94-1 R&D Program Annual Operating Plan (open access)

94-1 R&D Program Annual Operating Plan

The 94-1 R&D Program focuses on developing the technical basis for stabilizing and safely storing plutonium-bearing materials. To address these issues, we have in place a material identification and stabilization project, a surveillance and monitoring project, and a management team.
Date: September 1, 2003
Creator: Mason, Richard E. & Dominguez, Pamela D.
Object Type: Report
System: The UNT Digital Library
94-1 R&D program annual operating plan: Fiscal Year 2003 (open access)

94-1 R&D program annual operating plan: Fiscal Year 2003

The 94-1 R&D Program focuses on developing the technical basis for stabilizing and safely storing plutonium-bearing materials. To address these issues, we have in place a material identification and stabilization project, a surveillance and monitoring project, and a management team.
Date: September 1, 2003
Creator: Mason, Richard E. & Dominguez, Pamela D.
Object Type: Report
System: The UNT Digital Library
2003 U.S. Department of Energy Strategic Plan: Protecting National, Energy, and Economic Security with Advanced Science and Technology and Ensuring Environmental Cleanup (open access)

2003 U.S. Department of Energy Strategic Plan: Protecting National, Energy, and Economic Security with Advanced Science and Technology and Ensuring Environmental Cleanup

The Department of Energy contributes to the future of the Nation by ensuring energy security, maintaining the safety, security and reliability of the nuclear weapons stockpile, cleaning up the environment from the legacy of the Cold War, and developing innovations in science and technology. After 25 years in existence, the Department now operates 24 preeminent research laboratories and facilities and four power marketing administrations, and manages the environmental cleanup from 50 years of nuclear defense activities that impacted two million acres in communities across the country. The Department has an annual budget of about $23 billion and employs about 14,500 Federal and 100,000 contractor employees. The Department of Energy is principally a national security agency and all of its missions flow from this core mission to support national security. That is true not just today, but throughout the history of the agency. The origins of the Department can be traced to the Manhattan Project and the race to develop the atomic bomb during World War II. Following the war, Congress engaged in a vigorous and contentious debate over civilian versus military control of the atom. The Atomic Energy Act of 1946 settled the debate by creating the Atomic Energy Commission, …
Date: September 30, 2003
Creator: unknown
Object Type: Text
System: The UNT Digital Library
2w Laser Propagation and Raman Backscatter in Underdense Gas Bag Plasmas (open access)

2w Laser Propagation and Raman Backscatter in Underdense Gas Bag Plasmas

Recent 2{omega} gasbag experiments on the Helen laser studied single-beam propagation and backscatter as a function of gas density. We present a comprehensive analysis of these experiments using simulations in HYDRA. Post-processed results agree well with experimental fast x-ray images (FXI) showing stable laser propagation across the bag. The measured total stimulated Raman backscatter (SRS) increases with initial gas density up to n{sub e} {approx} 0.08 n{sub c}, then decreases. Near-backscatter images (NBI) show that the decrease in total SRS with increasing density is not due to scatter outside of the collection optics. SRS gain spectra calculated from the HYDRA results agree well with experimental streak spectra. The tilt and spread in wavelength of the spectra appear to be explained by gasbag hydrodynamics only, with no need to invoke filamentation. Axial density gradients and laser pump absorption may combine to detune and limit SRS gain at high density.
Date: September 5, 2003
Creator: Meezan, N.; Divol, L.; Suter, L.; Miller, M.; Stevenson, R. M.; Slark, G. et al.
Object Type: Article
System: The UNT Digital Library
78th Texas Legislature, Third Called Session, House Concurrent Resolution 9 (open access)

78th Texas Legislature, Third Called Session, House Concurrent Resolution 9

Concurrent resolution introduced by the Texas House of Representatives and Senate relating to granting each chamber permission to adjourn from Wednesday, Sep. 17 to Monday, Sep 22, 2003.
Date: September 26, 2003
Creator: Texas. Legislature. House of Representatives.
Object Type: Legislative Document
System: The Portal to Texas History
78th Texas Legislature, Third Called Session, Senate Concurrent Resolution 2 (open access)

78th Texas Legislature, Third Called Session, Senate Concurrent Resolution 2

Concurrent resolution introduced by the Texas Senate and House of Representatives recognizing the General Motors Arlington Assembly Plant on the occasion of its 50th anniversary in January 2004.
Date: 2003-09/2003-10
Creator: Texas. Legislature. Senate.
Object Type: Legislative Document
System: The Portal to Texas History
An Ab Initio Approach Towards Engineering Fischer-Tropsch Surface Chemistry (open access)

