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Current directions in screening-level ecological risk assessments

Description: Ecological risk assessment (ERA) is a tool used by many regulatory agencies to evaluate the impact to ecological receptors from changes in environmental conditions. Widespread use of ERAs began with the United States Environmental Protection Agency's Superfund program to assess the ecological impact from hazardous chemicals released to the environment. Many state hazardous chemical regulatory agencies have adopted the use of ERAs, and several state regulatory agencies are evaluating the use of … more
Date: December 11, 2000
Creator: Carlsen, T M & Efroymson, R A
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Decision Document for the Storm Water Outfalls/Industrial Wastewater Treatment Plant, Pesticide Rinse Area, Old Fire Fighting Training Pit, Illicit PCB Dump Site, and the Battery Acid Pit Fort Lewis, Washington

Description: PNNL conducted independent site evaluations for four sites at Fort Lewis, Washington, to determine their suitability for closure on behalf of the installation. These sites were recommended for "No Further Action" by previous invesitgators and included the Storm Water Outfalls/Industrial Waste Water Treatment Plant (IWTP), the Pesticide Rinse Area, the Old Fire Fighting Training Pit, and the Illicit PCB Dump Site.
Date: December 11, 2000
Creator: Cantrell, Kirk J.; Liikala, Terry L.; Strenge, Dennis L. & Taira, Randal Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Variations on supersymmetry breaking and neutrino spectra

Description: The problem of generating light neutrinos within supersymmetric models is discussed. It is shown that the hierarchy of scales induced by supersymmetry breaking can give rise to suppression factors of the correct order of magnitude to produce experimentally allowed neutrino spectra.
Date: December 11, 2000
Creator: Borzumati, F.; Hamaguchi, K.; Nomura, Y. & Yanagida, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

User guide for modeling of electroconsolidation process with ELEKTRA and MaPS codes.

Description: Electroconsolidation{reg_sign} is a proprietary process for rapid, pressure-assisted densification of powder preforms. The parts to be consolidated are placed within a bed of free-flowing powder, and pressure is applied by rams that act on the powder medium. Heat for consolidation is generated internally by electrical resistive heating of the medium while it is in direct contact with the preform(s). A mathematical model has been developed to predict the temperature profiles within the Electroco… more
Date: December 11, 2000
Creator: Chang, F. C.; Domanus, H. M. & Valentin, R. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Plutonium Finishing Plant (PFP) Waste Composition and High Efficiency Particulate Air Filter Loading

Description: This analysis evaluates the effect of the Plutonium Finishing Plant (PFP) waste isotopic composition on Tank Farms Final Safety Analysis Report (FSAR) accidents involving high-efficiency particulate air (HEPA) filter failure in Double-Contained Receiver Tanks (DCRTs). The HEPA Filter Failure--Exposure to High Temperature or Pressure, and Steam Intrusion From Interfacing Systems accidents are considered. The analysis concludes that dose consequences based on the PFP waste isotopic composition ar… more
Date: December 11, 2000
Creator: ZIMMERMAN, B.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Health Watch]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 11, 2000, 10:00 p.m.
Duration: 1 minute 38 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Differences in Bulk Damage Probability Distributions Between Tripler and Z-Cuts of KDP and DKDP at 355 nm

Description: Over the course of testing a substantial number of KDP and DKDP crystals from rapid and conventional growth processes, we have discovered that there is a consistent difference in the value of the damage resistance between z-cut and tripler, x-cut and y-cut crystals for a given test fluence. This increase in damage probability for tripler, x and y-cut crystals is consistent for both conventional and rapid growth KDP as well as DKDP. It also holds for unconditioned (S/1) and conditioned (R/l) tes… more
Date: December 11, 2000
Creator: Runkel, M & Burnham, A K
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Results of Pulse-Scaling Experiments on Rapid-Growth DKDP Triplers Using the Optical Sciences Laser at 351 nm

