Zobrazeno 1 - 10
of 35
pro vyhledávání: '"A. S. Podol'tsev"'
Autor:
P. N. Malashevich, A. V. Kovkova, I. V. Yamaikina, O. I. Pashkevich, E. G. Volkova, A. S. Podol’tsev
Publikováno v:
Journal of Engineering Physics and Thermophysics. 81:1207-1213
As a result of the first session of intravenous laser irradiation of blood, it has been established that changes in the blood cellular elements, according to the data of cytometry, and in the blood and plasma viscosity are analogous to the changes oc
Autor:
G. I. Zheltov, A. S. Podol’tsev
Publikováno v:
Optics and Spectroscopy. 102:142-146
A mathematical model of the photodestructive effect of high-power IR laser radiation on cornea tissues is presented. The threshold energy exposure is calculated as a function of the wavelength and the laser pulse duration in the range 10−5–10−1
Autor:
A. S. Podol’tsev
Publikováno v:
Journal of Engineering Physics and Thermophysics. 78:969-974
A method of calculating the concentration of a thermally denaturated protein in a site formed on eye tissue under the action of laser radiation is proposed. It is shown that this method allows one to determine the position of the indicated site in re
Autor:
E. Yu. Luk'yanova, A. S. Podol’tsev
Publikováno v:
Journal of Engineering Physics and Thermophysics. 76:715-721
A nonlinear mathematical model of blood flow in a vessel has been constructed where blood is considered as a suspension with aggregating and deformable particles and vessel walls possess elasticity according to the Hooke law. The blood viscosity, whi
Autor:
A. S. Podol’tsev, G. I. Zheltov
Publikováno v:
Journal of Engineering Physics and Thermophysics. 75:964-969
The temperature fields in the refractive eye tissues at a different focusing of near IR laser radiation have been determined numerically. Depending on the focusing and the radiation wavelength, the levels and regions of localization of the maximum he
Autor:
Z. P. Shul’man, A. S. Podol’tsev
Publikováno v:
Journal of Engineering Physics and Thermophysics. 72:422-429
A mathematical model of blood flow in arterial vessels with account for the nonstationary character of the laminar flow and the time-varying pressure drop is considered. The viscosity of blood is assumed to obey a power law. The rheological propertie
Autor:
A. S. Podol’tsev
Publikováno v:
Journal of Engineering Physics and Thermophysics. 69:338-340
A series of experimental data on threshold energy levels of cornea damage by IR radiation pulses with duration shorter than 1 μs is generalized. Mathematical modeling of the radiation energy thresholds is based on the concept of the removal of a sur
Publikováno v:
Ophthalmic Technologies V.
Action on biotissues of power laser pulses about 20 nsec was investigated by using high level mathematical model. The system of equations contains five unknown functions: temperature, pressure, axial and radial convection velocity, density. The 2D so
Publikováno v:
Lasers in Ophthalmology II.
High level mathematical models have been used for optimizing regimes of photocoagulation of choroid new growths with minimal damage of the sensitive retina. Supposed spectral range and temporal irradiation regimes have given good results in experimen
Publikováno v:
SPIE Proceedings.
A mathematical model of interaction between laser radiation and multilayer biological tissue has been developed. At a pulse duration shorter than 1 ms acoustic or shock waves are generated in the tissues simultaneously with a rapid temperature rise.