Collection
Office of Scientific & Technical Information Technical Reports
5,288
Congressional Research Service Reports
1,828
Government Accountability Office Reports
904
Texas Laws and Resolutions Archive
376
Texas State Publications
214
Texas Attorney General Opinions
94
Texas State Auditor's Office: Reports
59
Texas Register
42
End of Term Publications
26
9/11 Commission Records
25
10 More
Country
States
Decade
Month
8,914 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
8,914
next
The 2009 H1N1 "Swine Flu" Outbreak: An Overview
This report provides an introduction to the situation regarding the potential of a global human influenza pandemic caused by the new H1N1 flu strain. It includes a brief chronology of events; a discussion of key actions taken and authorities invoked by the WHO and the U.S. government; and information about key U.S. government pandemic flu planning documents.
Date:
April 30, 2009
Creator:
Lister, Sarah A. & Redhead, C. S.
Object Type:
Report
System:
The UNT Digital Library
Advanced Waveform Simulation for Seismic Monitoring Events
High-Resolution Source Parameters using Calibration from Ambient Seismic Noise (ASN) Zhongwen Zhan, Shengji Wei, Sidao Ni, and Don V. Helmberger Abstract Several new methods have been developed to retrieve local Green's functions based on the cross-correlation of ambient seismic noise (station-to-station) and conventional (source-to-station) inversions. The latter methods provide the most broadband results but require accurate source parameters for phase-delay recovery which depends on the starting model. Considerable progress is being made in providing such information from 3D modeling, Tape et al. (2008), using Adjoint Tomography. But to match waveforms for the recent Chino Hills event still requires shifting synthetics to align on data. This means that it is difficult to use 3D simulations to refine source locations in near-real time. We can avoid the 3D problems by applying the CAP method and storing shifts from past events, Tan (2006), and/or using ASN, Shapiro et al. (2005), to predict lags for surface waves. Here, we directly compare results from CAP predictions with ASN results using stations near the Chino Hills event. We use the same SC seismic model as used in the Library of Earthquakes to generate Green's functions for noise (single force) for comparison with ASN correlations and allow …
Date:
April 30, 2009
Creator:
Helmberger, Donald V.; Tromp, Jeroen & Rodgers, Arthur J.
Object Type:
Report
System:
The UNT Digital Library
Albeni Falls Bull Trout Passage 2008 Cumulative Status Report History.
None
Date:
April 30, 2009
Creator:
McLellan, Holly
Object Type:
Report
System:
The UNT Digital Library
Application of Self-Propagating High Temperature Synthesis to the Fabrication of Actinide Bearing Nitride and Other Ceramic Nuclear Fuels
The project uses an exothermic combustion synthesis reaction, termed self-propagating high-temperature synthesis (SHS), to produce high quality, reproducible nitride fuels and other ceramic type nuclear fuels (cercers and cermets, etc.) in conjunction with the fabrication of transmutation fuels. The major research objective of the project is determining the fundamental SHS processing parameters by first using manganese as a surrogate for americium to produce dense Zr-Mn-N ceramic compounds. These fundamental principles will then be transferred to the production of dense Zr-Am-N ceramic materials. A further research objective in the research program is generating fundamental SHS processing data to the synthesis of (i) Pu-Am-Zr-N and (ii) U-Pu-Am-N ceramic fuels. In this case, Ce will be used as the surrogate for Pu, Mn as the surrogate for Am, and depleted uranium as the surrogate for U. Once sufficient fundamental data has been determined for these surrogate systems, the information will be transferred to Idaho National Laboratory (INL) for synthesis of Zr-Am-N, Pu-Am-Zr-N and U-Pu-Am-N ceramic fuels. The high vapor pressures of americium (Am) and americium nitride (AmN) are cause for concern in producing nitride ceramic nuclear fuel that contains Am. Along with the problem of Am retention during the sintering phases of current …
Date:
April 30, 2009
Creator:
John J. Moore, Marissa M. Reigel, Collin D. Donohoue
Object Type:
Report
System:
The UNT Digital Library
BENCHMARKING UPGRADED HOTSPOT DOSE CALCULATIONS AGAINST MACCS2 RESULTS
The radiological consequence of interest for a documented safety analysis (DSA) is the centerline Total Effective Dose Equivalent (TEDE) incurred by the Maximally Exposed Offsite Individual (MOI) evaluated at the 95th percentile consequence level. An upgraded version of HotSpot (Version 2.07) has been developed with the capabilities to read site meteorological data and perform the necessary statistical calculations to determine the 95th percentile consequence result. These capabilities should allow HotSpot to join MACCS2 (Version 1.13.1) and GENII (Version 1.485) as radiological consequence toolbox codes in the Department of Energy (DOE) Safety Software Central Registry. Using the same meteorological data file, scenarios involving a one curie release of {sup 239}Pu were modeled in both HotSpot and MACCS2. Several sets of release conditions were modeled, and the results compared. In each case, input parameter specifications for each code were chosen to match one another as much as the codes would allow. The results from the two codes are in excellent agreement. Slight differences observed in results are explained by algorithm differences.
