Final Program Report

This SBIR program will result in improved LTA cell technology which is the fundamental building block of the Direct Coal ECL concept. As described below, ECL can make enormous efficiency and cost contributions to utility scale coal power. This program will improve LTA cells for small scale power generation. As described in the Commercialization section, there are important intermediate military and commercial markets for LTA generators that will provide an important bridge to the coal power application. The specific technical information from this program relating to YSZ electrolyte durability will be broadly applicable SOFC developers working on coal based SOFC generally. This is an area about which very little is currently known and will be critical for successfully applying fuel cells to coal power generation.
Date: January 26, 2012
Creator: Tao, Thomas
System: The UNT Digital Library
Postsecondary Education: Financial Trends in Public and Private Nonprofit Institutions (open access)

Postsecondary Education: Financial Trends in Public and Private Nonprofit Institutions

A letter report issued by the Government Accountability Office with an abstract that begins "For fiscal years 1999 through 2009, both public and private nonprofit schools increasingly relied on tuition revenues when compared with other sources of revenue. Net tuition and fees—revenues received after subtracting institutional aid provided to students—climbed from 16 to 22 percent of total revenue at public schools, and from 29 to 40 percent at private nonprofit schools. According to four schools GAO interviewed, increased reliance on tuition revenue is partly a result of significant decreases in state and local appropriations and other revenue sources, such as endowment income. Analysis of Education data shows nearly all types of public and private nonprofit schools saw decreases in state and local appropriations ranging from 6 to 65 percent, as well as decreases in other revenues, ranging from 13 to 75 percent. In response to these declines, schools that GAO visited pursued additional revenue from out-of-state and, in some cases, international students, government funded research, and fund-raising."
Date: January 26, 2012
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Terahertz Radiation from a Pipe with Small Corrugations (open access)

Terahertz Radiation from a Pipe with Small Corrugations

We have studied through analytical and numerical methods the use of a relativistic electron bunch to drive a metallic beam pipe with small corrugations for the purpose of generating terahertz radiation. For the case of a pipe with dimensions that do not change along its length, we have shown that - with reasonable parameters - one can generate a narrow-band radiation pulse with frequency {approx}1 THz, and total energy of a few milli-Joules. The pulse length tends to be on the order of tens of picoseconds. We have also shown that, if the pipe radius is tapered along its length, the generated pulse will end up with a frequency chirp; if the pulse is then made to pass through a compressor, its final length can be reduced to a few picoseconds and its peak power increased to 1 GW. We have also shown that wall losses tend to be significant and need to be included in the structure design.
Date: January 26, 2012
Creator: Bane, K. L. F. & Stupakov, G.
System: The UNT Digital Library
POINT 2012: ENDF/B-VII.1 Final Temperature Dependent Cross Section Library (open access)

POINT 2012: ENDF/B-VII.1 Final Temperature Dependent Cross Section Library

This report is one in the series of 'POINT' reports that over the years have presented temperature dependent cross sections for the then current version of ENDF/B [R1]. In each case I have used my personal computer at home and publicly available data and codes: (1) publicly available nuclear data (the current ENDF/B data, available on-line at the National Nuclear Data Center, Brookhaven National Laboratory, http://www.nndc.bnl.gov/) and, (2) publicly available computer codes (the current PREPRO codes, available on-line at the Nuclear Data Section, IAEA, Vienna, Austria, http://www-nds.iaea.or.at/ndspub/endf/prepro/) and, (3) My own personal computer located in my home. I have used these in combination to produce the temperature dependent cross sections used in applications and described in this report. I should mention that today anyone with a personal computer can produce these results: by its very nature I consider this data to be born in the public domain.
Date: February 26, 2012
Creator: Cullen, D E
System: The UNT Digital Library
Preparing Algebraic Multigrid for Exascale (open access)

Preparing Algebraic Multigrid for Exascale

None
Date: February 26, 2012
Creator: Baker, A H; Falgout, R D; Gahvari, H; Gamblin, T; Gropp, W; Kolev, T V et al.
System: The UNT Digital Library
Child Labor in America: History, Policy, and Legislative Issues (open access)

Child Labor in America: History, Policy, and Legislative Issues

The history of child labor in America is long and unsavory. It dates back to the founding of the United States. Traditionally, most children, except for the privileged few, has always worked - either for their parents or for an outside employer. Through the years, however, child labor practices have changed. This report details the history of child labor in American, the Child Labor Under the Fair Labor Standards Act, the re-emergence of the child labor issue in the late 20th century, and child labor initiatives in the 108th-112th Congresses.
Date: March 26, 2012
Creator: Mayer, Gerald
System: The UNT Digital Library
Commerce, Justice, Science, and Related Agencies: FY2013 Appropriations (open access)

