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938 Matching Results
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Industrial Competitiveness and Technological Advancement: Debate Over Government Policy
There is an on-going interest in the pace of U.S. technological advancement due to its influence on U.S. economic growth, productivity, and international competitiveness. Because technology can contribute to economic growth and productivity increases, congressional interest has focused on how to augment private-sector technological development. Legislative activity over the past decade has created a policy for technology development, albeit an ad hoc one. Because of the lack of consensus on the scope and direction of a national policy, Congress has taken an incremental approach aimed at creating new mechanisms to facilitate technological advancement in particular areas and making changes and improvements as necessary
Date:
January 10, 2005
Creator:
Schacht, Wendy H.
Object Type:
Report
System:
The UNT Digital Library
Influence Of Coal Combustion Flue Gas Desulfurization Waste On Element Uptake By Maize (Zea Mays L.)
A greenhouse study was conducted to determine the effect of coal combustion flue gas desulfurization (FGD) waste from a coal combustion electric power facility on element uptake by maize (Zea mays L.). Unweathered FGD was applied to an Orangeburg Series (Typic Paleudult) soil with an initial soil pH salt of 4.90. The FGD was added at 0, 1, 2, 4, 6, 8, and 10 per cent by weight. The test plant, maize, was harvested after 6 weeks of growth. Within 56 days of the FGD application, all rates of FGD significantly increased pH in the soil and the soil leachate above 6.0. The elemental concentration of the maize tissues indicated a characteristic elevation of B, Se, Mo, and As. However, no visual symptoms of toxicity of B or other elements in plants were observed. Increasing level of FGD caused a steady decline in dry weight, with the highest treatment producing plants which had approximately half the biomass of the control plants. Due to elevated concentrations of B and other elements and due to adverse yield effects measured on plants, unweathered FGD would not be a suitable amendment for 6-week old maize on this soil.
Date:
January 10, 2005
Creator:
Knox, Anna S.; Knox, John D.; Adriano, Domy C. & Sajwan, Kenneth S.
Object Type:
Book
System:
The UNT Digital Library
Information Sharing for Homeland Security: A Brief Overview
None
Date:
January 10, 2005
Creator:
Relyea, Harold C. & Seifert, Jeffrey W.
Object Type:
Report
System:
The UNT Digital Library
Ironmaking Process Alternatives Screening Study Volume II: Appendix
None
Date:
January 10, 2005
Creator:
Lockwood Greene, . .
Object Type:
Report
System:
The UNT Digital Library
IRS Guidelines for Political Advocacy by Exempt 501(c) Organizations: Revenue Ruling 2004-6
None
Date:
January 10, 2005
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Israeli-United States Relations
None
Date:
January 10, 2005
Creator:
Mark, Clyde R.
Object Type:
Report
System:
The UNT Digital Library
Liner Builder: A Tool for Building Geometric Models of Shaped Charge Liners
None
Date:
January 10, 2005
Creator:
Henshaw, W D
Object Type:
Text
System:
The UNT Digital Library
Medicaid Disproportionate Share Payments
The Medicaid statute requires that states make disproportionate share (DSH) adjustments to the payment rates of certain hospitals treating large numbers of low-income and Medicaid patients — recognizing the disadvantaged situation of those hospitals. Although the requirement was established in 1981, DSH payments did not become a significant part of the program until after 1989 when they grew from just under $1 billion to almost $17 billion by 1992. During that time states’ Medicaid budgets were facing a number of upward pressures while states were learning about financing techniques that made it easier to collect increased DSH payments from the federal government.
Date:
January 10, 2005
Creator:
Hearne, Jean P.
Object Type:
Report
System:
The UNT Digital Library
Metal-Containing Organic and Carbon Aerogels for Hydrogen Storage
This document and the accompanying manuscript summarize the technical accomplishments of our one-year LDRD-ER effort. Hydrogen storage and hydrogen fuel cells are important components of the 2003 Hydrogen Fuel Initiative focused on the reduction of America's dependence on oil. To compete with oil as an energy source, however, one must be able to transport and utilize hydrogen at or above the target set by DOE (6 wt.% H{sub 2}) for the transportation sector. Other than liquid hydrogen, current technology falls well short of this DOE target. As a result, a variety of materials have recently been investigated to address this issue. Carbon nanostructures have received significant attention as hydrogen storage materials due to their low molecular weight, tunable microporosity and high specific surface areas. For example, the National Renewable Energy Laboratory (NREL) achieved 5 to 10 wt.% H{sub 2} storage using metal-doped carbon nanotubes. That study showed that the intimate mix of metal nanoparticles with graphitic carbon resulted in the unanticipated hydrogen adsorption at near ambient conditions. The focus of our LDRD effort was the investigation of metal-doped carbon aerogels (MDCAs) as hydrogen storage materials. In addition to their low mass densities, continuous porosities and high surface areas, these materials …
Date:
January 10, 2005
Creator:
Satcher, J. H. Jr.; Baumann, T. F. & Herberg, J. L.
