US Department of Energy - Office of FreedomCar and Vehicle Technologies and US Centers for Disease Control and Prevention - National Institute for Occupational Safety and Health Inter-Agency Agreement Research on "The Analysis of Genotoxic Activities of Exhaust Emissions from Mobile Natural Gas, Diesel, and Spark-Ignition Engines" (open access)

US Department of Energy - Office of FreedomCar and Vehicle Technologies and US Centers for Disease Control and Prevention - National Institute for Occupational Safety and Health Inter-Agency Agreement Research on "The Analysis of Genotoxic Activities of Exhaust Emissions from Mobile Natural Gas, Diesel, and Spark-Ignition Engines"

The US Department of Energy-Office of Heavy Vehicle Technologies (now the DOE-Office of FreedomCar and Vehicle Technologies) signed an Interagency Agreement (IAA) with National Institute for Occupational Safety and Health (NIOSH), No.01-15 DOE, 9/4/01, for 'The analysis of genotoxic activities of exhaust emissions from mobile natural gas, diesel, and spark-ignition engines'; subsequently modified on 3/27/02 (DOE IAG No.01-15-02M1); subsequently modified 9/02/03 (IAA Mod No. 01-15-03M1), as 'The analysis of genotoxic activities of exhaust emissions from mobile internal combustion engines: identification of engine design and operational parameters controlling exhaust genotoxicity'. The DOE Award/Contract number was DE-AI26-01CH11089. The IAA ended 9/30/06. This is the final summary technical report of National Institute for Occupational Safety and Health research performed with the US Department of Energy-Office of FreedomCar and Vehicle Technologies under that IAA: (A) NIOSH participation was requested by the DOE to provide in vitro genotoxicity assays of the organic solvent extracts of exhaust emissions from a suite of in-use diesel or spark-ignition vehicles; (B) research also was directed to develop and apply genotoxicity assays to the particulate phase of diesel exhaust, exploiting the NIOSH finding of genotoxicity expression by diesel exhaust particulate matter dispersed into the primary components of the surfactant coating …
Date: September 30, 2006
Creator: Wallace, William E.
Object Type: Report
System: The UNT Digital Library
The Rosetta Resources CO2 Storage Project - A WESTCARB Geologic Pilot Test (open access)

The Rosetta Resources CO2 Storage Project - A WESTCARB Geologic Pilot Test

WESTCARB, one of seven U.S. Department of Energypartnerships, identified (during its Phase I study) over 600 gigatonnesof CO2 storage capacity in geologic formations located in the Westernregion. The Western region includes the WESTCARB partnership states ofAlaska, Arizona, California, Nevada, Oregon and Washington and theCanadian province of British Columbia. The WESTCARB Phase II study iscurrently under way, featuring three geologic and two terrestrial CO2pilot projects designed to test promising sequestration technologies atsites broadly representative of the region's largest potential carbonsinks. This paper focuses on two of the geologic pilot studies plannedfor Phase II -referred to-collectively as the Rosetta-Calpine CO2 StorageProject. The first pilot test will demonstrate injection of CO2 into asaline formation beneath a depleted gas reservoir. The second test willgather data for assessing CO2 enhanced gas recovery (EGR) as well asstorage in a depleted gas reservoir. The benefit of enhanced oil recovery(EOR) using injected CO2 to drive or sweep oil from the reservoir towarda production well is well known. EaR involves a similar CO2 injectionprocess, but has received far less attention. Depleted natural gasreservoirs still contain methane; therefore, CO2 injection may enhancemethane production by reservoir repressurization or pressure maintenance.CO2 injection into a saline formation, followed by injection into adepleted natural …
Date: January 30, 2006
Creator: Trautz, Robert; Benson, Sally; Myer, Larry; Oldenburg, Curtis; Seeman, Ed; Hadsell, Eric et al.
Object Type: Article
System: The UNT Digital Library
Design and implementation of an emergency environmental responsesystem to protect migrating salmon in the lower San Joaquin River,California (open access)

Design and implementation of an emergency environmental responsesystem to protect migrating salmon in the lower San Joaquin River,California

In the past decade tens of millions of dollars have beenspent by water resource agencies in California to restore the nativesalmon fishery in the San Joaquin River and its major tributaries. Anexcavated deep water ship channel (DWSC), through which the river runs onits way to the Bay/Delta and Pacific Ocean, experiences episodes of lowdissolved oxygen which acts as a barrier to anadromous fish migration anda threat to the long-term survival of the salmon run. An emergencyresponse management system is under development to forecast theseepisodes of low dissolved oxygen and to deploy measures that will raisedissolved oxygen concentrations to prevent damage to the fisheryresource. The emergency response management system has been designed tointeract with a real-time water quality monitoring network and is servedby a comprehensive data management and forecasting model toolbox. TheBay/Delta and Tributaries (BDAT) Cooperative Data Management System is adistributed, web accessible database that contains terabytes ofinformation on all aspects of the ecology of the Bay/Delta and upperwatersheds. The complexity of the problem dictates data integration froma variety of monitoring programs. A unique data templating system hasbeen constructed to serve the needs of cooperating scientists who wish toshare their data and to simplify and streamline data uploading into themaster database. …
Date: January 30, 2006
Creator: Quinn, Nigel W.T. & Jacobs, Karl C.
Object Type: Article
System: The UNT Digital Library
Tucannon River Temperature Study, Prepared for : Watershed Resource Inventory Area (WRIA) 35. (open access)

