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3D Simulations of the NIF Indirect Drive Ignition Target Design
The radiation hydrodynamics code Hydra is used to quantify the sensitivity of different NIF ignition point designs to several 3D effects. Each of the 48 NIF quads is included in the calculations and is allowed to have different power. With this model they studied the effect on imploded core symmetry of discrete laser spots (as opposed to idealized azimuthally-averaged rings) and random variations in laser power.
Date:
January 5, 2010
Creator:
Jones, O. S.; Milovich, J. L.; Callahan, D. A.; Edwards, M. J.; Landen, O. L.; Salmonson, J. D. et al.
Object Type:
Article
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 112, No. 21, Ed. 1 Tuesday, January 5, 2010
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 5, 2010
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Americans with Disabilities Act and Emergency Preparedness and Response
This report discusses the Americans with Disabilities Act (ADA), which provides broad nondiscrimination protection for individuals with disabilities in employment, public services, and public accommodations and services operated by private entities. Although the ADA does not include provisions specifically discussing its application to disasters, its nondiscrimination provisions are applicable to emergency preparedness and responses to disasters.
Date:
January 5, 2010
Creator:
Jones, Nancy Lee
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 90, No. 3, Ed. 1 Tuesday, January 5, 2010
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 5, 2010
Creator:
Clements, Clifford E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 104, No. 2, Ed. 1 Tuesday, January 5, 2010
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
January 5, 2010
Creator:
Cartwright, Brian & Velvin, Candace E.
Object Type:
Newspaper
System:
The Portal to Texas History
Chinese Tire Imports: Section 421 Safeguards and the World Trade Organization (WTO)
This report discusses GATT Article XIX and the WTO Agreement on Safeguards, Paragraph 16 of China's WTO Accession Protocol, Section 421 of the Trade Act of 1974 and Section 421 Investigation.
Date:
January 5, 2010
Creator:
Grimmett, Jeanne J.
Object Type:
Report
System:
The UNT Digital Library
The Clifton Record (Clifton, Tex.), Vol. 117, No. 1, Ed. 1 Tuesday, January 5, 2010
Weekly newspaper from Clifton, Texas that includes local, state and national news along with advertising.
Date:
January 5, 2010
Creator:
Phillips, Dennis
Object Type:
Newspaper
System:
The Portal to Texas History
Community Oriented Policing Services (COPS): Background, Legislation, and Funding
This report discusses the Community Oriented Policing Services (COPS) program, which was created by Title I of the Violent Crime Control and Law Enforcement Act of 1994 (P.L. 103-322). The mission of the COPS program is to advance community policing in all jurisdictions across the United States. Several bills introduced in the 111th Congress would either modify the COPS program, reauthorize appropriations for the program, or both.
Date:
January 5, 2010
Creator:
James, Nathan
Object Type:
Report
System:
The UNT Digital Library
COMPARISON OF OXALIC ACID CLEANING RESULTS AT SRS AND HANFORD AND THE IMPACT ON ENHANCED CHEMICAL CLEANING DEPLOYMENT
Waste tanks must be rendered clean enough to satisfy very rigorous tank closure requirements. During bulk waste removal, most of the radioactive sludge and salt waste is removed from the waste tank. The waste residue on the tank walls and interior components and the waste heel at the bottom of the tank must be removed prior to tank closure to render the tank clean enough to meet the regulatory requirement for tank closure. Oxalic acid has been used within the DOE complex to clean residual materials from carbon steel tanks with varying degrees of success. Oxalic acid cleaning will be implemented at both the Savannah River Site and Hanford to clean tanks and serves as the core cleaning technology in the process known as Enhanced Chemical Cleaning. Enhanced Chemical Cleaning also employs a process that decomposes the spent oxalic acid solutions. The oxalic acid cleaning campaigns that have been performed at the two sites dating back to the 1980's are compared. The differences in the waste characteristics, oxalic acid concentrations, flushing, available infrastructure and execution of the campaigns are discussed along with the impact on the effectiveness of the process. The lessons learned from these campaigns that are being incorporated …
Date:
January 5, 2010
Creator:
Spires, R. & Ketusky, E.