Object Type:
Report
System:
The UNT Digital Library
Microscopic failure behavior of nanoporous Gold
Nanoporous metals have recently attracted considerable interest fueled by potential sensor and actuator applications. One of the key issues in this context is the synthesis of high yield strength materials. Nanoporous Au (np-Au) has been suggested as a candidate due to its monolithic character. The material can be synthesized by dealloying Ag-Au alloys, and exhibits an open sponge-like morphology of interconnecting Au ligaments with a typical pore size distribution on the nanometer length scale. Unfortunately, very little is known about the mechanical properties of np-Au besides a length-scale dependent ductile-brittle transition. A key question in this context is: what causes the macroscopic brittleness of np-Au? Is the normal dislocation-mediated plastic deformation suppressed in nanoscale Au ligaments, or is the brittleness a consequence of the macroscopic morphology? Here, we report on the fracture behavior of nanoporous Au studied by scanning electron microscopy. Specifically, we demonstrate the microscopic ductility of nanometer-sized Au ligaments. The observed fracture behavior seems to be general for nanoporous metals, and can be understood in terms of simple fuse networks.
Date:
January 10, 2005
Creator:
Biener, J.; Hodge, A. & Hamza, A.
Object Type:
Article
System:
The UNT Digital Library
Migration and Entrapment of DNAPLs in Heterogeneous Systems: Impact of Waste and Porous Medium Composition
Dense nonaqueous phase liquids (DNAPLs) pose a significant threat to soil and groundwater at Department of Energy (DOE) sites. Evidence suggests that subsurface wettability variations are present at many of these sites as a result of spatical and temporal variations in aqueous phase chemistry, contaminant aging, mineralogy and organic matter. The presence of such heterogeneity may significantly influence DNAPL migration and entrapment in the saturated zone.
Date:
January 10, 2005
Creator:
Abriola, Linda M. & Demond, Avery H.
Object Type:
Report
System:
The UNT Digital Library
Nuclear Weapons: Comprehensive Test Ban Treaty
A comprehensive test ban treaty, or CTBT, is the oldest item on the nuclear arms control agenda. Three treaties currently limit testing to underground only, with a maximum force equal to 150,000 tons of TNT. According to the Natural Resources Defense Council, the United States conducted 1,030 nuclear tests, the Soviet Union 715, the United Kingdom 45, France 210, and China 45. The last U.S. test was held in 1992; the last U.K. test, in 1991. Russia claims it has not conducted nuclear tests since 1991. An article of May 2002 reported “intelligence indicating that Russia is preparing to resume nuclear tests.” Russia rejected the charge.
Date:
January 10, 2005
Creator:
Medalia, Jonathan
Object Type:
Report
System:
The UNT Digital Library
Opportunities to Improve Timeliness of IRS Lien Releases
Correspondence issued by the Government Accountability Office with an abstract that begins "Among the Internal Revenue Service's (IRS) many tools to collect outstanding taxes is its ability to use the property of a taxpayer as security for an outstanding tax debt. IRS exercises this power when it files a federal tax lien against the property of a taxpayer. As part of its tax collection activities, IRS reported filing more than 548,000 tax liens against taxpayer property in fiscal year 2003. Since a lien encumbers taxpayer property, IRS's ability to file a lien is a powerful tool in enforcing the tax laws. With this power, however, comes the responsibility to ensure that liens are released timely once taxpayers satisfy their tax debt. The Internal Revenue Code (IRC) addresses timeliness by requiring IRS to release liens within 30 days of the tax debt's satisfaction. If IRS fails to timely release federal tax liens, taxpayers can suffer undue hardship and burden. Because federal tax liens appear on commercial credit reports, (1) businesses may be unable to obtain necessary credit because lenders may assume they are bad credit risks, (2) individuals may miss an opportunity to buy a home or an automobile because they …
Date:
January 10, 2005
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
An Overview of the Section 8 Housing Program
None
Date:
January 10, 2005
Creator:
McCarty, Maggie
Object Type:
Report
System:
The UNT Digital Library
Palestinians and Middle East Peace: Issues for the United States
None
Date:
January 10, 2005
Creator:
Mark, Clyde R.
Object Type:
Report
System:
The UNT Digital Library
Particulate Matter Air Quality Standards: Background and Current Developments
Following a brief summary of recent developments regarding the implementation and re-evaluation of the 1997 standards, this report provides a broad overview of the standard-setting process, followed by a description of revisions to earlier standards, legal challenges to the 1997 standard, and particulate matter health effects research. EPA’s ongoing progress in reviewing the 1997 standard is then summarized. Other activities that potentially impact the implementation and review of the particulate matter standards, such as other air quality regulations and proposed legislation, are also discussed in this report.