Date:
April 30, 2009
Creator:
Brotherton, Kevin
Object Type:
Article
System:
The UNT Digital Library
Biomonitoring: EPA Needs to Coordinate Its Research Strategy and Clarify Its Authority to Obtain Biomonitoring Data
A letter report issued by the Government Accountability Office with an abstract that begins "Biomonitoring, which measures chemicals in people's tissues or body fluids, has shown that the U.S. population is widely exposed to chemicals used in everyday products. Some of these have the potential to cause cancer or birth defects. Moreover, children may be more vulnerable to harm from these chemicals than adults. The Environmental Protection Agency (EPA) is authorized under the Toxic Substances Control Act (TSCA) to control chemicals that pose unreasonable health risks. GAO was asked to review the (1) extent to which EPA incorporates information from biomonitoring studies into its assessments of chemicals, (2) steps that EPA has taken to improve the usefulness of biomonitoring data, and (3) extent to which EPA has the authority under TSCA to require chemical companies to develop and submit biomonitoring data to EPA."
Date:
April 30, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Cambodia: Background and U.S. Relations
This report provides historical context, discusses political and economic developments, and raises policy issues in Cambodia that affect U.S.-Cambodian relations. These issues include human rights, bilateral trade, U.S. foreign assistance to Cambodia, terrorism, HIV/AIDS, the Khmer Rouge tribunal, and Cambodia's relations with its southeast Asian neighbors and China.
Date:
April 30, 2009
Creator:
Lum, Thomas
Object Type:
Report
System:
The UNT Digital Library
Combining Multicomponent Seismic Attributes, New Rock Physics Models, and In Situ Data to Estimate Gas-Hydrate Concentrations in Deep-Water, Near-Seafloor Strata of the Gulf of Mexico
The Bureau of Economic Geology was contracted to develop technologies that demonstrate the value of multicomponent seismic technology for evaluating deep-water hydrates across the Green Canyon area of the Gulf of Mexico. This report describes the methodologies that were developed to create compressional (P-P) and converted-shear (P-SV) images of near-seafloor geology from four-component ocean-bottom-cable (4C OBC) seismic data and the procedures used to integrate P-P and P-SV seismic attributes with borehole calibration data to estimate hydrate concentration across two study areas spanning 16 and 25 lease blocks (or 144 and 225 square miles), respectively. Approximately 200 km of two-dimensional 4C OBC profiles were processed and analyzed over the course of the 3-year project. The strategies we developed to image near-seafloor geology with 4C OBC data are unique, and the paper describing our methodology was peer-recognized with a Best Paper Award by the Society of Exploration Geophysicists in the first year of the project (2006). Among the valuable research findings demonstrated in this report, the demonstrated ability to image deep-water near-seafloor geology with sub-meter resolution using a standard-frequency (10-200 Hz) air gun array on the sea surface and 4C sensors on the seafloor has been the accomplishment that has received the …
Date:
April 30, 2009
Creator:
Geology, Bureau of Economic
Object Type:
Report
System:
The UNT Digital Library
Commissioning Results of the Upgraded Neutralized Drift Compression Experiment
Recent changes to the NDCX beamline offer the promise of higher charge compressed bunches (>15nC), with correspondingly large intensities (>500kW/cm2), delivered to the target plane for ion-beam driven warm dense matter experiments. We report on commissioning results of the upgraded NDCX beamline that includes a new induction bunching module with approximately twice the volt-seconds and greater tuning flexibility, combined with a longer neutralized drift compression channel.
Date:
April 30, 2009
Creator:
Lidia, S. M.; Roy, P. K.; Seidl, P. A.; Waldron, W. L. & Gilson, E. P.
