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1,963 Matching Results
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Faculty Recital: 2008-03-31 - John Holt, trumpet
Access:
Use of this item is restricted to the UNT Community
Recital performed at the UNT College of Music Recital Hall.
Date:
March 31, 2008
Creator:
Holt, John, 1959-
Object Type:
Sound
System:
The UNT Digital Library
Federal Contracting: Congressional Action Needed to Address Long-standing Problems with Reporting of Advisory and Assistance Services
A letter report issued by the Government Accountability Office with an abstract that begins "Since 1994, the Office of Management and Budget (OMB) has been required by law to collect and report obligations for advisory and assistance services (A&AS) in the President's budget. The initial intent for this requirement is not clear, however. The statutory definition of A&AS covers three broad categories of management and professional support services. For many years, GAO and others have reported on inaccuracies in agencies' reporting of A&AS obligations. This report follows up on GAO's past work, pursuant to the fiscal year 2007 Defense Authorization Act. GAO assessed (1) whether reported A&AS obligations are accurate or used for management purposes and (2) the extent to which A&AS contracts are used for recurring services and for longer than 5 years and the contract types and vehicles used. GAO analyzed legislative history and reviewed 334 randomly selected contract files across 10 agencies, the results of which are generalizable to locations visited."
Date:
March 31, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
The Federal Railroad Administration’s Train Horn Rule
None
Date:
March 31, 2008
Creator:
Peterman, David Randall
Object Type:
Report
System:
The UNT Digital Library
Field Validation of Toxicity Tests to Evaluate the Potential for Beneficial Use of Produced Water
This study investigated potential biological effects of produced water contamination derived from occasional surface overflow and possible subsurface intrusion at an oil production site along the shore of Skiatook Lake, Oklahoma. We monitored basic chemistry and acute toxicity to a suite of standard aquatic test species (fathead minnow-Pimephales promelas, Daphnia pulex, Daphnia magna, and Ceriodaphnia dubia) in produced water and in samples taken from shallow groundwater wells on the site. Toxicity identification evaluations and ion toxicity modeling were used to identify toxic constituents in the samples. Lake sediment at the oil production site and at a reference site were also analyzed for brine intrusion chemically and by testing sediment toxicity using the benthic invertebrates, Chironomus dilutus, and Hyallela azteca. Sediment quality was also assessed with in situ survival and growth studies with H. azteca and the Asian clam, Corbicula fluminea, and by benthic macroinvertebrate community sampling. The produced water was acutely toxic to the aquatic test organisms at concentrations ranging from 1% to 10% of the whole produced water sample. Toxicity identification evaluation and ion toxicity modeling indicated major ion salts and hydrocarbons were the primary mixture toxicants. The standardized test species used in the laboratory bioassays exhibited differences in …
Date:
March 31, 2008
Creator:
Bidwell, Joseph; Fisher, Jonathan & Cooper, Naomi
Object Type:
Report
System:
The UNT Digital Library
Financial Audit: Special Counsel Expenditures for the Six Months Ended September 30, 2007
A letter report issued by the Government Accountability Office with an abstract that begins "This report presents the results of our audit of expenditures reported by the Office of Special Counsel Patrick J. Fitzgerald for the 6 months ended September 30, 2007. The independent counsels were required under 28 U.S.C. 596 (c)(1) to prepare a statement of expenditures on a semiannual basis. Under 28 U.S.C. 596 (c)(2 ), we were required to conduct a financial review of a midyear statement and a financial audit of a year-end statement. We satisfied this requirement through semiannual financial audits of the statement of expenditures. For the 6 months ended September 30, 2007, there were no active independent counsels. However, we are required to perform a semiannual financial review of expenditures from the permanent indefinite appropriation used to pay special counsel Fitzgerald's expenses. While not required under the permanent indefinite appropriation to perform a financial audit, we have done so for special counsel Fitzgerald--as we previously performed for independent counsels approved under the expired law."
