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Simulated Passage Through A Modified Kaplan Turbine Pressure Regime: A Supplement to "Laboratory Studies of the Effects of Pressure and Dissolved Gas Supersaturation on Turbine-Passed Fish"

Description: Migratory and resident fish in the Columbia River basin are exposed to stresses associated with hydroelectric power production, including pressure changes during turbine passage and dissolved gas supersaturation (resulting from the release of water from the spillway). The responses of fall Chinook salmon and bluegill sunfish to these two stresses, both singly and in combination, were investigated in the laboratory. A previous test series (Abernethy et al. 2001) evaluated the effects of passage … more
Date: March 15, 2002
Creator: Abernethy, Cary S.; Amidan, Brett G. & Cada, G. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Generalization of Spatial Channel Theory to Three-Dimensional x-y-z Transport Computations

Description: Spatial channel theory, initially introduced in 1977 by M. L. Williams and colleagues at ORNL, is a powerful tool for shield design optimization. It focuses on so called ''contributon'' flux and current of particles (a fraction of the total of neutrons, photons, etc.) which contribute directly or through their progeny to a pre-specified response, such as a detector reading, dose rate, reaction rate, etc., at certain locations of interest. Particles that do not contribute directly or indirectly … more
Date: March 12, 2002
Creator: Abu-Shumays, I. K.; Hunter, M. A.; Martz, R. L. & Risner, J. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Performance Evaluation Tests of Insulated Pressure Vessels for Vehicular Hydrogen Storage

Description: Insulated pressure vessels are cryogenic-capable pressure vessels that can be fueled with liquid hydrogen or ambient-temperature compressed hydrogen. This flexibility results in multiple advantages with respect to compressed hydrogen tanks or low-pressure liquid hydrogen tanks. Our work is directed at verifying that commercially available aluminum-lined, fiber-wrapped pressure vessels can be safely used to store liquid hydrogen. A series of tests have been conducted, and the results indicate th… more
Date: March 1, 2002
Creator: Aceves, S M; Martinez-Frias, J & Espinoza-Loza, F
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

DIGESTER GAS - FUEL CELL - PROJECT

Description: GEW has been operating the first fuel cell in Europe producing heat and electricity from digester gas in an environmentally friendly way. The first 9,000 hours in operation were successfully concluded in August 2001. The fuel cell powered by digester gas was one of the 25 registered ''Worldwide projects'' which NRW presented at the EXPO 2000. In addition to this, it is a key project of the NRW State Initiative on Future Energies. All of the activities planned for the first year of operation wer… more
Date: March 1, 2002
Creator: Adolph, Dr.-Eng. Dirk & Saure, Dipl.-Eng. Thomas
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

QED Radiative Corrections in Processes of Exclusive Pion Electroproduction

Description: Formalism for radiative correction (RC) calculation in exclusive pion electroproduction on the proton is presented. A FORTRAN code EXCLURAD is developed for the RC procedure. The numerical analysis is done in the kinematics of current Jefferson Lab experiments.
Date: March 1, 2002
Creator: Afanasev, Andrei; Akushevich, I.; Burkert, Volker & Joo, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Testing and modeling of seepage into underground openings in aheterogeneous fracture system at Yucca Mountain, Nevada

Description: We discuss field activities designed to characterize seepage into an underground opening at the potential site for geologic storage of high-level radioactive waste (HLRW) at Yucca Mountain, Nevada, and the use of these data for development and calibration of a model for predicting seepage into planned HLRW emplacement drifts. Air-injection tests were conducted to characterize the permeability of the fractured rock, and liquid-release tests (LRTs) were conducted and seepage monitored to characte… more
Date: March 25, 2002
Creator: Ahlers, C. F.; Trautz, R. C.; Cook, P. J. & Finsterle, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Non-Adiabatic Effects on Combustion Front Propagation in Porous Media: Multiplicity of Steady States

Description: The sustained propagation of combustion fronts in porous media is a necessary condition for the success of an in situ combustion project for oil recovery. Compared to other recovery methods, in situ combustion involves the added complexity of exothermic reactions and temperature-dependent chemical kinetics. In the presence of heat losses, the possibility of ignition and extinction (quenching) exists. In this report, we address the properties of combustion fronts propagating at a constant veloci… more
Date: March 11, 2002
Creator: Akkutlu, I. Yucel & Yortsos, Yanis C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ADVANCED TURBINE SYSTEMS PROGRAM

Description: The market for power generation equipment is undergoing a tremendous transformation. The traditional electric utility industry is restructuring, promising new opportunities and challenges for all facilities to meet their demands for electric and thermal energy. Now more than ever, facilities have a host of options to choose from, including new distributed generation (DG) technologies that are entering the market as well as existing DG options that are improving in cost and performance. The mark… more
Date: March 1, 2002
Creator: Ali, Sy
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Highways of a Global Traveler: Tracking Tropospheric Ozone

