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Certification Testing and Demonstration of Insulated Pressure Vessels for Vehicular Hydrogen and Natural Gas Storage

Description: We are working on developing an alternative technology for storage of hydrogen or natural gas on light-duty vehicles. This technology has been titled insulated pressure vessels. Insulated pressure vessels are cryogenic-capable pressure vessels that can accept either liquid fuel or ambient-temperature compressed fuel. Insulated pressure vessels offer the advantages of cryogenic liquid fuel tanks (low weight and volume), with reduced disadvantages (fuel flexibility, lower energy requirement for f… more
Date: May 22, 2002
Creator: Aceves, S. M.; Martinez-Frias, J.; Espinosa-Loza, F.; Schaffer, R. & Clapper, W.
Partner: UNT Libraries Government Documents Department
open access

Optimization of a CNG series hybrid concept vehicle

Description: Compressed Natural Gas (CNG) has favorable characteristics as a vehicular fuel, in terms of fuel economy as well as emissions. Using CNG as a fuel in a series hybrid vehicle has the potential of resulting in very high fuel economy (between 26 and 30 km/liter, 60 to 70 mpg) and very low emissions (substantially lower than Federal Tier II or CARB ULEV). This paper uses a vehicle evaluation code and an optimizer to find a set of vehicle parameters that result in optimum vehicle fuel economy. The v… more
Date: September 22, 1995
Creator: Aceves, S. M.; Smith, J. R.; Perkins, L. J.; Haney, S. W. & Flowers, D. L.
Partner: UNT Libraries Government Documents Department
open access

[The Annenberg Foundation grants to arts education]

Description: A newspaper clipping featuring an snippet in the left side on the Annenberg Foundation, a foundation based in St. Davis, Pennsylvania, has announced their latest series of grants towards arts education. A $4.3 million challenge grant to six regional institutes to show how the arts can boost student academic achievements.
Date: May 22, 1996
Creator: Across The Nation
Partner: UNT Libraries Special Collections
open access

High efficiency shale oil recovery. Fifth quarterly report, January 1, 1993--March 31, 1993

Description: The overall project objective is to demonstrate the high efficiency of the Adams Counter-Current shale oil recovery process. The efficiency will first be demonstrated on a small scale, in the current phase, after which the demonstration will be extended to the operation of a small pilot plant. Thus the immediate project objective is to obtain data on oil shale retorting operations in a small batch rotary kiln that will be representative of operations in the proposed continuous process pilot pla… more
Date: April 22, 1993
Creator: Adams, D. C.
Partner: UNT Libraries Government Documents Department
open access

SDC conceptual design: Scintillating fiber outer tracker

Description: The authors propose an all-scintillating fiber detector for the purpose of outer tracking for the SDC. The objectives of this tracking system are to: (1) provide a first level trigger for {vert_bar}{eta}{vert_bar} < 2.3 with sharp p{sub T} threshold with the ability to resolve individual beam crossings; (2) provide pattern recognition capability and momentum resolution which complements and extends the capabilities of the inner silicon tracking system; (3) provide three dimensional linkage with… more
Date: January 22, 1992
Creator: Adams, D.; Baumbaugh, A.; Bird, F. & Collaboration, SDC
Partner: UNT Libraries Government Documents Department
open access

High efficiency shale oil recovery

Description: The overall project objective is to demonstrate the high efficiency of the Adams Counter-Current shale oil recovery process. The efficiency will first be demonstrated on a small scale, in the current phase, after which the demonstration will be extended to the operation of a small pilot plant. Thus the immediate project objective is to obtain data on oil shale retorting operations in a small batch rotary kiln that will be representative of operations in the proposed continuous process pilot pla… more
Date: April 22, 1993
Creator: Adams, D.C.
Partner: UNT Libraries Government Documents Department
open access

Micrometer-Scale Machining of Metals and Polymers Enabled by Focused Ion Beam Sputtering

