UNT Libraries Government Documents Department - 117,647 Matching Results

Search Results

prev Results: 32711 - 32734 next
open access

RADIOACTIVE MATERIAL SHIPPING PACKAGINGS AND METAL TO METAL SEALS FOUND IN THE CLOSURES OF CONTAINMENT VESSELS INCORPORATING CONE SEAL CLOSURES

Description: The containment vessels for the Model 9975 radioactive material shipping packaging employ a cone-seal closure. The possibility of a metal-to-metal seal forming between the mating conical surfaces, independent of the elastomer seals, has been raised. It was postulated that such an occurrence would compromise the containment vessel hydrostatic and leakage tests. The possibility of formation of such a seal has been investigated by testing and by structural and statistical analyses. The results of … more
Date: June 6, 2007
Creator: Loftin, B; Glenn Abramczyk, G & Allen Smith, A
Item Type: Refine your search to only Article
open access

HWMA/RCRA Closure Plan for the Fluorinel Dissolution Process Makeup and Cooling and Heating Systems Voluntary Consent Order SITE-TANK-005 Action Plan Tank Systems INTEC-066, INTEC-067, INTEC-068, and INTEC-072

Description: This Hazardous Waste Management Act/Resource Conservation and Recovery Act closure plan for the fluorinel dissolution process makeup and cooling and heating systems located in the Fluorinel Dissolution Process and Fuel Storage Facility (CPP-666), Idaho Nuclear Technology and Engineering Center, Idaho National Laboratory Site, was developed to meet milestones established under the Voluntary Consent Order. The systems to be closed include waste piping associated with the fluorinel dissolution pro… more
Date: May 1, 2007
Creator: Davis, M.E.
Item Type: Refine your search to only Report
open access

FermiGrid

Description: As one of the founding members of the Open Science Grid Consortium (OSG), Fermilab enables coherent access to its production resources through the Grid infrastructure system called FermiGrid. This system successfully provides for centrally managed grid services, opportunistic resource access, development of OSG Interfaces for Fermilab, and an interface to the Fermilab dCache system. FermiGrid supports virtual organizations (VOs) including high energy physics experiments (USCMS, MINOS, D0, CDF, … more
Date: May 1, 2007
Creator: Yocum, D.R.; Berman, E.; Canal, P.; Chadwick, K.; Hesselroth, T.; Garzoglio, G. et al.
Item Type: Refine your search to only Article
open access

Development of an Accelerated Weathering Protocol using Weatherometers for Reliability Study of Mini-Modules and Encapsulation Materials

Description: This paper describes the needs, reasoning, approaches, and technical details to establish a practical accelerated weathering test (AWT) protocol for indoor testing of the photothermal stability of encapsulation materials and encapsulated solar cells and minimodules.
Date: January 1, 2000
Creator: Pern, F. J.
Item Type: Refine your search to only Article
open access

Carbon Sequestration on Surface Mine Lands

Description: Since the implementation of the federal Surface Mining Control and Reclamation Act of 1977 (SMCRA) in May of 1978, many opportunities have been lost for the reforestation of surface mines in the eastern United States. Research has shown that excessive compaction of spoil material in the backfilling and grading process is the biggest impediment to the establishment of productive forests as a post-mining land use (Ashby, 1998, Burger et al., 1994, Graves et al., 2000). Stability of mine sites was… more
Date: March 31, 2006
Creator: Graves, Donald; Barton, Christopher; Sweigard, Richard; Warner, Richard & Agouridis, Carmen
Item Type: Refine your search to only Report
open access

INL Green Building Strategy

Description: Green buildings, also known as sustainable buildings, resource efficient buildings, and high performance buildings, are structures that minimize the impact on the environment by using less energy and water, reducing solid waste and pollutants, and limiting the depletion of natural resources. As Idaho National Laboratory (INL) becomes the nation’s premier nuclear energy research laboratory, the physical infrastructure will be established to help accomplish the mission. This infrastructure, parti… more
Date: May 1, 2005
Creator: Dalton, Jennifer
Item Type: Refine your search to only Report
open access

