31 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Background"  
Results: 1 - 24 next
captions transcript

[News Clip: Brady - Garland]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 21, 1994, 6:00 p.m.
Duration: 1 minute 54 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Brady law]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 28, 1994, 10:00 p.m.
Duration: 1 minute 50 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Background]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 28, 1994, 5:00 p.m.
Duration: 1 minute 39 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Background Investigations: Office of Personnel Management Needs to Improve Transparency of Its Pricing and Seek Cost Savings

Description: A letter report issued by the Government Accountability Office with an abstract that begins "OPM’s reported costs to conduct background investigations increased by almost 79 percent, from about $602 million in fiscal year 2005 to almost $1.1 billion in fiscal ear 2011 (in fiscal year 2011 dollars). However, the extent to which OPM’s cost data are reliable is unknown because an audit of OPM’s revolving fund, which finances business-type operations, has not been conducted. Independent audits of O… more
Date: February 28, 2012
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An aerial radiological survey of Pocatello and Soda Springs, Idaho and surrounding area, June--July 1986

Description: Three aerial radiological surveys were conducted during the period 16 June through 15 July 1986 over the towns of Pocatello, Soda Springs, and Fort Hall, Idaho and the surrounding areas. The surveys were performed for the United States Environmental Protection Agency (EPA) by the United States Department of Energy's (DOE) Remote Sensing Laboratory (RSL), utilizing the Aerial Measuring System (AMS). This work was completed in cooperation with a study by the EPA to conduct a dose assessment of hu… more
Date: February 1, 1987
Creator: Berry, H. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radiation Doses to Hanford Workers from Natural Potassium-40

Description: The chemical element potassium is an essential mineral in people and is subject to homeostatic regulation. Natural potassium comprises three isotopes, 39K, 40K, and 41K. Potassium-40 is radioactive, with a half life of 1.248 billion years. In most transitions, it emits a β particle with a maximum energy of 0.560 MeV, and sometimes a gamma photon of 1.461 MeV. Because it is ubiquitous, 40K produces radiation dose to all human beings. This report contains the results of new measurements of 40K i… more
Date: February 13, 2009
Creator: Strom, Daniel J.; Lynch, Timothy P. & Weier, Dennis R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of radioactive background rejection in 76Ge neutrino-lessdouble-beta decay experiments using a highly segmented HPGe detector

Description: A highly segmented coaxial HPGe detector was operated in a low background counting facility for over 1 year to experimentally evaluate possible segmentation strategies for the proposed Majorana neutrino-less double-beta decay experiment. Segmentation schemes were evaluated on their ability to reject multi-segment events while retaining single-segment events. To quantify a segmentation scheme's acceptance efficiency the percentage of peak area due to single segment events was calculated for peak… more
Date: February 5, 2007
Creator: Chan, Yuen-Dat; Campbell, D. B.; Vetter, K.; Henning, R.; Lesko, K.; Chan, Y. D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Underground neutrino astronomy

Description: A review is made of possible astronomical neutrino sources detectable with underground facilities. Comments are made about solar neutrinos and gravitational-collapse neutrinos, and particular emphasis is placed on ultra-high-energy astronomical neutrino sources. An appendix mentions the exotic possibility of monopolonium.
Date: February 1, 1983
Creator: Schramm, D. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Topology Changing Transitions in Bubbling Geometries

Description: Topological transitions in bubbling half-BPS Type IIB geometries with SO(4) x SO(4) symmetry can be decomposed into a sequence of n elementary transitions. The half-BPS solution that describes the elementary transition is seeded by a phase space distribution of fermions filling two diagonal quadrants. We study the geometry of this solution in some detail. We show that this solution can be interpreted as a time dependent geometry, interpolating between two asymptotic pp-waves in the far past and… more
Date: February 15, 2005
Creator: Horava, Petr & Shepard, Peter G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Topology Changing Transitions in Bubbling Geometries

Description: Topological transitions in bubbling half-BPS Type IIB geometries with SO(4) x SO(4) symmetry can be decomposed into a sequence of n elementary transitions. The half-BPS solution that describes the elementary transition is seeded by a phase space distribution of fermions filling two diagonal quadrants. We study the geometry of this solution in some detail. We show that this solution can be interpreted as a time dependent geometry, interpolating between two asymptotic pp-waves in the far past and… more
Date: February 15, 2005
Creator: Horava, Petr & Shepard, Peter G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

New Measurements of the Cosmic Background Radiation Temperature at3.3 mm Wavelength

Description: We have measured the temperature of the cosmic background radiation (CBR) at 3.3 mm wavelength in 1982, 1983, and 1984 as part of a larger project to determine the CBR temperature at five wavelengths from 12 cm to 3.3 mm (Smoot et al. 1985). The 3.3-mm measurements yield a brightness temperature of 2.57 K with a 1{sigma} uncertainty of 20.12 K. This paper describes the instrument, the measurement techniques, and the data-analysis procedures used. Our result is in good agreement with recent meas… more
Date: February 1, 1986
Creator: Witebsky, C.; Smoot, G.; De Amici, G. & Friedman, S.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The High Background Radiation Area in Ramsar Iran: Geology, Norm, Biology, LNT, and Possible Regulatory Fun

