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This article continues the theme of repatriation represented in the last year's issue (2) of "The Humanities in Siberia" and throws light upon one of the stages of intergovernmental migration between the USSR and China. The work is based on the material of funds of the Council of Ministers of the USSR, Ministry of Foreign Affairs and the Department of Repatriation. The author examines the activities of the special Department deputed by the Soviet Government to solve the problem of repatriation of the Soviet population from countries of Europe and Asia, according to the Treaty concluded after the end of the World War II. The number of the Soviet people transferred from China and their placing on the territory of Ural, Siberia and the Far East are determined.

The structures of hundred halogenated metabolites of phenolic nature generated by lichens and fungi are considered. The groups of depsides, depsidones, fungoid metabolites are marked out. The problems related to biological activity are discussed.

Mononuclear halogenated simple phenol compounds and their derivatives formed from mono- and polyhydroxybenzenes are represented in nature by metabolites of insects, fungi, plants and microorganisms living on land and in water. The structures of a hundred compounds of phenol, quinones and cyclitol types, their metabolism and data on their biological activity are considered in the review.

The problem concerning the extraction of the characteristics of methane formation and transport processes from the experimental data is discussed.

Investigation of endemic features of urolithiasis taking into account local factors, both natural and technology-related ones, allows one to obtain additional information about one of the reasons of this disease. Mineral composition and distribution of urinary calculi in patients from Novosibirsk and Omsk Regions are investigated. A common feature of urolithiasis in the regions under comparison is noticeable predominance of oxalate urinary calculi. However, at the conservation of the general trend of distribution with respect to the prevailing component, patients from Novosibirsk Region exhibit an increase in phosphate and decrease in urate urolithiasis. Noticeable differences in paragenesis of minerals comprising multicomponent urinary calculi and in the composition of single-component concretions are observed. In the Novosibirsk samples, single-mineral concretions are more frequently composed of whwellite, while in the Omsk samples it is anhydrous uric acid. Comparative analysis of the mineral composition and distribution of urinary calculi in other regions according to literature data was carried out.

The effect of mechanical activation of amorphous zirconium hydroxide in centrifugal planetary mill on the formation of crystalline zirconia in the presence of Fe³⁺ and Y³⁺ cation additives is investigated. It is established that the pulsed mechanical impact stimulates dehydration and crystallization of the nanosized metastable form of tetragonal zirconia in a mechanochemical apparatus at the room temperature. The solid-phase mechanochemical synthesis proceeds with a high rate through sequential and parallel routes with the intermediate formation of stable monoclinic modification of ZrO₂. Introduction of additives favours the formation of the tetragonal form; in the presence of small amount of Y³⁺ cations, the process is completed within 2_5 min. The formation of metastable phase in the mechanochemical apparatus can occur due to the pulsed mode of powerful mechanical impact, resulting in the creation of thermodynamically and kinetically favourable conditions, and also due to small crystallite size (12_16 nm) as a result of efficient grinding.

Analysis of the distribution of elements in biogeocenoses based on organomineral composts is performed. Introduction of composts of the wastes from plant and cardboard industry, heat-and-power engineering, cattle breeding did not cause accumulation of microelements in soils in concentrations exceeding the phytotoxicity level and maximum permissible values. Differences in microelemental composition of the experimental and reference plants were insignificant. Compost made of the wastes from industry can be used for reclamation of land disturbed by man's impact.

The effect of particle size of carbonate minerals (dolomite and calcite) on the kinetics of their interaction with water and ferrous sulphate solution is investigated. It is established that the efficiency of solution neutralization is to a noticeable extent determined by the particle size of the reagent. The application of calcite as a material for the construction of artificial geochemical barriers is preferential over dolomite. In the case when reagent consumption is much higher than the stoichiometric amount, or under lengthy interaction (for example, in filtering dams of artificial geochemical barriers) the particle size of the material has no substantial effect.

The aging of freshly precipitated and immediately saturated with a sorbate (Cu(II), Ni(II), Cr(III), Pb(II) and Cd(II) cations) oxyhydroxides of Fe(III), Cr(III), Al(III), Zr(III) and Ti(IV) in 0.25 M solution of NaCl at room temperature is studied. It is established that the aging is accompanied by spontaneous acidification of the oxyhydroxide suspension and by partial desorption of the sorbate, which is to the highest extent exhibited with aluminium oxyhydroxide with Cd sorbed, and by the lowest extent with