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738 Matching Results
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Generation of angular-momentum-dominated electron beams from a photoinjector
Various projects under study require an angular-momentum-dominated electron beam generated by a photoinjector. Some of the proposals directly use the angular-momentum-dominated beams (e.g. electron cooling of heavy ions), while others require the beam to be transformed into a flat beam (e.g. possible electron injectors for light sources and linear colliders). In this paper, we report our experimental study of an angular-momentum-dominated beam produced in a photoinjector, addressing the dependencies of angular momentum on initial conditions. We also briefly discuss the removal of angular momentum. The results of the experiment, carried out at the Fermilab/NICADD Photoinjector Laboratory, are found to be in good agreement with theoretical and numerical models.
Date:
November 30, 2004
Creator:
Sun, Yin-E.; Piot, Philippe; Kim, Kwang-Je; Barov, Nikolas; Lidia, Steven; Santucci, James et al.
Object Type:
Article
System:
The UNT Digital Library
High Efficiency Hydrogen Production from Nuclear Energy: Laboratory Demonstration of S-I Water-Splitting
The objective of the French CEA, US-DOE INERI project is to perform a lab scale demonstration of the sulfur iodine (S-I) water splitting cycle, and assess the potential of this cycle for application to nuclear hydrogen production. The project will design, construct and test the three major component reaction sections that make up the S-I cycle. The CEA will design and test the prime (Bunsen) reaction section. General Atomics will develop and test the HI decomposition section, and SNL will develop and test the H2SO4 decomposition section. Activities for this period included initial program coordination and information exchange, the development of models and analyses that will support the design of the component sections, and preliminary designs for the component reaction sections. The sections are being designed to facilitate integration into a closed loop demonstration in a later stage of the program.
Date:
November 30, 2004
Creator:
Buckingham, R.; Russ, B.; Brown, L.; Besenbruch, G. E.; Gelbard, F.; Pickard, F. S. et al.
Object Type:
Report
System:
The UNT Digital Library
Homeland Security: Further Actions Needed to Coordinate Federal Agencies' Facility Protection Efforts and Promote Key Practices
A letter report issued by the Government Accountability Office with an abstract that begins "The war on terrorism has made physical security for federal facilities a governmentwide concern. The Interagency Security Committee (ISC), which is chaired by the Department of Homeland Security (DHS), is tasked with coordinating federal agencies' facility protection efforts, developing protection standards, and overseeing implementation. GAO's objectives were to (1) assess ISC's progress in fulfilling its responsibilities and (2) identify key practices in protecting federal facilities and any related implementation obstacles."
Date:
November 30, 2004
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
The HSU Brand (Abilene, Tex.), Vol. 92, No. 8, Ed. 1, Tuesday, November 30, 2004
Weekly student newspaper from Hardin-Simmons University in Abilene, Texas that includes local, state and campus news along with advertising.
Date:
November 30, 2004
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Human Factors Guidance for Control Room and Digital Human-System Interface Design and Modification, Guidelines for Planning, Specification, Design, Licensing, Implementation, Training, Operation and Maintenance
Nuclear plant operators face a significant challenge designing and modifying control rooms. This report provides guidance on planning, designing, implementing and operating modernized control rooms and digital human-system interfaces.
Date:
November 30, 2004
Creator:
R. Fink, D. Hill, J. O'Hara
Object Type:
Report
System:
The UNT Digital Library
The Implementation of the Finite-Volume Dynamical Core in the Community Atmosphere Model
A distributed memory message-passing parallel implementation of a finite-volume discretization of the primitive equations in the Community Atmosphere Model is presented. These three-dimensional equations can be decoupled into a set of two-dimensional equations by the introduction of a floating vertical coordinate, resulting in considerable potential parallelism. Subsequent analysis of the data dependencies--in particular those arising from the polar singularity of the latitude-longitude coordinate system--suggests that two separate domain decompositions should be employed, each tailored for a different part of the model. The implementation requires that data be periodically redistributed between these two decompositions. Furthermore, data from nearest neighbors are kept in halo regions, which are updated between iterations. These data movements are optimized through one-sided communication primitives and multithreading. The resulting algorithm is shown to scale to very large machine configurations, even for relatively coarse resolutions.
Date:
November 30, 2004
Creator:
Sawyer, W. B. & Mirin, A. A.
