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  Тип елементу:Документ,

  Comparative assessment of fine motor skills and manual dexterity in adolescent basketball players, other athletes, and inactive peers

  (Національний технічний університет "Харківський політехнічний інститут", 2026) Amato, A.; Arabadzhy, Anna

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  This cross-sectional study examined the influence of specialized athletic training on the development of manual dexterity in a youth population. A total of 78 participants aged 8–15 years were divided into three groups: the Basketball Group (BG; n = 37), the Sports Group (SG; n = 19, engaged in activities such as soccer or martial arts), and the Non-Sports Group (nSG; n = 22). Manual dexterity and upper limb function were assessed using the Grooved Pegboard Test (GPT) for complex manual dexterity, the Coin Rotation Task (CRT) for finger coordination, and the Handgrip Test (HGT) for isometric strength. The study aimed to evaluate differences in motor performance associated with varying levels and types of physical activity, as well as to explore the applicability of the CRT as an assessment tool in this context.

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  Тип елементу:Документ,

  The integrated model of the Italian Basket Federation as a method for the development of young athletes

  (Національний технічний університет "Харківський політехнічний інститут", 2026) Alba, G.; Arabadzhy, Tymur

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  The integrated teaching model of the Italian Basketball Federation (Federazione Italiana Pallacanestro – FIP) is presented and analyzed in all its components as a possible solution to several challenges faced by the new generation of young athletes. An appropriate approach to the athletes’ psychological dimension is examined as a way to address early sport dropout during adolescence as well as the poor management of mistakes and competitive emotions. The methods related to the physical component are discussed as a possible response to the ongoing declining motor skills among children and adolescents, especially following the global COVID-19 pandemic. Finally, the technical methodology aims to increase the percentage of effective training time young athlete experiences during each session.

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  Тип елементу:Документ,

  Identifying the influence of the concentration of surfactants on the technological indicators of aerosol emulsion

  (PC тесhnology сеntеr, 2024) Putyatin, Bogdan; Bliznjuk, Olga; Masalitina, Nataliia; Bezpal'ko, Valentyna; Zhukova, Liubov; Filenko, Olesia; Horiainova, Viktoriia; Ponomarova, Maryna; Ryabev, Anton; Beliuchenko, Dmytro

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  The object of the study is an emulsion system containing emulsifiers (Emulgin B2, Lanett SX), wetting agents (propylene glycol, glyceryl cocoate) and sodium laureth sulfate as a foaming agent. The main problem solved in the study is to ensure rational technological properties of emulsion systems in aerosol form under variable storage and use conditions. The results obtained showed that to ensure maximum emulsion stability during 7 and 30 days of storage, the optimal concentrations of Emulgin B2 are 2.75…3.0 %, and Lanett SX is 2.0…2.5 %. To achieve the desired foaming ability (80…85 %) and foam stability (75…80 %), it is recommended to use sodium laureth sulfate at a concentration of 0.20…0.22 %. It was found that the wetting agents – propylene glycol (7 %) and glyceryl cocoate (1.5 %) – provide optimal system viscosity within 35…40 mPa·s. The stability of the emulsion is ensured by the formation of strong interfacial films using Lanett SX, while Emulgin B2 improves the thermal stability of the system. Foaming properties are provided by the ability of sodium laureth sulfate to reduce interfacial tension, however, too high concentrations can lead to foam oversaturation and deterioration of its stability. The features of the obtained results are that specific concentration limits of the components are justified, at which the necessary stability and functionality of the emulsion system are ensured. This allows solving the problem of achieving optimal characteristics of the emulsion system during storage and use, ensuring comfortable application to the skin and a stable foam structure. The scope of application of the obtained results is the cosmetic industry

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  Тип елементу:Документ,

  Secondary Thermoplastic Modified Wood-Polymer Composite with Increased Technological, Mechanical and Dielectric Properties

  (Lifescience Global Canada Inc., 2024) Kopylov, Serhii; Cherkashina, Аnna; Bliznyuk, Oleksandr; Gorbunov, Kostiantyn; Petrov, Serhii; Filenko, Olesya; Makhonin, Mykola; Tsereniuk, Oleksandr

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  The article describes the development of new formulations of wood-polymer composites with a modified polymer matrix and the study of their technological, mechanical and dielectric properties. The research aim is to create a new composition of wood-polymer composites based on secondary raw materials with an improved set of technological, mechanical and dielectric properties, namely, the modification of the polymer matrix and the development of a new technology for its production. The optimal composition of the polymer matrix and modification influence of the wood polymer composites polymer matrix on the physical, mechanical and dielectric properties of the samples are determined. Strength, impact resistance, abrasion, mechanical and dielectric properties are studied. A description of the climatic influences on the wood-polymer composites including the influence of moisture and temperature is given.

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  Тип елементу:Документ,

  Use of thistle seeds of modified composition in chocolate mass technology

  (PC тесhnology сеntеr, 2023) Stankevych, Serhii; Zabrodina, Inna; Lutsenko, Maryna; Derevianko, Іryna; Zhukova, Liubov; Filenko, Olesia; Ryabev, Anton; Tonkoshkur, Maksym; Zolotukhina, Olena; Ashtaeva, Natalia

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  The object of the study is the analytical values of lipids of milk thistle seeds of a modified composition, namely acid and peroxide values, as well as the induction period of lipids of chocolate mass with the addition of milk thistle seeds. The paper substantiates rational parameters of thistle seed processing for the inactivation of lipases and lipoxygenases. Approximate dependences of the acid and peroxide values of thistle seed lipids on the pH of the wetting solution and the wetting degree of seeds were obtained. This makes it possible to substantiate such rational processing parameters of thistle seeds that inhibit the accumulation of free fatty acids and primary oxidation products in seeds during storage. An increase in the induction period of the oxidation of the lipid component of the chocolate mass with the use of thistle seeds of a modified composition was proven, which is 2.5 times higher than the induction period of the chocolate mass sample with thistle seeds with a native enzyme complex. The research results make it possible to develop a technology of healthy chocolate mass using thistle seeds of a modified composition, the lipid component of such mass is stable to oxidation and hydrolysis. The data obtained in the work are explained by an increase in the ability to inactivate lipolytic and lipoxygenase enzymes of milk thistle at high humidity in an acidic environment under the influence of microwave radiation. The advantage of the obtained results is the possibility of not violating the integrity of thistle seeds during the inactivation of the enzyme complex, which allows extending the shelf life of this raw material. An applied aspect of using the scientific result is the possibility of expanding the range of healthy chocolate masses with the use of thistle seeds

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