An Ab Initio Approach Towards Engineering Fischer-Tropsch Surface Chemistry

As the US seeks to develop an energy strategy that reduces the reliance on foreign oil, there is a renewed interest in the research and development of the Fischer Tropsch synthesis for converting syngas into long chain hydrocarbon products. This report investigates some of the basic elementary steps for Fischer-Tropsch synthesis over ideal Pt, Ru and carbon-covered Pt and Ru metal surfaces by using ab initio density functional theoretical calculations. We examine in detail the adsorption sites as well as the binding energies for C, CH, CH{sub 2}, CH3 and CH4 on Pt(111), Ru(0001), 2x2-C-Pt(111) and 2x2-C-Ru(0001). The results indicate that the binding energies increase with decreasing the hydrogen in the fragment molecule, i.e. CH{sub 4} < CH{sub 3} < CH{sub 2} < CH < C. More specifically the work analyzes the elementary steps involved in the activation of methane. This is simply the reverse set of steps necessary for the hydrogenation of C to CH{sub 4}. The results indicate that these hydrocarbon intermediates bind more strongly to Ru than Pt. The introduction of co-adsorbed carbon atoms onto both Ru(0001) as well as Pt(111) significantly increased the overall energies as well as the activation barriers for C-H bond activation. The …
Date: September 11, 2003
Creator: Neurock, Matthew & Chopra, Siddharth
Object Type: Report
System: The UNT Digital Library
Ab Initio Studies of Coke Formation on Ni Catalysts During Methane Reforming (open access)

Ab Initio Studies of Coke Formation on Ni Catalysts During Methane Reforming

The atomic-scale processes that control the formation of carbon deposits on Ni catalysts in reforming applications are poorly understood. Ab initio Density Functional Theory calculations have been used to examine several key elementary steps in the complex network of chemical reactions that precedes carbon formation on practical catalysts. Attention has been focused on the disproportionation of CO. A comparative study of this reaction on flat and stepped crystal planes of Ni has provided the first direct evidence that surface carbon formation is driven by elementary reactions occurring at defect sites on Ni catalysts.
Date: September 25, 2003
Creator: Sholl, David S.
Object Type: Report
System: The UNT Digital Library
Abrasion and erosion testing of materials used in power production from coal (open access)

Abrasion and erosion testing of materials used in power production from coal

The Albany Research Center (ARC) has a long history of studying abrasive wear, related to mineral testing, handling, and processing. The center has also been instrumental in the design and development of wear test procedures and equipment. Research capabilities at ARC include Pin-on-Drum, Pin-on-Disk, and Dry Sand/Rubber Wheel abrasion tests, Jaw Crusher gouging test, Ball-on-Ball Impact test, and Jet erosion tests. Abrasive and erosive wear studies have been used to develop both new alloys and improved heat treatments of commercial alloys. As part of ARC’s newest iteration on wear testing to evaluate materials for use in new and existing pulverized coal combustion and gasifier power systems, the ARC has designed and constructed a new High Temperature Hostile Atmosphere Erosion Wear Test (HAET). This new piece of test apparatus is designed for erosive particle velocities of 10-40 m/sec and temperatures from room temperature (23°C) to 800+°C, with special control over the gas atmosphere. A variable speed whirling arm design is used to vary the impact energy of the gravity fed erosive particles. The specimens are mounted at the edge of a disk and allow a full range of impingement angles to be selected. An electric furnace heats the specimens in an …
Date: September 1, 2003
Creator: Tylczak, Joseph H.; Adler, Thomas A. & Rawers, James C.
Object Type: Article
System: The UNT Digital Library
ABSOLUTE POLARIZED H-JET POLARIMETER DEVELOPMENT FOR RHIC. (open access)

ABSOLUTE POLARIZED H-JET POLARIMETER DEVELOPMENT FOR RHIC.

Status of the H-jet polarimeter development is reviewed. The preliminary results of atomic beam intensity and density measurements are presented.
Date: September 22, 2003
Creator: ZELENSKI,A. BRAVAR,A. GRAHAM,D. HAEBERLI,W. MAKDISI,Y. MAHLER,G. NASS,A. RITTER,J. ET AL.
Object Type: Article
System: The UNT Digital Library
Accounting Firm Consolidation: Selected Large Public Company Views on Audit Fees, Quality, Independence, and Choice (open access)

Accounting Firm Consolidation: Selected Large Public Company Views on Audit Fees, Quality, Independence, and Choice

