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447
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204
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111
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2,310 Matching Results
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Livermore Computer Network Simulation Program
None
Date:
January 12, 2012
Creator:
Barnes, P. D.; Brase, J. M.; Canales, T. W.; Damante, M. M.; Horsley, M. A.; Jefferson, D. R. et al.
Object Type:
Article
System:
The UNT Digital Library
Data Quality Objectives Supporting Radiological Air Emissions Monitoring for the PNNL Site
Pacific Northwest National Laboratory (PNNL) is in the process of developing a radiological air monitoring program for the PNNL Site that is distinct from that of the nearby Hanford Site. The original DQO (PNNL-19427) considered radiological emissions at the PNNL Site from Physical Sciences Facility (PSF) major emissions units. This first revision considers PNNL Site changes subsequent to the implementation of the original DQO. A team was established to determine how the PNNL Site changes would continue to meet federal regulations and address guidelines developed to monitor air emissions and estimate offsite impacts of radioactive material operations. The result is an updated program to monitor the impact to the public from the PNNL Site. The team used the emission unit operation parameters and local meteorological data as well as information from the PSF Potential-to-Emit documentation and Notices of Construction submitted to the Washington State Department of Health (WDOH). The locations where environmental monitoring stations would most successfully characterize the maximum offsite impacts of PNNL Site emissions from the three PSF buildings with major emission units were determined from these data. Three monitoring station locations were determined during the original revision of this document. This first revision considers expanded Department of …
Date:
November 12, 2012
Creator:
Barnett, J. M.; Meier, Kirsten M.; Snyder, Sandra F.; Fritz, Brad G.; Poston, Theodore M. & Antonio, Ernest J.
Object Type:
Report
System:
The UNT Digital Library
Precision Equation-of-State Measurements on NIF ablator materials from 1 to 12 Mbar Using Laser-Driven Shock Waves
None
Date:
October 12, 2011
Creator:
Barrios, M. A.; Boehly, T. R.; Hicks, D. G.; Fratanduono, D. E.; Eggert, J. H.; Collins, G. et al.
Object Type:
Article
System:
The UNT Digital Library
Site Environmental Report for 2011, Volumes 1& 2
The Site Environmental Report for 2011 summarizes Berkeley Lab’s environmental management performance, presents environmental monitoring results, and describes significant programs for calendar year (CY) 2011. Throughout this report, “Berkeley Lab” or “LBNL” refers both to (1) the multiprogram scientific facility the UC manages and operates on the 202-acre university-owned site located in the hills above the UC Berkeley campus, and the site itself, and (2) the UC as managing and operating contractor for Ernest Orlando Lawrence Berkeley National Laboratory. The report is separated into two volumes. Volume I is organized into an executive summary followed by six chapters that include an overview of LBNL, a discussion of its Environmental Management System (EMS), the status of environmental programs, summarized results from surveillance and monitoring activities, and quality assurance (QA) measures. Volume II contains individual data results from surveillance and monitoring activities.
Date:
September 12, 2012
Creator:
Baskin, David; Bauters, Tim; Borglin, Ned; Fox, Robert; Horst, Blair; Jelinski, John et al.
Object Type:
Report
System:
The UNT Digital Library
New Measurement of the K+- \to Pi+-Mu+Mu- Decay
None
Date:
June 12, 2013
Creator:
Batley, J. R.; Kalmus, G.; Lazzeroni, C.; Munday, D. J.; Slater, M. W.; Wotton, S. A. et al.
Object Type:
Article
System:
The UNT Digital Library
2009 Release of the Evaluated Nuclear Data Library (ENDL2009)
None
Date:
August 12, 2010
Creator:
Beck, B.; Brown, D. A.; Descalle, M. A.; Hagmann, C.; Hoffman, R.; Ormand, E. et al.
Object Type:
Report
System:
The UNT Digital Library
Farm and Food Support Under USDA’s Section 32 Program
This report provides information about the Farm and Food Support Under USDA’s Section 32 Program which is funded by a permanent appropriation of 30% of previous year' s custom receipt, less custom transfers.
Date:
January 12, 2010
Creator:
Becker, Geoffrey S. & Ho, Melissa D.
