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Significance of Isotopically Labile Organic Hydrogen in Thermal Maturation of Organic Matter
Isotopically labile organic hydrogen in fossil fuels occupies chemical positions that participate in isotopic exchange and in chemical reactions during thermal maturation from kerogen to bitumen, oil and gas. Carbon-bound organic hydrogen is isotopically far less exchangeable than hydrogen bound to nitrogen, oxygen, or sulfur. We explore why organic hydrogen isotope ratios express a relationship with organic nitrogen isotope ratios in kerogen at low to moderate maturity. We develop and apply new techniques to utilize organic D/H ratios in organic matter fractions and on a molecular level as tools for exploration for fossil fuels and for paleoenvironmental research. The scope of our samples includes naturally and artificially matured substrates, such as coal, shale, oil and gas.
Date:
March 30, 2010
Creator:
Schimmelmann, Arndt & Mastalerz, Maria
Object Type:
Report
System:
The UNT Digital Library
Small Business Administration: Steps Have Been Taken to Improve Administration of the 8(a) Program, but Key Controls for Continued Eligibility Need Strengthening
A letter report issued by the Government Accountability Office with an abstract that begins "The Small Business Administration's (SBA) 8(a) program helps eligible socially and economically disadvantaged small businesses compete in the economy by providing business development activities, such as counseling and technical assistance, and providing opportunities to obtain federal contracts on a set-aside basis. GAO was asked to review SBA's internal control procedures for determining 8(a) eligibility. Specifically, we (1) evaluated the procedures and processes that SBA has implemented to ensure that only eligible firms participate in the 8(a) program, and (2) assessed the extent to which SBA uses external mechanisms such as complaint information in helping to ensure that only eligible firms participate. To address these objectives, GAO reviewed SBA guidance and prior reports, interviewed SBA officials, and conducted site visits and file reviews of 123 randomly sampled 8(a) firms covering the most recent 2 years of annual reviews at five SBA locations."
Date:
March 30, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Sweetwater Reporter (Sweetwater, Tex.), Vol. 112, No. 115, Ed. 1 Tuesday, March 30, 2010
Daily newspaper from Sweetwater, Texas that includes local, state, and national news along with advertising.
Date:
March 30, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Swisher County News (Tulia, Tex.), Vol. 2, No. 11, Ed. 1 Tuesday, March 30, 2010
Weekly newspaper from Tulia, Texas that includes local, state, and national news along with extensive advertising.
Date:
March 30, 2010
Creator:
Hooten, Patsy
Object Type:
Newspaper
System:
The Portal to Texas History
Telework for Executive Agency Employees: A Side-by-Side Comparison of Legislation Pending in the 111th Congress
The 111th Congress is considering legislation (S. 707 and H.R. 1722) to foster the development of telework in executive agencies of the federal government. Legislation to augment telework in executive agencies of the federal government is currently pending in the 111th Congress. S. 707, the Telework Enhancement Act of 2009, and H.R. 1722, the Telework Improvements Act of 2010, were introduced on March 25, 2009, by Senator Daniel Akaka and Representative John Sarbanes, respectively. This report presents a side-by-side comparison of the provisions of S. 707, as reported, and H.R. 1722, as ordered to be reported.
Date:
March 30, 2010
Creator:
Schwemle, Barbara L.
Object Type:
Report
System:
The UNT Digital Library
A U.S.-centric Chronology of the International Climate Change Negotiations
This document provides a U.S.-centric chronology of the international policy deliberations to address climate change from 1979-2009. It begins before agreement on the United Nations Framework Convention on Climate Change (UNFCCC) in 1992, and proceeds through the Kyoto Protocol in 1997, the Marrakesh Accords of 2001, the Bali Action Plan of 2007, and the Copenhagen conference in 2009.
Date:
March 30, 2010
Creator:
Leggett, Jane A.
Object Type:
Report
System:
The UNT Digital Library
Valence-state Model of Strain-dependent Mn L2,3 X-ray Magnetic Circular Dichroism from Ferromagnetic Semiconductors
We present a valence-state model to explain the characteristics of a recently observed pre-edge feature in Mn L{sub 3} x-ray magnetic circular dichroism (XMCD) of ferromagnetic (Ga,Mn)As and (Al,Ga,Mn)As thin films. The prepeak XMCD shows a uniaxial anisotropy, contrary to the cubic symmetry of the main structures induced by the crystalline electric field. Reversing the strain in the host lattice reverses the sign of the uniaxial anisotropy. With increasing carrier localization, the prepeak height increases, indicating an increasing 3d character of the hybridized holes. Hence, the feature is ascribed to transitions from the Mn 2p core level to unoccupied p-d hybridized valence states. The characteristics of the prepeak are readily reproduced by the model calculation taking into account the symmetry of the strain-, spin-orbit-, and exchange-split valence states around the zone center.
