Search Results

open access

Commuter Rail: Information and Guidance Could Help Facilitate Commuter and Freight Rail Access Negotiations

Description: A letter report issued by the General Accounting Office with an abstract that begins "Commuter and freight rail services have the potential to play increasingly important roles in the nation's economy and transportation system as demand for these services increases. Because the cost of building new infrastructure can be costprohibitive, commuter rail agencies typically seek to use existing infrastructure--which is primarily owned by private freight railroads. Consequently, commuter rail agencie… more
Date: January 9, 2004
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

Alternative Transportation Fuels and Vehicles: Energy, Environment, and Development Issues

Description: This report reviews several issues relating to alternative fuels and vehicles, mainly to combat dependence on petroleum imports and reduce greenhouse gas emissions. The report discusses the advantages and drawbacks of various alternative fuels and vehicles, as well as related legislation.
Date: January 9, 2004
Creator: Yacobucci, Brent D.
Partner: UNT Libraries Government Documents Department
open access

Experimental and theoretical evaluation of density sensitive N VII, Ar XIV and Fe XXII line ratios

Description: The line ratios of the 2p-3d transitions in the B-like spectra Ar XIV and Fe XXII have been measured using the electron beam ion traps at Livermore. Radiative-collisional model calculations show these line ratios to be sensitive to the electron density in the ranges ne = 10{sup 10} to 10{sup 12} cm{sup -3} and ne = 10{sup 13} to 10{sup 15} cm{sup -3}, respectively. In our experiment, the electron beam density of about 10{sup 11} cm{sup -3} was varied by about a factor of 5. Our data show a dens… more
Date: January 9, 2004
Creator: Chen, H; Beiersdorfer, P; Heeter, L A; Liedahl, D A; Naranjo-Rivera, K L; Trabert, E et al.
Partner: UNT Libraries Government Documents Department
open access

M-theory and E10: Billiards, Branes, and Imaginary Roots

Description: Eleven dimensional supergravity compactified on $T^10$ admits classical solutions describing what is known as billiard cosmology - a dynamics expressible as an abstract (billiard) ball moving in the 10-dimensional root space of the infinite dimensional Lie algebra E10, occasionally bouncing off walls in that space. Unlike finite dimensional Lie algebras, E10 has negative and zero norm roots, in addition to the positive norm roots. The walls above are related to physical fluxes that, in turn, ar… more
Date: January 9, 2004
Creator: Brown, Jeffrey; Ganor, Ori J. & Helfgott, Craig
Partner: UNT Libraries Government Documents Department
open access

Short equational bases for ortholattices : proofs and countermodels.

Description: This document contains proofs and countermodels in support of the paper ''Short Equational Bases for Ortholattices'', by the same set of authors. In that paper, short single axioms for ortholattices, orthomodular lattices, and modular ortholattices are presented, all in terms of the Sheffer stroke. The ortholattice axiom is the shortest possible. Other equational bases in terms of the Sheffer stroke and in terms of join, meet, and complement are presented. Computers were used extensively to fin… more
Date: January 9, 2004
Creator: McCune, W.; Padmanabhan, R.; Rose, M. A. & Veroff, R.
Partner: UNT Libraries Government Documents Department
open access

A new precursor for the preparation of 6-[18F]-fluoro-L-m-tyrosine (FMT): Efficient synthesis and comparison of radiolabeling

Description: For the electrophilic preparation of 6-[18F]-Fluoro-L-m-tyrosine (FMT), a PET tracer for measuring changes in dopaminergic function in movement disorders, a novel precursor, N-(tert-butoxycarbonyl)-3-(tert-butoxycarbonyloxy)-6-trimethylstannnyl-L-phenylalanine ethyl ester, was synthesized in four steps and 26 percent yield starting from L-m-tyrosine. FMT produced by two methods at two institutions was comparable in decay corrected yield, 25-26 percent, and quality (chemical, enantiomeric, and r… more
Date: January 9, 2004
Creator: VanBrocklin, Henry F.; Blagoev, Milan; Hoepping, Alexander; O'Neil, James P.; Klose, Manuela; Schubiger, Pius A. et al.
Partner: UNT Libraries Government Documents Department
open access

Static leach tests with the EBR-II metallic waste form.

Description: A metallic waste form (MWF) will be used to immobilize contaminated cladding hulls recovered after electrometallurgical treatment of spent sodium-bonded nuclear fuel from the Experimental Breeder Reactor-II (EBR-II). Tests were conducted to determine if the high-level waste (HLW) glass degradation model developed for total system performance assessment (TSPA) calculations for the Yucca Mountain repository system can be used to represent the degradation of disposed MWF. Static tests were conduct… more
Date: January 9, 2004
Creator: Ebert, W. L.; Lewis, M. A.; Barber, T. L.; DiSanto, T. & Johnson, S. G.
Partner: UNT Libraries Government Documents Department
open access

Three dimensional interpretations of single-well electromagnetic data for geothermal applications

Description: An efficient 3-D electromagnetic (EM) inversion algorithm has been developed for geothermal applications and tested successfully using a set of single-hole EM logging data. The data was collected at an oil field undergoing CO{sub 2} injection in southern California using a single-hole EM tool, Geo-BILT, developed by Electromagnetic Instruments, Inc (EMI). The tool is equipped with a multi-component source, and multi-component receivers at different separations. The inversion result provides a r… more
Date: January 9, 2004
Creator: Tseng, Hung-Wen & Lee, Ki Ha
Partner: UNT Libraries Government Documents Department
open access

Characterization of Uranium Solids Precipitated with Aluminosilicates

Description: At the Savannah River Site (SRS), the High-Level Waste (HLW) Tank Farms store and process high-level liquid radioactive wastes from the Canyons and recycle water from the Defense Waste Processing Facility. The waste is concentrated using evaporators to minimize the volume of space required for HLW storage. Recently, the 2H Evaporator was shutdown due to the crystallization of sodium aluminosilicate (NAS) solids (such as cancrinite and sodalite) that contained close to 10 weight percent of eleme… more
Date: January 9, 2004
Creator: Duff, M. C.
Partner: UNT Libraries Government Documents Department
open access

Neutrino Factory Designs and R&D

Description: The development of a very intense muon source capable of producing a millimole of muons per year would enable a Neutrino Factory [1], and perhaps eventually a Muon Collider [2], to be built. In the last two years Neutrino Factory physics studies [3] have mapped out an exciting Neutrino Factory physics program. In addition, Neutrino Factory feasibility studies [4-6] have yielded designs that appear to be ''realistic'' provided the performance parameters for the critical components can be achieve… more
Date: January 9, 2004
Creator: Geer, Steve
Partner: UNT Libraries Government Documents Department
open access

D2 and CD4 Purity Effects on CD Ablators

Description: The question of how the isotopic purity of the feed gases D{sub 2} and CD{sub 4} used to make CD ablators at GA effects the extinction coefficient in the region of wavenumber 2900 cm{sup -1} ({lambda} = 3.45 {micro}m) is addressed below. The answer is at best incomplete; this is only an interim evaluation. What is clear is that using ultra-pure D{sub 2} is required to lower the ''CH'' impurity peak at 2900 cm{sup -1}. Perhaps using ultra-pure CD{sub 4} also helps, though the evidence for this i… more
Date: January 9, 2004
Creator: Cook, R C & Nikroo, A
Partner: UNT Libraries Government Documents Department
open access

“Boutique Fuels” and Reformulated Gasoline: Harmonization of Fuel Standards

Description: This report discusses how gasoline composition is regulated,explains various federal and state gasoline standards,presents some of the key issues with federal RFG program and some of the problems associated with the boutique fuels issue and the potential effects of harmonization.Finally discusses the bills in the 108th Congress related to boutique fuels,RFG and harmonization.
Date: January 9, 2004
Creator: Yacobucci, Brent D.
Partner: UNT Libraries Government Documents Department
open access