Date:
March 31, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Fuel-Flexible Gasification-Combustion Technology for Production of H2 and Sequestration-Ready CO2
In the near future, the nation will continue to rely on fossil fuels for electricity, transportation, and chemicals. It is necessary to improve both the process efficiency and environmental impact of fossil fuel utilization including greenhouse gas management. GE Global Research (GEGR) investigated an innovative fuel-flexible Unmixed Fuel Processor (UFP) technology with potential to produce H{sub 2}, power, and sequestration-ready CO{sub 2} from coal and other solid fuels. The UFP technology offers the long-term potential for reduced cost, increased process efficiency relative to conventional gasification and combustion systems, and near-zero pollutant emissions. GE was awarded a contract from U.S. DOE NETL to investigate and develop the UFP technology. Work started on the Phase I program in October 2000 and on the Phase II effort in April 2005. In the UFP technology, coal, water and air are simultaneously converted into (1) hydrogen rich stream that can be utilized in fuel cells or turbines, (2) CO{sub 2} rich stream for sequestration, and (3) high temperature/pressure vitiated air stream to produce electricity in a gas turbine expander. The process produces near-zero emissions with an estimated efficiency higher than Integrated Gasification Combined Cycle (IGCC) process with conventional CO{sub 2} separation. The Phase I R&D …
Date:
March 31, 2008
Creator:
Kulkarni, Parag; Guan, Jie; Subia, Raul; Cui, Zhe; Manke, Jeff; Frydman, Arnaldo et al.
Object Type:
Report
System:
The UNT Digital Library
Geomechanical Performance of Hydrate-Bearing Sediment in Offshore Environments
The objective of this multi-year, multi-institutional research project was to develop the knowledge base and quantitative predictive capability for the description of geomechanical performance of hydrate-bearing sediments (hereafter referred to as HBS) in oceanic environments. The focus was on the determination of the envelope of hydrate stability under conditions typical of those related to the construction and operation of offshore platforms. We have developed a robust numerical simulator of hydrate behavior in geologic media by coupling a reservoir model with a commercial geomechanical code. We also investigated the geomechanical behavior of oceanic HBS using pore-scale models (conceptual and mathematical) of fluid flow, stress analysis, and damage propagation. The objective of the UC Berkeley work was to develop a grain-scale model of hydrate-bearing sediments. Hydrate dissociation alters the strength of HBS. In particular, transformation of hydrate clusters into gas and liquid water weakens the skeleton and, simultaneously, reduces the effective stress by increasing the pore pressure. The large-scale objective of the study is evaluation of geomechanical stability of offshore oil and gas production infrastructure. At Lawrence Berkeley National Laboratory (LBNL), we have developed the numerical model TOUGH + Hydrate + FLAC3D to evaluate how the formation and disassociation of hydrates in …
Date:
March 31, 2008
Creator:
Holditch, Stephen; Patzek, Tad; Rutqvist, Jonny; Moridis, George & Plumb, Richard
Object Type:
Report
System:
The UNT Digital Library
Health and Safety Information: EPA and OSHA Could Improve Their Processes for Preparing Communication Products
A letter report issued by the Government Accountability Office with an abstract that begins "Agencies address their missions not only through regulations but also by issuing communication products--such as guidance, fact sheets, and brochures--that can provide crucial information to regulated parties and the public. Since 2000, the Occupational Safety and Health Administration (OSHA) and the Environmental Protection Agency's (EPA) Office of Prevention, Pesticides, and Toxic Substances (OPPTS) developed new versions of such products to address the potential hazards of exposure to asbestos in automotive brakes. GAO was asked to describe (1) how OSHA and OPPTS prepared their products on asbestos in automotive brakes, (2) the general processes that OSHA and OPPTS use to prepare their communication products, and (3) how these processes compare to those for rulemaking and how recent administration initiatives might affect them. GAO reviewed and analyzed available documents and interviewed officials at OSHA, OPPTS, and the Office of Management and Budget (OMB)."
Date:
March 31, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Health-Care-Associated Infections in Hospitals: Leadership Needed from HHS to Prioritize Prevention Practices and Improve Data on These Infections
A letter report issued by the Government Accountability Office with an abstract that begins "According to the Centers for Disease Control and Prevention (CDC), health-care-associated infections (HAI) are estimated to be 1 of the top 10 causes of death in the United States. HAIs are infections that patients acquire while receiving treatment for other conditions. GAO was asked to examine (1) CDC's guidelines for hospitals to reduce or prevent HAIs and what the Department of Health and Human Services (HHS) does to promote their implementation, (2) Centers for Medicare & Medicaid Services' (CMS) and hospital accrediting organizations' required standards for hospitals to reduce or prevent HAIs and how compliance is assessed, and (3) HHS programs that collect data related to HAIs and integration of the data across HHS. GAO reviewed documents and interviewed officials from CDC, CMS, the Agency for Healthcare Research and Quality (AHRQ), and accrediting organizations."