Description: This work combines focused ion beam sputtering and ultra-precision machining for microfabrication of metal alloys and polymers. Specifically, micro-end mills are made by Ga ion beam sputtering of a cylindrical tool shank. Using an ion energy of 20keV, the focused beam defines the tool cutting edges that have submicrometer radii of curvature. We demonstrate 25 {micro}m diameter micromilling tools having 2, 4 and 5 cutting edges. These tools fabricate fine channels, 26-28 microns wide, in 6061 al… more
Date: December 22, 1998
Creator: Adams, D.P.; Benavides, G.L. & Vasile, M.J.
Partner: UNT Libraries Government Documents Department
open access

Tracer Stability and Chemical Changes in an Injected Geothermal Fluid During Injection-Backflow Testing at the East Mesa Geothermal Field

Description: The stabilities of several tracers were tested under geothermal conditions while injection-backflow tests were conducted at East Mesa. The tracers I and Br were injected continuously while SCN (thiocyanate), B, and disodium fluorescein were each injected as a point source (slug). The tracers were shown to be stable, except where the high concentrations used during slug injection induced adsorption of the slug tracers. However, adsorption of the slug tracers appeared to ''armor'' the formation a… more
Date: January 22, 1985
Creator: Adams, M. C.
Partner: UNT Libraries Government Documents Department
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Emergency cooling and air filtration systems for HAPO reactors

Description: This report represents a critical review of existing reactor cooling systems and discusses suggested supplementary-cooling system which might be employed in emergencies resulting from such natural hazards as earthquake, equipment failure, or personnel error. In addition the subject of building filtration is discussed. Maintenance of an uninterrupted flow of cooling water is of major concern to the safety of any HAPO reactor. For some time supplementary cooling systems which would be capable of … more
Date: December 22, 1958
Creator: Adams, O. E. Jr.
Partner: UNT Libraries Government Documents Department
open access

Generating High-Brightness Light Ion Beams for Inertial Fusion Energy

Description: Light ion beams may be the best option for an Inertial Fusion Energy (IFE) driver from the standpoint of ei%ciency, standoff, rep-rate operation and cost. This approach uses high-energy-density pulsed power to efficiently accelerate ions in one or two stages at fields of 0.5 to 1.0 GV/m to produce a medium energy (30 MeV), high-current (1 MA) beam of light ions, such as lithium. Ion beams provide the ability for medium distance transport (4 m) of the ions to the target, and standofl of the driv… more
Date: October 22, 1998
Creator: Adams, R. G.; Bailey, J. E.; Cuneno, M. E.; Desjarlais, M. P.; Filuk, A. B.; Hanson, D. L. et al.
Partner: UNT Libraries Government Documents Department
open access

Fresnel Integral Equations: Numerical Properties

Description: A spatial-domain solution to the problem of electromagnetic scattering from a dielectric half-space is outlined. The resulting half-space operators are referred to as Fresnel surface integral operators. When used as preconditioners for nonplanar geometries, the Fresnel operators yield surface Fresnel integral equations (FIEs) which are stable with respect to dielectric constant, discretization, and frequency. Numerical properties of the formulations are discussed.
Date: July 22, 2003
Creator: Adams, R. J.; Champagne, N. J., II & Davis, B. A.
Partner: UNT Libraries Government Documents Department
open access

Iran's 2009 Presidential Elections

Description: This report analyzes and discusses Iran's 2009 presidential election, particularly the campaigns of reformist candidate Mir Hussein Musavi and incumbent President Mahmoud Ahmadinejad. Allegations of vote rigging and election fraud have led to protests by supporters of candidate Musavi and have provoked international attention.
Date: June 22, 2009
Creator: Addis, Casey L.
Partner: UNT Libraries Government Documents Department
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Development of a video-based slurry sensor for on-line ash analysis. Eighth quarterly technical progress report, July 1, 1996--September 30, 1996

Description: Automatic control of fine coal cleaning circuits has traditionally been limited by the lack of sensors for on-line ash analysis. Although several nuclear-based analyzers are available, none have seen widespread acceptance. This is largely due to the fact that nuclear sensors are expensive and tend to be influenced by changes in seam type and pyrite content. Recently, researchers at VPI&SU have developed an optical sensor for phosphate analysis. The sensor uses image processing technology to ana… more
Date: October 22, 1996
Creator: Adel, G. T. & Luttrell, G. H.
Partner: UNT Libraries Government Documents Department
open access