A letter report issued by the General Accounting Office with an abstract that begins "The largest accounting firms, known as the "Big 4," currently audit over 78 percent of U.S. public companies and 99 percent of public company annual sales. To address concerns raised by this concentration and as mandated by the Sarbanes-Oxley Act of 2002, on July 30, 2003, GAO issued a report entitled Public Accounting Firms: Mandated Study on Consolidation and Competition, GAO-03-864. As part of that study, GAO surveyed a random sample of 250 public companies from the Fortune 1000 list; preliminary findings were included in the July report. This supplemental report details more comprehensively the 159 responses we received through August 11, 2003, focusing on (1) the relationship of their company with their auditor of record in terms of satisfaction, tenure relationship, and services provided; (2) the effects of consolidation on audit fees, quality, and independence; and (3) the potential implications of consolidation for competition and auditor choice."
Date: September 30, 2003
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Acoustic Probe for Solid-Gas-Liquid Suspension (open access)

Acoustic Probe for Solid-Gas-Liquid Suspension

The primary objective of the research project during the first funding period was to develop an acoustic probe to measure volume percent solids in solid-liquid slurries in the presence of small amounts of gas bubbles. This problem was addressed because of the great need for a non-invasive, accurate and reliable method for solids monitoring in liquid slurries in the presence of radiolytically generated gases throughout the DOE complex. These measurements are necessary during mobilization of salts and sediments in tanks, transport of these slurries in transfer lines to processing facilities across a site, and, in some instances, during high level waste processing. Although acoustic probes have been commonly used for monitoring flows in single-phase fluids (McLeod, 1967), their application to monitor two-phase mixtures has not yet fully realized its potential. A number of investigators in recent years have therefore been involved in developing probes for measuring the volume fractions in liquid solid suspensions (Atkinson and Kytomaa, 1993; Greenwood et al., 1993; Martin et al., 1995) and in liquid-liquid suspensions (Bonnet and Tavlarides, 1987; Tavlarides and Bonnet, 1988, Yi and Tavlarides, 1990; Tsouris and Tavlarides, 1993, Tsouris et al., 1995). In particular, Atkinson and Kytomaa (1993) showed that the acoustic technique …
Date: September 14, 2003
Creator: Tavlarides, L.L. & Sangani, Ashok
Object Type: Report
System: The UNT Digital Library
Actinide Measurements by Accelerator Mass Spectrometry at Lawrence Livermore National Laboratory (open access)

Actinide Measurements by Accelerator Mass Spectrometry at Lawrence Livermore National Laboratory

We report on the development of an accelerator mass spectrometry (AMS) system for the measurement of actinides at Lawrence Livermore National Laboratory. This AMS system is centered on a recently completed heavy isotope beam line that was designed particularly for high sensitivity, robust, high-throughput measurements of actinide concentrations and isotopic ratios. A fast isotope switching capability has been incorporated in the system, allowing flexibility in isotope selection and for the quasi-continuous normalization to a reference isotope spike. Initially, our utilization of the heavy isotope system has concentrated on the measurement of Pu isotopes. Under current operating conditions, background levels equivalent to {approx}1 x 10{sup 5} atoms are observed during routine {sup 239}Pu and {sup 240}Pu measurements. Measurements of samples containing {approx}10{sup 13} {sup 238}U atoms demonstrate that the system provides a {sup 238}U rejection factor during {sup 239}Pu measurements of {approx}10{sup 7}. Measurements of known materials, combined with results from an externally organized inter-comparison program, indicate that our {sup 239}Pu measurements are accurate and precise down to the {micro}Bq level ({approx}10{sup 6} atoms). Recently, we have investigated the performance of our heavy isotope AMS system in measurements of {sup 237}Np and {sup 236}U. Results of these investigations are discussed. The …
Date: September 25, 2003
Creator: Brown, T A; Marchetti, A A; Martinelli, R E; Cox, C C; Knezovich, J P & Hamilton, T F
Object Type: Article
System: The UNT Digital Library
Activities and Accomplishments in MY 2002/FY 2003: EPAct Fleet Information& Regulations Annual Report (open access)

Activities and Accomplishments in MY 2002/FY 2003: EPAct Fleet Information& Regulations Annual Report

From vehicle acquisition and credit trading to exemptions and outreach activity, the Annual Report summarizes the State& Alternative Fuel Provider Program accomplishments during MY 2002/FY2003.
Date: September 1, 2003
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Advanced Compressor Designs for High Energy Petawatt Pulse Generation (open access)