Tucannon River Temperature Study, Prepared for : Watershed Resource Inventory Area (WRIA) 35.

This report presents the results of a temperature analysis of the Tucannon River completed for the WRIA 35 Planning Unit. The Tucannon River is located in southeastern Washington and flows approximately 100 kilometers (km) (62 miles) from the Blue Mountains to the Snake River. High water temperature in the Tucannon River has been identified as a limiting factor for salmonid fish habitat (Columbia Conservation District, 2004). Several segments of the Tucannon River are included on Washington State Department of Ecology (Ecology) 303(d) list of impaired waterbodies due to temperature. Ecology is currently conducting scoping for a temperature Total Maximum Daily Load (TMDL) study of the Tucannon River. The WRIA 35 Planning Unit retained HDR Engineering to evaluate water temperature in the Tucannon River. The project objectives are: (1) Review recent and historic data and studies to characterize temperature conditions in the river; (2) Perform field studies and analyses to identify and quantify heating and cooling processes in the river; (3) Develop and calibrate a computer temperature model to determine the sources of heat to the Tucannon River and to predict the temperature of the river that would occur with increased natural riparian shading assuming the current river morphology; (4) Evaluate …
Date: June 30, 2006
Creator: Engineering., HDR
Object Type: Report
System: The UNT Digital Library
Fabrication and Characterization of Suspended Carbon Nanotube Devices in Liquid (open access)

Fabrication and Characterization of Suspended Carbon Nanotube Devices in Liquid

Suspended carbon nanotube devices are a promising platform for future bio-electronic applications. Suspended carbon nanotube transistors have been previously fabricated in air; however all previous attempts to bring them into liquid failed. We analyze forces acting on the suspended nanotube devices during immersion into liquids and during device operation and show that surface tension forces acting on the suspended nanotubes during transfer into the liquid phase are responsible for the nanotube damage. We have developed a new strategy that circumvents these limitations by coating suspended nanotubes with a rigid inorganic shell in the gas phase. The coating reinforces the nanotubes and allows them to survive transfer through the interface. Subsequent removal of the coating in the solution phase restores pristine suspended nanotubes. We demonstrate that devices fabricated using this technique preserve their original electrical characteristics.
Date: October 30, 2006
Creator: Artyukhin, A.; Stadermann, M.; Stroeve, P.; Bakajin, O. & Noy, A.
Object Type: Article
System: The UNT Digital Library
Texas Attorney General Opinion: GA-0474 (open access)

Texas Attorney General Opinion: GA-0474

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification; Appropriate construction of Local Government Code chapter 373A authorizing a city to establish homestead preservation districts and reinvestment zones (RQ-0471-GA)
Date: October 30, 2006
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: GA-0475 (open access)

Texas Attorney General Opinion: GA-0475

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification; Gillespie county attorney's authority to use money in the hot check fund to sponsor a children's book (RQ-0473-GA)
Date: October 30, 2006
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: GA-0476 (open access)

Texas Attorney General Opinion: GA-0476

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification; Whether the Texas Department of Family and Protective Services may contract with a governmental entity to provide substitute care and case management services (RQ-0475-GA)
Date: October 30, 2006
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: GA-0477 (open access)

Texas Attorney General Opinion: GA-0477

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification; Whether the Open Meetings Act requires specific notice of a non-binding vote on a "personal endorsement" motion (RQ-0477-GA)
Date: October 30, 2006
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Health Insurance Coverage: Characteristics of the Insured and Uninsured Populations in 2005. August 2006 (open access)

Health Insurance Coverage: Characteristics of the Insured and Uninsured Populations in 2005. August 2006

This report examines characteristics of both the insured and the uninsured people.
Date: August 30, 2006
Creator: Peterson, Chris L.
Object Type: Report
System: The UNT Digital Library
Navy Littoral Combat Ship (LCS) Program: Oversight Issues and Options for Congress (open access)

Navy Littoral Combat Ship (LCS) Program: Oversight Issues and Options for Congress

None
Date: November 30, 2006
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Taiwan: Recent Developments and U.S. Policy Choices (open access)