Description: On the stage of global change, ozone plays the role of both hero and villain. This brief document discusses about the tracking of Tropospheric Ozone, where ozone forms and where it travels have become key concerns for international health and economic policy-making.
Date: March 22, 2002
Creator: Allen, Jeannie & Simmon, Robert
Item Type: Refine your search to only Text
Partner: UNT Libraries
open access

LOW TEMPERATURE CATHODE SUPPORTED ELECTROLYTES

Description: This project has three main goals: Thin Films Studies, Preparation of Graded Porous Substrates and Basic Electrical Characterization and testing of Planar Single Cells. This period has continued to address the problem of making dense 1/2 to 5 {micro}m thick dense layers on porous substrates (the cathode LSM). Our current status is that we are making structures of 2-5 cm{sup 2} in area, which consist of either dense YSZ or CGO infiltrated into a 2-5 {micro}m thick 50% porous layer made of either… more
Date: March 31, 2002
Creator: Anderson, Harlan U.; Dogan, Fatih & Petrovsky, Vladimir
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Frictional behavior of diamondlike carbon films in vacuum and under varying water vapor pressure.

Description: In this study, we investigated the frictional behavior of both hydrogenated and hydrogen-free diamondlike carbon (DLC) films in high vacuum (10{sup -6} Pa) at room temperature. Water was also introduced into the vacuum chamber to elucidate its effects on DLC film tribology. The hydrogen-free DLC (also referred to as tetrahedral amorphous carbon, or ta-C) was produced by an arc-PVD process, and the highly hydrogenated DLC was produced by plasma-enhanced chemical-vapor deposition. Tribological me… more
Date: March 25, 2002
Creator: Andersson, J.; Erck, R. A. & Erdemir, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Early universe cosmology and tests of fundamental physics

Description: This is the report of the Working Group on Early Universe Cosmology and tests of Fundamental Physics, group P4.8 of the of the Snowmass 2001 conference. Here we summarize the impressive array of advances that have taken place in this field, and identify opportunities for even greater progress in the future. Topics include Dark Energy, Cosmic Acceleration, Inflation, Phase Transitions, Baryogenesis, and String/M-theory Cosmology. The introductory section gives an executive summary with six key o… more
Date: March 4, 2002
Creator: Andreas Albrecht, Joshua A. Frieman and Mark Trodden
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Broadband Internet Access: Background and Issues

Description: This report is about the Broadband Internet Access, The Background and analysis of Broadband. It's importance, and about broadband technologies like Cable, Satellite and other technologies. The status of Broadband Deployment and Development Issues.
Date: March 4, 2002
Creator: Angele. A
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ASIC Wafer Test System for the ATLAS Semiconductor Tracker Front-End Chip

Description: An ASIC wafer test system has been developed to provide comprehensive production screening of the ATLAS Semiconductor Tracker front-end chip (ABCD3T). The ABCD3T[1] features a 128-channel analog front-end, a digital pipeline, and communication circuitry, clocked at 40 MHz, which is the bunch crossing frequency at the LHC (Large Hadron Collider). The tester measures values and tolerance ranges of all critical IC parameters, including DC parameters, electronic noise, time resolution, clock levels… more
Date: March 19, 2002
Creator: Anghinolfi, F.; Bialas, W.; Busek, N.; Ciocio, A.; Cosgrove, D.; Fadeyev, V. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Study of Past, Present, and Future Radiation Dose Pathways from Hanford Site Effluents

Description: The purpose of this study is to determine whether changes to Hanford operations, as well as changes in the regulatory environment, will require new approaches to ensure radiation protection of the public and the environment. This document discusses the applicable regulations that govern public radiation protection at DOE facilities, recent radiological assessments for members of the public near the Hanford Site, and possible new approaches that may be needed to assure that the Hanford Site can … more
Date: March 19, 2002
Creator: Antonio, Ernest J.; Rhoads, Kathleen & Staven, Lissa H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Quark-Hadron Duality in Inclusive Electron-Nucleus Scattering

Description: Recent inclusive electron-nucleus scattering data have been utilized for precision tests of quark-hadron duality. The data are in the resonance and quasielastic regions and cover a range in Q{sup 2} from 0.5 to 7 (GeV/c){sup 2}. The Q{sup 2} dependence of the moments of the F{sub 2} structure function were investigated and indicate that duality holds for nuclei, even at low Q{sup 2}.
Date: March 1, 2002
Creator: Arrington, J.; Crowder, J.; Ent, R.; Keppel, C. & Niculescu, I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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