Growth modes and strain relaxation mechanisms of nitrides in molecular beam epitaxy, from 2D to 3D growth mode; Implementation of mathematical and computer modelling to investigate the characteristics of isothermal ammonia fluidized bed catalytic reactors; INFLUENCE OF KINETIC FACTORS ON THE DISTINCTIVE FEATURES OF THE RHEOLOGICAL BEHAVIOR OF OLIGOMER SYSTEMS; MatCalc - a simulation tool for multicomponent thermodynamics, diffusion and phase transformations;Mathematical modeling of transport phenomena in solidification of Fe-C alloy