Aleksey Alekseev

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The objective of the study was to determine reasons of poultry deaths in Crimea Republic in December 2005 as well as isolation, identification, and comparative analysis of pathogens, which caused epizootics in Siberia and Crimea. During epizootic in poultry in North-East Crimea highly pathogenic avian influenza virus H5N1 was isolated. Phylogenetic analysis(More)
The study of basic biological properties of H5N1 subtype strain isolated during an outbreak among wild birds in Russia in 2010 was presented. The study was carried out using conventional methods according to the WHO recommendations. H5N1 influenza virus isolated in Siberia belonged to clade 2.3.2 of the hemagglutinin gene; the phylogenetic analysis was(More)
The results of virology inspection of the wild birds living in territory of the Western Mongolia, carried out in 2003-2004 are presented. For the specified period influenza viruses H3 and H4 subtype hemagglutinins are isolated from birds. It is revealed taxonomic and ecological heterogeneity of the birds involved in maintenance of circulation of influenza(More)
Work is devoted to studying of circulation of avian flu influenza A (H5N1) virus at poultry in territory of Novosibirsk region in preepizootic period. 1901 sample from clinically healthy poultry is collected and investigated. On chicken embryos it has been isolated 28 virions, including from poultry of the industrial maintenance--16, from the poultry(More)
It is shown, that the possibility of a freezing of QCD running coupling constant at zero in the approach with " forced analyticity " can not be in accord with Schwinger-Dyson equation for gluon propagator. We propose to add to the analytic expression the well-known infrared singular term 1/q 2 as well as pole term corresponding to " excited gluon ". With(More)
Under assumption of singular behavior of αs(q 2) at q 2 ≃ 0 and of large q 2 behavior, corresponding to the perturbation theory up to four loops, a procedure is considered of matching the β-function at a boundary of perturbative and non-perturbative regions. The contribution of the non-perturbative region to the gluon condensate is calculated with varying(More)
AIM Study of molecular-biological and antigenic features of H5N1 subtype virus strains isolated in southern Siberia in 2005-2009. MATERIALS AND METHODS Study was performed by using standard procedures according to WHO recommendations. RESULTS Hemagglutinin gene of H5N1 subtype virus strain isolated in Siberia belongs to 2 genetical lineages: 2.2 and(More)