Pub Date : 2023-07-28DOI: 10.29235/2524-2369-2023-68-3-255-264
N. Makovskaya
The article presents the results of a study of the peculiarities of the organization of labor of Belarusian workers, which has already undergone changes in the context of digital transformation and innovative development of the economy, and requires some improvement in the Republic of Belarus. The organization of labor is presented from the standpoint of the methodology of labor economics and methods of sociological analysis. New methodological approaches to monitoring the organization of labor based on sociological methods and economic and mathematical tools are presented. The factors influencing the state of labor organization and working conditions in the workplace are discussed. Analysis and assessments were obtained using an expert database of opinions of Belarusian workers. The results of the assessments showed that there are a number of national peculiarities in the organization of labor, which are associated with the reasons for changing jobs, with working conditions and wages at the workplace, with the availability of additional income for workers, with the level of job satisfaction. It is proved that: in Belarusian organizations, the authority of the leader is high, and he determines the desire of employees to perform an additional amount of workload; work with better working conditions and a smaller workload is a significant priority when choosing the trajectories of the labor movement of workers in Belarusian organizations.
{"title":"Features of organization of labour of Belarusian workers","authors":"N. Makovskaya","doi":"10.29235/2524-2369-2023-68-3-255-264","DOIUrl":"https://doi.org/10.29235/2524-2369-2023-68-3-255-264","url":null,"abstract":"The article presents the results of a study of the peculiarities of the organization of labor of Belarusian workers, which has already undergone changes in the context of digital transformation and innovative development of the economy, and requires some improvement in the Republic of Belarus. The organization of labor is presented from the standpoint of the methodology of labor economics and methods of sociological analysis. New methodological approaches to monitoring the organization of labor based on sociological methods and economic and mathematical tools are presented. The factors influencing the state of labor organization and working conditions in the workplace are discussed. Analysis and assessments were obtained using an expert database of opinions of Belarusian workers. The results of the assessments showed that there are a number of national peculiarities in the organization of labor, which are associated with the reasons for changing jobs, with working conditions and wages at the workplace, with the availability of additional income for workers, with the level of job satisfaction. It is proved that: in Belarusian organizations, the authority of the leader is high, and he determines the desire of employees to perform an additional amount of workload; work with better working conditions and a smaller workload is a significant priority when choosing the trajectories of the labor movement of workers in Belarusian organizations.","PeriodicalId":20584,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus, Medical series","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77191341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-28DOI: 10.29235/2524-2369-2023-68-3-248-254
G. Vasilevich
The article analyzes the activities of representative and executive power bodies to ensure constitutional legality in the state. It is emphasized that in this direction can not rely only on the Constitutional Court, as other subjects of power, including bodies of general competence, have the corresponding duties. A number of proposals were made to improve the legislation and practice. Special attention is focused on the built up system of bodies of representative power, at the top of which now is the All-Belarusian People’s Assembly. The key idea of the modern constitutional course is to strengthen the rule of the people, to expand the representation of the people in the bodies of state administration.
{"title":"Bodies of representative and executive power as subjects of constitutional control","authors":"G. Vasilevich","doi":"10.29235/2524-2369-2023-68-3-248-254","DOIUrl":"https://doi.org/10.29235/2524-2369-2023-68-3-248-254","url":null,"abstract":"The article analyzes the activities of representative and executive power bodies to ensure constitutional legality in the state. It is emphasized that in this direction can not rely only on the Constitutional Court, as other subjects of power, including bodies of general competence, have the corresponding duties. A number of proposals were made to improve the legislation and practice. Special attention is focused on the built up system of bodies of representative power, at the top of which now is the All-Belarusian People’s Assembly. The key idea of the modern constitutional course is to strengthen the rule of the people, to expand the representation of the people in the bodies of state administration. ","PeriodicalId":20584,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus, Medical series","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81678818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-28DOI: 10.29235/2524-2369-2023-68-3-183-192
S. Doronina
The author of the article considers and analyzes the main directions, problems and prospects of modern domestic philosophical studies of consciousness. A number of questions related to attempts to establish the main characteristics of the phenomenon of consciousness, to determine the key concepts and categories are raised. It is described to identify the structure of modern philosophical discourse. The main lines of development of interdisciplinary research of consciousness within the framework of such rapidly developing fields of knowledge as cognitive sciences, neurobiology, synergetic, etc. have been demonstrated. The paper establishes a general range of problems and issues related to the need for meaningful specification of concepts, substantiation of the arguments used in the study of this phenomenon. Poorly developed thematic blocks related to the issues of the origin of consciousness and its localization, the definition of its structural and content elements, the establishment of the mechanisms of its functioning, the practical implementation of the acquired knowledge are identified, which indicates the need for further attempts to study this object within the framework of philosophical discourse.
