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Book of Abstracts: Albany 2009

category image Albany 2009
Conversation 16
June 16-20 2009
© Adenine Press (2008)

Influence of Coherent Nonthermal Electromagnetic Radiation on Water and DNA Solution Densities

Millimetric electromagnetic waves (MEMW) of nonthermal intensities are successfully used in clinical medicine and in biology in spite of the fact that mechanisms of their influence on biological objects are yet not quite understood.

The purpose of the given work was to investigate water and DNA water solution densities irradiated by MEMW of 64.5 GHz and 50.3 GHz frequencies, which coincide with the resonant frequencies of oscillations of molecular fractions of water structures, and with frequency of 48.3 GHz not being a resonant one.

For the irradiation of samples generators Γ4-142 and Γ4-141 (Russia) were used. The irradiation of the samples was conducted at room temperatures in the mode of amplitude modulation with frequency 1Hz, the flux intensity on sample being approximately 50mcW/cm2. The sample density was determined by the densitometer DMA 4500 Anton Paar (Austria).

The studies revealed that at irradiation of pure water with the specified frequencies, the density of the twice distillated water practically didn?t change while densities of the buffer and DNA solution increased at irradiation with frequencies of 64.5 GHz and 50.3 GHz coinciding with the resonant frequencies of oscillations of the hexagonal and triad structures of water and didn?t change at irradiation with the frequency of 48.3 GHz. The increase in the DNA and buffer densities (on about 10-4gr/cm3) in consequence of the irradiation of solutions with MEMW most likely was caused by the change of the water structure in consequence of the irradiation since resonant frequencies of the DNA absorption are found in the range of 2 to 9 GHz.

Investigated was also the temperature dependence of DNA solution density at irradiation with frequencies of 64,5 and 50,3 GHz of 90 minutes duration. It was observed that at increase in temperature, the densities of irradiated and not irradiated DNA were decreasing, however there was an essential difference between the courses of the temperature dependencies of solution densities for irradiated and not irradiated DNA.

Having the values of density of the not irradiated and irradiated (64,5 and 50,3 GHz) solutions (of the twice distillated water, buffer and water-saline solution of DNA) in the temperature range of 20÷85ºC, the coefficient of the thermal expansion α can be calculated with formula

Calculations showed that in the interval of 20 ÷ 50ºC, solution irradiation with resonant frequencies of oscillations didn?t affect the value of α. At temperatures 50ºC and above, the coefficient α was less for the irradiated samples as compared to the not irradiated ones. Thus, the data we obtained allow expecting that MEMW coinciding with frequencies of the resonant oscillations of water structures give a certain effect under "in vitro" conditions and can have influence on biosystems through the water component of the medium.

Yu S. Babayan
V.P. Kalantaryan
A. A. Tadevosyan
G. L. Kanaryan
G. R. Ulikhanyan
S. V. Harutyunyan

Dept of Medical and Biological Physics
Yerevan State Medical Univ.
2. Koryun St, Yerevan
0025 Armenia

ysbaba@ysmu.am
gretau7@mail.ru