bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of technological principles of technical control of bus bodies during operation based on passive safety conditions
Authors: Ruban Dmytro , Kraynyk Lubomyr , Ruban Hanna , Hrubel Mykhailo , Duzhyi Roman , Babaryha Andrii 
Published: January 2023

The object of this study is the permissible limits of aging of bus bodies during operation and the formation of appropriate recommendations to control them based on the conditions of compliance of the body with passive safety rules.
According to the current method, the new model of the bus is checked for compliance with passive safety by a destructive method. However, during operation, the physical and mechanical properties of the body deteriorate until the moment of non-compliance with the requirements of passive safety. Therefore, the principles of technical control of bus bodies under the conditions of passive safety by non-destructive methods, the implementation of which became possible during the operation of buses, have been developed. 3 implementation options have been proposed.
In the first variant, visual control is complemented by a measuring tool – an ultrasonic thickness gauge for measuring the thickness of the frame pipes. This method has not previously been used in the certification of vehicles.
The second option involves checking the mechanical properties during repairs on a breaking machine. It is proved that during the restoration repairs of buses, the endurance limit of the steel elements of the body frame is reduced by 1.14–3.33 times.
In the third variant, the methodology for modeling and calculating the stressed-strained state of the body was improved based on the method of finite elements, taking into account the effects of corrosion and fatigue strength of the metal of the frame. When modeling, the deformation of the body racks exceeded the permissible values by 1.5–2.0 times. This non-destructive method makes it possible to check the bus for compliance with passive safety requirements during operation, which was previously impossible.
The scope of practical application is the introduction of research results into the real practice of operating buses at the legislative level.
The results are suitable for monitoring the technical condition of buses by non-destructive methods during operation
Identifying parameters for wood protection against water absorption
Authors: Tsapko Yuriy , Likhnyovskyi Ruslan , Horbachova Oleksandra , Mazurchuk Serhii , Tsapko Аleksii , Sokolenko Kostiantyn , Matviichuk Andrii , Sukhanevych Maryna 
Published: January 2023

An issue related to using wood and timber for building structures is to ensure the stability and durability during operation within wide limits. Therefore, the object of research was the inhibition of the process of water absorption of pine and hornbeam wood during a thermal change in its structure. It is proved that in the process of thermal modification of wood, its structure changes, and, accordingly, water absorption. Namely, the maximum increase in mass under the action of water on an untreated sample of wood was more than 40 %, after thermal modification – less than 35 %. The increase in the mass of wood samples thermally modified and treated with a hydrophobic agent was less than 25 %. On the basis of the obtained results of physicochemical studies, discrepancies were found in the IR spectra of wood, both during thermal modification and with additional treatment with a hydrophobic agent, indicating structural changes in the components. In particular, the decrease or absence of the intensities of the absorption bands of some functional groups and the appearance or intensification of others. On the original hornbeam and pine thermogram, thermally modified, and thermally modified with the addition of a hydrophobic coating, thermogravimetric curves are similar to each other and are characterized by a loss of sample mass. This is possible with increasing temperature due to the processes of dehydration, destruction of hemicellulose, lignin, and cellulose with the formation of a non-combustible residue. During heat treatment of cellulose in the region of temperatures of 150÷450 °C, two processes take place in parallel. This is dehydration, accompanied by the destruction of the pyranose cycle and carbonization to form a carbon residue. Also, the process of destruction of glycosidic bonds while maintaining hydroxyl groups, accompanied by regrouping of pyranose cycles.
Development of an untraditional technique to control the structure of the output flow from a vortex chamber
Authors: Turyk Volodymyr , Kochin Viktor , Moroz Volodymyr , Miliukov Dmytro 
Published: January 2023