Date:
March 31, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
High Efficiency, Illumination Quality OLEDs for Lighting
The goal of the program was to demonstrate a 45 lumen per watt white light device based upon the use of multiple emission colors through the use of solution processing. This performance level is a dramatic extension of the team's previous 15 LPW large area illumination device. The fundamental material system was based upon commercial polymer materials. The team was largely able to achieve these goals, and was able to deliver to DOE a 90 lumen illumination source that had an average performance of 34 LPW a 1000 cd/m{sup 2} with peak performances near 40LPW. The average color temperature is 3200K and the calculated CRI 85. The device operated at a brightness of approximately 1000cd/m{sup 2}. The use of multiple emission colors particularly red and blue, provided additional degrees of design flexibility in achieving white light, but also required the use of a multilayered structure to separate the different recombination zones and prevent interconversion of blue emission to red emission. The use of commercial materials had the advantage that improvements by the chemical manufacturers in charge transport efficiency, operating life and material purity could be rapidly incorporated without the expenditure of additional effort. The program was designed to take maximum …
Date:
March 31, 2008
Creator:
Shiang, Joseph; Cella, James; Chichak, Kelly; Duggal, Anil; Janora, Kevin; Heller, Chris et al.
Object Type:
Report
System:
The UNT Digital Library
HIGH-POWER TURBODRILL AND DRILL BIT FOR DRILLING WITH COILED TUBING
Commercial introduction of Microhole Technology to the gas and oil drilling industry requires an effective downhole drive mechanism which operates efficiently at relatively high RPM and low bit weight for delivering efficient power to the special high RPM drill bit for ensuring both high penetration rate and long bit life. This project entails developing and testing a more efficient 2-7/8 in. diameter Turbodrill and a novel 4-1/8 in. diameter drill bit for drilling with coiled tubing. The high-power Turbodrill were developed to deliver efficient power, and the more durable drill bit employed high-temperature cutters that can more effectively drill hard and abrasive rock. This project teams Schlumberger Smith Neyrfor and Smith Bits, and NASA AMES Research Center with Technology International, Inc (TII), to deliver a downhole, hydraulically-driven power unit, matched with a custom drill bit designed to drill 4-1/8 in. boreholes with a purpose-built coiled tubing rig. The U.S. Department of Energy National Energy Technology Laboratory has funded Technology International Inc. Houston, Texas to develop a higher power Turbodrill and drill bit for use in drilling with a coiled tubing unit. This project entails developing and testing an effective downhole drive mechanism and a novel drill bit for drilling 'microholes' …
Date:
March 31, 2008
Creator:
Radtke, Robert; Glowka, David; Rai, Man Mohan; Conroy, David; Beaton, Tim; Seale, Rocky et al.
Object Type:
Report
System:
The UNT Digital Library
High-Strength / High Alkaline Resistant Fe-Phosphate Glass Fibers as Concrete Reinforcement
Calcium-iron-phosphate glasses were developed whose chemical durabilities in alkaline solutions (pH 13) were comparable or superior to those of commercial alkaline-resistant (AR) silica-based glasses. However, the tensile strength of Ca-Fe-phosphate fibers, after being exposed to alkaline environments, including wet Portland cement pastes, is lower than that of current AR silicate fibers. Another series of Ca-Fe-phosphate glasses were developed with excellent chemical durability in strong acidic solutions (H2SO4, HF), indicating potential applications where silica-based fibers degrade very quickly, including E-glass. The new Ca-Fe-phosphate glasses can be melted and processed 300 to 500°C lower than silica-based glasses. This offers the possibility of manufacturing glass fibers with lower energy costs by 40-60% and the potential to reduce manufacturing waste and lower gas emissions. It was found that Ca-Fe-phosphate melts can be continuously pulled into fibers depending on the slope of the viscosity-temperature curve and with viscosity ~100 poise, using multi-hole Pt/Rh bushings.
