ID Number		1369
Study Type		Engineering & Physics
Model		Theoretical modeling of RF interactions (with low frequency modulations) in biological samples and experimental studies of linear and non-linear thermodynamic events in media in Petri dishes.
Details		Theoretical studies of RF interaction with biological tissues. Analysis of the potential for nonlinear responses in biological samples of RF with low frequency modulations. The authors conclude that although in principle microwaves can alter the stability of a thermodynamic system by pumping a chemical transition, the degree of nonlinear coupling required for an observable instability is so great that its probability is effectively zero, unless field intensity is extremely high. A sensitive method and related instrumentation for detection of the spectrum scattered by living cells during exposure to amplitude modulated RF energy is also described. AUTHORS' ABSTRACT: Paffi et al. 2015 (IEEE #6092): We conducted an electromagnetic-thermal analysis of Petri dishes filled with different medium volumes under different radio frequency exposure conditions with the aim of identifying linear and non-linear parameters that might explain contradictory results of many in vitro bioelectromagnetic experiments. We found that power loss density and temperature depend on shape, size, and orientation of the exposed sample with respect to direction of incident energy, showing that the liquid medium acts as a receiving antenna. In addition, we investigated the possibility of convection from thermodynamic principles within the liquid medium. For a 35 mm diameter Petri dish, a 2 or 4 ml medium volume is too small to support vertical convection. Conversely, horizontal convective motion is possible for H-polarization exposures at 1.8 GHz.
Findings		No Effects
Status		Completed With Publication
Principal Investigator		University of Maryland, USA - qbfree01@aol.com
Funding Agency		Motorola, Private/Instit.
Country		UNITED STATES
References		Balzano, Q et al. Bioelectromagnetics, (2003) 24:473-482 Balzano, Q Bioelectromagnetics, (2003) 24:483-488 Kowalczuk, C et al. Bioelectromagnetics, (2010) 31:556-565 Paffi, A et al. Bioelectromagnetics., (2015) 36:527-537
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