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Office of Scientific & Technical Information Technical Reports
566
Congressional Research Service Reports
95
Defense Base Closure and Realignment Commission
87
Government Accountability Office Reports
70
Texas Patents
55
Texas Laws and Resolutions Archive
54
Texas Attorney General Opinions
32
Technical Report Archive and Image Library
31
Texas State Publications
17
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1,020 Matching Results
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Achieve!, May 31 1991
Periodic newsletter discussing information related to student drop-out rates, relevant legislative issues, and prevention programs. This issue focuses on barriers to participation in school reform.
Date:
May 31, 1991
Creator:
Texas Research League
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Adaptive Position and Orientation Regulation for the Camera-in-hand Problem
None
Date:
May 31, 2001
Creator:
Setlur, P
Object Type:
Article
System:
The UNT Digital Library
Advanced Building Efficiency Testbed Initiative/Intelligent Workplace Energy Supply System; ABETI/IWESS
ABETI/IWESS is a project carried out by Carnegie Mellon's Center for Building Performance and Diagnostics, the CBPD, supported by the U.S. Department of Energy/EERE, to design, procure, install, operate, and evaluate an energy supply system, an ESS, that will provide power, cooling, heating and ventilation for CBPD's Intelligent Workplace, the IW. The energy sources for this system, the IWESS, are solar radiation and bioDiesel fuel. The components of this overall system are: (1) a solar driven cooling and heating system for the IW comprising solar receivers, an absorption chiller, heat recovery exchanger, and circulation pump; (2) a bioDiesel fueled engine generator with heat recovery exchangers, one on the exhaust to provide steam and the other on the engine coolant to provide heated water; (3) a ventilation system including an enthalpy recovery wheel, an air based heat pump, an active desiccant wheel, and an air circulation fan; and (4) various convective and radiant cooling/heating units and ventilation air diffusers distributed throughout the IW. The goal of the ABETI/IWESS project is to demonstrate an energy supply system for a building space that will provide a healthy, comfortable environment for the occupants and that will reduce the quantity of energy consumed in the …
Date:
May 31, 2008
Creator:
Archer, David H.; Betz, Frederik; Gu, Yun; Li, Rong; Marion, Flore; Masson, Sophie et al.
Object Type:
Report
System:
The UNT Digital Library
Advanced CIDI Emission Control System Development
Ford Motor Company, with ExxonMobil and FEV, participated in the Department of Energy's (DOE) Ultra-Clean Transportation Fuels Program with the goal to develop an innovative emission control system for light-duty diesel vehicles. The focus on diesel engine emissions was a direct result of the improved volumetric fuel economy (up to 50%) and lower CO2 emissions (up to 25%) over comparable gasoline engines shown in Europe. Selective Catalytic Reduction (SCR) with aqueous urea as the NOx reductant and a Catalyzed Diesel Particulate Filter (CDPF) were chosen as the primary emission control system components. The program expected to demonstrate more than 90% durable reduction in particulate matter (PM) and NOx emissions on a light-duty truck application, based on the FTP-75 drive cycle. Very low sulfur diesel fuel (<15 ppm-wt) enabled lower PM emissions, reduced fuel economy penalty due to the emission control system and improved long-term system durability. Significant progress was made toward a durable system to meet Tier 2 Bin 5 emission standards on a 6000 lbs light-duty truck. A 40% reduction in engine-out NOx emissions was achieved with a mid-size prototype diesel engine through engine recalibration and increased exhaust gas recirculation. Use of a rapid warm-up strategy and urea SCR …
Date:
May 31, 2006
Creator:
Lambert, Christine
Object Type:
Report
System:
The UNT Digital Library
Advanced conceptual design report for the Z-Beamlet laser backlighter
