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open access

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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Combating Terrorism: Accountability Over Medical Supplies Needs Further Improvement

Description: Testimony issued by the General Accounting Office with an abstract that begins "This testimony discusses the status of agencies' efforts to establish effective internal control over federal medical stockpiles that can be used to treat civilian and military victims in the event of a chemical or biological attack. In earlier reports, GAO recommended that federal agencies strengthen their management of these medical stockpiles. GAO found that these agencies have made significant progress toward im… more
Date: May 1, 2001
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

JFMIP: Benefit System Requirements (Draft)

Description: Other written product issued by the General Accounting Office with an abstract that begins "GAO published a functional requirements document that provided high level functional requirements for benefits systems that will provide the capability for financial managers, program managers and others to control and account for federal benefit programs as defined in governmentwide and agency specific statutes, regulations, guidelines, and need assessments."
Date: May 1, 2001
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Strategies to Manage Improper Payments: Learning From Public and Private Sector Organizations (Exposure Draft) (Superseded by GAO-02-69G)

Description: Guidance issued by the General Accounting Office with an abstract that begins "This publication has been superseded by GAO-02-69G, Strategies to Manage Improper Payments: Learning From Public and Private Sector Organizations, October 2001. This executive guide is intended to identify effective practices and provide case illustrations and other information for federal agencies' consideration when developing strategies and planning and implementing actions to manage improper payments in their pro… more
Date: May 1, 2001
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Fiscal Year 2002 Budget Request for the Internal Revenue Service

Description: Correspondence issued by the General Accounting Office with an abstract that begins "For fiscal year 2002, Congress has before it two separate budget requests for the Internal Revenue Service (IRS)--the traditional request prepared by the administration and a separate request prepared by the IRS Oversight Board. There are some significant differences between the two requests. The administration is requesting about $9.4 billion while the Board is requesting an additional $300 million. This corre… more
Date: May 1, 2001
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

[Handwritten note from Scott Evertz to Charles Francis, May 1, 2001]

Description: A handwritten note from Scott Evertz to Charles C. Francis thanking him. The note reads "Dear Charles, You really are a a dear friend, excellent advisor, & true Texas gentleman. Thanks so much for your friendship & your counsel. All the best, Scott". It was written on White House stationery.
Date: May 1, 2001
Creator: Evertz, Scott
Item Type: Refine your search to only Letter
Partner: UNT Libraries Special Collections
open access

Are Topological Charge Fluctuations in QCD Instanton Dominated?

Description: We consider a recent proposal by Horvath et al. to address the question whether topological charge fluctuations in QCD are instanton dominated via the response of fermions using lattice fermions with exact chiral symmetry, the overlap fermions. Considering several volumes and lattice spacings we find strong evidence for chirality of a finite density of low-lying eigenvectors of the overlap-Dirac operator in the regions where these modes are peaked. This result suggests instanton dominance of to… more
Date: May 1, 2001
Creator: Edwards, Robert G. & Heller, Urs M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Small fatigue cracks: mechanics, mechanisms and engineering applications

Description: Damage-tolerant design and life-prediction methodologies have been practiced for metallic structures for decades, although their application to brittle materials, such as ceramics, and intermetallic alloys, still poses particular problems, primarily because of their extreme flaw-sensitivity.
Date: May 1, 2001
Creator: Ritchie, R. O. & Peters, J. O.
Item Type: Refine your search to only Article
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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

EFFECTS OF MINERALOGY, GRAIN SIZE, AND SOLUTION COMPOSITION ON LITHIUM SORPTION TO SATURATED ALLUVIUM SOUTH OF YUCCA MOUNTAIN, NEVADA

Description: Lithium is used frequently as a surrogate for cationic radionuclides such as NpO{sub 2}{sup +} in field and laboratory settings. Current plans include the use of Li{sup +} as a reactive tracer in field tracer testing in the saturated alluvium south of Yucca Mountain, NV, site of a potential high-level nuclear waste. Characterization of the alluvial material for grain size, mineralogy, cation exchange capacity (CEC), and surface area yields data that is compared with lithium batch sorption as a … more
Date: May 1, 2001
Creator: Sullivan, E. J.; Reimus, P. W. & Ding, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

