Pub Date : 1900-01-01DOI: 10.32523/2616-7263-2021-137-4-18-28
A. Kadyrov, A. Ganyukov, B. Sarsembekov, Zhanara Zhunusbekova, K. Sinelnikov
The authors have developed and investigated a mathematical model of the operation of an ultrasonic automobile muffler, which allows calculating the necessary parameters for effective work on cleaning the exhaust gas of motor transport. An experiment has been conducted to prove the effectiveness of ultrasonic exposure for cleaning the exhaust gas of motor vehicles. There are considered forces acting on a gas particle moving in an ultrasonic automobile muffler, the values of the velocities of motion of coagulated particles horizontally and vertically. There are determined the coagulation coefficient in an ultrasonic muffler. The effectiveness of ultrasonic exposure to the exhaust gas of motor transport has been proven during the experiment and has a promising development of this direction of cleaning aerosols from harmful impurities by the proposed method. According to the results of the experiment, the concentration of hydrocarbon CH decreased by more than 2 times, at 1000 rpm from 50 ppm/min to 27 ppm/min.
{"title":"Investigation of the process of ultrasonic cleaning of exhaust gases from an internal combustion engine","authors":"A. Kadyrov, A. Ganyukov, B. Sarsembekov, Zhanara Zhunusbekova, K. Sinelnikov","doi":"10.32523/2616-7263-2021-137-4-18-28","DOIUrl":"https://doi.org/10.32523/2616-7263-2021-137-4-18-28","url":null,"abstract":"The authors have developed and investigated a mathematical model of the operation of an ultrasonic automobile muffler, which allows calculating the necessary parameters for effective work on cleaning the exhaust gas of motor transport. An experiment has been conducted to prove the effectiveness of ultrasonic exposure for cleaning the exhaust gas of motor vehicles. There are considered forces acting on a gas particle moving in an ultrasonic automobile muffler, the values of the velocities of motion of coagulated particles horizontally and vertically. There are determined the coagulation coefficient in an ultrasonic muffler. The effectiveness of ultrasonic exposure to the exhaust gas of motor transport has been proven during the experiment and has a promising development of this direction of cleaning aerosols from harmful impurities by the proposed method. According to the results of the experiment, the concentration of hydrocarbon CH decreased by more than 2 times, at 1000 rpm from 50 ppm/min to 27 ppm/min.","PeriodicalId":168248,"journal":{"name":"BULLETIN of L.N. Gumilyov Eurasian National University. Technical Science and Technology Series","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127787339","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 : 1900-01-01DOI: 10.32523/2616-7263-2021-135-2-37-48
G. Tleulenova, A. Zhussupbekov, Z. Shakhmov, A. Omarov
The article presents the results of numerical analysis for pile foundation in seasonally freezing soil ground. This project uses the static tests of soil by piles at the construction site of Cargo off-loading facilities (Prorva, Atyrau region, Kazakhstan). The project area is located along the east coast of the Caspian Sea, both onshore and offshore, near the Prorva oilfield, Kazakhstan. At present, the North Caspian Sea has a limited water depth (max 8 m). According to the test results have been made design changes in the pile foundation. Static tests (SCLT) were carried out on the piles with 16m in length and precast concrete joint pile foundations with a total length of 22m to 27m. This research is important for an understanding of the interaction mechanism of precast composite joint piles with seasonally freezing soil ground of the Caspian Sea coastal area of the site.