Object Type:
Article
System:
The UNT Digital Library
Concentrating Solar Panels: Bringing the Highest Power and Lowest Cost to the Rooftop
Soliant Energy is a venture-capital-backed startup focused on bringing advanced concentrating solar panels to market. Our fundamental innovation is that we are the first company to develop a racking solar concentrator specifically for commercial rooftop applications, resulting in the lowest LCOE for rooftop electricity generation. Today, the commercial rooftop segment is the largest and fastest-growing market in the solar industry. Our concentrating panels can make a major contribution to the SAI's objectives: reducing the cost of solar electricity and rapidly deploying capacity. Our commercialization focus was re-shaped in 2009, shifting from an emphasis solely on panel efficiency to LCOE. Since the inception of the SAI program, LCOE has become the de facto standard for comparing commercial photovoltaic systems. While estimation and prediction models still differ, the emergence of performance-based incentive (PBI) and feed-in tariff (FIT) systems, as well as power purchase agreement (PPA) financing structures make LCOE the natural metric for photovoltaic systems. Soliant Energy has designed and demonstrated lower-cost, higher-power solar panels that consists of 6 (500X) PV module assemblies utilizing multi-junction cells and an integrated two-axis tracker. In addition, we have designed and demonstrated a prototype 1000X panel assembly with 8. Cost reductions relative to conventional flat panel …
Date:
January 5, 2010
Creator:
Deck, Michael & Russell, Rick
Object Type:
Report
System:
The UNT Digital Library
Continuing Resolutions: Latest Action and Brief Overview of Recent Practices
This report provides information about the Latest Action and Brief Overview of Recent Practices on Continuing Resolutions.
Date:
January 5, 2010
Creator:
Streeter, Sandy
Object Type:
Report
System:
The UNT Digital Library
Derivation and Solution of Multifrequency Radiation Diffusion Equations for Homogeneous Refractive Lossy Media
Starting from the radiation transport equation for homogeneous, refractive lossy media, we derive the corresponding time-dependent multifrequency diffusion equations. Zeroth and first moments of the transport equation couple the energy density, flux and pressure tensor. The system is closed by neglecting the temporal derivative of the flux and replacing the pressure tensor by its diagonal analogue. The system is coupled to a diffusion equation for the matter temperature. We are interested in modeling annealing of silica (SiO{sub 2}). We derive boundary conditions at a planar air-silica interface taking account of reflectivities. The spectral dimension is discretized into a finite number of intervals leading to a system of multigroup diffusion equations. Three simulations are presented. One models cooling of a silica slab, initially at 2500 K, for 10 s. The other two are 1D and 2D simulations of irradiating silica with a CO{sub 2} laser, {lambda} = 10.59 {micro}m. In 2D, we anneal a disk (radius = 0.4, thickness = 0.4 cm) with a laser, Gaussian profile (r{sub 0} = 0.5 mm for 1/e decay).
Date:
January 5, 2010
Creator:
Shestakov, A I; Vignes, R M & Stolken, J S
Object Type:
Article
System:
The UNT Digital Library
Dihadron Azimuthal Correlation from Collins Effect in Unpolarized Hadron Collisions
We study the dihadron azimuthal correlation produced nearly back-to-back in unpolarized hadron collisions, arising from the product of two Collins fragmentation functions. Using the latest Collins fragmentation functions extracted from the global analysis of available experimental data, we make predictions for the azimuthalcorrelation of two-pion production in pp collisions at RHIC energies. We find that the correlation is sizable in the mid-rapidity region for moderate jet transverse momentum.
Date:
January 5, 2010
Creator:
Yuan, Feng
Object Type:
Article
System:
The UNT Digital Library
Dust-Plasma Interactions
The objective of our theoretical research under this grant over the past 3 years was to develop new understanding in a range of topics in the physics of dust-plasma interactions, with application to space and the laboratory. We conducted studies related to the physical properties of dust, waves and instabilities in both weakly coupled and strongly coupled dusty plasmas, and innovative possible applications. A major consideration in our choice of topics was to compare theory with experiments or observations, and to motivate new experiments, which we believe is important for developing this relatively new field. Our research is summarized, with reference to our list of journal publications.
Date:
January 5, 2010
Creator:
Rosenberg, M.
