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open access

Critical Infrastructure Protection: National Plan for Information Systems Protection

Description: Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO assessed national security legal authorities related to infrastructure protection, focusing on the administration's National Plan for Information Systems Protection."
Date: February 11, 2000
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

Energy Policy Act of 1992: Limited Progress in Acquiring Alternative Fuel Vehicles and Reaching Fuel Goals

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the progress towards achieving the goals of the Energy Policy Act's petroleum replacement programs, focusing on the: (1) progress made in acquiring alternative fuel vehicles and using alternative fuels to meet the act's fuel replacement goals; (2) impediments to using alternative fuel vehicles; and (3) measures that can be taken to address those … more
Date: February 11, 2000
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

Prospecting for lunar ice using a multi-rover cooperative team

Description: A multi-rover cooperative team or swarm developed by Sandia National Laboratories is described, including various control methodologies that have been implemented to date. How the swarm's capabilities could be applied to a lunar ice prospecting mission is briefly explored. Some of the specific major engineering issues that must be addressed to successfully implement the swarm approach to a lunar surface mission are outlined, and potential solutions are proposed.
Date: February 11, 2000
Creator: Klarer, Paul R.; Feddema, John T. & Lewis, Christopher L.
Partner: UNT Libraries Government Documents Department
open access

Evaluation of 3 Inch SN-219 Failure and S and SX Tank Farm Saltwell Piping

Description: Evaluation of direct buried piping currently in use or designated for future Saltwell pumping in S and SX Farms. Documented evaluation of failed S-103 saltwell pumping transfer line 3 inch SN-219. This evaluation is intended to reflect current status of Saltwell piping, when taken in context with referenced documents.
Date: February 11, 2000
Creator: ELSEN, J.J.
Partner: UNT Libraries Government Documents Department
open access

Cold Pump Test and Training and Mock Up Facility Functions and Requirements

Description: This document defines the functions and requirements (F&R) for a test facility to provide for pre-deployment, checkout, testing, and training for the underground storage tank retrieval equipment, systems, and crews that will be developed or deployed as part of Waste Feed Delivery. The F&R for a River Protection Project retrieval test facility, one that supports a production mode tank farm system, are identified.
Date: February 11, 2000
Creator: BELLOMY, J.R.
Partner: UNT Libraries Government Documents Department
open access

Microwave Hematoma Detector for the Rapid Assessment of Head Injuries

Description: A non-invasive microwave device for the detection of epi/subdural hemorrhaging (hematoma) is under current development. The final device will be highly portable and allow real time assessment of head injuries, thereby satisfying early detection needs of the field technician as well as providing a tool for repetitious monitoring of high-risk individuals. The device will adopt the advanced technology of micropower impulse radar (MIR) which is a state of the art low cost ultra wide band (UWB) micr… more
Date: February 11, 2000
Creator: Hadded, W.; Chang, J.; Rosenbury, T.; Dallum, G.; Welsch, P.; Scott, D. et al.
Partner: UNT Libraries Government Documents Department
open access

Process development testing in support of the plutonium immobilization program

Description: As an integral part of the plutonium disposition program, formulation and process development is being performed for the immobilization of surplus plutonium in a titanate-based ceramic. Small-scale process prototypic and lab-scale functionally prototypic equipment have been tested to help define the immobilization process. The testing has included non-radioactive surrogates and actual actinide oxides contained in the immobilized form. A summary of the process development studies, as well as the… more
Date: February 11, 2000
Creator: Herman, C. & Ebbinghaus, B.
Partner: UNT Libraries Government Documents Department
open access

Application of Knowledge Management: Pressing questions and practical answers

Description: Sandia National Laboratory are working on ways to increase production using Knowledge Management. Knowledge Management is: finding ways to create, identify, capture, and distribute organizational knowledge to the people who need it; to help information and knowledge flow to the right people at the right time so they can act more efficiently and effectively; recognizing, documenting and distributing explicit knowledge (explicit knowledge is quantifiable and definable, it makes up reports, manual… more
Date: February 11, 2000
Creator: Fromm-Lewis, Michelle
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: P-Prairie View]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 11, 2000, 10:00 p.m.
Duration: 2 minutes 08 seconds
Creator: NBC 5 (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