Clean Air Act Issues in the 108th Congress

Description: This report discusses the conference report on the energy bill which came to the house and senate floor for action the week of November 17, that contains several clean air act provisions. It also points out the most recent developments on clean air act issues.
Date: January 9, 2004
Creator: McCarthy, James E.
Partner: UNT Libraries Government Documents Department
open access

New Developments in Deformation Experiments at High Pressure

Description: Although the importance of rheological properties in controlling the dynamics and evolution of the whole mantle of Earth is well-recognized, experimental studies of rheological properties and deformation-induced microstructures have mostly been limited to low-pressure conditions. This is mainly a result of technical limitations in conducting quantitative rheological experiments under high-pressure conditions. A combination of factors is changing this situation. Increased resolution of compositi… more
Date: January 9, 2004
Creator: Durham, W. B.; Weidner, D. J.; Karato, S. & Wang, Y.
Partner: UNT Libraries Government Documents Department
open access

Prospects for Investigating Unusual Nuclear Reaction Environments Using the National Ignition Facility

Description: The standard capsule design and other laser plasma targets at the National Ignition Facility offer the possibility of generating and studying thermal rates for significant astrophysical fusion reactions such as {sup 3}He({sup 3}He,2p){alpha}, {sup 7}Be(p,{gamma}){sup 8}B, and {sup 15}N(p,{alpha}){sup 12}C. At present the ''S'' factors for these reactions are determined either by extrapolation from higher energy scattering data, or by underground laboratory, low event rate experiments such as at… more
Date: January 9, 2004
Creator: Libby, S. B.; Tabak, M.; Hoffman, R. D.; Stoyer, M. A.; Haan, S. W.; Hatchett, S. P. et al.
Partner: UNT Libraries Government Documents Department
open access

DOWNHOLE VIBRATION MONITORING & CONTROL SYSTEM

Description: The objective of this program is to develop a system to both monitor the vibration of a bottomhole assembly, and to adjust the properties of an active damper in response to these measured vibrations. Phase I of this program entails modeling and design of the necessary subsystems and design, manufacture and test of a full laboratory prototype. The project continues to advance, but is behind the revised (14-month) schedule. Tasks 1-3 (Modeling, Specification and Design) are all essentially comple… more
Date: January 9, 2004
Creator: Cobern, Martin E.
Partner: UNT Libraries Government Documents Department
open access

Social Security: The Windfall Benefit Provision

Description: This report discusses the windfall elimination provision, which reduces the Social Security benefits of workers who also have pension benefits from employment not covered by Social Security. Its purpose is to remove an advantage these workers would otherwise receive because of Social Security's benefit formula that favors workers with smaller amounts of Social Security-covered career earnings. Opponents contend that the provision is basically inaccurate and often unfair. In both the 107th and 1… more
Date: January 9, 2004
Creator: Haltzel, Laura
Partner: UNT Libraries Government Documents Department
open access

Bipartisan Campaign Reform Act of 2002: Summary and Comparison with Previous Law

Description: The Bipartisan Campaign Reform Act of 2002 was enacted on March 27, 2002 as P.L. 107-155. It passed the House on February 14, 2002, as H.R. 2356 (Shays- Meehan), by a 240-189 vote. Its companion measure, on which it was largely based, had initially been passed by the Senate in 2001 as S. 27 (McCain-Feingold). On March 20, 2002, however, the Senate approved the House-passed H.R. 2356 by a 60- 40 vote, thus avoiding a conference to reconcile differences between S. 27 and H.R. 2356. The two primar… more
Date: January 9, 2004
Creator: Cantor, Joseph E. & Whitaker, L. Paige
Partner: UNT Libraries Government Documents Department
Back to Top of Screen