The Z-accelerator facility at Sandia National Laboratories (SNL) in Albuquerque, New Mexico, performs critical experiments on the physics of matter at extremely high energy density as part of the Department of Energy's nuclear weapons Stockpile Stewardship Program. In order to augment and enhance the value of experiments performed at this facility, the construction of a new x-ray backlighting diagnostic system is required. New information would be obtained by recording images and/or spectra of x-ray radiation transmitted through target materials as they evolve during Z-accelerator-driven experiments (or ''shots''). In this application, we generally think of the diagnostic x-rays as illumination produced behind the target materials and detected after passing through the Z-target. Hence the x-ray source is commonly called a ''backlighter.'' The methodology is a specific implementation of the general science known as x-ray radiography and/or x-ray spectroscopy. X-ray backlighter experiments have been performed in inertial confinement fusion (ICF) facilities in many countries. On Nova, experience with backlighters has been obtained since about 1986. An intense source of x-rays is produced by focusing one of its beams on a backlighter target nearby, while the other beams are used to create the high-energy-density conditions to be studied in the experiment. This conceptual …
Date:
May 31, 1999
Creator:
Caird, J
Object Type:
Report
System:
The UNT Digital Library
Advanced Electric Submersible Pump Design Tool for Geothermal Applications
Electrical Submersible Pumps (ESPs) present higher efficiency, larger production rate, and can be operated in deeper wells than the other geothermal artificial lifting systems. Enhanced Geothermal Systems (EGS) applications recommend lifting 300 C geothermal water at 80kg/s flow rate in a maximum 10-5/8-inch diameter wellbore to improve the cost-effectiveness. In this paper, an advanced ESP design tool comprising a 1D theoretical model and a 3D CFD analysis has been developed to design ESPs for geothermal applications. Design of Experiments was also performed to optimize the geometry and performance. The designed mixed-flow type centrifugal impeller and diffuser exhibit high efficiency and head rise under simulated EGS conditions. The design tool has been validated by comparing the prediction to experimental data of an existing ESP product.
Date:
May 31, 2012
Creator:
Qi, Xuele; Turnquist, Norman & Ghasripoor, Farshad
Object Type:
Article
System:
The UNT Digital Library
Advanced Instrumentation and Control Methods for Small and Medium Reactors with IRIS Demonstration
Development and deployment of small-scale nuclear power reactors and their maintenance, monitoring, and control are part of the mission under the Small Modular Reactor (SMR) program. The objectives of this NERI-consortium research project are to investigate, develop, and validate advanced methods for sensing, controlling, monitoring, diagnosis, and prognosis of these reactors, and to demonstrate the methods with application to one of the proposed integral pressurized water reactors (IPWR). For this project, the IPWR design by Westinghouse, the International Reactor Secure and Innovative (IRIS), has been used to demonstrate the techniques developed under this project. The research focuses on three topical areas with the following objectives. Objective 1 - Develop and apply simulation capabilities and sensitivity/uncertainty analysis methods to address sensor deployment analysis and small grid stability issues. Objective 2 - Develop and test an autonomous and fault-tolerant control architecture and apply to the IRIS system and an experimental flow control loop, with extensions to multiple reactor modules, nuclear desalination, and optimal sensor placement strategy. Objective 3 - Develop and test an integrated monitoring, diagnosis, and prognosis system for SMRs using the IRIS as a test platform, and integrate process and equipment monitoring (PEM) and process and equipment prognostics (PEP) toolboxes. …
Date:
May 31, 2011
Creator:
Hines, J. Wesley; Upadhyaya, Belle R.; Doster, J. Michael; Edwards, Robert M.; Lewis, Kenneth D.; Turinsky, Paul et al.
Object Type:
Report
System:
The UNT Digital Library
Advanced Nuclear Rocket Materials Research
A number of metals, carbides, nitrides, oxides, borides, and uranium gulfides are briefly evaluated concerning their possible applications as advanced nuclear rocket materials. (R.J.S.)
