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Aerosol Absorption and Scattering Measurements: Field Measuremnets and Laboratory Characterizations. (open access)

Aerosol Absorption and Scattering Measurements: Field Measuremnets and Laboratory Characterizations.

The objective of this report is to determine the overall impact of atmospheric aerosols on radioactive balance.
Date: December 14, 2011
Creator: Marley, Nancy A. & Gaffney, Jeffrey S.
System: The UNT Digital Library
Agriculture and Related Agencies: FY2012 Appropriations (open access)

Agriculture and Related Agencies: FY2012 Appropriations

This report considers the Agriculture and Related Agencies appropriations bill. The report compares and contrasts the Senate and House versions of the bill in terms of budgeting.
Date: December 14, 2011
Creator: Monke, Jim
System: The UNT Digital Library
Criticality Safety Analysis on the Mixed Be, Nat-U, and C (Graphite) Reflectors in 55-Gallon Waste Drums and Their Equivalents for HWM Applications (open access)

Criticality Safety Analysis on the Mixed Be, Nat-U, and C (Graphite) Reflectors in 55-Gallon Waste Drums and Their Equivalents for HWM Applications

The objective of this analysis is to develop and establish the technical basis on the criticality safety controls for the storage of mixed beryllium (Be), natural uranium (Nat-U), and carbon (C)/graphite reflectors in 55-gallon waste containers and/or their equivalents in Hazardous Waste Management (HWM) facilities. Based on the criticality safety limits and controls outlined in Section 3.0, the operations involving the use of mixed-reflector drums satisfy the double-contingency principle as required by DOE Order 420.1 and are therefore criticality safe. The mixed-reflector mass limit is 120 grams for each 55-gallon drum or its equivalent. a reflector waiver of 50 grams is allowed for Be, Nat-U, or C/graphite combined. The waived reflectors may be excluded from the reflector mass calculations when determining if a drum is compliant. The mixed-reflector drums are allowed to mix with the typical 55-gallon one-reflector drums with a Pu mass limit of 120 grams. The fissile mass limit for the mixed-reflector container is 65 grams of Pu equivalent each. The corresponding reflector mass limits are 300 grams of Be, and/or 100 kilograms of Nat-U, and/or 110 kilograms of C/graphite for each container. All other unaffected control parameters for the one-reflector containers remain in effect for the mixed-reflector …
Date: December 14, 2011
Creator: Chou, P
System: The UNT Digital Library
Criticality Safety Controls for 55-Gallon Drums with a Mass Limit of 200 grams Pu-239 (open access)

Criticality Safety Controls for 55-Gallon Drums with a Mass Limit of 200 grams Pu-239

The following 200-gram Pu drum criticality safety controls are applicable to RHWM drum storage operations: (1) Mass (Fissile/Pu) - each 55-gallon drum or its equivalent shall be limited to 200 gram Pu or Pu equivalent; (2) Moderation - Hydrogen materials with a hydrogen density greater than that (0.133 g H/cc) of polyethylene and paraffin are not allowed and hydrogen materials with a hydrogen density no greater than that of polyethylene and paraffin are allowed with unlimited amounts; (3) Interaction - a spacing of 30-inches (76 cm) is required between arrays and 200-gram Pu drums shall be placed in arrays for 200-gram Pu drums only (no mingling of 200-gram Pu drums with other drums not meeting the drum controls associated with the 200-gram limit); (4) Reflection - no beryllium and carbon/graphite (other than the 50-gram waiver amount) is allowed, (note that Nat-U exceeding the waiver amount is allowed when its U-235 content is included in the fissile mass limit of 200 grams); and (5) Geometry - drum geometry, only 55-gallon drum or its equivalent shall be used and array geometry, 55-gallon drums are allowed for 2-high stacking. Steel waste boxes may be stacked 3-high if constraint.
Date: December 14, 2011
Creator: Chou, P
System: The UNT Digital Library
Criticality Safety Evaluations on the Use of 200-gram Pu Mass Limit for RHWM Waste Storage Operations (open access)

Criticality Safety Evaluations on the Use of 200-gram Pu Mass Limit for RHWM Waste Storage Operations

This work establishes the criticality safety technical basis to increase the fissile mass limit from 120 grams to 200 grams for Type A 55-gallon drums and their equivalents. Current RHWM fissile mass limit is 120 grams Pu for Type A 55-gallon containers and their equivalent. In order to increase the Type A 55-gallon drum limit to 200 grams, a few additional criticality safety control requirements are needed on moderators, reflectors, and array controls to ensure that the 200-gram Pu drums remain criticality safe with inadvertent criticality remains incredible. The purpose of this work is to analyze the use of 200-gram Pu drum mass limit for waste storage operations in Radioactive and Hazardous Waste Management (RHWM) Facilities. In this evaluation, the criticality safety controls associated with the 200-gram Pu drums are established for the RHWM waste storage operations. With the implementation of these criticality safety controls, the 200-gram Pu waste drum storage operations are demonstrated to be criticality safe and meet the double-contingency-principle requirement per DOE O 420.1.
Date: December 14, 2011
Creator: Chou, P
System: The UNT Digital Library
Final Report for research grant "Development of Methods for High Specific Activity Labeling of Biomolecules Using Astatine-211 in Different Oxidation States" (open access)