Date:
March 31, 2008
Creator:
Velez, Mariano
Object Type:
Report
System:
The UNT Digital Library
A High Temperature Electrochemical Energy Storage System Based on Sodium Beta-Alumina Solid Electrolyte (Base)
This report summarizes the work done during the period September 1, 2005 and March 31, 2008. Work was conducted in the following areas: (1) Fabrication of sodium beta{double_prime} alumina solid electrolyte (BASE) using a vapor phase process. (2) Mechanistic studies on the conversion of {alpha}-alumina + zirconia into beta{double_prime}-alumina + zirconia by the vapor phase process. (3) Characterization of BASE by X-ray diffraction, SEM, and conductivity measurements. (4) Design, construction and electrochemical testing of a symmetric cell containing BASE as the electrolyte and NaCl + ZnCl{sub 2} as the electrodes. (5) Design, construction, and electrochemical evaluation of Na/BASE/ZnCl{sub 2} electrochemical cells. (6) Stability studies in ZnCl{sub 2}, SnCl{sub 2}, and SnI{sub 4} (7) Design, assembly and testing of planar stacks. (8) Investigation of the effect of porous surface layers on BASE on cell resistance. The conventional process for the fabrication of sodium ion conducting beta{double_prime}-alumina involves calcination of {alpha}-alumina + Na{sub 2}CO{sub 3} + LiNO{sub 3} at 1250 C, followed by sintering powder compacts in sealed containers (platinum or MgO) at {approx}1600 C. The novel vapor phase process involves first sintering a mixture of {alpha}-alumina + yttria-stabilized zirconia (YSZ) into a dense ceramic followed by exposure to soda vapor at …
Date:
March 31, 2008
Creator:
Virkar, Anil
Object Type:
Report
System:
The UNT Digital Library
[Hypnotist and participant on stage]
Photograph of a hypnotist and one of the participants on stage during his act. They are facing the audience and the girl is holding out her hands to count her fingers. Other participants are sitting in chairs behind them.
Date:
March 31, 2008
Creator:
Evans, Rebecca
Object Type:
Photograph
System:
The UNT Digital Library
[Hypnotist performance at UNT]
Photograph of a hypnotist and the participants on stage during his act. He is standing facing them and is holding a microphone and they are all slumped over in their chairs facing the audience. Some are folded all the way over and others simply have their heads down.
Date:
March 31, 2008
Creator:
Evans, Rebecca
Object Type:
Photograph
System:
The UNT Digital Library
[Hypnotized students on stage]
Photograph of participants on stage during a hypnotist's act. They are sitting down and are slumped over in chairs facing the audience while under the hypnotist's influence.
Date:
March 31, 2008
Creator:
Evans, Rebecca
Object Type:
Photograph
System:
The UNT Digital Library
Identification of Key Barriers in Workforce Development
This report documents the identification of key barriers in the development of an adequate national security workforce as part of the National Security Preparedness Project, being performed under a Department of Energy/National Nuclear Security Administration grant. Many barriers exist that prevent the development of an adequate number of propertly trained national security personnel. Some barriers can be eliminated in a short-term manner, whereas others will involve a long-term strategy that takes into account public policy.
Date:
March 31, 2008
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Imaging Super-Deep Gas Plays Across the Gulf of Mexico Shelf with Multicomponent Seismic Technology
None
Date:
March 31, 2008
Creator:
Hardage, Bob A.; DeAngelo, Michael V.; Fomel, Sergey; Fouad, Khaled; Murray, Paul E.; Remington, Randy et al.
