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81929 - Fission-Product Separation Based on Room - Temperature Ionic Liquids
This project has demonstrated that Sr2+ and Cs+ can be selectively extracted from aqueous solutions into ionic liquids using crown ethers and that unprecedented large distribution coefficients can be achieved for these fission products. The volume of secondary wastes can be significantly minimized with this new separation technology. Through the current EMSP funding, the solvent extraction technology based on ionic liquids has been shown to be viable and can potentially provide the most efficient separation of problematic fission products from high level wastes. The key results from the current funding period are the development of highly selective extraction process for cesium ions based on crown ethers and calixarenes, optimization of selectivities of extractants via systematic change of ionic liquids, and investigation of task-specific ionic liquids incorporating both complexant and solvent characteristics.
Date:
December 9, 2004
Creator:
Rogers, Robin D.
Object Type:
Report
System:
The UNT Digital Library
Air-Flow Simulation in Realistic Models of the Trachea
In this article we present preliminary results from a new technique for flow simulation in realistic anatomical airways. The airways are extracted by means of Level-Sets methods that accurately model the complex and varying surfaces of anatomical objects. The surfaces obtained are defined at the sub-pixel level where they intersect the Cartesian grid of the image domain. It is therefore straightforward to construct embedded boundary representations of these objects on the same grid, for which recent work has enabled discretization of the Navier- Stokes equations for incompressible fluids. While most classical techniques require construction of a structured mesh that approximates the surface in order to extrapolate a 3D finite-element gridding of the whole volume, our method directly simulates the air-flow inside the extracted surface without losing any complicated details and without building additional grids.
Date:
December 9, 2004
Creator:
Deschamps, T; Schwartz, P & Trebotich, D
Object Type:
Article
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 129, No. 28, Ed. 1 Thursday, December 9, 2004
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
December 9, 2004
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 106, No. 209, Ed. 1 Thursday, December 9, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 9, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Amendments Between the Houses
This report briefly summarizes the process of amendments between the House of Representatives and the Senate, which occurs if the House and Senate approve differing versions of a measure. An exchange of amendments between the houses resolves these differences.
Date:
December 9, 2004
Creator:
Saturno, James V.
Object Type:
Report
System:
The UNT Digital Library
Andean Counterdrug Initiative (ACI) and Related Funding Programs: FY2005 Assistance
This report discusses the funds and material support the U.S. has contributed to help Colombia and the Andean region fight drug trafficking since the development of Plan Colombia in 1999.
Date:
December 9, 2004
Creator:
Veillette, Connie
Object Type:
Report
System:
The UNT Digital Library
Appropriations for FY2005: U.S. Department of Agriculture and Related Agencies
Appropriations are one part of a complex federal budget process that includes budget resolutions, appropriations (regular, supplemental, and continuing) bills, rescissions, and budget reconciliation bills. This Report is a guide to one of the 13 regular appropriations bills that Congress passes each year. It is designed to supplement the information provided by the House and Senate Appropriations Subcommittees on Agriculture.
Date:
December 9, 2004
Creator:
Chite, Ralph M.
Object Type:
Report
System:
The UNT Digital Library
Archer County News (Archer City, Tex.), No. 50, Ed. 1 Thursday, December 9, 2004
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
December 9, 2004
Creator:
Lewis, Shelley
Object Type:
Newspaper
System:
The Portal to Texas History
Automating Shallow Seismic Imaging
This seven-year, shallow-seismic reflection research project had the aim of improving geophysical imaging of possible contaminant flow paths. Thousands of chemically contaminated sites exist in the United States, including at least 3,700 at Department of Energy (DOE) facilities. Imaging technologies such as shallow seismic reflection (SSR) and ground-penetrating radar (GPR) sometimes are capable of identifying geologic conditions that might indicate preferential contaminant-flow paths. Historically, SSR has been used very little at depths shallower than 30 m, and even more rarely at depths of 10 m or less. Conversely, GPR is rarely useful at depths greater than 10 m, especially in areas where clay or other electrically conductive materials are present near the surface. Efforts to image the cone of depression around a pumping well using seismic methods were only partially successful (for complete references of all research results, see the full Final Technical Report, DOE/ER/14826-F), but peripheral results included development of SSR methods for depths shallower than one meter, a depth range that had not been achieved before. Imaging at such shallow depths, however, requires geophone intervals of the order of 10 cm or less, which makes such surveys very expensive in terms of human time and effort. We also …
Date:
December 9, 2004
Creator:
Steeples, Don W.
