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FRAMES Software System: Linking to the Statistical Package R (open access)

FRAMES Software System: Linking to the Statistical Package R

This document provides requirements, design, data-file specifications, test plan, and Quality Assurance/Quality Control protocol for the linkage between the statistical package R and the Framework for Risk Analysis in Multimedia Environmental Systems (FRAMES) Versions 1.x and 2.0. The requirements identify the attributes of the system. The design describes how the system will be structured to meet those requirements. The specification presents the specific modifications to FRAMES to meet the requirements and design. The test plan confirms that the basic functionality listed in the requirements (black box testing) actually functions as designed, and QA/QC confirms that the software meets the client’s needs.
Date: December 11, 2006
Creator: Castleton, Karl J.; Whelan, Gene & Hoopes, Bonnie L.
Object Type: Report
System: The UNT Digital Library
The Older Americans Act: Programs, Funding, and 2006 Reauthorization (P.L. 109-365) (open access)

The Older Americans Act: Programs, Funding, and 2006 Reauthorization (P.L. 109-365)

None
Date: December 11, 2006
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Methyl Bromide and Stratospheric Ozone Depletion (open access)

Methyl Bromide and Stratospheric Ozone Depletion

None
Date: December 11, 2006
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Islam: Sunnis and Shiites. December 2006 (open access)

Islam: Sunnis and Shiites. December 2006

This report includes a historical background of the Sunni-Shiite split and discusses the differences in religious beliefs and practices between and within each Islamic sect as well as their similarities.
Date: December 11, 2006
Creator: Blanchard, Christopher M.
Object Type: Report
System: The UNT Digital Library
Sea-Based Ballistic Missile Defense — Background and Issues for Congress (open access)

Sea-Based Ballistic Missile Defense — Background and Issues for Congress

None
Date: December 11, 2006
Creator: unknown
Object Type: Report
System: The UNT Digital Library
China and Proliferation of Weapons of Mass Destruction and Missiles: Policy Issues (open access)

China and Proliferation of Weapons of Mass Destruction and Missiles: Policy Issues

This report discusses the national security problem of China's role in weapons proliferation and issues related to the U.S. policy response, including legislation, since the mid-1990's.
Date: December 11, 2006
Creator: Kan, Shirley A.
Object Type: Report
System: The UNT Digital Library
Development of a Quantum-Limited Microwave Amplifier using a dc Superconducting Quantum Interference Device (dc-SQUID) (open access)

Development of a Quantum-Limited Microwave Amplifier using a dc Superconducting Quantum Interference Device (dc-SQUID)

This report summarizes the research performed on the LDRD project 02-ERD-071 to develop a quantum-limited microwave amplifier based on a dc Superconducting Quantum Interference Device (dc-SQUID). This project began in June 2002 and concluded in May 2005. This project produced the lowest noise temperature amplifiers ever produced, both in absolute terms and in relation to the Standard Quantum Limit. Being an order of magnitude lower in noise than the best HFET devices available, they are of great interest to a number of groups. Potential applications are numerous, from dark-matter searches to national security applications in Quantum Information Processing. Collaborations started during this project are continuing with the goal of single-spin detection using the rf-SET. Publications are forthcoming covering both the experimental results and the theoretical modeling. The most important publication with the noise temperature results will appear after the low frequency follow-up experiment. The other publications in production cover the input impedance measurements and the resulting transmission line models.
Date: December 11, 2006
Creator: Kinion, D.
Object Type: Report
System: The UNT Digital Library
Derivatives, Risk Management, and Policy in the Energy Markets (open access)

Derivatives, Risk Management, and Policy in the Energy Markets

This report provides a systematic guide to understanding the use of financial derivative contracts in the energy industry, focusing specifically on the petroleum and natural gas sectors.
Date: December 11, 2006
Creator: Pirog, Robert
Object Type: Report
System: The UNT Digital Library
National Environmental Education Act of 1990: Overview, Implementation, and Reauthorization Issues (open access)

National Environmental Education Act of 1990: Overview, Implementation, and Reauthorization Issues