A technique of using coherent vortex formations of the dead-end zone of the vortex chamber of the end type as a controlling factor influencing the structure and characteristics of the output flow has been developed. The kinematic parameters of the flow relative to chambers with elongated and extremely short dead-end parts in the range of Reynolds numbers according to the parameters of the nozzle Re=47080–86530 were investigated. The reaction of the flow structure in the output sections of the vortex chambers was determined experimentally using thermoanemometry. Profiles of time-averaged transversal and axial velocity projections, as well as corresponding values of the relative intensity of velocity pulsations, were obtained. It was found that at Re=86530, the elongation of the dead-end part of the chamber leads to a decrease in the initial cross-section of the transversal component by 15 % with an increase in the axial component by 19.7 %, and, at Re=47080, to a decrease in the transversal component by 21 % with an increase in the axial component by 8.5 %. This indicates the redistribution of kinetic energy from transversal to axial energy motion, which is confirmed by the analysis of the corresponding intensity profiles of the velocity pulsations in the output section of the chamber in the near-wall and near-axis zones of the flow. The integral intensity of the velocity pulsations along the initial cross-section of comparable chamber designs increases in a chamber with an elongated dead-end part with almost no additional energy losses. The obtained results form the basis of a rational method of controlling the macro- and microstructure of flows, which determines the efficiency of mass exchange and heat exchange processes in vortex chambers of the end type. Such designs are characteristic of vortex mixers, burners of industrial furnaces, furnace devices of hot water and steam boilers, and other technological and power equipment
Assessment of the stressed-strained state of a reinforced transport pipe under the combined effect of ambient temperature and static loads
Authors: Kovalchuk Vitalii , Rybak Roman , Hnativ Yuriy , Tkachenko Valentyna , Onyshchenko Artur , Kravets Ivan , Hermaniuk Yuliia , Babyak Mykola , Hembara Nataliya , Velhan Ihor 
Published: January 2023

The object of this study is a reinforced three-layer transport pipe, which is subjected to the joint action of ambient temperature and static loading of the road subgrade soil.
The analytical model for assessing the stressed-strained state of reinforced three-layer pipes, under the combined action of temperature and static loads, has been improved using the theory of elasticity.
The stressed-strained state of the reinforced pipe was assessed taking into account the values of the joint action of temperature and loads from vehicles, the physical and mechanical parameters of structural materials, and the geometric parameters of the pipe.
As a result of the calculation of the reinforced multilayer pipe, it was found that the maximum movements that occur on the outside of the defective pipe are 0.64 mm, the metal pipe – 0.75 mm, and in the concrete mortar (fine-grained concrete) – 0.69 mm.
It was established that under the combined action of ambient temperature and static loads from the road subgrade soil, ring stresses are maximum. They are 151 MPa. Axial stresses are also high – 141 MPa. At the same time, the maximum radial stresses are the smallest – 37.4 MPa.
It has been established that a small difference in displacements occurs on the contact of structural materials of the reinforced pipe. However, the magnitude of the stresses is high. The maximum difference in ring stresses was 73 MPa, while the difference in radial and axial stresses was up to 1.0 MPa.
It has been established that to restore the bearing capacity of damaged reinforced concrete pipes, it is possible to use the repair technology by the method of "sleeving". It involves pulling a metal pipe into the middle of the layer damaged with concrete mortar remaining between the concrete defective and the new metal pipes.
Improvement of Turkish delight production technology using a developed multi-component fruit and vegetable paste
Authors: Kasabova Kateryna , Samokhvalova Olga , Zagorulko Aleksey , Zahorulko Andrii , Babaiev Serhii , Bereza Olena , Ponomarenko Nataliia , Tesliuk Hennadii , Yukhno Viktor 
Published: January 2023

The object of this study is the technology of Turkish delight production based on fruit and vegetable paste with a high content of physiologically functional ingredients. The chemical composition of Turkish delight has been optimized by introducing physiologically functional ingredients. As a source of physiologically functional ingredients, it was proposed to use a multicomponent fruit and vegetable paste from apples, quince, pumpkins, made in an improved way. The technique is characterized by concentrating the paste in the rotary evaporator for 30...42 s at a temperature of 60...63 °C under conditions of preheating the purée to 50...52 °C. The dependence of the effective viscosity on the shear rate of samples of fruit and vegetable pastes was determined and it was found that the best indicators characterized the paste with a formulation ratio of raw materials: apple – 30 %; quince – 50 %; pumpkin – 20 %. The resulting paste has good organoleptic properties and a high content of dietary fiber, ascorbic acid, polyphenolic compounds.
It has been established that the production of Turkish delight with the addition of the developed fruit and vegetable paste provides the product with good organoleptic characteristics. Namely, it is characterized by a sweet-sour taste with a pleasant smell of quince, rich yellow-orange color, gelatinous, slightly viscous consistency, and the proper shape with a clear contour. Also, the addition of fruit and vegetable paste reduces the formulation amount of starch by 20 % while the resulting Turkish delight is characterized by a high strength value τ=38 kPa.
The improved technology of Turkish delight could expand the range of "healthy products" with increased nutritional value. In addition, the proposed technique and the modes of concentration make it possible to organize the process of paste production using energy-saving equipment.
Revealing the influence of structural and operational parameters of a wooden hydrostatic bearing on its performance
Authors: Nazin Vladimir 
Published: January 2023

