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795 Matching Results
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Altus Times (Altus, Okla.), Vol. 106, No. 248, Ed. 1 Monday, January 24, 2005
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 24, 2005
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Sun (Alvin, Tex.), Vol. 115, No. 8, Ed. 1 Monday, January 24, 2005
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
January 24, 2005
Creator:
Schwind, Jim & Looby, Edward
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 84, No. 51, Ed. 1 Monday, January 24, 2005
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 24, 2005
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
Calcium Carbonate Production by Coccolithophorid Algae in Long Term, Carbon Dioxide Sequestration
Predictions of increasing levels of anthropogenic carbon dioxide (CO{sub 2}) and the specter of global warming have intensified research efforts to identify ways to sequester carbon. A number of novel avenues of research are being considered, including bioprocessing methods to promote and accelerate biosequestration of CO{sub 2} from the environment through the growth of organisms such as coccolithophorids, which are capable of sequestering CO{sub 2} relatively permanently. Calcium and magnesium carbonates are currently the only proven, long-term storage reservoirs for carbon. Whereas organic carbon is readily oxidized and releases CO{sub 2} through microbial decomposition on land and in the sea, carbonates can sequester carbon over geologic time scales. This proposal investigates the use of coccolithophorids ? single-celled, marine algae that are the major global producers of calcium carbonate ? to sequester CO{sub 2} emissions from power plants. Cultivation of coccolithophorids for calcium carbonate (CaCO{sub 3}) precipitation is environmentally benign and results in a stable product with potential commercial value. Because this method of carbon sequestration does not impact natural ecosystem dynamics, it avoids controversial issues of public acceptability and legality associated with other options such as direct injection of CO{sub 2} into the sea and ocean fertilization. Consequently, cultivation of …
Date:
January 24, 2005
Creator:
Fabry, V. J.
Object Type:
Report
System:
The UNT Digital Library
China’s Economic Conditions
This report gives an overview of China's economic development, China's trade patterns, foreign investments in China and implications for the United States
Date:
January 24, 2005
Creator:
Morrison, Wayne M.
Object Type:
Report
System:
The UNT Digital Library
Clean Water Act Issues in the 109th Congress
This report discusses various issues in the 109th Congress pertaining to water infrastructure and water quality standards. Legislative initiatives to comprehensively amend the Clean Water Act (CWA) have stalled for some time as interested parties have debated whether and exactly how to change the law. Congress has recently focused legislative attention on narrow bills to extend or modify selected CWA programs, rather than taking up comprehensive proposals.
Date:
January 24, 2005
Creator:
Copeland, Claudia
Object Type:
Report
System:
The UNT Digital Library
Diffraction Studies of Glasses, Liquids and Nanoclusters
Amorphous SiO{sub 2} is classically understood as a continuous random network forming glass. Typically amorphous materials possess no translational symmetry, which is the signature of a crystal. Our interest in investigating SiO{sub 2}, grown as a thin film (100, 500 {angstrom}) on Si(001), is to observe how this particular amorphous phase is able to couple to the crystalline substrate and reflect a peculiar degree of order.
Date:
January 24, 2005
Creator:
Castro-Colin, Miguel; Donner, Wolfgang & Moss, S. C.
Object Type:
Report
System:
The UNT Digital Library
Early Childhood Education: Preschool Participation, Program Efficacy, and Federal Policy Issues
This report examines what we currently know about preprimary programs, including numbers of children served and their family characteristics; as well as data on the efficacy of preprimary programs in enhancing later learning and other life skills. Current federal programs that serve preschool age children are described, and policy issues which may arise as the federal role in early childhood education is debated are discussed.
Date:
January 24, 2005
Creator:
McCallion, Gail
Object Type:
Report
System:
The UNT Digital Library
Energy-dependent excitation cross section measurements of the diagnostic lines of Fe XVII
By implementing a large-area, gain-stabilized microcalorimeter array on an electron beam ion trap, the electron-impact excitation cross sections for the dominant x-ray lines in the Fe XVII spectrum have been measured as a function of electron energy up to greater than three times the threshold energy, establishing a benchmark for atomic calculations. The results reveal a consistent overestimation by recent calculations of the excitation cross section of the resonance transition, which is shown to be at the root of several long-standing problems associated with modeling solar and astrophysical Fe XVII spectra. The data do not show strong contributions from resonance excitation contrary to recent statements in the literature.
Date:
January 24, 2005
Creator:
Brown, G V; Beiersdorfer, P; Chen, H; Scofield, J H; Boyce, K R; Kelley, R L et al.