{"title":"Studies of consciousness in Russian philosophical discorse: specificity, problems and prospects (on the example of the works of Russian and Belarusian authors)","authors":"S. Doronina","doi":"10.29235/2524-2369-2023-68-3-183-192","DOIUrl":"https://doi.org/10.29235/2524-2369-2023-68-3-183-192","url":null,"abstract":"The author of the article considers and analyzes the main directions, problems and prospects of modern domestic philosophical studies of consciousness. A number of questions related to attempts to establish the main characteristics of the phenomenon of consciousness, to determine the key concepts and categories are raised. It is described to identify the structure of modern philosophical discourse. The main lines of development of interdisciplinary research of consciousness within the framework of such rapidly developing fields of knowledge as cognitive sciences, neurobiology, synergetic, etc. have been demonstrated. The paper establishes a general range of problems and issues related to the need for meaningful specification of concepts, substantiation of the arguments used in the study of this phenomenon. Poorly developed thematic blocks related to the issues of the origin of consciousness and its localization, the definition of its structural and content elements, the establishment of the mechanisms of its functioning, the practical implementation of the acquired knowledge are identified, which indicates the need for further attempts to study this object within the framework of philosophical discourse.","PeriodicalId":20584,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus, Medical series","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75246856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-28DOI: 10.29235/2524-2369-2023-68-3-219-228
E. Kvilinkova
The article examines the Gagauz of Belarus – one of the small and dispersed regional groups of this ethnic group. For the first time, both in Belarusian ethnology and in Gagauz studies, the Gagauz of Belarus became the object of scientific research. The periods of formation of this ethnic group in Belarus are noted: Soviet and post-Soviet. The author analyzes the forms of identification used by the Gagauz of Belarus and the degree of their adaptation in the Belarusian sociocultural space. This article is based on field research data collected personally by the author in 2020–2022.From the data obtained during the survey, it follows that the Gagauz people feel comfortable in Belarus: the advantages of the Soviet era and socio-economic stability have been preserved here, there is no national question, the Russian language is one of the state languages, stable wages, housing, there is a future for children, etc. It is noted that the historically established tradition of intercultural dialogue and peaceful coexistence of various confessions among the population of Belarus, as well as the national policy pursued by the state, contribute to the formation of the significance of civic identity.
{"title":". Gagauz in Belarus: forms of identification and degree of adaptation","authors":"E. Kvilinkova","doi":"10.29235/2524-2369-2023-68-3-219-228","DOIUrl":"https://doi.org/10.29235/2524-2369-2023-68-3-219-228","url":null,"abstract":"The article examines the Gagauz of Belarus – one of the small and dispersed regional groups of this ethnic group. For the first time, both in Belarusian ethnology and in Gagauz studies, the Gagauz of Belarus became the object of scientific research. The periods of formation of this ethnic group in Belarus are noted: Soviet and post-Soviet. The author analyzes the forms of identification used by the Gagauz of Belarus and the degree of their adaptation in the Belarusian sociocultural space. This article is based on field research data collected personally by the author in 2020–2022.From the data obtained during the survey, it follows that the Gagauz people feel comfortable in Belarus: the advantages of the Soviet era and socio-economic stability have been preserved here, there is no national question, the Russian language is one of the state languages, stable wages, housing, there is a future for children, etc. It is noted that the historically established tradition of intercultural dialogue and peaceful coexistence of various confessions among the population of Belarus, as well as the national policy pursued by the state, contribute to the formation of the significance of civic identity.","PeriodicalId":20584,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus, Medical series","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90211593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-09DOI: 10.29235/1561-8358-2023-68-2-167-176
A. Solonar, S. Tsuprik, P. A. Khmarskiy
To improve the efficiency of the onboard correlation-extremal tracking system in the presence of isomorphic transformations of the current object image (changes in the brightness level, scale, shift and rotation of the image), as well as natural and artificial noise during the observation process, a new method of adaptive formation of the reference image is proposed. It consists in using an Interactive Multiple Model (IMM), which includes Kalman filters of the 0th and 1st order and a Singer filter of the 0th order. The proposed method of adaptation is compared with the known methods of frame-by-frame change and “exponential smoothing”. To carry out comparative modeling of a mathematical modeling complex, in which an input action simulator based on the Unity3D cross-platform environment was used, taking into account the kinematics of the movement of ground objects and the flight of an unmanned aerial vehicle in a natural coordinate system. The effectiveness of the evaluation of the tracking of ground objects of each of the evaluations was estimated by the value of the average coefficient of tracking. The obtained research results can be used in the development of reconnaissance UAVs operating in real time.
