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Diesel Fuel and Engines: An Analysis of EPA's New Regulations

Description: This report reviews the final regulations on diesel fuel and diesel engine emissions signed by Environmental Protection Agency Administrator Carol Browner December 21, 2000 and promulgated January 18, 2001. This report examines the rule’s potential impacts on fuel supply, summarizes the issues related to pollution controls, discusses potential impacts on the economy, and discusses issues raised by the timing and implementation schedule of the proposed rule.
Date: May 1, 2001
Creator: Yacobucci, Brent D.; McCarthy, James E.; Fischer, John W.; Segarra, Alejandro E. & Kumins, Lawrence C.
Partner: UNT Libraries Government Documents Department
open access

Retiree Health Benefits: Employer-Sponsored Benefits May Be Vulnerable to Further Erosion

Description: A letter report issued by the General Accounting Office with an abstract that begins "In 1999, nearly 10 million retired people aged 55 or older relied on employer-sponsored health insurance as either their primary source of coverage or as a supplement to their Medicare coverage. Some of these persons are concerned about the continued availability of employer-sponsored coverage. Premium increases and forecasts for a potential economic slowdown could further erode employer-sponsored benefits. In… more
Date: May 1, 2001
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

The Concentration of (236)Pu Daughters in Plutonium for Application to MOX Production from Plutonium from Dismantled US Nuclear Weapons

Description: The isotope {sup 236}Pu in the weapons-grade plutonium to be used in the US MOX (mixed-oxide) plant is of concern because the daughter products of {sup 236}Pu are sources of high-energy gamma rays. The {sup 208}Tl daughter of {sup 236}Pu emits intense, high-energy gamma rays that are important for radiation exposure calculations for plant design. It is generally thought that the concentrations of {sup 236}Pu and its daughters are well below 10{sup {minus}10}, but these concentrations are genera… more
Date: May 1, 2001
Creator: Sampson, Thomas E. & Cremers, Teresa L.
Partner: UNT Libraries Government Documents Department
open access

Superresolution and Synthetic Aperture Radar

Description: Superresolution concepts offer the potential of resolution beyond the classical limit. This great promise has not generally been realized. In this study we investigate the potential application of superresolution concepts to synthetic aperture radar. The analytical basis for superresolution theory is discussed. The application of the concept to synthetic aperture radar is investigated as an operator inversion problem. Generally, the operator inversion problem is ill posed. A criterion for judgi… more
Date: May 1, 2001
Creator: Dickey, Fred M.; Romero, Louis & Doerry, Armin W.
Partner: UNT Libraries Government Documents Department
open access

Comparison of Near-field and Far-field Air Monitoring of Plutonium-contaminated Soils from the Tonopah Test Range, Nevada

Description: Operation Roller Coaster, a series of nuclear material dispersal experiments, resulted in three areas (Clean Slates 1, 2, and 3) of widespread surface soil plutonium (Pu) contamination on the Tonopah Test Range (TTR), located 225 miles northwest of Las Vegas, Nevada. The State's Division of Environmental Protection raised concerns that dispersal of airborne Pu particles from the sites could result in undetected deposition further downwind that the background monitoring stations. Air monitoring … more
Date: May 1, 2001
Creator: Bowen, John L. & Shafer, David S.
Partner: UNT Libraries Government Documents Department
open access

Laboratory Directed Research and Development FY 2000 Annual Progress Report

Description: This is the FY00 Annual Progress report for the Laboratory Directed Research and Development (LDRD) Program at Los Alamos National Laboratory. It gives an overview of the LDRD Program, summarizes progress on each project conducted during FY00, characterizes the projects according to their relevance to major funding sources, and provides an index to principal investigators. Project summaries are grouped by LDRD component: Directed Research and Exploratory Research. Within each component, they ar… more
Date: May 1, 2001
Creator: Laboratory, Los Alamos National
Partner: UNT Libraries Government Documents Department
open access

LES SOFTWARE FOR THE DESIGN OF LOW EMISSION COMBUSTION SYSTEMS FOR VISION 21 PLANTS

Description: Further development of a Large Eddy Simulation (LES) code for the design of advanced gaseous combustion systems is described in this second quarterly report. CFD Research Corporation (CFDRC) is developing the LES module within the parallel, unstructured solver included in the commercial CFD-ACE+ software. CFDRC has implemented and tested Smagorinsky and localized dynamic subgrid turbulence models on a 2.1 million cell DOE-NETL combustor case and a 400,000 cell nonreacting backstep case. Both ca… more
Date: May 1, 2001
Creator: Cannon, Steve; Adumitroaie, Virgil; McDaniel, Keith & Smith, Cliff
Partner: UNT Libraries Government Documents Department
open access