Taiwan: Recent Developments and U.S. Policy Choices

None
Date: March 30, 2006
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Navy Littoral Combat Ship (LCS): Background and Issues for Congress (open access)

Navy Littoral Combat Ship (LCS): Background and Issues for Congress

None
Date: January 30, 2006
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Why the Dollar Rose in 2005 and the Prospect for 2006: Insights into the State of International Asset Markets and the Global Economy (open access)

Why the Dollar Rose in 2005 and the Prospect for 2006: Insights into the State of International Asset Markets and the Global Economy

The dollar exchange rate rose substantially in 2005, halting a three-year decline and moving counter to the expectations of many observers. This report discusses potential reasons for the dollar's appreciation.
Date: May 30, 2006
Creator: Elwell, Craig K.
Object Type: Report
System: The UNT Digital Library
Permanent Normal Trade Relations (PNTR) Status for Ukraine and U.S.-Ukrainian Economic Ties (open access)

Permanent Normal Trade Relations (PNTR) Status for Ukraine and U.S.-Ukrainian Economic Ties

None
Date: March 30, 2006
Creator: unknown
Object Type: Report
System: The UNT Digital Library
The European Parliament (open access)

The European Parliament

This report mainly discusses The European Parliament which is a key institution of 25 member European Union. The role of the European Parliament in the legislative has expanded steadily over time as the scope of EU policy has grown.
Date: March 30, 2006
Creator: Archick, Kristin
Object Type: Report
System: The UNT Digital Library
Emergency Management Preparedness Standards: Overview and Options for Congress (open access)

Emergency Management Preparedness Standards: Overview and Options for Congress

This report provides Emergency an Overview and Options for Congress on Emergency Management Preparedness Standards which includes major recommendations like adoption and use of emergency response standards, mutual aid provisions, private sector preparedness.
Date: August 30, 2006
Creator: Bea, Keith
Object Type: Report
System: The UNT Digital Library
Why Has Household Income Fallen in the Current Expansion While GDP Has Risen? (open access)

Why Has Household Income Fallen in the Current Expansion While GDP Has Risen?

None
Date: August 30, 2006
Creator: Labonte, Marc
Object Type: Report
System: The UNT Digital Library
Illinois State Geological Survey Evaluation of CO2 Capture Options from Ethanol Plants (open access)

Illinois State Geological Survey Evaluation of CO2 Capture Options from Ethanol Plants

The Illinois State Geological Survey and the Midwest Geological Sequestration Consortium are conducting CO{sub 2} sequestration and enhanced oil recovery testing at six different sites in the Illinois Basin. The capital and operating costs for equipment to capture and liquefy CO{sub 2} from ethanol plants in the Illinois area were evaluated so that ethanol plants could be considered as an alternate source for CO{sub 2} in the event that successful enhanced oil recovery tests create the need for additional sources of CO{sub 2} in the area. Estimated equipment and operating costs needed to capture and liquefy 68 metric tonnes/day (75 tons/day) and 272 tonnes/day (300 tons/day) of CO{sub 2} for truck delivery from an ethanol plant are provided. Estimated costs are provided for food/beverage grade CO{sub 2} and also for less purified CO{sub 2} suitable for enhanced oil recovery or sequestration. The report includes preliminary plant and equipment designs and estimates major capital and operating costs for each of the recovery options. Availability of used equipment was assessed.
Date: September 30, 2006
Creator: Finley, Robert
Object Type: Text
System: The UNT Digital Library
TOXICITY CHARACTERISTIC LEACHING PROCEDURE APPLIED TO RADIOACTIVE SALTSTONE CONTAINING TETRAPHENYLBORATE: DEVELOPMENT OF A MODIFIED ZERO-HEADSPACE EXTRACTOR (open access)

TOXICITY CHARACTERISTIC LEACHING PROCEDURE APPLIED TO RADIOACTIVE SALTSTONE CONTAINING TETRAPHENYLBORATE: DEVELOPMENT OF A MODIFIED ZERO-HEADSPACE EXTRACTOR

In order to assess the effect of extended curing times at elevated temperatures on saltstone containing Tank 48H waste, saltstone samples prepared as a part of a separate study were analyzed for benzene using a modification of the United States Environmental Protection Agency (USEPA) method 1311 Toxicity Characteristic Leaching Procedure (TCLP). To carry out TCLP for volatile organic analytes (VOA), such as benzene, in the Savannah River National Laboratory (SRNL) shielded cells (SC), a modified TCLP Zero-Headspace Extractor (ZHE) was developed. The modified method was demonstrated to be acceptable in a side by side comparison with an EPA recommended ZHE using nonradioactive saltstone containing tetraphenylborate (TPB). TCLP results for all saltstone samples tested containing TPB (both simulant and actual Tank 48H waste) were below the regulatory limit for benzene (0.5 mg/L). In general, higher curing temperatures corresponded to higher concentrations of benzene in TCLP extract. The TCLP performed on the simulant samples cured under the most extreme conditions (3000 mg/L TPB in salt and cured at 95 C for at least 144 days) resulted in benzene values that were greater than half the regulatory limit. Taking into account that benzene in TCLP extract was measured on the same order of …
Date: September 30, 2006
Creator: Crapse, K.; Cozzi, A.; Crawford, C. & Jurgensen, A.
Object Type: Report
System: The UNT Digital Library
Final report (open access)