Date:
March 30, 2010
Creator:
van der Laan, G.; Edmonds, K. W.; Arenholz, E.; Farley, N. R. S. & Gallagher, B. L.
Object Type:
Article
System:
The UNT Digital Library
Warfighter Support: DOD Needs to Improve Its Planning for Using Contractors to Support Future Military Operations
A letter report issued by the Government Accountability Office with an abstract that begins "Contractors provide a broad range of support to U.S. forces deployed to Afghanistan and Iraq, with the number of contractors at times exceeding the number of military personnel in each country. The Department of Defense (DOD) has acknowledged shortcomings in how the role of contractors was addressed in its planning for Iraq and Afghanistan. In its report accompanying the National Defense Authorization Act for Fiscal Year 2009, the Senate Armed Services Committee directed GAO to assess DOD's development of contract support plans. This report examines (1) what progress DOD has made in developing operational contract support annexes for its operation plans, (2) the extent to which contract requirements are included in other sections of operation plans, and (3) DOD's progress in establishing a long-term capability to include operational contract support requirements in operation plans. GAO reviewed DOD policies, selected operation plans and annexes, and interviewed officials at the combatant commands, the Joint Staff, and Office of the Secretary of Defense."
Date:
March 30, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 112, No. 82, Ed. 1 Wednesday, March 31, 2010
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 31, 2010
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
American Recovery and Reinvestment Act (ARRA) FEMP Technical Assistance Federal Aviation Administration Project 209 - Control Tower and Support Building, Las Vegas, NV
This report represents findings of a design review team that evaluated construction documents (at the 70% level) and operating specifications for a new control tower and support building that will be built in Las Vegas, Nevada by the Federal Aviation Administration (FAA). The focus of the review was to identify measures that could be incorporated into the final design and operating specification that would result in additional energy savings for the FAA that would not have otherwise occurred.
Date:
March 31, 2010
Creator:
Arends, J. & Sandusky, William F.
Object Type:
Report
System:
The UNT Digital Library
Application for Permit to Operate a Class II Solid Waste Disposal Site at the Nevada Test Site - U10c Disposal Site
The Nevada Test Site (NTS) is located approximately 105 km (65 mi) northwest of Las Vegas, Nevada. National Nuclear Security Administration Nevada Site Office (NNSA/NSO) is the federal lands management authority for the NTS and National Security Technologies LLC (NSTec) is the Management and Operations contractor. Access on and off the NTS is tightly controlled, restricted, and guarded on a 24-hour basis. The NTS is posted with signs along its entire perimeter. NSTec is the operator of all solid waste disposal sites on the NTS. The site will be used for the disposal of refuse, rubbish, garbage, sewage sludge, pathological waste, Asbestos-Containing Material (ACM), industrial solid waste, hydrocarbon-burdened soil, hydrocarbon-burdened demolition and construction waste, and other inert waste (hereafter called permissible waste). Waste containing free liquids or regulated under Subtitle C of the Resource Conservation and Recovery Act (RCRA) will not be accepted for disposal at the site. Waste regulated under the Toxic Substance Control Act (TSCA), excluding Polychlorinated Biphenyl [PCB], Bulk Product Waste (see Section 6.2.5) and ACM (see Section 6.2.2.2) will not be accepted for disposal at the site. The disposal site will be used as the sole depository of permissible waste which is: (1) Generated by entities …
Date:
March 31, 2010
Creator:
Programs, NSTec Environmental
Object Type:
Report
System:
The UNT Digital Library
Application of Cutting-Edge 3D Seismic Attribute Technology to the Assessment of Geological Reservoirs for CO2 Sequestration
The goals of this project were to develop innovative 3D seismic attribute technologies and workflows to assess the structural integrity and heterogeneity of subsurface reservoirs with potential for CO{sub 2} sequestration. Our specific objectives were to apply advanced seismic attributes to aide in quantifying reservoir properies and lateral continuity of CO{sub 2} sequestration targets. Our study area is the Dickman field in Ness County, Kansas, a type locality for the geology that will be encountered for CO{sub 2} sequestration projects from northern Oklahoma across the U.S. midcontent to Indiana and beyond. Since its discovery in 1962, the Dickman Field has produced about 1.7 million barrels of oil from porous Mississippian carbonates with a small structural closure at about 4400 ft drilling depth. Project data includes 3.3 square miles of 3D seismic data, 142 wells, with log, some core, and oil/water production data available. Only two wells penetrate the deep saline aquifer. Geological and seismic data were integrated to create a geological property model and a flow simulation grid. We systematically tested over a dozen seismic attributes, finding that curvature, SPICE, and ANT were particularly useful for mapping discontinuities in the data that likely indicated fracture trends. Our simulation results in …
Date:
March 31, 2010
Creator:
Liner, Christopher; Zeng, Jianjun; Li, Po Geng Heather King Jintan; Califf, Jennifer & Seales, John
Object Type:
Report
System:
The UNT Digital Library
ARRA FEMP Technical Assistance -- Federal Aviation Administration Project 209 -- Control Tower and Support Building, Palm Springs, CA
This report represents findings of a design review team that evaluated construction documents (at the 100% level) and operating specifications for a new control tower and support building that will be built in Palm Springs, California by the Federal Aviation Administration (FAA). The focus of the review was to identify measures that could be incorporated into the final design and operating specifications that would result in additional energy savings for the FAA that would not have otherwise occurred.