Review of Wildfire Effects on Chemical Water Quality

Description: The Cerro Grande Fire of May 2000 burned almost 43,000 acres of forested land within the Pajarito Plateau watershed in northern New Mexico. Runoff events after the fire were monitored and sampled by Los Alamos National Laboratory. Changes in the composition of runoff water were noted when compared to runoff water composition of the previous 20 years. In order to understand the chemical water quality changes noted in runoff water after the Cerro Grande Fire, a summary of the reported effects of … more
Date: May 1, 2001
Creator: Bitner, Kelly; Gallaher, Bruce & Mullen, Ken
Partner: UNT Libraries Government Documents Department
open access

Study to Determine the Biological Feasibility of a New Fish Tagging System, 1998-2000 Progress Report.

Description: Since 1984, the National Marine Fisheries Service (NMFS) in cooperation with the Bonneville Power Administration (BPA) has conducted an ongoing research and development project to expand and improve technology for Passive-Integrated-Transponder tags (PIT tags) throughout the Columbia River Basin (CRB). Work conducted as part of this project during 1999-2000 was divided into six individual projects, which are covered separately in this report.
Date: May 1, 2001
Creator: Downing, Sandra L.
Partner: UNT Libraries Government Documents Department
open access

Lessons Learned from JTA Tester Safety Studies

Description: EP401575, Issue C, calls out a requirement to perform safety studies for testers that are used to accept Joint Test Assembly (JTA) product at Pantex (Reference 1). The underlying motivation is to ensure that personnel hazards due to inadvertent initiation of electro-explosive devices (EEDs) during JTA testing are understood and minimized. Studies have been performed on the B61-7/11 JTA, B61-3/4/10 JTA, B83 JTA, and W76 Type 2F testers at Pantex (References 2-5). Each of these studies includes a… more
Date: May 1, 2001
Creator: Bierbaum, R. L.
Partner: UNT Libraries Government Documents Department
open access

Simulation of Tailrace Hydrodynamics Using Computational Fluid Dynamics Models

Description: This report investigates the feasibility of using computational fluid dynamics (CFD) tools to investigate hydrodynamic flow fields surrounding the tailrace zone below large hydraulic structures. Previous and ongoing studies using CFD tools to simulate gradually varied flow with multiple constituents and forebay/intake hydrodynamics have shown that CFD tools can provide valuable information for hydraulic and biological evaluation of fish passage near hydraulic structures. These studies however a… more
Date: May 1, 2001
Creator: Cook, Chris B & Richmond, Marshall C
Partner: UNT Libraries Government Documents Department
open access

NON-INVASIVE DETERMINATION OF THE LOCATION AND DISTRIBUTION OF FREE-PHASE DENSE NONAQUEOUS PHASE LIQUIDS (DNAPL) BY SEISMIC REFLECTION TECHNIQUES

Description: This semi-annual technical progress report is for Task 4 site evaluation, Task 5 seismic reflection design and acquisition, and Task 6 seismic reflection processing and interpretation on DOE contact number DE-AR26-98FT40369. The project had planned one additional deployment to another site other than Savannah River Site (SRS) or DOE Hanford. During this reporting period the project had an ASME peer review. The findings and recommendation of the review panel, as well at the project team response… more
Date: May 1, 2001
Creator: Waddell, Michael G.; Domoracki, William J. & Temples, Tom J.
Partner: UNT Libraries Government Documents Department
open access

Evaluate Effects of Hydraulic Turbulence on the Survival of Migratory Fish : Design and Construction of Experimental Apparatus to Study the Potential Effects of Turbulence on Fish.

Description: This report presents the completed design and construction process, and working details, of the test apparatus for the turbulence project. As mentioned in the first progress report, this type of experiment has not been attempted previously. In addition, turbulence data in the tailrace of a power plant are not available for reference. We plan to generate turbulence intensities and scale based on representative flow velocities downstream of draft tubes as well as visual observations of flow condi… more
Date: May 1, 2001
Creator: Odeh, Mufeed
Partner: UNT Libraries Government Documents Department
open access

Backward Integration of the Equations of Motion to Correct for Free Surface Perturbations

Description: Window and free surface interfaces perturb the flow in compression wave experiments. The velocity of these interfaces is routinely measured in shock-compression experiments using interferometry (i.e., VISAR). Interface perturbations often must be accounted for before meaningful material property results can be obtained. For shockless experiments when stress is a single valued function of strain, the governing equations of motion are hyperbolic and can be numerically integrated forward or backwa… more
Date: May 1, 2001
Creator: HAYES,DENNIS BREWSTER
Partner: UNT Libraries Government Documents Department
open access

