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GAMIDENT: a program to aid in the identification of unknown materials by gamma-ray spectroscopy

Description: A computer code, called GAMIDENT, was written to help identify isotopes by their gamma-ray emissions and thus to assist in the non-destructive assay of unknown materials. The program searches a file (called GAMIN) of gamma-ray spectra, from both radioactive decays and neutron captures, for matches with observed photon energies. This report describes the search procedure used, outlines the use of the code, and gives examples. The code is designed for operation at the Lawrence Livermore Laborator… more
Date: January 4, 1980
Creator: Howerton, R.J. & Eggens, C.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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D0 data management

Description: The management of data in programs for the D0 detector at the FNAL Tevatron collider is described with particular emphasis on aspects relevant to event reconstruction and data analysis. 3 figs.
Date: February 4, 1991
Creator: Protopopescu, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Posthydraulic fracture report

Description: A series of four, parallel, hydraulically induced hydrofractures were created. The hydrofractures will be used later in Phase I as the loading fractures for slurried explosives. An evaluation of the aerial extent, thickness, and resistance to air flow of each of these four fractures is reported. Downhole pressure, well-head pressure, surface resistivity, tiltmeter, hydrophone response, and crack opening measurements were used as dynamic tests to monitor and to later describe the hydrofracture. … more
Date: October 4, 1978
Creator: Hecht-Nielsen, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of Structural Modification on Second Harmonic Generation in Collagen

Description: The effects of structural perturbation on second harmonic generation in collagen were investigated. Type I collagen fascicles obtained from rat tails were structurally modified by increasing nonenzymatic cross-linking, by thermal denaturation, by collagenase digestion, or by dehydration. Changes in polarization dependence were observed in the dehydrated samples. Surprisingly, no changes in polarization dependence were observed in highly crosslinked samples, despite significant alterations in pa… more
Date: April 4, 2003
Creator: Stoller, P C; Reiser, K M; Celliers, P M & Rubenchik, A M
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A Novel Approach to Semantic and Coreference Annotation at LLNL

Description: A case is made for the importance of high quality semantic and coreference annotation. The challenges of providing such annotation are described. Asperger's Syndrome is introduced, and the connections are drawn between the needs of text annotation and the abilities of persons with Asperger's Syndrome to meet those needs. Finally, a pilot program is recommended wherein semantic annotation is performed by people with Asperger's Syndrome. The primary points embodied in this paper are as follows: (… more
Date: February 4, 2005
Creator: Firpo, M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ATLAS Metadata Task Force

Description: This document provides an overview of the metadata, which are needed to characterizeATLAS event data at different levels (a complete run, data streams within a run, luminosity blocks within a run, individual events).
Date: April 4, 2007
Creator: Collaboration, ATLAS; Costanzo, D.; Cranshaw, J.; Gadomski, S.; Jezequel, S.; Klimentov, A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Overcoming the anaerobic hurdle in phenotypic microarrays: Generation andvisualization of growth curve data for Desulfovibrio vulgaris Hildenborough

Description: Growing anaerobic microorganisms in phenotypic microarrays (PM) and 96-well microtiter plates is an emerging technology that allows high throughput survey of the growth and physiology and/or phenotype of cultivable microorganisms. For non-model bacteria, a method for phenotypic analysis is invaluable, not only to serve as a starting point for further evaluation, but also to provide a broad understanding of the physiology of an uncharacterized wild-type organism or the physiology/phenotype of a … more
Date: October 4, 2008
Creator: Borglin, Sharon E; Joyner, Dominique; Jacobsen, Janet; Mukhopadhyay, Aindrila & Hazen, Terry C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Comments on the paper 'A novel 3D wavelet-based filter forvisualizing features in noisy biological data', by Moss et al.

