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A physically-based abrasive wear model for composite materials

Description: A simple physically-based model for the abrasive wear of composite materials is presented based on the mechanics and mechanisms associated with sliding wear in soft (ductile) matrix composites containing hard (brittle) reinforcement particles. The model is based on the assumption that any portion of the reinforcement that is removed as wear debris cannot contribute to the wear resistance of the matrix material. The size of this non-contributing portion of the reinforcement is estimated by model… more
Date: May 1, 2001
Creator: Lee, Gun Y.; Dharan, C. K. H. & Ritchie, Robert O.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Proceedings of National Avian-Wind Power Planning Meeting IV

Description: OAK-B135 The purpose of the fourth meeting was to (1) share research and update research conducted on avian wind interactions (2) identify questions and issues related to the research results, (3) develop conclusions about some avian/wind power issues, and (4) identify questions and issues for future avian research.
Date: May 1, 2001
Creator: Subcommittee, NWCC Avian
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Research on electric utility regulatory and policy matters relating to state and federal jurisdiction. Final report for period September 1, 1994 - February 28, 2001

Description: The projects funded by the above referenced grant, are based on the October 1992 proposal to the FERC, which outlined the need for closer dialogue between Federal and State energy officials. The project is designed to assist State commissioners in responding to outreach initiatives that were already forthcoming from the FERC and to further develop and refine proposals that were still outstanding.
Date: May 1, 2001
Creator: Spahn, Andrew & Dwyer, Alix
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Assessment of the Fusion Energy Sciences Program. Final Report

Description: An assessment of the Office of Fusion Energy Sciences (OFES) program with guidance for future program strategy. The overall objective of this study is to prepare an independent assessment of the scientific quality of the Office of Fusion Energy Sciences program at the Department of Energy. The Fusion Science Assessment Committee (FuSAC) has been appointed to conduct this study.
Date: May 1, 2001
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Development of Layered Photonic Band Gap Structures Using a Micro-Transfer Molding Technique

Description: Photonic band gap (PBG) crystals are periodic dielectric structures that manipulate electromagnetic radiation in a manner similar to semiconductor devices manipulating electrons. Whereas a semiconductor material exhibits an electronic band gap in which electrons cannot exist, similarly, a photonic crystal containing a photonic band gap does not allow the propagation of specific frequencies of electromagnetic radiation. This phenomenon results from the destructive Bragg diffraction interference … more
Date: May 1, 2001
Creator: Sutherland, Kevin Jerome
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

Thermodynamic Critical Field and Superconducting Fluctuation of Vortices for High Temperature Cuprate Superconductor: La-214

Description: Thermodynamics has been studied systematically for the high temperature cuprate superconductor La{sub 2-x}Sr{sub x}CuO{sub 4-{delta}}, La-214, in the entire superconductive region from strongly underdoped to strongly overdoped regimes. Magnetization studies with H{parallel}c have been made in order to investigate the changes in free energy of the system as the number of carriers is reduced. Above the superconducting transition temperature, the normal-state magnetization exhibits a two-dimension… more
Date: May 1, 2001
Creator: Huh, Yung Moo
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Deep Borehole Instrumentation Along San Francisco Bay Bridges - 2001

Description: This is a progress report on the Bay Bridges downhole network. Between 2 and 8 instruments have been spaced along the Dumbarton, San Mateo, Bay, and San Rafael bridges in San Francisco Bay, California. The instruments will provide multiple use data that is important to geotechnical, structural engineering, and seismological studies. The holes are between 100 and 1000 ft deep and were drilled by Caltrans. There are twenty-one sensor packages at fifteen sites. The downhole instrument package cont… more
Date: May 1, 2001
Creator: Hutchings, L.; Kasameyer, P.; Long, L.; McEvilly, T.; Clymer, R.; Urhhammer, R. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Implementation of advanced LCNG fueling infrastructure in Texas along the I-35/NAFTA Clean Corridor Project. Final report