Advanced Compressor Designs for High Energy Petawatt Pulse Generation

We discuss compressor designs for a proposed multikilojoule, sub-picosecond beamline at the National Ignition Facility. A novel grating configuration reduces the size of the compressor chamber. Optimization of the design leads to a 4.7 x 1.4 x 0.4 m{sup 3} minimum compressor volume.
Date: September 9, 2003
Creator: Fittinghoff, D N; Wattellier, B & Barty, C P J
Object Type: Article
System: The UNT Digital Library
Advanced Cuttings Transport Study Quarterly Technical Report: July-September 2003 (open access)

Advanced Cuttings Transport Study Quarterly Technical Report: July-September 2003

The Quarter began with installing the new drill pipe, hooking up the new hydraulic power unit, completing the pipe rotation system (Task 4 has been completed), and making the SWACO choke operational. Detailed design and procurement work is proceeding on a system to elevate the drill-string section. The prototype Foam Generator Cell has been completed by Temco and delivered. Work is currently underway to calibrate the system. Literature review and preliminary model development for cuttings transportation with polymer foam under EPET conditions are in progress. Preparations for preliminary cuttings transport experiments with polymer foam have been completed. Two nuclear densitometers were re-calibrated. Drill pipe rotation system was tested up to 250 RPM. Water flow tests were conducted while rotating the drill pipe up to 100 RPM. The accuracy of weight measurements for cuttings in the annulus was evaluated. Additional modifications of the cuttings collection system are being considered in order to obtain the desired accurate measurement of cuttings weight in the annular test section. Cutting transport experiments with aerated fluids are being conducted at EPET, and analyses of the collected data are in progress. The printed circuit board is functioning with acceptable noise level to measure cuttings concentration at static …
Date: September 30, 2003
Creator: Miska, Stefan; Takach, Nicholas; Ashenayi, Kaveh; Yu, Mengjiao; Ahmed, Ramadan; Pickell, Mark et al.
Object Type: Report
System: The UNT Digital Library
Advanced Heterogeneous Reburn Fuel From Coal and Hog Manure: Final Report (open access)

Advanced Heterogeneous Reburn Fuel From Coal and Hog Manure: Final Report

This study was performed to investigate whether the nitrogen content inherent in hog manure and alkali used as a catalyst during processing could be combined with coal to produce a reburn fuel that would result in advanced reburning NO{sub x} control without the addition of either alkali or ammonia/urea. Fresh hog manure was processed in a cold-charge, 1-gal, batch autoclave system at 275 C under a reducing atmosphere in the presence of an alkali catalyst. Instead of the expected organic liquid, the resulting product was a waxy solid material. The waxy nature of the material made size reduction and feeding difficult as the material agglomerated and tended to melt, plugging the feeder. The material was eventually broken up and sized manually and a water-cooled feeder was designed and fabricated. Two reburn tests were performed in a pilot-scale combustor. The first test evaluated a reburn fuel mixture comprising lignite and air-dried, raw hog manure. The second test evaluated a reburn fuel mixture made of lignite and the processed hog manure. Neither reburn fuel reduced NO{sub x} levels in the combustor flue gas. Increased slagging and ash deposition were observed during both reburn tests. The material-handling and ash-fouling issues encountered during this …
Date: September 1, 2003
Creator: Jensen, Melanie D.; Timpe, Ronald C. & Laumb, Jason D.
Object Type: Report
System: The UNT Digital Library
ADVANCED MONITORING TO IMPROVE COMBUSTION TURBINE/COMBINED CYCLE CT/(CC) RELIABILITY, AVAILABILITY AND MAINTAINABILITY (RAM) (open access)

ADVANCED MONITORING TO IMPROVE COMBUSTION TURBINE/COMBINED CYCLE CT/(CC) RELIABILITY, AVAILABILITY AND MAINTAINABILITY (RAM)

Power generators are concerned with the maintenance costs associated with the advanced turbines that they are purchasing. Since these machines do not have fully established operation and maintenance (O&M) track records, power generators face financial risk due to uncertain future maintenance costs. This risk is of particular concern, as the electricity industry transitions to a competitive business environment in which unexpected O&M costs cannot be passed through to consumers. These concerns have accelerated the need for intelligent software-based diagnostic systems that can monitor the health of a combustion turbine in real time and provide valuable information on the machine's performance to its owner/operators. Such systems would interpret sensor and instrument outputs, correlate them to the machine's condition, provide interpretative analyses, forward projections of servicing intervals, estimate remaining component life, and identify faults. EPRI, Impact Technologies, Boyce Engineering, and Progress Energy have teamed to develop a suite of intelligent software tools integrated with a diagnostic monitoring platform that will, in real time, interpret data to assess the ''total health'' of combustion turbines. The Combustion Turbine Health Management System (CTHM) will consist of a series of dynamic link library (DLL) programs residing on a diagnostic monitoring platform that accepts turbine health data …
Date: September 30, 2003
Creator: Angello, Leonard
Object Type: Report
System: The UNT Digital Library
Advanced Sorbents as a Versatile Platform for Gas Separation (open access)