Description: The city of Ramsar Iran hosts some of the highest natural radiation levels on earth, and over 2000 people are exposed to radiation doses ranging from 1 to 26 rem per year. Curiously, inhabitants of this region seem to have no greater incidence of cancer than those in neighboring areas of normal background radiation levels, and preliminary studies suggest their blood cells experience fewer induced chromosomal abnormalities when exposed to 150 rem ''challenge'' doses of radiation than do the bloo… more
Date: February 25, 2002
Creator: Karam, P. Andrew
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Site Specific Analyses of a Spent Nuclear Fuel Transportation Accident

Description: The number of spent nuclear fuel (SNF) shipments is expected to increase significantly during the time period that the United States' inventory of SNF is sent to a final disposal site. Prior work estimated that the highest accident risks of a SNF shipping campaign to the proposed geologic repository at Yucca Mountain were in the corridor states, such as Illinois. The largest potential human health impacts would be expected to occur in areas with high population densities such as urban settings.… more
Date: February 24, 2003
Creator: Biwer, B. M. & Chen, S. Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Fort Worth Police]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: February 14, 1980, 6:00 p.m.
Duration: 1 minute 29 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Decontamination of the Ornl Molten-Salt Flouride-Volatility Pilot Plant After Processing Irradiated Zirconium-Uranium Alloy Fuel

Description: This report describes decontamination methods that have been used twice, flowing two periods of "hot" operation, to reduce radiation levels in excess of 2000 r/hr to values sufficiently low to permit extensive direct maintenance and equipment modification.
Date: February 1, 1966
Creator: Mann, S. & Youngblood, E.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Data Filter Characteristics and Effects

Description: The use of data filters in electronic circuits is normally considered undesirable because filtering irretrievably eliminates desirable as well as undesirable information. Filtering is necessary in some applications, however, to obtain any useful information from measurements made in high-noise and distorted environments and from FM tape-recording and carrier-frequency-type systems. This memorandum discusses related theory and special filter characteristics necessary for retaining the maximum us… more
Date: February 1, 1965
Creator: Mortley, J.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Search for proton decay: introduction

Description: In interpreting contained events observed in various proton decay detectors one can sometimes postulate, though usually not unambiguously, a potential decay mode of the proton, called a candidate. It is called a candidate, because for any individual event it is not possible to exclude the possibility that it is instead due to cosmic ray background, chiefly atmospheric neutrinos. Some consistency checks are proposed which could help establish proton decay, if it does occur in the presently acces… more
Date: February 26, 1984
Creator: Goldhaber, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Experimental study of variations in background radiation and the effect on Nuclear Car Wash sensitivity

Description: Error rates in a cargo screening system such as the Nuclear Car Wash [1-7] depend on the standard deviation of the background radiation count rate. Because the Nuclear Car Wash is an active interrogation technique, the radiation signal for fissile material must be detected above a background count rate consisting of cosmic, ambient, and neutron-activated radiations. It was suggested previously [1,6] that the Corresponding negative repercussions for the sensitivity of the system were shown. Ther… more
Date: February 7, 2007
Creator: Church, J; Slaughter, D; Norman, E; Asztalos, S & Biltoft, P
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

COMPARISON OF NATURAL BACKGROUND DOSE RATES FOR RESIDENTS OF THE AMARGOSA VALLEY, NV, TO THOSE IN LEADVILLE, CO, AND THE STATES OF COLORADO AND NEVADA

Description: In the latter half of 2005, the U.S. Environmental Protection Agency (USEPA) published a Proposed Rule (40 CFR Part 197) for establishing a dose rate standard for limiting radionuclide releases from the proposed Yucca Mountain high-level radioactive waste repository during the time period from 10{sup 4} to 10{sup 6} years after closure. The proposed standard was based on the difference in the estimated total dose rate from natural background in the Amargosa Valley and the ''average annual backg… more
Date: February 24, 2006
Creator: Sun, D. Moeller and L. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Radiation Detection Field Test at the Federal Express (FedEx) Air Cargo Facility at Denver International Airport (DIA)

Description: Lawrence Livermore National Laboratory (LLNL) recently conducted a field-test of radiation detection and identification equipment at the air cargo facility of Federal Express (FedEx) located at Denver International Airport (DIA) over a period of two weeks. Comprehensive background measurements were performed and were analyzed, and a trial strategy for detection and identification of parcels displaying radioactivity was implemented to aid in future development of a comprehensive protection plan.… more
Date: February 11, 2004
Creator: Weirup, D.; Waters, A.; Hall, H.; Dougan, A.; Trombino, D.; Mattesich, G. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen