Results 261 to 270 of about 365,633 (275)
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Microdosimetric Interpretation of the Dose and Dose Rate Efficiency Coefficient
Atomic Energy, 2017A model of a hypothetical process resulting in damage to DNA by ionizing radiation, as a result of which a nonlinear dose dependence of carcinogensis can form at dose 10–100 mGy, is examined on the basis of a microdosimetric approach. The model assumes that the primary damage to DNA interacts with short-lived products of irradiation before the DNA is ...
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DOSE COEFFICIENTS FOR INTAKES OF RADIONUCLIDES VIA CONTAMINATED WOUNDS
Health Physics, 2011The NCRP Wound Model, which describes the retention of selected radionuclides at the site of a contaminated wound and their uptake into the transfer compartment, has been combined with the ICRP element-specific systemic models for those radionuclides to derive dose coefficients for intakes via contaminated wounds.
R E, Toohey +4 more
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Reassessment of tritium dose coefficients for the general public
Radiation Protection Dosimetry, 2007Concerns of increased risk from tritium intake by humans have been claimed in the past. The arguments concerning the radiobiological effectiveness of tritium, its longer retention in the human body and the presence of tritium in the DNA hydration shell are analysed in this paper.
A, Melintescu, D, Galeriu, H, Takeda
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Fluence-to-effective dose conversion coefficients for male astronauts
Journal of Radiological Protection, 2019The problem of the reliable estimation of astronauts' radiation exposure doses in deep space is very important and relevant in connection with the accepted space research programmes. The effective dose value based on ICRP Publication 103 presents too conservative an estimate of an astronaut's radiation risk.
G N Timoshenko, M I Belvedersky
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New calculations of neutron kerma coefficients and dose equivalent
Journal of Radiological Protection, 2008For neutron energies ranging from 1 keV to 20 MeV, the kerma coefficients for elements H, C, N, O, light water, and ICRU tissue were deduced respectively from microscopic cross sections and Monte Carlo simulation (MCNP code). The results are consistent within admitted uncertainties with values evaluated by an international group (Chadwick et al 1999 ...
Zhenzhou, Liu, Jinxiang, Chen
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Averaged particle dose conversion coefficients in air crew dosimetry
Radiation Protection Dosimetry, 2004The MCNPX Monte Carlo code was used to calculate energy-dependent fluence-to-effective dose conversion coefficients for neutrons, protons, electrons, photons, charged pions and muons. The FLUKA Monte Carlo code was used to calculate the spectral particle fluences of secondary cosmic rays for different altitudes, and for different combinations of solar ...
V, Mares, S, Roesler, H, Schraube
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Journal of Nuclear Science and Technology, 1999
The conversion coefficients from photon fluence to ambient dose equivalent, H* (10) and effective doses were calculated for photons up to 10 GeV. A Monte Carlo code EGS4 was used for these calculations and secondary particle transports were considered. The calculated ambient dose equivalents were compared to the calculated effective doses.
Osamu SATO +7 more
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The conversion coefficients from photon fluence to ambient dose equivalent, H* (10) and effective doses were calculated for photons up to 10 GeV. A Monte Carlo code EGS4 was used for these calculations and secondary particle transports were considered. The calculated ambient dose equivalents were compared to the calculated effective doses.
Osamu SATO +7 more
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Uncertainties in Dose Coefficients for Systemic Plutonium
Radiation Protection Dosimetry, 1998Uncertainties associated with ingestion and injection dose coefficients for plutonium are estimated by performing a parameter uncertainty analysis on the dosimetric model of ICRP Publication 67. Probability distributions are assigned to important model parameters which were identified by a previous sensitivity study.
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