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Estimation of Fracture Porosity in an Unsaturated Fractured Welded Tuff Using Gas Tracer Testing

Description: Kinematic fracture porosity is an important hydrologic transport parameter for predicting the potential of rapid contaminant migration through fractured rock. The transport velocity of a solute moving within a fracture network is inversely related to the fracture porosity. Since fracture porosity is often one or two orders of magnitude smaller than matrix porosity, and fracture permeability is often orders of magnitude greater than matrix permeability, solutes may travel significantly faster in… more
Date: October 18, 2001
Creator: Freifeild, B.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Vermont plane]

Description: B-roll video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date: October 18, 2001, 5:00 p.m.
Duration: 1 minute 09 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Wadih el Hage]

Description: Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date: October 18, 2001, 10:00 p.m.
Duration: 1 minute 09 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Passive Wake Vortex Control

Description: The collapse of the Soviet Union and ending of the Cold War brought about many significant changes in military submarine operations. The enemies that the US Navy faces today and in the future will not likely be superpowers armed with nuclear submarines, but rather smaller, rogue nations employing cheaper diesel/electric submarines with advanced air-independent propulsion systems. Unlike Cold War submarine operations, which occurred in deep-water environments, future submarine conflicts are anti… more
Date: October 18, 2001
Creator: Ortega, J M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nuclear Diagnostics of ICF

Description: In inertial confinement fusion (ICF), a high temperature and high density plasma is produced by the spherical implosion of a small capsule. A spherical target capsule is irradiated uniformly by a laser beam (direct irradiation) or x-rays from a high Z enclosure (hohlraum) that is irradiated by laser or ion beams (indirect irradiation). Then high-pressure ablation of the surface causes the fuel to be accelerated inward. Thermonuclear fusion reactions begin in the center region of the capsule as … more
Date: October 18, 2001
Creator: Izumi, N.; Ierche, R. A.; Moran, M. J.; Phillips, T. W.; Sangster, T. C.; Schmid, G. J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The NIF Integrated Timimg System-Design and Performance

Description: The National Ignition Facility (NIF) will contain the world's most powerful laser. NIF requires more than 1500 precisely timed trigger pulses to control the timing of laser and diagnostic equipment. The Integrated Timing System applies new concepts to generate and deliver triggers at preprogrammed times to equipment throughout the laser and target areas of the facility. Trigger pulses during the last 2 seconds of a shot cycle are required to have a jitter of less than 20 ps (rms) and a wander o… more
Date: October 18, 2001
Creator: Lerche, R. A.; Coutts, G. W.; Lagin, L. J.; Nyholm, R. A.; Stever, R. D.; Wiedwald, J. D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Composition and architecture of the cell walls of grasses and the mechanisms of synthesis of cell wall polysaccharides. Final report for period September 1, 1988 - April 30, 2001

Description: This program was devoted toward complete understanding of the polysaccharide structure and architecture of the primary cell walls grasses and cereals, and the biosynthesis of the mixed-linkage beta-glucane, a cellulose interacting polymer that is synthesized uniquely by grass species and close relatives. With these studies as focal point, the support from DOE was instrumental in the development of new analytical means that enabled us to characterize carbohydrate structure, to reveal new feature… more
Date: October 18, 2001
Creator: Carpita, Nicholas C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Strategies for Enhancing Biomass Energy Utilization in the Philippines

Description: Technical report on Biofuel energy development in the Philippines and the role it can play in eradicating rural poverty and creating self-reliant communities.
Date: October 18, 2001
Creator: Samson, R.; Helwig, T.; Stohl, D.; De Maio, A.; Duxbury, P. (Resource Efficient Agricultural Production-Canada); Mendoza, T. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The future through the past: The use of analog sites for design criteria and long-term performance assessment of evapotranspiration landfill covers.

Description: There is growing support for using evapotranspiration (ET) covers for closure of low-level waste (LLW) and other types of waste disposal sites, particularly in the lower latitude arid regions of the western United States. For the Nevada Test Site (NTS), monolayer ET covers is the baseline technology for closure of LLW and mixed LLW cells. To better predict the long-term performance of monolayer ET covers, as well as to identify design criteria that will potentially improve their performance, th… more
Date: October 18, 2001
Creator: Shafer, David; Miller, Julianne; Edwards, Susan & Rawlinson, Stuart
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Resolving discrepancies between hydraulic and chemical calibration data for seawater intrusion groundwater flow models by considering climate-driven sea level change.

Description: Groundwater models of seawater intrusion environments can be calibrated using both hydraulic and chemical information. The possible impact of the long-term transient process of sea level change is difficult to identify, but important to accurate simulation of present conditions. The response times of the pressure and chemical fields to major fluctuations in sea level change are investigated
Date: October 18, 2001
Creator: Chapman, J.; Hassan, A. & Pohlmann, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Thermal Phase Transitions in Finite Quantum Systems

Description: In this Proceedings, the author will describe the behavior of two different quantum-mechanical systems as a function of increasing temperature. While these systems are somewhat different, the questions addressed are very similar, namely, how does one describe transitions in phase of a finite many-body system; how does one recognize these transitions in practical calculations; and how may one obtain the order of the transition.
Date: October 18, 2001
Creator: Dean, D.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Towards Robust Face Recognition from Video

Description: A novel, template-based method for face recognition is presented. The goals of the proposed method are to integrate multiple observations for improved robustness and to provide auxiliary confidence data for subsequent use in an automated video surveillance system. The proposed framework consists of a parallel system of classifiers, referred to as observers, where each observer is trained on one face region. The observer outputs are combined to yield the final recognition result. Three of the fo… more
Date: October 18, 2001
Creator: Price, JR
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Remediation of the Faultless underground nuclear test: Moving forward in the face of model uncertainty.

Description: The hundreds of locations where nuclear tests were conducted underground are dramatic legacies of the cold war. The vast majority of these tests are within the borders of the Nevada Test Site (NTS), but 11 underground tests were conducted elsewhere. The Faultless test, conducted in central Nevada, is the site of an ongoing environmental remediation effort that has successfully progressed through numerous technical challenges due to close cooperation between the U.S. Department of Energy (DOE) N… more
Date: October 18, 2001
Creator: Chapman, Jenny B.; Pohlmann, Karl; Pohll, Greg; Hassan, Ahmed; Sanders, Peter; Sanchez, Monica et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Contact Pairing Interaction for the Hartree-Fock-Bogoliubov Calculations

Description: Properties of density-dependent contact pairing interactions in nuclei are discussed. It is shown that the pairing interaction that is intermediate between surface and volume pairing forces gives the pairing gaps that are compatible with the experimental odd-even mass staggering. Results of the deformed Hartree-Fock-Bogoliubov calculations for this ''mixed'' pairing interaction, and using the transformed harmonic oscillator basis, are presented.
Date: October 18, 2001
Creator: Dobaczewski, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The use of streambed temperatures to estimate transmission losses on an experimental channel.

Description: Quantifying channel transmission losses in arid environments is important for a variety of reasons, from engineering design of flood control structures to evaluating recharge. To quantify the losses in an alluvial channel, an experiment was performed on a 2-km reach of an alluvial fan located on the Nevada Test Site. The channel was subjected to three separate flow events. Transmission losses were estimated using standard discharge monitoring and subsurface temperature modeling approach. Four s… more
Date: October 18, 2001
Creator: Naranjo, Ramon C.; Young, Michael H.; Niswonger, Richard; Miller, Julianne J. & French, Richard H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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