Basin Analysis and Petroleum System Characterization and Modeling, Interior Salt Basins, Central and Eastern Gulf of Mexico (open access)

Basin Analysis and Petroleum System Characterization and Modeling, Interior Salt Basins, Central and Eastern Gulf of Mexico

The principal research effort for Year 2 of the project is the determination of the burial and thermal maturation histories and basin modeling and petroleum system identification of the North Louisiana Salt Basin. In the first six (6) to nine (9) months of Year 2, the research focus is on the determination of the burial and thermal maturation histories and the remainder of the year the emphasis is on basin modeling and petroleum system identification. No major problems have been encountered to date, and the project is on schedule.
Date: March 31, 2005
Creator: Mancini, Ernest A.
Object Type: Report
System: The UNT Digital Library
Optimization of Comminution Circuit Throughput and Product Size Distribution by Simulation and Control (open access)

Optimization of Comminution Circuit Throughput and Product Size Distribution by Simulation and Control

The goal of this project is to improve energy efficiency of industrial crushing and grinding operations (comminution). Mathematical models of the comminution process are being used to study methods for optimizing the product size distribution, so that the amount of excessively fine material produced can be minimized. The goal is to save energy by reducing the amount of material that is ground below the target size, while simultaneously reducing the quantity of materials wasted as ''slimes'' that are too fine to be useful. This is being accomplished by mathematical modeling of the grinding circuits to determine how to correct this problem. The approaches taken included (1) Modeling of the circuit to determine process bottlenecks that restrict flow rates in one area while forcing other parts of the circuit to overgrind the material; (2) Modeling of hydrocyclones to determine the mechanisms responsible for retaining fine, high-density particles in the circuit until they are overground, and improving existing models to accurately account for this behavior; and (3) Evaluation of advanced technologies to improve comminution efficiency and produce sharper product size distributions with less overgrinding.
Date: March 31, 2005
Creator: Kawatra, S. K.; Eisele, T. C.; Weldum, T.; Larsen, D.; Mariani, R. & Pletka, J.
Object Type: Report
System: The UNT Digital Library
Design, Fabrication and Testing of an Infrared Ratio Pyrometer System for the Measurement of Gasifier Reaction Chamber Temperature (open access)

Design, Fabrication and Testing of an Infrared Ratio Pyrometer System for the Measurement of Gasifier Reaction Chamber Temperature

Texaco was awarded contract DE-FC26-99FT40684 from the U.S. DOE to design, build, bench test and field test an infrared ratio pyrometer system for measuring gasifier temperature. The award occurred in two phases. Phase 1, which involved designing, building and bench testing, was completed in September 2000, and the Phase 1 report was issued in March 2001. Phase 2 was completed in 2005, and the results of the field test are contained in this final report. Two test campaigns were made. In the first one, the pyrometer was sighted into the gasifier. It performed well for a brief period of time and then experienced difficulties in keeping the sight tube open due to a slag accumulation which developed around the opening of the sight tube in the gasifier wall. In the second test campaign, the pyrometer was sighted into the top of the radiant syngas cooler through an unused soot blower lance. The pyrometer experienced no more problems with slag occlusions, and the readings were continuous and consistent. However, the pyrometer readings were 800 to 900 F lower than the gasifier thermocouple readings, which is consistent with computer simulations of the temperature distribution inside the radiant syngas cooler. In addition, the …
Date: March 31, 2005
Creator: Leininger, Tom
Object Type: Report
System: The UNT Digital Library
Magnetic Properties of Radiation Damage in Pu and Pu Alloys (open access)

