Nikolov N. Physiotherapeutic devices based on stochastic spatially non-uniform low frequency electromagnetic field

This thesis deals with the design and development physiotherapeutic equipment. The external factor admission to the irradiation surface must be non-uniform in space and time. This work presents the developed mathematical model of the effect of flow-intensity electromagnetic field onto the aqueous constituent of biological systems. The mechanisms of water radicals’ formation and the effect of impurities on efficiency are shown. The design principles of physiotherapeutic devices for stochastic spatially non-uniform effect were discussed. To ensure stochastic properties of the signal, the stochastic generator based on semiconductor non-linear element with S-type current-voltage characteristic was examined. The thesis also shows the estimation methods for biologically active systems irradiation dose and time efficacy, based on substances separation standard methods.