18 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "63 Radiation, Thermal, And Other Environmental Pollutant Effects On Living Organisms And Biological Materials"  
Results: 1 - 18
open access

Environmental radiological surveillance in perspective: the relative importance of environmental media as a function of effluent pathway and radionuclides

Description: Most published guidelines for environmental surveillance emphasize the collection and analysis of specific media (e.g. air, water, milk, direct radiation) without total regard for the potential dose impact of the radionuclides expected in or actually present in the effluent streams from nuclear facilities. To determine the relative importance of medium/nuclide combinations in environmental surveillance, the experience at major ERDA sites and at operating nuclear power plants was reviewed. Typic… more
Date: October 1, 1977
Creator: Denham, D. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Low doses of alpha particles do not induce sister chromatid exchanges in bystander Chinese hamster cells defective in homologous recombination

Description: We reported previously that the homologous recombinational repair (HRR)-deficient Chinese hamster mutant cell line irs3 (deficient in the Rad51 paralog Rad51C) showed only a 50% spontaneous frequency of sister chromatid exchange (SCE) as compared to parental wild-type V79 cells. Furthermore, when irradiated with very low doses of alpha particles, SCEs were not induced in irs3 cells, as compared to a prominent bystander effect observed in V79 cells (Nagasawa et al., Radiat. Res. 164, 141-147, 20… more
Date: October 26, 2007
Creator: Nagasawa, H; Wilson, P F; Chen, D J; Thompson, L H; Bedford, J S & Little, J B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Genetic Control or Repair and Adaptive Response to Low-Level DNA Damage

Description: Research was focused on how a single double-strand break - a model of low-dose ionizing radiation-induced DNA damage - could be studied in a simple model system, budding yeast. Breaks were induced in several different ways. We used the site-specific HO endonuclease to create a single DSB in all cells of the population so that its fate could be extensively analyzed genetically and molecularly. We also used two heterologous systems, the plant DS element and the Rag1/Rag2 proteins, to generate dif… more
Date: October 5, 2009
Creator: Haber, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

IRRADIATION EFFECTS ON THE PHYSICAL CHARACTERISTICS OF SEWAGE SLUDGE

Description: The radiation effects on the physical characteristic of the sewage sludge were studied in order to obtain information which will be used for study on the enhancement of the sludge's dewaterability. Water contents, capillary suction time, zeta potential, irradiation dose, sludge acidity, total solid concentration, sludge particle size and microbiology before and after irradiation were investigated. Irradiation gave an effect on physical characteristics sludge. Water content in sludge cake could … more
Date: October 5, 2004
Creator: Lee, M. J.; Lee, J. K.; Yoo, D. H. & Ho, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Radiation cancer analysis and low dose risk estimation: new developments and perspectives - conference to be held Feb 2002. Final technical report for period November 1, 2001--October 31, 2002

Description: The Proceedings of the 20th LH Gray Conference on Radiation Cancer Analysis and Low Dose Risk Estimation: New Developments and Perspectives (17-21 February 2002, Ede, the Netherlands) comprises 32 peer-reviewed papers on invited and proffered contributions to the conference with a preface by the guest editors. The on-going discussion of low dose radiation risk; the issue of the linear, non-threshold extrapolation; and the anticipated new recommendations, e.g. from BEIR and ICRP, provided the ba… more
Date: October 2002
Creator: Brugmans, M. J. P. & Leenhouts, H. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final technical report for Interagency Agreement No. DE-AI02-98ER62683: Development of a functional genomics approach to use radiation-induced changes in gene expression to monitor for low dose and low dose-rate exposures

Description: Microarray analysis and other molecular biology techniques were used to investigate the regulation of gene expression following ionizing radiation exposure.
Date: October 23, 2001
Creator: Albert J. Fornace, Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Identification and Toxicological Assessment of Thermal Degradation Products of Organic Constituents of Parts Comprising LLNL Design ARG Phase 2 Interim Report

Description: The goals of Phase II of the Non Rad Toxics Project were: (1) To identify and quantify the major chemicals comprising smoke from smoldering plastics most prevalent in the LLNL designed weapons as well as materials unique to LANL designed weapons and SANDIA parts found in the LLNL and LANL weapons; and (2) To perform toxic assessment of the identified chemicals using existing literature information or TOPKAT, a computer program designed for toxic assessment of organic and certain organo-metallic… more
Date: October 27, 1999
Creator: Lipska, A.E. & Lopez, R.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analytical Study of High Concentration PCB Paint at the Heavy Water Components Test Reactor

Description: This report provides results of an analytical study of high concentration PCB paint in a shutdown nuclear test reactor located at the US Department of Energy's Savannah River Site (SRS). The study was designed to obtain data relevant for an evaluation of potential hazards associated with the use of and exposure to such paints.
Date: October 21, 1998
Creator: Lowry, N.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of fall chinook salmon spawning adjacent to the In-Situ Redox Manipulation treatability test site, Hanford Site, Washington

Description: The In Situ Redox Manipulation (ISRM) experiment is being evaluated as a potential method to remove contaminants from groundwater adjacent to the Columbia River near the 100-D Area. The ISRM experiment involves using sodium dithionate (Na{sub 2}O{sub 6}S{sub 2}) to precipitate chromate from the groundwater. The treatment will likely create anoxic conditions in the groundwater down-gradient of the ISRM treatability test site; however, the spatial extent of this anoxic plume is not exactly known.… more
Date: October 2, 1998
Creator: Mueller, R.P. & Geist, D.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Returning common sense to regulations

Description: While these sessions of the November 1995 meeting of the American Nuclear Society are being devoted to the Linear Theory of harm from radiation, it must be realized that the low-level radiation issue, as important as it may be, is but a subset of an entire body of environmental issues running afoul of common sense. Cellular phones, electromagnetic fields, asbestos, dioxin, acid rain, and others especially in their public portrayals, some in their regulatory treatment, are based upon exaggerated… more
Date: October 1, 1995
Creator: Fox, M. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

United States Transuranium and Uranium Registries: A human tissue research program. USTUR annual report for October 1, 1997 through January 31, 1999

Description: The United States Transuranium and Uranium Registries (USTUR) are a human tissue research program studying the deposition, biokinetics and dosimetry of the actinide elements in humans with the primary goals of providing data fundamental to the verification, refinement, or future development of radiation protection standards for these and other radionuclides, and of determining possible bioeffects on both a macro and subcellular level attributable to exposure to the actinides. This annual report… more
Date: October 1, 1999
Creator: Ehrhart, Susan M. (ed.) & Filipy, Ronald E. (ed.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final Report for Grant No. DE-FG02-98ER62583 ''Functional Analysis of the Genome Sequence of Deinococcus radiodurans''

Description: Extremophiles are nearly always defined with singular characteristics that allow existence within a singular extreme environment. The bacterium Deinococcus radiodurans qualifies as a polyextremeophile, showing remarkable resistance to a range of damage caused by ionizing radiation, dessication, ultraviolet radiation, oxidizing agents, and electrophilic mutagens. D. radiodurans is most famous for its extreme resistance to ionizing radiation; it not only can grow continuously in the presence of c… more
Date: October 15, 2003
Creator: Daly, Michael J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen