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Great Lodges of the National Parks

Description: Video footage of episode 4 of season 1 of the Television series "Great Lodges of the National Parks" by PBS and a documentary on the Grand Canyon.
Date: July 1, 2002
Duration: 2 hours 3 minutes 09 seconds
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Church & Synagogue Libraries, Volume 35, Number 7, July/August 2002

Description: Bimonthly publication of the Church and Synagogue Library Association, containing news and events related to the organization and its members, reviews of books and other materials, and stories of interest to the management of congregational libraries.
Date: July 2002
Creator: Church and Synagogue Library Association
Item Type: Refine your search to only Journal/Magazine/Newsletter
Partner: UNT Libraries Special Collections
open access

Free Space Optical Communications Utilizing MEMS Adaptive Optics Correction

Description: Free space optical communications (FSO) are beginning to provide attractive alternatives to fiber-based solutions in many situations. Currently, a handful of companies provide fiberless alternatives specifically aimed at corporate intranet and sporting event video applications. These solutions are geared toward solving the ''last mile'' connectivity issues. There exists a potential need to extend this pathlength to distances much greater than a 1 km, particularly for government and military app… more
Date: July 9, 2002
Creator: Thompson, C. A.; Kartz, M. W.; Flath, L. M.; Wilks, S. C.; Young, R. A.; Johnson, G. W. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Photometric Calibration of an EUV Flat Field Spectrometer at the Advanced Light Source

Description: The photometric calibration of ail extreme ultraviolet flat field spectrometer has been done at the Advanced Light Source at LBNL. This spectrometer is used to record spectrum for atomic physics research from highly charged ions in plasmas created in the Livermore electron beam ion traps EBIT-I and SUPEREBIT. Two calibrations were done each with a different gold-coated grating, a 1200 {ell}/mm and a 2400 {ell}/mm, that covered 75-300{angstrom} and 15-160{angstrom}, respectively. The detector fo… more
Date: July 3, 2002
Creator: May, M.; Lepson, J.; Beiersdorfer, P.; Thorn, D.; Chen, H.; Hey, D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

UNIVERSAL BEHAVIOR OF CHARGED PARTICLE PRODUCTION IN HEAVY ION COLLISIONS.

Description: The PHOBOS experiment at RHIC has measured the multiplicity of primary charged particles as a function of centrality and pseudorapidity in Au+Au collisions at {radical}(s{sub NN}) = 19.6, 130 and 200 GeV. Two observations indicate universal behavior of charged particle production in heavy ion collisions. The first is that forward particle production, over a range of energies, follows a universal limiting curve with a non-trivial centrality dependence. The second arises from comparisons with pp/… more
Date: July 24, 2002
Creator: STEINBERG,P. A. FOR THE PHOBOS COLLABORATION
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Signaling to the P53 Tumor Suppressor Through Pathways Activated by Genotoxic and Non-Genotoxic Stresses.

Description: The p53 tumor suppressor is a tetrameric transcription factor that is post-translational modified at {approx}18 different sites by phosphorylation, acetylation, or sumoylation in response to various cellular stress conditions. Specific posttranslational modifications, or groups of modifications, that result from the activation of different stress-induced signaling pathways are thought to modulate p53 activity to regulate cell fate by inducing cell cycle arrest, apoptosis, or cellular senescence… more
Date: July 1, 2002
Creator: Anderson, C. W. & Appella, E.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

Evaluation of the Radiochemistry of Near-Field Water Samples at the Nevada Test Site Applied to the Definition of a Hydrologic Source Term

Description: Effective management of available groundwater resources and strategies for remediation of water impacted by past nuclear testing practices depend on knowledge about the migration of radionuclides in groundwater away from the sites of the explosions. A primary concern is to assess the relative mobilities of the different radionuclide species found near sites of underground nuclear tests and to determine the concentration, extent, and speed of this movement. Ultimately the long term transport beh… more
Date: July 5, 2002
Creator: Smith, D K
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Review of Excess Weapons Plutonium Disposition LLNL Contract Work in Russia-(English)

Description: This third meeting of the recently completed and ongoing Russian plutonium immobilization contract work was held at the State Education Center (SEC) in St. Petersburg on January 14-18, 2002. The meeting agenda is reprinted here as Appendix A and the attendance list as Appendix B. The meeting had 58 Russian participants from 21 Russian organizations, including the industrial sites (Mayak, Krasonayarsk-26, Tomsk), scientific institutes (VNIINM, KRI, VNIPIPT, RIAR), design organizations (VNIPIET a… more
Date: July 11, 2002
Creator: Jardine, L & Borisov, G B
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of White Light Emission Observed During Damage in the Bulk of DKDP Crystals

