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The Revised International Commission on Radiological Protection (ICRP) dosimetric model for the human respiratory tract

Description: The new respiratory tract model is based on the premise that the large differences in radiation sensitivity of respiratory tract tissues, and the wide range of doses they receive, argue for calculating specific tissue doses rather than average lung doses for radiation protection purposes. The new model is more complex than the current lung model because it describes deposition of inhaled radioactive material in the clearance from several tissues and regions of the respiratory tract and is appli… more
Date: September 1, 1991
Creator: Bair, W.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Experimental, statistical, and biological models of radon carcinogenesis

Description: Risk models developed for underground miners have not been consistently validated in studies of populations exposed to indoor radon. Imprecision in risk estimates results principally from differences between exposures in mines as compared to domestic environments and from uncertainties about the interaction between cigarette-smoking and exposure to radon decay products. Uncertainties in extrapolating miner data to domestic exposures can be reduced by means of a broad-based health effects resear… more
Date: September 1, 1991
Creator: Cross, F. T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A study of detailed dosimetry records for a selected group of workers included in the Hanford mortality study

Description: Detailed dosimetry data from microfiche and microfilm in source records for the years 1944--1978 for 139 Hanford workers were examined. Information on these records was compared with computerized dose equivalent estimates used in mortality analyses. Because of difficulties in reading some early source records, and because of variation in the format of records and in algorithms for calculating whole body dose, this validation was difficult. However, apparent discrepancies in cumulative dose were… more
Date: September 1, 1990
Creator: Gilbert, E. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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USA/CIS coordinating committee and its hydrologic studies

Description: The United States and the former Soviet Union (now the Commonwealth of Independent States) have set up the Joint Coordinating Committee on Civilian Nuclear Reactor Safety (JCCCNRS) to enhance safe operation of civilian nuclear reactors. The agreement contains Section 7.1, Environmental Transport,'' and Section 7.2 Health Impacts.'' Main objectives of the programs under JCCCNRS are to test and improve methodologies, mathematical models, technologies, and techniques need to understand and to more… more
Date: September 1, 1992
Creator: Onishi, Y.; Petrie, G.M.; Vail, L.W. (Pacific Northwest Lab., Richland, WA (United States)); Voytscekhovitch, O.V. (Ukrainskiy Nauchno-Issledovatel'skiy Gidrometeorologicheskiy Inst., Kiev (Ukraine)); Zheleznyak, M.J. (AN Ukrainskoj SSR, Kiev (Ukraine). Inst. Kibernetiki); Shershakov, V.M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Radium in humans: A review of U.S. studies

Description: This document was originally conceived as a compilation of activities at Argonne National Laboratory that were directed toward the study of radium in humans. However, it soon became obvious that this was a very limited approach, because such a compilation would include no background on the widespread uses of radium in industry and in the medical profession, nor would it address the early history of the discovery of the hazards of radium. Such an approach would also ignore contributions to the s… more
Date: September 1, 1994
Creator: Rowland, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mechanisms for radiation damage in DNA. Progress report, January 1, 1980-December 31, 1980

Description: In this project several mechanisms are proposed for radiation damage to DNA constituents and DNA, and a series of experiments detailed utilizing electron spin resonance spectrometry to test the proposed mechanisms. Under current investigation are irradiated systems of DNA constituents which may shed light on indirect effects. In addition, studies of radiation effects on lipids have been undertaken which will shed light on the only other proposed site for cell kill, the membrane. Studies complet… more
Date: September 1, 1980
Creator: Sevilla, M D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

USA/CIS coordinating committee and its hydrologic studies

Description: The United States and the former Soviet Union (now the Commonwealth of Independent States) have set up the Joint Coordinating Committee on Civilian Nuclear Reactor Safety (JCCCNRS) to enhance safe operation of civilian nuclear reactors. The agreement contains Section 7.1, ``Environmental Transport,`` and Section 7.2 ``Health Impacts.`` Main objectives of the programs under JCCCNRS are to test and improve methodologies, mathematical models, technologies, and techniques need to understand and to … more
Date: September 1, 1992
Creator: Onishi, Y.; Petrie, G. M.; Vail, L. W.; Voytscekhovitch, O. V.; Zheleznyak, M. J.; Shershakov, V. M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Radiation induced reproductive death as a function of mammalian cell ploidy

Description: Mammalian cells containing different multiples of the diploid chromosome set were created through drug induction and cell fusion. In all cell strains used the chromosome number was determined from metaphase spreads, as well as from DNA content and cell size. The survival of cells as a function of radiation dose was determined for cell lines with differing chromosome complements at 37/sup 0/C, 4/sup 0/C, in hypertonic media, while frozen, and with increasing levels of incorporated IUdR. Survival… more
Date: September 1, 1976
Creator: Philbrick, David Alan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Genetic effects of low x-ray doses. Progress report, October 1, 1975--September 30, 1976. [Drosophila oogonia]