{"title":"Numerical analysis of pile foundations in seasonally freezing soil ground","authors":"G. Tleulenova, A. Zhussupbekov, Z. Shakhmov, A. Omarov","doi":"10.32523/2616-7263-2021-135-2-37-48","DOIUrl":"https://doi.org/10.32523/2616-7263-2021-135-2-37-48","url":null,"abstract":"The article presents the results of numerical analysis for pile foundation in seasonally freezing soil ground. This project uses the static tests of soil by piles at the construction site of Cargo off-loading facilities (Prorva, Atyrau region, Kazakhstan). The project area is located along the east coast of the Caspian Sea, both onshore and offshore, near the Prorva oilfield, Kazakhstan. At present, the North Caspian Sea has a limited water depth (max 8 m). According to the test results have been made design changes in the pile foundation. Static tests (SCLT) were carried out on the piles with 16m in length and precast concrete joint pile foundations with a total length of 22m to 27m. This research is important for an understanding of the interaction mechanism of precast composite joint piles with seasonally freezing soil ground of the Caspian Sea coastal area of the site.","PeriodicalId":168248,"journal":{"name":"BULLETIN of L.N. Gumilyov Eurasian National University. Technical Science and Technology Series","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133990447","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 : 1900-01-01DOI: 10.32523/2616-7263-2019-129-4-91-100
K. Iskakov, Z. Mukanova, K. Baranchuk, Z. Oralbekova, D. Omarkhanova
{"title":"Characteristics and the interface of the signal database according to GPR data","authors":"K. Iskakov, Z. Mukanova, K. Baranchuk, Z. Oralbekova, D. Omarkhanova","doi":"10.32523/2616-7263-2019-129-4-91-100","DOIUrl":"https://doi.org/10.32523/2616-7263-2019-129-4-91-100","url":null,"abstract":"","PeriodicalId":168248,"journal":{"name":"BULLETIN of L.N. Gumilyov Eurasian National University. Technical Science and Technology Series","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126080589","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 : 1900-01-01DOI: 10.32523/2616-7263-2021-136-3-46-55
N. Sarsenbayev, B. Sarsenbayev, Zh. Aimenov, A. Aimenov, N. B. Ainabekov
Considering the physical chemistry of grinding it is worth quoting the grinding of mineral building material as “the change of physical-chemical properties of finely ground materials can not only be due to the reducing the particle sizes, at mechanical grinding significant changes of the crystalline structure of their surface layers (thickness 15-20 microns) take place, in many cases the technological properties of fine powders are not so much due to dispersability but are namely due to the structure rupture”, at that the energy costs for this are “significantly greater than for the exposal of surfaces with a clean cleavage”. The speed of heterogeneous chemical processes involving fine powders is determined primarily not by the magnitude of their specific surface area, as commonly is believed, but by the decrease of energy of activation as the result of crystalline structure rupture and amorphization. However, both specific surface area and energy demands to achieve are actual evaluation of the effectiveness of any material grinding at a particular unit. The main factor of the production process of cements of low water demand is the grinding, characterized by grindability.
{"title":"Optimization of compositions and technology of production of small-clinker floured cements using the most effective fillers","authors":"N. Sarsenbayev, B. Sarsenbayev, Zh. Aimenov, A. Aimenov, N. B. Ainabekov","doi":"10.32523/2616-7263-2021-136-3-46-55","DOIUrl":"https://doi.org/10.32523/2616-7263-2021-136-3-46-55","url":null,"abstract":"Considering the physical chemistry of grinding it is worth quoting the grinding of mineral building material as “the change of physical-chemical properties of finely ground materials can not only be due to the reducing the particle sizes, at mechanical grinding significant changes of the crystalline structure of their surface layers (thickness 15-20 microns) take place, in many cases the technological properties of fine powders are not so much due to dispersability but are namely due to the structure rupture”, at that the energy costs for this are “significantly greater than for the exposal of surfaces with a clean cleavage”. The speed of heterogeneous chemical processes involving fine powders is determined primarily not by the magnitude of their specific surface area, as commonly is believed, but by the decrease of energy of activation as the result of crystalline structure rupture and amorphization. However, both specific surface area and energy demands to achieve are actual evaluation of the effectiveness of any material grinding at a particular unit. The main factor of the production process of cements of low water demand is the grinding, characterized by grindability.","PeriodicalId":168248,"journal":{"name":"BULLETIN of L.N. Gumilyov Eurasian National University. Technical Science and Technology Series","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121709012","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 : 1900-01-01DOI: 10.32523/2616-7263-2022-138-1-44-58