This report presents an overview of the National Environmental Education Act of 1990, discusses appropriations, examines the Environmental Protection Agency's (EPA's) implementation of the act, and analyzes reauthorization issues relevant to legislation introduced in recent Congresses.
Date: December 11, 2006
Creator: Bearden, David M.
Object Type: Report
System: The UNT Digital Library
Wetlands: An Overview of Issues (open access)

Wetlands: An Overview of Issues

This report discusses policy topics that involve wetlands. The U.S. Fish and Wildlife Service released its most recent periodic survey of changes in wetland acreage nationwide in March 2006. Covering 1998 to 2004, it concluded that during this time period there was a small net gain in overall wetland acres for the first time that this survey has been conducted. Others caution, however, that much of this gain was in ponds, rather than natural wetlands.
Date: December 11, 2006
Creator: Zinn, Jeffrey A. & Copeland, Claudia
Object Type: Report
System: The UNT Digital Library
FINAL REPORT - Mechanisms of CCl4 Retention and Slow Release in Model Porous Solids and Sediments (open access)

FINAL REPORT - Mechanisms of CCl4 Retention and Slow Release in Model Porous Solids and Sediments

A magnetically coupled microbalance system has been used to measure adsorption and desorption isotherms and rates of desorption for carbon tetrachloride on dry prepared porous silica particles with narrow pore size distributions in the mesoporous range. Pore size distributions estimated from the carbon tetrachloride isotherms were found to be in close agreement with those determined using standard low temperature nitrogen adsorption. Three different types of particles were studied, with average pore diameters of 2.7 nm, 4.6 nm, and 5.9 nm. Prior to desorption rate studies, evacuated particulate samples were charged with volatile organic vapor at pressures sufficient to fill all mesopores with condensed fluid. Desorption rates into dry flowing helium were determined at 25 °C and atmospheric pressure, using the microbalance system combined with chromatographic analysis of the exit helium stream. Initial rates were found to decrease significantly, as mass adsorbed decreased. This residual mass was desorbing at such a low rate, that it can be considered a migration resistant fraction of the original mass adsorbed. Attempts to remove this residual mass at higher temperatures were partially successful; however, differences between the microbalance and gas chromatograph responses leave open uncertainty about whether the residual mass was pure carbon tetrachloride. To …
Date: December 11, 2006
Creator: Miller, Reid C. & Peyton, Brent M.
Object Type: Report
System: The UNT Digital Library
SULFATE RETENTION IN HIGH LEVEL WASTE SLUDGE BATCH 4 GLASSES: A PRELIMINARY ASSESSMENT (open access)

SULFATE RETENTION IN HIGH LEVEL WASTE SLUDGE BATCH 4 GLASSES: A PRELIMINARY ASSESSMENT

Early projections of the Sludge Batch 4 (SB4) composition predicted relatively high concentrations of alumina (Al{sub 2}O{sub 3}, 23.5 wt%) and sulfate (SO{sub 4}{sup 2-}, 1.2 wt%) in the sludge. A high concentration of Al{sub 2}O{sub 3} in the sludge, combined with Na{sub 2}O additions in the frit, raises the potential for nepheline crystallization in the glass. However, strategic frit development efforts at the Savannah River National Laboratory (SRNL) have shown that frits containing a relatively high concentration of B{sub 2}O{sub 3} can both suppress nepheline crystallization and improve melt rates. A high sulfate concentration is a concern to the DWPF as it can lead to the formation of sulfate inclusions in the glass and/or the formation of a molten, sulfate-rich phase atop the melt pool. To avoid these issues, a sulfate concentration limit of 0.4 wt% SO{sub 4}{sup 2-} in glass was originally set in the Product Composition Control System (PCCS) used at DWPF. It was later shown that this limit could be increased to 0.6 wt% SO{sub 4}{sup 2-} in glass for the Frit 418, Sludge Batch 3 (SB3) system.
Date: December 11, 2006
Creator: Fox, K; Tommy Edwards, T & David Peeler, D
Object Type: Report
System: The UNT Digital Library
An Analysis of Shot Noise Propagation and Amplificationin Harmonic Cascade FELs (open access)

