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Alternative Inspection Methods for Single Shell Tanks
This document was prepared to provide evaluations and recommendations regarding nondestructive evaluation methods that might be used to determine cracks and bowing in the ceiling of waste storage tanks on the Hanford site. The goal was to determine cracks as small as 1/16 in. wide in the ceiling, and bowing as small as 0.25 in. This report describes digital video camera methods that can be used to detect a crack in the ceiling of the dome, and methods for determining the surface topography of the ceiling in the waste storage tanks to detect localized movements in the surface. A literature search, combined with laboratory testing, comprised this study.
Date:
January 19, 2010
Creator:
Peters, Timothy J.; Alzheimer, James M. & Hurley, David E.
Object Type:
Report
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 112, No. 31, Ed. 1 Tuesday, January 19, 2010
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 19, 2010
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Baytown Sun (Baytown, Tex.), Vol. 90, No. 13, Ed. 1 Tuesday, January 19, 2010
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 19, 2010
Creator:
Clements, Clifford E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 104, No. 6, Ed. 1 Tuesday, January 19, 2010
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
January 19, 2010
Creator:
Cartwright, Brian & Velvin, Candace E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Brand (Abilene, Tex.), Vol. 98, No. 9, Ed. 1 Tuesday, January 19, 2010
Bi-weekly student newspaper from Hardin-Simmons University in Abilene, Texas that includes campus news and local news of interest to students along with advertising.
Date:
January 19, 2010
Creator:
Wong, Adriel
Object Type:
Newspaper
System:
The Portal to Texas History
The Department of Defense's Use of Private Security Contractors in Iraq and Afghanistan: Background, Analysis, and Options for Congress
This report examines current private security contractor (PSC) trends in Iraq and Afghanistan, steps Department of Defense (DOD) has taken to improve oversight and management, and the extent to which DOD has incorporated the role of security contractors into its doctrine and strategy. It also reviews steps Congress has taken to exercise oversight over the use of PSCs and includes options for Congress.
Date:
January 19, 2010
Creator:
Schwartz, Moshe
Object Type:
Report
System:
The UNT Digital Library
Design and Implementation of a Metadata-rich File System
Despite continual improvements in the performance and reliability of large scale file systems, the management of user-defined file system metadata has changed little in the past decade. The mismatch between the size and complexity of large scale data stores and their ability to organize and query their metadata has led to a de facto standard in which raw data is stored in traditional file systems, while related, application-specific metadata is stored in relational databases. This separation of data and semantic metadata requires considerable effort to maintain consistency and can result in complex, slow, and inflexible system operation. To address these problems, we have developed the Quasar File System (QFS), a metadata-rich file system in which files, user-defined attributes, and file relationships are all first class objects. In contrast to hierarchical file systems and relational databases, QFS defines a graph data model composed of files and their relationships. QFS incorporates Quasar, an XPATH-extended query language for searching the file system. Results from our QFS prototype show the effectiveness of this approach. Compared to the de facto standard, the QFS prototype shows superior ingest performance and comparable query performance on user metadata-intensive operations and superior performance on normal file metadata operations.
Date:
January 19, 2010
Creator:
Ames, S; Gokhale, M B & Maltzahn, C
Object Type:
Report
System:
The UNT Digital Library
Displacing Coal with Generation from Existing Natural Gas-Fired Power Plants
This report provides an overview of the issues involved in displacing coal-fired generation with electricity from existing and underutilized natural gas plants in order to cut greenhouse gas emissions. Reducing carbon dioxide emissions from coal plants is a focus of many proposals for cutting greenhouse gas emissions.
Date:
January 19, 2010
Creator:
Kaplan, Stan M.
Object Type:
Report
System:
The UNT Digital Library
Dynamics of Arctic and Sub-Arctic Climate and Atmospheric Circulation: Diagnosis of Mechanisms and Biases Using Data Assimilation
This is the final report for DOE grant DE-FG02-07ER64434 to Eric DeWeaver at the University of Wisconsin-Madison. The overall goal of work performed under this grant is to enhance understanding of simulations of present-day climate and greenhouse gas-induced climate change. Enhanced understanding is desirable 1) as a prerequisite for improving simulations; 2) for assessing the credibility of model simulations and their usefulness as tools for decision support; and 3) as a means to identify robust behaviors which commonly occur over a wide range of models, and may yield insights regarding the dominant physical mechanisms which determine mean climate and produce climate change. A furthe objective is to investigate the use of data assimilation as a means for examining and correcting model biases. Our primary focus is on the Arctic, but the scope of the work was expanded to include the global climate system to the extent that research targets of opportunity present themselves. Research performed under the grant falls into five main research areas: 1) a study of data assimilation using an ensemble filter with the atmospheric circulation model of the National Center for Atmospheric Research, in which both conventional observations and observations of the refraction of radio waves from …
Date:
January 19, 2010
Creator:
DeWeaver, Eric T.
