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Design of a proof of principle high current transport experiment

Description: Preliminary designs of an intense heavy-ion beam transport experiment to test issues for Heavy Ion Fusion (HIF) are presented. This transport channel will represent a single high current density beam at full driver scale and will evaluate practical issues such as aperture filling factors, electrons, halo, imperfect vacuum, etc., that cannot be fully tested using scaled experiments. Various machine configurations are evaluated in the context of the range of physics and technology issues that can… more
Date: January 15, 2000
Creator: Lund, S. M.; Bangerter, R. O.; Barnard, J. J.; Celata, C. M.; Faltens, A.; Friedman, A. et al.
Item Type: Refine your search to only Article
open access

Diesel Emission Control -- Sulfur Effects (DECSE) Program; Phase I Interim Data Report No. 4: Diesel Particulate Filters -- Final Report

Description: The Diesel Emission Control-Sulfur Effects (DECSE) is a joint government/industry program to determine the impact of diesel fuel sulfur levels on emission control systems whose use could lower emissions of nitrogen oxides (NOx) and particulate matter (PM) from on-highway trucks in the 2002--2004 model years. Phase 1 of the program was developed with the following objectives in mind: (1) evaluate the effects of varying the level of sulfur content in the fuel on the emission reduction performance… more
Date: January 15, 2000
Creator: DOE; ORNL; NREL; EMA & MECA
Item Type: Refine your search to only Report
open access

Direct Energy Conversion Fission Reactor September through November 1999

Description: OAK - B135 The initial kickoff meeting/brainstorming session was held as Albuquerque with the other participants in this study. The prompt critical pulse reactor was proposed at the brainstorming session. The other participants in this study, Sandia National Laboratories (lead), Los Alamos National Laboratory, University of Florida and Texas A and M University are separately funded and their work is separately reported. The combined reporting is done by Sandia.
Date: January 15, 2000
Creator: Brown, Lloyd C.
Item Type: Refine your search to only Report
open access

K-shell ionization and double-ionization of Au atoms with 1.33 MeV photons

Description: At relativistic energies, the cross section for the atomic photoelectric effect drops off as does the cross section for liberating any bound electron through Compton scattering. However, when the photon energy exceeds twice the rest mass of the electron, ionization may proceed via electron-positron pair creation. We used 1.33 MeV photons impinging on Au thin foils to study double K-shell ionization and vacuum-assisted photoionization. The preliminary results yield a ratio of vacuum-assisted pho… more
Date: January 15, 2000
Creator: Belkacem, A.; Dauvergne, D.; Feinberg, B.; Ionescu, D.; Maddi, J. & Sorensen, A.H.
Item Type: Refine your search to only Article
open access

Repair of DNA damaged by ionizing radiation and other oxidative agents in yeast and human

Description: OAK B202 Treatment of cells with oxidative DNA damaging agents such as ionizing radiation and hydrogen peroxide produces .OH radicals which attack DNA, producing single strand breaks and double strand breaks that have a 3'-blocked terminus with a phosphoglycolate or a phosphate group attached to the 3'-terminus. While DNA strand breaks with 3'-blocked termini are the hallmark of oxidative DNA damage, the mechanisms by which such blocked 3'-termini are removed in eukaryotes remain poorly underst… more
Date: January 15, 2000
Creator: Prakash, Louisek
Item Type: Refine your search to only Report
open access

Repair of DNA damaged by ionizing radiation and other oxidative agents in yeast and human

Description: Treatment of cells with oxidative DNA damaging agents such as ionizing radiation and hydrogen peroxide produces .OH radicals which attack DNA, producing single strand breaks and double strand breaks that have a 3'-blocked terminus with a phosphoglycolate or a phosphate group attached to the 3'-terminus. While DNA strand breaks with 3'-blocked termini are the hallmark of oxidative DNA damage, the mechanisms by which such blocked 3'-termini are removed in eukaryotes remain poorly understood. The … more
Date: January 15, 2000
Creator: Prakash, Louise
Item Type: Refine your search to only Report
open access