Final report

High performance computational science and engineering simulations have become an increasingly important part of the scientist's problem solving toolset. A key reason is the development of widely used codes and libraries that support these applications, for example, Netlib, a collection of numerical libraries [33]. The term community codes refers to those libraries or applications that have achieved some critical level of acceptance by a user community. Many of these applications are on the high-end in terms of required resources: computation, storage, and communication. Recently, there has been considerable interest in putting such applications on-line and packaging them as network services to make them available to a wider user base. Applications such as data mining [22], theorem proving and logic [14], parallel numerical computation [8][32] are example services that are all going on-line. Transforming applications into services has been made possible by advances in packaging and interface technologies including component systems [2][6][13][28][37], proposed communication standards [34], and newer Web technologies such as Web Services [38]. Network services allow the user to focus on their application and obtain remote service when needed by simply invoking the service across the network. The user can be assured that the most recent version of the …
Date: April 30, 2006
Creator: Weissman, Jon B
Object Type: Text
System: The UNT Digital Library
Search for Resonances in the Photoproduction of Proton-Antiproton Pairs (open access)

Search for Resonances in the Photoproduction of Proton-Antiproton Pairs

Results are reported on the reaction {gamma}p {yields} p{bar p}p with beam energy in the range 4.8-5.5 GeV. The data were collected at the Thomas Jefferson National Accelerator Facility in CLAS experiment E01-017(G6C). The focus of this study is an understanding of the mechanisms of photoproduction of proton-antiproton pairs, and to search for intermediate resonances, both narrow and broad, which decay to p{bar p}. The total measured cross section in the photon energy range 4.8-5.5 GeV is {sigma} = 33 {+-} 2 nb. Measurement of the cross section as a function of energy is provided. An upper limit on the production of a narrow resonance state previously observed with a mass of 2.02 GeV/c{sup 2} is placed at 0.35 nb. No intermediate resonance states were observed. Meson exchange production appears to dominate the production of the proton-antiproton pairs.
Date: June 30, 2006
Creator: Stokes, Burnham
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Power Systems Development Facility Gasification Test Campaign TC20 (open access)

Power Systems Development Facility Gasification Test Campaign TC20

In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF), located in Wilsonville, Alabama, routinely demonstrates gasification technologies using various types of coal. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a Transport Gasifier, a hot gas particulate control device (PCD), advanced syngas cleanup systems, and high-pressure solids handling systems. This report summarizes the results of the first demonstration of the Transport Gasifier following significant modifications of the gasifier configuration. This demonstration took place during test campaign TC20, occurring from August 8 to September 23, 2006. The modifications proved successful in increasing gasifier residence time and particulate collection efficiency, two parameters critical in broadening of the fuel operating envelope and advancing gasification technology. The gasification process operated for over 870 hours, providing the opportunity for additional testing of various gasification technologies, such as PCD failsafe evaluation and sensor development.
Date: September 30, 2006
Creator: Southern Company Services
Object Type: Report
System: The UNT Digital Library
Adaptive Full-Spectrum Solar Energy Systems Cross-Cutting R&D on adaptive full-spectrum solar energy systems for more efficient and affordable use of solar energy in buildings and hybrid photobioreactors (open access)

Adaptive Full-Spectrum Solar Energy Systems Cross-Cutting R&D on adaptive full-spectrum solar energy systems for more efficient and affordable use of solar energy in buildings and hybrid photobioreactors

This RD&D project is a multi-institutional effort to develop a hybrid solar lighting (HSL) system that transports daylight from a paraboloidal dish concentrator to a luminaire via a bundle of polymer fiber optics. The luminaire can be a device to distribute sunlight into a space for the production of algae for CO{sub 2} sequestration or it can be a device that is a combination of daylighting and electric lighting for space/task lighting. In this project, the sunlight is collected using a one-meter paraboloidal concentrator dish with two-axis tracking. For the third generation (beta) system, the secondary mirror is an ellipsoidal mirror that directs the visible light into a bundle of 3 mm diameter fibers. The IR spectrum is filtered out to minimize unnecessary heating at the fiber entrance region. This report describes the major achievements from this research that began in August 2001.
Date: March 30, 2006
Creator: Wood, Byard & Kim, Kwang
Object Type: Report
System: The UNT Digital Library