Commerce, Justice, Science, and Related Agencies: FY2013 Appropriations

This report will track and describe actions taken by the Administration and Congress to provide FY2013 appropriations for Commerce, Justice, Science, and Related Agencies (CJS) accounts. It also provides an overview of FY2012 appropriations for agencies and bureaus funded as a part of the annual appropriation for CJS.
Date: March 26, 2012
Creator: James, Nathan; Williams, Jennifer D. & Sargent, John F., Jr.
System: The UNT Digital Library
Congressional Oversight of Intelligence: Current Structure and Alternatives (open access)

Congressional Oversight of Intelligence: Current Structure and Alternatives

This report, to be updated as events dictate, describes the current select committees on intelligence; characteristics and a model for a possible joint committee; recent actions by Congress; and obstacles affecting legislative oversight in the field.
Date: March 26, 2012
Creator: Halchin, L. Elaine & Kaiser, Frederick M.
System: The UNT Digital Library
Electrical Core Transformer for Grid Improvement Incorporating Wire Magnetic Components (open access)

Electrical Core Transformer for Grid Improvement Incorporating Wire Magnetic Components

The research reported herein adds to the understanding of oil-immersed distribution transformers by exploring and demonstrating potential improvements in efficiency and cost utilizing the unique Buswell approach wherein the unit is redesigned, replacing magnetic sheet with wire allowing for improvements in configuration and increased simplicity in the build process. Exploration of new designs is a critical component in our drive to assure reduction of energy waste, adequate delivery to the citizenry, and the robustness of U.S. manufacturing. By moving that conversation forward, this exploration adds greatly to our base of knowledge and clearly outlines an important avenue for further exploration. This final report shows several advantages of this new transformer type (outlined in a report signed by all of our collaborating partners and included in this document). Although materials development is required to achieve commercial potential, the clear benefits of the technology if that development were a given is established. Exploration of new transformer types and further work on the Buswell design approach is in the best interest of the public, industry, and the United States. Public benefits accrue from design alternatives that reduce the overall use of energy, but it must be acknowledged that new DOE energy efficiency standards …
Date: March 26, 2012
Creator: Harrie R. Buswell, PhD; Dennis Jacobs, PhD & Meng, Steve
System: The UNT Digital Library
Federal Civil Rights Statutes: A Primer (open access)

Federal Civil Rights Statutes: A Primer

Under federal law, an array of civil rights statutes are available to protect individuals from discrimination. This report provides a brief summary of selected federal civil rights statutes.
Date: March 26, 2012
Creator: Feder, Jody
System: The UNT Digital Library
Forest Service Payments to Counties— Title I of the Federal Forests County Revenue, Schools, and Jobs Act of 2012: Issues for Congress (open access)

Forest Service Payments to Counties— Title I of the Federal Forests County Revenue, Schools, and Jobs Act of 2012: Issues for Congress

None
Date: March 26, 2012
Creator: Gorte, Ross W.; Alexander, Kristina & Corn, M. Lynne
System: The UNT Digital Library
Heritable Genetic Changes in Cells Recovered From Irradiated 3D Tissue Constructs (open access)

Heritable Genetic Changes in Cells Recovered From Irradiated 3D Tissue Constructs

Combining contemporary cytogenetic methods with DNA CGH microarray technology and chromosome flow-sorting increases substantially the ability to resolve exchange breakpoints associated with interstitial deletions and translocations, allowing the consequences of radiation damage to be directly measured at low doses, while also providing valuable insights into molecular mechanisms of misrepair processes that, in turn, identify appropriate biophysical models of risk at low doses. Specific aims apply to cells recovered from 3D tissue constructs of human skin and, for the purpose of comparison, the same cells irradiated in traditional 2D cultures. The project includes research complementary to NASA/HRP space radiation project.
Date: March 26, 2012
Creator: Cornforth, Michael
System: The UNT Digital Library
KC-46 Tanker Aircraft: Acquisition Plans Have Good Features but Contain Schedule Risk (open access)

KC-46 Tanker Aircraft: Acquisition Plans Have Good Features but Contain Schedule Risk

A letter report issued by the Government Accountability Office with an abstract that begins "The KC-46 program has established its acquisition strategy for development and production, including total cost, procurement quantities, and key milestone dates. The program is using a $4.4 billion fixed-price incentive (firm target) development contract that provides contractor incentives to control costs and limits the government’s liability for increased costs over a certain amount. While estimated development costs are currently $900 million higher than the February 2011 contract award amount, the government’s share of these extra costs is limited to about $500 million. The program has identified key performance parameters, but has not yet fully implemented the metrics for tracking their achievement."
Date: March 26, 2012
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Modernizing the Nuclear Security Enterprise: New Plutonium Research Facility at Los Alamos May Not Meet All Mission Needs (open access)

Modernizing the Nuclear Security Enterprise: New Plutonium Research Facility at Los Alamos May Not Meet All Mission Needs