A. Issina, B.E. Ozganbayeva, D.O. Kaliyev
The article is given to consider the issues of madrasahs in Kazakhstan at diverse time stages of the medieval period. The overwhelming significance of old madrasahs within the structure of the city and past is considered. The study is analyzing inclinations within the plan of madrasahs, issues of arrangement of architectural arranging, utilitarian and compositional arrangements. Taking under consideration the pertinence of the strategic importance of these objects which are the legacy of the Turkic-speaking states, within the future, it foreordained the reason of the consideration of this article - to recognize the most bunches of factors that affected the compositional strategies of organizing spaces. Based on this purpose, the accessible chronicled materials made it conceivable to decide the objectives of the study: – uncovering the part of madrasah as a key structure of Islamic education; – investigation of the components affecting the method of shaping; – assurance of the specifics of the building and arrange We advertised the strategy to uncover the philosophical meaning of the structural composition of instructive teaches as a chunk of craftsmanship. The town-planning highlights, structural and imaginative characteristics of the objects of the investigation are described based on the hunt for approaches to the plan of madrasahs where the contact of the ideological views of Islam and the Turkic conventions, both profoundly and structurally is revealed. As a result, the essential guideline within the plan of madrasahs was uncovered. This guideline demonstrates that they were city-forming objects. This made it conceivable to assist recognize the essential standards of Kazakh conventional design of the medieval period. The method of the research moreover analyzes the method of separation of building parameters and changes within the space-planning structure of the objects beneath thought. As a result, a bunch of variables that influenced these changes is determined. The best structural methods and building arrangements within the organization of a favorable discuss conditioning framework of a building beneath the characteristic and climatic conditions of the southern, western and central locales of Kazakhstan have been distinguished which moreover had a noteworthy impact on the arrangement of instructive institutions.
{"title":"Architectural and spatial organization of Muslim educational institutions in Kazakhstan in the medieval period","authors":"A. Issina, B.E. Ozganbayeva, D.O. Kaliyev","doi":"10.32523/2616-7263-2022-138-1-44-58","DOIUrl":"https://doi.org/10.32523/2616-7263-2022-138-1-44-58","url":null,"abstract":"The article is given to consider the issues of madrasahs in Kazakhstan at diverse time stages of the medieval period. The overwhelming significance of old madrasahs within the structure of the city and past is considered. The study is analyzing inclinations within the plan of madrasahs, issues of arrangement of architectural arranging, utilitarian and compositional arrangements. Taking under consideration the pertinence of the strategic importance of these objects which are the legacy of the Turkic-speaking states, within the future, it foreordained the reason of the consideration of this article - to recognize the most bunches of factors that affected the compositional strategies of organizing spaces. Based on this purpose, the accessible chronicled materials made it conceivable to decide the objectives of the study: – uncovering the part of madrasah as a key structure of Islamic education; – investigation of the components affecting the method of shaping; – assurance of the specifics of the building and arrange We advertised the strategy to uncover the philosophical meaning of the structural composition of instructive teaches as a chunk of craftsmanship. The town-planning highlights, structural and imaginative characteristics of the objects of the investigation are described based on the hunt for approaches to the plan of madrasahs where the contact of the ideological views of Islam and the Turkic conventions, both profoundly and structurally is revealed. As a result, the essential guideline within the plan of madrasahs was uncovered. This guideline demonstrates that they were city-forming objects. This made it conceivable to assist recognize the essential standards of Kazakh conventional design of the medieval period. The method of the research moreover analyzes the method of separation of building parameters and changes within the space-planning structure of the objects beneath