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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.
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.
System:
The UNT Digital Library
Albeni Falls Bull Trout Passage 2008 Cumulative Status Report History.
None
Date:
April 30, 2009
Creator:
McLellan, Holly
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
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.
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
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
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
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
System:
The UNT Digital Library
Deposit Summary
Deposit summary of $275.00 made on April 30, 2009.
Date:
April 30, 2009
Creator:
unknown
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.
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
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
System:
The UNT Digital Library
Environmental Biosciences Program Quarterly Report
None
Date:
April 30, 2009
Creator:
Mohr, Lawrence C.
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.
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
System:
The UNT Digital Library
Global Positioning System: Significant Challenges in Sustaining and Upgrading Widely Used Capabilities
A letter report issued by the Government Accountability Office with an abstract that begins "The Global Positioning System (GPS), which provides positioning, navigation, and timing data to users worldwide, has become essential to U.S. national security and a key tool in an expanding array of public service and commercial applications at home and abroad. The United States provides GPS data free of charge. The Air Force, which is responsible for GPS acquisition, is in the process of modernizing GPS. In light of the importance of GPS, the modernization effort, and international efforts to develop new systems, GAO was asked to undertake a broad review of GPS. Specifically, GAO assessed progress in (1) acquiring GPS satellites, (2) acquiring the ground control and user equipment necessary to leverage GPS satellite capabilities, and evaluated (3) coordination among federal agencies and other organizations to ensure GPS missions can be accomplished. To carry out this assessment, GAO's efforts included reviewing and analyzing program documentation, conducting its own analysis of Air Force satellite data, and interviewing key military and civilian officials."
Date:
April 30, 2009
Creator:
United States. Government Accountability Office.
System:
The UNT Digital Library
Higher Education: Approaches to Attract and Fund International Students in the United States and Abroad
A letter report issued by the Government Accountability Office with an abstract that begins "Following September 11, 2001, the number of international students coming to the United States dropped for the first time in over 30 years. While enrollments have rebounded, the U.S. image has declined in the Muslim world and elsewhere. To improve global attitudes toward America, the U.S. government funds higher education for international students to facilitate exchanges, promote understanding among peoples in different countries, and build capacity in developing nations. To provide insight on how higher education is used to advance public diplomacy and development assistance goals, we examined (1) the objectives the United States and selected peer governments seek to advance through higher education for international students and the approaches they employ to attract international students, and (2) the characteristics of major U.S. and peer government programs that fund higher education for international students to support public diplomacy and development goals. GAO collected information from the United States, Australia, China, the European Commission, Germany, and the United Kingdom."
Date:
April 30, 2009
Creator:
United States. Government Accountability Office.
System:
The UNT Digital Library
Hospital Emergency Departments: Crowding Continues to Occur, and Some Patients Wait Longer than Recommended Time Frames
A letter report issued by the Government Accountability Office with an abstract that begins "Hospital emergency departments are a major part of the nation's health care safety net. Of the estimated 119 million visits to U.S. emergency departments in 2006, over 40 percent were paid for by federally-supported programs. These programs--Medicare, Medicaid, and the State Children's Health Insurance Program--are administered by the Department of Health and Human Services (HHS). There have been reports of crowded conditions in emergency departments, often associated with adverse effects on patient quality of care. In 2003, GAO reported that most emergency departments in metropolitan areas experienced some degree of crowding (Hospital Emergency Departments: Crowded Conditions Vary among Hospitals and Communities, GAO-03-460). For example, two out of every three metropolitan hospitals reported going on ambulance diversion--asking ambulances to bypass their emergency departments and instead transport patients to other facilities. GAO was asked to examine information made available since 2003 on emergency department crowding. GAO examined three indicators of emergency department crowding--ambulance diversion, wait times, and patient boarding--and factors that contribute to crowding. To conduct this work, GAO reviewed national data; conducted a literature review of 197 articles; and interviewed officials from HHS and professional and research …
Date:
April 30, 2009
Creator:
United States. Government Accountability Office.