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 84, No. 4, Ed. 1 Thursday, December 9, 2004
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
December 9, 2004
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 114, No. 50, Ed. 1 Thursday, December 9, 2004
Weekly newspaper from Canadian, Texas that includes local, state and national news along with some advertising.
Date:
December 9, 2004
Creator:
Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
China and Proliferation of Weapons of Mass Destruction and Missiles: Policy Issues
Congress has long been concerned about whether U.S. policy advances the national interest in reducing the role of the People's Republic of China (PRC) in the proliferation of weapons of mass destruction (WMD) and missiles that could deliver them. China has taken some steps to mollify U.S. concerns about its role in weapons proliferation. Skeptics question whether China's cooperation in weapons nonproliferation has warranted President Bush's pursuit of stronger bilateral ties. 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-1990s.
Date:
December 9, 2004
Creator:
Kan, Shirley A.
Object Type:
Report
System:
The UNT Digital Library
Comanche Chief (Comanche, Tex.), No. 32, Ed. 1 Thursday, December 9, 2004
Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date:
December 9, 2004
Creator:
Wilkerson, James C., III
Object Type:
Newspaper
System:
The Portal to Texas History
The Congressional Budget Process: A Brief Overview
The term “budget process,” when applied to the federal government, actually refers to a number of processes that have evolved separately and that occur with varying degrees of coordination. This overview, and the accompanying flow chart, are intended to describe in brief each of the parts of the budget process that involve Congress, clarify the role played by each, and explain how they operate together. They include the President’s budget submission, the budget resolution, reconciliation, sequestration, authorizations, and appropriations.
Date:
December 9, 2004
Creator:
Saturno, James V.
Object Type:
Report
System:
The UNT Digital Library
Cooper Review (Cooper, Tex.), Vol. 124, No. 50, Ed. 1 Thursday, December 9, 2004
Weekly newspaper from Cooper, Texas that includes local, state, and national news along with advertising.
Date:
December 9, 2004
Creator:
Pinson, Beth
Object Type:
Newspaper
System:
The Portal to Texas History
[Correspondence from Lucile Wise to Eleanor Brown]
Correspondence from Lucile Wise to Eleanor Brown, consisting of a brief letter from Wise to Brown and two enclosures. The first enclosure is a letter from Michael D. Achey with information on how groups and individuals can support the National Advisory Committee (NAC) meeting in May 2005. The second enclosure is a letter from Mary McCleary Posner about the 17th Annual Memorial Day Weekend Salute to Veterans Celebration to be held from May 27-30, 2005.
Date:
2004-12-09/2005-01-12
Creator:
Wise, Lucile
Object Type:
Letter
System:
The Portal to Texas History
The Dublin Citizen (Dublin, Tex.), Vol. 15, No. 15, Ed. 1 Thursday, December 9, 2004
Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date:
December 9, 2004
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Dynamic response of materials on sub-nanosecond time scales, and beryllium properties for inertial confinement fusion
During the past few years, substantial progress has been made in developing experimental techniques capable of investigating the response of materials to dynamic loading on nanosecond time scales and shorter, with multiple diagnostics probing different aspects of the behavior. these relatively short time scales are scientifically interesting because plastic flow and phase changes in common materials with simple crystal structures--such as iron--may be suppressed, allowing unusual states to be induced and the dynamics of plasticity and polymorphism to be explored. Loading by laser ablation can be particularly convenient. The TRIDENT laser has been used to impart shocks and isentropic compression waves from {approx}1 to 200GPa in a range of elements and alloys, with diagnostics including surface velocimetry (line-imaging VISAR), surface displacement (framed area imaging), x-ray diffraction (single crystal and polycrystal), ellipsometry, and Raman spectroscopy. A major motivation has been the study of the properties of beryllium under conditions relevant to the fuel capsule in inertial confinement fusion: magnetically-driven shock and isentropic compression shots at Z were used to investigate the equation of state and shock melting characteristics, complemented by laser ablation experiments to investigate plasticity and heterogeneous response. These results will help to constrain acceptable tolerances on manufacturing, and possible …
Date:
December 9, 2004
Creator:
Swift, D. C.; Tierney, T. E.; Luo, S. N.; Paisley, D. L.; Kyrala, G. A.; Hauer, A. et al.