AN OVERVIEW OF CESIUM-137 CONTAMINATION IN A SOUTHEASTERN SWAMP ENVIRONMENT

Description: In the early 1960s, an area of privately owned swamp adjacent to the Savannah River Site (SRS) was contaminated by site operations. Studies conducted in 1974 estimated that approximately 925 GBq of {sup 137}Cs and 37 GBq of {sup 60}Co were deposited in the swamp. Subsequently, a series of surveys was initiated to characterize the contaminated environment. These surveys--composed of 52 monitoring locations--allow for continued monitoring at a consistent set of locations. Initial survey results i… more
Date: April 4, 2007
Creator: Fledderman, P; Tim Jannik, T & Michael Paller, M
Item Type: Refine your search to only Article
open access

Very High Pressure Single Pulse Shock Tube Studies of Aromatic Species

Description: The principal focus of this research program is aimed at understanding the oxidation and pyrolysis chemistry of primary aromatic molecules and radicals with the goal of developing a comprehensive kinetic model at conditions that are relevant to practical combustion devices. A very high pressure single pulse shock tube is used to obtain experimental data over a wide pressure range in the high pressure regime, 5-1000 bars, at pre-flame temperatures for fuel pyrolysis and oxidation over a broad sp… more
Date: November 28, 2006
Creator: Brezinsky, K.
Item Type: Refine your search to only Report
open access

Database Applications to Integrate Beam Line Optics Changes with the Engineering Databases

Description: The LCLS project databases provide key nomenclature information while integrating many engineering and physics processes in the building of an accelerator. Starting with the elements existing in the beam line optics files, the engineers add non-beam-line elements, and controls engineers assign ''Formal Device Names'' to these elements. Inventory, power supplies, racks, crates and cable plants are databases that are being integrated into the project database. This approach replaces individual sp… more
Date: July 6, 2007
Creator: Chan, A.; Bellomo, P.; Crane, G. R.; Emma, P.; Grunhaus, E.; Luchini, K. et al.
Item Type: Refine your search to only Article
open access

Steam Generator Component Model in a Combined Cycle of Power Conversion Unit for Very High Temperature Gas-Cooled Reactor

Description: The Department of Energy and the Idaho National Laboratory are developing a Next Generation Nuclear Plant (NGNP), Very High Temperature Gas-Cooled Reactor (VHTR) to serve as a demonstration of state-of-the-art nuclear technology. The purpose of the demonstration is two fold 1) efficient low cost energy generation and 2) hydrogen production. Although a next generation plant could be developed as a single-purpose facility, early designs are expected to be dual-purpose. While hydrogen production a… more
Date: June 1, 2007
Creator: Oh, Chang H; Han, James; Barner, Robert & Sherman, Steven R
Item Type: Refine your search to only Article
open access

Simulating Electron Clouds in High-Current Ion Accelerators with Solenoid Focusing

Description: Contamination from electrons is a concern for the solenoid-focused ion accelerators being developed for experiments in high-energy-density physics (HEDP). These electrons are produced directly by beam ions hitting lattice elements and intercepting diagnostics, or indirectly by ionization of desorbed neutral gas, and they are believed responsible for time dependence of the beam radius, emittance, and focal distance seen on the Solenoid Transport Experiment (STX) at Lawrence Berkeley National Lab… more
Date: August 15, 2006
Creator: Sharp, W.; Grote, D.; Cohen, R.; Friedman, A.; Vay, J.; Seidl, P. et al.
Item Type: Refine your search to only Article
open access