Description: Results are reported from recently performed bulk-damage, pulse-scaling experiments on DKDP tripler samples taken from NIF-size, rapid-growth boule BD7. The tests were performed on LLNL's Optical Sciences Laser. A matrix of samples was exposed to single shots at 351 mn (3 {omega}) with average fluences from 4 to 8 J/cm{sup 2} for pulse durations of 1, 3 and 10 ns. The damage sites were scatter-mapped after testing to determine the damage evolution as a function of local beam fluence. The averag… more
Date: December 11, 2000
Creator: Runkel, M; Burnham, A K; Milam, D; Sell, W; Feit, M & Rubenchik, A
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Laser conditioning characterization and damage threshold prediction of hafnia/silica multilayer mirrors by photothermal microscopy

Description: Laser conditioning has been shown to improve the laser damage threshold of some optical coatings by greater than 2x. Debate continues within the damage community regarding laser-conditioning mechanisms, but it is clear that nodular ejection is one of the byproducts of the laser conditioning process. To better understand why laser conditioning is so effective, photothermal microscopy was used to measure absorption of coating defects before and after laser exposure. Although a modest absorption r… more
Date: December 11, 2000
Creator: Papandrew, A B; Stolz, C J; Wu, Z L; Loomis, G E & Falabella, S
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

IMPACT, a Coupled Tropospheric/Stratospheric Chemistry Model: Analysis and Comparison of Results to Observations

Description: We have conducted multi-year simulations describing the distributions of important chemical species in both the troposphere and stratosphere using the LLNL IMPACT atmospheric chemistry model. Simulations have been completed using input meteorological data from both a general circulation model (NCAR MACCM3, Middle Atmospheric Community Climate Model Version 3) and analyzed fields (NASA Data Assimilation Office, STRATF product). IMPACT includes modules describing tropospheric and stratospheric pr… more
Date: December 11, 2000
Creator: Rotman, D.; Atherton, C.; Bergmann, D.; Cameron-Smith, P.; Chuang, C.; Connell, P. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of Thermal Annealing and Second Harmonic Generation on Bulk Damage Performance of Rapid-Growth KDP Type I Doublers at 1064 nm

Description: This paper discusses the results of thermal annealing and in-situ second harmonic generation (SHG) damage tests performed on six rapid growth KDP type 1 doubler crystals at 1064 nm (1 {omega}) on the Zeus automated damage test facility. Unconditioned (S/1) and conditioned (R/1) damage probability tests were performed before and after thermal annealing, then with and without SHG on six doubler crystals from the NIF-size, rapid growth KDP boule F6. The tests revealed that unannealed, last-grown m… more
Date: December 11, 2000
Creator: Runkel, M.; Maricle, S.; Torres, R.; Auerbach, J.; Floyd, R.; Hawley-Fedder, R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

High Sensitivity Measurement of Implanted as in the Presence of Ge in Ge(x)Si(1-x)/Si Layered Alloys Using Trace Element Accelerator Mass Spectrometry

Description: This article discusses high sensitivity measurement of implanted As in the presence of Ge in Ge(x)Si(1-x)/Si layered alloys using trace element accelerator mass spectrometry.
Date: December 11, 2000
Creator: Datar, Sameer A.; Wu, Liying; Guo, Baonian N.; Nigam, Mohit; Necsoiu, Daniela; Zhai, Y. J. et al.
Item Type: Refine your search to only Article
Partner: UNT College of Arts and Sciences
open access

NATURAL RESOURCES ASSESSMENT

Description: The purpose of this report is to summarize the scientific work that was performed to evaluate and assess the occurrence and economic potential of natural resources within the geologic setting of the Yucca Mountain area. The extent of the regional areas of investigation for each commodity differs and those areas are described in more detail in the major subsections of this report. Natural resource assessments have focused on an area defined as the ''conceptual controlled area'' because of the re… more
Date: December 11, 2000
Creator: Fenster, D.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Heavy Vehicle Propulsion System Materials Program Semiannual Progress Report for April 2000 Through September 2000

Description: The purpose of the Heavy Vehicle Propulsion System Materials Program is the development of materials: ceramics, intermetallics, metal alloys, and metal and ceramic coatings, to support the dieselization of class 1-3 trucks to realize a 35% fuel-economy improvement over current gasoline-fueled trucks and to support commercialization of fuel-flexible LE-55 low-emissions, high-efficiency diesel engines for class 7-8 trucks. The Office of Transportation Technologies, Office of Heavy Vehicle Technol… more
Date: December 11, 2000
Creator: Johnson, D. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