thought. As a result, a bunch of variables that influenced these changes is determined. The best structural methods and building arrangements within the organization of a favorable discuss conditioning framework of a building beneath the characteristic and climatic conditions of the southern, western and central locales of Kazakhstan have been distinguished which moreover had a noteworthy impact on the arrangement of instructive institutions.","PeriodicalId":168248,"journal":{"name":"BULLETIN of L.N. Gumilyov Eurasian National University. Technical Science and Technology Series","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121775255","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 : 1900-01-01DOI: 10.32523/2616-7263-2021-135-2-82-93
Bing Wu, Hong-hu Zhu, Cao Dingfeng
The thermal conductivity is crucial for determining heat transfer in frozen soil. However, it is a challenge to obtain accurate measurement values due to the instability of soil properties. Recently, the fiber optic sensing technologies has enabled accurate and distributed in-situ monitoring of a variety of geotechnical parameters. This paper aims to explore the feasibility of actively heated fiber Bragg grating (AH-FBG) method in measuring thermal conductivity of frozen soil. A series of laboratory experiments were performed on frozen soil samples at different initial temperatures from −16 to 5 ℃. The theoretical upper and lower limits of thermal conductivity were used to evaluate the AHFBG measurements. The thermal conductivity recorded by a heat transfer analyzer was used to identify the measurement accuracy. The experimental results that the AH-FBG method can accurately measure the thermal conductivity of frozen soil when the initial temperature is below −6 ℃, and the measurement error is within acceptable range of 0.8%. When the soil temperature is between −6 and 0 ℃, significant measurement errors were observed due to the disturbance of heating to the frozen soil.
{"title":"Measuring thermal conductivity of frozen soil using fiber optic sensors","authors":"Bing Wu, Hong-hu Zhu, Cao Dingfeng","doi":"10.32523/2616-7263-2021-135-2-82-93","DOIUrl":"https://doi.org/10.32523/2616-7263-2021-135-2-82-93","url":null,"abstract":"The thermal conductivity is crucial for determining heat transfer in frozen soil. However, it is a challenge to obtain accurate measurement values due to the instability of soil properties. Recently, the fiber optic sensing technologies has enabled accurate and distributed in-situ monitoring of a variety of geotechnical parameters. This paper aims to explore the feasibility of actively heated fiber Bragg grating (AH-FBG) method in measuring thermal conductivity of frozen soil. A series of laboratory experiments were performed on frozen soil samples at different initial temperatures from −16 to 5 ℃. The theoretical upper and lower limits of thermal conductivity were used to evaluate the AHFBG measurements. The thermal conductivity recorded by a heat transfer analyzer was used to identify the measurement accuracy. The experimental results that the AH-FBG method can accurately measure the thermal conductivity of frozen soil when the initial temperature is below −6 ℃, and the measurement error is within acceptable range of 0.8%. When the soil temperature is between −6 and 0 ℃, significant measurement errors were observed due to the disturbance of heating to the frozen soil.","PeriodicalId":168248,"journal":{"name":"BULLETIN of L.N. Gumilyov Eurasian National University. Technical Science and Technology Series","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121834238","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 : 1900-01-01DOI: 10.32523/2616-7263-2022-138-1-7-14
Y. T. Auyesbayev, M. Arpabekov
This study describes the ways and methods of strengthening the lower and upper structure of the railway track for separate sections with heavy and high-speed train traffic. The dimensions of the rail settlements in the center of the car wheel, methods of reducing the elastic vertical deformations of the upper structure of the railway track under the trains are proposed, the proposed track designs for the heavy traffic of freight trains are given. Increasing the strength of soft soils at the top of the subgrade to the level of strong and hydrophobic ones in a short time, possibly by including soil stabilization of the main site in the program of major or medium repairs of the track. This requires the use of high-performance technologies and mechanization - for example, cold recycling technology. The necessary machines and mechanisms for stabilizing the soil of the main site of the railway subgrade used in transport construction are cement trucks, distributors of cement (or ash-cement mixture), road milling machines and recyclers, motor graders, watering machines, rollers, etc. In addition, the technical requirements for high-speed passenger trains are considered.
