N.T. Abdullaev - Ph. D. (Eng.), Associate Professor, Department «Biomedical Equipment» , Azerbaijan Technical University (Baku). E-mail: a.namik46@mail.ru K.Sh. Ismailova - Ph. D. (Eng.), Associate Professor, Azerbaijan State Oil Academy (Baku) M.I. Kerimova - Assistant, Azerbaijan State Oil Academy (Baku)