[en] A matrix of kinetic coefficients that describe the processes of particle and heat transfer in a double membrane is obtained. The kinetic coefficients are considered as functions of the membrane parameters. Conditions are found under which the energy expended on transfer of one atom through the membrane is minimum. The obtained theoretical value of this energy is compared with the corresponding value for active transport of ions in biomembranes

[en] In this article, we consider a system of autonomous inductively coupled Van der Pol generators. For two coupled generators, we establish the presence of metastable chaos, a strange non-chaotic attractor, and several stable limiting cycles. Areas of parametric dependence of different modes of synchronization are obtained

[en] Model of transition from liquid evaporation flow to drop one through a capillary within the gravity field taking account of drop mutual effect was framed. S-shaped dependence of flow on capillary pressure drop that on case of critical values of the control parameter was transformed in monotone curve was derived. The values of pressure drop wherein the flow drop mode and drop-free mode became unstable were determined. It was shown that within a certain range of pressure drop evaporation modes might transform in drop ones and vice versa

[en] The heat exchange model for a viscous liquid flowing under the pressure drop effect in a tube, surrounded by the medium with a lower temperature, is considered. It is shown that the system bistable behavior is possible by availability of the liquid viscosity exponential dependence on the temperature and by negligible dissipative heat release. The transitions between cold and hot flows in this case should proceed by a jump. The liquid and channel parameters, whereby the bistability may be observed, are determined