Object Type:
Article
System:
The UNT Digital Library
Estimates and Rigorous Bounds on Pore-Fluid Enhanced Shear Modulus in Poroelastic Media with Hard and Soft Anisotropy
A general analysis of poroelasticity for hexagonal, tetragonal, and cubic symmetry shows that four eigenvectors are pure shear modes with no coupling to the pore-fluid mechanics. The remaining two eigenvectors are linear combinations of pure compression and uniaxial shear, both of which are coupled to the fluid mechanics. The analysis proceeds by first reducing the problem to a 2 x 2 system. The poroelastic system including both anisotropy in the solid elastic frame (i.e., with ''hard anisotropy''), and also anisotropy of the poroelastic coefficients (''soft anisotropy'') is then studied in some detail. In the presence of anisotropy and spatial heterogeneity, mechanics of the pore fluid produces shear dependence on fluid bulk modulus in the overall poroelastic system. This effect is always present (though sometimes small in magnitude) in the systems studied, and can be comparatively large (up to a maximum increase of about 20 per cent) in some porous media--including porous glass and Schuler-Cotton Valley sandstone. General conclusions about poroelastic shear behavior are also related to some recently derived product formulas that determine overall shear response of these systems. Another method is also introduced based on rigorous Hashin-Shtrikman-style bounds for nonporous random polycrystals, followed by related self-consistent estimates of mineral …
Date:
January 24, 2005
Creator:
Berger, E. L.
Object Type:
Article
System:
The UNT Digital Library
Evolution of Close Binary Systems
We collected data on the masses, radii, etc. of three classes of close binary stars: low-temperature contact binaries (LTCBs), near-contact binaries (NCBs), and detached close binaries (DCBs). They restrict themselves to systems where (1) both components are, at least arguably, near the Main Sequence, (2) the periods are less than a day, and (3) there is both spectroscopic and photometric analysis leading to reasonably reliable data. They discuss the possible evolutionary connections between these three classes, emphasizing the roles played by mass loss and angular momentum loss in rapidly-rotating cool stars.
Date:
January 24, 2005
Creator:
Yakut, K & Eggleton, P
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, January 24, 2005
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 24, 2005
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Federal Family Education Loan Program: More Oversight Is Needed for Schools That Are Lenders
A letter report issued by the Government Accountability Office with an abstract that begins "In fiscal year 2004, lenders made about $65 billion in loans through the Federal Family Education Loan Program (FFELP) to assist students in paying for postsecondary education. The Higher Education Act (HEA), which authorizes FFELP, broadly defined eligible lenders--including schools. The Department of Education's (Education) Office of Federal Student Aid (FSA) is responsible for ensuring that lenders comply with FFELP laws and regulations. Recently, schools have become increasingly interested in becoming lenders, and this has raised concerns about whether it is appropriate for schools to become lenders given that they both determine students' eligibility for loans and in some cases set the price of attendance. In light of these concerns we determined (1) the extent to which schools have participated as FFELP lenders and their characteristics, (2) how schools have structured lending operations and benefits for borrowers and schools, and (3) statutory and regulatory safeguards designed to protect taxpayers' and borrowers' interests."
Date:
January 24, 2005
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Field Test Program for Long-Term Operation of a COHPAC System for Removing Mercury from Coal-Fired Flue Gas
With the Nation's coal-burning utilities facing the possibility of tighter controls on mercury pollutants, the U.S. Department of Energy is funding projects that could offer power plant operators better ways to reduce these emissions at much lower costs. Sorbent injection technology represents one of the simplest and most mature approaches to controlling mercury emissions from coal-fired boilers. It involves injecting a solid material such as powdered activated carbon into the flue gas. The gas-phase mercury in the flue gas contacts the sorbent and attaches to its surface. The sorbent with the mercury attached is then collected by the existing particle control device along with the other solid material, primarily fly ash. During 2001, ADA Environmental Solutions (ADA-ES) conducted a full-scale demonstration of sorbent-based mercury control technology at the Alabama Power E.C. Gaston Station (Wilsonville, Alabama). This unit burns a low-sulfur bituminous coal and uses a hot-side electrostatic precipitator (ESP) in combination with a Compact Hybrid Particulate Collector (COHPAC{reg_sign}) baghouse to collect fly ash. The majority of the fly ash is collected in the ESP with the residual being collected in the COHPAC{reg_sign} baghouse. Activated carbon was injected between the ESP and COHPAC{reg_sign} units to collect the mercury. Short-term mercury removal …
Date:
January 24, 2005
Creator:
Bustard, Jean; Lindsey, Charles; Brignac, Paul; Starns, Travis; Sjostrom, Sharon; Taylor, Trent et al.
