New Dosimetry at Hiroshima and Nagasaki and Its Implications for Risk Estimates PDF Download
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Author: National Council on Radiation Protection and Measurements. Meeting
Publisher:
ISBN:
Category : History
Languages : en
Pages : 268
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Book Description
Author: National Council on Radiation Protection and Measurements. Meeting
Publisher:
ISBN:
Category : History
Languages : en
Pages : 268
Get Book Here
Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309170982
Category : Science
Languages : en
Pages : 210
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Book Description
The Committee on Dosimetry for the Radiation Effects Research Foundation (RERF) was set up more than a decade ago at the request of the U.S. Department of Energy. It was charged with monitoring work and experimental results related to the Dosimetry System 1986 (DS86) used by RERF to reconstruct the radiation doses to the survivors in Hiroshima and Nagasaki. At the time it was established, DS86 was believed to be the best available dosimetric system for RERF, but questions have persisted about some features, especially the estimates of neutrons resulting from the Hiroshima bomb. This book describes the current situation, the gamma-ray dosimetry, and such dosimetry issues as thermal-neutron discrepancies between measurement and calculation at various distances in Hiroshima and Nagasaki. It recommends approaches to bring those issues to closure and sets the stage for the recently convened U.S. and Japan Working Groups that will develop a new dosimetry for RERF. The book outlines the changes relating to DS86 in the past 15 years, such as improved numbers that go into, and are part of, more sophisticated calculations for determining the radiations from bombs that reach certain distances in air, and encourages incorporation of the changes into a revised dosimetry system.
Author: Committee to Assess Health Risks from Exposure to Low Levels of Ionizing Radiation
Publisher: National Academies Press
ISBN: 0309133343
Category : Science
Languages : en
Pages : 422
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Book Description
This book is the seventh in a series of titles from the National Research Council that addresses the effects of exposure to low dose LET (Linear Energy Transfer) ionizing radiation and human health. Updating information previously presented in the 1990 publication, Health Effects of Exposure to Low Levels of Ionizing Radiation: BEIR V, this book draws upon new data in both epidemiologic and experimental research. Ionizing radiation arises from both natural and man-made sources and at very high doses can produce damaging effects in human tissue that can be evident within days after exposure. However, it is the low-dose exposures that are the focus of this book. So-called “late” effects, such as cancer, are produced many years after the initial exposure. This book is among the first of its kind to include detailed risk estimates for cancer incidence in addition to cancer mortality. BEIR VII offers a full review of the available biological, biophysical, and epidemiological literature since the last BEIR report on the subject and develops the most up-to-date and comprehensive risk estimates for cancer and other health effects from exposure to low-level ionizing radiation.
Author: T. Straume
Publisher:
ISBN:
Category : Cancer
Languages : en
Pages : 22
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Book Description
Author: D. K. (David Kenneth) Myers
Publisher:
ISBN:
Category :
Languages : en
Pages : 29
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309045371
Category : Science
Languages : en
Pages : 524
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Book Description
Do persons exposed to radiation suffer genetic effects that threaten their yet-to-be-born children? Researchers are concluding that the genetic risks of radiation are less than previously thought. This finding is explored in this volume about the children of atomic bomb survivors in Hiroshima and Nagasakiâ€"the population that can provide the greatest insight into this critical issue. Assembled here for the first time are papers representing more than 40 years of research. These documents reveal key results related to radiation's effects on pregnancy termination, sex ratio, congenital defects, and early mortality of children. Edited by two of the principal architects of the studies, J. V. Neel and W. J. Schull, the volume also offers an important comparison with studies of the genetic effects of radiation on mice. The wealth of technical details will be immediately useful to geneticists and other specialists. Policymakers will be interested in the overall conclusions and discussion of future studies.
Author: George D. Kerr
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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Book Description
The organ doses are calculated on an age-dependent basis as follows: infants (less than 3 years old at the time of bombing, ATB), children (3 to 12 years old ATB), and adults (more than 12 years old ATB). Work in progress includes the extention of the DS86 system to Nagasaki survivors who were shielded either by terrain or by factory buildings. The DS86 methods of dose estimation are discussed and the current DS86 results are compared with earlier dose estimates which were designated as Tentative 1965 Doses (T65D) and were used as a basis for risk assessment throughout the 1970's.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 40
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Book Description
An all important datum in risk assessment is the radiation dose to individual survivors of the bombings in Hiroshima and Nagasaki. The first set of dose estimates for survivors was based on a dosimetry system developed in 1957 by the Oak Ridge National Laboratory (ORNL). These Tentative 1957 Doses (T57D) were later replaced by a more extensive and refined set of Tentative 1965 Doses (T65D). The T65D system of dose estimation for survivors was also developed at ORNL and served as a basis for risk assessment throughout the 1970s. In the late 1970s, it was suggested that there were serious inadequacies with the T65D system, and these inadequacies were the topic of discussion at two symposia held in 1981. In early 1983, joint US- Japan research programs were established to conduct a thorough review of all aspects of the radiation dosimetry for the Hiroshima and Nagasaki A-bomb survivors. A number of important contributions to this review were made by ORNL staff members. The review was completed in 1986 and a new Dosimetry System 1986 (DS86) was adopted for use. This paper discusses the development of the various systems of A-bomb survivor dosimetry, and the status of the current DS86 system as it is being applied in the medical follow-up studies of the A-bomb survivors and their offspring.
Author: National Research Council
Publisher: National Academies
ISBN: 0309039959
Category : Science
Languages : en
Pages : 436
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Book Description
This book reevaluates the health risks of ionizing radiation in light of data that have become available since the 1980 report on this subject was published. The data include new, much more reliable dose estimates for the A-bomb survivors, the results of an additional 14 years of follow-up of the survivors for cancer mortality, recent results of follow-up studies of persons irradiated for medical purposes, and results of relevant experiments with laboratory animals and cultured cells. It analyzes the data in terms of risk estimates for specific organs in relation to dose and time after exposure, and compares radiation effects between Japanese and Western populations.
Author: Seymour Abrahamson
Publisher: Joseph Henry Press
ISBN: 0309174570
Category : Science
Languages : en
Pages : 399
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Book Description
In the decades since the atomic bombing of Hiroshima and Nagasaki, economic and political trends have opened avenues for radiation research while breakthroughs in molecular biology have shed light on radiation's effect on the human body. This volume comprehensively reviews what is now known about human exposure to ionizing radiation, with emphasis on unifying the scientific disciplines that inform this topic. Today's most widely recognized experts in the field examine four broad areas: Physics and dosimetry, including the various systems of A-bomb survivor dosimetry, the effect on survivors of subsequent medical radiation, and chromosome aberrations as biomarkers. Cancer statistics and epidemiology, including a historical review of leukemia risk in A-bomb survivors, the incidence of solid cancer and resulting mortality, and the results of studies of workers exposed to low-level radiation. Genetics, including the path from radiation exposure to cellular effects, carcinogenesis, and mutagenesis. Experts discuss the interaction between radiation and other cancer risk factors, review models of radiation-induced cancer, and report on other aspects of molecular biology. Psychological effects of radiation catastrophesâ€"as seen at Hiroshima and Nagasaki, Three Mile Island, and Chernobylâ€"and consequences of the Atomic Bomb Survivors Relief Law.
