26 Matching Results

Search Results

Results: 1 - 24 next
open access

Kosovo Air Operations: Combat Aircraft Basing Plans Are Needed in Advance of Future Conflicts

Description: A letter report issued by the General Accounting Office with an abstract that begins "Following the failure of peace talks and escalating violence against ethnic Albanians in Kosovo, the United States provided military support to the North Atlantic Treaty Organization (NATO) combat operations against Yugoslavia in March 1999. This report reviews how well the United States was prepared for basing its combat aircraft during this operation, called Operation Allied Force. Specifically, GAO determi… more
Date: May 29, 2001
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

D0 Silicon Strip Detector Upgrade Project SVX Sequencer Controller Board

Description: The Sequencer Controller boards are 9U by 340mm circuit boards that will reside in slot 1 of each of eight Sequencer crates in the D0 detector platform. The primary purpose is to control the Sequencers during data acquisition based on trigger information from the D0 Trigger Framework. Functions and features are as follows: (1) Receives the Serial Command Link (SCL) from the D0 Trigger System and controls the operation of the Sequencers by forming a custom serial control link (NRZ/Clock) which i… more
Date: May 29, 2001
Creator: Utes, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Clinical trials of boron neutron capture therapy [in humans] [at Beth Israel Deaconess Medical Center][at Brookhaven National Laboratory]

Description: Assessment of research records of Boron Neutron Capture Therapy was conducted at Brookhaven National Laboratory and Beth Israel Deaconess Medical Center using the Code of Federal Regulations, FDA Regulations and Good Clinical Practice Guidelines. Clinical data were collected from subjects' research charts, and differences in conduct of studies at both centers were examined. Records maintained at Brookhaven National Laboratory were not in compliance with regulatory standards. Beth Israel's recor… more
Date: May 29, 2001
Creator: Wallace, Christine
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Cleburne rapist Pkg]

Description: Video footage from the KXAS-TV/NBC 5 television station in Fort Worth, Texas, covering a news story.
Date: May 29, 2001, 10:00 p.m.
Duration: 1 minute 43 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Cookoff Response of PBXN-109: Material Characterization and ALE3D Thermal Predictions

Description: Materials properties measurements are made for the RDX-based explosive, PBXN-109, and initial ALE3D model predictions are given for the cookoff temperature in a U.S. Navy test. This work is part of an effort in the U.S. Navy and Department of Energy (DOE) laboratories to understand the thermal explosion behavior of this material. Benchmark cookoff experiments are being performed by the U.S. Navy to validate DOE materials models and computer codes. The ALE3D computer code can model the coupled t… more
Date: May 29, 2001
Creator: McClelland, M A; Tran, T D; Cunningham, B J; Weese, R K & Maienschein, J L
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Iraq: Compliance, Sanctions, and U.S. Policy

Description: This report includes information regarding Iraq, specifically compliance, sanctions, and U.S. policy. Weapons of mass destruction, human rights, and Iraqi issues with Kuwait are among topics discussed in this report.
Date: May 29, 2001
Creator: Katzman, Kenneth
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of Shock-Induced Chemical Reactions in Mo-Si Powder Mixtures Using Instrumented Experiments with PVDF Stress Gauges

Description: Shock-induced chemical reactions in {approx}58% dense Mo+2Si powder mixtures were investigated using time-resolved instrumented experiments, employing PVDF-piezoelectric stress gauges placed at the front and rear surfaces of the powders to measure the input and propagated stresses, and wave speed through the powder mixture. Experiments performed on the powders at input stresses less than 4 GPa, showed characteristics of powder densification and dispersed propagated wave stress profiles with ris… more
Date: May 29, 2001
Creator: Vandersall, K S & Thadhani, N N
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

An Algorithm for Projecting Points onto a Patched CAD Model

Description: We are interested in building structured overlapping grids for geometries defined by computer-aided-design (CAD) packages. Geometric information defining the boundary surfaces of a computation domain is often provided in the form of a collection of possibly hundreds of trimmed patches. The first step in building an overlapping volume grid on such a geometry is to build overlapping surface grids. A surface grid is typically built using hyperbolic grid generation; starting from a curve on the sur… more
Date: May 29, 2001
Creator: Henshaw, W D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Fracture imaging with converted elastic waves

