States

Diffusion Simulation and Lifetime Calculation at RHIC (open access)

Diffusion Simulation and Lifetime Calculation at RHIC

The beam lifetime is an important parameter for any storage ring. For protons in RHIC it is dominated by the non-linear nature of the head-on collisions that causes the particles to diffuse outside the stable area in phase space. In this report we show results from diffusion simulation and lifetime calculation for the 2006 and 2008 polarized proton runs in RHIC.
Date: January 2, 2009
Creator: Abreu,N.P.; Fischer, W.; Luo, Y. & Robert-Demolaize, G.
Object Type: Report
System: The UNT Digital Library
METAL FILTERS FOR PRESSURIZED FLUID BED COMBUSTION (PFBC) APPLICATIONS (open access)

METAL FILTERS FOR PRESSURIZED FLUID BED COMBUSTION (PFBC) APPLICATIONS

Advanced coal and biomass-based gas turbine power generation technologies (IGCC, PFBC, PCFBC, and Hipps) are currently under development and demonstration. Efforts at the Siemens Westinghouse Power Corporation (SWPC) have been focused on the development and demonstration of hot gas filter systems as an enabling technology for power generation. As part of the demonstration effort, SWPC has been actively involved in the development of advanced filter materials and component configuration, has participated in numerous surveillance programs characterizing the material properties and microstructure of field-tested filter elements, and has undertaken extended, accelerated filter life testing programs. This report reviews SWPC's material and component assessment efforts, identifying the performance, stability, and life of porous commercial metal, advanced alloy, and intermetallic filters under simulated, pressurized fluidized-bed combustion (PFBC) conditions.
Date: January 2, 2004
Creator: Alvin, M. A.
Object Type: Report
System: The UNT Digital Library
Colleges and Universities Attended by Representatives of the 107th Congress (open access)

Colleges and Universities Attended by Representatives of the 107th Congress

This report identifies the colleges and universities attended by representatives and delegates in the 107th Congress grouped by state.
Date: January 2, 2002
Creator: Amer, Mildred L.
Object Type: Report
System: The UNT Digital Library
Colleges and Universities Attended by Senators of the 107th Congress (open access)

Colleges and Universities Attended by Senators of the 107th Congress

This report identifies the colleges and universities attended by Senators serving in the 107th Congress. Where available in published sources, the degrees earned are also listed.
Date: January 2, 2002
Creator: Amer, Mildred L.
Object Type: Report
System: The UNT Digital Library
Phase patterns of coupled oscillators with application to wireless communication (open access)

Phase patterns of coupled oscillators with application to wireless communication

Here we study the plausibility of a phase oscillators dynamical model for TDMA in wireless communication networks. We show that emerging patterns of phase locking states between oscillators can eventually oscillate in a round-robin schedule, in a similar way to models of pulse coupled oscillators designed to this end. The results open the door for new communication protocols in a continuous interacting networks of wireless communication devices.
Date: January 2, 2008
Creator: Arenas, A.
Object Type: Article
System: The UNT Digital Library
Food and Agricultural Imports from China (open access)

Food and Agricultural Imports from China

This report details the information related to U.S. food and Agricultural imports from China. The contents include trade trends, U.S import safeguards, FDA import refusals, Chinese food safety challenges, and Congressional consideration
Date: January 2, 2008
Creator: Becker, Geoffrey S.
Object Type: Report
System: The UNT Digital Library
Horse Slaughter Prevention Bills and Issues (open access)

Horse Slaughter Prevention Bills and Issues

This report discusses the bills and issues regarding horses that are slaughtered for human food. Debate revolves around the acceptability of horse slaughter, and how to care for and/or humanely dispose of horses if they no longer become human food.
Date: January 2, 2008
Creator: Becker, Geoffrey S.
Object Type: Report
System: The UNT Digital Library
Humane Treatment of Farm Animals: Overview and Issues (open access)

Humane Treatment of Farm Animals: Overview and Issues

This report provides an overview of the debate and legislation to modify or curtail some practices regarding animal care on the farm, during transport, or at slaughter.
Date: January 2, 2008
Creator: Becker, Geoffrey S.
Object Type: Report
System: The UNT Digital Library
U.S. Food and Agricultural Imports: Safeguards and Selected Issues (open access)

U.S. Food and Agricultural Imports: Safeguards and Selected Issues

None
Date: January 2, 2008
Creator: Becker, Geoffrey S.
Object Type: Report
System: The UNT Digital Library
Food Safety: Selected Issues and Bills in the 110th Congress (open access)

Food Safety: Selected Issues and Bills in the 110th Congress

This report addresses selected issues and bills in the 110th Congress related to Food Safety.
Date: January 2, 2008
Creator: Becker, GeoffreyS.
Object Type: Report
System: The UNT Digital Library
Nuclear Nonproliferation Issues (open access)