Description: Moss et al.(2005) describe, in a recent paper, a filter thatthey use to detect lines. We noticed that the wavelet on which thisfilter is based is a difference of uniform filters. This filter is anapproximation to the second derivative operator, which is commonlyimplemented as the Laplace of Gaussian (or Marr-Hildreth) operator (Marr&Hildreth, 1980; Jahne, 2002), Figure 1. We have compared Moss'filter with 1) the Laplace of Gaussian operator, 2) an approximation ofthe Laplace of Gaussian using u… more
Date: February 4, 2006
Creator: Luengo Hendriks, Cris L. & Knowles, David W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Searches for new physics at D0

Description: The integrated luminosity at Run 2 of the Tevatron is approaching the Run 1 total, and data analysis is progressing. New results in searches for new physics by the D0 experiment are presented in a variety of channels, demonstrating good performance of the detector and detailed understanding of the data.
Date: June 4, 2003
Creator: Brooijmans, Gustaaf
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Partial support for the International Global Atmospheric Chemistry Core Project Office

Description: IGAC provides an international framework for the planning, coordination, and execution of atmospheric--biospheric research with emphasis on projects which require resources beyond the capabilities of any single nation. The development of chemical emission inventories by IGAC scientists, the development and intercomparison under IGAC leadership of existing chemical transport models, the analysis of data gathered during IGAC-sponsored field campaigns, etc., has provided new scientific information… more
Date: May 4, 2001
Creator: Prinn, Ronald G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DEX: Increasing the Capability of Scientific Data Analysis Pipelines by Using Efficient Bitmap Indices to Accelerate Scientific Visualization

Description: We describe a new approach to scalable data analysis that enables scientists to manage the explosion in size and complexity of scientific data produced by experiments and simulations. Our approach uses a novel combination of efficient query technology and visualization infrastructure. The combination of bit map indexing, which is a data management technology that accelerates queries on large scientific datasets, with a visualization pipeline for generating images of abstract data results in a t… more
Date: February 4, 2005
Creator: Stockinger, Kurt; Shalf, John; Bethel, Wes & Wu, Kesheng
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Integrated monitoring and surveillance system for SNM.

Description: Complex special nuclear material (SNM) storage systems can benefit from automated monitoring and data integration systems that maximize safety and security and optimize system maintainability. Current methods of verification, which rely on physical access, are costly and labor intensive. A prototype data analysis. system for nuclear material monitoring is being developed through a joint effort by Argonne National Laboratory (ANL) and Lockheed Martin Idaho Technologies Company (LMITCO). The syst… more
Date: August 4, 1999
Creator: Aumeier, S.; Brush, B.; Ewing, T.; Gross, K.; Kotter, D.; Laurin-Kovitz, K. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Nuclear Resonance Fluorescence for Safeguards Applications

Description: In nuclear resonance fluorescence (NRF) measurements, resonances are excited by an external photon beam leading to the emission of {gamma} rays with specific energies that are characteristic of the emitting isotope. The promise of NRF as a non-destructive analysis technique (NDA) in safeguards applications lies in its potential to directly quantify a specific isotope in an assay target without the need for unfolding the combined responses of several fissile isotopes as often required by other N… more
Date: February 4, 2011
Creator: Ludewigt, Bernhard A.; Quiter, Brian J. & Ambers, Scott D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tank evaluation system shielded annular tank application

Description: TEST (Tank Evaluation SysTem) is a research project utilizing neutron interrogation techniques to analyze the content of nuclear poisons and moderators in tank shielding. TEST experiments were performed on an experimental SAT (Shielded Annular Tank) at the Rocky Flats Plant. The purpose of these experiments was threefold: (1) to assess TEST application to SATs, (2) to determine if Nuclear Safety inspection criteria could be met, and (3) to perform a preliminary calibration of TEST for SATs. Sev… more
Date: October 4, 1988
Creator: Freier, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Integrated test plan for a shallow high resolution compressional seismic reflection demonstration