An Analysis of Shot Noise Propagation and Amplificationin Harmonic Cascade FELs

The harmonic generation process in a harmonic cascade (HC) FEL is subject to noise degradation which is proportional to the square of the total harmonic order. In this paper, we study the shot noise evolution in the first-stage modulator and radiator of a HC FEL that produces the dominant noise contributions. We derive the effective input noise for a modulator operating in the low-gain regime, and analyze the radiator noise for a density-modulated beam. The significance of these noise sources in different harmonic cascade designs is also discussed.
Date: December 11, 2006
Creator: Huang, Z.
Object Type: Article
System: The UNT Digital Library
Final Report: Caustic Waste-Soil Weathering Reactions and Their Impacts on Trace Contaminant Migration and Sequestration (open access)

Final Report: Caustic Waste-Soil Weathering Reactions and Their Impacts on Trace Contaminant Migration and Sequestration

The principal goal of this project was to assess the molecular nature and stability of radionuclide (137-Cs, 90-Sr, and 129-I) immobilization during weathering reactions in bulk Hanford sediments and their high surface area clay mineral constituents. We focused on the unique aqueous geochemical conditions that are representative of waste-impacted locations in the Hanford site vadose zone: high ionic strength, high pH and high Al concentrations. The specific objectives of the work were to (i) measure the coupling of clay mineral weathering and contaminant uptake kinetics of Cs+, Sr2+ and I-; (ii) determine the molecular structure of contaminant binding sites and their change with weathering time during and after exposure to synthetic tank waste leachate (STWL); (iii) establish the stability of neoformed weathering products and their sequestered contaminants upon exposure of the solids to more “natural” soil solutions (i.e., after removal of the caustic waste source); and (iv) integrate macroscopic, microscopic and spectroscopic data to distinguish labile from non-labile contaminant binding environments, including their dependence on system composition and weathering time. During this funding period, we completed a large set of bench-scale collaborative experiments and product characterization aimed at elucidating the coupling between mineral transformation reactions and contaminant sequestration/stabilization. Our experiments …
Date: December 11, 2006
Creator: O'Day, Peggy A.; Chorover, J.; Mueller, K.T. & Serne, R.J.
Object Type: Report
System: The UNT Digital Library
Status report on high fidelity reactor simulation. (open access)

Status report on high fidelity reactor simulation.

This report presents the effort under way at Argonne National Laboratory toward a comprehensive, integrated computational tool intended mainly for the high-fidelity simulation of sodium-cooled fast reactors. The main activities carried out involved neutronics, thermal hydraulics, coupling strategies, software architecture, and high-performance computing. A new neutronics code, UNIC, is being developed. The first phase involves the application of a spherical harmonics method to a general, unstructured three-dimensional mesh. The method also has been interfaced with a method of characteristics. The spherical harmonics equations were implemented in a stand-alone code that was then used to solve several benchmark problems. For thermal hydraulics, a computational fluid dynamics code called Nek5000, developed in the Mathematics and Computer Science Division for coupled hydrodynamics and heat transfer, has been applied to a single-pin, periodic cell in the wire-wrap geometry typical of advanced burner reactors. Numerical strategies for multiphysics coupling have been considered and higher-accuracy efficient methods proposed to finely simulate coupled neutronic/thermal-hydraulic reactor transients. Initial steps have been taken in order to couple UNIC and Nek5000, and simplified problems have been defined and solved for testing. Furthermore, we have begun developing a lightweight computational framework, based in part on carefully selected open source tools, to …
Date: December 11, 2006
Creator: Palmiotti, G.; Smith, M.; Rabiti, C.; Lewis, E.; Yang, W.; Leclere,M. et al.
Object Type: Report
System: The UNT Digital Library

Perrhenate and Pertechnetate Behavior on Iron and Sulfiur-Bearing Compounds

None
Date: December 11, 2006
Creator: Anderson, B. E.
Object Type: Presentation
System: The UNT Digital Library
In vitro high-resolution structural dynamics of single germinating bacterial spores (open access)

In vitro high-resolution structural dynamics of single germinating bacterial spores

Although significant progress has been achieved in understanding the genetic and biochemical bases of the spore germination process, the structural basis for breaking the dormant spore state remains poorly understood. We have used atomic force microscopy (AFM) to probe the high-resolution structural dynamics of single Bacillus atrophaeus spores germinating under native conditions. Here we show that AFM can reveal previously unrecognized germination-induced alterations in spore coat architecture and topology as well as the disassembly of outer spore coat rodlet structures. These results and previous studies in other microorganisms suggest that the spore coat rodlets are structurally similar to amyloid fibrils. AFM analysis of the nascent surface of the emerging germ cell revealed a porous network of peptidoglycan fibers. The results are consistent with a honeycomb model structure for synthetic peptidoglycan oligomers determined by nuclear magnetic resonance. AFM is a promising experimental tool for investigating the morphogenesis of spore germination and cell wall peptidoglycan structure.
Date: December 11, 2006
Creator: Lawrence Livermore National Laboratory
Object Type: Article
System: The UNT Digital Library
PRETREATMENT OF TC CONTAINING WASTE AND ITS EFFECT ON 99 TC LEACHING FROM GROUTS (open access)

PRETREATMENT OF TC CONTAINING WASTE AND ITS EFFECT ON 99 TC LEACHING FROM GROUTS

A salt solution (doped with Tc-99), that simulates the salt waste stream to be processed at the Saltstone Production Facility, was immobilized in grout waste forms with and without (1) ground granulated blast furnace slag and (2) pretreatment with iron salts. The degree of immobilization of Tc-99 was measured through monolithic and crushed grout leaching tests. Although Fe (+2) was shown to be effective in reducing Tc-99 to the +4 state, the strong reducing nature of the blast furnace slag present in the grout formulation dominated the reduction of Tc-99 in the cured grouts. An effective diffusion coefficient of 4.75 x 10{sup -12} (Leach Index of 11.4) was measured using the ANSI/ANS-16.1 protocol. The leaching results show that, even in the presence of a concentrated salt solution, blast furnace slag can effectively reduce pertechnetate to the immobile +4 oxidation state. The measured diffusivity was introduced into a flow and transport model (PORFLOW) to calculate the release of Tc-99 from a Saltstone Vault as a function of hydraulic conductivity of the matrix.
Date: December 11, 2006
Creator: Harbour, J
Object Type: Article
System: The UNT Digital Library
A Validated High-Let Radiation Specific Biomarker in the Mayak Worker Cohort (open access)

A Validated High-Let Radiation Specific Biomarker in the Mayak Worker Cohort

Our goal (see Project Objectives) is to deliver a dosimetry system which will enable both a Pu body burden of 0.3 kBq, and a 30 cGy {gamma} ray dose, to be separately estimated with a confidence limit of {+-}30%. In terms of the numbers analyzed and the data we have accrued, we have direct quantitative evidence that we are on track to providing such a comprehensive independent dosimetry system for Mayak workers. We had previously demonstrated that intra-chromosomal aberrations measured in peripheral blood lymphocytes can be used as a sensitive long-lived low-background quantitative biomarker of densely-ionizing radiation dose in individuals exposed many years ago. We propose to calibrate the system such that it can be used to estimate both the densely-ionizing internal plutonium exposure and the sparsely-ionizing external exposure in Mayak workers exposed to different combinations of these over a prolonged period, mostly many years ago. Our objective is to deliver a dosimetry system (set of calibration parameters) which will enable both a comparatively low Pu body burden of 0.3 kBq, and a comparatively low 30 cGy {gamma} ray dose (one of these or both of these) to be estimated with a confidence limit of {+-}30% (higher doses will of …
Date: December 11, 2006
Creator: David J. Brenner, Ph.D., D.Sc. & Tamara Azizova, M.D.
Object Type: Report
System: The UNT Digital Library
Comparative Experimental Study of X-Ray Absorption Spectroscopy and Electron Energy Loss Spectroscopy on Passivated U Surfaces (open access)

