Impact of the water treated with silevit on the indices of peripheral blood of irradiated animals

We have investigated the impact of the water treated with silevit on oxidative homeostasis and the composition of peripheral blood of mice irradiated at a dose of 1.0 Gy. It has been found that the course consumption by animals of water modified with silevit results in a decrease of the intensity of free-radical processes in peripheral blood and the change of its cellular composition.     

Computer simulation of stiff-chain polymers

A review of studies on the computer simulation of the phase behavior of various stiff-chain polymer systems is presented. Methods for calculating phase diagrams of a polymer solution in a computer experiment are discussed, including the methods of extended ensembles, entropic simulation, and the Wang-Landau algorithm to obtain the density-of-states function. The authors’ original results on studying the intramolecular orientational and spatial ordering of monomer units in a single stiff-chain macromolecule in the bulk and near a planar adsorbing surface by means of the Wang-Landau algorithm and using the bond-fluctuation lattice model are presented. Corresponding state diagrams are presented for these two cases. For systems of multiple chains, the phenomenon of nematic liquid-crystalline ordering in semi-dilute solutions in the bulk and in a planar layer is considered, and the phase diagrams for these cases are presented. A survey of the published data on some other promising directions of investigation of stiff-chain polymer systems is presented.     

Multicriteria combinatorial optimization problems on a set of polypermutations

The studies on multicriteria combinatorial optimization are continued. A possible approach to solving multicriterion problems is developed and substantiated. An algorithm is developed and implemented. Some peculiarities of efficient solutions to multicriterion problems are described. __________ Translated from Kibernetika i Sistemnyi Analiz, No. 2, pp. 152–160, March–April 2008.     

Influence of Chemical Composition and Microstructure Parameters of Tubing Steels on their Corrosion Resistance

Metallurgist - Comprehensive studies of tubing made of 36CrMn2Si and 38CrMn steels have shown that 38CrMn steel has better corrosion resistance compared to 36CrMn2Si steel. А reduction in...     

Optimizing the technology for making automobile sheet 08Yu based on the physicochemical principles of ladle metallurgy

The main method of eliminating the possibility of having the steel contaminated by nonmetallic inclusions is optimizing the parameters of the ladle treatment on the basis of reliable physicochemical representations of the processes of refining, alloy, and finishing of the steel, the interactions of the metal and slag phases, and other aspects of ladle metallurgy. This article examines the main steps being taken in this direction at the Cherepovets Metallurgical Combine Severstal’ in the production of high-quality automobile sheet 08Yu. __________ Translated from Metallurg, No. 8, pp. 58–65, August, 2007.