Object Type:
Article
System:
The UNT Digital Library
Counter-Rotating Tandem Motor Drilling System
Gas Technology Institute (GTI), in partnership with Dennis Tool Company (DTC), has worked to develop an advanced drill bit system to be used with microhole drilling assemblies. One of the main objectives of this project was to utilize new and existing coiled tubing and slimhole drilling technologies to develop Microhole Technology (MHT) so as to make significant reductions in the cost of E&P down to 5000 feet in wellbores as small as 3.5 inches in diameter. This new technology was developed to work toward the DOE's goal of enabling domestic shallow oil and gas wells to be drilled inexpensively compared to wells drilled utilizing conventional drilling practices. Overall drilling costs can be lowered by drilling a well as quickly as possible. For this reason, a high drilling rate of penetration is always desired. In general, high drilling rates of penetration (ROP) can be achieved by increasing the weight on bit and increasing the rotary speed of the bit. As the weight on bit is increased, the cutting inserts penetrate deeper into the rock, resulting in a deeper depth of cut. As the depth of cut increases, the amount of torque required to turn the bit also increases. The Counter-Rotating Tandem …
Date:
April 30, 2009
Creator:
Perry, Kent
Object Type:
Report
System:
The UNT Digital Library
Country Report on Building Energy Codes in the United States
This report is part of a series of reports on building energy efficiency codes in countries associated with the Asian Pacific Partnership (APP) - Australia, South Korea, Japan, China, India, and the United States of America (U.S.). This reports gives an overview of the development of building energy codes in U.S., including national energy policies related to building energy codes, history of building energy codes, recent national projects and activities to promote building energy codes. The report also provides a review of current building energy codes (such as building envelope, HVAC, lighting, and water heating) for commercial and residential buildings in the U.S.
Date:
April 30, 2009
Creator:
Halverson, Mark A.; Shui, Bin & Evans, Meredydd
Object Type:
Report
System:
The UNT Digital Library
A [Cyclentetrakis(methylene)]tetrakis[2-hydroxybenzamide]Ligand That Complexes and Sensitizes Lanthanide(III) Ions
The synthesis of a cyclen derivative containing four isophthalamide groups (L{sup 1}) is described. The spectroscopic properties of the Ln(III) complexes of L{sup 1} (Ln = Gd, Tb, Yb, Eu) reveal changes of the UV/visible absorption, circular dichroism absorption, luminescence and circularly polarized luminescence properties. It is shown that at least two metal complex species are present in solution, whose relative amounts are pH dependent. When at pH > 8.0, an intense long lived emission is observed (for [L{sup 1}Tb] and [L{sup 1}Yb]) while at pH < 8.0, a weaker, shorter-lived species predominates. Unconventional Ln(III) emitters (Pr, Nd, Sm, Dy and Tm) were sensitized in basic solution, both in the visible and in the near infra-red, to measure the emission of these ions.
Date:
April 30, 2009
Creator:
D'Aleo, Anthony; Xu, Jide; Do, King; Muller, Gilles & Raymond, Kenneth N.
Object Type:
Article
System:
The UNT Digital Library
Defense Acquisitions: Charting a Course for Lasting Reform
Testimony issued by the Government Accountability Office with an abstract that begins "Since 1990, GAO has designated the Department of Defense's (DOD) management of its major weapon acquisitions as a high-risk area; however DOD's problems delivering weapon systems on time, at the estimated cost, in the planned amounts, and with the promised performance go back decades. Congress and DOD have continually explored ways to improve acquisition outcomes, yet problems persist. The committee asked GAO to testify on measures needed to reform the acquisition of major weapon systems and related legislative proposals. Specifically, this statement will describe the poor outcomes on weapon system investments that make reform imperative; attributes of the requirements, funding, and acquisition processes that will need to change for reform to be effective; and positive steps that Congress and DOD have taken to improve weapon program outcomes. The statement will also examine other factors that should be considered as the committee moves forward with its reform efforts. The testimony is drawn from GAO's body of work on DOD's requirements, funding, and acquisition processes. GAO has made numerous recommendations aimed at improving DOD's management of its major weapon acquisitions, but it is not making any new recommendations in this …
Date:
April 30, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Determining Adult Pacific Lamprey Abundance and Spawning Habitat in the Lower Deschutes River Sub-Basin, Oregon, 2008 Annual Report.