Wooden bearings, lubricated with water and other low-viscosity lubricants, have been used for centuries. In steamship engines, turbines of hydroelectric power plants and propellers of submarines, it is proposed to use wooden hydrostatic bearings, which are guaranteed to provide liquid friction and have high reliability.
The object of this study is hydrostatic and thermal processes in sliding supports with wooden hydrostatic bearings. The influence of the design and operational parameters of a wooden hydrostatic bearing on its performance was tackled. Theoretical dependences are given, making it possible to determine the bearing capacity and temperature increase in the hydrostatic bearing. Quantitative values of specific pressures on the working surface of the bearing and an increase in the temperature of the working fluid due to friction and pumping losses were established.
It was found that the specific pressures of the liquid do not exceed the tensile strength of the bearing material. The reduction in load capacity due to an increase in the temperature of the working fluid was 10.95 %, owing to the small change in the temperature of the working fluid in hydrostatic bearings. The results of the study make it possible to establish the permissible boundaries for the purpose of the design and operational parameters of the hydrostatic bearing ensuring its operability.
For the effective use of hydrostatic wooden bearings at the listed facilities, it is necessary to have a system for supplying lubricant to the bearing under high pressure. The system should include filters to clean the lubricant from impurities. The theoretical dependences built allow designers of hydrostatic bearings to use them in practical calculations
Antinociceptive effects of Treculia africana decne (african breadfruit) seed lectin in Wistar rats
Authors: Awe Joseph Obabiolorunkosi , Osukoya Olukemi Adetutu , Adewale Olusola Bolaji , Obafemi Tajudeen Olabisi , Afolabi Olakunle Bamikole , Kuku Adenike 
Published: January 2023

The aim: The use of synthetic compounds to treat many diseases must be strictly controlled due to their potential health hazards. Hence, there is a need to search for natural products to serve as safe alternatives to synthetic products. This study investigated the antinociceptive effects and anti-inflammatory activities of Treculia africana seed lectin.
Materials and methods: Lectins were purified from Treculia africana seeds using ion exchange and size-exclusion chromatography. The antinociceptive activity of the lectin was assessed in Wistar rats using abdominal writhing and paw-licking tests induced by acetic acid and formalin, respectively. Anti-inflammatory activity was assessed using carrageenan-induced paw oedema.
Results: Treculia africana seed lectins at 10 mg/kg (p.o.) produced sedation, reduced ambulation, reduced response to touch, analgesia, and decreased defecation in experimental animals. Administration of Treculia africana seed lectin (1 mg/kg and 10 mg/kg) in experimental animals significantly reduced (P < 0.05) acetic acid-induced muscular writhing in a dose-dependent manner with 23.88 and 36.80 per cent inhibition, respectively. Both early and late phases of formalin-induced nociception were significantly inhibited (P < 0.001) by the lectin at all doses (0.1, 1.0 and 10.0 mg/kg), comparably with the standard drug, diclofenac sodium. At 10 mg/kg, T. africana lectin caused a 69.12 % and 65.55 % reduction in both early and late phases of formalin-induced paw licking. Treculia africana lectin also significantly brought about a reduction (P < 0.05) in inflammation induced by sub-plantar injection of carrageenan as measured by a decrease in paw swollenness.
Conclusion: The study showed that Treculia africana lectin possesses antinociceptive and anti-inflammatory properties and can potentially be employed therapeutics to ameliorate pain and inflammation
Research of the influence of Melanizol pessaries on background of “chemical” vaginitis in rats
Authors: Dolzhykova Olena , Yeromenko Rymma 
Published: January 2023

The aim. to study the therapeutic influence of new pessaries Melanizol based on metronidazole and tea tree oil on the background of model of “chemical” vaginitis in female rats.
Materials and methods. The therapeutic effect of pessaries Melanizol was studied in female rats on the model of "chemical" vaginitis with using argentum nitrate, which provokes vaginitis not burdened by infection. Against the background of vaginitis, the general condition of animals, the dynamics of body weight, the morphological composition of peripheral blood and the erythrocyte sedimentation rate (ESR), pH, biochemical parameters (total protein, ALT and glucose), temperature in the vagina of rats, macroscopically assessed changes in the vaginal mucosa (VM) were studied.
Results and discussion. Against the background of pathology in the animals, a shift in the studied indicators was observed. Pessaries Melanizol at the dose of 21 mg/kg make a therapeutic effect on the model of experimental "chemical" vaginitis, caused by argentum nitrate, as indicated by the restoration of the VM state, reduced the number of leukocytes, restored the percentage composition of the leukocyte formula, reduced the amount of total protein and the cytolytic enzyme ALT in blood serum and vaginal contents, which indicates the anti-inflammatory and cytoprotective effect of the studied agent. The recovery of vaginal temperature, pH and the amount of glucose in the vaginal contents was also observed, which indicates the normalization of homeostasis in the vagina of experimental animals. According to these effects, the studied pessaries Melanizol were superior to the reference drug "Gravagin" at the dose of 30 mg/kg and were not inferior to the reference drug Hippophaes oleum pessaries (HOP) at the dose of 17.64 mg/kg.
Conclusions. The therapeutic effect of new pessaries Melanizol based on metronidazole and tea tree oil on the model of "chemical" vaginitis in female rats has been proven. The investigated pessaries Melanizol are a promising drug for the treatment of non-specific vaginitis and require further research in this direction
Development of a risk management method for development projects of providers of housing and utility services
Authors: Chernenko Yuri , Haidaienko Oksana , Tkachenko Valentyn 
Published: January 2023

