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a computerized control system for applying pressure to liquid and crystallizing metal based on industrial controllers was developed. A dedicated instrumentation system to monitor the key process variables is also developed. Appropriate PLCs to control the process were selected. A sequence that compares the current process variables with the target values and makes adjustments as required was also developed. Obtained results apply to the design of computerized control systems for casting with crystallization under pressure processes.

The paper deals with a compositional analysis of levels in adult education. Local level subsystems which structure includes curricula, syllabus, teaching staff, human resources, facilities, students and their interaction with andragogical personnel (adult educators) have been considered. The analysis introduced in the paper is aimed at revealing key features, which determine models of adult education, peculiarities of English language courses for adult learners. In addition, the authors suggest a classification for English language courses as an effective means for acquiring the highest level in English language learning.

In this work, the study results of an implantable pediatric rotary blood pump (PRBP) are presented. They show the results of the numerical simulation of fluid flow rates in the pump. The determination method of the backflows and stagnation regions is represented. The operating points corresponding to fluid flow rates of 1, 3, and 5 L/min for 75-80 mm Hg pressure head are investigated. The study results have shown that use of the pump in the 1 L/min operating point can potentially lead to the appearance of backflows and stagnation regions. In the case of using pumps in fluid flow rates ranging from 3 to 5 L/min, the number of stagnation regions decreases and the fluid flow rate changes marginally. Using the pump in this flow rate range is considered judicious. The study shows an increase in shear stress with an increase in fluid flow rates, while there is no increase in shear stress above the critical condition of 150 Pa (which does not allow us to reliably speak about the increased risk of blood cell damage). The aim of this work was to design, prototype, and study interaction of the Sputnik PRBP with the cardiovascular system. A three-dimensional model of Sputnik PRBP was designed with the following geometrical specifications: flow unit length of 51.5 mm, flow unit diameter of 10 mm, and spacing between the rotor and housing of 0.1 mm. Computational fluid dynamics studies were used to calculate head pressure-flow rate (H-Q) curves at rotor speeds ranging from 10 000 to 14 000 rpm (R