{"title":"Strengthening the railway track on sections with heavy and high-speed train traffic","authors":"Y. T. Auyesbayev, M. Arpabekov","doi":"10.32523/2616-7263-2022-138-1-7-14","DOIUrl":"https://doi.org/10.32523/2616-7263-2022-138-1-7-14","url":null,"abstract":"This study describes the ways and methods of strengthening the lower and upper structure of the railway track for separate sections with heavy and high-speed train traffic. The dimensions of the rail settlements in the center of the car wheel, methods of reducing the elastic vertical deformations of the upper structure of the railway track under the trains are proposed, the proposed track designs for the heavy traffic of freight trains are given. Increasing the strength of soft soils at the top of the subgrade to the level of strong and hydrophobic ones in a short time, possibly by including soil stabilization of the main site in the program of major or medium repairs of the track. This requires the use of high-performance technologies and mechanization - for example, cold recycling technology. The necessary machines and mechanisms for stabilizing the soil of the main site of the railway subgrade used in transport construction are cement trucks, distributors of cement (or ash-cement mixture), road milling machines and recyclers, motor graders, watering machines, rollers, etc. In addition, the technical requirements for high-speed passenger trains are considered.","PeriodicalId":168248,"journal":{"name":"BULLETIN of L.N. Gumilyov Eurasian National University. Technical Science and Technology Series","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115059025","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 : 1900-01-01DOI: 10.32523/2616-7263-2019-126-1-67-69
А.К. Муханбеткалиева, Астана Қазақстан Л.Н. Гумилев атындағы Еуразия Ұлттық Университетi, Ж.А. Сейтенова
{"title":"Existing development to task automation","authors":"А.К. Муханбеткалиева, Астана Қазақстан Л.Н. Гумилев атындағы Еуразия Ұлттық Университетi, Ж.А. Сейтенова","doi":"10.32523/2616-7263-2019-126-1-67-69","DOIUrl":"https://doi.org/10.32523/2616-7263-2019-126-1-67-69","url":null,"abstract":"","PeriodicalId":168248,"journal":{"name":"BULLETIN of L.N. Gumilyov Eurasian National University. Technical Science and Technology Series","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133933907","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 : 1900-01-01DOI: 10.32523/2616-68-36-2020-131-2-66-77
Kaziyeva G., E. M., Sagnayevа S., Sembina G., A. A.
{"title":"Environmental Monitoring Data Analysis OLAP Toolplatform","authors":"Kaziyeva G., E. M., Sagnayevа S., Sembina G., A. A.","doi":"10.32523/2616-68-36-2020-131-2-66-77","DOIUrl":"https://doi.org/10.32523/2616-68-36-2020-131-2-66-77","url":null,"abstract":"","PeriodicalId":168248,"journal":{"name":"BULLETIN of L.N. Gumilyov Eurasian National University. Technical Science and Technology Series","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133015823","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 : 1900-01-01DOI: 10.32523/2616-7263-2019-126-1-32-40
Баизак Разакович Исакулов, Актобе Казахстан Актюбинский региональный государственный университ, А.К. Байбулов, Н.В. Иваницкая
{"title":"Study of strength formation mechanism and destruction of sulfur-containing wood concrete composites under various loads","authors":"Баизак Разакович Исакулов, Актобе Казахстан Актюбинский региональный государственный университ, А.К. Байбулов, Н.В. Иваницкая","doi":"10.32523/2616-7263-2019-126-1-32-40","DOIUrl":"https://doi.org/10.32523/2616-7263-2019-126-1-32-40","url":null,"abstract":"","PeriodicalId":168248,"journal":{"name":"BULLETIN of L.N. Gumilyov Eurasian National University. Technical Science and Technology Series","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133927985","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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