Development of a video-based slurry sensor for on-line ash analysis. Quarterly report, April 1, 1996--June 30, 1996

Description: Automatic control of fine coal cleaning circuits has traditionally been limited by the lack of sensors for on-line ash analysis. Although several nuclear-based analyzers are available, none have seen widespread acceptance. This is largely due to the fact that nuclear sensors are expensive and tend to be influenced by changes in seam type and pyrite content. Recently, researchers at VPI&SU have developed an optical sensor for phosphate analysis. The sensor uses image processing technology to ana… more
Date: July 22, 1996
Creator: Adel, G. T. & Luttrell, G. H.
Partner: UNT Libraries Government Documents Department
open access

Progress on H5Part: A Portable High Performance Parallel DataInterface for Electromagnetics Simulations

Description: Significant problems facing all experimental andcomputationalsciences arise from growing data size and complexity. Commonto allthese problems is the need to perform efficient data I/O ondiversecomputer architectures. In our scientific application, thelargestparallel particle simulations generate vast quantitiesofsix-dimensional data. Such a simulation run produces data foranaggregate data size up to several TB per run. Motived by the needtoaddress data I/O and access challenges, we have impleme… more
Date: June 22, 2007
Creator: Adelmann, Andreas; Gsell, Achim; Oswald, Benedikt; Schietinger,Thomas; Bethel, Wes; Shalf, John et al.
Partner: UNT Libraries Government Documents Department
open access

105-DR Large Sodium Fire Facility closure activities evaluation report

Description: This report evaluates the closure activities at the 105-DR Large Sodium Fire Facility. The closure activities discussed include: the closure activities for the structures, equipment, soil, and gravel scrubber; decontamination methods; materials made available for recycling or reuse; and waste management. The evaluation compares these activities to the regulatory requirements and closure plan requirements. The report concludes that the areas identified in the closure plan can be clean closed.
Date: April 22, 1996
Creator: Adler, J. G.
Partner: UNT Libraries Government Documents Department
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Advances in Normal Conducting Accelerator Technology from the X-Band Linear Collider Program

Description: In the mid-1990's, groups at SLAC and KEK began dedicated development of X-band (11.4 GHz) rf technology for a next generation, TeV-scale linear collider. The choice of a relatively high frequency, four times that of the SLAC 50 GeV Linac, was motivated by the cost benefits of having lower rf energy per pulse (hence fewer rf sources) and reasonable efficiencies at high gradients (hence shorter linacs). To realize such savings, however, requires operation at gradients and peak powers much higher… more
Date: June 22, 2005
Creator: Adolphsen, C.
Partner: UNT Libraries Government Documents Department
open access

Cesium Ion Exchange Using Tank 241-AN-104 Supernate

Description: The River Protection Project is to design and build a high level nuclear waste treatment facility. The waste treatment plant is to process millions of gallons of radioactive waste stored in tanks at the Hanford Site. The high level nuclear waste treatment process includes various unit operations, such as ultrafiltration, precipitation, evaporation, ion exchange, and vitrification. Ion exchange is identified as the optimal treatment method for removal of cesium-137 and Tc-99 from the waste. Exte… more
Date: December 22, 2003
Creator: Adu-Wusu, K.
Partner: UNT Libraries Government Documents Department
open access

EVALUATION OF POTENTIAL ELUANTS FOR NON-ACID ELUTION OF CESIUM FROM RESORCINOL-FORMALDEHYDE RESIN

Description: Small-column ion exchange (SCIX) units installed in high-level waste tanks to remove Cs-137 from highly alkaline salt solutions are among the waste treatment plans in the DOE-complex. Spherical Resorcinol-Formaldehyde (sRF) is the ion exchange resin selected for use in the Hanford Waste Treatment and Immobilization Plant (WTP). It is also the primary ion exchange material under consideration for SCIX at the Hanford site. The elution step of the multi-step ion exchange process is typically done … more
Date: December 22, 2010
Creator: Adu-Wusu, K. & Pennebaker, F.
Partner: UNT Libraries Government Documents Department
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