Final Report for research grant "Development of Methods for High Specific Activity Labeling of Biomolecules Using Astatine-211 in Different Oxidation States"

The overall objective of this research effort was to develop methods for labeling biomolecules with higher oxidation state species of At-211. This was to be done in an effort to develop reagents that had higher in vivo stability than the present carbon-bonded At-211-labeled compounds. We were unsuccessful in that effort, as none of the approaches studied provided reagents that were stable to in vivo deastatination. However, we gained a lot of information about At-211 in higher oxidation states. The studies proved to be very difficult as small changes in pH and other conditions appeared to change the nature of the species that obtained (by HPLC retention time analyses), with many of the species being unidentifiable. The fact that there are no stable isotopes of astatine, and the chemistry of the nearest halogen iodine is quite different, made it very difficult to interpret results of some experiments. With that said, we believe that a lot of valuable information was obtained from the studies. The research effort evaluated: (1) methods for chemical oxidation of At-211, (2) approaches to chelation of oxidized At-211, and (3) approaches to oxidation of astatophenyl compounds. A major hurdle that had to be surmounted to conduct the research …
Date: December 14, 2011
Creator: Wilbur, D., Scott
System: The UNT Digital Library
Foster Children: HHS Guidance Could Help States Improve Oversight of Psychotropic Prescriptions [Reissued on December 15, 2011] (open access)

Foster Children: HHS Guidance Could Help States Improve Oversight of Psychotropic Prescriptions [Reissued on December 15, 2011]

A letter report issued by the Government Accountability Office with an abstract that begins "What GAO Found"
Date: December 14, 2011
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Identity Theft: Trends and Issues (open access)

Identity Theft: Trends and Issues

This report first provides a brief federal legislative history of identity theft laws.
Date: December 14, 2011
Creator: Finklea, Kristin M.
System: The UNT Digital Library
National Infrastructure Bank: Overview and Current Legislation (open access)

National Infrastructure Bank: Overview and Current Legislation

Several bills to establish a national infrastructure bank have been introduced in the 112th Congress. This report examines three such bills, the Building and Upgrading Infrastructure for Long-Term Development Act (S. 652), the American Infrastructure Investment Fund Act of 2011 (S. 936), and the National Infrastructure Development Bank Act of 2011 (H.R. 402).
Date: December 14, 2011
Creator: Mallett, William J.; Maguire, Steven & Kosar, Kevin R.
System: The UNT Digital Library
The National Telecommunications and Information Administration (NTIA): Policies, Programs, and Funding (open access)

The National Telecommunications and Information Administration (NTIA): Policies, Programs, and Funding

The National Telecommunications and Information Administration (NTIA), an agency of the Department of Commerce, is the executive branch's principal advisory office on domestic and international telecommunications and information policies. Its mandate is to provide greater access for all Americans to telecommunications services, support U.S. attempts to open foreign markets, advise on international telecommunications negotiations, and fund research for new technologies and their applications. NTIA also manages the distribution of funds for several key grant programs.
Date: December 14, 2011
Creator: Moore, Linda K.
System: The UNT Digital Library
Nuclear Nonproliferation: Action Needed to Address NNSA's Program Management and Coordination Challenges (open access)

Nuclear Nonproliferation: Action Needed to Address NNSA's Program Management and Coordination Challenges

A letter report issued by the Government Accountability Office with an abstract that begins "What GAO Found:"
Date: December 14, 2011
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Red Bluff Water Treatment Plant Project Annual Budget: 2012 (open access)

Red Bluff Water Treatment Plant Project Annual Budget: 2012

Annual budget and setting rates adopted by the Coastal Water Authority, for the Red Bluff Water Treatment Plant. it includes resolutions passed by the board of directors, budget summaries, and other related documentation.
Date: December 14, 2011
Creator: Coastal Water Authority (Tex.)
System: The Portal to Texas History
Second Line of Defense Help Desk: Electronic Maintenance Reports - Local Maintenance Provider User Guide Rev. 1 (open access)

Second Line of Defense Help Desk: Electronic Maintenance Reports - Local Maintenance Provider User Guide Rev. 1

The Electronic Maintenance Report forms present a uniform dataset for analysis of Sustainability metrics. These forms collect readily minable data while allowing the attachment of site-specific checklists or other supporting files for review by the Sustainability Manager and Program Management.
Date: December 14, 2011
Creator: Leigh, Richard J.
System: The UNT Digital Library
A Simple Harmonic Universe (open access)