Description: This report documents the process of planning, siting, and permitting recent LCNG station projects; identifying existing constraints in these processes, and recommendations for improvements; LCNG operating history.
Date: May 1, 2001
Creator: Taylor, Stan; Hightower, Jared & Knight, Koby
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Technology Transfer to U.S. Independent Oil and Natural Gas Producers

Description: The Petroleum Technology Transfer Council (PTTC) continued pursuing its mission of helping U.S. independent oil and natural gas producers make timely, informed technology decisions. PTTC's Board made a strategic decision to relocate the Headquarters (HQ) office from Washington, DC to Houston, Texas. Driving force behind relocation was to better connect with independent producers, but cost savings could also be realized. Relocation was accomplished in late December 2000, with the HQ office being… more
Date: May 1, 2001
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The CLAS Forward Electromagnetic Calorimeter

Description: The CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab utilizes six iron-free superconducting coils to provide an approximately toroidal magnetic field. The six sectors are instrumented individually to form six independent spectrometers. The forward region (8deg < (theta) < 45deg) of each sector is equipped with a lead-scintillator electromagnetic sampling calorimeter (EC), 16 radiation lengths thick, using a novel triangular geometry with stereo readout. With its good energy and… more
Date: May 1, 2001
Creator: Amarian, M.; Asryan, Geram; Beard, Kevin; Brooks, Will; Burkert, Volker; Carstens, Tom et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Genetic and Phenotype [Phenotypic] Catalog of Native Resident Trout of the interior Columbia River Basin : FY-99 Report : Populations of the Pend Oreille, Kettle, and Sanpoil River Basins of Colville National Forest.

Description: The 1994 Fish and Wildlife Program of the Northwest Power Planning Council specifies the recovery and preservation of population health of native resident fishes of the Columbia River Basin. Among the native resident species of concern are interior rainbow trout of the Columbia River redband subspecies Oncorhynchus mykiss gairdneri 1 and westslope cutthroat trout O. clarki lewisi. The westslope cutthroat trout has been petitioned for listing under the U. S. Endangered Species Act (American Wild… more
Date: May 1, 2001
Creator: Trotter, Patrick C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Laser-Induced Fluorescence Detection in High-Throughput Screening of Heterogeneous Catalysts and Single Cells Analysis

Description: Laser-induced fluorescence detection is one of the most sensitive detection techniques and it has found enormous applications in various areas. The purpose of this research was to develop detection approaches based on laser-induced fluorescence detection in two different areas, heterogeneous catalysts screening and single cell study. First, we introduced laser-induced imaging (LIFI) as a high-throughput screening technique for heterogeneous catalysts to explore the use of this high-throughput s… more
Date: May 1, 2001
Creator: Su, Hui
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

Conbined noble gas and stable isotope constraints on nitrogen gas sources within sedimentary basins. Final report for period 15 March 1996 - 14 March 1999 extended to 14 March 2000

Description: Nitrogen is one of the major non-hydrocarbon gases found in natural gas reservoirs. The objective of this work was to combine the information available from both noble gas and stable isotope systematics to understand the origin of nitrogen and related gas sources, transport behavior, and mass balance within natural gas reservoirs and sedimentary basin systems. The goals achieved are summarized under the following headings: Noble gas and stable isotopes in nitrogen-rich natural gases; Noble gase… more
Date: May 1, 2001
Creator: Ballentine, C.J.; Halliday, Alexander N. & Lollar, B. Sherwood
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

COPPER CABLE RECYCLING TECHNOLOGY

Description: The United States Department of Energy (DOE) continually seeks safer and more cost-effective technologies for use in deactivation and decommissioning (D&D) of nuclear facilities. The Deactivation and Decommissioning Focus Area (DDFA) of the DOE's Office of Science and Technology (OST) sponsors large-scale demonstration and deployment projects (LSDDPs). At these LSDDPs, developers and vendors of improved or innovative technologies showcase products that are potentially beneficial to the DOE'… more
Date: May 1, 2001
Creator: Hubbard, Chelsea
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DATA MINING AT THE NEBRASKA OIL & GAS COMMISSION