Object Type:
Report
System:
The UNT Digital Library
Recent development on beam-based alignment in RHIC
N/A
Date:
May 12, 2013
Creator:
Beebe-Wang, J. & Ziegler, J. M.
Object Type:
Article
System:
The UNT Digital Library
Waste Treatment Plant Support Program: Summaries of Reports Produced During Fiscal Years 1999-2010
The Waste Treatment Plant (WTP) being built on the U.S. Department of Energy (DOE) Hanford Site will be the largest chemical processing plant in the United States. Bechtel National Inc. (BNI) is the designer and constructor for the WTP. The Pacific Northwest National Laboratory (PNNL) has provided significant research and testing support to the WTP. This report provides a summary of reports developed initially under PNNL’s “1831” use agreement and later PNNL’s “1830” prime contract with DOE in support of the WTP. In March 2001, PNNL under its “1831” use agreement entered into a contract with BNI to support their research and testing activities. However, PNNL support to the WTP predates BNI involvement. Prior to March 2001, PNNL supported British Nuclear Fuels Ltd. in its role as overall designer and constructor. In February 2007, execution of PNNL’s support to the WTP was moved under its “1830” prime contract with DOE. Documents numbered “PNWD-XXXX” were issued under PNNL’s “1831” use agreement. Documents numbered “PNNL-XXXX” were issued under PNNL’s “1830” prime contract with DOE. The documents are sorted by fiscal year and categorized as follows: Characterization HLW (High Level Waste) Material Characterization Pretreatment Simulant Development Vitrification …
Date:
August 12, 2010
Creator:
Beeman, Gordon H.
Object Type:
Report
System:
The UNT Digital Library
Single-Sector Supersymmetry Breaking, Chirality, and Unification
Calculable single-sector models provide an elegant framework for generating the flavor textures via compositeness, breaking supersymmetry, and explaining the electroweak scale. Such models may be realized naturally in supersymmetric QCD with additional gauge singlets (SSQCD), though it remains challenging to construct models without a surfeit of light exotic states where the Standard Model index emerges naturally. We classify possible single-sector models based on Sp confining SSQCD according to their Standard Model index and number of composite messengers. This leads to simple, calculable models that spontaneously break supersymmetry, reproduce the fermion flavor hierarchy, and explain the Standard Model index dynamically with little or no additional matter. At low energies these theories realize a 'more minimal' soft spectrum with direct mediation and a gravitino LSP.
Date:
August 12, 2011
Creator:
Behbahani, Siavosh R.; /SLAC /Stanford U., Phys. Dept.; Craig, Nathaniel; /Stanford U., Phys. Dept. /Princeton, Inst. Advanced Study /Rutgers U., Piscataway; Torroba, Gonzalo & /SLAC /Stanford U., Phys. Dept.
Object Type:
Article
System:
The UNT Digital Library
Nearly Supersymmetric Dark Atoms
Theories of dark matter that support bound states are an intriguing possibility for the identity of the missing mass of the Universe. This article proposes a class of models of supersymmetric composite dark matter where the interactions with the Standard Model communicate supersymmetry breaking to the dark sector. In these models supersymmetry breaking can be treated as a perturbation on the spectrum of bound states. Using a general formalism, the spectrum with leading supersymmetry effects is computed without specifying the details of the binding dynamics. The interactions of the composite states with the Standard Model are computed and several benchmark models are described. General features of non-relativistic supersymmetric bound states are emphasized.
Date:
August 12, 2011
Creator:
Behbahani, Siavosh R.; Jankowiak, Martin; /SLAC /Stanford U., ITP; Rube, Tomas; /Stanford U., ITP; Wacker, Jay G. et al.