An adult Pacific lamprey (Lampetra tridentata) escapement estimate was generated in the lower Deschutes River during run year 2008. This included a mark-recapture study to determine adult abundance and a tribal subsistence creel. Fish measuring less than 10.5 cm received two marks for the mark-recapture estimate while those measuring greater than 10.5 cm were surgically implanted with radio transmitters to monitor migration upstream of Sherars Falls (rkm 70.4). Radio telemetry was used to determine habitat, focal spawning areas and spawn timing. All fish were collected at the Sherars Falls fish ladder from July-October 2008 using a long handled dip-net. Escapement was generated using a two event mark-recapture experiment. Adult lamprey populations were estimated at 3,471 (95% CI = 2,384-5,041; M = 101; C = 885 R = 25) using Chapman's modification of the Peterson estimate. The relative precision around the estimate was 31.42. Tribal harvest was approximately 806 adult lamprey (95% CI = +/- 74) with a total escapement of 2,669. Fourteen lamprey received radio tags and were released at Lower Blue Hole recreation site (rkm 77.3). Movement was recorded by mobile, fixed site and aerial telemetry methods. Upstream movements of lamprey were documented from July through December 2008 with …
Date:
April 30, 2009
Creator:
Fox, Matt & Graham, Jennifer C.
Object Type:
Report
System:
The UNT Digital Library
Ecological Monitoring and Compliance Program 2008 Report
The Ecological Monitoring and Compliance Program, funded through the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office (NNSA/NSO), monitors the ecosystem of the Nevada Test Site (NTS) and ensures compliance with laws and regulations pertaining to NTS biota. This report summarizes the program’s activities conducted by National Security Technologies, LLC (NSTec), during calendar year 2008. Program activities included (a) biological surveys at proposed construction sites, (b) desert tortoise compliance, (c) ecosystem mapping and data management, (d) sensitive plant species monitoring, (e) sensitive and protected/regulated animal monitoring, (f) habitat monitoring, (g) habitat restoration monitoring, and (h) monitoring of the Nonproliferation Test and Evaluation Complex (NPTEC).
Date:
April 30, 2009
Creator:
Dennis J. Hansen, David C. Anderson, Derek B. Hall, Paul D. Greger, W. Kent Ostler
Object Type:
Report
System:
The UNT Digital Library
Enabling Technologies for Ceramic Hot Section Components
Silicon-based ceramics are attractive materials for use in gas turbine engine hot sections due to their high temperature mechanical and physical properties as well as lower density than metals. The advantages of utilizing ceramic hot section components include weight reduction, and improved efficiency as well as enhanced power output and lower emissions as a result of reducing or eliminating cooling. Potential gas turbine ceramic components for industrial, commercial and/or military high temperature turbine applications include combustor liners, vanes, rotors, and shrouds. These components require materials that can withstand high temperatures and pressures for long duration under steam-rich environments. For Navy applications, ceramic hot section components have the potential to increase the operation range. The amount of weight reduced by utilizing a lighter gas turbine can be used to increase fuel storage capacity while a more efficient gas turbine consumes less fuel. Both improvements enable a longer operation range for Navy ships and aircraft. Ceramic hot section components will also be beneficial to the Navy's Growth Joint Strike Fighter (JSF) and VAATE (Versatile Affordable Advanced Turbine Engines) initiatives in terms of reduced weight, cooling air savings, and capability/cost index (CCI). For DOE applications, ceramic hot section components provide an avenue to …
Date:
April 30, 2009
Creator:
Vedula, Venkat & Bhatia, Tania
Object Type:
Report
System:
The UNT Digital Library
Environmental Biosciences Program Quarterly Report
None
Date:
April 30, 2009
Creator:
Mohr, Lawrence C.
Object Type:
Report
System:
The UNT Digital Library
Experimental Mathematics and Computational Statistics
The field of statistics has long been noted for techniques to detect patterns and regularities in numerical data. In this article we explore connections between statistics and the emerging field of 'experimental mathematics'. These includes both applications of experimental mathematics in statistics, as well as statistical methods applied to computational mathematics.
Date:
April 30, 2009
Creator:
Bailey, David H. & Borwein, Jonathan M.
Object Type:
Book
System:
The UNT Digital Library
Fast Correction Optics to Reduce Chromatic Aberrations in Longitudinally Compressed Ion Beams
Longitudinally compressed ion beam pulses are currently employed in ion-beam based warm dense matter studies [1]. Compression arises from an imposed time-dependent longitudinal velocity ramp followed by drift in a neutralized channel. Chromatic aberrations in the final focusing system arising from this chirp increase the attainable beam spot and reduce the effective fluence on target. We report recent work on fast correction optics that remove the time-dependent beam envelope divergence and minimizes the beam spot on target. We present models of the optical element design and predicted ion beam fluence.
