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Advanced Corrosion-Resistant Zr Alloys for High Burnup and Generation IV Applications
The objective of this collaboration between four institutions in the US and Korea is to demonstrate a technical basis for the improvement of the corrosion resistance of zirconium-based alloys in more extreme operating environments (such as those present in severe fuel duty,cycles (high burnup, boiling, aggressive chemistry) andto investigate the feasibility (from the point of view of corrosion rate) of using advanced zirconium-based alloys in a supercritical water environment.
Date:
October 31, 2006
Creator:
Motta, Arthur; Jeong, Yong Hwan; Comstock, R. J.; Was, G. S. & Kim, Y. S.
Object Type:
Report
System:
The UNT Digital Library
Air Quality: EPA’s 2006 Changes to the Particulate Matter (PM) Standard
In order to better understand EPA’s actions, this report provides an analysis of the agency’s final 2006 revisions to the particulates NAAQS, and the estimated costs and benefits of the new standards and of a more stringent alternatives analyzed. The report concludes by highlighting concerns and issues raised regarding the revisions to the particulates standards, including those of the science advisory committee (Clean Air Scientific Advisory Committee, or CASAC), and actions in Congress.
Date:
October 31, 2006
Creator:
McCarthy, James E. & Esworthy, Robert
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 108, No. 183, Ed. 1 Tuesday, October 31, 2006
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 31, 2006
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
ANALYSIS OF WIGNER ENERGY IN BGRR GRAPHITE.
Wigner Energy was determined by DSC analysis in cored graphite from the Brookhaven Graphite Research Reactor. Eight segments (4-inch long slugs) of cores were obtained from BGRR for analysis of Wigner Energy retained in the graphite. Graphite was scraped from each end of each slug giving two samples from each specimen. Between 10 and 20 mg of this graphite powder were weighed into platinum analysis cells and subjected to thermal analysis on a Shimadzu Differential Scanning Calorimeter (DSC-50). The samples were annealed in nitrogen up to 700 C at a scan rate of 20 C/minute with data recorded at one second intervals. Each sample was run twice; the first scan provided the energy profile of the ''as received'' material and the second scan provided the background energy profile of the specimen, as the Wigner Energy had been removed during the first annealing. An example is shown in Figure 1. The blank was subtracted from the initial scan to give the Wigner energy profile. The appendix contains two graphs for each sample. One graph presents the data in J/s/g and shows the results of the two scans described above; the energy measurement of the ''as received'' and the same sample after …
Date:
October 31, 2006
Creator:
FUHRMANN, M.
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 85, No. 340, Ed. 1 Tuesday, October 31, 2006
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
October 31, 2006
Creator:
Clements, Clifford E.
Object Type:
Newspaper
System:
The Portal to Texas History
Boerne Star & Recorder (Boerne, Tex.), Vol. 100, No. 87, Ed. 1 Tuesday, October 31, 2006
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
October 31, 2006
Creator:
Cartwright, Brian
Object Type:
Newspaper
System:
The Portal to Texas History
Broadband Internet Access and the Digital Divide: Federal Assistance Programs
This report discusses the "digital divide," a term that has been used to characterize a gap between those Americans who use or have access to telecommunications technologies (e.g., telephones, computers, the Internet) and those who do not. It particularly discusses one important subset of the digital divide debate concerns high speed Internet access or broadband.
Date:
October 31, 2006
Creator:
Kruger, Lennard G. & Gilroy, Angele A.
Object Type:
Report
System:
The UNT Digital Library
Carbon Tetrachloride Flow and Transport in the Subsurface of the 216-Z-18 Crib and 216-Z-1A Tile Field at the Hanford Site: Multifluid Flow Simulations and Conceptual Model Update
Carbon tetrachloride (CT) was discharged to the 216-Z-9, Z-1A, and Z-18 waste sites that are included in the 200-PW-1 Operable Unit in Hanford 200 West Area. Fluor Hanford, Inc. is conducting a Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) remedial investigation/feasibility study (RI/FS) for the 200-PW-1 Operable Unit. As part of this overall effort, Pacific Northwest National Laboratory (PNNL) was contracted to improve the conceptual model of how CT is distributed in the Hanford 200 West Area subsurface through use of numerical flow and transport modeling. This work supports the U.S. Department of Energy's (DOE's) efforts to characterize the nature and distribution of CT in the 200 West Area and subsequently select an appropriate final remedy.
Date:
October 31, 2006
Creator:
Oostrom, Mart; Rockhold, Mark L.; Thorne, Paul D.; Last, George V. & Truex, Michael J.