Magnetic Properties of Radiation Damage in Pu and Pu Alloys

Among the many exceptional properties of Pu is its apparent lack of either local moments or cooperative magnetism. Lashley et al., have recently noted that little experimental evidence for the existence of local moments or collective magnetism has been found in over 50 years. Nevertheless the search for local moments in Pu and Pu-alloys continues, why? Plutonium's physical properties: resistance, magnetic susceptibility, and heat capacity, all support a system with an enhanced electron density of states. Pu sits on the edge of both magnetism and superconductivity and possesses one of the highest elemental Pauli susceptibilities, consistent with a highly correlated electron system. The low-density {delta}-Pu has eluded full first principles description and is both a challenge and an area of active investigation for theorists. The complex changes associated with the transition between the light and heavy actinides happen within the phase diagram of Pu, thus making Pu an intriguing and challenging solid-state system for continuing experimental and theoretical investigation. Recently, Griveau et al., observed the variations in the resistance and superconducting properties of Am metal as a function of pressure to 27GPa and T>0.4K. They postulate that the interesting features in the superconducting critical temperature, T{sub c}, vs. pressure, indicate …
Date: March 31, 2005
Creator: McCall, S.; Fluss, M. J.; Chung, B.; Chapline, G.; McElfresh, M.; Jackson, D. et al.
Object Type: Article
System: The UNT Digital Library
The Temporary Assistance for Needy Families (TANF) Block Grant: Responses to Frequently Asked Questions (open access)

The Temporary Assistance for Needy Families (TANF) Block Grant: Responses to Frequently Asked Questions

None
Date: March 31, 2005
Creator: Falk, Gene
Object Type: Report
System: The UNT Digital Library
High-Energy-Density Coating of High Temperature Advanced Materials for Energy-Efficient Performance (open access)

High-Energy-Density Coating of High Temperature Advanced Materials for Energy-Efficient Performance

Laser and IR lamp based synthesis and oxidation/corrosion evaluation of Fe-Al coatings.
Date: March 31, 2005
Creator: Dahotre, Narentra B.; Sikka, Vinod K. & Blue, Craig A.
Object Type: Report
System: The UNT Digital Library
Radiation-induced decomposition of U(VI) alteration phases of UO{sub 2} (open access)

Radiation-induced decomposition of U(VI) alteration phases of UO{sub 2}

U{sup 6+} phases are common alteration products of spent nuclear fuel under oxidizing conditions, and they may potentially incorporate actinides, such as long-lived {sup 239}Pu and {sup 237}Np, delaying their transport to the biosphere. In order to evaluate the ballistic effects of {alpha}-decay events on the stability of the U{sup 6+}-phases, they report, for the first time, the results of ion beam irradiations (1.0 MeV Kr{sup 2+}) for six different structures of U{sup 6+}-phases: uranophane, kasolite, boltwoodite, saleeite, carnotite, and liebigite. The target uranyl-minerals were characterized by powder X-ray diffraction and identification confirmed by SAED in TEM. The TEM observation revealed no initial contamination of uraninite in these U{sup 6+} phases. All of the samples were irradiated with in situ TEM observation using 1.0 MeV Kr{sup 2+} in the IVEM (intermediate-voltage electron microscope) at the IVEM-Tandem Facility of Argonne National Laboratory. The ion flux was 6.3 x 10{sup 11} ions/cm{sup 2}/sec. The specimen temperatures during irradiation were 298 and 673 K, respectively. The Kr{sup 2+}-irradiation decomposed the U{sup 6+}-phases to nanocrystals of UO{sub 2} at doses as low as 0.006 dpa. The cumulative doses for the pure U{sup 6+}-phases, e.g., uranophane, at 0.1 and 1 m.y. are calculated to be …
Date: March 31, 2005
Creator: Utsunomiya, S. & Ewing, R.C.
Object Type: Report
System: The UNT Digital Library
Conference Paper/Proceedings White Paper Conference Results of March 3, 2005 Workshop in Irvine, CA (open access)

Conference Paper/Proceedings White Paper Conference Results of March 3, 2005 Workshop in Irvine, CA

A one-day workshop sponsored by UC Irvine's Center for Urban Infrastructure, bringing together 20 state departments of transportation and environmental quality to discuss national coordination on alternative fuels.
Date: March 31, 2005
Creator: Redman, Deborah Hart & Catz, Sarah L.
Object Type: Article
System: The UNT Digital Library
Campaign Finance: Constitutional and Legal Issues of Soft Money (open access)

Campaign Finance: Constitutional and Legal Issues of Soft Money

The term "soft money" generally refers to unregulated funds for election related activities that are not subject to the Federal Election Campaign Act's (FECA) source restrictions, contribution limits, and disclosure requirements. The Bipartisan Campaign Reform Act of 2002, which amended FECA and became effective on November 6, 2002, restricts the raising and spending of soft money. This report contains information on a summary of campaign financing, recent developments, background and analysis, definitions of Hard and Soft money in federal elections, political party soft money, soft money spent on issue advocacy, corporate and labor union soft money, the Bipartisan Campaign Reform Act of 2002, and additional related materials.
Date: March 31, 2005
Creator: Whitaker, L. Paige
Object Type: Report
System: The UNT Digital Library
SEPARATION OF FISCHER-TROPSCH WAX PRODUCTS FROM ULTRAFINE IRON CATALYST PARTICLES (open access)

