Ukrainian Engineering Pedagogics Academy
Recent publications
Flour confectionery products have an unstable polyphase structure that needs stabilization. The nutrient composition of these products is characterized by a high content of sugar and saturated fatty acids. The content of protein, dietary fiber, vitamins, and minerals is low. This predetermines the feasibility of using the latest raw materials. This paper has proven the possibility of using flour from extruded sunflower seed kernels (FESSK). FESSK is a unique protein-mineral raw material ingredient that contains essential amino and polyunsaturated fatty acids, as well as biologically active substances. In FESSK, compared to high grade wheat flour (HGWF), the content of protein increases by 3.1–3.3 times; minerals – 13.80–13.82 times; fiber – 98.91–98.93 times; fat – 2.54–2.56 times; the total amount of essential amino acids – by 3.15–3.19 times. One should note the balance of amino acid composition and the usefulness of FESSK proteins (amino acid number (AAN) of essential amino acids approaches 100 %). Compared to HGWF, FESSK has increased biological value index and utilization rate of amino acid composition, by 48.74 % and 39.29 %, respectively. Of the 13 vitamins necessary for the human body, 12 vitamins (92.3 % of the total amount of vitamins) were identified as part of the FESSK composition. In FESSK, compared to HGWF, fat-absorbing capacity increases by 1.50–1.52 times and water retention capacity by 3.62–3.64 times. It was found that the addition of 10.0 % FESSK increases wettability by 6.58–11.19 %; expansion rate by (1,0±0,1) %; ash content – 5.71–13.33 times; fat content by 2,19–6,17 %; protein content by 8.29–21.37 %. The integrated quality indicator increases by 5.1–6.8 %. Alkalinity decreases by 1.04–2.06 %. The expediency of the production of crackers with improved nutritional properties to improve the food supply of servicemen in a special period has been proven.
The studies revealed the regularities of obtaining bioactivated sea buckthorn seeds using plasma-chemically activated aqueous solutions during germination. Sea buckthorn seeds were chosen as the research object. Plasma-chemically activated aqueous solutions were used to activate the germination process. This made it possible to solve the problem of processing waste from the production of sea buckthorn oil, and also contributed to obtaining a high-quality component of food products. Experimental studies have proven the effectiveness of using plasma-chemically activated aqueous solutions as effective intensifiers and disinfectants for the process of bioactivation of sea buckthorn seeds. It is shown that their use intensifies the germination of sea buckthorn seeds, contributes to a more active accumulation of biologically valuable components in the seeds. Plasma-chemically activated aqueous solutions with a peroxide concentration of 300–700 mg/l were used. An increase in the geometric parameters of seeds, namely length by 8.5–14.9 % and width by 3.7–14.8 %, was recorded. The germination energy increased by 5–13 % and germination capacity by 5–14 %. The composition of sea buckthorn seeds, both derived raw material and bioactivated, was investigated. Studies have shown that bioactivated seeds contain an increased amount of highly valuable substances. The protein content increased by 4 % compared to sea buckthorn seeds and by 1.7 % compared to the control. The lipid content increased by 2 and 1.1 %. An increase in the content of vitamins was noted: B1, B2, C, A, E, R. The amount of amino acids increased by 9–13 % compared to the control, and compared to the original raw material – by 1.5–3.5 times. In addition, plasma-chemically activated aqueous solutions effectively disinfected the raw material. The presented technology can be used in the food processing industry
The research is devoted to determining the properties of magnetic textile materials made based on nanocomposite oxides of divalent and trivalent iron. The magnetic properties of textile materials open up significant prospects for their use in smart products. Providing textile materials with new properties requires substantiation of rational conditions for the synthesis of magnetic nanomaterials. To determine the real parameters of magnetic nanoparticles during their synthesis, electron microscopic studies were used, the size dispersion of nanoparticles was determined by analyzing the peak widths of X-ray images, and the spectra of nanoparticles were analyzed to determine their structures. The magnetic properties of nanoparticles were studied for the purpose of the potential of technological processing in electromagnetic fields. The specific forces arising in the textile material under the influence of the magnetic field. Significant rational parameters of the technological process of the synthesis of magnetic nanoparticles from the point of view of their use in magnetic textile smart materials were determined. Graphical abstract
Bakery products have an unstable heterogeneous structure that needs stabilization. The nutrient composition of these products, in most cases, is unbalanced: it is characterized by a high content of calories and carbohydrates. At the same time, the content of protein, fat, dietary fiber (fiber), vitamins, macro- and microelements is low. This leads to the search for raw materials with high functional and technological potential and with an attractive nutrient profile. The expediency of using in the technologies of bakery products a secondary product of processing sunflower seeds – flour from the extruded kernel of sunflower seeds (FESSK) has been proved. Its nutrient profile has been investigated. A high protein content (38.73 %) with a well-balanced amino acid composition (10 essential and 9 non-essential amino acids) increases the biological value of FESSK. The content of fat (4.87 %), rich in unsaturated fatty acids (16 fatty acids), enriches the nutritional profile of FESSK. The high ash content (8.0 %) (22 elements were found) and the presence of 12 vitamins (92.3 % of the total amount of vitamins) indicates a high biological value of FESSK. It was found that the addition of FESSK in the amount of 10.0 % to the mass of wheat flour increases the humidity by 0.5–1.2 %; reduces acidity by 0.5–1.2°; increases porosity by 7.0–11.0 %; increases the specific volume by 1.12–1.26 cm3/g. It reduces crumbliness of the crumb by 2.0–2.2 times, QMAFAnM – by 4.0–4.8 times, and increases the period of preservation of bread freshness by 1.57–1.77 times
One of the tasks of dressings in the process of wound treatment is to remove exudate. In the optimal case, this intensity is determined individually for each wound. Active medical textiles take advantage of the capillary effect that occurs in thin channels. For these purposes, medical materials are created from porous structures. To create back pressure in foamed medical materials, the pores must be in the form of channels, which is not realized with conventional technologies. The use of magnetic nanopowders based on iron oxide as an additive ensures the formation of channels of the required shape in the foamed materials. This effect makes it possible to increase the efficiency of foam structures when used as medical materials.