SOME CHEMICAL SAFETY ASPECTS AT LANL

Description: Recently, the Department of Energy (DOE) and its contractors have begun activities to improve the quality and consistency of chemical safety programs throughout the DOE Complex. Several working groups have been formed to assemble a framework for systematically identifying and quantifying chemical hazards and managing chemical risks. At LANL, chemical safety program is implemented through Laboratory Implementation Requirements (LIRs), which are part of the Integrated Safety Management (ISM) plan… more
Date: May 1, 2001
Creator: LAUL, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A NEW INTERPHASE FORCE IN TWO-PHASE FLUIDIZED BEDS

Description: Mesoscale structures such as particle clusters have been observed both in experiments and in numerical simulations of circulating fluidized beds. In a numerical simulation, in order to account for the effects of such mesoscale structures, the computational grids have to be fine enough. The use of such fine grids is impractical in engineering applications due to excessive computational costs. To predict the macroscopic behavior of a fluidized bed with reasonable computation cost, they perform a … more
Date: May 1, 2001
Creator: ZHANG, D. & VANDERHEYDEN, W.
Item Type: Refine your search to only Article
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.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
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
Item Type: Refine your search to only Report
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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

STRUCTURAL HEALTH MONITORING OF WELDED CONNECTIONS

Description: Structural health monitoring is the implementation of a damage detection strategy for aerospace, civil and mechanical engineering infrastructure. Typical damage experienced by this infrastructure might be the development of fatigue cracks, degradation of structural connections, or bearing wear in rotating machinery. The goal of the research effort reported herein is to develop a robust and cost-effective monitoring system for welded beam-column connections in a moment resisting frame structure.… more
Date: May 1, 2001
Creator: SOHN, H.; FARRAR, C.; FUGATE, M. & CZARNECKI, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

VITRIFICATION SYSTEM FOR THE TREATMENT OF PLUTONIUM-BEARING WASTE AT LOS ALAMOS NATIONAL LABORATORY

Description: A glove box vitrification system is being fabricated to process aqueous evaporator bottom waste generated at the Plutonium Facility (TA-55) at Los Alamos National Laboratory (LANL). The system will be the first within the U.S. Department of Energy Complex to routinely convert Pu{sup 239}-bearing transuranic (TRU) waste to a glass matrix for eventual disposal at the Waste Isolation Pilot Plant (WIPP). Currently at LANL, this waste is solidified in Portland cement. Radionuclide loading in the cem… more
Date: May 1, 2001
Creator: NAKAOKA, R.; VEAZEY, G. & AL, ET
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Collisionless relaxation in beam-plasma systems

Description: This thesis reports the results from the theoretical investigations, both numerical and analytical, of collisionless relaxation phenomena in beam-plasma systems. Many results of this work can also be applied to other lossless systems of plasma physics, beam physics and astrophysics. Different aspects of the physics of collisionless relaxation and its modeling are addressed. A new theoretical framework, named Coupled Moment Equations (CME), is derived and used in numerical and analytical studies… more
Date: May 1, 2001
Creator: Backhaus, Ekaterina Yu.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

OVERVIEW OF PRESSURE VESSEL DESIGN CRITERIA FOR INTERNAL DETONATION (BLAST) LOADING

Description: Spherical and cylindrical pressure vessels are often used to completely contain the effects of high explosions. These vessels generally fall into two categories. The first includes vessels designed for multiple use ([1]-[6]). Applications of such multiple-use vessels include testing of explosive components and bomb disposal. Because of the multiple-use requirement, response of the vessel is restricted to the elastic range. The second category consists of vessels designed for one-time use only (… more
Date: May 1, 2001
Creator: DUFFEY, T. A. & RODRIGUEZ, E. A.
Item Type: Refine your search to only Article
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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Spin Physics at JLAB in the Resonance Region

Description: I will discuss recent results from Jefferson Lab on the measurement of inclusive spin structure functions in the nucleon resonance region using polarized ammonia NH{sub 3} and polarized {sup 3}He targets. Preliminary results on the first moment of g{_}1(x,Q{sup 2}) for protons, and the generalized Gerasimov-Drell-Hearn integral for neutrons are presented. In addition, first double polarization data on exclusive electroproduction of pi{sup +} for polarized protons will be discussed.
Date: May 1, 2001
Creator: Burkert, V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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