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Environmental Protection: EPA Should Strengthen Its Efforts to Measure and Encourage Pollution Prevention

Description: A chapter report issued by the General Accounting Office with an abstract that begins "Limited quantitative data exists on the extent to which American industry has sought to use pollution prevention methods to reduce pollutants discharged from its facilities. This shortcoming has inhibited the Environmental Protection Agency's (EPA) efforts to monitor and encourage companies' use of pollution prevention measures. Whether to undertake pollution prevention is typically a business decision that i… more
Date: February 21, 2001
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Surface Dynamics during Environmental Degradation of Crystal Surfaces

Description: Using in situ optical microscopy and scattering measurements, we have followed the evolution of surface morphology during etching and measured surface etching rates as a function of humidity and undersaturation. From our experiments to date we have developed the following picture of etch pit formation on KDP crystal surfaces. Pit formation is characterized by a nucleation and growth process: the introduction of water creates a condition of undersaturation at the crystal surface. The equilibrium… more
Date: February 21, 2001
Creator: Whitman, P; DeYoreo, J; Land, T; Miller, E; Suratwala, T; Thorsness, C et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Printed wiring board fabrication and lead elimination via single-bath electrodeposition

Description: Printed wiring board (PWB) fabrication, an operation performed both at LLNL and throughout the electronics industry, generates considerable quantities of hazardous waste, notably lead-bearing materials used for soldering, tinning, and finish coating the circuits of the board. Hot-air solder leveling (HASL), the most common method of finishing is one of the main sources of hazardous lead-bearing wastes in traditional PWB manufacturing. The development of a safer finishing method will lead to emp… more
Date: February 21, 2001
Creator: Meltzer, M P & Steffani, C P
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Superconducting Detector System for High-Resolution Energy-Dispersive Soft X-Ray Spectroscopy

Description: Synchrotron-based soft x-ray spectroscopy is often limited by detector performance. Grating spectrometers have the resolution, but lack the efficiency for the analysis of dilute samples. Semiconducting Si(Li) or Ge detectors are efficient, but often lack the resolution to separate weak signals from strong nearby lines in multi-element samples. Superconducting tunnel junctions (STJs) operated at temperatures below 1 K can be used as high-resolution high-efficiency x-ray detectors. They combine h… more
Date: February 21, 2001
Creator: Friedrich, S; Niedermayr, T; Drury, O; Funk, T; Frank, M; Labov, S E et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modeling of Laser Induced Damage in NIF UV Optics

Description: Controlling damage to nominally transparent optical elements such as lenses, windows and frequency conversion crystals on high power lasers is a continuing technical problem. Scientific understanding of the underlying mechanisms of laser energy absorption, material heating and vaporization and resultant mechanical damage is especially important for UV lasers with large apertures such as NIF. This LDRD project was a single year effort, in coordination with associated experimental projects, to in… more
Date: February 21, 2001
Creator: Feit, M D & Rubenchik, A M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced Wavefront Control Techniques

Description: Programs at LLNL that involve large laser systems--ranging from the National Ignition Facility to new tactical laser weapons--depend on the maintenance of laser beam quality through precise control of the optical wavefront. This can be accomplished using adaptive optics, which compensate for time-varying aberrations that are often caused by heating in a high-power laser system. Over the past two decades, LLNL has developed a broad capability in adaptive optics technology for both laser beam con… more
Date: February 21, 2001
Creator: Olivier, S. S.; Brase, J. M.; Avicola, K.; Thompson, C. A.; Kartz, M. W.; Winters, S. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Last Tractor]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story about tractors.
Date: February 21, 2001, 5:00 p.m.
Duration: 47 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Evaluation of Stainless Steels for Primary Surface Recuperator Applications

Description: In 1996, a Cooperative Research and Development Agreement (CRADA) was undertaken between the Oak Ridge National Laboratory (ORNL) and Solar Turbines Incorporated to develop improved stainless steels for gas turbine recuperator applications. A team was assembled that consisted of materials and fabrication specialists from ORNL, Solar Turbines, Allegheny Ludlum Research Laboratory, and the University of California-San Diego. The development strategy was to (1) identify the materials performance r… more
Date: February 21, 2001
Creator: Swindeman, R.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

PROCEEDINGS OF RIKEN BNL RESEARCH CENTER WORKSHOP, RHIC SPIN PHYSICS V, VOLUME 32, FEBRUARY 21, 2001.

Description: The RIKEN BNL Research Center (RBRC) was established in April 1997 at Brookhaven National Laboratory. It is funded by the ''Rikagaku Kenkysho'' (RIKEN, The Institute of Physical and Chemical Research) of Japan. The Center is dedicated to the study of strong interactions, including spin physics, lattice QCD and RHIC physics through the nurturing of a new generation of young physicists. During the fast year, the Center had only a Theory Group. In the second year, an Experimental Group was also es… more
Date: February 21, 2001
Creator: Bunce, G.; Saito, N.; Vigdor, S.; Roser, T.; Spinka, H.; Enyo, H. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Performance Assessment of the Waste Dislodging Conveyance System During the Gunite And Associated Tanks Remediation Project