PBX 9501 Outgas Analysis by SPME/GC/MS

Description: The authors used equilibrium headspace gas chromatography/mass spectrometry (GC/MS) to monitor volatile and semivolate species that are expected to migrate through PBX 9501 under environmentally relevant conditions. In this work they screened 11 samples taken from deployed parts. Although a number of chemical permeates were identified, the antioxidant signature provided the most information with regard to decomposition aging. Specifically, they were able to monitor butylated hydroxytoluene (BHT… more
Date: December 11, 2000
Creator: Chambers, D.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Campaign Finance: Constitutional and Legal Issues of Soft Money

Description: As in the 105th Congress, many of the 106th Congress bills focus on political party soft money--subjecting contributions, expenditures, or transfers of national political parties to the limitations, prohibitions and reporting requirements of the FECA. Other bills would restrict corporate and labor union soft money. Another major reform proposal would subject certain types of advocacy communications to FECA regulation, either fully or just insofar as disclosure requirements.
Date: December 11, 2000
Creator: Whitaker, L. Paige
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental Protection: New Approaches

Description: This report summarizes briefly a number of "new approaches," grouped under the following categories: Information: Approaches to improve the quantity and quality of information to enhance the knowledge base underlying environ- mental decisions (e.g., risk assessment, cost-benefit analysis).Public Sector Processes: Approaches to restructure governmental processes for making environmental decisions (e.g., devolution). Incentives: Approaches that emphasize incentives as opposed to regulatory or fin… more
Date: December 11, 2000
Creator: Blodgett, John E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Patent Ownership and Federal Research and Development (R and D): A Discussion on the Bayh-Dole Act and the Stevenson-Wydler Act

Description: Two major laws govern the dispensation of patents associated with federal research and development (R&D) activities. Both P.L. 96-418, the Stevenson-Wydler Technology Innovation Act, as amended, and P.L. 96-517, Amendments to the Patent and Trademark Act (commonly referred to as "Bayh-Dole" after its two main sponsors, former Senators Birch Bayh and Robert Dole), are the foundation for efforts to utilize patent ownership to encourage the commercialization of technologies and techniques that hav… more
Date: December 11, 2000
Creator: Schacht, Wendy H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Wind Power Plant Evaluation Naval Auxiliary Landing Field, San Clemente Island, California: Period of Performance 24 September 1999--15 December 2000

Description: The purpose of this report is to evaluate the wind power benefits and impacts to the San Clement Island wind power system, including energy savings, emissions reduction, system stability, and decreased naval dependence on fossil fuel at the island. The primary goal of the SCI wind power system has been to operate with the existing diesel power plant and provide equivalent or better power quality and system reliability than the existing diesel system. The wind system is intended to reduce, as fa… more
Date: December 11, 2000
Creator: Olsen, T. L.; Gulman, P. J. & McKenna, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preface : the 2000 ethanol vehicle challenge.

Description: The technical papers presented in this special publication represent the efforts of students from 16 colleges and universities across North America. Over 600 students have participated in the Ethanol Vehicle Challenge since its inception in 1998. The 2000 Ethanol Vehicle Challenge was the final year of this successful 3-year advanced vehicle competition series. The papers presented are enhanced and expanded versions of those prepared in advance of the competition by the participating student en… more
Date: December 11, 2000
Creator: LeBlanc, N. M. & Larsen, R. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

2000 Annual Progress Report for Fuels for Advanced CIDI Engines and Fuel Cells

Description: The Department of Energy's Office of Transportation Technologies Fiscal Year (FY) 2000 Annual Progress Report for the Fuels for Advanced CIDI Engines and Fuel Cells Program highlights progress achieved during FY 2000 and comprises 22 summaries of industry and National Laboratory projects that were conducted. The report provides an overview of the exciting work being conducted to tackle the tough technical challenges associated with developing clean burning fuels that will enable meeting the per… more
Date: December 11, 2000
Creator: Chalk, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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