Pub Date : 2019-10-01DOI: 10.1109/ICOECS46375.2019.8949928
G. Kornilov, O. Gazizova, A. Bunin, Mihail Bulanov, A. Karyakin
One of the most energy-intensive productions of the metallurgical enterprise is the oxygen-converter. The power consumers of such workshops put high demands on the voltage quality. At the same time, electrical receivers of such workshops can significantly reduce the power quality. The authors had estimated the voltage level in the existing 10 kV network of the oxygen converter shop. The voltage drop below the level allowed by the conditions of work of electrical receivers had been revealed. Causes of voltage reduction in conditions complex configuration network had been determined. A mathematical model has been developed to study the power quality indicators of the workshop in question, taking into account the characteristics of the supply network. The influence of the supply voltage level, the regulatory effect of the load, the load power and the configuration of the supply network on the voltage level had been investigated. A set of measures to improve the quality of the network voltage has been developed. Taking into account the indicators of power quality, compensating devices are recommended for installation. A technical and economic comparison of the installation options for compensating devices has been made, taking into account the power and electricity loss in the supply and distribution network of the workshop. The overall level of loss in the composition of the power consumption of the oxygen converter shop had been evaluated. Its decrease had been shown when introducing recommended measures.
{"title":"Improving the quality of voltage in the conditions of the oxygen-converter shop of metallurgical production","authors":"G. Kornilov, O. Gazizova, A. Bunin, Mihail Bulanov, A. Karyakin","doi":"10.1109/ICOECS46375.2019.8949928","DOIUrl":"https://doi.org/10.1109/ICOECS46375.2019.8949928","url":null,"abstract":"One of the most energy-intensive productions of the metallurgical enterprise is the oxygen-converter. The power consumers of such workshops put high demands on the voltage quality. At the same time, electrical receivers of such workshops can significantly reduce the power quality. The authors had estimated the voltage level in the existing 10 kV network of the oxygen converter shop. The voltage drop below the level allowed by the conditions of work of electrical receivers had been revealed. Causes of voltage reduction in conditions complex configuration network had been determined. A mathematical model has been developed to study the power quality indicators of the workshop in question, taking into account the characteristics of the supply network. The influence of the supply voltage level, the regulatory effect of the load, the load power and the configuration of the supply network on the voltage level had been investigated. A set of measures to improve the quality of the network voltage has been developed. Taking into account the indicators of power quality, compensating devices are recommended for installation. A technical and economic comparison of the installation options for compensating devices has been made, taking into account the power and electricity loss in the supply and distribution network of the workshop. The overall level of loss in the composition of the power consumption of the oxygen converter shop had been evaluated. Its decrease had been shown when introducing recommended measures.","PeriodicalId":371743,"journal":{"name":"2019 International Conference on Electrotechnical Complexes and Systems (ICOECS)","volume":"23 Suppl 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131165765","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 : 2019-10-01DOI: 10.1109/ICOECS46375.2019.8949935
I. Bolvashenkov, J. Kammermann, H. Herzog, A. Brazhnikov, N. Dovzhenko, V. Panteleev
Creating the highest possible lifting force is an urgent task for a number of technical devices: aircraft, underwater apparatuses, wind generators, hydro-generators, etc. Unfortunately, all currently known methods of aero/hydro lift creation are already completely used. However, the authors of this paper discovered a novel principle of creating lift, presented in this paper and named by the authors “energy-difference principle of creation of the aero/hydro-dynamic lift”. This new principle can be used both in combination with traditional methods of creating a lifting force and separately. The paper discusses various methods of implementing energy-difference principle of creation of the aero/hydro-dynamic lift and the possibility of its application in aviation, wind power, etc. It is shown that the use of this principle allows, in particular, to create a new type of wind generators that are more energy efficient than the existing ones.
{"title":"Novel Principle of Aero/Hydro-Dynamic Lift Creation, Methods of Its Technical Implementation, and Prospects of Its Application","authors":"I. Bolvashenkov, J. Kammermann, H. Herzog, A. Brazhnikov, N. Dovzhenko, V. Panteleev","doi":"10.1109/ICOECS46375.2019.8949935","DOIUrl":"https://doi.org/10.1109/ICOECS46375.2019.8949935","url":null,"abstract":"Creating the highest possible lifting force is an urgent task for a number of technical devices: aircraft, underwater apparatuses, wind generators, hydro-generators, etc. Unfortunately, all currently known methods of aero/hydro lift creation are already completely used. However, the authors of this paper discovered a novel principle of creating lift, presented in this paper and named by the authors “energy-difference principle of creation of the aero/hydro-dynamic lift”. This new principle can be used both in combination with traditional methods of creating a lifting force and separately. The paper discusses various methods of implementing energy-difference principle of creation of the aero/hydro-dynamic lift and the possibility of its application in aviation, wind power, etc. It is shown that the use of this principle allows, in particular, to create a new type of wind generators that are more energy efficient than the existing ones.","PeriodicalId":371743,"journal":{"name":"2019 International Conference on Electrotechnical Complexes and Systems (ICOECS)","volume":"175 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132106265","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 : 2019-10-01DOI: 10.1109/ICOECS46375.2019.8949879
R. Khamitov, A. Gritsay, Denis Tyunkov, I. Zakharov
The approach to modeling low-consumption electrohydrodynamic superchargers from the point of view of an electromechanical energy converter is considered. A supercharger equivalent circuit is proposed and justified, based on a system of equations of electrohydrodynamic processes in the supercharger conversion zone. Subsequent experimental studies of single stages of an electrohydrodynamic supercharger (with powers of the order of a few watts) confirm the adequacy of the equivalent circuit. The main purpose of such a scheme is to design pump units with structurally combined electrical and hydraulic subsystems, in which operation under optimal conditions or close to them is ensured by the operation mode of the electrical subsystem (high-voltage power converter).
