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A 14.6 Arcsecond Quasar Lens Split by a Massive Dark Matter Halo

Description: Gravitational lensing is a powerful tool to study the distribution of dark matter in the universe. The cold dark matter model of structure formation predicts the existence of quasars gravitationally lensed by concentrations of dark matter so massive that the quasar images would be split by over 7 inches. However, numerous searches for large-separation lensed quasars have been unsuccessful; all of the roughly 70 lensed quasars known to date, such as Q0957+561, have smaller splittings, and can be… more
Date: December 4, 2003
Creator: Inada, N.; Oguri, M.; Pindor, B.; Hennawi, J.; Chiu, K.; Zheng, W. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of a Novel Non-Consumable Anode for Electrowinning Primary Aluminum

Description: The principal goal of the project was to determine through theoretical considerations and from chemical and electrochemical laboratory studies the technical and economic feasibility for the substitution and retrofitting of an SOFC-type anode for today's carbon anode in a cell for electrowinning primary Al. However, solubility measurements showed that no value of cryolite ratio can exist where the solubilities of the solid electrolyte components (zirconia and especially yttria) would be small re… more
Date: December 4, 2003
Creator: Rapp, Robert A. & Zhang, Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of the Use of Pore Formers on Performance of an Anode supported Solid Oxide Fuel Cell

Description: The effects of amount of pore former used to produce porosity in the anode of an anode supported planar solid oxide fuel cell were examined. The pore forming material utilized was rice starch. The reduction rate of the anode material was measured by Thermogravimetric Analysis (TGA) to qualitatively characterize the gas transport within the porous anode materials. Fuel cells with varying amounts of porosity produced by using rice starch as a pore former were tested. The performance of the fuel c… more
Date: December 4, 2003
Creator: Haslam, J. J.; Pham, A.; Chung, B. W.; DiCarlo, J. F. & Glass, R. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Evaporative Concentration of 100x J13 Ground Water at 60% Relative Humidity and 90C

Description: In these experiments we studied the behavior of a synthetic concentrated J13 solution as it comes in contact with a Ni-Cr-Mo-alloy selected for waste canisters in the designated high-level nuclear-waste repository at Yucca Mountain, Nevada. Concentrated synthetic J13 solution was allowed to drip slowly onto heated test specimens (90 C, 60% relative humidity) where the water moved down the surface of the specimens, evaporated and minerals precipitated. Mineral separation or zoning along the evap… more
Date: December 4, 2003
Creator: Staggs, K; Maureen Alai,; Hailey, P; Carroll, S A; Sutton, M & Nguyen, Q A
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Field Analysis of Propellant Stabilizers and their Daughter Products in any Propellant Formulation by Thin-Layer Chromatography Year End Report 2003

Description: Lawrence Livermore National Laboratory's Forensic Science Center (FSC) has successfully resolved a variety of concerns related to propellant stabilizer analysis by thin-layer chromatography. The technology is now ready to proceed to validation and the related issues associated with deployment, both CONUS and OCONUS. The goal of this project is to develop a completely self-contained field-portable system to quantitatively analyze propellants for their stabilizer content. Lawrence Livermore Natio… more
Date: December 4, 2003
Creator: Whipple, R
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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First results on neutrinoless double beta decay of Te-130 with the calorimetric cuoricino experiment

Description: The first results are reported on the limit for neutrinoless double decay of {sup 130}Te obtained with the new bolometric experiment CUORICINO. The set-up consists of 44 cubic crystals of natural TeO{sub 2}, 5 cm on the side and 18 crystals of 3 x 3 x 6 cm{sup 3}. Four of these latter crystals are made with isotopically enriched materials: two in {sup 128}Te and two others in {sup 130}Te . With a sensitive mass of {approx}40 kg, our array is by far the most massive running cryogenic detector to… more
Date: December 4, 2003
Creator: Arnaboldi, C.; Artusa, D. R.; Avignone, F. T.; Balata, M.; Bandac, I.; Barucci, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Head Start: Better Data and Processes Needed to Monitor Underenrollment

Description: A letter report issued by the General Accounting Office with an abstract that begins "Head Start, created in 1965, is designed to prepare low-income preschool children for school by providing a comprehensive set of early child development services primarily through communitybased organizations. Over the last decade there have been a number of changes in Head Start's operating environment, including a decrease in the number of poor children; an increase in the number, size, and scope of other fe… more
Date: December 4, 2003
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The House's Corrections Calendar

Description: This report discusses the establishment of the "Corrections Day," a concept credited to Michigan Governor John Englerwhich, which is a procedure for repealing "the dumbest things the federal government is currently doing."
Date: December 4, 2003
Creator: Oleszek, Walter J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Interferometric Studies of Laser-Created Plasmas Using Compact Soft X-Ray Lasers

Description: We summarize results of several successful dense plasma diagnostics experiments realized by combining two different kinds of table-top soft x-ray lasers with an amplitude division interferometer based on diffraction grating beam splitters. In the first set of experiments this robust high throughput diffraction grating interferometer (DGI) was used with a 46.9 nm portable capillary discharge laser to study the dynamics of line focus and point focus laser-created plasmas. The measured electron de… more
Date: December 4, 2003
Creator: Dunn, J.; Nilsen, J.; Moon, S.; Keenan, R.; Jankowska, E.; Maconi, M. C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Lithium Pellet Injector Development for NSTX

Description: A pellet injector suitable for the injection of lithium and other low-Z pellets of varying mass into plasmas at precise velocities from 5 to 500 m/s is being developed for use on NSTX (National Spherical Torus Experiment). The ability to inject low-Z impurities will significantly expand NSTX experimental capability for a broad range of diagnostic and operational applications. The architecture employs a pellet-carrying cartridge propelled through a guide tube by deuterium gas. Abrupt deceleratio… more
Date: December 4, 2003
Creator: Gettelfinger, G.; Dong, J.; Gernhardt, R.; Kugel, H.; Sichta, P. & Timberlake, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MICE -- Absorber and focus coil safety working group design document: Preliminary design and assessments