Selective NOx Recirculation for Stationary Lean-Burn Natural Gas Engines

Description: Nitric oxide (NO) and nitrogen dioxide (NO2) generated by internal combustion (IC) engines are implicated in adverse environmental and health effects. Even though lean-burn natural gas engines have traditionally emitted lower oxides of nitrogen (NOx) emissions compared to their diesel counterparts, natural gas engines are being further challenged to reduce NOx emissions to 0.1 g/bhp-hr. The Selective NOx Recirculation (SNR) approach for NOx reduction involves cooling the engine exhaust gas and … more
Date: December 31, 2006
Creator: Clark, Nigel N.
Item Type: Refine your search to only Report
open access

Key Differences in the Fabrication, Irradiation, and Safety Testing of U.S. and German TRISO-coated Particle Fuel and Their Implications on Fuel Performance

Description: High temperature gas reactor technology is achieving a renaissance around the world. This technology relies on high quality production and performance of coated particle fuel. Historically, the irradiation performance of TRISO-coated gas reactor particle fuel in Germany has been superior to that in the United States. German fuel generally displayed in-pile gas release values that were three orders of magnitude lower than U.S. fuel. Thus, we have critically examined the TRISO-coated fuel fabrica… more
Date: June 1, 2002
Creator: Petti, David Andrew; Maki, John Thomas; Buongiorno, Jacopo & Hobbins, Richard Redfield
Item Type: Refine your search to only Report
open access

Measurement of z0 gamma production in ppbar collisions at s**(1/2) = 1.96 TeV

Description: The cross-section of p{bar p} {yields} Z{sup 0}{gamma} + X production at {radical}s = 1.96 TeV using the CDF II detector at the Fermilab Tevatron is measured using 202 pb{sup -1} of data from March 2002 to September 2003, collected with high P{sub T} lepton triggers. The number of events observed and their kinematic distributions are compared to the NLO Standard Model prediction in both the Z{sup 0} {yields} e{sup +}e{sup -} and Z{sup 0} {yields} {mu}{sup +}{mu}{sup -} channels. For a minimum l… more
Date: March 1, 2005
Creator: Hayward, Helen Sarah
Item Type: Refine your search to only Thesis or Dissertation
open access

Final Report: 17th international Symposium on Plant Lipids

Description: This meeting covered several emerging areas in the plant lipid field such as the biosynthesis of cuticle components, interorganelle lipid trafficking, the regulation of lipid homeostasis, and the utilization of algal models. Stimulating new insights were provided not only based on research reports based on plant models, but also due to several excellent talks by experts from the yeast field.
Date: March 7, 2007
Creator: Benning, Christoph
Item Type: Refine your search to only Text
open access

Development and utilization of composite honeycomb and solid laminate reference standards for aircraft inspections.

Description: The FAA's Airworthiness Assurance NDI Validation Center, in conjunction with the Commercial Aircraft Composite Repair Committee, developed a set of composite reference standards to be used in NDT equipment calibration for accomplishment of damage assessment and post-repair inspection of all commercial aircraft composites. In this program, a series of NDI tests on a matrix of composite aircraft structures and prototype reference standards were completed in order to minimize the number of standar… more
Date: June 1, 2004
Creator: Roach, Dennis Patrick & Rackow, Kirk A.
Item Type: Refine your search to only Report
open access

Containment of uranium in the proposed Egyptian geologic repository for radioactive waste using hydroxyapatite.

Description: Currently, the Egyptian Atomic Energy Authority is designing a shallow-land disposal facility for low-level radioactive waste. To insure containment and prevent migration of radionuclides from the site, the use of a reactive backfill material is being considered. One material under consideration is hydroxyapatite, Ca{sub 10}(PO{sub 4}){sub 6}(OH){sub 2}, which has a high affinity for the sorption of many radionuclides. Hydroxyapatite has many properties that make it an ideal material for use as… more
Date: April 1, 2004
Creator: Moore, Robert Charles; Hasan, Ahmed Ali Mohamed; Headley, Thomas Jeffrey; Sanchez, Charles Anthony (University of Arizona, Yuma, AZ); Zhao, Hongting; Salas, Fred Manuel et al.
Item Type: Refine your search to only Report
open access