Object Type:
Article
System:
The UNT Digital Library
IMPROVED APPROACHES TO DESIGN OF POLYMER GEL TREATMENTS IN MATURE OIL FIELDS: FIELD DEMONSTRATION IN DICKMAN FIELD, NESS COUNTY, KANSAS
This report describes the results of the one-year project entitled ''Improved Approaches to Design of Polymer Gel Treatments in Mature Oil Fields: Field Demonstration in Dickman Field, Ness County, Kansas''. The project was a 12-month collaboration of Grand Mesa Operating Company (a small independent), TIORCO Inc. (a company focused on improved recovery technology) and the University of Kansas. The study undertook tasks to determine an optimum polymer gel treatment design in Mississippian reservoirs, demonstrate application, and evaluate the success of the program. The project investigated geologic and engineering parameters and cost-effective technologies required for design and implementation of effective polymer gel treatment programs in the Mississippian reservoir in the Midcontinent. The majority of Mississippian production in Kansas occurs at or near the top of the Mississippian section just below the regional sub-Pennsylvanian unconformity and karst surface. Dickman Field with the extremely high water cuts and low recovery factors is typical of Mississippian reservoirs. Producibility problems in these reservoirs include inadequate reservoir characterization, drilling and completion design problems, and most significantly extremely high water cuts and low recovery factors that place continued operations at or near their economic limits. Geologic, geophysical and engineering data were integrated to provide a technical foundation …
Date:
November 30, 2004
Creator:
Fowler, Ronald
Object Type:
Report
System:
The UNT Digital Library
[Man takes notes during a meeting]
Families gather in a cafeteria for a meeting on whether or not to wear school uniforms in the Fort Worth Independent School District.
Date:
November 30, 2004
Creator:
Castillo, José L.
Object Type:
Photograph
System:
The UNT Digital Library
Multi-Attribute Seismic/Rock Physics Approach to Characterizing Fractured Reservoirs
Most current seismic methods to seismically characterize fractures in tight reservoirs depend on a few anisotropic wave propagation signatures that can arise from aligned fractures. While seismic anisotropy can be a powerful fracture diagnostic, a number of situations can lessen its usefulness or introduce interpretation ambiguities. Fortunately, laboratory and theoretical work in rock physics indicates that a much broader spectrum of fracture seismic signatures can occur, including a decrease in P- and S-wave velocities, a change in Poisson's ratio, an increase in velocity dispersion and wave attenuation, as well as well as indirect images of structural features that can control fracture occurrence. The goal of this project was to demonstrate a practical interpretation and integration strategy for detecting and characterizing natural fractures in rocks. The approach was to exploit as many sources of information as possible, and to use the principles of rock physics as the link among seismic, geologic, and log data. Since no single seismic attribute is a reliable fracture indicator in all situations, the focus was to develop a quantitative scheme for integrating the diverse sources of information. The integrated study incorporated three key elements: The first element was establishing prior constraints on fracture occurrence, based on …
Date:
November 30, 2004
Creator:
Mavko, Gary
Object Type:
Report
System:
The UNT Digital Library
NADS: A Web Applet for Manipulation and Graphical Viewing of Nuclear Data
We have developed a program called NADS (Nuclear and Atomic Data System) which provides a web-based, user-friendly interface for viewing nuclear data. NADS uses a client/server model. The client is a Java applet that runs in a web browser. The server is a Python code that delivers pointwise data to the applet per user request and then plots the data. The data is also stored in tables for viewing and modifying. NADS can display 2-D, 3-D and 4-D (time sliced) data in a powerful, user-friendly environment. Currently, evaluated nuclear data are available from ENDF/B-V, ENDF/B-VI, JENDL, JEF and Lawrence Livermore National Laboratory's ENDL databases. LLNL's ENDL database has data for neutron, gamma and charged particles as projectiles. In addition to displaying and saving data, NADS has the capability to perform computations with the data. NADS is accessible over the Internet at http://nuclear.llnl.gov/.
Date:
November 30, 2004
Creator:
McKinley, M S; Beck, B R & McNabb, D P
Object Type:
Article
System:
The UNT Digital Library
Neutron and Charged-Particle Induced Cross Sections for Radiochemistry for Isotopes of Scandium, Titanium, Vanadium, Chromium, Manganese, and Iron
We have developed a set of modeled nuclear reaction cross sections for use in radiochemical diagnostics. Local systematics for the input parameters required by the Hauser-Feshbach statistical model were developed and used to calculate neutron and proton induced nuclear reaction cross sections in the mass region of scandium, titanium, vanadium, chromium, manganese, and iron (21 {le} Z {le} 26, 20 {le} N {le} 32).
Date:
November 30, 2004
Creator:
Kelley, K.; Hoffman, R. D.; Dietrich, F. S.; Bauer, R. & Mustafa, M.
Object Type:
Report
System:
The UNT Digital Library
Neutron and Charged-Particle Induced Cross Sections for Radiochemistry in the Region of Samarium, Europium, and Gadolinium
We have developed a set of modeled nuclear reaction cross sections for use in radiochemical diagnostics. Systematics for the input parameters required by the Hauser-Feshbach statistical model were developed and used to calculate neutron and proton induced nuclear reaction cross sections in the mass region of samarium, europium and gadolinium (62 {le} Z {le} 64, 82 {le} N {le} 96).