A letter report issued by the Government Accountability Office with an abstract that begins "The estimated cost to construct the CMRR has greatly increased since NNSA’s initial plans, and the project’s schedule has been significantly delayed. According to its most recent estimates prepared in April 2010, NNSA determined that the CMRR will cost between $3.7 billion and $5.8 billion—nearly a six-fold increase from the initial estimate. Construction has also been repeatedly delayed and, in February 2012 after GAO provided its draft report to NNSA for comment, NNSA decided to defer CMRR construction by at least an additional 5 years, bringing the total delay to between 8 and 12 years from NNSA’s original plans. Infrastructure-related design changes and longer-than-expected overall project duration have contributed to these cost increases and delays. GAO’s review of NNSA’s April 2010 cost and schedule estimates for CMRR found that the estimates were generally well prepared, but important weaknesses remain. For example, a high-quality schedule requires a schedule risk analysis that incorporates known risks to predict the level of confidence in meeting a project’s completion date and the amount of contingency time needed to cover unexpected delays. CMRR project officials identified hundreds of risks to the project, …
Date: March 26, 2012
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Multiphase Nano-Composite Coatings for Achieving Energy Optimization (open access)

Multiphase Nano-Composite Coatings for Achieving Energy Optimization

UES Inc. and ANL teamed in this work to develop novel coating systems for the protection of surfaces from thermal degradation mainly in two applications; Machining and Die casting. These coatings were specifically designed for the purpose by incorporating required material phases and the overall architecture, which led to reduce the energy usage and increase efficiency of the operations. Following the UES/ANL'™s feasibility work, the coatings were developed utilizing High power impulse magnetron sputtering (HiPMS) and Large area filtered arc deposition (LAFAD) techniques. Toughness, hardness and oxidation resistance: contrasting qualities have been mixed in the right proportion to attain the suitable material characteristic for the cause. Hafnium diboride (HfB2) based materials provided such a system and its properties were tamed to attain the right combination of toughness and hardness by working on the microstructure and architecture of coatings. An effective interfacing material (graded concentrations of topcoat) was also achieved in this work to provide the required adhesion between the substrate and the coating. Combination of an appropriate bond coat and a functional top coat provided the present thermal degradation resistant coating for cutting tools and die-casting applications. Laboratory level performance tests and industrial level application tests by partner companies (Beta …
Date: March 26, 2012
Creator: Nainaparampil, Dr. Jose
System: The UNT Digital Library
Nevada National Security Site Radiological Control Manual (open access)

Nevada National Security Site Radiological Control Manual

This document supersedes DOE/NV/25946--801, 'Nevada Test Site Radiological Control Manual,' Revision 1 issued in February 2010. Brief Description of Revision: A complete revision to reflect a recent change in name for the NTS; changes in name for some tenant organizations; and to update references to current DOE policies, orders, and guidance documents. Article 237.2 was deleted. Appendix 3B was updated. Article 411.2 was modified. Article 422 was re-written to reflect the wording of DOE O 458.1. Article 431.6.d was modified. The glossary was updated. This manual contains the radiological control requirements to be used for all radiological activities conducted by programs under the purview of the U.S. Department of Energy (DOE) and the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office (NNSA/NSO). Compliance with these requirements will ensure compliance with Title 10 Code of Federal Regulations (CFR) Part 835, 'Occupational Radiation Protection.' Programs covered by this manual are located at the Nevada National Security Site (NNSS); Nellis Air Force Base and North Las Vegas, Nevada; Santa Barbara and Livermore, California; and Andrews Air Force Base, Maryland. In addition, fieldwork by NNSA/NSO at other locations is covered by this manual. Current activities at NNSS include operating low-level radioactive …
Date: March 26, 2012
Creator: Council, Radiological Control Managers’
System: The UNT Digital Library
Plasma Synthesized Doped Boron Nanopowder for MgB2 Superconductors (open access)

Plasma Synthesized Doped Boron Nanopowder for MgB2 Superconductors

Under this program, a process to synthesize nano-sized doped boron powder by a plasma synthesis process was developed and scaled up from 20 gram batches at program start to over 200 grams by program end. Over 75 batches of boron nanopowder were made by RF plasma synthesis. Particle sizes were typically in the 20-200 nm range. The powder was synthesized by the reductive pyrolysis of BCl{sub 3} in hydrogen in an RF plasma. A wide range of process parameters were investigated including plasma power, torch geometry, gas flow rates, and process pressure. The powder-in-tube technique was used to make monofilament and multifilament superconducting wires. MgB{sub 2} wire made with Specialty Materials plasma synthesized boron nanopowder exhibited superconducting properties that significantly exceeded the program goals. Superconducting critical currents, J{sub c}, in excess of 10{sup 5} A cm{sup -2} at magnetic fields of 8 tesla were reproducibly achieved. The upper critical magnetic field in wires fabricated with program boron powder were H{sub c2}(0) = 37 tesla, demonstrating the potential of these materials for high field magnet applications. T{sub c} in carbon-doped MgB{sub 2} powder showed a systematic decrease with increasing carbon precursor gas flows, indicating the plasma synthesis process can give precise …
Date: March 26, 2012
Creator: Marzik, James V.
System: The UNT Digital Library