Nuclear Nonproliferation Issues

None
Date: January 2, 2002
Creator: Behrens, Carl E.
Object Type: Report
System: The UNT Digital Library
Proceedings of the 3rd US-Japan Workshop on Plasma Polarization Spectroscopy (open access)

Proceedings of the 3rd US-Japan Workshop on Plasma Polarization Spectroscopy

The third US-Japan Workshop on Plasma Polarization Spectroscopy was held at the Lawrence Livermore National Laboratory in Livermore, California, on June 18-21, 2001. The talks presented at this workshop are summarized in these proceedings. The papers cover both experimental investigation and applications of plasma polarization spectroscopy as well as the theoretical foundation and formalisms to understand and describe the polarization phenomena. The papers give an overview of the history of plasma polarization spectroscopy, derive the formal aspects of polarization spectroscopy, including the effects of electric and magnetic fields, discuss spectra perturbed by intense microwave fields, charge exchange, and dielectronic recombination, and present calculations of various collisional excitation and ionization cross sections and the modeling of plasma polarization spectroscopy phenomena. Experimental results are given from the WT-3 tokamak, the MST reverse field pinch, the Large Helical Device, the GAMMA 10 mirror machine, the Nevada Terrawatt Facility, the Livermore EBIT-II electron beam ion trap, and beam-foil spectroscopy. In addition, results were presented from studies of several laser-produced plasma experiments and new instrumental techniques were demonstrated.
Date: January 2, 2002
Creator: Beiersdorfer, P & Flyimoto, T
Object Type: Report
System: The UNT Digital Library
Superconducting Storage Cavity for RHIC (open access)

Superconducting Storage Cavity for RHIC

This document provides a top-level description of a superconducting cavity designed to store hadron beams in the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. It refers to more detailed documents covering the various issues in designing, constructing and operating this cavity. The superconducting storage cavity is designed to operate at a harmonic of the bunch frequency of RHIC at a relatively low frequency of 56 MHz. The current storage cavities of RHIC operate at 197 MHz and are normal-conducting. The use of a superconducting cavity allows for a high gap voltage, over 2 MV. The combination of a high voltage and low frequency provides various advantages stemming from the resulting large longitudinal acceptance bucket.
Date: January 2, 2009
Creator: Ben-Zvi, Ilan
Object Type: Report
System: The UNT Digital Library
Evaluation of Methods to Increase Light Under Ferry Terminals (open access)

Evaluation of Methods to Increase Light Under Ferry Terminals

To address concerns of resource agencies about the potential impacts of ferry terminal expansion on valuable habitat functions and resource use of nearshore areas, the Pacific Northwest National Laboratory (PNNL), in partnership with the Washington State Department of Transportation (WSDOT), conducted field trials with off-the-shelf products that promote light passage through dock structures. These products included a SunTunnel, deck prisms, and a metal halide greenhouse light. Light measurements (photosynthetically active radiation, PAR) were also recorded beneath glass blocks and a metal grating installed at Clinton Ferry Terminal on Whidbey Island, WA. A review of other studies measuring the effects of dock shading and alternate dock materials was conducted. PAR measurements from this study were related to minimum requirements for eelgrass Zostera marina photosynthesis and to the known maximum photosynthetic ?saturation? rate for Z. marina. We also related PAR measurements to what we know about light effects on juvenile salmonid feeding and passage under overwater structures. Of the light technologies tested, the metal halide light, SunTunnel, glass blocks, and grating potentially provide enough light for eelgrass growth underneath a ferry terminal with similar construction to the Clinton Ferry Terminal. All of these technologies would potentially provide adequate light under conditions where …
Date: January 2, 2002
Creator: Blanton, Susan L.; Thom, Ronald M.; Borde, Amy B.; Diefenderfer, Heida L. & Southard, John A.
Object Type: Report
System: The UNT Digital Library
Longitudinal Stability Calculations (open access)

Longitudinal Stability Calculations

Coupled bunch longitudinal stability in the presence of high frequency impedances is considered. A frequency domain technique is developed and compared with simulations. The frequency domain technique allows for absolute stability tests and is applied to the problem of longitudinal stability in RHIC with the new 56 MHz RF system.
Date: January 2, 2009
Creator: Blaskiewicz, M.
Object Type: Report
System: The UNT Digital Library
Border Security and Unmanned Aerial Vehicles (open access)

Border Security and Unmanned Aerial Vehicles

The use of Unmanned Aerial Vehicles (UAVs) to improve border security is a technique that has garnered congressional attention. This report examines the strengths and limitations of deploying UAVs along the borders and related issues for Congress. This report is not intended to provide in-depth information regarding technical or military capabilities of UAVs, but to discuss their application at the border.
Date: January 2, 2004
Creator: Blazakis, Jason
Object Type: Report
System: The UNT Digital Library
Proceedings of RIKEN/BNL Research Center Workshop Future Transversity Measurements (Volume 29). (open access)

Proceedings of RIKEN/BNL Research Center Workshop Future Transversity Measurements (Volume 29).