Date:
March 31, 2010
Creator:
Arends, J. & Sandusky, William F.
Object Type:
Report
System:
The UNT Digital Library
Asian Carp and the Great Lakes Region
This report describes non-indigenous Asian carp species migrating to the United States, the economy at risk, federal response, and litigation.
Date:
March 31, 2010
Creator:
Buck, Eugene H.; Upton, Harold F.; Stern, Charles V. & Nicholas, James E.
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 90, No. 64, Ed. 1 Wednesday, March 31, 2010
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
March 31, 2010
Creator:
Halter, Janie
Object Type:
Newspaper
System:
The Portal to Texas History
Brady Standard-Herald and Heart of Texas News (Brady, Tex.), Ed. 1 Wednesday, March 31, 2010
Weekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date:
March 31, 2010
Creator:
Stewart, James E.
Object Type:
Newspaper
System:
The Portal to Texas History
Calculation of 239Pu fission observables in an event-by-event simulation
The increased interest in more exclusive fission observables has demanded more detailed models. We describe a new computational model, FREYA, that aims to meet this need by producing large samples of complete fission events from which any observable of interest can then be extracted consistently, including any interesting correlations. The various model assumptions are described and the potential utility of the model is illustrated. As a concrete example, we use formal statistical methods, experimental data on neutron production in neutron-induced fission of {sup 239}Pu, along with FREYA, to develop quantitative insights into the relation between reaction observables and detailed microscopic aspects of fission. Current measurements of the mean number of prompt neutrons emitted in fission taken together with less accurate current measurements for the prompt post-fission neutron energy spectrum, up to the threshold for multi-chance fission, place remarkably fine constraints on microscopic theories.
Date:
March 31, 2010
Creator:
Vogt, R; Randrup, J; Pruet, J & Younes, W
Object Type:
Article
System:
The UNT Digital Library
Cherokeean Herald (Rusk, Tex.), Vol. 161, No. 6, Ed. 1 Wednesday, March 31, 2010
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
March 31, 2010
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 116, No. 12, Ed. 1 Wednesday, March 31, 2010
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
March 31, 2010
Creator:
Henry, Mark
Object Type:
Newspaper
System:
The Portal to Texas History
Combinatorial Development of Water Splitting Catalysts Based on the Oxygen Evolving Complex of Photosystem II
The use of methods to create large arrays of potential catalysts for the reaction H2O ÃÂÃÂÃÂÃÂÃÂÃÂÃÂïÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂàÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂý O2 + 2H+ on the anode of an electrolysis system were investigated. This reaction is half of the overall reaction involved in the splitting of water into hydrogen and oxygen gas. This method consisted of starting with an array of electrodes and developing patterned electrochemical approaches for creating a different, defined peptide at each position in the array. Methods were also developed for measuring the rate of reaction at each point in the array. In this way, the goal was to create and then tests many thousands of possible catalysts simultaneously. This type of approach should lead to an ability to optimize catalytic activity systematically, by iteratively designing and testing new libraries of catalysts. Optimization is important to decrease energy losses (over-potentials) associated with the water splitting reaction and thus for the generation of hydrogen. Most of the efforts in this grant period were focused on developing the chemistry and analytical methods required to create pattern peptide formation either using a photolithography approach or an electrochemical approach for dictating the positions of peptide bond formation. This involved testing a large number of different …
Date:
March 31, 2010
Creator:
Woodbury, Neal
Object Type:
Report
System:
The UNT Digital Library
Concentrating Solar Power - Molten Salt Pump Development, Final Technical Report (Phase 1)