Object Type:
Report
System:
The UNT Digital Library
Chemical Effects Head-Loss Research in Support of Generic Safety Issue 191.
This summary report describes studies conducted at Argonne National Laboratory on the potential for chemical effects on head loss across sump screens. Three different buffering solutions were used for these tests: trisodium phosphate (TSP), sodium hydroxide, and sodium tetraborate. These pH control agents used following a LOCA at a nuclear power plant show various degrees of interaction with the insulating materials Cal-Sil and NUKON. Results for Cal-Sil dissolution tests in TSP solutions, settling rate tests of calcium phosphate precipitates, and benchmark tests in chemically inactive environments are also presented. The dissolution tests were intended to identify important environmental variables governing both calcium dissolution and subsequent calcium phosphate formation over a range of simulated sump pool conditions. The results from the dissolution testing were used to inform both the head loss and settling test series. The objective of the head loss tests was to assess the head loss produced by debris beds created by Cal-Sil, fibrous debris, and calcium phosphate precipitates. The effects of both the relative arrival time of the precipitates and insulation debris and the calcium phosphate formation process were specifically evaluated. The debris loadings, test loop flow rates, and test temperature were chosen to be reasonably representative of …
Date:
October 31, 2006
Creator:
Park, J. H.; Kasza, K.; Fisher, B.; Oras, J.; Natesan, K.; Shack, W. J. et al.
Object Type:
Report
System:
The UNT Digital Library
Clean Coal Diesel Demonstration Project
A Clean Coal Diesel project was undertaken to demonstrate a new Clean Coal Technology that offers technical, economic and environmental advantages over conventional power generating methods. This innovative technology (developed to the prototype stage in an earlier DOE project completed in 1992) enables utilization of pre-processed clean coal fuel in large-bore, medium-speed, diesel engines. The diesel engines are conventional modern engines in many respects, except they are specially fitted with hardened parts to be compatible with the traces of abrasive ash in the coal-slurry fuel. Industrial and Municipal power generating applications in the 10 to 100 megawatt size range are the target applications. There are hundreds of such reciprocating engine power-plants operating throughout the world today on natural gas and/or heavy fuel oil.
Date:
October 31, 2006
Creator:
Wilson, Robert
Object Type:
Report
System:
The UNT Digital Library
Compendium of Material Composition Data for Radiation Transport Modeling
Computational modeling of radiation transport problems including homeland security, radiation shielding and protection, and criticality safety all depend upon material definitions. This document has been created to serve two purposes: 1) to provide a quick reference of material compositions for analysts and 2) a standardized reference to reduce the differences between results from two independent analysts. Analysts are always encountering a variety of materials for which elemental definitions are not readily available or densities are not defined. This document provides a location where unique or hard to define materials will be located to reduce duplication in research for modeling purposes. Additionally, having a common set of material definitions helps to standardize modeling across PNNL and provide two separate researchers the ability to compare different modeling results from a common materials basis.
Date:
October 31, 2006
Creator:
Williams, Ralph G.; Gesh, Christopher J. & Pagh, Richard T.
Object Type:
Report
System:
The UNT Digital Library
THE COMPETITION BETWEEN METHYLMERCURY RISKS AND OMEGA-3 POLYUNSATURATED FATTY ACID BENEFITS: A REVIEW OF CONFLICTING EVIDENCE ON FISH CONSUMPTION AND CARDIOVASCULAR HEALTH.
The health concerns of methylmercury (MeHg) contamination of seafood have recently been extended to include cardiovascular effects, especially premature mortality. Although the fatty acids (fish oils) found in most species are thought to confer a wide range of health benefits, especially to the cardiovascular system, some epidemiological studies have suggested that such benefits may be offset by adverse effects of MeHg. This comprehensive review is based on searches of the NIH MEDLINE database and compares and contrasts 145 published studies involving cardiovascular effects and exposures to mercury and other fish contaminants, intake of fatty acids including dietary supplements of fish oils, and rates of seafood consumption. Since few of these studies include adequate simultaneous measurements of all of these potential predictor variables, we summarized their effects separately, across the available studies of each, and then drew conclusions based on the aggregated findings. It is important to realize that studies of seafood consumption encompass the net effects of all of these predictor variables, but that seafood intake studies are rarely supported by human biomarker measurements that reflect the actual uptake of harmful as well as beneficial fish ingredients. As a result, exposure measurement error is an issue when comparing studies and …
Date:
October 31, 2006
Creator:
Lipfert, F. W. & Sullivan, T. M.
