[Hydrodynamic criteria in the choice of surgical tactics in implanting pulmonary artery trunk prosthesis]. / Gidrodinamicheskie kriterii vybora khirurgicheskoi taktiki pri implantatsii proteza stvola legochnoi arterii.

The paper is concerned with the present-day problem of modern medicine, namely with surgical correction of the diseases of the initial part of the pulmonary circulation. The authors suggest hemohydrodynamic simulation of the right heart complicated by extracardial conduit. The simulation was performed at the high theoretical, practical and methodological level to obtain highly significant information which is likely to have paramount importance for clinical practice.

[Flow structure in artificial heart ventricle]. / Issledovanie struktury potoka v iskusstvennom zheludochke serdtsa.

The flow structure in the artificial heart ventricle has been investigated by laser knife visualization method using fluorescence. It is shown that the flow structure is essentially three-dimensional. The effect of inlet artificial valve orientation on the flow structure is demonstrated. The artificial ventricle elastic cover deformation process is reviewed.

[Evolutionary features of dermatophytes]. / Svoistva dermatofitov v évoliutsionnom aspekte.

The authors analyze the findings of physiologic and morphologic studies of dermatophytes and other fungi and the evolution of their characteristics. The studies have shown that the proteolytic activity of the fungi in nutrient medium, as well as azocasein, leucinamide, and leucine beta-naphthylamide assimilation depend on the position of these fungi at the stage of their transition to parasitism. The findings evidence a stringent correlation between the amino acid nitrogen assimilation by the fungi, free amino acid composition in the mycelium, mineral salt assimilation, glucose utilization, and introduction of amino acid nitrogen into the mycelium. The significance of the medium pH for the growth of the fungi has been under study in order to reveal the localization of the fungi in humans and animals. Morphologic changes of the fungi during their evolution have been examined. A genotypical and phenotypical heterogeneity of dermatophyte populations has been revealed.