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.

No abstract

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.

No abstract