2000 Census: Status of Key Operations

Description: Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed its recent reports regarding the operational uncertainties of the status of the 2000 Census, focusing on: (1) achieving the Bureau of the Census' mail response rate objective; (2) collecting accurate and timely data from nonrespondents; and (3) conducting data capture operations."
Date: February 15, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
open access

Agricultural Research: USDA's Response to Recommendations to Strengthen the Agricultural Research Service's Programs and Facilities

Description: Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Department of Agriculture's (USDA) task force's recommendations to strengthen the Agricultural Research Service's (ARS) programs and facilities, focusing on: (1) the actions ARS has taken to close and consolidate laboratories; (2) the task force report's major recommendations designed to, among other things, improve operational efficiencies; and (3) ARS' rea… more
Date: February 15, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
open access

Analysis of Active Sensor Discrimination Requirements for Various Defense Missile Defense Scenarios Final Report 1999(99-ERD-080)

Description: During FY99, we have explored and analyzed a combined passive/active sensor concept to support the advanced discrimination requirements for various missile defense scenario. The idea is to combine multiple IR spectral channels with an imaging LIDAR (Light Detection and Ranging) behind a common optical system. The imaging LIDAR would itself consist of at least two channels; one at the fundamental laser wavelength (e.g., the 1.064 {micro}m for Nd:YAG) and one channel at the frequency doubled (at … more
Date: February 15, 2000
Creator: Ledebuhr, A.G.; Ng, L.C. & Gaughan, R.J.
Item Type: Refine your search to only Report
open access

CALIBRATION OF PHOTOELASTIC MODULATORS IN THE VACUUM UV.

Description: Measurements of circular dichroism (CD) in the UV and vacuum UV have used photoelastic modulators (PEMs) for high sensitivity (to about 10{sup -6}). While a simple technique for wavelength calibration of the PEMs has been used with good results, several features of these calibration curves have not been understood. The authors have calibrated a calcium fluoride PEM and a lithium fluoride PEM using the National Synchrotron Light Source (NSLS) at Brookhaven National Laboratory as a light source. … more
Date: February 15, 2000
Creator: Oakberg, T. C.; Trunk, J. & Sutherland, J. C.
Item Type: Refine your search to only Book
open access

Calibration Report for the WRAP Facility Gamma Energy Analysis System [104-ND-06-102A]

Description: The Waste Receiving And Processing facility (WRAP) adheres to providing gamma-ray spectroscopy instrument calibrations traceable to the National Institute for Standards and Technology (NIST) standards. The detectors are used to produce quantitative results for the Waste Isolation Pilot Plant (WIPP) and must meet calibration programmatic calibration goals. Instruments must meet portions of ANSI N42.14, 1978 guide for Germanium detectors. The Non-Destructive Assay (NDA) Gamma Energy Analysis (GEA… more
Date: February 15, 2000
Creator: Wills, C. E.
Item Type: Refine your search to only Report
open access

Dimensions and Measurements of Debuncher Band 1 and 2 Waveguide-Coax Launchers (Final Version)

Description: This note is a document about dimensions and measurement results of waveguide-coax launchers (Band 1 and 2) installed on the arrays in debuncher cooling upgrade. Shown in Figure 1, 5, 8 and 12 are schematic drawings of launchers in the cross section along the longitudinal direction (beam direction) of the arrays. The unit in these drawings is inch. Note: although there are upper band and lower band for pickup arrays, the launchers are the same to avoid possible confusion during installation. RF… more
Date: February 15, 2000
Creator: Sun, Ding
Item Type: Refine your search to only Report
open access

Drug Abuse Treatment: Efforts Under Way to Determine Effectiveness of State Programs