The purpose of this project is to develop a long shafted pump to operate at high temperatures for the purpose of producing energy with renewable resources. In Phase I of this three phase project we developed molten salt pump requirements, evaluated existing hardware designs for necessary modifications, developed a preliminary design of the pump concept, and developed refined cost estimates for Phase II and Phase III of the project. The decision has been made not to continue the project into Phases II and III. There is an ever increasing world-wide demand for sources of energy. With only a limited supply of fossil fuels, and with the costs to obtain and produce those fuels increasing, sources of renewable energy must be found. Currently, capturing the sun's energy is expensive compared to heritage fossil fuel energy production. However, there are government requirements on Industry to increase the amount of energy generated from renewable resources. The objective of this project is to design, build and test a long-shafted, molten salt pump. This is the type of pump necessary for a molten salt thermal storage system in a commercial-scale solar trough plant. This project is under the Department of Energy (DOE) Solar Energy Technologies …
Date:
March 31, 2010
Creator:
McDowell, Michael & Schwartz, Alan
Object Type:
Report
System:
The UNT Digital Library
Controlled Hydrogen Fleet and Infrastructure Demonstration Project
This program was undertaken in response to the US Department of Energy Solicitation DE-PS30-03GO93010, resulting in this Cooperative Agreement with the Ford Motor Company and BP to demonstrate and evaluate hydrogen fuel cell vehicles and required fueling infrastructure. Ford initially placed 18 hydrogen fuel cell vehicles (FCV) in three geographic regions of the US (Sacramento, CA; Orlando, FL; and southeast Michigan). Subsequently, 8 advanced technology vehicles were developed and evaluated by the Ford engineering team in Michigan. BP is Ford's principal partner and co-applicant on this project and provided the hydrogen infrastructure to support the fuel cell vehicles. BP ultimately provided three new fueling stations. The Ford-BP program consists of two overlapping phases. The deliverables of this project, combined with those of other industry consortia, are to be used to provide critical input to hydrogen economy commercialization decisions by 2015. The program's goal is to support industry efforts of the US President's Hydrogen Fuel Initiative in developing a path to a hydrogen economy. This program was designed to seek complete systems solutions to address hydrogen infrastructure and vehicle development, and possible synergies between hydrogen fuel electricity generation and transportation applications. This project, in support of that national goal, was designed …
Date:
March 31, 2010
Creator:
Staley, Dr. Scott
Object Type:
Report
System:
The UNT Digital Library
Defense Budget: Fourth Quarter Obligation Rates and Contract Obligations for Fiscal Years 2006-09
Correspondence issued by the Government Accountability Office with an abstract that begins "This letter formally transmits the briefing in response to the National Defense Authorization Act for Fiscal Year 2010 (Pub. L. No. 111-84), which requires GAO to review Department of Defense (DOD) policies related to year-end spending and the rate of obligations incurred by DOD in the fourth quarter of fiscal years 2006 through 2009, as compared with the obligations incurred in the first three quarters of those fiscal years for both 1-year and multi-year appropriations. GAO is required to report to the Committees on Armed Services of the Senate and House of Representatives by March 31, 2010."
Date:
March 31, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Defense Health Care: 2008 Access to Care Surveys Indicate Some Problems, but Beneficiary Satisfaction Is Similar to Other Health Plans
A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) provides health care and mental health care through its TRICARE program. Under TRICARE, beneficiaries may obtain care through TRICARE Prime, an option that includes the use of civilian provider networks and requires enrollment. TRICARE beneficiaries who do not enroll in this option may obtain care from nonnetwork providers through TRICARE Standard, or from network providers through TRICARE Extra. In addition, qualified National Guard and Reserve servicemembers may purchase TRICARE Reserve Select, a plan whose care options are similar to those of TRICARE Standard and TRICARE Extra. We refer to servicemembers who use TRICARE Standard, TRICARE Extra, or TRICARE Reserve Select as nonenrolled beneficiaries. The National Defense Authorization Act for Fiscal Year 2008 directed GAO to analyze the adequacy of DOD's surveys of TRICARE beneficiaries and providers and report what the surveys' results indicate about access to care for nonenrolled beneficiaries. To do so, GAO evaluated the surveys' methodology by interviewing DOD officials and reviewing relevant documentation, including the Office of Management and Budget's (OMB) survey standards. GAO also assessed the surveys' results by interviewing DOD officials, obtaining relevant documentation, and analyzing …
Date:
March 31, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library