Object Type:
Report
System:
The UNT Digital Library
Cracking and Corrosion of Composite Tubes in Black Liquor Recovery Boiler Primary Air Ports
None
Date:
October 31, 2006
Creator:
Keiser, J. R.; Singbeil, D. L.; Sarma, G. B.; Kish, J. R.; Yuan, J.; Frederick, L. A. et al.
Object Type:
Report
System:
The UNT Digital Library
The Davis-Bacon Act: Issues and Legislation During the 109th Congress
This report was written from the perspective of a labor economist that suggests certain occasions during which the Davis-Bacon act has become a legislative issue.
Date:
October 31, 2006
Creator:
Whittaker, William G.
Object Type:
Report
System:
The UNT Digital Library
Detailed Structure of the X-Ray Jet in 4C 19.44 (=PKS1354+195)
We investigate the variations of the magnetic field, Doppler factor, and relativistic particle density along the jet of a quasar at z=0.72. We chose 4C 19.44 for this study because of its length and straight morphology. The 18 arcsec length of the jet provides many independent resolution elements in the Chandra X-ray image. The straightness suggests that geometry factors, although uncertain, are almost constant along the jet. We assume the X-ray emission is from inverse Compton scattering of the cosmic microwave background. With the aid of assumptions about jet alignment, equipartition between magnetic-field and relativistic-particle energy, and filling factors, we find that the jet is in bulk relativistic motion with a Doppler factor {approx} 6 at an angle no more than 10{sup o} to the line of sight over deprojected distances {approx} 150-600 kpc from the quasar, and with a magnetic field {approx} 10 {micro}Gauss.
Date:
October 31, 2006
Creator:
Schwartz, Daniel A.; Harris, D. E.; Landt, H.; Siemiginowska, A.; Perlman, E. S.; Cheung, C. C. et al.
Object Type:
Article
System:
The UNT Digital Library
The Development of New User Research Capabilities in Environmental Molecular Science: Workshop Report
On August 1, and 2, 2006, 104 scientists representing 40 institutions including 24 Universities and 5 National Laboratories gathered at the W.R. Wiley Environmental Molecular Sciences Laboratory, a National scientific user facility, to outline important science challenges for the next decade and identify major capabilities needed to pursue advanced research in the environmental molecular sciences. EMSL’s four science themes served as the framework for the workshop. The four science themes are 1) Biological Interactions and Interfaces, 2) Geochemistry/Biogeochemistry and Surface Science, 3) Atmospheric Aerosol Chemistry, and 4) Science of Interfacial Phenomena.
Date:
October 31, 2006
Creator:
Felmy, Andrew R.; Baer, Donald R.; Fredrickson, Jim K.; Gephart, Roy E. & Rosso, Kevin M.
Object Type:
Report
System:
The UNT Digital Library
Ensemble: 2006-10-31 – Symphonic Band
Access:
Use of this item is restricted to the UNT Community
Symphonic band concert performed at the UNT College of Music Winspear Hall
Date:
October 31, 2006
Creator:
University of North Texas. Symphonic Band.
Object Type:
Sound
System:
The UNT Digital Library
Environmental Biosciences Program Quarterly Report
In May 2002, the United States Department of Energy (DOE) signed Assistance Instrument Number DE-FC09-02CH11109 with the Medical University of South Carolina (MUSC) to support the Environmental Biosciences Program (EBP). This funding instrument replaces DOE Assistance Instrument Number DE-FC02-98CH10902. EBP is an integrated, multidisciplinary scientific research program, employing a range of research initiatives to identify, study and resolve environmental health risks. These initiatives are consistent with the MUSC role as a comprehensive state-supported health sciences institution and with the nation's need for new and better approaches to the solution of a complex and expansive array of environment-related health problems. The intrinsic capabilities of a comprehensive health sciences institution enable MUSC to be a national resource for the scientific investigation of environmental health issues. EBPs success as a nationally prominent research program is due, in part, to its ability to task-organize scientific expertise from multiple disciplines in addressing these complex problems Current research projects have focused EBP talent and resources on providing the scientific basis for risk-based standards, risk-based decision making and the accelerated clean-up of widespread environmental hazards. These hazards include trichloroethylene and low-dose ionizing radiation. A project is also being conducted in the use of geographical information system technology …
Date:
October 31, 2006
Creator:
Mohr, Lawrence C.