Description: Experiments on dose-kinetics of x-ray induced sexlinked lethal mutations in Drosophila oogonia were continued. A wide range of doses was tested, with special emphasis on the low-dose range (20 to 500R). This year more data were added for O R, 200, 500, 1500R and some high doses. Oogonia of adult females were irradiated, and only one daughter from each experimental parent-female was analyzed for a new lethal in her maternal X-chromosome. Thus no clusters of mutations of identical origin are enco… more
Date: September 1, 1976
Creator: Abrahamson, S. & Meyer, H. U.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Environmental Assessment for moving the Pacific Northwest Laboratory radon generators from Life Sciences Laboratory II, Richland North Area, to Life Sciences Laboratory I, 300 Area, and their continued use in physical and biological research

Description: The Pacific Northwest Laboratory (PNL) radon generators are a core resource of the overall U. S. Department of Energy`s (DOE) Radon Research Program and are administratively controlled within the ``Radon Hazards in Homes`` project. This project primarily focuses on radon exposures of animals and addresses the major biologic effects and factors influencing risks of indoor radon exposures. For example, the ``Mechanisms of Radon Injury`` and ``In vivo/In vitro Radon-Induced Cellular Damage`` proje… more
Date: September 1, 1993
Creator: Nelson, I. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Role of DNA deletion length in mutation and cell survival

Description: A model based on the assumption that malignant transformation, mutation, chromosome aberration, and reproductive death of cells are all manifestations of radiation induced deletions in the DNA of the cell; and that the size of the deletion in relation to the spacing of essential genes determines the consequences of that deletion, is presented. It is assumed that two independent types of potentially lethal lesions can result in DNA deletions, and that the relative numbers of these types of damag… more
Date: September 1, 1991
Creator: Brady, L. A. & Morgan, T. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The effects of ionizing radiation on aquatic organisms

Description: Scientific Committee {number sign}64-6 of the National Council on Radiation Protection (NCRP) of the United States has recently completed a review of the literature on the effects of ionizing radiation on aquatic organisms (NCRP 1990). In this report, the NCRP provides guidance for a dose rate below which deleterious effects to aquatic organisms are acceptably low; reviews a series of simple dosimetric models that can be applied to demonstrate compliance with such a dose rate; provides examples… more
Date: September 1, 1990
Creator: Templeton, W. L. & Baylock, B. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Utilization of dose assessment models to facilitate off-site recovery operations for accidents at nuclear facilities

Description: One of the most important uses of dose assessment models in response to accidents at nuclear facilities is to help provide guidance to emergency response managers for identifying, and mitigating, the consequences of an accident once the accident has been terminated. By combining results from assessment models with radiological measurements, a qualitative methodology can be developed to aid emergency response managers in determining the total dose received by the population and to minimize futur… more
Date: September 1, 1989
Creator: Dickerson, Marvin H. & Foster, Kevin T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Theory of RBE. Progress report, January 1, 1977--December 1977. [X Radiation, Electrons, Neutrons, Gamma Radiation]

Description: Emulsion-processing combinations have been found which match the response of mammalian cells to x-rays. The grain size of these emulsions is in the implied range of sensitive element sizes in biological cells. The fading of the latent image may parallel biological repair. In consequence studies are under way of the variation in emulsion response to low LET radiations of different quality, of ''Elkind repair'', and of dose fractionation. Predictions of OER and RBE of mammalian cells to high LET … more
Date: September 1, 1977
Creator: Katz, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Theory of RBE. Progress report, 1 January 1976--31 December 1976

Description: Experimental studies of emulsion-processing combinations have demonstrated that a range of hittedness, from 1 to 8-or-more, can be achieved with specially processed nuclear research emulsions of the Ilford K series, encompassing the range of supralinear response displayed by biological cells. In analogy with the response of biological cells to high LET radiations, the processes of ion-kill and gamma-kill have been displayed for these emulsions, in that x-rays blacken emulsion in circumstances t… more
Date: September 1, 1976
Creator: Katz, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Introduction and fundamentals: Lecture No. 2. Course on advances in radiation, International School of Radiation Damage and Protection, Erice, Italy, September 1979

Description: This lecture discusses advances in the fundamental sciences which underlie that science variously called health physics or radiation. Some of the underlying assumptions of radiation protection are discussed, and some developments in the radiological sciences since 1975 described. (ACR)
Date: September 1, 1979
Creator: Thomas, Ralph H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A vital legacy: Biological and environmental research in the atomic age

Description: This booklet presents a summary of the five decades of biological and environmental research in the atomic age. It commemorates the contributions to science and society during these decades and concludes with a view to the years ahead. The Contents includes `Safety First: in the Shadow of a New Technology; A Healthy Citizenry: Gifts of the New Era; and Environmental Concerns: From Meteorology to Ecology`. The conclusion is titled `An Enduring Mandate: Looking to the Future`.
Date: September 1, 1997
Creator: Vaughan, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Energy deposition and radiation quality of radon and radon daughters. Final report

Description: This program was aimed at creating a quantitative physical description, at the micrometer and nanometer levels, of the physical interactions of the alpha particles from radon and its daughters with cells at risk in the bronchial epithelium. The authors calculated alpha-particle energy spectra incident upon the cells and also energy deposition spectra in micrometer- and nanometer-sized sites as a function of cell depth, site size, airway diameter, activities of {sup 218}Po and {sup 214}Po, and o… more
Date: September 9, 1996
Creator: Karam, L.R. & Caswell, R.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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