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477 Matching Results
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Hydropower Licenses and Relicensing Conditions: Current Issues and Legislative Activity
This report provides an overview of the current issues and legislative activity of the hydro power licenses and re-licensing conditions.
Date:
January 9, 2004
Creator:
Powers, Kyna
Object Type:
Report
System:
The UNT Digital Library
M-theory and E10: Billiards, Branes, and Imaginary Roots
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, are related to positive norm roots (called real roots) of E10. We propose that zero and negative norm roots, called imaginary roots, are related to physical branes. Adding 'matter' to the billiard cosmology corresponds to adding potential terms associated to imaginary roots. The, as yet, mysterious relation between E10 and M-theory on $T^10$ can now be expanded as follows: real roots correspond to fluxes or instantons, and imaginary roots correspond to particles and branes (in the cases we checked). Interactions between fluxes and branes and between branes and branes are classified according to the inner product of the corresponding roots (again in the cases we checked). We conclude with a discussion of an effective Hamiltonian description that captures some features of M-theory on $T^10.$
Date:
January 9, 2004
Creator:
Brown, Jeffrey; Ganor, Ori J. & Helfgott, Craig
Object Type:
Article
System:
The UNT Digital Library
The Message, Volume 39, Number 10, January 2004
Newsletter of Congregation Beth Yeshurun in Houston, including news and events, upcoming services, member announcements, editorials, and other information of interest to congregants.
Date:
January 9, 2004
Creator:
Congregation Beth Yeshurun (Houston, Tex.)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Neutrino Factory Designs and R&D
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 achieved. Some of the key components will need a vigorous R&D program to meet the requirements. Neutrino Factory R&D activities in Europe [7], Japan [6,8], and the US [9] have resulted in three promising variants of the basic Neutrino Factory design. In the following the various Neutrino Factory schemes are briefly described. The main R&D issues and the ongoing R&D programs are summarized.
Date:
January 9, 2004
Creator:
Geer, Steve
Object Type:
Article
System:
The UNT Digital Library
New Developments in Deformation Experiments at High Pressure
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 composition and configuration of Earth's interior has created a greater demand for well-resolved laboratory measurement of the effects of pressure on the behavior of materials. Higher-strength materials have become readily available for containing high-pressure research devices, and new analytical capabilities--in particular very bright synchrotron X-ray sources--are now readily available to high-pressure researchers. One of the biggest issues in global geodynamics is the style of mantle convection and the nature of chemical differentiation associated with convectional mass transport. Although evidence for deep mantle circulation has recently been found through seismic tomography (e.g., van der Hilst et al. (1997)), complications in convection style have also been noted. They include (1) significant modifications of flow geometry across the mantle transition zone as seen from high resolution tomographic studies (Fukao et al. 1992; Masters et al. 2000; van der Hilst et al. …
Date:
January 9, 2004
Creator:
Durham, W. B.; Weidner, D. J.; Karato, S. & Wang, Y.
Object Type:
Article
System:
The UNT Digital Library
A new precursor for the preparation of 6-[18F]-fluoro-L-m-tyrosine (FMT): Efficient synthesis and comparison of radiolabeling
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 radiochemical purity and specific activity) as that obtained with the original N-trifluoroacetyl-3-acetyl-6-trimethylstannyl-L-m-tyrosine ethyl ester FMT precursor.
Date:
January 9, 2004
Creator:
VanBrocklin, Henry F.; Blagoev, Milan; Hoepping, Alexander; O'Neil, James P.; Klose, Manuela; Schubiger, Pius A. et al.
Object Type:
Article
System:
The UNT Digital Library
Oral History Interview with Irving Newton, January 9, 2004
The National Museum of the Pacific War presents an interview with Irving Newton. Newton joined the Army Air Forces in mid-1941. He completed school for weather forecasting. He served as the forecaster at Marshall Field, Fort Riley, Kansas. In 1943 he was transferred to Hickman Field in Hawaii, and later to Tarawa, Okinawa, the Philippines and Japan.
Date:
January 9, 2004
Creator:
Newton, Irving
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Irving Newton, January 9, 2004
The National Museum of the Pacific War presents an interview with Irving Newton. Newton joined the Army Air Forces in mid-1941. He completed school for weather forecasting. He served as the forecaster at Marshall Field, Fort Riley, Kansas. In 1943 he was transferred to Hickman Field in Hawaii, and later to Tarawa, Okinawa, the Philippines and Japan.
Date:
January 9, 2004
Creator:
Newton, Irving
Object Type:
Text
System:
The Portal to Texas History
Perry Daily Journal (Perry, Okla.), Vol. 111, No. 6, Ed. 1 Friday, January 9, 2004
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 9, 2004
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Prospects for Investigating Unusual Nuclear Reaction Environments Using the National Ignition Facility
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 LUNA on un-ionized atoms with concomitantly large screening corrections. The ability to directly generate astrophysical fusion reactions in thermonuclear plasmas will be complemented by new, ab initio, ''no frozen core'' detailed shell model predictions for such light ion reactions. In addition, the expected fluence of neutrons from the main D + T {yields} {alpha} + n burn reaction, is high enough to drive 10-20% of seeded spectator nuclei into excited states via (n,n') reactions. Furthermore, the {approx}2% ''minority'' D + D {yields} {sup 3}He + n and n + D {yields} n' + D' scattering can drive reactions pertinent to the r, s, and p process nucleosynthesis of heavy elements, including branches that pass through excited states with t > 10 ps, that can be studied using particle spectroscopy and radiochemistry. …
Date:
January 9, 2004
Creator:
Libby, S. B.; Tabak, M.; Hoffman, R. D.; Stoyer, M. A.; Haan, S. W.; Hatchett, S. P. et al.
Object Type:
Article
System:
The UNT Digital Library
Qtexas, Volume 4, Issue 17, January 9, 2004
Weekly magazine containing news, information about events, interviews, and articles of interest to the gay and lesbian community in Texas, with advertising.
Date:
January 9, 2004
Creator:
Qtexas Publishing, LLC
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Reinforcement of Aluminum Castings with Dissimilar Metals
None
Date:
January 9, 2004
Creator:
Han, Q.; More, K. L.; Myers, M. R.; Warwick, M. J. & Chen, Y. C.
Object Type:
Report
System:
The UNT Digital Library
Safe Harbor for Service Providers Under the Digital Millennium Copyright Act
None
Date:
January 9, 2004
Creator:
Yeh, Brian T. & Jeweler, Robin
Object Type:
Report
System:
The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 88, No. 103, Ed. 1 Friday, January 9, 2004
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 9, 2004
Creator:
Broaddus, Matthew B.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Sealy News (Sealy, Tex.), Vol. 117, No. 3, Ed. 1 Friday, January 9, 2004
Semiweekly newspaper from Sealy, Texas that includes local, state, and national news along with advertising.
Date:
January 9, 2004
Creator:
Griffin, Joanie & Horecka, Bobby
Object Type:
Newspaper
System:
The Portal to Texas History
Short equational bases for ortholattices : proofs and countermodels.
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 find candidates, reject candidates, and search for proofs that candidates are single axioms.
Date:
January 9, 2004
Creator:
McCune, W.; Padmanabhan, R.; Rose, M. A. & Veroff, R.
Object Type:
Report
System:
The UNT Digital Library
Social Security: The Government Pension Offset
None
Date:
January 9, 2004
Creator:
Haltzel, Laura
Object Type:
Report
System:
The UNT Digital Library
Social Security: The Windfall Benefit Provision
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 108th Congresses, five bills have been introduced that would modify or repeal the provision.
Date:
January 9, 2004
Creator:
Haltzel, Laura
Object Type:
Report
System:
The UNT Digital Library
Static leach tests with the EBR-II metallic waste form.
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 conducted at 50, 70, and 90 C with monolithic samples of MWF in pH buffer solutions spiked with NaCl at a MWF surface-to-solution volume ratio of about 200 m{sup -1}. Test specimens were prepared from a surrogate MWF ingot containing about 10 mass% U. Solutions were exchanged after 14, 28, and 70 days. The cumulative amount of U released into solution through 70 days was used to calculate the MWF degradation rate for each test condition. The rate was independent of temperature. The rate was highest in acidic solutions, lowest in neutral solutions, and intermediate in alkaline solutions. The uranium release rate from a breached canister, which is the product of the MWF degradation rate and the surface area of two MWF ingots in a canister, was compared with the release rate …
Date:
January 9, 2004
Creator:
Ebert, W. L.; Lewis, M. A.; Barber, T. L.; DiSanto, T. & Johnson, S. G.
Object Type:
Report
System:
The UNT Digital Library
Texas Register, Volume 29, Number 2, Pages 249-430, January 9, 2004
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
January 9, 2004
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Three dimensional interpretations of single-well electromagnetic data for geothermal applications
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 reasonable electrical conductivity image to a distance of 10 m from the well, and illustrates several zones with lateral conductivity variations that could not be resolved with traditional induction logging tools. The successful case study demonstrates potential applications of the tool and software for characterizing fracture systems in geothermal reservoirs.
Date:
January 9, 2004
Creator:
Tseng, Hung-Wen & Lee, Ki Ha
Object Type:
Article
System:
The UNT Digital Library