Object Type:
Report
System:
The UNT Digital Library
Elastic properties of Pu metal and Pu-Ga alloys
We present elastic properties, theoretical and experimental, of Pu metal and Pu-Ga ({delta}) alloys together with ab initio equilibrium equation-of-state for these systems. For the theoretical treatment we employ density-functional theory in conjunction with spin-orbit coupling and orbital polarization for the metal and coherent-potential approximation for the alloys. Pu and Pu-Ga alloys are also investigated experimentally using resonant ultrasound spectroscopy. We show that orbital correlations become more important proceeding from {alpha} {yields} {beta} {yields} {gamma} plutonium, thus suggesting increasing f-electron correlation (localization). For the {delta}-Pu-Ga alloys we find a softening with larger Ga content, i.e., atomic volume, bulk modulus, and elastic constants, suggest a weakened chemical bonding with addition of Ga. Our measurements confirm qualitatively the theory but uncertainties remain when comparing the model with experiments.
Date:
January 5, 2010
Creator:
Soderlind, P; Landa, A; Klepeis, J E; Suzuki, Y & Migliori, A
Object Type:
Article
System:
The UNT Digital Library
Energy and Water Development: FY2010 Appropriations
This report discusses the Energy and Water Development appropriations bill that provides funding for civil works projects of the Army Corps of Engineers (Corps), for the Department of the Interior's Bureau of Reclamation (Reclamation), the Department of Energy (DOE), and several independent agencies.
Date:
January 5, 2010
Creator:
Behrens, Carl E.
Object Type:
Report
System:
The UNT Digital Library
Environmental sensor networks and continuous data quality assurance to manage salinity within a highly regulated river basin
This paper describes a new approach to environmental decision support for salinity management in the San Joaquin Basin of California that focuses on web-based data sharing using YSI Econet technology and continuous data quality management using a novel software tool, Aquarius.
Date:
January 5, 2010
Creator:
Quinn, N.W.T.; Ortega, R. & Holm, L.
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Tuesday, January 5, 2010
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 5, 2010
Creator:
Pittman, Jerry & Wray, Kelly
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Federal Register, Volume 75, Number 2, January 5, 2010, Pages 219-736
Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.
Date:
January 5, 2010
Creator:
United States. Office of the Federal Register.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Federalism Issues in Surface Transportation Policy: Past and Present
This report provides a historical perspective on contemporary federalism issues in surface transportation policy that are likely to be addressed by Congress during the 111th Congress, including possible devolution of programmatic responsibility to states and proposals to change state maintenance-of-effort requirements and state cost matching requirements.
Date:
January 5, 2010
Creator:
Dilger, Robert J.
Object Type:
Report
System:
The UNT Digital Library
The Greensheet (Houston, Tex.), Vol. 40, No. 577, Ed. 1 Tuesday, January 5, 2010
Free weekly newspaper that includes business and classified advertising.
Date:
January 5, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 40, No. 578, Ed. 1 Tuesday, January 5, 2010
Free weekly newspaper that includes business and classified advertising.
Date:
January 5, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Identity Theft: Trends and Issues
This report first provides a brief federal legislative history of identity theft laws. It analyzes the current trends in identity theft, including prevalent identity theft-related crimes, the federal agencies involved in combating identity theft, and the trends in identity theft complaints and prosecutions. The report also discusses the relationship between data breaches and identity theft as well as possible effects of the FTC's Identity Theft Red Flags Rule, effective June 1, 2010.
Date:
January 5, 2010
Creator:
Finklea, Kristin M.
Object Type:
Report
System:
The UNT Digital Library
International Terrorism and Transnational Crime: Security Threats, U.S. Policy, and Considerations for Congress
This report provides a primer on the confluence of transnational terrorist and criminal groups and related activities abroad. It evaluates possible motivations and disincentives for cooperation between terrorist and criminal organizations, variations in the scope of crime-terrorism links, and the types of criminal activities--fundraising, material and logistics support, and exploitation of corruption and gaps in the rule of law--used by terrorist organizations to sustain operations.
Date:
January 5, 2010
Creator:
Rollins, John; Wyler, Liana Sun & Rosen, Seth
Object Type:
Report
System:
The UNT Digital Library