F. M. Kirillova

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A canonical optimal control problem for linear systems with timevarying coefficients is considered in the class of discrete controls. On the basis of linear programming methods, two primal and two dual methods of constructing optimal open-loop controls are proposed. A method of synthesis of optimal feedback control is described. Results are illustrated by a(More)
Citrobacter phages 38/37, 31/37, 40/1 and 8/5, isolated from lysogenic cultures, were concentrated and purified by 2 cycles of differential centrifugation. Electron microscopy of the phages has shown that their particles have similar morphology and that they relate to the morphological group A1. The heads of the phages are hexagonal, 50 +/- 2 nm in(More)
The usefulness of some cells cultures (BSC-I, VERO, MDSK) for isolation and study of reproduction of influenza A viruses was explored. Out of 50 clinical specimens examined, in 16 cases the virus was isolated both in chick embryos and in MDSK cell cultures. MDSK cultures were found to be highly sensitive to influenza A viruses, which produced cytopathic(More)
The electron microscopic dynamic study of the interaction of S. flexneri virulent strain 2a and S. flexneri avirulent strain, genetically related to strain 2a and having the same antigenic structure, with peritoneal macrophages of CBA mice at an early period showed differences in the cytotoxic action of these strains. Even at the early period of the(More)
Interrelations between the L-forms of group A beta-hemolytic streptococci and mouse peritoneal macrophages have been studied by electron microscopy. The macrophages have been shown to actively phagocytize L-form cells in great amounts. Most of the phagocytized L-forms are destroyed and become nonviable, but a few of them survive as elementary bodies within(More)