Object Type:
Article
System:
The UNT Digital Library
A Comprehensive Analysis of Uncertainties Affecting the Stellar Mass-Halo Mass Relation for 0<z<4
We conduct a comprehensive analysis of the relationship between central galaxies and their host dark matter halos, as characterized by the stellar mass - halo mass (SM-HM) relation, with rigorous consideration of uncertainties. Our analysis focuses on results from the abundance matching technique, which assumes that every dark matter halo or subhalo above a specific mass threshold hosts one galaxy. We provide a robust estimate of the SM-HM relation for 0 < z < 1 and discuss the quantitative effects of uncertainties in observed galaxy stellar mass functions (GSMFs) (including stellar mass estimates and counting uncertainties), halo mass functions (including cosmology and uncertainties from substructure), and the abundance matching technique used to link galaxies to halos (including scatter in this connection). Our analysis results in a robust estimate of the SM-HM relation and its evolution from z=0 to z=4. The shape and evolution are well constrained for z < 1. The largest uncertainties at these redshifts are due to stellar mass estimates (0.25 dex uncertainty in normalization); however, failure to account for scatter in stellar masses at fixed halo mass can lead to errors of similar magnitude in the SM-HM relation for central galaxies in massive halos. We also investigate …
Date:
May 12, 2010
Creator:
Behroozi, Peter S.; Conroy, Charlie & Wechsler, Risa H.
Object Type:
Article
System:
The UNT Digital Library
FY2010 Supplemental for Wars, Disaster Assistance, Haiti Relief, and Other Programs
This report discusses the $64 billion in requested supplemental appropriations for FY2010, which includes $2.8 billion for Haiti earthquake-related reconstruction and foreign aid and $243 million for activities related to the Deepwater Horizon oil spill and more.
Date:
May 12, 2010
Creator:
Belasco, Amy; Else, Daniel H.; Lindsay, Bruce R.; Margesson, Rhoda; Nakamura, Kennon H. & Taft-Morales, Maureen
Object Type:
Report
System:
The UNT Digital Library
FIELD-DEPLOYABLE SAMPLING TOOLS FOR SPENT NUCLEAR FUEL INTERROGATION IN LIQUID STORAGE
Methodology and field deployable tools (test kits) to analyze the chemical and microbiological condition of aqueous spent fuel storage basins and determine the oxide thickness on the spent fuel basin materials were developed to assess the corrosion potential of a basin. this assessment can then be used to determine the amount of time fuel has spent in a storage basin to ascertain if the operation of the reactor and storage basin is consistent with safeguard declarations or expectations and assist in evaluating general storage basin operations. The test kit was developed based on the identification of key physical, chemical and microbiological parameters identified using a review of the scientific and basin operations literature. The parameters were used to design bench scale test cells for additional corrosion analyses, and then tools were purchased to analyze the key parameters. The tools were used to characterize an active spent fuel basin, the Savannah River Site (SRS) L-Area basin. The sampling kit consisted of a total organic carbon analyzer, an YSI multiprobe, and a thickness probe. The tools were field tested to determine their ease of use, reliability, and determine the quality of data that each tool could provide. Characterization confirmed that the L …
Date:
September 12, 2012
Creator:
Berry, T.; Milliken, C.; Martinez-Rodriguez, M.; Hathcock, D. & Heitkamp, M.
Object Type:
Article
System:
The UNT Digital Library
Direct Imaging of the Coexistence of Ferromagnetism and Superconductivity at the LaA1O3/SrTiO3 Interface
LaAlO{sub 3} and SrTiO{sub 3} are insulating, nonmagnetic oxides, yet the interface between them exhibits a two-dimensional electron system with high electron mobility, superconductivity at low temperatures, and electric-field-tuned metal-insulator and superconductor-insulator phase transitions. Bulk magnetization and magnetoresistance measurements also suggest some form of magnetism depending on preparation conditions and suggest a tendency towards nanoscale electronic phase separation. Here we use local imaging of the magnetization and magnetic susceptibility to directly observe a landscape of ferromagnetism, paramagnetism, and superconductivity. We find submicron patches of ferromagnetism in a uniform background of paramagnetism, with a nonuniform, weak diamagnetic superconducting susceptibility at low temperature. These results demonstrate the existence of nanoscale phase separation as suggested by theoretical predictions based on nearly degenerate interface subbands associated with the Ti orbitals. The magnitude and temperature dependence of the paramagnetic response suggests that the vast majority of the electrons at the interface are localized, and do not contribute to transport measurements. In addition to the implications for magnetism, the existence of a 2D superconductor at an interface with highly broken inversion symmetry and a ferromagnetic landscape in the background suggests the potential for exotic superconducting phenomena.