Advanced Sorbents as a Versatile Platform for Gas Separation

The program objective was to develop materials and processes for industrial gas separations to reduce energy use and enable waste reduction. The approach chosen combined novel oxygen selective adsorbents and pressure swing adsorption (PSA) processes. Preliminary materials development and process simulation results indicated that oxygen selective adsorbents could provide a versatile platform for industrial gas separations. If fully successful, this new technology offered the potential for reducing the cost of producing nitrogen/oxygen co-products, high purity nitrogen, argon, and possibly oxygen. The potential energy savings for the gas separations are appreciable, but the end users are the main beneficiaries. Lowering the cost of industrial gases expands their use in applications that can employ them for reducing energy consumption and emissions.
Date: September 30, 2003
Creator: Stephenson, Neil
Object Type: Report
System: The UNT Digital Library
Advanced Utility Metering; Period of Performance: April 23, 2002 - September 22, 2002 (open access)

Advanced Utility Metering; Period of Performance: April 23, 2002 - September 22, 2002

In support of federal agencies considering the approach to utility metering appropriate for their facilities, the U.S. Department of Energy Federal Energy Management Program offers this publication as an overview of options in metering technology, system architecture, implementation, and relative costs. It provides advanced metering systems information to help potential users specify, acquire, use, and expand systems. It also addresses basic security issues and provides case studies and information resources.
Date: September 1, 2003
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Adventures in Coulomb Gauge (open access)

Adventures in Coulomb Gauge

We study the phase structure of SU(2) gauge theories at zero and high temperature, with and without scalar matter fields, in terms of the symmetric/broken realization of the remnant gauge symmetry which exists after fixing to Coulomb gauge. The symmetric realization is associated with a linearly rising color Coulomb potential (which we compute numerically), and is a necessary but not sufficient condition for confinement.
Date: September 26, 2003
Creator: Greensite, J. & Olejnik, S.
Object Type: Article
System: The UNT Digital Library
AFCI Repository Impact Evaluation Report Systems Analysis Progress - FY03 (open access)

AFCI Repository Impact Evaluation Report Systems Analysis Progress - FY03

This activity will assess the waste management benefits from AFC, specifically both short and long term benefits for the U.S. geologic repository program. This includes quantitative evaluation of repository issues (heat load and thermal management, mass and volume, radiotoxicity and dose, waste form optimization, etc.) where AFC can provide the technical basis for improvements in cost, capacity and performance for a repository, and the technical potential to defer the need for additional repositories. Supporting analysis will be obtained from ANL, LANL and SRS for inclusion into an Interim Report that will serve as input to the ''Integrated Modeling'' and ''Economic Analysis'' activities, and a Final Report that will document the results of the activity. This activity will endeavor to establish cooperation with DOE-OCRWM to establish mutual understanding of potential repository impacts.
Date: September 12, 2003
Creator: Halsey, W G
Object Type: Report
System: The UNT Digital Library
Africa: U.S. Foreign Assistance Issues (open access)

Africa: U.S. Foreign Assistance Issues

This report discusses the issue of U.S. economic assistance to sub-Saharan Africa, highlighting the importance of continued assistance in light of U.S. national security and also various U.S.-led efforts to promote reform amongst African citizens themselves. U.S. assistance finds its way to Africa through a variety of channels, including the USAID-administered DA program, food aid programs, and indirect aid provided through international financial institutions and the United Nations.
Date: September 5, 2003
Creator: Copson, Raymond W.
Object Type: Report
System: The UNT Digital Library
Agricultural Disaster Assistance (open access)

Agricultural Disaster Assistance

The U.S. Department of Agriculture (USDA) offers several permanently authorized programs to help farmers recover financially from a natural disaster, including federal crop insurance, the non-insured assistance program and emergency disaster loans. In recent years, Congress frequently has made supplemental financial assistance available to farmers and ranchers on an ad-hoc basis, most notably in the form of direct crop disaster payments and emergency livestock assistance. Congress provided an estimated $3.1 billion of such assistance in the Consolidated Appropriations Act of 2003 (P.L. 108-7) for 2001 and 2002 crop and livestock losses. Some farm groups would like to see similar assistance provided for 2003 losses, particularly in regions of the Midwest and West that have experienced prolonged drought conditions. To date, no ad-hoc assistance has been made available for 2003 losses.
Date: September 17, 2003
Creator: Chite, Ralph M.
Object Type: Report
System: The UNT Digital Library