Conversion of Input Data between KENO and MCNP File Formats for Computer Criticality Assessments

Description: KENO is a Monte Carlo criticality code that is maintained by Oak Ridge National Laboratory (ORNL). KENO is included in the SCALE (Standardized Computer Analysis for Licensing Evaluation) package. KENO is often used because it was specifically designed for criticality calculations. Because KENO has convenient geometry input, including the treatment of lattice arrays of materials, it is frequently used for production calculations. Monte Carlo N-Particle (MCNP) is a Monte Carlo transport code main… more
Date: November 30, 2006
Creator: Schwarz, Randolph A.; Carter, Leland L. & L., Schwarz Alysia
Item Type: Refine your search to only Report
open access

High-resolution adaptive optics scanning laser ophthalmoscope with dual deformable mirrors for large aberration correction

Description: Scanning laser ophthalmoscopes with adaptive optics (AOSLO) have been shown previously to provide a noninvasive, cellular-scale view of the living human retina. However, the clinical utility of these systems has been limited by the available deformable mirror technology. In this paper, we demonstrate that the use of dual deformable mirrors can effectively compensate large aberrations in the human retina, making the AOSLO system a viable, non-invasive, high-resolution imaging tool for clinical d… more
Date: January 25, 2007
Creator: Chen, D.; Jones, S. M.; Silva, D. A. & Olivier, S. S.
Item Type: Refine your search to only Article
open access

AFCI Transmutation Fuel Processes and By-Products Planning: Interim Report

Description: The goals of the Advanced Fuel Cycle Initiative (AFCI) Program are to reduce high-level waste volume, reduce long-lived and radiotoxic elements, and reclaim valuable energy content of spent nuclear fuel. The AFCI chartered the Fuel Development Working Group (FDWG) to develop advanced fuels in support of the AFCI goals. The FDWG organized a phased strategy of fuel development that is designed to match the needs of the AFCI program: Phase 1 - High-burnup fuels for light-water reactors (LWRs) and … more
Date: September 1, 2005
Creator: Shaber, Eric L.
Item Type: Refine your search to only Report
open access

Determination of the Form Factors for the Decay B0 to D*- l+ nu_l and of the CKM Matrix Element |Vcb|

Description: We present a combined measurement of the Cabibbo-Kobayashi-Maskawa matrix element |V{sub cb}| and of the parameters {rho}{sup 2}, R{sub 1}(1), and R{sub 2}(1), which fully characterize the form factors for the B{sup 0} {yields} D*-{ell}+?{sub {ell}} decay in the framework of HQET. The results, based on a selected sample of about 52,800 B{sup 0} {yields} D*-{ell}+?{sub {ell}} decays, recorded by the BABAR detector, are {rho}{sup 2} = 1.156 {+-} 0.094 {+-} 0.028, R{sub 1}(1) = 1.329{+-}0.131{+-}0… more
Date: June 6, 2007
Creator: Aubert, B.
Item Type: Refine your search to only Article
open access

Control of Surface Functional Groups on Pertechntate Sorption on Activated Carbon

Description: {sup 99}Tc is highly soluble and poorly adsorbed by natural materials under oxidizing conditions, thus being of particular concern for radioactive waste disposal. Activated carbon can potentially be used as an adsorbent for removing Tc from aqueous solutions. We have tested six commercial activated carbon materials for their capabilities for sorption of pertechnetate (TcO{sub 4}{sup -}). The tested materials can be grouped into two distinct types: Type I materials have high sorption capabilitie… more
Date: July 5, 2006
Creator: Wang, Y.; Gao, H.; Yeredla, R.; Xu, H.; Abrecht, M. & Stasio, G.D.
Item Type: Refine your search to only Article
Back to Top of Screen