Description: We have investigated the flash of light that accompanies laser damage using time-resolved spectroscopy. Damage events were initiated in the bulk of DKDP and fused silica with 355-nm, 3-ns pulsed radiation. Spectra from the accompanying flash were recorded in the 200-500 nm wavelength range with 10-ns temporal resolution. Ten ns following damage initiation, the spectra were found to be roughly blackbody with temperatures on the order of 5000-7000 K. The observed temperatures and cooling rates ca… more
Date: July 18, 2002
Creator: Carr, C W; Radousky, H B; Staggs, M; Rubenchik, A; Feit, M & Demos, S G
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Universal Behavior of Charged Particle Production in Heavy Ion Collisions at RHIC Energies.

Description: The PHOBOS experiment at RHIC has measured the multiplicity of primary charged particles as a function of centrality and pseudorapidity in Au+Au collisions at {radical}(s{sub NN}) = 19.6, 130 and 200 GeV. Two kinds of universal behavior are observed in charged particle production in heavy ion collisions. The first is that forward particle production, over a range of energies, follows a universal limiting curve with a non-trivial centrality dependence. The second arises from comparisons with pp/… more
Date: July 18, 2002
Creator: Steinberg, P. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Safety Report for Raman Spectroscopy: Safety Evaluation and Search Algorithm Enhancement

Description: This study determines safety hazards associated with using a 300-mW 785-nm near-IR Raman laser for sample analysis. Most safety concerns are associated with excessive sample heating resulting from sample illumination. Thermography experiments were designed to quantitatively assess which visible surface colors heat most when exposed to the Raman laser. Temperatures achieved after illuminating 216 color patches with the unfocussed laser are presented. Figures contained in this report allow a fiel… more
Date: July 5, 2002
Creator: Harvey, Scott D. & Wright, Bob W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Efficiency of Scintillator Materials in the Energy Range 8.0-32.0 keV

Description: X-ray microtomography requires the measurement of x-ray attenuation along ray paths through a specimen, and on the inversion of these data to obtain a spatially resolved mapping of the microstructure of the specimen. To do this efficiently, two-dimensional array detectors are often used to measure the transmitted x-rays by capturing and recording each x-ray incident on the detector. The highest resolution CT instruments perform this by converting the incident x-rays to visible light, and then f… more
Date: July 1, 2002
Creator: Kinney, J H & Haupt, D L
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Combining Distributed and Shared Memory Models: Approach and Evolution of the Global Arrays Toolkit

Description: Both shared memory and distributed memory models have advantages and shortcomings. Shared memory model is much easier to use but it ignores data locality/placement. Given the hierarchical nature of the memory subsystems in the modern computers this characteristic might have a negative impact on performance and scalability. Various techniques, such as code restructuring to increase data reuse and introducing blocking in data accesses, can address the problem and yield performance competitive wit… more
Date: July 29, 2002
Creator: Nieplocha, Jarek; Harrison, Robert J.; Kumar, Mukul; Palmer, Bruce J.; Tipparaju, Vinod & Trease, Harold E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Muon Acceleration With a Very Fast Ramping Synchrotron for a Neutrino Factory.

Description: A 4600 Hz fast ramping synchrotron is explored as an economical way of accelerating muons from 4 to 20 GeV/c for a neutrino factory. Eddy current losses are minimized by the low machine duty cycle plus thin grain oriented silicon steel laminations and thin copper wires. Combined function magnets with high gradients alternating within single magnets form the lattice we describe. Muon survival is 83%.
Date: July 1, 2002
Creator: Summers, D. J.; Berg, J. S.; Garren, A. A. & Palmer, R. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

RFOFO RING COOLER.

Description: This note describes the design of an ionization cooling ring that uses an alternating polarity solenoid lattice. The ring is approximately 33 m in circumference and has 12 cells. Each cell has two opposing focusing solenoids placed either side of a hydrogen wedge absorber. The solenoid coils are located outside pillbox rf cavities. Bending is provided by tipping the solenoid coils. The simulated merit factor ({approx} the increase in 6D phase space density) is 81.
Date: July 1, 2002
Creator: BERG,J. S. FERNOW,R. C. PALMER,R. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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