SEPARATION OF FISCHER-TROPSCH WAX PRODUCTS FROM ULTRAFINE IRON CATALYST PARTICLES

In this reporting period, a fundamental filtration study was continued to investigate the separation of Fischer-Tropsch Synthesis (FTS) liquids from iron-based catalyst particles. The overall focus of the program is with slurry-phase FTS in slurry bubble column reactor systems. Hydrocarbon products must be separated from catalyst particles before being removed from the reactor system. An efficient wax product/catalyst separation system is a key factor for optimizing operating costs for iron-based slurry-phase FTS. Previous work has focused on catalyst particle attrition and the formation of ultra-fine iron carbide and/or carbon particles. With the current study, we are investigating how the filtration properties are affected by these chemical and physical changes of the catalyst slurry during activation/synthesis. In this reporting period, a series of crossflow filtration experiments were initiated to study the effect of olefins and oxygenates on the filtration flux and membrane performance. Iron-based FTS reactor waxes contain a significant amount of oxygenates, depending on the catalyst formulation and operating conditions. Mono-olefins and aliphatic alcohols were doped into an activated iron catalyst slurry (with Polywax) to test their influence on filtration properties. The olefins were varied from 5 to 25 wt% and oxygenates from 6 to 17 wt% to simulate a …
Date: March 31, 2005
Creator: Neathery, James K.; Jacobs, Gary & Davis, Burtron H.
Object Type: Report
System: The UNT Digital Library
Prescription Drug Importation and Internet Sales: A Legal Overview (open access)

Prescription Drug Importation and Internet Sales: A Legal Overview

None
Date: March 31, 2005
Creator: Feder, Jody
Object Type: Report
System: The UNT Digital Library
Consular Identification Cards: Domestic and Foreign Policy Implications, the Mexican Case, and Related Legislation (open access)

Consular Identification Cards: Domestic and Foreign Policy Implications, the Mexican Case, and Related Legislation

The debate about consular identification cards in the United States has centered around the matrícula consular, the consular identification card issued by Mexican consulates to Mexican citizens in the United States. In May 2003, the Treasury Department issued regulations allowing acceptance of the cards as proof of identity for the purpose of opening a bank account, and the cards are accepted for other purposes as well, including issuance of drivers’ licenses.
Date: March 31, 2005
Creator: Bruno, Andorra & Storrs, K. Larry
Object Type: Report
System: The UNT Digital Library
Detention of American Citizens as Enemy Combatants (open access)

Detention of American Citizens as Enemy Combatants

This report provides background information regarding the cases of two U.S. citizens deemed “enemy combatants,” Yaser Esam Hamdi, who has been returned to Saudi Arabia, and Jose Padilla, who remains in military custody. A brief introduction to the law of war pertinent to the detention of different categories of individuals is offered, followed by brief analyses of the main legal precedents invoked to support the President’s actions, as well as Ex parte Milligan, which some argue supports the opposite conclusion. The report concludes that historically, even during declared wars, additional statutory authority has been seen as necessary to validate the detention of citizens not members of any armed forces, casting in some doubt the argument that the power to detain persons arrested in a context other than actual hostilities is necessarily implied by an authorization to use force.
Date: March 31, 2005
Creator: Elsea, Jennifer K.
Object Type: Report
System: The UNT Digital Library
Gun Legislation in the 109th Congress (open access)

Gun Legislation in the 109th Congress

None
Date: March 31, 2005
Creator: Krouse, William J.
Object Type: Report
System: The UNT Digital Library
Argentina: Political Conditions and U.S. Relations (open access)

Argentina: Political Conditions and U.S. Relations

This report briefly discusses the political and economic conditions of Argentina, as well as its relationship with the U.S.
Date: March 31, 2005
Creator: Sullivan, Mark P.
Object Type: Report
System: The UNT Digital Library
The Budget for Fiscal Year 2006 (open access)