Date:
November 30, 2004
Creator:
Hoffman, R. D.; Kelley, K.; Dietrich, F. S.; Bauer, R. & Mustafa, M.
Object Type:
Report
System:
The UNT Digital Library
Oil and Gas Development: Challenges to Agency Decisions and Opportunities for BLM to Standardize Data Collection
A letter report issued by the Government Accountability Office with an abstract that begins "U.S. consumption of oil and natural gas increasingly outpaces domestic production, a gap that is expected to grow rapidly over the next 20 years. There has been increasing concern about U.S. reliance on foreign energy sources. One option being considered is to increase domestic production of resources on land under the jurisdiction of the Department of the Interior's Bureau of Land Management (BLM), Bureau of Indian Affairs (BIA) and Minerals Management Service (MMS) and the Department of Agriculture's Forest Service. GAO determined (1) the stages when agency decisions about oil and gas development can be challenged by the public, (2) the extent to which BLM gathers and uses public challenge data to manage its oil and gas program, and (3) for fiscal years 1999-2003, the number of MMS offshore development decisions that were challenged."
Date:
November 30, 2004
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
The Oklahoma Daily (Norman, Okla.), Vol. 88, No. 70, Ed. 1 Tuesday, November 30, 2004
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
November 30, 2004
Creator:
Warren, Lee B.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Optimal selection of on-site generation with combined heat andpower applications
While demand for electricity continues to grow, expansion of the traditional electricity supply system, or macrogrid, is constrained and is unlikely to keep pace with the growing thirst western economies have for electricity. Furthermore, no compelling case has been made that perpetual improvement in the overall power quality and reliability (PQR)delivered is technically possible or economically desirable. An alternative path to providing high PQR for sensitive loads would generate close to them in microgrids, such as the Consortium for Electricity Reliability Technology Solutions (CERTS) Microgrid. Distributed generation would alleviate the pressure for endless improvement in macrogrid PQR and might allow the establishment of a sounder economically based level of universal grid service. Energy conversion from available fuels to electricity close to loads can also provide combined heat and power (CHP) opportunities that can significantly improve the economics of small-scale on-site power generation, especially in hot climates when the waste heat serves absorption cycle cooling equipment that displaces expensive on-peak electricity. An optimization model, the Distributed Energy Resources Customer Adoption Model (DER-CAM), developed at Berkeley Lab identifies the energy bill minimizing combination of on-site generation and heat recovery equipment for sites, given their electricity and heat requirements, the tariffs they face, …
Date:
November 30, 2004
Creator:
Siddiqui, Afzal S.; Marnay, Chris; Bailey, Owen & HamachiLaCommare, Kristina
Object Type:
Article
System:
The UNT Digital Library
Oral History Interview with John Haselby, November 30, 2004
The National Museum of the Pacific War presents an oral interview with John V. Haselby. Haselby was born in Grass Creek, Indiana on 24 April 1919. Haselby had 4 brothers and 5 sisters. He and his brothers all served and survived their service to the war effort. Haselby attended flight training at Chickasha, Oklahoma and received his wings and commission in Victoria, Texas in April 1942. He was sent to Morocco aboard USS Chenango (ACV-28) which was transporting 78 P40 airplanes that had been hoisted onboard. He flew 78 missions from Morocco to Sicily protecting and defending ground troops as they moved. Haselby was awarded a Purple Heart for an injury received during a mission flying close to the ground. He also received the Distinguished Flying Cross, the Air Medal, and 7 Oak Leaf Clusters. Haselby made a career out of the Air Force and retired as a lieutenant colonel in 1957.
Date:
November 30, 2004
Creator:
Haselby, John
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with John Haselby, November 30, 2004
The National Museum of the Pacific War presents an oral interview with John V. Haselby. Haselby was born in Grass Creek, Indiana on 24 April 1919. Haselby had 4 brothers and 5 sisters. He and his brothers all served and survived their service to the war effort. Haselby attended flight training at Chickasha, Oklahoma and received his wings and commission in Victoria, Texas in April 1942. He was sent to Morocco aboard USS Chenango (ACV-28) which was transporting 78 P40 airplanes that had been hoisted onboard. He flew 78 missions from Morocco to Sicily protecting and defending ground troops as they moved. Haselby was awarded a Purple Heart for an injury received during a mission flying close to the ground. He also received the Distinguished Flying Cross, the Air Medal, and 7 Oak Leaf Clusters. Haselby made a career out of the Air Force and retired as a lieutenant colonel in 1957.