Description: This paper examines the seismic signatures of discrete, finite-length fractures, and outlines an approach for elastic, prestack reverse-time imaging of discrete fractures. The results of this study highlight the importance of incorporating fracture-generated P-S converted waves into the imaging method, and presents an alternate imaging condition that can be used in elastic reverse-time imaging when a direct wave is recorded (e.g., for crosswell and VSP acquisition geometries).
Date: May 29, 2001
Creator: Nihei, K.T.; Nakagawa, S. & Myer, L.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Tritiated-Water Detector with U-232/Th-228 Source

Description: The detection capabilities of the new U-232/Th-228 source are comparable to those of the Na-24 source. The main benefit in using the new source is the ease of operation. Elimination of the neutron activation step required for Na-24 sources saves about 24 hours in planning, scheduling, and executing. With the new U-232/Th-228 source, the monitor can be put in operation in less than 15 minutes. The long half-life of the U-232/Th-228 source also eliminates the need to record calibration and measur… more
Date: May 29, 2001
Creator: Baumann, N.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Simple, Inexpensive in Situ Method for Assessing Acute Toxicity of Effluents to Fish

Description: Test chambers for conducting in situ fish bioassays were constructed from 8L polyethylene bottles. Yearling fathead minnows (Pimephales promelas) and young-of-the-year bluegill (Lepomis macrochirus) demonstrated greater than 50 percent survival in the chambers after 65 days of exposure in a reservoir, river, and creek. Fathead minnow survival was substantially greater than that of bluegills. The chambers provide a simple, inexpensive, sensitive technique to screen effluents for toxicity.
Date: May 29, 2001
Creator: Wilde, E.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Determination of Free Acid by Standard Addition with Potassium Thiocyanate as Complexant

Description: A method is described for determination of free acid in solutions containing the hydrolyzable ions Al (III), Cr(III), Fe(III), Hg(II), Ni(II), Th(IV), and U(VI). The concentration of the sample is calculated either by solving three simultaneous Nernst equations, by the Gran plot procedure, or by means of a microprocessor pH meter. Molar concentrations of metal ion up to 2.5 times that of the acid can be tolerated. The method has been applied to analysis of nuclear processing solutions that cont… more
Date: May 29, 2001
Creator: Baumann, E. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

High Current Density YBCO Coated Conductors On Strengthened Biaxially Textured Ni-W Substrates

Description: High current density YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) films were fabricated on rolling-assisted biaxially textured substrates (RABiTS) with a layer sequence of CeO{sub 2}/YSZ/(dip-coated or e-beam seed)/Ni-W (3 at. %). Electron-beam evaporation was used to deposit Y{sub 2}O{sub 3} seed layers. A reel-to-reel continuous dip-coating unit was used to deposit Gd{sub 2}O{sub 3} and La{sub 2}Zr{sub 2}O{sub 7} (LZO) seed layers. Scanning Auger Microprobe analysis of the textured Ni-W substra… more
Date: May 29, 2001
Creator: Paranthaman, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Design of a Pu-238 Waste Incineration Process

Description: Combustible Pu-238 waste is generated as a result of normal operation and decommissioning activity at the Savannah River Plant and is being retrievably stored there. As part of the long-term plan to process the stored waste and current waste in preparation for future disposition, a Pu-238 incineration process is being cold-tested at Savannah River Laboratory (SRL). The incineration process consists of a continuous-feed preparation system, a two-stage, electrically fired incinerator, and a filtr… more
Date: May 29, 2001
Creator: Charlesworth, D.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The Dry Deposition of Particulate Matter Above a Loblolly Pine Plantation

Description: The concentration and type of particulate matter found in the atmosphere varies among localities. Like the transport of water vapor, heat, and momentum, the movement of small particles through the boundary layer above a plant canopy is controlled by eddy diffusion. This paper describes data collection design, transport theory, and an analysis of the data collected.
Date: May 29, 2001
Creator: Lorenz, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Investigation of Multiscale and Multiphase Flow, Transport and Reaction in Heavy Oil Recovery Processes