{"title":"Influence of the reference image formation method on the efficiency of the onboard correlation-extreme tracking system for tracking ground objects","authors":"A. Solonar, S. Tsuprik, P. A. Khmarskiy","doi":"10.29235/1561-8358-2023-68-2-167-176","DOIUrl":"https://doi.org/10.29235/1561-8358-2023-68-2-167-176","url":null,"abstract":"To improve the efficiency of the onboard correlation-extremal tracking system in the presence of isomorphic transformations of the current object image (changes in the brightness level, scale, shift and rotation of the image), as well as natural and artificial noise during the observation process, a new method of adaptive formation of the reference image is proposed. It consists in using an Interactive Multiple Model (IMM), which includes Kalman filters of the 0th and 1st order and a Singer filter of the 0th order. The proposed method of adaptation is compared with the known methods of frame-by-frame change and “exponential smoothing”. To carry out comparative modeling of a mathematical modeling complex, in which an input action simulator based on the Unity3D cross-platform environment was used, taking into account the kinematics of the movement of ground objects and the flight of an unmanned aerial vehicle in a natural coordinate system. The effectiveness of the evaluation of the tracking of ground objects of each of the evaluations was estimated by the value of the average coefficient of tracking. The obtained research results can be used in the development of reconnaissance UAVs operating in real time.","PeriodicalId":20584,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus, Medical series","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79557713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-09DOI: 10.29235/1561-8358-2023-68-2-95-102
A. L. Zhaludkevich, G. Govor, A. O. Larin, O. Demidenko, V. Fedosyuk, D. Tishkevich, U. Berdiev, F. F. Khasanov, Haibo Sun, Dongchu Chen
An experimental prototype of electric motor on permanent (FeNdB) magnets with switchable magnetic flux with two sectioned stators and a rotor using SMC material based on encapsulated metal powders has been developed. The method of manufacture of magnetic cores by powder metallurgy method on the basis of magnetically soft encapsulated titanium dioxide composites has been developed, including computer modeling of magnetic cores components, creation of tooling for their manufacture by pressing and selection of technological modes of pressing. Press set for manufacturing stator components by pressing in the form of a mold was made of hardened 5XHB steel. With its use magnetic components for twostator combined electric motor are pressed. The main electromagnetic characteristics of the components were measured with an express magnetometer. Complex studies showed that the magnetic components have sufficient strength and the necessary electromagnetic characteristics to create a two-stator combined electric motor of this type. An experimental sample of electric motor with maximum power of 15 kW was created on the basis of manufactured magnetic components. Advantages of composite material over electrical steel and other soft magnetic alloys allow providing their wider application in electric machines in order to increase specific power at high speed of rotation with less losses.