Cold Pump Test and Training and Mock Up Facility Feasibility and Need Study

Description: A cold pump test, training, and mock-up facility needs to be acquired and installed to support Tank Waste Retrieval and Disposal (TWR&D). Such a facility would serve useful purposes for the TWR&D, and would also have the capability to provide similar services for other Hanford Site activities.
Date: February 11, 2000
Creator: BELLOMY, J.R.
Partner: UNT Libraries Government Documents Department
open access

Pion Production Models and Neutrino Factories

Description: Scenarios for the building of muon colliders or storage rings suitable for the generation of robust neutrino beams call for the generation of a prodigious quantity of pions. These pions are then conducted into a decay channel where the resulting muon decay products can be collected for cooling and subsequent acceleration. Central to this concept is the design and construction of a target which will be highly efficient in producing pions of both signs while mitigating the absorption of these pio… more
Date: February 11, 2000
Creator: Collot, J.; Kirk, H. G. & Mokhov, N. V.
Partner: UNT Libraries Government Documents Department
open access

Small area analysis using micro-diffraction techniques

Description: An overall trend toward smaller electronic packages and devices makes it increasingly important and difficult to obtain meaningful diffraction information from small areas. X-ray micro-diffraction, electron back-scattered diffraction (EBSD) and Kossel are micro-diffraction techniques used for crystallographic analysis including texture, phase identification and strain measurements. X-ray micro-diffraction primarily is used for phase analysis and residual strain measurements. X-ray micro-diffrac… more
Date: February 11, 2000
Creator: GOEHNER,RAYMOND P.; TISSOT JR.,RALPH G. & MICHAEL,JOSEPH R.
Partner: UNT Libraries Government Documents Department
open access

Stimuli-responsive polymer-grafted lipid-based complex fluids as organized media for supramolecular photochemistry

Description: Recent studies involving the use of micelles, reverse micelles, and microemulsions as organized microheterogeneous media for effecting photochemical transformations have led to growing recognition that the nature of the reaction medium (i.e., microenvironment) may strongly influence the course and efficiency of photoinduced electron transfer. Of particular interest in photochemical energy conversion research is the study of such effects in natural photosynthesis, the process whereby plants and … more
Date: February 11, 2000
Creator: Firestone, M. A.; Tiede, D. M.; Seifert, S. & Thiyagarajan, P.
Partner: UNT Libraries Government Documents Department
open access

Precipitate hydrolysis experimental facility (PHEF) Run 66 And 67, Final report

Description: During the period from late June to early September of this year, approximately 1,600 gallons of precipitate feed stored in the Precipitate Hold Tank (PHT) at PHEF decomposed. This decomposition took place during a two month storage period of the Tetraphenyl borate (TPB) precipitate under a CO{sub 2} blanket. The visual inspection of the tank revealed that a very small amount of TPB solids were left and that there were approximately 100 to 110 gals of benzene/high boilers present in the tank. T… more
Date: February 11, 2000
Creator: Shah, H. B. & Lambert, D. P.
Partner: UNT Libraries Government Documents Department
open access

Regional groundwater flow model for C, K. L. and P reactor areas, Savannah River Site, Aiken, SC

Description: A regional groundwater flow model encompassing approximately 100 mi2 surrounding the C, K, L, and P reactor areas has been developed. The reactor flow model is designed to meet the planning objectives outlined in the General Groundwater Strategy for Reactor Area Projects by providing a common framework for analyzing groundwater flow, contaminant migration and remedial alternatives within the Reactor Projects team of the Environmental Restoration Department. The model provides a quantitative und… more
Date: February 11, 2000
Creator: Flach, G. P.
Partner: UNT Libraries Government Documents Department
open access

Results of toxicity tests and chemical analyses conducted on sediments collected from the TNX Outfall Delta Operable Unit, July 1999