Date:
May 31, 1962
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advanced Pilot Training (T-X) Program: Background and Issues for Congress
This report discusses the Air Force's planned procurement of 350 new Advanced Pilot Training (APT T-X) aircraft and 46 Ground Based Training Systems (GBTS) at a cost valued at roughly $1.5 billion for the Research, Design, Test, and Evaluation phase of the program and estimated at $18 billion in future procurement costs. The APT T-X acquisition strategy poses potential oversight issues for Congress, including the following: Is the number of planned aircraft purchases sufficient? Given the reported pilot shortage, should the procurement be accelerated? What effects do increased F-35A & KC-46 purchases, along with development of the new Long Range Strike Bomber, B-21, have on the USAF budget and the feasibility of an additional Major Defense Acquisition Program? These questions and the Air Force's FY 2017 appropriations requests' for the program are addressed in this report.
Date:
May 31, 2017
Creator:
Coral, Ceir
Object Type:
Report
System:
The UNT Digital Library
Advances in coupled safety modeling using systems analysis and high-fidelity methods.
The potential for a sodium-cooled fast reactor to survive severe accident initiators with no damage has been demonstrated through whole-plant testing in EBR-II and FFTF. Analysis of the observed natural protective mechanisms suggests that they would be characteristic of a broad range of sodium-cooled fast reactors utilizing metal fuel. However, in order to demonstrate the degree to which new, advanced sodium-cooled fast reactor designs will possess these desired safety features, accurate, high-fidelity, whole-plant dynamics safety simulations will be required. One of the objectives of the advanced safety-modeling component of the Reactor IPSC is to develop a science-based advanced safety simulation capability by utilizing existing safety simulation tools coupled with emerging high-fidelity modeling capabilities in a multi-resolution approach. As part of this integration, an existing whole-plant systems analysis code has been coupled with a high-fidelity computational fluid dynamics code to assess the impact of high-fidelity simulations on safety-related performance. With the coupled capabilities, it is possible to identify critical safety-related phenomenon in advanced reactor designs that cannot be resolved with existing tools. In this report, the impact of coupling is demonstrated by evaluating the conditions of outlet plenum thermal stratification during a protected loss of flow transient. Outlet plenum stratification was …
Date:
May 31, 2010
Creator:
Fanning, T. H.; Thomas, J. W. & Division, Nuclear Engineering
Object Type:
Report
System:
The UNT Digital Library
Aerial gamma Ray and Magnetic Survey, Montrose Detail Area 1, Colorado. Final Report.
None
Date:
May 31, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Aerial gamma Ray and Magnetic Survey, Montrose Detail Area 2, Colorado. Final Report.
None
Date:
May 31, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Afghanistan Casualties: Military Forces and Civilians
This report collects statistics from a variety of sources on casualties sustained during Operation Enduring Freedom (OEF), which began on October 7, 2001, and is ongoing. OEF actions take place primarily in Afghanistan, but OEF casualties also include American casualties in other countries, listed within this report.
Date:
May 31, 2012
Creator:
Chesser, Susan G.