The study is dedicated to the justification of the need for the wide implementation of digital technologies in logistics activities, taking into account globalization challenges. The purpose of the article is to highlight the basics of implementing digital technologies as a tool ofefficientlogistics in modern conditions. The methodological basis of the study is a systematic approach, which allows studying logistics as a complex set of interdependent and interacting subsystems that have integral properties and develop under the influence of internal and external influencing factors. It has been proven that the use of information technologies in logistics makes it possible to: effectively solve current problems and eliminate possible problems in the future; improve the quality of logistics services; maximally load the capacity of logistics flows; rationalize material flows; increase the safety of transportation; optimize costs for the supply of resources and products; eliminate intermediate links by ensuring the transformation of information into forms that are convenient for consumers; increase the efficiency of information exchange and increase its security; implement new services and innovative customer support tools.
This paper substantiates the need to rationalize the drying process of such a vermitechnology object as Eisenia Fetida worms to utilize them as feed for industrial animal husbandry and poultry farming. This will contribute to improving the energy efficiency of vermitechnology application in the production of agricultural products. A technique of drying with the effect of induced heat and mass transfer has been adapted for raw materials with a low amount of dry substances, which is a homogenate of worms. Two adaptation techniques are proposed: drying the homogenate in a heat and mass exchange module with artificially created obturators; drying a mixture of homogenate with grain bran with the spontaneous formation of obturators from raw materials. Studies of various homogenate drying techniques have established that the longest duration of dehydration is achieved by convective drying technique. This is 1.2 times larger compared to the conductive technique and 2 and 3 times larger than drying with the effect of induced heat and mass transfer depending on the technique of obturator formation. It has been established that the final moisture content of dried products is the smallest for techniques involving the effect of induced heat and mass transfer. It is in 2...3 times less compared to convective and conductive techniques. Drying with the effect of induced heat and mass transfer of mixtures with the following mass ratio of the homogenate to grain bran was investigated: 1:1; 2:1; 3:1. It was established that for a sample with a ratio of 3:1, the nature of the kinetics of drying is different from the typical kinetics for the effect of induced heat and mass transfer. The consequence is an increase in the duration of dehydration compared to samples of 1:1 and 2:1 by 1.3 times. The results can be used in agriculture, namely, industrial animal husbandry, poultry farming, and vermitechnology
Purpose: to determine the peculiarities of training female athletes engaged in Pole Sports on the basis of the factor analysis of physical, special physical qualities and functional capabilities. Material and methods: the study involved 15 female athletes (age 12-13 years), who are engaged in the sports club "Atmosphere" in Pole Sport and aerial acrobatics, Kharkov. Athletes are in the group of initial training (amateur level) and have the experience of sports activity 1-1,5 years. The study was conducted in September 2021. All participants and their parents agreed to participate in the experiment. Methods: theoretical analysis of literary sources; methods of testing physical development (height, weight); physical fitness (Push-ups 30 s, jumping rope for 3 min, lifting the trunk in sitting position in 1 minute, dynamometry of right and left arms, tilt of the body forward from the sitting position); special physical condition (chopper, pulling up on the pole, jumping rope for 3 min, jumping " Heels back", jumps with turning 180°, jumps with turning 360°, jumping into grouping); methods of functional capabilities (Genchi and Ruffier tests), mathematical and statistical methods using "EXCEL" and "SPSS" computer programs (factor analysis by principal component method was used). Results. A factor analysis of physical development indicators, physical training, functional athletes specializing in Pole Sport. It was found that in the structure of preparation of the athletes of this group overcomes the first factor "Special endurance" (15,21% of the total total dispersion), then the second "Functional abilities" (14,54% of the total total dispersion), the third factor "Power capabilities" (14,12% of the total cumulative variance) and the fourth factor " Coordination abilities" (14,02% of the total cumulative variance), the fifth factor " Flexibility " (13,52% of the total cumulative variance), the sixth factor "Technical capabilities" (12.37% of the total cumulative variance). The percentage contribution of these factors indicates the equivalent importance of these factors. Conclusions. The training means for the development of special physical qualities and techniques, the dosage of the volume and intensity of loads for athletes 12-13 years old involved in Pole Sports are presented.
