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Your search keyword '"Hristova, R."' showing total 3 results
Start Over Author "Hristova, R." Topic irradiation
3 results on '"Hristova, R."'

2. Molecular-Dynamic Modeling of Thermophysical Processes in Metals Irradiated by Nanoclusters.

Author

Batgerel, B., Dimova, S. N., Kupenova, T. N., Puzynin, I. V., Puzynina, T. P., Tukhliev, Z. K., Hristov, I. G., Hristova, R. D., and Sharipov, Z. A.

Subjects
MOLECULAR dynamics, THERMOPHYSICAL properties, METALS, IRRADIATION, MATHEMATICAL models
Abstract

When nanoclusters irradiate a metal target a large amount of energy is realized in a small volume which leads to structural changes in metal. These changes can be a consequence of thermal processes or of elastic repulsions of target atoms. The experimental studies fixe the results of these structural changes in the target. The application of methods of mathematical modeling allows to ”see” the dynamics of the irradiation process, including thermal and structural changes. Therefore, the mathematical modeling remains an important tool for such studies. One of such methods for modeling thermal processes in metals irradiated by nanoclusters is the method of molecular dynamics. [ABSTRACT FROM AUTHOR]

Published
2019
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3. THE MICRONUCLEI FREQUENCY AS A BIOLOGICAL DOSIMETER OF ABSORBED DOSE IN CASE OF RADIATION ACCIDENTS.

Author

Atanasova, P., Hadjidekova, V., Staynova, A., and Hristova, R.

Subjects
*DOSIMETERS, *BIOMARKERS, *GENE frequency, *LYMPHOCYTES, *NUCLEIC acids, *IRRADIATION, *COMPUTER software, *QUADRATIC equations, *MATHEMATICAL formulas
Abstract

The scoring of micronuclei in human peripheral blood lymphocytes is used as a biomarker and dosimeter of radiation exposure. In this paper we investigated a dose response curve for micronuclei in human lymphocytes following Cs-137 irradiation in vitro. The lymphocytes were obtained from 7 different donors aged between 24 and 51 years. The applied doses were: 0.0, 0.05, 0.1, 0.25, 0.5, 0.75, 1.0, 1.5, 2.0, 3.0 and 4.0 Gy. There was an increase of micronuclei frequency MN with the dose. The dose-effect relationship was expressed with the following linear-quadratic equation Y = 20,56 + 39,59.D + 17,01.D², where (Y)-represents the micronuclei yield, (D)-represents the applied radiation dose. A software program for absorbed dose assessment based on this equation was created. [ABSTRACT FROM AUTHOR]

Published
2009

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