摘要:In this paper we will show the possibility of studying physical properties and irreversible phenomena that occur in biological tissues by applying the dielectric Kluitenberg’s non-equilibrium thermodynamic theory. Namely, we shall use some recent extensions of this theory that allows deducing its main characteristic parameters from experimental measurements. We determine frequency spectrum for phenomenological and state coefficients of the non-equilibrium thermodynamic approach. Applying these results to the study of human liver tumor and normal liver we show, for comparison, that it is possible to determine the difference, in some detail, of the amount of single irreversible phenomena occurring inside them.