System:
The UNT Digital Library
Long-Term Carbon Injection Field Test for 90% Mercury Removal for a PRB Unit a Spray Dryer and Fabric Filter: Final Scientific/Technical Report
The power industry in the U.S. is faced with meeting regulations to reduce the emissions of mercury compounds from coal-fired plants. Injecting a sorbent such as powdered activated carbon (PAC) into the flue gas represents one of the simplest and most mature approaches to controlling mercury emissions from coal-fired boilers. The purpose of this test program was to evaluate the long-term mercury removal capability, long-term mercury emissions variability, and operating and maintenance (O&M) costs associated with sorbent injection on a configuration being considered for many new plants. Testing was conducted by ADA Environmental Solutions (ADA) at Rocky Mountain Power’s (RMP) Hardin Station through funding provided by DOE/NETL, RMP, and other industry partners. The Hardin Station is a new plant rated at 121 MW gross that was first brought online in April of 2006. Hardin fires a Powder River Basin (PRB) coal and is configured with selective catalytic reduction (SCR) for NOx control, a spray dryer absorber (SDA) for SO2 control, and a fabric filter (FF) for particulate control. Based upon previous testing at PRB sites with SCRs, very little additional mercury oxidation from the SCR was expected at Hardin. In addition, based upon results from DOE/NETL Phase II Round I …
Date:
April 30, 2009
Creator:
Sjostrom, Sharon & Amrhein, Jerry
System:
The UNT Digital Library
Long-Term Carbon Injection Field Test for 90% Mercury Removal for a PRB Unit and and Spray Dryer Fabric Filter
The digital full text of this document is divided into parts. This part contains part of one of the document's six appendices.
Date:
April 30, 2009
Creator:
Sjostrom, Sharon & Amrhein, Jerry
System:
The UNT Digital Library
Long-Term Carbon Injection Field Test for 90% Mercury Removal for a PRB Unit with a Spray Dryer and Fabric Filter
None
Date:
April 30, 2009
Creator:
Sjostrom, Sharon & Amrhein, Jerry
System:
The UNT Digital Library
Low-Cost Substrates for High-Performance Nanorod Array LEDs
The completed project, entitled âLow-Cost Substrates for High-Performance Nanorod LEDs,â targeted the goal of a phosphor-free nanorod-based white LED with IQE > 50% across the spectrum from 450 nm to 600 nm on metallized silicon substrates. The principal achievements of this project included: ⢠Demonstration of (In,Ga)N nanopyramid heterostructures by a conventional OMVPE process. ⢠Verification of complete filtering of threading dislocations to yield dislocation-free pyramidal heterostructures. ⢠Demonstration of electroluminescence with a peak wavelength of ~600 nm from an (In,Ga)N nanopyramid array LED. ⢠Development of a reflective ZrN/AlN buffer layer for epitaxial growth of GaN films and GaN nanopyramid arrays on (111)Si.
Date:
April 30, 2009
Creator:
Sands, Timothy; Stach, Eric & Garcia, Edwin
System:
The UNT Digital Library
National Preparedness: FEMA Has Made Progress, but Needs to Complete and Integrate Planning, Exercise, and Assessment Efforts
A letter report issued by the Government Accountability Office with an abstract that begins "Hurricane Katrina was the most destructive disaster in our nation's history and it highlighted gaps in preparedness for a catastrophic disaster. The Federal Emergency Management Agency (FEMA), a component within the Department of Homeland Security (DHS), is the lead federal agency responsible for developing a national preparedness system. The system includes policies and plans as well as exercises and assessments of capabilities across many public and private entities. GAO was asked to assess the extent to which FEMA has (1) developed policies and plans that define roles and responsibilities; (2) implemented the National Exercise Program, a key tool for examining preparedness; (3) developed a national capabilities assessment; and (4) developed a strategic plan that integrates these elements of the preparedness system. GAO analyzed program documents, such as after-action reports, and visited six states located in disaster regions. While the results of these visits are not generalizable, they show how select states carry out their efforts."
Date:
April 30, 2009
Creator:
United States. Government Accountability Office.
System:
The UNT Digital Library