A Simple Harmonic Universe

We explore simple but novel bouncing solutions of general relativity that avoid singularities. These solutions require curvature k = +1, and are supported by a negative cosmological term and matter with -1 < w < -1 = 3. In the case of moderate bounces (where the ratio of the maximal scale factor a{sub +} to the minimal scale factor a{sub -} is {Omicron}(1)), the solutions are shown to be classically stable and cycle through an infinite set of bounces. For more extreme cases with large a{sub +} = a{sub -}, the solutions can still oscillate many times before classical instabilities take them out of the regime of validity of our approximations. In this regime, quantum particle production also leads eventually to a departure from the realm of validity of semiclassical general relativity, likely yielding a singular crunch. We briefly discuss possible applications of these models to realistic cosmology.
Date: December 14, 2011
Creator: Graham, Peter W.; /Stanford U., ITP; Horn, Bart; Kachru, Shamit; /Stanford U., ITP /SLAC; Rajendran, Surjeet et al.
System: The UNT Digital Library
Small Business Lending Fund: Additional Actions Needed to Improve Transparency and Accountability (open access)

Small Business Lending Fund: Additional Actions Needed to Improve Transparency and Accountability

A letter report issued by the Government Accountability Office with an abstract that begins "What GAO Found"
Date: December 14, 2011
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
University of North Texas Investment Audit Report, 2011 (open access)

University of North Texas Investment Audit Report, 2011

Audit report of investments at the University of North Texas (UNT) for fiscal year 2011 includes a summary of the objectives for the internal audit and findings of the auditors. The findings contain information about the background of UNT investments, the audit process, and observations regarding compliance, inventory and safeguarding, reporting, and commercial paper, as well as overall conclusions.
Date: December 14, 2011
Creator: University of North Texas
System: The UNT Digital Library
University of North Texas Investment Audit Report, 2011 (open access)

University of North Texas Investment Audit Report, 2011

Audit report of investments at the University of North Texas (UNT) for fiscal year 2011 includes a summary of the objectives for the internal audit and findings of the auditors. The findings contain information about the background of UNT investments, the audit process, and observations regarding compliance, inventory and safeguarding, reporting, and commercial paper, as well as overall conclusions.
Date: December 14, 2011
Creator: University of North Texas
System: The UNT Digital Library
VA Enhanced Monthly Benefits: Recipient Population Is Changing, and Awareness Could Be Improved (open access)

VA Enhanced Monthly Benefits: Recipient Population Is Changing, and Awareness Could Be Improved

A letter report issued by the Government Accountability Office with an abstract that begins "According to VA data during fiscal years 2000 to 2010, most enhanced monthly benefit recipients were veterans, over age 65, and receiving the A&A enhancement as part of their pension benefit. The recipient population is changing, however. In particular, the percentage of enhanced monthly benefit recipients age 65 or younger increased from 18 percent to 24 percent over the decade. Also, the percentage of recipients paid benefits under the disability compensation program increased from 15 percent to 26 percent. The cost of enhanced monthly benefits has increased from $124 million in fiscal year 2000 to $409 million in fiscal year 2010; however, VA does not know what portion of these costs was paid specifically for A&A and Housebound benefits. VA maintains data on enhanced monthly benefit recipientsÂ’ total payments but does not separately identify the amount awarded as an A&A or Housebound benefit. VA officials stated that under its current system, separately tracking the costs of these benefits would be complicated and difficult."
Date: December 14, 2011
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Waste-to-wheel analysis of anaerobic-digestion-based renewable natural gas pathways with the GREET model. (open access)

Waste-to-wheel analysis of anaerobic-digestion-based renewable natural gas pathways with the GREET model.

In 2009, manure management accounted for 2,356 Gg or 107 billion standard cubic ft of methane (CH{sub 4}) emissions in the United States, equivalent to 0.5% of U.S. natural gas (NG) consumption. Owing to the high global warming potential of methane, capturing and utilizing this methane source could reduce greenhouse gas (GHG) emissions. The extent of that reduction depends on several factors - most notably, how much of this manure-based methane can be captured, how much GHG is produced in the course of converting it to vehicular fuel, and how much GHG was produced by the fossil fuel it might displace. A life-cycle analysis was conducted to quantify these factors and, in so doing, assess the impact of converting methane from animal manure into renewable NG (RNG) and utilizing the gas in vehicles. Several manure-based RNG pathways were characterized in the GREET (Greenhouse gases, Regulated Emissions, and Energy use in Transportation) model, and their fuel-cycle energy use and GHG emissions were compared to petroleum-based pathways as well as to conventional fossil NG pathways. Results show that despite increased total energy use, both fossil fuel use and GHG emissions decline for most RNG pathways as compared with fossil NG and petroleum. …
Date: December 14, 2011
Creator: Han, J.; Mintz, M. & Wang, M. (Energy Systems)
System: The UNT Digital Library