The object of research in the work is the processes of anti-risk management of projects for the development of providers of housing and utility services (PHUS). Particular attention is required to limit the management of the activities of the PHUS, related to the specifics of the housing and utility services sector. They have a significant impact on the need for the PHUS to constantly adjust the direction of efforts. They force companies to constantly monitor the progress of their projects and redirect resources. The priority should be development projects with the highest and fastest financial results with minimal risks. An essential lever for improving the effectiveness of anti-risk management in the projects for the development of PHUS is the possibility of adjusting the priorities for the implementation of these projects as much as possible in real time.
This study developed a method of anti-risk management of development projects for housing and utility services providers, which consists in integrating such approaches into a single process, such as the implementation of management automation and decision-making algorithms. As well as the implementation of a process approach in risk management and decision making; implementation of benchmarking; and building a dynamic organizational structure for managing development projects
The scheme of the method of anti-risk management of projects for the development of housing and utility services providers includes the following steps:
– formation of a register of projects for the development of providers of housing and utility services;
– identification of limitations of projects for the development of providers of housing and utility services;
– implementation of automation of management and algorithmization of decision-making in the management of projects for the PHUS development;
– application of a process approach in risk management and decision-making in the management of projects for the PHUS development;
– building a dynamic organizational structure for managing development projects;
– implementation of benchmarking in the management of projects for the PHUS development;
– adjusting the PHUS priorities for the implementation of development projects in real time;
– increasing the effectiveness of anti-risk management by directing the main resources to the PHUS development projects with minimal risks and the most significant economic result.
The integration of all the above blocks into the anti-risk management of PHUS development projects makes it possible to increase the efficiency of managing these projects by directing the main resources to them with minimal risks and the most significant economic result. This, in turn, will improve the performance of providers of housing and utility services in terms of increasing income and reducing costs.
Research and comparative analysis of the qualitative parameters of food powders produced from grain raw materials using an improved jet mill
Authors: Changgao Sun , Olkhovikov Oleh , Xiaojin Gao , Marynin Andrii , Sichen Zhang , Shevchenko Anastasiia , Botong Sun , Yue Zhao 
Published: January 2023

The object of the study is samples of food powders obtained by grinding the products of the collection and processing of a number of grain crops, using air-grinding technology in an improved jet mill. One of the most important problems of the modern food industry is that for the production of flour from cereals endosperm is used while the most important nutrients are found in shells and the germ of the grain.
As a result of its grinding in conventional mills, common at existing mills, large pieces of bran and a large variation in the particle size of the grinding products are obtained, and this method is energy-intensive.
According to the authors, the best solution to ensure truly whole grain grinding – that is, grinding grains with shells – is air grinding in jet mills. An improved jet mill makes it possible to grind both endosperm and grain shells into flour of the same consistency. From the same amount of raw material, therefore, it is possible to produce approximately 30 % more final grinding products. It is also important that the improved jet mill, under proven conditions, spends no more energy for grinding than a conventional mill.
For research, the most popular products ground in such a mill were taken – wheat flour (black grain), buckwheat flour (from roasted buckwheat) and wheat bran. The first two products are whole grain milled, and the bran is produced from the collapse of wheat grown in accordance with the requirements of organic farming. Samples of powders obtained by grinding these products in an improved jet mill were compared with control samples – produced from similar raw materials in a roller mill – the most common design in service with mills. Physical indicators of the powders, thermophysical properties and biotechnological parameters were carried out.
The obtained results allow to state that whole grain grinding produced on an improved jet mill has the characteristics better or close to standard types of flour produced on conventional mills. It allows them to be used without significant changes in the formulation of products with their addition (bakery, pasta, etc.), and also to create new dietary, healthy products rich in biologically active substances.