Description: This report is an investigation of various multi-phase and multiscale transport and reaction processes associated with heavy oil recovery. The thrust areas of the project include the following: Internal drives, vapor-liquid flows, combustion and reaction processes, fluid displacements and the effect of instabilities and heterogeneities and the flow of fluids with yield stress. These find respective applications in foamy oils, the evolution of dissolved gas, internal steam drives, the mechanics … more
Date: May 29, 2001
Creator: Yortsos, Y. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Yellowstone as an Analog for Thermal-Hydrological-Chemical Processes at Yucca Mountain

Description: Enhanced water-rock interaction resulting from the emplacement of heat-generating nuclear waste in the potential geologic repository at Yucca Mountain, Nevada, may result in changes to fluid flow (resulting from mineral dissolution and precipitation in condensation and boiling zones, respectively). Studies of water-rock interaction in active and fossil geothermal systems (natural analogs) provide evidence for changes in permeability and porosity resulting from thermal-hydrological-chemical (THC… more
Date: May 29, 2001
Creator: Dobson, P. F.; Kneafsey, T. J.; Simmons, A. & Hulen, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Review of Applications of Mass Spectrometry to Low Level Radionuclide Metrology

Description: Current capabilities of mass spectrometry for analysis of selected environmental radionuclides as well as projected developments for the near future are summarized in this paper. Comparisons of cost, sensitivity and accuracy (with a particular emphasis on sensitivity) are made for those radionuclides of most interest to environmental studies and for those most likely to lend themselves to mass spectrometric analysis. In some cases where there are presently no mass spectrometric methods which ar… more
Date: May 29, 2001
Creator: Halverson, J.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

W/Z + b bbar/Jets at NLO Using the Monte Carlo MCFM

Description: We summarize recent progress in next-to-leading QCD calculations made using the Monte Carlo MCFM. In particular, we focus on the calculations of p{bar p} {r_arrow} Wb{bar b}, Zb{bar b} and highlight the significant corrections to background estimates for Higgs searches in the channels WH and ZH at the Tevatron. We also report on the current progress of, and strategies for, the calculation of the process p{bar p} {r_arrow} W/Z + 2 jets.
Date: May 29, 2001
Creator: Campbell, John M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Aging of Polyurethane Foam Insulation in Simulated Refrigerator Panels--Three-Year Results with Third-Generation Blowing Agents

Description: Laboratory data are presented on the effect of constant-temperature aging on the apparent thermal conductivity of polyurethane foam insulation for refrigerators and freezers. The foam specimens were blown with HCFC-141b and with three of its potential replacements--HFC-134a, HFC-245fa, and cyclopentane. Specimens were aged at constant temperatures of 90 F, 40 F, and -10 F. Thermal conductivity measurements were made on two types of specimens: full-thickness simulated refrigerator panels contain… more
Date: May 29, 2001
Creator: Wilkes, K. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Hydraulic Performance of a Multistage Array of Advanced Centrifugal Contactors

Description: The hydraulic characteristics of an advanced design centrifugal contactor array have been determined at the Savannah River Laboratory (SRL). The advanced design utilizes couette mixing (Taylor vortices) in the annulus between the rotating and stationary bowls. Excellent phase separation over a wide range of flow conditions was obtained. Interfaces within an entire eight-stage array were controlled with a single weir air pressure.
Date: May 29, 2001
Creator: Hodges, M.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Probabilistic Assessment of Weld Quality in Steel Piping Under Seismic Conditions

Description: Seismic stress analyses of plant piping systems usually ignore the possibility of reduced joint strength due to weld imperfections. This paper presents a method that might be used to assess the impact of weld imperfections in a piping system, provided that limited destructive examination of welded joints is possible. A probability distribution function of weld quality is developed from the destructive examination, and this is combined with an experimentally determined relationship between weld … more
Date: May 29, 2001
Creator: Awadalla, N.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen