S. A. Vasil’ev

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The sex ratio in the first trimester of pregnancy shifts toward males due to increased elimination of female embryos. One reason for this phenomenon may be disruption of X chromosome inactivation. In this paper, we have analyzed the nature of the X chromosome inactivation in extraembryonic tissues of induced and spontaneous abortuses with 46,XX karyotype.(More)
Construction of distributed systems by way of composition of program objects is considered. It is proposed to define topology of links between the objects by describing a “neighborhood” of each object in the form of a list of “formal neighbors.” Synchronization of evolution of the object and its neighbors is described in terms of “local time” of the object(More)
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