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Abstract  

4-Iodoantipyrine was synthesised from phenazone, labeled with123I and administered to cells in culture. 4-[123I]iodoantipyrine carries the radionuclide across the cell membrane allowing one to study the biological effects of the very short ranged Auger electrons emitted by this isotope. The formulation used to prepare this compound proves to be free of reagents that may have an adverse effect on the mitotic activity of cells in culture. By observing micronuclei frequencies in human lymphocytes and CHO-K1 cells the high-LET characteristics of Auger electrons could be demonstrated. Compared to extracellular disintegrations from [123I]NaI and123I-human serum albumin, a substantial reduction in the variation in radiosensitivity of these cell types was noted when treated with 4-[123I] iodoantipyrine.

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Journal of Radioanalytical and Nuclear Chemistry
Authors:
J. Planinić
,
G. Šmit
,
Z. Faj
,
B. Šuveljak
,
B. Vuković
, and
V. Radolić

Abstract  

Indoor radon concentrations were measured in 10 821 pupils primary schools of Osijek by means of the Radhome silicon detector. The values ranged from 15 to 300 Bq/m3 with the arithmetic and geometric means of 93.4 and 70.6 Bq/m3, respectively. Ten years continuous radon measurements performed with the LR-115 nuclear track detector in three houses of different construction and town area gave means of 27, 96 and 23 Bq/m3; the indoor Rn concentration for a heating period was a factor of 1.5 higher than for the warm season. The average effective dose equivalent for the primary school pupils was 2.8 mSv/y (with occupancy factors of 0.6, 0.2 and 0.2 for home, school and outdoors, respectively). For citizens of Osijek it was 1.7 mSv/y.

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