Description: The purpose of this study of the hearing records is to identify factors that are likely to impact the performance of a waterflood in the Nebraska panhandle. The records consisted of 140 cases. Most of the hearings were held prior to 1980. Many of the records were incomplete, and data believed to be key to estimating waterflood performance such as Dykstra-Parson permeability distribution or relative permeability were absent. New techniques were applied to analyze the sparse, incomplete dataset. … more
Date: May 1, 2001
Creator: Weber, James R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of chiller modeling approaches and their usability for fault detection

Description: Selecting the model is an important and essential step in model based fault detection and diagnosis (FDD). Several factors must be considered in model evaluation, including accuracy, training data requirements, calibration effort, generality, and computational requirements. All modeling approaches fall somewhere between pure first-principles models, and empirical models. The objective of this study was to evaluate different modeling approaches for their applicability to model based FDD of vapor… more
Date: May 1, 2001
Creator: Sreedharan, Priya
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

Industrial energy efficiency policy in China

Description: Chinese industrial sector energy-efficiency policy has gone through a number of distinct phases since the founding of the People s Republic in 1949. An initial period of energy supply growth in the 1950s, 1960s, and 1970s was followed by implementation of significant energy efficiency programs in the 1980s. Many of these programs were dismantled in the 1990s during the continuing move towards a market-based economy. In an effort to once again strengthen energy efficiency, the Chinese government… more
Date: May 1, 2001
Creator: Price, Lynn; Worrell, Ernst; Sinton, Jonathan & Yun, Jiang
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Drift compression and final focus systems for heavy ion inertial fusion

Description: Longitudinal compression of space-charge dominated beams can be achieved by imposing a head-to-tail velocity tilt on the beam. This tilt has to be carefully tailored, such that it is removed by the longitudinal space-charge repulsion by the time the beam reaches the end of the drift compression section. The transverse focusing lattice should be designed such that all parts of the beam stay approximately matched, while the beam smoothly expands transversely to the larger beam radius needed in th… more
Date: May 1, 2001
Creator: de Hoon, M.J.L.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

Recovery and Sequestration of CO2 From Stationary Combustion Systems by Photosynthesis of Microalgae, Quarterly Technical Report: January-March 2001

Description: Most of the anthropogenic emissions of carbon dioxide result from the combustion of fossil fuels for energy production. Photosynthesis has long been recognized as a means, at least in theory, to sequester anthropogenic carbon dioxide. Aquatic microalgae have been identified as fast growing species whose carbon fixing rates are higher than those of land-based plants by one order of magnitude. Physical Sciences Inc. (PSI), Aquasearch, and the Hawaii Natural Energy Institute at the University of H… more
Date: May 1, 2001
Creator: Nakamura, T. & Senior, C. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of Depth-Sensing Indentation Tests with a Knoop Indenter

Description: The present work shows how data obtained in a depth-sensing indentation test using a Knoop indenter may be analyzed to provide elastic modulus and hardness of the specimen material. The method takes into account the elastic recovery along the direction of the short axis of the residual impression as the indenter is removed. If elastic recovery is not accounted for, the elastic modulus and hardness are overestimated by an amount that depends on the ratio of E/H of the specimen material. The new … more
Date: May 1, 2001
Creator: Riester, L
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The VRFurnace: A Virtual Reality Application for Energy System Data Analysis

Description: This paper presents the Virtual Reality Furnace (VRFurnace) application, an interactive 3-D visualization platform for pulverized coal furnace analysis. The VRFurnace is a versatile toolkit where a variety of different CFD data sets related to pulverized coal furnaces can be studied interactively. The toolkit combines standard CFD analysis techniques with tools that more effectively utilize the 3-D capabilities of a virtual environment. Interaction with data is achieved through a dynamic instru… more
Date: May 1, 2001
Creator: Johnson, Peter Eric
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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