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Biomedical subjects

I I Turkovskiĭ

Publications and source records attributed to I I Turkovskiĭ.

10 recordsLinked to original sources
PubMedDate not supplied

[Extremely high frequency dielectrometry of biological fluids under conditions of disturbed water balance].

The electrical properties of fractions of blood, B-bile, and aqueous ethanol solutions were studied by UHF dielectrometry. A relationship between the electric permittivity of these biological liquids at a frequency of 62 GHz and their functional value was established. The changes in the electrical characteristics of the solutions in some disturbed functional states were explained by the rebuilding of water quasicrystaalline structure.

Bile↗
PubMedDate not supplied

[Study of photochemical and surface-active melanins of some representatives of black fungi].

The absorption spectra of melanins isolated from some black ascomycetes, as well as of synthetic melanin and natural melanin from Sepia officinalis, were recorded in the long-wavelength ultraviolet region A (320 nm < lambda < 400 nm) and in the blue-violet region of the electromagnetic spectrum at illumination intensities varying from 0.02 to 1 mW/cm2. The photochemical properties of fungal melanins were found to be dependent on both the producing strain and the conditions of its cultivation. The fungal melanins are more susceptible to photomodification and more biologically active than the synthetic melanin, indicating that these properties may be related. The data obtained suggest that the fungal melanins susceptible to photomodification possess higher biological activity than commercial melanins.

Ascomycota↗
PubMedDate not supplied

[Study of water exchange in skin tissues by microwave dielectrometry].

The complex dielectric permitivity of human skin was measured at a frequency of 42 GHz, and a method for calculating water content in skin tissues in vivo was proposed. The water content reaction of skin to standard physical exercises and nontoxic doses of nicotine was investigated. The functionally related changes in skin dielectric properties were interpreted as structural rearrangements of water contained in blood and tissues fluids.

Adult↗
PubMedDate not supplied

[UHF-dielectrometry in the assessment of the structural organization of salt solutions and interstitial fluids in normal and cicatricial tissues].

The complex dielectric permittivity of salt solutions with positive and negative salvation as well as healthy and cicatricially changed human skin in situ at the frequencies of 42 and 56.6 GHz was measured. The relation between the dielectric characteristics of water and diluted salt solutions and changes in their structural organization conditioned by different temperatures of samples and the type of salvation of electrolytes was studied. The differences in the dielectric characteristics of healthy and cicatricially changed skin are interpreted in terms of the dependence of the structural organization of interstitial fluids on the morphological and functional state of biological tissues.

Cicatrix↗