Analysis of the interaction of seeds with a centrifugal disk working body of a chamber-type treater.

Presowing seed treatment is the first step in growing crops and obtaining a predicted high-quality yield. It plays a vital role in an integrated plant protection system. When treating seeds before sowing, it is crucial to avoid seed damage by the machine working bodies to obtain the planned harvest.

[Comparative morphological study of thyroid gland in mammalian animals and man].

The objective of this study was to examine the morphological peculiarities of the thyroid gland in animals of different mammalian orders and in man at both macroscopic and microscopic level. 304 specimens of the thyroid gland obtained from the animals of 13 species and 5 mammalian orders and man, were studied. At the macroscopic level, the changes of lobar shape, presence and structural peculiarities of the isthmus, and its relative size were analyzed.

[Method of the reconstruction of the lumen shape in the hollow and tubular anatomical structures].

This article describes a new method of the reconstruction of the lumen of hollow and tubular anatomical structures based on the application of polyurethane foam used in construction assembly. Preparations obtained by this method, are characterized by lightness, convenience of assembly and transportation. The making of such preparation does not require a lot of time.

[Age-related characteristics of the stromal-parenchymal relations of the human thymus].

In 155 thymuses and in 57 capsules of the organ, distributed according to 12 age groups, beginning from fetuses of 5 months up to 90 years, age transformations of stromal-parenchymatous relations of the human thymus have been studied and quantitatively estimated. During the postnatal ontogenesis the thymic capsule and its intraorganic connective, tissue frame together with the parenchyma undergo certain phase reorganizations, specific for each age period. The greatest development of the thymic connective tissue frame reaches at the age of 1-3 years and during sex maturation period.