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1. A study was made, using three independent methods, of the mean normal contact stresses set up in rolling. The results of measurements are evaluated. 2. The variation of the mean normal contact stress is examined as a function of the shape of the region of deformation and the coefficient of densification. It is shown that, with increase in the coefficient of densification and the ratiolr/hm, the mean normal contact stress grows.

1. The more remote the process of hydrogen reduction of tungsten and molybdenum from equilibrium and the more unstable the intermediate phases, the greater is the self-acceleration of the reduction process resulting from particle comminution. 2. The hypothesis is advanced thatβ-W is a granulometric rather than a temperature modification of tungsten, which means that the existence ofβ-W directly depends on the particle size of the material.

Three protein fractions (albumins, globulins and glutelins) of cotyledons of ripe and dormant soybean seeds were analysed by a modified polyacrylamide disc electrophoresis method. All fractions were shown to be multicomponent and easily characterized by their “protein electrophoresis spectra”. A method of characterizing proteins by their relative electrophoretic mobility (R.E.M.) by comparison with a new nontoxic dye as a tracer is employed for a preliminary identification of proteins. Specificity of protein complement was investigated in view of the autors, further studies on dynamics of specific proteins in the course of ripening and germination of soybean seeds.