Object Type:
Report
System:
The UNT Digital Library
Improving Gas Flooding Efficiency
This study focuses on laboratory studies with related analytical and numerical models, as well as work with operators for field tests to enhance our understanding of and capabilities for more efficient enhanced oil recovery (EOR). Much of the work has been performed at reservoir conditions. This includes a bubble chamber and several core flood apparatus developed or modified to measure interfacial tension (IFT), critical micelle concentration (CMC), foam durability, surfactant sorption at reservoir conditions, and pressure and temperature effects on foam systems.Carbon dioxide and N{sub 2} systems have been considered, under both miscible and immiscible conditions. The injection of CO2 into brine-saturated sandstone and carbonate core results in brine saturation reduction in the range of 62 to 82% brine in the tests presented in this paper. In each test, over 90% of the reduction occurred with less than 0.5 PV of CO{sub 2} injected, with very little additional brine production after 0.5 PV of CO{sub 2} injected. Adsorption of all considered surfactant is a significant problem. Most of the effect is reversible, but the amount required for foaming is large in terms of volume and cost for all considered surfactants. Some foams increase resistance to the value beyond what is …
Date:
March 31, 2008
Creator:
Grigg, Reid; Svec, Robert; Zeng, Zheng; Mikhalin, Alexander; Lin, Yi; Yin, Guoqiang et al.
Object Type:
Report
System:
The UNT Digital Library
IN SITU Device for Real-Time Catalyst Deactivation Measurements
SCR catalyst management has become an important operations and maintenance activity for coal-fired utility boilers in the United States. To facilitate this activity, a method to determine Catalyst Activity in situ is being developed. This report describes the methodology and presents the results of a two ozone season demonstration conducted at Alabama Power Company's Gorgas Unit 10 during the 2005 and 2006 ozone seasons. The results showed that the in situ measurements are in good agreement with the laboratory measurements and the technique has some advantages over the traditional laboratory method of determining Catalyst Activity and Reactor Potential. SCR Performance is determined by the overall Reactor Potential (the product of the Catalyst Activity and the available surface area per unit of flue gas). The in situ approach provides a direct measurement of Reactor Potential under actual operating conditions, whereas laboratory measurements of Catalyst Activity need to be coupled with estimates of catalyst pluggage and flue gas flowrate in order to assess Reactor Potential. The project also showed that the in situ activity results can easily be integrated into catalyst management software to aid in making informed catalyst decisions.
Date:
March 31, 2008
Creator:
Research, Fossil Energy
Object Type:
Report
System:
The UNT Digital Library
Interim Status Report on Lead-Cooled Fast Reactor (Lfr) Research and Development.
This report discusses the status of Lead-Cooled Fast Reactor (LFR) research and development carried out during the first half of FY 2008 under the U.S. Department of Energy Generation IV Nuclear Energy Systems Initiative. Lead-Cooled Fast Reactor research and development has recently been transferred from Generation IV to the Reactor Campaign of the Global Nuclear Energy Partnership (GNEP). Another status report shall be issued at the end of FY 2008 covering all of the LFR activities carried out in FY 2008 for both Generation IV and GNEP. The focus of research and development in FY 2008 is an initial investigation of a concept for a LFR Advanced Recycling Reactor (ARR) Technology Pilot Plant (TPP)/demonstration test reactor (demo) incorporating features and operating conditions of the European Lead-cooled SYstem (ELSY) {approx} 600 MWe lead (Pb)-cooled LFR preconceptual design for the transmutation of waste and central station power generation, and which would enable irradiation testing of advanced fuels and structural materials. Initial scoping core concept development analyses have been carried out for a 100 MWt core composed of sixteen open-lattice 20 by 20 fuel assemblies largely similar to those of the ELSY preconceptual fuel assembly design incorporating fuel pins with mixed oxide (MOX) …
Date:
March 31, 2008
Creator:
Tzanos, C. P.; Sienicki, J. J.; Moisseytsev, A.; Smith, C. F.; de Caro, M.; Halsey, W. G. et al.
Object Type:
Report
System:
The UNT Digital Library
International Violence Against Women: U.S. Response and Policy Issues
"This report addresses causes, prevalence, and consequences of violence against women (VAW). It provides examples of completed and ongoing U.S. activities that address VAW directly..." (from Summary)
Date:
March 31, 2008
Creator:
Blanchfield, Luisa; Margesson, Rhoda; Seelke, Clare Ribando; Salaam-Blyther, Tiaji & Serafino, Nina M.
Object Type:
Report
System:
The UNT Digital Library
Iraq: Post-Saddam Governance and Security
None
Date:
March 31, 2008
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Iraq’s Debt Relief: Procedure and Potential Implications for International Debt Relief
None
Date:
March 31, 2008
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library