NON-INVASIVE DETERMINATION OF THE LOCATION AND DISTRIBUTION OF FREE-PHASE DENSE NONAQUEOUS PHASE LIQUIDS (DNAPL) BY SEISMIC REFLECTION TECHNIQUES

Description: The Earth Sciences and Resources Institute, University of South Carolina is conducting a 14 month proof of concept study to determine the location and distribution of subsurface Dense Nonaqueous Phase Liquid (DNAPL) carbon tetrachloride (CCl{sub 4}) contamination at the 216-Z-9 crib, 200 West area, Department of Energy (DOE) Hanford Site, Washington by use of two-dimensional high resolution seismic reflection surveys and borehole geophysical data. The study makes use of recent advances in seism… more
Date: May 1, 2001
Creator: Waddell, Michael G.; Domoracki, William J.; Temples, Tom J. & Eyer, Jerome
Partner: UNT Libraries Government Documents Department
open access

ADVANCED FLUE GAS CONDITIONING AS A RETROFIT UPGRADE TO ENHANCE PM COLLECTION FROM COAL-FIRED ELECTRIC UTILITY BOILERS

Description: The U.S. Department of Energy and ADA Environmental Solutions has begun a project to develop commercial flue gas conditioning additives. The objective is to develop conditioning agents that can help improve particulate control performance of smaller or under-sized electrostatic precipitators on utility coal-fired boilers. The new chemicals will be used to control both the electrical resistivity and the adhesion or cohesivity of the flyash. There is a need to provide cost-effective and safer alt… more
Date: May 1, 2001
Creator: Baldrey, Kenneth E.
Partner: UNT Libraries Government Documents Department
open access

BARRIER ISSUES TO THE UTILIZATION OF BIOMASS

Description: In summary, stoker-fired boilers that cofire or switch to biomass fuel may potentially have to deal with ash behavior issues such as production of different concentrations and quantities of fine particulate or aerosols and ash-fouling deposition. Stoker boiler operators that are considering switching to biomass and adding potential infrastructure to accommodate the switch may also at the same time be looking into upgrades that will allow for generating additional power for sale on the grid. Thi… more
Date: May 1, 2001
Creator: Weber, Greg F. & Zygarlicke, Christopher J.
Partner: UNT Libraries Government Documents Department
open access

NON-INVASIVE DETERMINATION OF THE LOCATION AND DISTRIBUTION OF FREE-PHASE DENSE NONAQUEOUS PHASE LIQUIDS (DNAPL) BY SEISMIC REFLECTION TECHNIQUES

Description: This semi-annual technical progress report is for part of Task 4 (site evaluation), on DOE contact number DE-AR26-98FT40369. The project had planned one additional deployment to another site other than Savannah River Site (SRS) or DOE Hanford. After the SUBCON midyear review in Albuquerque, NM, it was decided that two additional deployments would be performed. The first deployment is to test the feasibility of using non-invasive seismic reflection and AVO analysis as monitoring to assist in det… more
Date: May 1, 2001
Creator: Waddell, Michael G.; Domoracki, William J. & Temples, Tom J.
Partner: UNT Libraries Government Documents Department
open access

Microscale Zeta Potential Evaluation Using Streaming Current Measurements

Description: We present a method for determination of zeta potential in capillaries and microscale devices. The use of streaming current measurements under pressure eliminates the need for high voltage measurements while providing a relatively simple means of approximating the zeta potential. This technique finds application in evaluation of coatings as well as materials for separations media and electrokinetic pumping. We will discuss the theory, in which sample porosity and tortuosity information are not … more
Date: May 1, 2001
Creator: Hasselbrink, E. R., Jr.; Hunter, M. C.; Even, W. R., Jr. & Irvin, J. A.
Partner: UNT Libraries Government Documents Department
open access

Cloud to CAD

Description: This paper documents work performed to convert scanned range data to CAD solid model representation. The work successfully developed surface fitting algorithms for quadric surfaces (e.g. plane, cone, cylinder, and sphere), and a segmentation algorithm based entirely on surface type, rather than on a differential metric like Gaussian curvature. Extraction of all CAD-required parameters for quadric surface representation was completed. Approximate face boundaries derived from the original point c… more
Date: May 1, 2001
Creator: AMES,ARLO L.
Partner: UNT Libraries Government Documents Department
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