Date:
August 12, 2011
Creator:
Bert, Julie
Object Type:
Article
System:
The UNT Digital Library
Paraxial WKB Method Applied to the Lower Hybrid Wave Propagation
The paraxial WKB (pWKB) approximation, also called beam tracing method, has been employed in order to study the propagation of lower hybrid (LH) waves in a tokamak plasma. Analogous to the well-know ray tracing method, this approach reduces Maxwell's equations to a set of ordinary differential equations, while, in addition, retains the effects of the finite beam cross-section, and, thus, the effects of diffraction. A new code, LHBEAM (Lower Hybrid BEAM tracing), is presented, which solves the pWKB equations in tokamak geometry for arbitrary launching conditions and for analytic and experimental plasma equilibria. In addition, LHBEAM includes linear electron Landau damping for the evaluation of the absorbed power density and the reconstruction of the wave electric field in both the physical and Fourier space. Illustrative LHBEAM calculations are presented along with a comparison with the ray tracing code GENRAY and the full wave solver TORIC-LH.
Date:
July 12, 2012
Creator:
Bertelli, N.; Poli, E.; Harvey, R.; Wright, J. C.; Bonoli, P. T.; Phillips, C. K. et al.
Object Type:
Report
System:
The UNT Digital Library
Director of National Intelligence Statutory Authorities: Status and Proposals
This report discusses the Director of National Intelligence (DNI) position created by the Intelligence Reform and Terrorism Prevention Act of 2004 (P.L. 108-458). It includes an overview of the authorities granted to the DNI by legislation in 2004 and later as well as the varying opinions of Congress regarding new DNI authorities, as well as related legislation from FY2010 through FY2012.
Date:
January 12, 2011
Creator:
Best, Richard A., Jr. & Cumming, Alfred
Object Type:
Report
System:
The UNT Digital Library
Evolution of the Meaning of "Waters of the United States" in the Clean Water Act
This report outlines how the Bipartisan Congressional Trade Priorities and Accountability Act of 2015 (BCTPAA) regulates the eligibility of covered trade agreements for expedited consideration, describes the operation of the statutory expedited procedures for considering implementing bills, and discusses how Congress may use the procedural mechanisms established by the act, as well as other pertinent rules of each chamber, to retain a substantial measure of control over legislation to implement covered trade agreements.
Date:
August 12, 2016
Creator:
Beth, Richard S.
Object Type:
Report
System:
The UNT Digital Library
Filibusters and Cloture in the Senate
None
Date:
March 12, 2010
Creator:
Beth, Richard S.; Heitshusen, Valerie & Palmer, Betsy
Object Type:
Report
System:
The UNT Digital Library
Compressible gas flow through micro-capillary fill-tubes on NIF targets- modeling and experiments
None
Date:
February 12, 2010
Creator:
Bhandarkar, S D; Parham, T G & Fair, J E
Object Type:
Article
System:
The UNT Digital Library
Tax Gap: Should the 3% Withholding Requirement on Payments to Contractors by Government Be Repealed?
This reports discusses tax gaps and withholding, and concerns and legislation regarding these issues in the 112th Congress.
Date:
September 12, 2011
Creator:
Bickley, James M.
Object Type:
Report
System:
The UNT Digital Library
Tax Gap: Should the 3% Withholding Requirement on Payments to Contractors by Government Be Repealed?
This brief discusses the Joint Committee on Taxation (JCT) report titled Options to Improve Tax Compliance and Reform Tax Expenditures. The JCT report identified many options, including several to increase withholding.
Date:
September 12, 2011
Creator:
Bickley, James M.
Object Type:
Report
System:
The UNT Digital Library
Saudi Arabia: Background and U.S. Relations
This report discusses the current state of the kingdom of Saudi Arabia, its relationship with the United States, and future initiatives to further develop U.S.-Saudi relations.
Date:
February 12, 2014
Creator:
Blanchard, Christopher M.
Object Type:
Report
System:
The UNT Digital Library
Possible U.S. Intervention in Syria: Issues for Congress
This report discusses reports of a mass casualty chemical weapons attack in the suburbs of Damascus and the possible punitive U.S. military action against the Asad regime.
Date:
September 12, 2013
Creator:
Blanchard, Christopher M. & Sharp, Jeremy M.
Object Type:
Report
System:
The UNT Digital Library