Object Type:
Report
System:
The UNT Digital Library
Growth modes of InN(000-1) on GaN buffer layers on sapphire
In this work, using atomic force microscopy and scanning tunneling microscopy, we study the surface morphologies of epitaxial InN films grown by plasma-assisted molecular beam epitaxy with intervening GaN buffer layers on sapphire substrates. On smooth GaN buffer layers, nucleation and evolution of three-dimensional InN islands at various coverages and growth temperatures are investigated. The shapes of the InN islands are observed to be predominantly mesa-like with large flat (000-1) tops, which suggests a possible role of indium as a surfactant. Rough GaN buffer layers composed of dense small GaN islands are found to significantly improve uniform InN wetting of the substrates, on which atomically smooth InN films are obtained that show the characteristics of step-flow growth. Scanning tunneling microscopy imaging reveals the defect-mediated surface morphology of smooth InN films, including surface terminations of screw dislocations and a high density of shallow surface pits with depths less than 0.3 nm. The mechanisms of the three-dimensional island size and shape evolution and formation of defects on smooth surfaces are considered.
Date:
January 24, 2005
Creator:
Liu, Bing; Kitajima, Takeshi; Chen, Dongxue & Leone, Stephen R.
Object Type:
Article
System:
The UNT Digital Library
The Health Insurance Portability and Accountability Act (HIPAA) of 1996: Overview and Guidance on Frequently Asked Questions
The Health Insurance Portability and Accountability Act of 1996 guarantees the availability and renewability of health insurance coverage for certain individuals. It permits a limited number of small businesses and self-employment individuals to establish tax-favored medical savings accounts, increases the tax deduction for health insurance for the self-employed, and amends the Internal Revenue Code to treat private long-term care policies the way health insurance policies and health care expenses are currently treated.
Date:
January 24, 2005
Creator:
Chaikind, Hinda; Hearne, Jean; Lyke, Bob & Redhead, Stephen
Object Type:
Report
System:
The UNT Digital Library
High-Energy-Density, Laboratory-Astrophysics Studies of Jets and Bow Shocks
Large-scale directional outflows of supersonic plasma, also known as ''jets'', are ubiquitous phenomena in astrophysics [1]. The interaction of such jets with surrounding matter often results in spectacular bow shocks, and intense radiation from radio to gamma-ray wavelengths. The traditional approach to understanding such phenomena is through theoretical analysis and numerical simulations. However, such numerical simulations have limited resolution, often assume axial symmetry, do not include all relevant physical processes, and fail to scale correctly in Reynolds number and perhaps other key dimensionless parameters. Additionally, they are frequently not tested by comparison with laboratory experiments. Recent advances in high-energy-density physics using large inertial-confinement-fusion devices now allow controlled laboratory experiments on macroscopic volumes of plasma of direct relevance relevant to astrophysics [2]. In this Letter we report the first results of experiments designed to study the evolution of supersonic plasma jets and the bow shocks they drive into a surrounding medium. Our experiments reveal both regular and highly complex flow patterns in the bow shock, thus opening a new window--complementary to computer simulations--into understanding the nature of three-dimensional astrophysical jets.
Date:
January 24, 2005
Creator:
Foster, J M; Wilde, B H; Rosen, P A; Perry, T S; Khokhlov, A M; Coker, R F et al.
Object Type:
Article
System:
The UNT Digital Library
High Level Waste Tank Gamma Profiling paper
Cleanup at the Savannah River Site brings with it the need to clean out and close down the radioactive waste tanks constructed in support of the fuel rod dissolution process. An innovative technique for assaying waste tanks has been developed at the Savannah River Site. The technique uses a gamma detector in the annular space between the inner and outer tank walls of double walled tanks. Unique shielding, counting electronics, and deployment techniques were developed. The system provides information to facilitate mapping interstitial liquid levels, sludge layers and other structures in the waste tank located near the tank walls. The techniques used, results, and lessons learned will be discussed.