Description: In order to provide unit specific toxicity data that will be used to address critical uncertainty in the ecological risk assessment (ERA) for the TNX Outfall Delta Operable Unit (TNXOD OU), sediments were collected from eight locations in the Inner Swamp portion of the operable unit and two unit specific background locations. These samples were analyzed for total mercury, total uranium, and sediment toxicity.
Date: February 11, 2000
Creator: Specht, Winona L.
Partner: UNT Libraries Government Documents Department
open access

A survey of packages for large linear systems

Description: This paper evaluates portable software packages for the iterative solution of very large sparse linear systems on parallel architectures. While we cannot hope to tell individual users which package will best suit their needs, we do hope that our systematic evaluation provides essential unbiased information about the packages and the evaluation process may serve as an example on how to evaluate these packages. The information contained here include feature comparisons, usability evaluations and … more
Date: February 11, 2000
Creator: Wu, Kesheng & Milne, Brent
Partner: UNT Libraries Government Documents Department
open access

In-situ Kd values and geochemical behavior for inorganic and organic constituents of concern at the TNX Outfall Delta

Description: A series of tests were conducted to provide site-specific Kd values for constituents of concern at the TNX Outfall Delta Operable Unit. These Kd values can be used to calculate contaminant migration within the operable unit and are, at this time considered to be the most defensible values.
Date: February 11, 2000
Creator: Kaplan, D.I.
Partner: UNT Libraries Government Documents Department
open access

Computational fluid dynamics modeling of proton exchange membrane fuel cells

Description: A transient, multi-dimensional model has been developed to simulate proton exchange membrane (PEM) fuel cells. The model accounts simultaneously for electrochemical kinetics, current distribution, hydrodynamics and multi-component transport. A single set of conservation equations valid for flow channels, gas-diffusion electrodes, catalyst layers and the membrane region are developed and numerically solved using a finite-volume-based computational fluid dynamics (CFD) technique. The numerical mo… more
Date: February 11, 2000
Creator: Um, Sukkee; Wang, C. Y. & Chen, Ken S.
Partner: UNT Libraries Government Documents Department
open access

On numerical techniques for the transformation to an orthogonal coordinate system aligned with a vector field

Description: The authors explore the use of variational grid-generation to perform alignment of a grid with a given vector field. Variational methods have proven to be a powerful class of grid-generators, but when they are used in alignment, difficulties may arise in treating boundaries due to an incompatibility between geometry and vector field. In this paper, a refinement of the procedure of iterating boundary values is presented. It allows one to control the quality of the grid in the face of the above-m… more
Date: February 11, 2000
Creator: CASTILLO,JOSE E. & OTTO,JAMES S.
Partner: UNT Libraries Government Documents Department
open access

Self-organized criticality, long-time correlations, and the standard transport paradigm

Description: Some aspects of low-frequency, long-wavelength fluctuations are considered. A stochastic model is used to show that power-law time correlations need not arise from self-organized criticality. A formula for the frequency spectrum of uncorrelated, overlapping avalanches is shown to be a special case of the spectral balance equation of renormalized statistical turbulence theory. It is argued that there need be no contradiction between the presence of long-time correlations and the existence of loc… more
Date: February 11, 2000
Creator: Krommes, John A.
Partner: UNT Libraries Government Documents Department
open access

Reaction synthesis of Ni-Al based particle composite coatings

Description: Electrodeposited metal matrix/metal particle composite (EMMC) coatings were produced with a nickel matrix and aluminum particles. By optimizing the process parameters, coatings were deposited with 20 volume percent aluminum particles. Coating morphology and composition were characterized using light optical microscopy (LOM), scanning electron microscopy (SEM), and electron probe microanalysis (EPMA). Differential thermal analysis (DTA) was employed to study reactive phase formation. The effect … more
Date: February 11, 2000
Creator: Susan, Donald F.; Misiolek, Woiceck Z. & Marder, Arnold R.
Partner: UNT Libraries Government Documents Department
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