Object Type:
Article
System:
The UNT Digital Library
Electra Star-News (Electra, Tex.), Vol. 98, No. 17, Ed. 1 Thursday, December 9, 2004
Weekly newspaper from Electra, Texas that includes local, state, and national news along with advertising.
Date:
December 9, 2004
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Express-Star (Chickasha, Okla.), Ed. 1 Thursday, December 9, 2004
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 9, 2004
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
First and Second Quarters Hanford Seismic Report for Fiscal Year 2005
This report describes the earthquakes that occurred in the Hanford seismic monitoring network during the first and second quarters of Fiscal Year 2005
Date:
December 9, 2004
Creator:
Hartshorn, Donald C.; Reidel, Steve P.; Rohay, Alan C.; Sweeney, Mark D. & Clayton, Ray E.
Object Type:
Report
System:
The UNT Digital Library
Fiscal Year 2004 Summary Report: General Corrosion and Passive Film Stability
This report summarizes both general corrosion Alloy 22 from 60 to 220 C and the stability of the passive film from 60 to 90 C over a range of solution compositions that are relevant to the in in-drift chemical environment at the waste package surface. The general corrosion rates were determined by weightloss measurements in a range of complex solutions representing the evaporation of seepage water and more concentrated brines representing brines formed by the deliquescence of dust deposited on the canisters. These data represent the first weightloss measurements performed by the program at temperatures above 90 C. The low corrosion rates of Alloy 22 are attributed to the protective oxide film that forms at the metal surface. In this report, changes in the oxide composition are correlated with weightloss at the higher temperatures (140 related 140-220 C) where film characterization had not been previously performed. The stability of the oxide film was further analyzed by conducted a series of electrochemical tests in progressively more aggressive acid solutions to measure the general corrosion rates in solutions that mimic crevice or pit environments.
Date:
December 9, 2004
Creator:
Orme, C A; Gray, J; Hayes, J; Wong, L; Rebak, R; Carroll, S et al.
Object Type:
Report
System:
The UNT Digital Library
Front Surface Spectral Control Development for TPV Energy Conversion (a Presentation)
This paper discusses the introduction to the potential of alternative materials that provide higher temperature stability than current materials. The outline of this report is: (1) Review briefly the importance of spectral control; (2) Provide current results; (3) Introduce the temperature stability issue; (4) Describe the requirements for alternate materials and (5) Present alternative materials. The conclusions of this report are: (1) Antimony selenide has achieved the highest spectral efficiency to date; (2) Several materials expected to have higher temperature stability have been shown to be viable; (3) So far, with limited development, the performance of the these materials is lower than Antimony selenide; and (4) Additional development will be required to achieve similar or higher performance.
Date:
December 9, 2004
Creator:
Rahmlow, T. D., Jr.; Lazo-Wasem, J. E.; Gratrix, E. J.; Fourspring, P. M. & DePoy, D. M.
Object Type:
Article
System:
The UNT Digital Library
Functional Analysis and Discovery of Microbial Genes Transforming Metallic and Organic Pollutants: Database and Experimental Tools
Microbial functional genomics is faced with a burgeoning list of genes which are denoted as unknown or hypothetical for lack of any knowledge about their function. The majority of microbial genes encode enzymes. Enzymes are the catalysts of metabolism; catabolism, anabolism, stress responses, and many other cell functions. A major problem facing microbial functional genomics is proposed here to derive from the breadth of microbial metabolism, much of which remains undiscovered. The breadth of microbial metabolism has been surveyed by the PIs and represented according to reaction types on the University of Minnesota Biocatalysis/Biodegradation Database (UM-BBD): http://umbbd.ahc.umn.edu/search/FuncGrps.html The database depicts metabolism of 49 chemical functional groups, representing most of current knowledge. Twice that number of chemical groups are proposed here to be metabolized by microbes. Thus, at least 50% of the unique biochemical reactions catalyzed by microbes remain undiscovered. This further suggests that many unknown and hypothetical genes encode functions yet undiscovered. This gap will be partly filled by the current proposal. The UM-BBD will be greatly expanded as a resource for microbial functional genomics. Computational methods will be developed to predict microbial metabolism which is not yet discovered. Moreover, a concentrated effort to discover new microbial metabolism will be …
Date:
December 9, 2004
Creator:
Wackett, Lawrence P. & Ellis, Lynda B.M.
Object Type:
Report
System:
The UNT Digital Library