The Budget for Fiscal Year 2006

The budget report of the Congressional Budget Office (CBO), The Budget and Economic Outlook: Fiscal Years 2006-2015 (January 25, 2005), included baseline estimates (assuming current policies) for FY2005 through FY2015. Under the baseline assumptions, CBO estimated a FY2006 deficit of $295 billion (2.3% of gross domestic product [GDP]). This is smaller than CBO’s FY2005 baseline deficit estimate ($368 billion, 3.0% of GDP). CBO’s baseline estimates do not include assumptions about possible future legislation that may increase or decrease spending or receipts and therefore change the deficit. The baseline assumptions assume the continuation of current law, including that laws changing the level of future revenues or outlays will go into effect as scheduled.
Date: March 31, 2005
Creator: Winters, Philip D.
Object Type: Report
System: The UNT Digital Library
Indian Self-Determination and Education Assistance Act Contracts and Cherokee Nation of Oklahoma v. Leavitt: Agency Discretion to Fund Contract Support Costs (open access)

Indian Self-Determination and Education Assistance Act Contracts and Cherokee Nation of Oklahoma v. Leavitt: Agency Discretion to Fund Contract Support Costs

On March 1, 2005, the Supreme Court handed down its decision in Cherokee The nation of Oklahoma v. Leavitt. The conflicts in the case (actually two consolidated cases) involved federal agencies’ duty to fund contract support costs for contracts with Indian tribes under the Indian Self-Determination and Education Assistance Act (ISDA).
Date: March 31, 2005
Creator: Brooks, Nathan
Object Type: Report
System: The UNT Digital Library
The Economics of the Federal Budget Deficit (open access)

The Economics of the Federal Budget Deficit

In FY1998, federal budget receipts exceeded outlays for the first time since 1969. Those surpluses continued through FY2001. At one time, those surpluses had been projected to continue, but conditions have since changed. The economy went into recession in 2001, and a stimulus package was enacted. Since then, the budget has been in deficit. The actual unified budget deficit for FY2004 was $412.1 billion. In January 2005, the Congressional Budget Office projected that there would be a budget deficit of $368 billion in FY2005, and a deficit of $295 billion in FY2006.
Date: March 31, 2005
Creator: Cashell, Brian W.
Object Type: Report
System: The UNT Digital Library
Environmental Laws: Summaries of Statutes Administered by the Environmental Protection Agency (open access)

Environmental Laws: Summaries of Statutes Administered by the Environmental Protection Agency

A dozen major statutes form the legal basis for the programs of the Environmental Protection Agency (EPA). Many of these have been amended several times. The current provisions of each are briefly summarized in this report. The Pollution Prevention Act (PPA) seeks to prevent pollution through reduced generation of pollutants at their point of origin. The Clean Air Act (CAA) requires EPA to set mobile source limits, ambient air quality standards, hazardous air pollutant emission standards, standards for new pollution sources, and significant deterioration requirements; and to focus on areas that do not attain standards.
Date: March 31, 2005
Creator: Fletcher, Susan R.
Object Type: Report
System: The UNT Digital Library
The Endangered Species Act: A Primer (open access)

The Endangered Species Act: A Primer

The Endangered Species Act (ESA)1 receives significant congressional attention. The associated power and reach of its comprehensive protection for species identified as endangered or threatened with extinction has ignited concern that there be appropriate bounds on this power. The following discussion provides an overview and background on the various features of the ESA that contribute to its stature and yet spark an ongoing debate over its implementation.
Date: March 31, 2005
Creator: Baldwin, Pamela; Buck, Eugene H. & Corn, M. Lynne
Object Type: Report
System: The UNT Digital Library
The Endangered Species Act: A Primer (open access)

The Endangered Species Act: A Primer

The Endangered Species Act (ESA)1 receives significant congressional attention. The associated power and reach of its comprehensive protection for species identified as endangered or threatened with extinction has ignited concern that there be appropriate bounds on this power. The following discussion provides an overview and background on the various features of the ESA that contribute to its stature and yet spark an ongoing debate over its implementation.
Date: March 31, 2005
Creator: Baldwin, Pamela; Buck, Eugene H. & Corn, M. Lynne
Object Type: Report
System: The UNT Digital Library