Models of the Trapped Radiation Environment PDF Download

Author: James I. Vette
Publisher:
ISBN:
Category : Van Allen radiation belts
Languages : en
Pages : 100

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Author: COSPAR. Scientific Assembly
Publisher: Pergamon
ISBN:
Category : Science
Languages : en
Pages : 230

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Author: Olga A. Smirnova
Publisher: Springer Science & Business Media
ISBN: 1441972137
Category : Science
Languages : en
Pages : 220

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Themonographisdevotedtothetheoreticalstudiesofradiationeffectsonmammals. It summarizes the results obtained by the author over the past 30 years, most of them being of high priority. In the course of these studies, a single approach to the modeling of radiation effects on mammals has been elaborated. Speci?cally, in the framework of the developed deterministic mathematical models, the effects of both acute and chronic irradiation in a wide range of doses and dose rates on vital body systems (hematopoiesis, small intestine, and humoral immunity), as well as on the development of autoimmune diseases, are investigated. The radiation effects on the mortality dynamics in homogeneous and nonhomogeneous(in radiosensitivity) mammalian populations are also studied by making use of the developed stochastic models. The most appealing feature of these mortality models consists of the fact that they account for the intrinsic properties of the exposed organism. Namely, within these models the stochastic biometrical functions are calculated proceeding from statistical characteristics and dynamics of the respective critical body system (hematopoiesis or small intestine). The performed theoretical investigations contribute to the development of the system and quantitative approaches in radiation biology and ecology. These studies elucidate the major regulatory mechanisms of the damage and recovery processes running in the vital body systems of exposed mammals and reveal the key par- eters characterizing the processes.

Author: L. Heilbronn
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 200

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Author: Committee on an Assessment of CDC Radiation Studies
Publisher: National Academies Press
ISBN: 0309587131
Category : Medical
Languages : en
Pages : 151

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Growing public concern about releases of radiation into the environment has focused attention on the measurement of exposure of people living near nuclear weapons production facilities or in areas affected by accidental releases of radiation. Radiation-Dose Reconstruction for Epidemiologic Uses responds to the need for criteria for dose reconstruction studies, particularly if the doses are to be useful in epidemiology. This book provides specific and practical recommendations for whether, when, and how studies should be conducted, with an emphasis on public participation. Based on the expertise of scientists involved in dozens of dose reconstruction projects, this volume Provides an overview of the basic requirements and technical aspects of dose reconstruction. Presents lessons to be learned from dose reconstructions after Chernobyl, Three Mile Island, and elsewhere. Explores the potential benefits and limitations of biological markers. Discusses how to establish the "source term"--that is, to determine what was released. Explores methods for identifying the environmental pathways by which radiation reaches the body. Offers details on three major categories of dose assessment.

Author: John R. Cooper
Publisher: John Wiley & Sons
ISBN: 9780471899242
Category : Science
Languages : en
Pages : 500

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Book Description
- Thema des Bandes ist die Radioaktivität in der Umwelt (Herkunft, Transport, Messung) - einziges Buch auf dem Markt, das sich derart ausführlich nur mit diesem Thema beschäftigt - wendet sich an breitgefächertes Leserspektrum (Studenten, Dozenten, Forscher, Unternehmen, Berater) - Interesse am Einfluß menschlicher Tätigkeit auf die Umwelt nimmt ständig zu

Author: Dinesh Kumar Aswal
Publisher: Springer Nature
ISBN: 9819727952
Category :
Languages : en
Pages : 700

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Author: Victoria L. Korogodina
Publisher: Springer Science & Business Media
ISBN: 9400766300
Category : Technology & Engineering
Languages : en
Pages : 199

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In recent decades radiobiologists’ efforts have been directed at identifying the mechanisms of radiation effects; the general mechanisms have since been studied extensively. This book describes and analyzes radiation-induced adaptation as processes produced in cells, tissues, and populations. This viewpoint helps to understand the nature and factors of induced processes, to determine the characteristics of observed radiation effects and their limitations. The investigations presented here were founded on proper lab experiments, ecological studies of plant population growth near an operating nuclear power plant and a thorough epidemiological examination of human populations living in territories polluted fifty years ago, as well as on relevant published data. This research demonstrates the radiation-induced adaptation processes that continue even when the radiation itself is no longer at a critical background level. The investigations utilized the method of statistical modeling on the basis of distributions on the number of abnormalities. This method allows us to investigate the processes induced by low-dose factors when accompanied by Darwinian selection in different systems; the distribution parameters can then be used to study the characteristics of adaptation processes and system resistance. The consequences of background-level radiation continue to provoke debate, and the mathematical bases of the adaptation model are shown, while due consideration is paid to the components of adaptation: instability, selection, and proliferation. The book will be especially useful to specialists in radiation pollution, ecology, epidemiology, and radiology for studies of radiation-induced processes; the method presented here can also be adapted to investigate low-dose effects in other fields. In addition, the book presents a number of reviews in the fields of radiation biology, including pioneering investigations in Russia which were previously unavailable to Western scientists.

Author: Eleanor A. Blakely
Publisher:
ISBN:
Category : Astronauts
Languages : en
Pages : 208

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"This symposium was organized to bring together the multidisciplinary expertise required to assess risk of exposure to space radiation.... Topics addressed ranged from what is known or predicted about radiation environments for human exploration, and what shielding would be required based on ALARA radiation protection guidelines. The development of new physics cross section models, and improved ion beam transport codes was reported, as well as biological demonstrations of the consequences of specific shielding materials and applications to manned missions to Mars and beyond. Advancements in the biological measurements of radiation-induced protein expression profiles, membrane damage, bystander effect, and adaptive response were presented, and countermeasures evaluated. Finally several presentations addressed specific approaches to integrate the physical and biological parameters in order to assess key elements of the risk and the associated uncertainties."--Page 1277.

Author: National Research Council
Publisher: National Academies Press
ISBN: 0309056772
Category : Medical
Languages : en
Pages : 53

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