We perform the Borel resummation of the currently known terms of the ε-expansion up to order ε 4 of the dynamical exponent z in the critical-behavior model A. We obtain the large-order asymptotic approximation of the ε-expansion of the dynamical exponent and find a significant discrepancy between the currently calculated orders of the expansion and the obtained asymptotic values. We discuss the influence of this deviation on the accuracy of the resummation results.

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SiinimsryInvestigations are made about the possibilities of extraction of components included in the biomass of the yeast Succhromyces cerevisiue after cell desintegration in dependence of the pH of the medium. Furthermore is shown the racemization of some amino acids during alcaline treatment of the desintegrated material during the isolation of the protein.Die Biomasse der Mikroorganismen, insbesondere der Hefe, ist unzweifelhaft eine der aussichtsreichsten untraditionellen EiweiBquellen fiir die nienschliche Ernahrung. Es gibt drei Grundauffassungen von der Verwendung der Biomasse der Mikroorganismen die Verwendung von ganzen Zellen ; die partielle Veredlung der Biomase durch Zerstorung der Zellhiillen und Ver-die Gewinnung hochgereinigter Isolate mit mindestens 80% EiweiB.

Polycondensation of haloaromatics and sodium sulfide has been studied. An increase in reactivity of functional groups, a change of the composition of the elementary polymeric unit with a change of the relative amounts of the monomers, and a key role of side‐reactions, i.e. intra(molecular) and macrocyclisation, have been revealed. Low‐melting isomeric poly(phenylene sulfides), as well as their derivatives, reactive telechelic oligomers, have been prepared. New methods of preparation of poly(arene sulfides) by transarylation of diphenyl sulfide, polymerisation of cyclic aromatic sulfides, or by direct polycondensation of arenes with sulfur under the action of AlCl3, as well as by polycondensation of aniline with sulfur in the absence of catalysts have been suggested. Structures and properties of newly prepared polymers have been studied.

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The paper discusses the applicability of satellite images obtained through Earth remote sensing to detecting archaeological objects – burial mounds – that are widely found in the steppe regions of the Samara Region. Requirements for the satellite images that enable the task to be adequately fulfilled are formulated. Methods of computer image processing that provide improved decoding of satellite images (improved object recognition quality) by a human operator are proposed.

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In this paper, we propose an earth remote sensing data processing technology for obtaining vegetation types maps. The technology includes the following steps: obtaining superpixel representation of an image, calculating superpixel features, K-Means clustering of superpixels by a user-defined training sample, and obtaining vegetation types maps. When compared to other solutions, the major difference of the proposed technology is the ability to combine superpixel segmentation and feature calculation into a single process in one pass of an image that reduces the computational complexity. Another difference lies in the way of forming a sample dataset using superpixel representation of an image. The advantages of the proposed technology are the use of a smaller training dataset and a higher classification quality in comparison with the elemental classification.