Description: A Neutrino Factory based on a muon storage ring is the ultimate tool for studies of neutrino oscillations, including possibly the discovery of leptonic CP violation. it is also the first step toward a muon collider. To develop a stored-muon-beam facility to serve as a Neutrino Factory, it is necessary to ''cool'' a muon beam (decrease its phase-space volume). The short lifetime of the muon, 2.2 {micro}s at rest, eliminates all currently demonstrated cooling techniques and requires that a new, h… more
Date: December 4, 2003
Creator: Barr, Giles; Baynham, Elwyn; Black, Edgar; Bradshaw, Tom; Cummings, Mary Anne; Green, Michael A. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Oral History Interview with Randell Fields, December 4, 2003

Description: Interview with Randell Fields. The interview includes Fields' personal experiences about attending the Texas International Pop Festival in Lewisville, Texas, early youth in rural Texas, and transferring high schools. Fields also talks about attendance at the "Big D Jamboree," the effects of his parent's divorce and influence of his young stepmother's interest in current music, student challenges to authority at North Texas Mesquite High School, rock 'n roll music of the Sixties, the influence o… more
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: December 4, 2003
Creator: Tittle, Dennis & Fields, Randell
Item Type: Refine your search to only Book
Partner: UNT Oral History Program
open access

Overview of the Medicare Prescription Drug and Reform Conference Agreement, H.R. 1

Description: This report details the changes to Medicare that involves paying a monthly premium for a prescription drug benefit. It also includes either prices increases due to where one lives, or to reduce the amount offered in particular areas. Updated on December 4, 2003.
Date: December 4, 2003
Creator: O'Sullivan, Jennifer; Chaikind, Hinda; Tilson, Sibyl; Boulanger, Jennifer & Morgan, Paulette C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sensitivity of Global Modeling Initiative CTM predictions of Antarctic ozone recovery to GCM and DAS generated meteorological fields

Description: We use the Global Modeling Initiative chemistry and transport model to simulate the evolution of stratospheric ozone between 1995 and 2030, using boundary conditions consistent with the recent World Meteorological Organization ozone assessment. We compare the Antarctic ozone recovery predictions of two simulations, one driven by meteorological data from a general circulation model (GCM), the other using the output of a data assimilation system (DAS), to examine the sensitivity of Antarctic ozon… more
Date: December 4, 2003
Creator: Rotman, D & Bergmann, D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Space Acquisitions: Committing Prematurely to the Transformational Satellite Program Elevates Risks for Poor Cost, Schedule, and Performance Outcomes

Description: Correspondence issued by the General Accounting Office with an abstract that begins "In a multibillion-dollar effort, the Department of Defense (DOD) plans to build a space-based communications system that leverages technologies never before used in space. Such a system would enable DOD to transform how information is collected on potential U.S. adversaries and how military forces are warned of hostile action. The backbone of this system will be the Transformational Satellite (TSAT), which is e… more
Date: December 4, 2003
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

[TDNA Names Officers and Director for 2004]

Description: The Texas Daily Newspaper Association names Officers and Directors for 2004, with a news release on December 4, 2003. TDNA has named new officer and directors, as of January 1, Donnis Bagget will become president, W. Lawrence Walker, Jr., will become vice-president, Jeremy L. Halbreich, will be elected treasurer and Wesley R. Turner will become chairman of the executive committee. The document details the life and accomplishments of Donnis Baggett, the newly TDNA elected President, as well as g… more
Date: December 4, 2003
Creator: Texas Daily Newspaper Association
Item Type: Refine your search to only Text
Partner: UNT Libraries Special Collections
open access

The Advanced Light Source Upgrade

Description: The ALS, a third-generation synchrotron light source at Berkeley Lab, has been operating for almost a decade and is generating forefront science by exploiting the high brightness of a third-generation source in three areas: (1) high resolving power for spectroscopy; (2) high spatial resolution for microscopy and spectromicroscopy; and (3) high coherence for experiments such as speckle. However, the ALS was one of the first third-generation machines to be designed, and accelerator and insertion-… more
Date: November 4, 2003
Creator: Chemla, Daniel S.; Feinberg, Benjamin; Hussain, Zahid; Krebs, Gary F.; Padmore, Howard A.; Robin, David S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Advanced Oxidation Process

Description: The removal of recalcitrant sulfur species, dibenzothiophene and its derivatives, from automotive fuels is an integral component in the development of cleaner burning and more efficient automobile engines. Oxidative desulfurization (ODS) wherein the dibenzothiophene derivative is converted to its corresponding sulfoxide and sulfone is an attractive approach to sulfur removal because the oxidized species are easily extracted or precipitated and filtered from the hydrocarbon phase. Fe-TAML{reg_si… more
Date: November 4, 2003
Creator: Horwitz, Colin P. & Collins, Terrence J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Application of adaptive mesh refinement to particle-in-cell simulations of plasmas and beams

Description: Plasma simulations are often rendered challenging by the disparity of scales in time and in space which must be resolved. When these disparities are in distinctive zones of the simulation domain, a method which has proven to be effective in other areas (e.g. fluid dynamics simulations) is the mesh refinement technique. We briefly discuss the challenges posed by coupling this technique with plasma Particle-In-Cell simulations, and present examples of application in Heavy Ion Fusion and related f… more
Date: November 4, 2003
Creator: Vay, J. L.; Colella, P.; Kwan, J. W.; McCorquodale, P.; Serafini, D. B.; Friedman, A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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