{"title":"Magnetically soft composites based on iron powders for creating components of a two-stator combined electric motor","authors":"A. L. Zhaludkevich, G. Govor, A. O. Larin, O. Demidenko, V. Fedosyuk, D. Tishkevich, U. Berdiev, F. F. Khasanov, Haibo Sun, Dongchu Chen","doi":"10.29235/1561-8358-2023-68-2-95-102","DOIUrl":"https://doi.org/10.29235/1561-8358-2023-68-2-95-102","url":null,"abstract":"An experimental prototype of electric motor on permanent (FeNdB) magnets with switchable magnetic flux with two sectioned stators and a rotor using SMC material based on encapsulated metal powders has been developed. The method of manufacture of magnetic cores by powder metallurgy method on the basis of magnetically soft encapsulated titanium dioxide composites has been developed, including computer modeling of magnetic cores components, creation of tooling for their manufacture by pressing and selection of technological modes of pressing. Press set for manufacturing stator components by pressing in the form of a mold was made of hardened 5XHB steel. With its use magnetic components for twostator combined electric motor are pressed. The main electromagnetic characteristics of the components were measured with an express magnetometer. Complex studies showed that the magnetic components have sufficient strength and the necessary electromagnetic characteristics to create a two-stator combined electric motor of this type. An experimental sample of electric motor with maximum power of 15 kW was created on the basis of manufactured magnetic components. Advantages of composite material over electrical steel and other soft magnetic alloys allow providing their wider application in electric machines in order to increase specific power at high speed of rotation with less losses.","PeriodicalId":20584,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus, Medical series","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81259300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-09DOI: 10.29235/1561-8358-2023-68-2-156-166
V. Volcheck, V. Stempitsky
A local thermal management solution for high electron mobility transistors based on GaN was developed using a BN layer as a heat-spreading element. The thermally conducting and electrically insulating nature of BN allows it to be placed close to the active area and to be in direct contact with the electrodes and the heat sink, thus introducing an additional heat-escaping route. The numerical simulations of a GaN high electron mobility transistor with the BN heat-spreading element revealed the improvement in the DC, breakdown, small-signal AC and transient characteristics. In case of sapphire substrate, the maximum temperature in the device structure operating at a power density of 3.3 W/mm was reduced by 82.4 °C, while the breakdown voltage at a gate-source voltage of 2 V was increased by 357 V. The cut-off frequency and the maximum oscillation frequency at a gate-source voltage of 6 V and a drain-source voltage of 30 V were enhanced by 1.38 and 1.49 times, respectively. We suppose that the proposed thermal management method can be adapted to other high-power devices.
{"title":"Device characterization of gallium nitride high electron mobility transistor with a boron nitride heat-spreading element","authors":"V. Volcheck, V. Stempitsky","doi":"10.29235/1561-8358-2023-68-2-156-166","DOIUrl":"https://doi.org/10.29235/1561-8358-2023-68-2-156-166","url":null,"abstract":"A local thermal management solution for high electron mobility transistors based on GaN was developed using a BN layer as a heat-spreading element. The thermally conducting and electrically insulating nature of BN allows it to be placed close to the active area and to be in direct contact with the electrodes and the heat sink, thus introducing an additional heat-escaping route. The numerical simulations of a GaN high electron mobility transistor with the BN heat-spreading element revealed the improvement in the DC, breakdown, small-signal AC and transient characteristics. In case of sapphire substrate, the maximum temperature in the device structure operating at a power density of 3.3 W/mm was reduced by 82.4 °C, while the breakdown voltage at a gate-source voltage of 2 V was increased by 357 V. The cut-off frequency and the maximum oscillation frequency at a gate-source voltage of 6 V and a drain-source voltage of 30 V were enhanced by 1.38 and 1.49 times, respectively. We suppose that the proposed thermal management method can be adapted to other high-power devices.","PeriodicalId":20584,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus, Medical series","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85283660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-09DOI: 10.29235/1561-8358-2023-68-2-137-148
M. Smagina, D. A. Smagin
The results of the study of the heating process of wet capillary-porous bodies of various compositions (meat products) during heat treatment in dry air and steam-air mixture under conditions of forced circulation of the heating medium are presented. The studies were carried out on a moist fat-free sample (chicken fillet meat) and a low-moisture fat sample (pork shoulder blade) formed in the form of a cylinder and a plate. It is shown that the process of heating of meat products of various compositions obeys the laws of the theory of unsteady thermal conductivity of homogeneous bodies, despite the variety of accompanying phase and physico-chemical transformations. It is established that the regular mode of non-stationary thermal conductivity occurs at Fo ≥ 0.2 for all the studied variants. Based on the processing and analysis of experimental data, criterion equations of the form Θ = f(Fo,Bi) for the central layer of the studied products in the temperature range 160–240 °C were obtained. It has been established that the peculiarities of heating of meat products in a vapor-air mixture environment lead to lower values of the coefficients μ1 and N(Bi) at regular operation compared with heating in dry air. It was found that low-moisture fatty samples are characterized by lower values of μ1 and N(Bi) in comparison with moist fat-free ones. As a result of comparison with tabular data for solids, it is shown that the experimental coefficients μ1 and N(Bi) are characterized by lower values for all the studied variants. It is established that the nature of the change in N(Bi) and μ1 for solids and the studied products is opposite, i.e., with an increase in the number of Bi, an increase in N(Bi) and μ1 is characteristic for solids, while their decrease is characteristic for the studied products. The practical significance of the research consists in improving the quality characteristics of minced meat products and optimizing operational production planning through the use of the methodology of predictive calculation of the duration of thermal operations.