Object Type:
Report
System:
The UNT Digital Library
Afterburning and Combustion in Explosions in Barometric Calorimeters
None
Date:
May 31, 2007
Creator:
Reichenbach, H; Neuwald, P & Kuhl, A L
Object Type:
Article
System:
The UNT Digital Library
Agave: a biofuel feedstock for arid and semi-arid environments
Efficient production of plant-based, lignocellulosic biofuels relies upon continued improvement of existing biofuel feedstock species, as well as the introduction of newfeedstocks capable of growing on marginal lands to avoid conflicts with existing food production and minimize use of water and nitrogen resources. To this end, specieswithin the plant genus Agave have recently been proposed as new biofuel feedstocks. Many Agave species are adapted to hot and arid environments generally unsuitable forfood production, yet have biomass productivity rates comparable to other second-generation biofuel feedstocks such as switchgrass and Miscanthus. Agavesachieve remarkable heat tolerance and water use efficiency in part through a Crassulacean Acid Metabolism (CAM) mode of photosynthesis, but the genes andregulatory pathways enabling CAM and thermotolerance in agaves remain poorly understood. We seek to accelerate the development of agave as a new biofuelfeedstock through genomic approaches using massively-parallel sequencing technologies. First, we plan to sequence the transcriptome of A. tequilana to provide adatabase of protein-coding genes to the agave research community. Second, we will compare transcriptome-wide gene expression of agaves under different environmentalconditions in order to understand genetic pathways controlling CAM, water use efficiency, and thermotolerance. Finally, we aim to compare the transcriptome of A.tequilana with that of other …
Date:
May 31, 2011
Creator:
Gross, Stephen; Martin, Jeffrey; Simpson, June; Wang, Zhong & Visel, Axel
Object Type:
Article
System:
The UNT Digital Library
AGING PERFORMANCE OF MODEL 9975 PACKAGE FLUOROELASTOMER O-RINGS
The influence of temperature and radiation on Viton{reg_sign} GLT and GLT-S fluoroelastomer O-rings is an ongoing research focus at the Savannah River National Laboratory. The O-rings are credited for leaktight containment in the Model 9975 shipping package used for transportation of plutonium-bearing materials. At the Savannah River Site, the Model 9975 packages are being used for interim storage. Primary research efforts have focused on surveillance of O-rings from actual packages, leak testing of seals at bounding aging conditions and the effect of aging temperature on compression stress relaxation behavior, with the goal of service life prediction for long-term storage conditions. Recently, an additional effort to evaluate the effect of aging temperature on the oxidation of the materials has begun. Degradation in the mechanical properties of elastomers is directly related to the oxidation of the polymer. Sensitive measurements of the oxidation rate can be performed in a more timely manner than waiting for a measurable change in mechanical properties, especially at service temperatures. Measuring the oxidation rate therefore provides a means to validate the assumption that the degradation mechanisms(s) do not change from the elevated temperatures used for accelerated aging and the lower service temperatures. Monitoring the amount of oxygen uptake …
Date:
May 31, 2011
Creator:
Hoffman, E.; Daugherty, W.; Skidmore, E.; Dunn, K. & Fisher, D.
Object Type:
Article
System:
The UNT Digital Library
Air Pollution: Emission Sources Regulated by Multiple Clean Air Act Provisions
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the regulatory programs that target specific pollutants or sources of pollution under the 1990 Clean Air Act Amendments, focusing on: (1) examples of emission sources subject to regulation under more than one program authorized by the act; and (2) the status of the Environmental Protection Agency's (EPA) efforts to facilitate compliance for such sources."
Date:
May 31, 2000
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Air-Tight Heating-Stove
Patent for certain new and useful improvements in air tight heating stoves, including instructions and illustrations.
Date:
May 31, 1898
Creator:
Wilson, John Wesley & Wilson, William Wharton
Object Type:
Patent
System:
The Portal to Texas History
Aircraft Power-Plant Instruments
From Summary: "The report includes a description of the commonly used types and some others, the underlying principle utilized in the design, and some design data. The inherent errors of the instrument, the methods of making laboratory tests, descriptions of the test apparatus, and data in considerable detail in the performance of commonly used instruments are presented. Standard instruments and, in cases where it appears to be of interest, those used as secondary standards are described."
Date:
May 31, 1933
Creator:
Sontag, Harcourt & Brombacher, W. G.
Object Type:
Report
System:
The UNT Digital Library
AISI/DOE Advanced Process Control Program Vol. 5 of 6: Phase Measurement of Galvanneal
Augmentation of the internal software of a commercial X-ray fluorescence gauge is shown to enable the instrument to extend its continuous on-line real-time measurements of a galvanneal coating's total elemental content to encompass similar measurements of the relative thickness of the coating's three principal metallurgical phases. The mathematical structure of this software augmentation is derived from the theory of neural networks. The performance of the augmented gauge is validated by comparing the gauge implied real-time phase distribution with the phase distribution independently measured off-line on between the gauge and laboratory measurements and to suggest preferred approaches to be followed in future application of the augmented gauge.