Introduction. In the context of distance learning in the sphere of valeology, the significance of university students’ gaining computer literacy and English skills can hardly be overestimated. Therefore, it is relevant to organize an integrative learning format within valeological education based on parallel forming both digital and linguistic competencies of students in order to increase the efficiency of training. Purpose of the study is to analyze the mutual influence of digital, linguistic and valeological competences in the health-saving environment of higher education of Ukraine. Methods. The system analysis and bibliosemantic methods underlie the research. Results. Inconsistencies in understanding the content of the studied competencies, which affect the methods of their forming and the evaluation of the learning outcomes, have been identified. Values and levels of formation of digital and linguistic competences in the European Union have been determined. The essence of valeological competence and proposals on the assessment of the levels of this competence formation has been disclosed by the group of Kharkiv researchers. The common characteristics of the assessment of the levels of forming the competences under study have been detected. Conclusions. It has been ascertained that digital and linguistic competences are necessary for forming university students’ valeological competence. The research has proved that gaining utmost effectiveness to that end is enabled through the realization of synergetic principles. Keywords: health-saving higher education, valeological competence, digital competence, linguistic competence, university students, distance learning, synergy in joint competences formation.
The object of research: morphological and cultural characteristics of micromycetes: yeast Saccharomyces cerevisiae and mycelial fungi Mucorracemosus grown on agar medium.The subject of research: flax seed suspension, ultrafine powder of double oxide of divalent and trivalent ferrum, micromycetes: yeast Saccharomyces cerevisiae and mycelial fungi MucorracemosusInvestigated problem: ensuring the bacteriostatic properties of raw materials and obtaining products with an extended dates of expiry.The subject in scientific results: the impact of nanoparticles (NP FeO×Fe2O3) on the bacteriostatic (protective) properties of flax seeds against fungal infections has been studied and the dependence of bacteriostatic properties on the amount of nanomagnetite has been determined. The ability of nanomagnetite to improve the bacteriostatic properties of flax seeds has been proven: addition of 0.1 %; 0.15 %; 0.2 % of nanomagnetite suppresses the development of microflora (micromycetes) in flax seed samples by 8–20 times. A reduction in the number of micromycetes (yeast Saccharomycescerevisiae and mycelial fungi Mucorracemosus) by 8–10 times and the size by 10–20 times was established compared to the control. The rational content of nanoparticles (NPs FeO×Fe2O3–nanomagnetite) has been determined as 0.15 % of the weight of the recipe mixture. The proposed mathematical model makes it possible to predict the effectiveness of using NP FeO×Fe2O3 – nanomagnetite to inhibit the growth of mycelial fungi to ensure the bacteriostatic properties of raw materials, in particular, flax seeds. The area of practical use of the research results: food industry enterprises specializing in the production of bakery and flour confectionery products using a mixture of wheat and rye flour with the addition of food additives. Innovative technological product: flour raw material with a mineral nano-additive suspension based on the double oxide of divalent and trivalent ferrum, which allows to ensure quality and extend dates of expiry of the product. Scope of the innovative technological product: to enhance the quality of food supply of the troops in extreme conditions
The paper proposes an approach to the analysis of production technology based on the proximity of the obtained accuracy to the desired parameters. Such an assessment of technology in terms of quality will allow for a reasonable choice of the best technology and assign technological parameters which can be applied in the conditions of Industry 4.0. The approach builds on the control system proposed earlier by the authors based on the use of the desirability function and the postulation that there is the best parameter from a constructive point of view, at which the best quality is achieved. The projection of the dimension distribution density function onto the desirability function gives the desired function called the dimension desirability distribution density function. Analytical equations for constructing this function have been obtained both for the general case and for the cases of linear and parabolic desirability functions. In the work, the dimension desirability distribution density function has been illustrated with a specific example for different values of the shape index of the desirability function and different technological processes from the point of view of quality. It has been shown that, although the desirability function can be constructed for any shape parameters, the shape factor for the dimension desirability distribution density function equal to 1 is the best, and outside the range 0.3–1.2, the desirability distribution density function does not allow analyzing the production technology in terms of suitability.KeywordsTolerancingActual dimensionQuality systemDesirability functionContinuous quality improvementIndustrial innovation