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the efforts by the Substance Abuse and Mental Health Services Administration (SAMHSA) and states to provide effective drug abuse treatment programs, focusing on: (1) activities supported by SAMHSA's Substance Abuse Prevention and Treatment (SAPT) block grant and Knowledge Development and Application (KDA) grant funds for drug abuse treatment; (2) SAMHSA and sta… more
Date: February 15, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
open access

Effective File I/O Bandwidth Benchmark

Description: The effective I/O bandwidth benchmark (b{_}eff{_}io) covers two goals: (1) to achieve a characteristic average number for the I/O bandwidth achievable with parallel MPI-I/O applications, and (2) to get detailed information about several access patterns and buffer lengths. The benchmark examines ''first write'', ''rewrite'' and ''read'' access, strided (individual and shared pointers) and segmented collective patterns on one file per application and non-collective access to one file per process.… more
Date: February 15, 2000
Creator: Rabenseifner, R. & Koniges, A. E.
Item Type: Refine your search to only Article
open access

Electron-gun-controlled thin film mirrors for remote sensing applications

Description: The ultimate limitation in obtainable resolution and sensitivity for space-based imaging systems is the size of the optical collecting aperture. Large collecting apertures are at odds with maintaining low launch costs and with current launch vehicle configurations. Development of a deployable mirror is one approach being considered to satisfy these conflicting requirements. The focus of this research is to develop fundamental technology toward the realization of deployable electron-gun-controll… more
Date: February 15, 2000
Creator: HENSON,TAMMY D.; REDMOND,JAMES M.; WEHLBURG,JOSEPH C.; MARTIN,JEFFREY W. & MAIN,JOHN A.
Item Type: Refine your search to only Article
open access

Final technical report: analysis of molecular data using statistical and evolutionary approaches

Description: This document describes the research and training accomplishments of Dr. Kevin Atteson during the DOE fellowship period of September 1997 to September 1999. Dr. Atteson received training in molecular evolution during this period and made progress on seven research topics including: computation of DNA pattern probability, asymptotic redundancy of Bayes rules, performance of neighbor-joining evolutionary tree estimation, convex evolutionary tree estimation, identifiability of trees under mixed ra… more
Date: February 15, 2000
Creator: Atteson, K. & Kim, Junhyong
Item Type: Refine your search to only Report
open access

Financial Management Review of the U.S. Fish and Wildlife Service's Reported Allocation of Resources for its Refuge Program and New Assistant Regional Manager Positions

Description: Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on its financial management review of the Fish and Wildlife Service's (FWS) reported allocation of resources for its Refuge Program and New Assistant Regional Manager Positions, focusing on: (1) what systems FWS used to track how allocated funds were spent and to determine the full costs of operating the refuge program; (2) how much funding the servi… more
Date: February 15, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
open access

Fish and Wildlife Service: Agency Needs to Inform Congress of Future Costs Associated With Land Acquisitions

Description: Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed its recent report on how the Fish and Wildlife Service (FWS) decides to establish and expand refuges, focusing on: (1) the financial effect of establishing refuges by means other than appropriations; and (2) differences in the priority-setting processes for acquiring land using the land and water and migratory bird funds."
Date: February 15, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
open access

Fish and Wildlife Service: Agency Needs to Inform Congress of Future Costs Associated With Land Acquisitions

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on whether the Fish and Wildlife Service (FWS) established any refuge with migratory bird funds after Congress denied appropriations from land and water funds for a proposed refuge, focusing on: (1) which funds--land and water funds or migratory bird funds--FWS used to establish and expand refuges during this period; (2) how FWS set priorities for a… more
Date: February 15, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
open access

Forest Service Planning: Better Integration of Broad-Scale Assessments Into Forest Plans Is Needed

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Forest Service's ecosystem planning efforts, including the Great Lakes Ecological Assessment, focusing on the: (1) views of the Forest Service, other federal agencies, and GAO on key elements that broad-scale ecosystem based assessments should contain to maximize their value to the forest planning process; (2) extent to which the Forest Service has incorpor… more
Date: February 15, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
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