Date:
May 31, 1999
Creator:
Burnett, Cristopher; Guel, Ronald; Philips, James R.; Lowry, L. & Tai, Beverly
Object Type:
Report
System:
The UNT Digital Library
AlGaN UV LED and Photodiodes Radiation Hardness and Space Qualifications and Their Applications in Space Science and High Energy Density Physics
This presentation provides an overview of robust, radiation hard AlGaN optoelectronic devices and their applications in space exploration & high energy density physics. Particularly, deep UV LED and deep UV photodiodes are discussed with regard to their applications, radiation hardness and space qualification. AC charge management of UV LED satellite payload instruments, which were to be launched in late 2012, is covered.
Date:
May 31, 2011
Creator:
Sun, K. X.
Object Type:
Article
System:
The UNT Digital Library
Alumina-Forming Austenitics: A New Approach to Thermal and Degradation Resistant Stainless Steels for Industrial Use
A series of developmental AFA alloys was selected for study based on: 25 Ni wt.% (alloys A-F), 20 wt% Ni (alloys G-H), and 12 Ni wt.% (alloys I-L). An emphasis in this work was placed on the lower alloy content direction for AFA alloys to reduce alloy raw material cost, rather than more highly alloyed and costly AFA alloys for higher temperature performance. Alloys A-D explored the effects of Al (3-4 wt.%) and C (0.05-0.2 wt.%) in the Fe-25Ni-14Cr-2Mn-2Mo-1W-1Nb wt.% base range; alloys E and F explored the effects of removing costly Mo and W additions in a Fe-25Ni-14Cr-4Al-2.5Nb-2Mn-0.2C base, alloys G and H examined Nb (1-2.5wt.%) and removal of Mo, W in a Fe-20Ni-14Cr-3Al-2Mn-0.2 C wt.% base; and alloys I-L examined effects of C (0.1-0.2 wt.%) and Mn (5-10 wt.%) on a low cost Fe-14Cr-12Ni-3Cu-2.5Al wt.% base (no Mo, W additions). Creep testing resulted in elemental trends that included the beneficial effect of higher carbon and lower niobium in 20-25%Ni AFA alloys and, the beneficial of lower Mn in 12%Ni AFA alloys. Corrosion tests in steam and sulfidation-oxidation environments showed, in general, these alloys were capable of a ten-fold improvement in performance when compared to conventional austenitic stainless steels. …
Date:
May 31, 2012
Creator:
Helmick, David A; Magee, John H & Brady, Michael P
Object Type:
Report
System:
The UNT Digital Library
The Amending Process in the House of Representatives
This report consists of the amending process in the house of representatives.
Date:
May 31, 2007
Creator:
Davis, Christopher M.
Object Type:
Report
System:
The UNT Digital Library
American Recovery and Reinvestment Act ( ARRA) FEMP Technical Assistance, U.S. General Services Administration - Project 194 U.S. Custom Cargo Inspection Facility, Detroit, MI
This report documents the findings of an on-site audit of the U.S. Customs Cargo Inspection Facility (CIF) in Detroit, Michigan. The federal landlord for this building is the General Services Administration (GSA). The focus of the audit was to identify various no-cost or low-cost energy-efficiency opportunities that, once implemented, would reduce electrical and gas consumption and increase the operational efficiency of the building. This audit also provided an opportunity to identify potential capital cost projects that should be considered in the future to acquire additional energy (electric and gas) and water savings to further increase the operational efficiency of the building.
Date:
May 31, 2010
Creator:
Arends, J. & Sandusky, William F.
Object Type:
Report
System:
The UNT Digital Library