Comparative Experimental Study of X-Ray Absorption Spectroscopy and Electron Energy Loss Spectroscopy on Passivated U Surfaces

X-ray absorption spectroscopy and electron energy loss spectroscopy are complementary analytical techniques on energy and spatial resolution. These techniques are based on the same fundamental physical process of core excitation with either an incident photon or incident electron. In the proper experimental configuration the electron and photon inelastic scattering amplitudes are comparable and thus the x-ray and electron absorption edges look identical. We have applied these two complementary analytical techniques to investigate the electronic structure of C ion implanted U. Implantation of C{sup +} ions into U{sup 238} has been shown to produce a physically and chemically modified surface layer that passivates the surface preventing further air oxidation and corrosion. Comparison of the resultant spectra reveal that transitions between the initial state and a series of final states yield numerous strong features at the absorption edge that can provide structural information and information on the local chemical environment, including the character of the U 5f state.
Date: December 11, 2006
Creator: Nelson, A.; Moberlychan, W.; Bliss, R. A.; Siekhaus, W.; Felter, T. & Denliner, J.
Object Type: Article
System: The UNT Digital Library
[Funeral Program for Luevene Elizabeth Connor, December 11, 2006] (open access)

[Funeral Program for Luevene Elizabeth Connor, December 11, 2006]

Funeral program for Luevene Elizabeth Connor, born July 19, 1916 and died December 6, 2006. The funeral was held December 11, 2006 at St. Paul United Methodist Church, officiated by Rev. Charles Purnell. The funeral arrangements were made through Lewis Funeral Home and she was buried in Columbus City Cemetery in San Antonio, Texas.
Date: December 11, 2006
Creator: unknown
Object Type: Pamphlet
System: The Portal to Texas History
[Funeral Program for Sheliah Yvette Wilson Haynes, December 11, 2006] (open access)

[Funeral Program for Sheliah Yvette Wilson Haynes, December 11, 2006]

Funeral program for Sheliah Yvette Wilson Haynes, born November 9, 1954 and died December 11, 2006. The funeral was held Monday, December 11, 2006 at Friendship Missionary Baptist Church, officiated by Rev. R. L. Archield, Sr. Host Pastor. Funeral arrangements were made through D. W. Brooks Funeral Home and she was buried in Fort Sam Houston National Cemetery near San Antonio, Texas.
Date: December 11, 2006
Creator: unknown
Object Type: Pamphlet
System: The Portal to Texas History
The Death Penalty: Capital Punishment Legislation in the 109th Congress (open access)

The Death Penalty: Capital Punishment Legislation in the 109th Congress

This report discusses legislation regarding the death penalty in the 109th Congress. The USA PATRIOT Improvement and Reauthorization Act (Reauthorization Act) contains a number of death penalty related provisions. Some create new federal capital offenses; some add the death penalty as a sentencing option in the case of preexisting federal crimes; some alter the procedural attributes of federal capital cases. Other proposals offered during the 109th Congress would have followed the same pattern: some new crimes; some new penalties for old crimes; and some procedural adjustments. Only one of the other proposals, the Adam Walsh Child Protection and Safety Act, passed, although at least one House approved several others. Three proposals do not fit the pattern; they either would have abolished the death penalty as a federal sentencing alternative or would have imposed a moratorium upon executions.
Date: December 11, 2006
Creator: Doyle, Charles
Object Type: Report
System: The UNT Digital Library
Derivative, Risk Management, and Policy in the Energy Markets (open access)

Derivative, Risk Management, and Policy in the Energy Markets

This report provides a systematic guide to understanding the use of financial derivative contracts in the energy industry, focusing specifically on the petroleum and natural gas sectors.
Date: December 11, 2006
Creator: Pirog, Robert
Object Type: Report
System: The UNT Digital Library