Zobrazeno 1 - 10
of 112
pro vyhledávání: '"R. N. Hamm"'
Publikováno v:
Radiation and Environmental Biophysics. 40:33-38
Radiation-induced damage in nucleosomal DNA was modelled by Monte Carlo means. An atomistic representation of DNA with a first hydration shell was used. DNA single- and double-strand break (SSB and DSB) yields were calculated for 137Cs photons, x-ray
Publikováno v:
Radiation and Environmental Biophysics. 37:157-166
The radiation chemistry of photon-irradiated aqueous solutions of biological molecules may be considered under four distinct time regimes: physical transport (or = 10(-15) s); prechemical conversion of H2O+, H2O*, and subexcitation electrons into fre
Publikováno v:
Radiation and Environmental Biophysics. 36:229-234
In Monte Carlo simulations of water radiolysis, the diffusion of reactants can be approximated by "jumping" all species randomly, to represent the passage of a short period of time, and then checking their separations. If, at the end of a jump, two r
Autor:
R. H. Ritchie, W.E. Bolch, K. Bruce Jacobson, R. N. Hamm, Harvel Wright, James E. Turner, C.E. Klots, H. Yoshida
Publikováno v:
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes. 42:995-1001
For the first time, a complete computer simulation of physical and chemical reactions at the molecular level has been used to calculate the yield of a chemical species resulting from irradiation of a biological molecule in aqueous solution. Specifica
Autor:
R. H. Ritchie, Werner Friedland, Herwig G. Paretzke, Michael Dingfelder, R. N. Hamm, James E. Turner
Publikováno v:
Radiat. Res. 169, 584-594 (2008)
Monte Carlo computer models that simulate the detailed, event-by-event transport of electrons in liquid water are valuable for the interpretation and understanding of findings in radiation chemistry and radiation biology. Because of the paucity of ex
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https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=2324
https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=2324
Publikováno v:
Radiation Protection Dosimetry. 32:157-162
The conceptual framework is described for a new type of neutron spectrometer, based on the recently demonstrated principle of optical detection of charged particle tracks in a gas. Whereas the elastic scattering of a neutron gives rise to the single
Publikováno v:
Radiation Protection Dosimetry. 31:43-46
Detailed-history Monte Carlo computer codes were used to simulate the formation, diffusion, and chemical reaction of free radical species within deoxygenerated solutions of glycylglycine irradiated 250 kVp X rays and by 60Co ? rays. In one reaction,
Publikováno v:
Radiation and environmental biophysics. 40(1)
Radiation-induced damage in nucleosomal DNA was modelled by Monte Carlo means. An atomistic representation of DNA with a first hydration shell was used. DNA single- and double-strand break (SSB and DSB) yields were calculated for 137Cs photons, x-ray
Publikováno v:
Radiation Protection Dosimetry. 31:29-31
The Monte Carlo method may be used to simulate chemical reactions occurring in the track of a charged particle. We compare these simulations with predictions of solutions to the diffusion equation. Conditions are delineated when the latter may be use
Publikováno v:
International journal of radiation biology. 74(5)
To model the production of single- and double-strand breaks (ssb and dsb) in DNA by ionizing radiations. To compare the predicted effectiveness of different energy photon radiations and tritium beta-particles.Modelling is carried out by Monte Carlo a