Object Type:
Report
System:
The UNT Digital Library
EFFECT OF PRETREATMENT ON PT-CO/C CATHODE CATALYSTS FOR THE OXYGEN-REDUCTION REACTION
Carbon supported Pt and Pt-Co electrocatalysts for the oxygen reduction reaction in low temperature fuel cells were prepared by the reduction of the metal salts with sodium borohydride and sodium formate. The effect of surface treatment with nitric acid on the carbon surface and Co on the surface of carbon prior to the deposition of Pt was studied. The catalysts where Pt was deposited on treated carbon the ORR reaction preceded more through the two electron pathway and favored peroxide production, while the fresh carbon catalysts proceeded more through the four electron pathway to complete the oxygen reduction reaction. NaCOOH reduced Pt/C catalysts showed higher activity that NaBH{sub 4} reduced Pt/C catalysts. It was determined that the Co addition has a higher impact on catalyst activity and active surface area when used with NaBH{sub 4} as reducing agent as compared to NaCOOH.
Date:
January 19, 2010
Creator:
Fox, E. & Colon-Mercado, H.
Object Type:
Article
System:
The UNT Digital Library
Executive Order 13438: Blocking Property of Certain Persons Who Threaten Stabilization Efforts in Iraq
This report provides a brief history of the development of presidential powers in peacetime. It discusses some of the issues that might be raised in light of the contrast between the executive order's broad language and its narrow aim. It examines the reach of the executive order and provides legal analyses of some of the constitutional questions raised in the courts by similar sanctions programs.
Date:
January 19, 2010
Creator:
Murphy, M. Maureen
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Tuesday, January 19, 2010
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 19, 2010
Creator:
Pittman, Jerry & Wray, Kelly
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Farm Price-Cost Squeeze and U.S. Farm Policy
This report discusses the current farm price-cost squeeze, how it varies across commodities, and the factors behind the current situation. The report also considers the cyclical nature of agricultural markets, effects on producers, and the government's role in addressing the situation.
Date:
January 19, 2010
Creator:
Shields, Dennis A.
Object Type:
Report
System:
The UNT Digital Library
Federal Register, Volume 75, Number 11, January 19, 2010, Pages 2785-3124
Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.
Date:
January 19, 2010
Creator:
United States. Office of the Federal Register.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
The Greensheet (Houston, Tex.), Vol. 40, No. 601, Ed. 1 Tuesday, January 19, 2010
Free weekly newspaper that includes business and classified advertising.
Date:
January 19, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 40, No. 602, Ed. 1 Tuesday, January 19, 2010
Free weekly newspaper that includes business and classified advertising.
Date:
January 19, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Guam: U.S. Defense Deployments
This report discusses the strategic significance of Guam for defense buildup and the force relocation and deployments from the U.S. mainland. It also discusses the concerns and issues for congress, such as allies and partner, China, and legislation.
Date:
January 19, 2010
Creator:
Kan, Shirley A. & Niksch, Larry A.
Object Type:
Report
System:
The UNT Digital Library
HCDF: A Hybrid Community Discovery Framework
None
Date:
January 19, 2010
Creator:
Henderson, Keith; Eliassi-Rad, Tina; Papadimitriou, Spiros & Faloutsos, Christos
Object Type:
Article
System:
The UNT Digital Library
High statistics analysis using anisotropic clover lattices: (III) Baryon-baryon interactions
Low-energy baryon-baryon interactions are calculated in a high-statistics lattice QCD study on a single ensemble of anisotropic clover gauge-field configurations at a pion mass of m{sub {pi}} {approx} 390 MeV, a spatial volume of L{sup 3} {approx} (2.5 fm){sup 3}, and a spatial lattice spacing of b {approx} 0.123 fm. Luescher's method is used to extract nucleon-nucleon, hyperon-nucleon and hyperon-hyperon scattering phase shifts at one momentum from the one- and two-baryon ground-state energies in the lattice volume. The isospin-3/2 N{Sigma} interactions are found to be highly spin-dependent, and the interaction in the {sup 3}S{sub 1} channel is found to be strong. In contrast, the N{Lambda} interactions are found to be spin-independent, within the uncertainties of the calculation, consistent with the absence of one-pion-exchange. The only channel for which a negative energy-shift is found is {Lambda}{Lambda}, indicating that the {Lambda}{Lambda} interaction is attractive, as anticipated from model-dependent discussions regarding the H-dibaryon. The NN scattering lengths are found to be small, clearly indicating the absence of any fine-tuning in the NN-sector at this pion mass. This is consistent with our previous Lattice QCD calculation of NN interactions. The behavior of the signal-to-noise ratio in the baryon-baryon correlation functions, and in the ratio …
Date:
January 19, 2010
Creator:
Beane, S; Detmold, W; Lin, H; Luu, T; Orginos, K; Savage, M et al.