Object Type:
Report
System:
The UNT Digital Library
Experimental and analytic studies to model kinetics and mass transport of carbon dioxide sequstration in depleted carbonate reservoirs
There is undeniable evidence that concentration of carbon dioxide in the atmosphere is rising at an increasingly rapid rate primarily as the result of burning fossil fuels. Although the debate continues, most of the scientific community believes that higher levels of atmospheric CO2 will lead to a significant warming of the Earth’s climate and that there is already evidence that this is occurring. There are two ways to ameliorate this problem. One is to significantly reduce production of CO2, which is primarily a political-economic problem, and the other is to remove CO2 from emissions and/or the atmosphere and find some way to sequester it. Several possible ways to sequester CO2 are under investigation or have been suggested. These include removal by chemical reaction, deep seabed disposal, and pumping supercritical CO2 into various subsurface environments. Sequestration of carbon dioxide in depleted gas reservoirs appears to be a viable option, with a possible economic spin-off from the recovery of significant gas reserves. At the elevated temperatures and pressures encountered in reservoirs, carbon dioxide behaves as a supercritical fluid. Under these conditions, little was known regarding the, diffusion of carbon dioxide in natural gas, and displacement of natural gas by carbon dioxide. A …
Date:
October 31, 2006
Creator:
Morse, John W & Mamora, Daulat
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Tuesday, October 31, 2006
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 31, 2006
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Faculty Recital: 2006-10-31 - Gustavo Romero, piano
Access:
Use of this item is restricted to the UNT Community
Faculty recital performed at the UNT College of Music Concert Hall
Date:
October 31, 2006
Creator:
Romero, Gustavo
Object Type:
Sound
System:
The UNT Digital Library
Federal R&D Funding Under a Continuing Resolution
None
Date:
October 31, 2006
Creator:
Davey, Michael E.
Object Type:
Report
System:
The UNT Digital Library
Final Report Package_Winnebago
The Winnebago Tribe of Nebraska energy options study results will be used to advance the Tribe’s near term energy management objectives. The array of energy options identified allows the Tribe to select those activities that best fit its energy strategies, goals and objectives. During the course of the study, Red Mountain analyzed both energy options and energy organizational alternatives suitable for the Tribe, presented findings to the Tribal Council, and made recommendations regarding each. Work products delivered to the Tribe, and provided in the Final Report included: • A matrix of energy management options applicable to the Tribe, which provided descriptions of particular conservation, efficiency, weatherization, and demand management alternatives. The matrix also provided insight about relative costs of the alternatives, cost/benefit efficacy, ease of implementation, resources for implementing, and observations about each. • A matrix of utility service options applicable to the Tribe, describing each of the four alternatives described above. The matrix also provided insight about key benefits of each option, required resources, costs and timeframe for implementation, funding sources and analysis, and key issues for consideration. • Discussion guides prepared for each meeting between the Energy Committee and Council, and the Tribe’s contractor, Red Mountain Energy Partners, …
Date:
October 31, 2006
Creator:
Carolyn Stewart, Director, Red Mountain Energy Partners
Object Type:
Report
System:
The UNT Digital Library
Final Technical Report for project "Factors Controlling In Situ Uranium and Technetium Bio-Reduction and Reoxidation at the NABIR Field Research Center"
The overall goal of this project was to better understand factors and processes controlling microbially-mediated reduction and reoxidation of U and Tc in the unconsolidated residuum overlying the Nolichucky shale at the Field Research Center (FRC) at Oak Ridge National Laboratory. Project activities were designed to test the following hypotheses: 1. The small rates of denitrification and U bio-reduction observed in laboratory incubations of sediments from FRC Area 1 at low pH (< 5) are due to the presence of high concentrations of toxic metals (especially Al and Ni). Rates of Tc reduction will also be small at low pH in the presence of high concentrations of toxic metals. 2. In situ rates of U and perhaps Tc bio-reduction can be increased by increasing system pH and thus precipitating toxic metals from solution. 3. In situ rates of U and Tc bio-reduction can be increased by the addition of humic substances, which complex toxic metals such as Al and Ni, buffer pH, and serve as electron shuttles to facilitate U and Tc reduction. 4. Microbially-reduced U and Tc are rapidly oxidized in the presence of high concentrations of NO3- and the denitrification intermediates NO2-, N2O, and NO. 5. An electron-donor-addition …
Date:
October 31, 2006
Creator:
Dr. Jonathan D. Istok (PI), Oregon State University; Dr. Lee Krumholz, University of Oklahoma; Dr. James McKinley, Pacific Northwest National Laboratory & Dr. Baohua Gu, Oak Ridge National Laboratory
Object Type:
Report
System:
The UNT Digital Library