{"title":"Heat exchange in wet capillary-porous bodies of various compositions during convective heating in vapor-air media","authors":"M. Smagina, D. A. Smagin","doi":"10.29235/1561-8358-2023-68-2-137-148","DOIUrl":"https://doi.org/10.29235/1561-8358-2023-68-2-137-148","url":null,"abstract":"The results of the study of the heating process of wet capillary-porous bodies of various compositions (meat products) during heat treatment in dry air and steam-air mixture under conditions of forced circulation of the heating medium are presented. The studies were carried out on a moist fat-free sample (chicken fillet meat) and a low-moisture fat sample (pork shoulder blade) formed in the form of a cylinder and a plate. It is shown that the process of heating of meat products of various compositions obeys the laws of the theory of unsteady thermal conductivity of homogeneous bodies, despite the variety of accompanying phase and physico-chemical transformations. It is established that the regular mode of non-stationary thermal conductivity occurs at Fo ≥ 0.2 for all the studied variants. Based on the processing and analysis of experimental data, criterion equations of the form Θ = f(Fo,Bi) for the central layer of the studied products in the temperature range 160–240 °C were obtained. It has been established that the peculiarities of heating of meat products in a vapor-air mixture environment lead to lower values of the coefficients μ1 and N(Bi) at regular operation compared with heating in dry air. It was found that low-moisture fatty samples are characterized by lower values of μ1 and N(Bi) in comparison with moist fat-free ones. As a result of comparison with tabular data for solids, it is shown that the experimental coefficients μ1 and N(Bi) are characterized by lower values for all the studied variants. It is established that the nature of the change in N(Bi) and μ1 for solids and the studied products is opposite, i.e., with an increase in the number of Bi, an increase in N(Bi) and μ1 is characteristic for solids, while their decrease is characteristic for the studied products. The practical significance of the research consists in improving the quality characteristics of minced meat products and optimizing operational production planning through the use of the methodology of predictive calculation of the duration of thermal operations.","PeriodicalId":20584,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus, Medical series","volume":"100 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88253610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-09DOI: 10.29235/1561-8358-2023-68-2-103-112
O. M. Mishchiruk, A. Verameichyk, O. Devoino, M. V. Neroda, B. G. Kholodar
We have studied the dependence of the characteristics, strength and plasticity, as well as the microhardness of specimens made of corrosion-resistant steel 40X13 on the modes of laser surface hardening by a fiber laser. Depending on the size of the scanning spot and the scanning speed, 3–5 tracks were applied on opposite planes of the sample with overall dimensions of 20 × 200 mm. Samples were tested for static fracture and the microhardness of the material of the samples was studied in terms of the depth of the changed structure. It was found that the fracture of the treated samples in all cases was of a brittle nature with a low level of destructive deformations at stresses below the tensile strength of the original material. The plotted tension diagrams indicate an insignificant effect of laser processing on the value of the elastic modulus of the material. Studies of the hardness of the material of the laser-hardened track and the microhardness of the material along the depth of the zone of the changed structure showed their increase up to 3–4 times compared with the initial characteristics. The results obtained can serve as a basis for studying the relationship between the modes of heating by a laser beam and the properties of the material of the hardened zone.