Date:
January 10, 2005
Creator:
Esworthy, Robert
Object Type:
Report
System:
The UNT Digital Library
Patent Law and Its Application to the Pharmaceutical Industry: An Examination of the Drug Price Competition and Patent Term Restoration Act of 1984 ("The Hatch-Waxman Act")
None
Date:
January 10, 2005
Creator:
Schacht, Wendy H. & Thomas, John R.
Object Type:
Report
System:
The UNT Digital Library
Plant Formate Dehydrogenase
The research in this study identified formate dehydrogenase, an enzyme that plays a metabolic role on the periphery of one-carbon metabolism, has an unusual localization in Arabidopsis thaliana and that the enzyme has an unusual kinetic plasticity. These properties make it possible that this enzyme could be engineered to attempt to engineer plants with an improved photosynthetic efficiency. We have produced transgenic Arabidopsis and tobacco plants with increased expression of the formate dehydrogenase enzyme to initiate further studies.
Date:
January 10, 2005
Creator:
Markwell, John
Object Type:
Report
System:
The UNT Digital Library
Prediction of Coal ash leaching behavior in acid mine water, comparison of laboratory and field studies
Strongly alkaline fluidized bed combustion ash is commonly used to control acid mine drainage in West Virginia coal mines. Objectives include acid neutralization and immobilization of the primary AMD pollutants: iron, aluminum and manganese. The process has been successful in controlling AMD though doubts remain regarding mobilization of other toxic elements present in the ash. In addition, AMD contains many toxic elements in low concentrations. And, each mine produces AMD of widely varying quality. So, predicting the effect of a particular ash on a given coal mine's drainage quality is of particular interest. In this chapter we compare the results of a site-specific ash leaching procedure with two large-scale field applications of FBC ash. The results suggested a high degree of predictability for roughly half of the 25 chemical parameters and poor predictability for the remainder. Of these, seven parameters were successfully predicted on both sites: acidity, Al, B, Ba, Fe, Ni and Zn while electrical conductivity, Ca, Cd, SO4, Pb and Sb were not successfully predicted on either site. Trends for the remaining elements: As, Ag, Be, Cu, Cr, Hg, Mg, Mn, pH, Se Tl and V were successfully predicted on one but not both mine sites.
Date:
January 10, 2005
Creator:
ANNA, KNOX
Object Type:
Report
System:
The UNT Digital Library
Reserve Component Personnel Issues: Questions and Answers
The term “Reserve Component” is often used to refer collectively to the seven individual reserve components of the armed forces: the Army National Guard of the The United States, the Army Reserve, the Naval Reserve, the Marine Corps Reserve, the Air National Guard of the United States, the Air Force Reserve, and the Coast Guard Reserve. The role of these seven reserve components, as codified in law at 10 U.S.C. 10102, is to “provide trained units and qualified persons available for active duty in the armed forces, in time of war or national emergency, and at such other times as the national security may require, to fill the needs of the armed forces whenever...more units and persons are needed than are in the regular components.”
Date:
January 10, 2005
Creator:
Kapp, Lawrence
Object Type:
Report
System:
The UNT Digital Library
Robust Nuclear Earth Penetrator Budget Request and Plan, FY2005-FY2009
Earth penetrator weapons often called “bunker busters,” burrow into the ground some tens of feet before detonating, greatly increasing their ability to destroy buried targets. The United States has several types of conventional earth penetrators. The current U.S. nuclear earth penetrator, the B61-11 bomb, cannot penetrate certainly types of terrain in which hardened underground facilities may be located, so the Air Force and the National Nuclear Security Administration (NNSA) are studying a more effective penetrator, the Robust Nuclear Earth Penetrator (RNEP).
Date:
January 10, 2005
Creator:
Medalia, Jonathan
Object Type:
Report
System:
The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 90, No. 103, Ed. 1 Monday, January 10, 2005
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 10, 2005
Creator:
Broaddus, Matthew B.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Syria: Political Conditions and Relations with the United States After the Iraq War
This report focuses on Syria's internal politics and the impact of hostilities in Iraq on Syria's stability and U.S.-Syrian relations. It outlines the development of the regime currently headed by President Bashar al-Asad and its support base; describes potential challenges to the regime; examines the effect of the Iraq war on Syrian domestic politics and U.S.-Syrian relations; and reviews U.S. policy options toward Syria.
Date:
January 10, 2005
Creator:
Prados, Alfred B. & Sharp, Jeremy M.
Object Type:
Report
System:
The UNT Digital Library
Taiwan in 2004: Elections, Referenda, and Other Democratic Challenges
None
Date:
January 10, 2005
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library