Object Type:
Article
System:
The UNT Digital Library
Innovative Coal Solids-Flow Monitoring and Measurement Using Phase-Doppler and Mie Scattering Techniques
Fuel flow to individual burners is complicated and difficult to determine on coal fired boilers, since coal solids were transported in a gas suspension that is governed by the complex physics of two-phase flow. The objectives of the project were the measurements of suspended coal solids-flows in the simulated test conditions. Various extractive methods were performed manually and can give only a snapshot result of fuel distribution. In order to measure particle diameter & velocity, laser based phase-Doppler particle analyzer (PDPA) and particle image velocimetry (PIV) were carefully applied. Statistical methods were used to analyze particle characteristics to see which factors have significant effect. The transparent duct model was carefully designed and fabricated for the laser-based-instrumentation of solids-flow monitoring (LISM). The experiments were conducted with two different kinds of particles with four different particle diameters. The particle types were organic particles and saw dust particles with the diameter range of 75-150 micron, 150-250 micron, 250-355 micron and 355-425 micron. The densities of the particles were measured to see how the densities affected the test results. Also the experiment was conducted with humid particles and fog particles. To generate humid particles, the humidifier was used. A pipe was connected to the …
Date:
January 19, 2010
Creator:
Lee, Stephen Seong
Object Type:
Report
System:
The UNT Digital Library
Medicaid and CHIP: Enrollment, Benefits, Expenditures, and Other Characteristics of State Premium Assistance Programs
Correspondence issued by the Government Accountability Office with an abstract that begins "Fiscal pressures, rising health care costs, and increases in the number of uninsured may lead states to look toward public-private partnerships to help finance health insurance coverage. Through Medicaid and the State Children's Health Insurance Program (CHIP), states have had long-standing authority to operate premium assistance programs that subsidize the purchase of private health insurance. Enacted in February 2009, the Children's Health Insurance Program Reauthorization Act of 2009 (CHIPRA), which reauthorized CHIP and made changes to Medicaid, provided states with additional options for operating premium assistance programs. As of November 2009, states had not implemented premium assistance programs under the new authorities provided by CHIPRA, but, as allowed by CHIPRA, states were continuing to operate their programs under preexisting authorities. Through premium assistance programs, states use Medicaid funds, CHIP funds, or both to subsidize the cost of private health insurance--such as employer-sponsored insurance (ESI)--for eligible individuals. As such, premium assistance programs contrast with direct coverage, where states provide Medicaid or CHIP benefits to enrollees by paying doctors and other providers directly or contracting with managed care organizations. Previous reports on premium assistance programs have described the programs' potential …
Date:
January 19, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
The National Nanotechnology Initiative: Overview, Reauthorization, and Appropriations Issues
This report provides an overview of nanotechnology, the National Nanotechnology Initiative, possible reauthorization of the 21st Century Nanotechnology Research and Development Act of 2003 (P.L. 108-153), and appropriations issues.
Date:
January 19, 2010
Creator:
Sargent, John F., Jr.
Object Type:
Report
System:
The UNT Digital Library
Nevada Test Site 2009 Data Report: Groundwater Monitoring Program, Area 5 Radioactive Waste Management Site
This report is a compilation of the groundwater sampling results from the Area 5 Radioactive Waste Management Site (RWMS). The data have been collected since 1993 and include calendar year 2009 results. During 2009, groundwater at each of the three pilot wells was sampled on March 10, 2009, and August 18, 2009, and water levels at each of the three pilot wells were measured on February 17, May 6, August 17, and November 10, 2009. Groundwater samples were analyzed for the following indicators of contamination: pH, specific conductance, total organic carbon, total organic halides, and tritium. Indicators of general water chemistry (cations and anions) were also measured. Results from all samples collected in 2009 were within the limits established by agreement with the Nevada Division of Environmental Protection for each analyte. These data indicate that there has been no measurable impact to the uppermost aquifer from the Area 5 RWMS. There were no significant changes in measured groundwater parameters compared to previous years. The report contains an updated cumulative chronology for the Area 5 RWMS Groundwater Monitoring Program and a brief description of the site hydrogeology.
Date:
January 19, 2010
Creator:
National Security Technologies, LLC
Object Type:
Report
System:
The UNT Digital Library
North Texas Daily (Denton, Tex.), Vol. 95, No. 1, Ed. 1 Tuesday, January 19, 2010
Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.
Date:
January 19, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History