{"title":"Influence of laser hardening modes on the properties of 40X13 steel","authors":"O. M. Mishchiruk, A. Verameichyk, O. Devoino, M. V. Neroda, B. G. Kholodar","doi":"10.29235/1561-8358-2023-68-2-103-112","DOIUrl":"https://doi.org/10.29235/1561-8358-2023-68-2-103-112","url":null,"abstract":"We have studied the dependence of the characteristics, strength and plasticity, as well as the microhardness of specimens made of corrosion-resistant steel 40X13 on the modes of laser surface hardening by a fiber laser. Depending on the size of the scanning spot and the scanning speed, 3–5 tracks were applied on opposite planes of the sample with overall dimensions of 20 × 200 mm. Samples were tested for static fracture and the microhardness of the material of the samples was studied in terms of the depth of the changed structure. It was found that the fracture of the treated samples in all cases was of a brittle nature with a low level of destructive deformations at stresses below the tensile strength of the original material. The plotted tension diagrams indicate an insignificant effect of laser processing on the value of the elastic modulus of the material. Studies of the hardness of the material of the laser-hardened track and the microhardness of the material along the depth of the zone of the changed structure showed their increase up to 3–4 times compared with the initial characteristics. The results obtained can serve as a basis for studying the relationship between the modes of heating by a laser beam and the properties of the material of the hardened zone.","PeriodicalId":20584,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus, Medical series","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90593708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-09DOI: 10.29235/1561-8358-2023-68-2-149-155
I. I. Revinskaya, P. V. Kamlach, Yu. I. Liashchevich
In this paper, a developed hardware-software complex for studying volume parameters of breathing is considered. To estimate the volumetric parameters of breathing, a method for registering the movement of the chest and abdominal walls by changing the overall dimensions of the chest and abdomen with ranking according to the anatomical features of a person is proposed. A technique for researching the volumetric parameters of breathing based on the method of video recording of the movements of the chest and abdominal wall of a person was developed. The proposed method was used to estimate volume parameters of breathing among men aged 20–22 years. BMI (body mass index) ranged from 18.2 to 30.1 kg/m². The research of volumetric parameters of respiration was carried out using the hardware-software complex and the proposed technique for registering the biomechanics of breathing. Conclusions about the relation between volumetric parameters of breathing and the values of changes in the overall dimensions of the chest and abdomen during respiration were drawn. A correlation-regression analysis of the volumes of inhaled/exhaled air and the values of deviations of the overall dimensions of the chest and abdomen was carried out. The results obtained indicate a strong relation between volumetric parameters of breathing and the values of deviations in the overall dimensions of the chest and abdomen.
{"title":"Hardware-software complex for studying of breathing volume parameters","authors":"I. I. Revinskaya, P. V. Kamlach, Yu. I. Liashchevich","doi":"10.29235/1561-8358-2023-68-2-149-155","DOIUrl":"https://doi.org/10.29235/1561-8358-2023-68-2-149-155","url":null,"abstract":"In this paper, a developed hardware-software complex for studying volume parameters of breathing is considered. To estimate the volumetric parameters of breathing, a method for registering the movement of the chest and abdominal walls by changing the overall dimensions of the chest and abdomen with ranking according to the anatomical features of a person is proposed. A technique for researching the volumetric parameters of breathing based on the method of video recording of the movements of the chest and abdominal wall of a person was developed. The proposed method was used to estimate volume parameters of breathing among men aged 20–22 years. BMI (body mass index) ranged from 18.2 to 30.1 kg/m². The research of volumetric parameters of respiration was carried out using the hardware-software complex and the proposed technique for registering the biomechanics of breathing. Conclusions about the relation between volumetric parameters of breathing and the values of changes in the overall dimensions of the chest and abdomen during respiration were drawn. A correlation-regression analysis of the volumes of inhaled/exhaled air and the values of deviations of the overall dimensions of the chest and abdomen was carried out. The results obtained indicate a strong relation between volumetric parameters of breathing and the values of deviations in the overall dimensions of the chest and abdomen.","PeriodicalId":20584,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus, Medical series","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79809925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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