The Study of Hydrodynamic Processes at the Gas Flow Filtration Through the Candied Fruits Layer

The experimental studies of hydrodynamics of the gas flow filtration through the candied fruits layer, formed by the different methods, were carried out. The particles of studied candied fruits were cylindrical, equally sized, filled the whole container for drying. The main characteristics of the layers were experimentally determined: porosity, equivalent diameter, specific surface. The results of experiments prove the expedience of the candied fruits layer formation of the cylindrical particles with correct form by the method of placing candied fruits vertically “with overlap of channels”. Such method allows provide the insignificant hydraulic resistance of the layer and rather high speed of the gas flow filtration through this layer. It will result in the increase of heat transfer and mass output coefficients, so to the intensification of filtration drying. Such formation method also allows reduce the volume of drying equipment, shorten the time of drying and decrease the energy consumption of process

PEDAGOGICAL CONDITIONS OF FORMATION OF READINESS OF FUTURE SPECIALISTS OF PHYSICAL CULTURE TO USE OF INNOVATIVE TYPES OF MOTOR ACTIVITY IN PROFESSIONAL ACTIVITY

We have identified the pedagogical conditions for training future specialists of physical culture and sports to use innovative types of motor activity in professional activities in three dimensions: 1) as factors of formal education – the introduction into the educational process of educational and methodological support for the training of future specialists of physical culture and sports to use innovative types of motor activity in professional activities; 2) as factors of non-formal education: initiation of sections on innovative types of physical activity in a higher education institution for students of non-physical education specialties; organization of competitive activities on innovative types of physical activity in higher education; 3) as factors of informal education – the use of digital visualization technologies in the process of forming the readiness of future specialists of physical culture and sports to use innovative types of motor activity in professional activities.Keywords: professional training; future specialists of physical culture and sports; pedagogical conditions; innovative types of motor activity

POSSIBILITIES OF INFORMATION TECHNOLOGIES IN TRAINING OF SPECIALISTS OF PHYSICAL CULTURE AND SPORT FOR THE USE OF INNOVATIVE TYPES OF MOTOR ACTIVITY

Today, the modernization of professional training of specialists in physical culture and sports in higher education institutions in the direction of mastering by students a set of innovative knowledge, skills and abilities in the field of physical culture and sports is becoming important. This involves the organization of training as an active process of acquiring knowledge. Only with a sufficient level of technological training, information competence, digital literacy, a young specialist in physical culture and sports is able to act adequately in the world, navigate in problematic situations, find rational ways to solve professional problems and be competitive in the labor market. Key words: professional training, future specialists of physical culture and sports, information technologies, lecture-visualization, innovative activity

THE STUDY OF HYDRODYNAMIC PROCESSES AT THE GAS FLOW FILTRATION THROUGH THE CANDIED FRUITS LAYER

The experimental studies of hydrodynamics of the gas flow filtration through the candied fruits layer, formed by the different methods, were carried out. The particles of studied candied fruits were cylindrical, equally sized, filled the whole container for drying. The main characteristics of the layers were experimentally determined: porosity, equivalent diameter, specific surface. The results of experiments prove the expedience of the candied fruits layer formation of the cylindrical particles with correct form by the method of placing candied fruits vertically “with overlap of channels”. Such method allows provide the insignificant hydraulic resistance of the layer and rather high speed of the gas flow filtration through this layer. It will result in the increase of heat transfer and mass output coefficients, so to the intensification of filtration drying. Such formation method also allows reduce the volume of drying equipment, shorten the time of drying and decrease the energy consumption of process.&nbsp

STUDY OF THE KINETICS OF DRYING IRON (II) SULFATE HEPTAHYDRATE BY FILTRATION METHOD

The object of research: kinetics of filtration drying process of iron (II) sulfate heptahydrate. Solved problem: to obtain the calculated dependence of the kinetics of filtration drying, which predicts the nature of the change in the moisture content of the material in time during the period of complete saturation of the thermal agent with moisture in the range of heights of the material layer 30.10-3–120.10-3 m and the speeds of the thermal agent 0.46–1.61 m/s. Main scientific results: The kinetics of filtration drying of iron (II) sulfate heptahydrate was investigated at different heights of the material layer and pressure drops over dry material, which means at different speeds of movement of the thermal agent. A certain critical moisture content, which is Wcr=0.065 kg H2O/kg dry mat and the time it reaches at different heights of the material layer and the speeds of movement of the thermal agent. Based on the solution of the system of differential equations of material balance in the layer and the kinetics of drying, the kinetic coefficients for iron (II) sulfate heptahydrate a=15.75 1/m, α=3.03.10-3 1/s were determined, which made it possible to obtain the calculated dependence of the kinetics drying, which predicts the nature of the change in the moisture content of the material over time during the period of complete saturation of the thermal agent with moisture in the range of heights of the material layer H=30.10-3–120.10-3 m and the velocities of the thermal agent υ=0.46–1.61 m/s. The area of practical application of the results: enterprises for the production of titanium (IV) oxide with the production of iron (II) sulfate heptahydrate as a by-product and enterprises specializing in the manufacture of pigments based on iron (II) sulfate heptahydrate. Innovative technological product: iron (II) sulfate tetrahydrate (FeSO4•4H2O, rosenite), obtained as a result of drying by the filtration method. Scope of application of the innovative technological product: in the production technology of iron oxide pigments