Date:
January 24, 2005
Creator:
FRANK, MOORE
Object Type:
Article
System:
The UNT Digital Library
High Performance Tools And Technologies
This goal of this project was to evaluate the capability and limits of current scientific simulation development tools and technologies with specific focus on their suitability for use with the next generation of scientific parallel applications and High Performance Computing (HPC) platforms. The opinions expressed in this document are those of the authors, and reflect the authors' current understanding and functionality of the many tools investigated. As a deliverable for this effort, we are presenting this report describing our findings along with an associated spreadsheet outlining current capabilities and characteristics of leading and emerging tools in the high performance computing arena. This first chapter summarizes our findings (which are detailed in the other chapters) and presents our conclusions, remarks, and anticipations for the future. In the second chapter, we detail how various teams in our local high performance community utilize HPC tools and technologies, and mention some common concerns they have about them. In the third chapter, we review the platforms currently or potentially available to utilize these tools and technologies on to help in software development. Subsequent chapters attempt to provide an exhaustive overview of the available parallel software development tools and technologies, including their strong and weak points …
Date:
January 24, 2005
Creator:
Collette, M R; Corey, I R & Johnson, J R
Object Type:
Report
System:
The UNT Digital Library
Highway And Transit Investments: Options for Improving Information on Projects' Benefits and Costs and Increasing Accountability for Results
A letter report issued by the Government Accountability Office with an abstract that begins "Mobility is critical to the nation's economy. Projections of future passenger and freight travel suggest that increased levels of investment may be needed to maintain the current levels of mobility provided by the nation's highway and transit systems. However, calls for greater investment in transportation come amid growing concerns about fiscal imbalances at all levels of the government. As a result, careful decisions will need to be made to ensure that transportation investments maximize the benefits of each federal dollar invested. In this report GAO identifies (1) the categories of benefits and costs that can be attributed to new highway and transit investments and the challenges in measuring them; (2) how state, local, and regional decision makers consider the benefits and costs of new highway and transit investments when comparing alternatives; (3) the extent to which investments meet their projected outcomes; and (4) options to improve the information available to decision makers. To address these objectives, we convened an expert panel, surveyed state departments of transportation and transit agencies, and conducted site visits to five metropolitan areas that had both a capacity-adding highway project and transit …
Date:
January 24, 2005
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Housing Issues in the 108th Congress
This report summarizes current housing issues, cites legislative proposals, and in some cases, presents brief pro/con discussions.
Date:
January 24, 2005
Creator:
Bourdon, E. Richard
Object Type:
Report
System:
The UNT Digital Library
How to Find Information in a Library and on the Internet
This report includes background directories, current information, reference books, and websites for government, politics, legislation, and other sources. It lists a number of Internet search engines, which can be used at many public libraries and also suggests guides on how to search, including one for kids.
Date:
January 24, 2005
Creator:
Platt, Suzy
Object Type:
Report
System:
The UNT Digital Library
IFE Thick Liquid Wall Chamber Dynamics: Governing Mechanisms and Modeling and Experimental Capabilities
For thick liquid wall concepts, it is important to understand the different mechanisms affecting the chamber dynamics and the state of the chamber prior to each shot a compared with requirements from the driver and target. These include ablation mechanisms, vapor transport and control, possible aerosol formation, as well as protective jet behavior. This paper was motivated by a town meeting on this subject which helped identify the major issues, assess the latest results, review the capabilities of existing modeling and experimental facilities with respect to addressing remaining issues, and helping guide future analysis and R&D efforts; the paper covers these exact points.
Date:
January 24, 2005
Creator:
Raffray, A. R.; Meier, W.; Abdel-Khalik, S.; Bonazza, R.; Calderoni, P.; Debonnel, C. S. et al.
Object Type:
Article
System:
The UNT Digital Library
Immobilization of Radionuclides in the Hanford Vadose Zone by Incorporation in Solid Phases
The Department of Energy's Hanford Nuclear Site located in Washington State has accumulated over 2 million curies of radioactive waste from activities related to the production of plutonium (Ahearne, 1997). Sixty-seven of the single-shelled tanks located at the site are thought to have leaked, allowing between 2 and 4 million liters of waste fluids into the underlying vadose zone. The chemical processes employed at the Hanford Site to extract plutonium, as well as the need to minimize corrosion of the high-carbon steel storage tanks, resulted in uncharacterized hyperalkaline waste streams rich in radionuclides as well as other species including significant amounts of sodium and aluminum.
Date:
January 24, 2005
Creator:
Gordon E. Brown, Jr.; Catalano, Jeffrey G.; Warner, Jeffrey A.; Shaw, Samual & Grolimund, Daniel
Object Type:
Report
System:
The UNT Digital Library