Date:
April 30, 2009
Creator:
Lidia, S.M.; Lee, E.P.; Ogata, D.; Seidl, P.A.; Waldron, W.L. & Lund, S.M.
Object Type:
Article
System:
The UNT Digital Library
Federal Employees Health Benefits Program: Enrollee Cost Sharing for Selected Specialty Prescription Drugs
Correspondence issued by the Government Accountability Office with an abstract that begins "Recent increases in prescription drug costs have been fueled in part by the high and rising cost of specialty prescription drugs. Specialty prescription drugs are typically used to treat chronic or life-threatening conditions, such as multiple sclerosis and cancer, for which few other treatment options exist. The drugs typically have few competitors or generic alternatives and may require frequent dosage adjustment, special storage, patient education, or special methods of administration, such as by injection. Costs for specialty prescription drugs are usually high, typically ranging from $1,200 to $40,000 for a 30-day supply. Health plans--including those participating in the Federal Employees Health Benefits Program (FEHBP), which covers nearly 8 million federal employees, dependents, and retirees-- provide coverage for many specialty drugs. Enrollees may be required to pay a portion of specialty drug costs through a copayment--a flat dollar amount--or coinsurance--a percentage share of the drug's actual costs. To manage the high and rising costs of these drugs, some health plans have begun to require enrollees to contribute a greater share of their costs, such as by increasing the use of coinsurance. Congress asked us to examine the costs that …
Date:
April 30, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Federal Register, Volume 74, Number 82, April 30, 2009, Pages 19873-20200
Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.
Date:
April 30, 2009
Creator:
United States. Office of the Federal Register.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Fibrous Fillers to Manufacture Ultra High Ash/Performance Paper
The paper industry is one of the largest users of energy and emitters of CO2 in the US manufacturing industry. In addition to that, it is facing tremendous financial pressure due to lower cost imports. The fine paper industry has shrunk from 15 million tons per year production to 10 million tons per year in the last 5 years. This has resulted in mill closures and job loses. The AF&PA and the DOE formed a program called Agenda 2020 to help in funding to develop breakthrough technologies to provide help in meeting these challenges. The objectives of this project were to optimize and scale-up Fibrous Fillers technology, ready for commercial deployment and to develop ultra high ash/high performance paper using Fibrous Fillers. The goal was to reduce energy consumption, carbon footprint, and cost of manufacturing paper and related industries. GRI International (GRI) has been able to demonstrate the techno - economic feasibility and economic advantages of using its various products in both handsheets as well as in commercial paper mills. GRI has also been able to develop sophisticated models that demonstrate the effect of combinations of GRI's fillers at multiple filler levels. GRI has also been able to develop, optimize, …
Date:
April 30, 2009
Creator:
Mathur, Dr. Vijay K.
Object Type:
Report
System:
The UNT Digital Library
FLUOR'S USE OF LEADING INDICATORS - LESSONS, THEORY & PRACTICE
None
Date:
April 30, 2009
Creator:
SS, PREVETTE
Object Type:
Article
System:
The UNT Digital Library
Force Modulator System
Many metal parts manufacturers use large metal presses to shape sheet metal into finished products like car body parts, jet wing and fuselage surfaces, etc. These metal presses take sheet metal and - with enormous force - reshape the metal into a fully formed part in a manner of seconds. Although highly efficient, the forces involved in forming metal parts also damage the press itself, limit the metals used in part production, slow press operations and, when not properly controlled, cause the manufacture of large volumes of defective metal parts. To date, the metal-forming industry has not been able to develop a metal-holding technology that allows full control of press forces during the part forming process. This is of particular importance in the automotive lightweighting efforts under way in the US automotive manufacturing marketplace. Metalforming Controls Technology Inc. (MC2) has developed a patented press control system called the Force Modulator that has the ability to control these press forces, allowing a breakthrough in stamping process control. The technology includes a series of hydraulic cylinders that provide controlled tonnage at all points in the forming process. At the same time, the unique cylinder design allows for the generation of very high …
Date:
April 30, 2009
Creator:
Clark, Redmond
Object Type:
Report
System:
The UNT Digital Library