Method of individual forecasting of sow reproductive performance on the basis of a non-linear canonical model of a random sequence

Improvement of sow reproductive performance is a key factor determining the efficiency of the pig production cycle and profitability of pork production. This article presents the solution of an important scientific and practical problem of individual forecasting of sow reproduction . The population used for the present study is from a pig farm managed by the Limited Liability Company (LLC) ‘Tavriys’kisvyni’ located in Skadovsky district (Kherson region, Ukraine). The experimental materials used for this study consisted of 100 inds. of productive parent sows of the Large White breed.The litter size traits – the total number of piglets born (TNB), number of piglets born alive (NBA) and number of weaned piglets (NW) – were monitored in the first eight parities over an eleven year period (2007–2017). The method of the forecasting of sow litter size is developed based on the non-linear canonical model of the random sequence of a litter size change. The proposed method allows us to take maximum account of stochastic peculiarities of sow reproductive performance and does not impose any restrictions on the random sequence of a litter size change (linearity, stationarity, Markov property, monotony, etc.). The block diagram of the algorithm presented in this work reflects the peculiarities of calculation of the parameters of a predictive model. The expression for the calculation of an extrapolation error allows us to estimate the necessary volume of a priori and a posteriori information for achieving the required quality of solving the forecasting problem. The results of the numerical experiment confirmed the high accuracy of the proposed method of forecasting of sow reproduction. The method offered by us almost doubles the accuracy of forecasting of sow litter size compared to the use of the Wiener and Kalman methods. Thus, average forecast error decreases across the range of features TNB (1.71), NBA (1.68) and NW (1.25 piglets). Apparently, this may reflect a higher level of manifestation of the genetically determined level of individual sow fertility at the moment of piglet weaning. The higher adequacy of the developed mathematical model with regard to NW can be also due to the fact that the relations between sow litter size in different farrowings primarily have a non-linear character, which is taken into maximum account in our offered model. Given non-linearity, on the other hand, turns out to be a significant factor determining a lower estimation of the repeatability value for NW compared to the estimations for TNB and NBA. The use of the developed method will help to improve the efficiency of pig farming

Influence of recombinant erythropoietin on mesenchymal stem cells proliferation and differentiation during cultivation on allogenic bone matrix

Effectiveness of mesenchymal stem cells (MSCs) proliferation and differentiation was studied after addition of medicinal product containing human recombinant erythropoietin (rhEPO) into enriched culture medium with components for osteo- and angiogenesis. Cultivation of mesenchymal stem cells under static conditions using “cocktail” of growth factors and rhEPO allowed to populate allogenic discs-scaffolds with connective tissue formations with the participation of osteoblasts and elongated multicellular structures, which formed after endothelium-like cells fusio

THE KINETICS OF THE SHREDDED MISCANTHUS FILTRATION DRYING

Наведено результати експериментальних досліджень кінетики і динаміки фільтраційного сушіння подрібненого міскантуса та отримано криві, що описують зміну вологості матеріалу в часі залежно від властивостей висушуваного матеріалу (за зміни температури сушильного агента (40, 60, 80 °C), зміни висоти шару (40, 80, 100, 120, 140 мм) та зміни швидкості фільтрації сушильного агента (0,6, 1,14, 1,6, 2,05 м/с)). Результати досліджень на основі теоретичних та експериментальних даних спрямовано на покращення процесу сушіння подрібненого міскантуса у стаціонарному шарі.Представлены результаты экспериментальных исследований кинетики и динамики фильтрационной сушки измельченного мискантуса и получены кривые, описывающие изменение влажности материала со временем в зависимости от свойств высушиваемого материала (при изменении температуры сушильного агента (40, 60, 80 °C), изменении высоты слоя (40, 80, 100, 120, 140 мм), и изменения скорости фильтрации сушильного агента (0,6, 1,14, 1,6, 2,05 м/с)). Результаты исследований на основе теоретических и экспериментальных данных направлены на улучшение процесса сушки измельченного мискантуса в стационарном слое.The article presents the experimental studies results of the kinetics and dynamics of the shredded Miscanthus filtration drying and the derived curves that describe the humidity change over the time according to the drying material properties (when the drying agent temperature changes (40, 60, 80 °C), the layer height changes (40, 80, 100, 120, 140 mm), and the filtration rate of the drying agent changes (0.6, 1.14, 1.6, 2.05 mps)). The authors' research results are focused on the process of improvement of the shredded Miscanthus drying in a stationary layer