The RIKEN-BNL Research Center workshop on ''Future Transversity Measurements'' was held at BNL from September 18-20, 2000. The main goal of the workshop was to explore future measurements of transversity distributions. This issue is of importance to the RHIC experiments, which will study polarized proton-proton collisions with great precision. One of the workshop's goals was to enhance interactions between the DIS community at HERA and the spin community at RHIC in this field. The workshop has been well received by the participants; the number of 69 registered participants demonstrates broad interest in the workshop's topics. The program contained 35 talks and there was ample time for lively discussions. The program covered all recent work in the field and in addition some very elucidating educational talks were given. At the workshop the present status of the field was discussed and it has succeeded in stimulating new experimental and theoretical studies (e.g. model calculations for interference fragmentation functions (IFF), IFF analysis at DELPHI). It also functioned to focus attention on the open questions that need to be resolved for near future experiments. In general, the conclusions were optimistic, i.e. measuring the transversity functions seems to be possible, although some new experimental hurdles …
Date: January 2, 2001
Creator: Boer, D. & Grosse Perdekamp, M.
Object Type: Article
System: The UNT Digital Library
FDA Authority to Oversee Private Laboratories that Analyze Imported FDA-Regulated Food (open access)

FDA Authority to Oversee Private Laboratories that Analyze Imported FDA-Regulated Food

None
Date: January 2, 2009
Creator: Burrows, Vanessa K.
Object Type: Report
System: The UNT Digital Library
Homeland Security: Standards for State and Local Preparedness (open access)

Homeland Security: Standards for State and Local Preparedness

This report identifies types of preparedness standards, describes current activities to develop these standard, and discusses policy approaches that Congress might take in addressing this issue.
Date: January 2, 2003
Creator: Canada, Ben
Object Type: Report
System: The UNT Digital Library
Metastable Solid Solution Phases in the LiFePO4/FePO4 System (open access)

Metastable Solid Solution Phases in the LiFePO4/FePO4 System

None
Date: January 2, 2006
Creator: Chen, Guoying Chen; Song, Xiangyun & Richardson, Thomas J.
Object Type: Article
System: The UNT Digital Library
A second-order method for interface reconstruction in orthogonal coordinate systems (open access)

A second-order method for interface reconstruction in orthogonal coordinate systems

The authors present a second-order algorithm for reconstructing an interface from a distribution of volume fractions in a general orthogonal coordinate system with derivatives approximated using finite differences. The method approximates the interface curve by a piecewise-linear profile. An integral formulation is used that accounts for the orthogonal coordinate system in a natural way. The authors present results obtained using this method for tracking a material interface between two compressible media in spherical coordinates.
Date: January 2, 2002
Creator: Colella, P.; Graves, D.T. & Greenough, J.A.
Object Type: Report
System: The UNT Digital Library
Clean Water Act Issues in the 107th Congress (open access)

Clean Water Act Issues in the 107th Congress

Key water quality issues that may face the 107th Congress include: actions to implement existing provisions of the Clean Water Act (CWA), whether additional steps are necessary to achieve overall goals of the Act, and the appropriate federal role in guiding and paying for clean water activities. Legislative prospects for comprehensively amending the Act have for some time stalled over whether and exactly how to change the law. If clean water issues receive attention in the 107th Congress, consideration of specific issues will depend in part on the CWA policy agenda of the new Bush Administration and on priorities of the key committees that have major jurisdiction over the Act.
Date: January 2, 2002
Creator: Copeland, Claudia
Object Type: Report
System: The UNT Digital Library
Office of Industrial Technologies (OIT): Industrial Assessment Centers (open access)

Office of Industrial Technologies (OIT): Industrial Assessment Centers

Office of Industrial Technologies' Industrial Assessment Center (IACs). The IACs, based at universities across the country, provide small and mid-sized manufacturers with no-cost energy assessments.
Date: January 2, 2001
Creator: DOE Office of Industrial Technologies
Object Type: Book
System: The UNT Digital Library
Federal Research and Development Funding: FY2003 (open access)

Federal Research and Development Funding: FY2003

This report provides an overview on federal research and development funding for FY2003.
Date: January 2, 2003
Creator: Davey, Michael E.
Object Type: Report
System: The UNT Digital Library