Date:
November 30, 2004
Creator:
Haselby, John
Object Type:
Text
System:
The Portal to Texas History
Perry Daily Journal (Perry, Okla.), Vol. 111, No. 228, Ed. 1 Tuesday, November 30, 2004
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 30, 2004
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Plume Delineation in the BC Cribs and Trenches Area
HydroGEOPHYSICS, Inc. and Pacific Northwest National Laboratory (PNNL) were contracted by Fluor Hanford Group, Inc. to conduct a geophysical investigation in the area of the BC Cribs and Trenches (subject site) at the Hanford Site in Richland, Washington. The BC Cribs and Trenches are located south of the 200 East Area. This document provides the details of the investigation to identify existing infrastructure from legacy disposal activities and to delineate the edges of a groundwater plume that contains radiological and heavy metal constituents beneath the 216-B-26 and 216-B-52 Trenches, and the 216-B-14 through 216-B-19 Cribs.
Date:
November 30, 2004
Creator:
Rucker, Dale F. & Sweeney, Mark D.
Object Type:
Report
System:
The UNT Digital Library
Power Systems Development Facility Gasification Test Campaign TC17
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 coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a KBR (formerly Kellogg Brown & Root) Transport Gasifier, a hot gas particulate control device, advanced syngas cleanup systems, and high-pressure solids handling systems. This report summarizes the results gasification operation with Illinois Basin bituminous coal in PSDF test campaign TC17. The test campaign was completed from October 25, 2004, to November 18, 2004. System startup and initial operation was accomplished with Powder River Basin (PRB) subbituminous coal, and then the system was transitioned to Illinois Basin coal operation. The major objective for this test was to evaluate the PSDF gasification process operational stability and performance using the Illinois Basin coal. The Transport Gasifier train was operated for 92 hours using PRB coal and for 221 hours using Illinois Basin coal.
Date:
November 30, 2004
Creator:
Southern Company Services
Object Type:
Report
System:
The UNT Digital Library
Radiological Survey Tool Set for ArcGIS 8.3 and ArcPad 6.0
The Radiological Control Operations (RCO) group at the Savannah River Site (SRS) is tasked with conducting routine surveys for the detection of radiological contaminants in the environment. The Radiological Survey Tool Set (RSTS) was developed by the Environmental & Geographic Information Systems (EGIS) group of SRS to assist RCO personnel in this survey process. The tool set consists of two major components. The first component is a custom extension for ArcGIS 8.3 that allows the user to interactively create a sampling plan prior to entering the field. Additionally, the extension allows the user to upload field-collected data to the GIS with post-processing functionality. The second component is a custom ArcPad 6.0 applet. This applet provides the user with navigational capabilities to a selected origin point with the help of Global Positioning Systems (GPS) technology, and the recording of the sample data results into a hand-held field computer via ArcPad 6.0 software.
Date:
November 30, 2004
Creator:
ROGER, COTTRELL
Object Type:
Article
System:
The UNT Digital Library
Rains County Leader (Emory, Tex.), Vol. 117, No. 25, Ed. 1 Tuesday, November 30, 2004
Weekly newspaper from Emory, Texas that includes local, state, and national news along with advertising.
Date:
November 30, 2004
Creator:
Hill, Earl Clyde, Jr.
Object Type:
Newspaper
System:
The Portal to Texas History
Ray tracing through a hexahedral mesh in HADES
In this paper we describe a new ray tracing method targeted for inclusion in HADES. The algorithm tracks rays through three-dimensional tetrakis hexahedral mesh objects, like those used by the ARES code to model inertial confinement experiments.
Date:
November 30, 2004
Creator:
Henderson, G L & Aufderheide, M B
Object Type:
Article
System:
The UNT Digital Library
Reactivity of Crystalline Silicotitanate (CST) and Hazardous Metal/Actinide Loading During Low Curie Salt Use
Crystalline Silicotitanate (CST) in its engineered form (IONSIV (registered) IE-911) continues to be studied for possible use for removing radioactive cesium from several types of waste solutions at the Savannah River Site. This study involved deriving information about spent CST that assists in determining possible disposition alternatives. Results for this work include: After passing 3000 column volumes of a dissolved saltcake simulant containing RCRA hazardous metals, the spent CST passed a TCLP test and is RCRA nonhazardous. The spent CST was found to have transuranic concentrations greater than the TRU limit of 100 nCi/g. The triplicate measurement showed TRU levels greater than 4000 nCi/g. Studies involving simulating storage of ground CST in sludge slurries indicated no detrimental effects on the measured yield stress or viscosity of the slurries when stored for up to 4 months at 50 degrees C. During the storage testing, there was no indication of significant degradation of the C ST as measured by in growth of CST-specific elements in the liquid phase of the slurry. Also, during storage tests minor desorption of cesium from the ground CST material was observed.
Date:
November 30, 2004
Creator:
William, Wilmarth; Dukes, V. H. & Mills, J. T.
Object Type:
Report
System:
The UNT Digital Library