Results 211 to 220 of about 121,812 (260)

A polystyrene absorbed-dose-rate calorimeter

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1987
A simple portable calorimeter was constructed by embedding a calibrated thermistor on the axis of a polystyrene rod. This instrument was positioned on the axis of a cylindrical array of 60 Co rods. The duration of the measurements was ∼ 70 s. Absorbed dose rates of ∼ 70 Gy/min were measured to a daily precision of several tenths of a percent standard ...
Steve R. Domen, Wei-Zhen B.A.
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A Geochemical Assessment of Terrestrial Gamma-ray Absorbed Dose Rates

Health Physics, 1990
A survey of the geochemical literature and unpublished data has resulted in the classification of the concentrations of the naturally occurring radioelements U, Th, and K by their associated rock types. A data base of over 2500 entries has been compiled, permitting calculation of terrestrial gamma-ray absorbed dose rates.
H A, Wollenberg, A R, Smith
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Inter-comparison of absorbed dose rates for non-human biota

Radiation and Environmental Biophysics, 2007
A number of approaches have been proposed to estimate the exposure of non-human biota to ionizing radiation. This paper reports an inter-comparison of the unweighted absorbed dose rates for the whole organism (compared as dose conversion coefficients, or DCCs) for both internal and external exposure, estimated by 11 of these approaches for selected ...
Vives i Batlle, J., Balonov, N., Beaugelin-Seiller, K., Beresford, N. A., Brown, J., Cheng, J.-J., Copplestone, D., Doi, M., Filistovic, V., Golikov, V., Horyna, J., Hosseini, A., Howard, B. J., Jones, S. R., Kamboj, S., Kryshev, A, Nedveckaite, T., Olyslaegers, G., Pröhl, G., Sazykina, T., Ulanovsky, A., Vives Lynch, S., Yankovich, T., Yu, C.   +23 more
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The Relation of Dose Rate of Microwave Radiation to the Time of Death and Total Absorbed Dose in the Mouse

Journal of Microwave Power, 1976
This experiment demonstrates that for microwave radiation, absorbed dose determination alone is not dosimetrically sufficient. The average absorbed dose to death in this experiment increases as the rate of absorption decreases. This observation is not surprising since microwave energy produces heating of the biological tissues.
R, Rugh, H, Ho, M, McManaway
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Distribution of absorbed dose rate on equipment with electron accelerators

Soviet Atomic Energy, 1987
The authors construct a statistical model for calculating the absorbed dose rate distribution over the surface of an electron beam foil target in an accelerator for given output parameters of the accelerator which regards the foil as a source of radiation with a definite angular distribution and constant electron flux density leave a unit area of the ...
B. I. Rubin, G. Z. Gochaliev
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Linear relationship between absorbed radiation dose and pulse rate during fluoroscopy

World Journal of Urology, 2022
To identify the relationship between fluoroscopy pulse rate and absorbed radiation dose. We compared absorbed radiation dose with common proxy measurements such as fluoroscopy time and C-arm reported dose.Using a simulated patient model, 60 s fluoroscopy exposures were performed using pulse rates of 30, 8, 4, 2, and 1 pulse(s) per second.
Todd S, Yecies, Brian, Chun, Michelle J, Semins, Rajeev, Chaudhry   +3 more
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Absorbed Dose Rate Due to K Radiation

Radiation Protection Dosimetry, 1989
Des mesures effectuees dans des centrales nucleaires en Allemagne montrent de frequentes contaminations par des quantites importantes de radioisotopes que la capture κ affaiblit. Pour estimer leurs effets sur les employes la dose de radiation κ est calculee et comparee avec celle de radiation γ et ...
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Absorbed-dose/dose-rate dependence studies for the alanine-EPR dosimetry system

Radiation Physics and Chemistry, 2009
Abstract Over the course of the last decade, routine monitoring of the alanine dosimetry system revealed a small but significant observation that, after examination, led to the characterization of a previously unknown absorbed-dose-dependent, dose-rate effect for the alanine system.
M.F. Desrosiers, J.M. Puhl
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Modelling the absorbed dose rate of the beta standard BSS2 147Pm source

Applied Radiation and Isotopes, 2018
The dosimetric measurements of 147Pm beta radiation beams have limitations due to their low energy, low dose rate, great dispersion and attenuation in air or tissue. In this work, the Monte Carlo model was developed for a 147Pm absorbed dose rate determination. This model consists of an extrapolation chamber and a 147Pm beta radiation source. Moreover,
Ivón Oramas, Polo, William Souza, Santos, Linda V E, Caldas   +2 more
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Diagnostic absorbed dose and dose rate to thyroid remnant

Nuclear medicine communications, 1997
No abstract available.
Pavlinović, Željka, Dodig, Damir, Popović, Slavko, Grošev, Darko, Medvedec, Mario   +4 more
openaire   +1 more source