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Author: National Council on Radiation Protection and Measurements
Publisher: Ncrp
ISBN:
Category : Science
Languages : en
Pages : 248
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Book Description
Author: National Council on Radiation Protection and Measurements
Publisher: Ncrp
ISBN:
Category : Science
Languages : en
Pages : 248
Get Book Here
Book Description
Author:
Publisher:
ISBN: 9780929600048
Category : Diagnostic imaging
Languages : en
Pages : 227
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Book Description
Author: NCRP.
Publisher:
ISBN:
Category :
Languages : en
Pages : 236
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Book Description
Author: National Council on Radiation Protection and Measurements
Publisher:
ISBN: 9780929600048
Category : Radiation
Languages : en
Pages : 227
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Book Description
Author: National Council on Radiation Protection and Measurements
Publisher:
ISBN: 9781944888152
Category : Central nervous system
Languages : en
Pages :
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Book Description
"This Report has been prepared at the request of the National Aeronautics and Space Administration (NASA). It is the second phase of a two-phase effort intended to provide guidance to NASA concerning the health effects and mission impacts of space radiation exposure on the central nervous system (CNS) of crew members. The first phase of effort resulted in the National Council on Radiation Protection and Measurements (NCRP) Commentary No. 25, Potential for Central Nervous System Effects from Radiation Exposure During Space Activities. Phase I: Overview, which described the critical issues surrounding the potential short- and long-term consequences of space radiation on the CNS and laid the groundwork for a more comprehensive investigation that is the basis of this Report. This Report summarizes the steps and approaches needed to more fully understand the risk of CNS effects following radiation exposures in space and provides guidance for radiation protection, including risk management. NCRP has identified knowledge gaps regarding the implementation of a comprehensive and effective radiation safety program to protect astronauts against the potential for early and late CNS effects from space radiation"--
Author: National Council on Radiation Protection and Measurements
Publisher: National Council on Radiation Protection & Measurements
ISBN:
Category : Biography & Autobiography
Languages : en
Pages : 232
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Book Description
Author: National Council on Radiation Protection and Measurements
Publisher:
ISBN:
Category : Diagnostic imaging
Languages : en
Pages :
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309074991
Category : Science
Languages : en
Pages : 89
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Book Description
NASA's long-range plans include possible human exploratory missions to the moon and Mars within the next quarter century. Such missions beyond low Earth orbit will expose crews to transient radiation from solar particle events as well as continuous high-energy galactic cosmic rays ranging from energetic protons with low mean linear energy transfer (LET) to nuclei with high atomic numbers, high energies, and high LET. Because the radiation levels in space are high and the missions long, adequate shielding is needed to minimize the deleterious health effects of exposure to radiation. The knowledge base needed to design shielding involves two sets of factors, each with quantitative uncertaintyâ€"the radiation spectra and doses present behind different types of shielding, and the effects of the doses on relevant biological systems. It is only prudent to design shielding that will protect the crew of spacecraft exposed to predicted high, but uncertain, levels of radiation and biological effects. Because of the uncertainties regarding the degree and type of radiation protection needed, a requirement for shielding to protect against large deleterious, but uncertain, biological effects may be imposed, which in turn could result in an unacceptable cost to a mission. It therefore is of interest to reduce these uncertainties in biological effects and shielding requirements for reasons of mission feasibility, safety, and cost.
Author: National Council on Radiation Protection and Measurements
Publisher:
ISBN: 9781680154474
Category : Radiation
Languages : en
Pages :
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309174902
Category : Science
Languages : en
Pages : 88
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Book Description
NASA's long-range plans include possible human exploratory missions to the moon and Mars within the next quarter century. Such missions beyond low Earth orbit will expose crews to transient radiation from solar particle events as well as continuous high-energy galactic cosmic rays ranging from energetic protons with low mean linear energy transfer (LET) to nuclei with high atomic numbers, high energies, and high LET. Because the radiation levels in space are high and the missions long, adequate shielding is needed to minimize the deleterious health effects of exposure to radiation. The knowledge base needed to design shielding involves two sets of factors, each with quantitative uncertaintyâ€"the radiation spectra and doses present behind different types of shielding, and the effects of the doses on relevant biological systems. It is only prudent to design shielding that will protect the crew of spacecraft exposed to predicted high, but uncertain, levels of radiation and biological effects. Because of the uncertainties regarding the degree and type of radiation protection needed, a requirement for shielding to protect against large deleterious, but uncertain, biological effects may be imposed, which in turn could result in an unacceptable cost to a mission. It therefore is of interest to reduce these uncertainties in biological effects and shielding requirements for reasons of mission feasibility, safety, and cost.