This paper considers the physical processes in the structure of the material for a heat-emitting fuel element (FE) shell, caused by various damaging defects, on its outer and inner surfaces, and affecting the change in the geometric parameters of a nuclear reactor’s FE. The task to improve the model of damage to an FE shell is being solved, taking into consideration structural and phase changes in the material of the shell with damaging defects on the outer and inner surfaces, in order to establish the actual criterion for assessing the FE hermeticity degree. It is proposed to study the structure of the shell material with damaging defects (macropores and microcracks), which is a porous heterogeneous structure with fractal properties of self-similarity and scalability, to use the apparatus of fractal geometry. A physical model of the FE shell has been built and proposed, in the form of a geometric cylinder-shaped figure, which makes it possible to investigate the fractal properties of the structure of the material of the damaged shell and their influence on a change in the geometric parameters of FE An improved model of damage to the FE shell was derived, which makes it possible to take into consideration fractal increases in the geometric parameters of FE, for the established values of the fractal dimensionality. Experimental studies of the FE shell, using the skin effect, confirmed the theoretical results and showed the validity of the choice of practical use of the fractal dimensionality parameter as an effective criterion for assessing the hermeticity degree of an FE shell. It has been experimentally established that the value of the fractal dimensionality of 2.68 corresponds to the maximum degree of damage to the shell for a leaky FE.
Background Over the past decade, the number of individuals requiring medical care for amphetamine-related psychosis has increased. Objective This study aims to examine the psychological characteristics of amphetamine psychosis in drug-addicted patients depending on the length of drug exposure and compared to patients diagnosed with paranoid schizophrenia. Method The study was carried out in psychiatric clinic No. 1 in Kyiv (Ukraine) in 2019, involving 107 patients. Of all the participants, 50 were included in Group 1 (methamphetamine psychosis) and 57 – in Group 2 (paranoid schizophrenia). All patients were treated with medication to relieve exacerbating symptoms. They underwent extensive testing to determine the impairment severity of cognitive function, attention, and task performance during remission. Results In Group 1, the timing of onset for paranoid symptoms depends on the length of amphetamine exposure (Spearman correlation coefficient = 0.89). The efficacy and dynamics of drug treatment in Group 2 were similar to patients in Group 1. However, the effect of reduction in Group 2 was achieved only in 4 months. Delusions, emotional disturbances, hallucinations in patients of Group 1 occurred 2.3 times more frequently than in Group 2 (p ≤ 0.05). The patients of Group 1 are characterized by the presence of disorders related to the affective and behavioral components. Conclusion All reported exacerbations are related to amphetamine use. Patients in Group 1 learned a smaller number of words compared to those in Group 2. Besides, a much larger number of errors and difficulties with shifting focus was recorded.
Formulation of the problem. The article considers the problem of valeological (health saving) competence formation in non-medical students. Health saving competencies are based on a healthy lifestyle, safe behavior practices and the ability to provide emergency pre-hospital care to victims in critical situations. The formation of valeological competence in non-medical takes place during the study of valeological disciplines (including "Fundamentals of Medical Knowledge", "Health Pedagogy" and others) in higher education institutions (HEI). Since the spring of 2019, the teaching of these disciplines is forced to take place in distance form. The purpose of the article. To compare the formation of valeological competence in students of the same educational level who were trained in a standardized valeological program in conditions of classroom and distance learning. Research methods. The study used methods: qualimetric and expert assessments – to form a factor-criterion model of valeological competence, pedagogical experiment and mathematical statistics – to calculate and compare the results of the formation of valeological competence, randomization – to form comparison groups. The main results of the study. It is established that valeological competence and the vast majority of its components (13/14) are better formed during classroom training. Thus, a high level of competence (75–100%) was reached by 14.4% of students who studied in the classroom form (offline), and only 10.1% of students who studied in the distance form (online). Possible reasons for this difference are the need to conduct classroom classes (trainings, role-playing games, emergency training) and higher initial level of knowledge of human anatomy and physiology in students who have undergone classroom training. Conclusions. It is concluded that it is necessary to return to classroom learning after the end of the COVID-19 pandemic in the world and the war in Ukraine for more successful formation of valeological competence in non-medical students.
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137 members
Viktoriia Chobitok
  • Economics and management
Olesia Nechuiviter
  • Department of Information Computer Technologies and Mathematics
Oleksandr Kupriyanov
  • Department of Information Computer Technologies and Mathematics
Illya Isyemini
  • Computer Integrated Technologies in Manufacture and Education
Kharkiv, Ukraine