Description: This integrated test plan describes the demonstration of a surface high resolution seismic reflection acquisition system using swept source technology. Compressional wave data will be collected along a previously occupied seismic line associated with a recent seismic survey north of the 300 Area. The swept source system will be employed testing two very different high resolution vibrator sources, one with a frequency range from 10 to 500 Hz and a smaller unit with a range from 20 to 1,500 Hz. T… more
Date: August 4, 1994
Creator: Narbutovskih, S. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Validation of a Gamma Spectrometric Method for the Measurement of {sup 226,228}Ra in Environmental Media Relevant to the Offshore Oil and Gas Industry

Description: The offshore production of oil and gas leads to naturally occurring {sup 226,228}Ra being brought to the surface along with produced water. Assessment of potential environmental exposures, if any, requires accurate, precise and practical methods for the measurement of low concentrations of {sup 226,228}Ra. A method for the simultaneous measurement of {sup 226,228}Ra in marine sediments, biota and produced water at a sensitivity of 0.01 pCi/g using high-sensitivity, high-resolution gamma spectro… more
Date: April 4, 2003
Creator: Bandong, B B; Kreek, S A; Bazan, J M; Torretto, P C; Dixon, J A; Edwards, W L et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Tracer Tests in a Fractured Dolomite: 3. Analysis of Mass Transfer in Single-Well Injection-Withdrawal Tests

Description: We investigated multiple-rate diffusion as a possible explanation for observed behavior in a suite of single-well injection-withdrawal (SWIW) tests conducted in a fractured dolomite. We first investigated the ability of a conventional double-porosity model and a multirate diffusion model to explain the data. This revealed that the multirate diffusion hypothesis/model is most consistent with all available data, and is the only model to date that is capable of matching each of the recovery curves… more
Date: March 4, 1999
Creator: Haggerty, R.; Fleming, S.W.; Meigs, L.C. & McKenna, S.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Tracer Tests in a Fractured Dolomite: 2. Controls on Mass-Recovery Rates for a Single-Porosity, Heterogeneous Conceptualization

Description: A single-well injection-withdrawal (SWIW) test is evaluated as a tool to differentiate between single- and double-porosity conceptualizations of a system. Results from single-porosity simulations incorporating plume drift are also compared to observed data from a recent series of SWIW tests conducted in a fractured dolomite unit, for which a double-porosity conceptualization has been proposed. We evaluate the difficulty of differentiating the response for a double-porosity conceptualization fro… more
Date: March 4, 1999
Creator: Altman, S. J.; Meigs, L. C. & Jones, T. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Head Wave Traveltimes in a Three-Dimensional Multilayered Earth

Description: Traveltimes of head waves propagating within a three-dimensional (3D) multilayered earth are described by straightforward mathematical formulae. The earth model consists of a set of homogeneous and isotropic layers bounded by plane interfaces. Each interface (including the surface) may possess arbitrary strike and dip. In this model, the source-to-receiver raypath of a critically refracted wave consists of a set of straight line segments, not confined to a single plane. Algebraic derivations of… more
Date: March 4, 1999
Creator: Aldridge, D.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Use of Morphological Operators and Pattern Recognition Techniques for Sorting the First Data

Description: The application of morphological and pattern recognition techniques to the sorting of FIRST data is presented. FIRST (Faint Images of the Radio Sky at Twenty Centimeters) is designed to produce the radio equivalent of the Palomar Observatory Sky Survey, using the National Radio Astronomical Observatory Very Large Array. A catalog of source positions and Gaussian-fit parameters for the sources is available. The goal of this part of the project is the automatic classification of types of sources,… more
Date: November 4, 1999
Creator: Proctor, D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

BaBar Physics Book

Description: This book presents the results of a year-long workshop devoted to a review of the physics opportunities of the BABAR experiment at the PEP-II B Factory, at the Stanford Linear Accelerator Center laboratory. The workshop brought together a number of theorists with experimentalists from the BABAR Collaboration. Each chapter represents the contribution of a working group and presents both a theoretical summary of the relevant topics and the results of related simulation studies. The working group … more
Date: November 4, 1998
Creator: Quinn, Helen
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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