Description: The Waste Dislodging and Conveyance System (WD and CS) and other components of the Tank Waste Retrieval System (TWRS) were developed to address the need for removal of hazardous wastes from underground storage tanks (USTs) in which radiation levels and access limitations make traditional waste retrieval methods impractical. Specifically, these systems were developed for cleanup of the Gunite and Associated Tanks (GAAT) Operable Unit (OU) at the Oak Ridge National Laboratory (ORNL). The WD and C… more
Date: February 21, 2001
Creator: Lloyd, P.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Ground-Coupled Heat and Moisture Transfer from Buildings; Part 2: Application (Preprint)

Description: In this paper the effects of moisture on the heat transfer from two basic types of building foundations, a slab-on-grade and a basement, are examined. A two-dimensional finite element heat and moisture transfer program is used to show the effects of precipitation, soil type, foundation insulation, water table depth, and freezing on the heat transfer from the building foundation. Comparisons are made with a simple heat conduction model to illustrate the dependency of the soil thermal conductivit… more
Date: February 21, 2001
Creator: Deru, M. P. & Kirkpatrick, A. T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

U.S. Department of Energy Photovoltaic Energy Program Contract Summary: Fiscal Year 2000

Description: This report summarizes the in-house and subcontracted research and development (R and D) activities under the National Center for Photovoltaics (NCPV) and U.S. Department of Energy (DOE) National Photovoltaics Program from October 1, 1999, through September 30, 2000 (FY 2000). The mission of the DOE National Photovoltaics Program is to make PV a significant part of the domestic economy-as an industry and an energy resource. The two primary goals of the national program are to (1) maintain the U… more
Date: February 21, 2001
Creator: Surek, T.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

A Guidebook to the U.S. Department of Energy's Alternative Fuel Transportation Program for State and Alternative Fuel Provider Fleets

Description: The country's increasing dependence on imported oil and the relative instability of the oil-producing countries prompted Congress to pass the Energy Policy Act (EPAct) of 1992. The Act called on the US Department of Energy (DOE) to expand research and development in the transportation sector, and to create programs for accelerating the introduction of alternative fueled vehicles (AFVs) to replace conventional models fueled by gasoline. DOE's Alternative Fuel Transportation Program, as codified … more
Date: February 21, 2001
Creator: Melendez, M.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

Restored Drill Cuttings for Wetlands Creation: Results of Mesocosm Approach to Emulate Field Conditions Under Varying Salinity and Hydrologic Conditions

Description: This study builds upon earlier research conducted by Southeastern Louisiana University concerning the efficacy of utilizing processed drill cuttings as an alternative substrate source for wetland rehabilitation (wetland creation and restoration). Previous research has indicated that processed drill cuttings exhibit a low degree of contaminant migration from the process drill cuttings to interstitial water and low toxicity, as tested by seven-day mysid shrimp chronic toxicity trials.
Date: February 21, 2001
Creator: Hester, Mark W.; Shaffer, Gary P.; M., Willis Jonathan & DesRoches, Dennis J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Behavior of Dense, Immiscible Solvents in Fractured Clay-rich Soils - Final Report - 09/10/1996 - 09/14/2000

Description: This project investigated the behavior of chlorinated solvent DNAPLs (mainly TCE) in two fractured clay-rich materials: highly weathered shale saprolite; and weathered glacial till. Over the 4-year course of this project researchers: (1) Investigated the potential for biodegradation of chlorinated solvents in fractured and weathered shales and in microcosms and undisturbed columns of fractured shale saprolite, which indicates that anaerobic degradation of TCE and its daughter products is occurr… more
Date: February 21, 2001
Creator: McKay, Larry D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Restored Drill Cuttings for Wetlands Creation: Year One Results of a Mesocosm Approach to Emulate Field Conditions Under Varying Hydrologic Regimes

Description: The purpose of this study was to demonstrate that restored drill cuttings, a byproduct of the petroleum industry, can be safely used in coastal as well as inland wetland restoration projects. Prior to conducting laboratory experiments, composite soil samples of the recycled sediments were analyzed for pH and heavy metal concentrations.
Date: February 21, 2001
Creator: Shaffer, Gary P.; W., Hester Mark; Greene, Michael C. & W., Childers Gary
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Waste Form Release Calculations for the 2001 Immobilized Low-Activity Waste Performance Assessment

Description: A set of reactive chemical transport calculations was conducted with the Subsurface Trans-port Over Reactive Multiphases (STORM) code to evaluate the long-term performance of a representative low-activity waste glass in a shallow subsurface disposal system located on the Hanford Site. 1-D simulations were conducted out to times in excess of 20,000 y. A 2-D simulation was run to 2,000 y. The maximum normalized, decay-corrected Tc release rate from a trench type conceptual design under a constant… more
Date: February 21, 2001
Creator: Bacon, Diana H & McGrail, Bernard P
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Always Pasty Cline]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story about the Grand Ole Opry.
Date: February 21, 2001, 4:00 p.m.
Duration: 1 minute 22 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Forest Ecosystem Health: An Overview

Description: Legislative and administrative efforts have generally focused on the national forests, to create new forest health programs and management tools or to authorize alternative treatment approaches. This report will be updated as events warrant.
Date: February 21, 2001
Creator: Gorte, Ross W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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