{"title":"The equivalent circuit of the electrohydrodynamic pumps","authors":"R. Khamitov, A. Gritsay, Denis Tyunkov, I. Zakharov","doi":"10.1109/ICOECS46375.2019.8949879","DOIUrl":"https://doi.org/10.1109/ICOECS46375.2019.8949879","url":null,"abstract":"The approach to modeling low-consumption electrohydrodynamic superchargers from the point of view of an electromechanical energy converter is considered. A supercharger equivalent circuit is proposed and justified, based on a system of equations of electrohydrodynamic processes in the supercharger conversion zone. Subsequent experimental studies of single stages of an electrohydrodynamic supercharger (with powers of the order of a few watts) confirm the adequacy of the equivalent circuit. The main purpose of such a scheme is to design pump units with structurally combined electrical and hydraulic subsystems, in which operation under optimal conditions or close to them is ensured by the operation mode of the electrical subsystem (high-voltage power converter).","PeriodicalId":371743,"journal":{"name":"2019 International Conference on Electrotechnical Complexes and Systems (ICOECS)","volume":"149 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133348992","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 : 2019-10-01DOI: 10.1109/ICOECS46375.2019.8949989
D. Gusakov, Denis Masalimov, V. Vavilova
The paper presents studies of a transformer with a hybrid magnetic core to increase the efficiency of an aircraft transformer-rectifier unit. The hybrid magnetic core consists of an amorphous magnetic material and precision magnetic soft alloy. The characteristics of the alloys are given, and a method of combining their positive properties for use as a transformer magnetic core is also shown. The basic mathematical expressions for calculating the magnetic parameters of a hybrid magnetic core are given. Based on analytical calculations, the calculation of the main geometric and electromagnetic parameters of a transformer with a hybrid magnetic core was made. Based on the calculations, an experimental prototype of a transformer with a hybrid magnetic core was developed. The results of experimental studies of a transformer with a hybrid magnetic core are given.
{"title":"Transformer with a Hybrid Magnetic Core for High-Efficiency Aircraft Transformer-Rectifier Unit","authors":"D. Gusakov, Denis Masalimov, V. Vavilova","doi":"10.1109/ICOECS46375.2019.8949989","DOIUrl":"https://doi.org/10.1109/ICOECS46375.2019.8949989","url":null,"abstract":"The paper presents studies of a transformer with a hybrid magnetic core to increase the efficiency of an aircraft transformer-rectifier unit. The hybrid magnetic core consists of an amorphous magnetic material and precision magnetic soft alloy. The characteristics of the alloys are given, and a method of combining their positive properties for use as a transformer magnetic core is also shown. The basic mathematical expressions for calculating the magnetic parameters of a hybrid magnetic core are given. Based on analytical calculations, the calculation of the main geometric and electromagnetic parameters of a transformer with a hybrid magnetic core was made. Based on the calculations, an experimental prototype of a transformer with a hybrid magnetic core was developed. The results of experimental studies of a transformer with a hybrid magnetic core are given.","PeriodicalId":371743,"journal":{"name":"2019 International Conference on Electrotechnical Complexes and Systems (ICOECS)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114560693","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 : 2019-10-01DOI: 10.1109/ICOECS46375.2019.8950001
R. Sattarov, Evgeniy M. Fedosov, R. R. Garafutdinov, T. Volkova
The main methods of laboratory work are considered and the program complex PSCAD is proposed as a tool for modeling power systems for laboratory work. Examples of basic experiments on electromagnetic transients in PSCAD are given. The conclusion about the effectiveness of PSCAD using for diagnosis of cable lines insulation by partial discharges measuring are given.
{"title":"Application of PSCAD in Practical Studies of Electrical Power Engineering Students","authors":"R. Sattarov, Evgeniy M. Fedosov, R. R. Garafutdinov, T. Volkova","doi":"10.1109/ICOECS46375.2019.8950001","DOIUrl":"https://doi.org/10.1109/ICOECS46375.2019.8950001","url":null,"abstract":"The main methods of laboratory work are considered and the program complex PSCAD is proposed as a tool for modeling power systems for laboratory work. Examples of basic experiments on electromagnetic transients in PSCAD are given. The conclusion about the effectiveness of PSCAD using for diagnosis of cable lines insulation by partial discharges measuring are given.","PeriodicalId":371743,"journal":{"name":"2019 International Conference on Electrotechnical Complexes and Systems (ICOECS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123734722","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 : 2019-10-01DOI: 10.1109/ICOECS46375.2019.8949960
J. Kammermann, I. Bolvashenkov, Jon Lekuona Ugalde, H. Herzog
The electrification of vehicles and their autonomous operation is a current topic. The resulting high requirements on reliability for safety-critical applications leads to the need of fault tolerance in order to provide fail-operational modes. One possibility to increase fault tolerance of electric traction drives is increasing the number of phases of the machine, since a performance degradation is possible while using multiple phases. This paper targets a method to find the optimal number of phases considering fault tolerance based on the requirements on system performance. It is shown that a higher phase number is not always the best choice regarding fault tolerance and reliability. This fact is depending on the performance demand after failure required in order to assure a fail-operational mode.
{"title":"Choice of Phase Number for a Multiphase Traction Motor to Meet Requirements on Fault Tolerance","authors":"J. Kammermann, I. Bolvashenkov, Jon Lekuona Ugalde, H. Herzog","doi":"10.1109/ICOECS46375.2019.8949960","DOIUrl":"https://doi.org/10.1109/ICOECS46375.2019.8949960","url":null,"abstract":"The electrification of vehicles and their autonomous operation is a current topic. The resulting high requirements on reliability for safety-critical applications leads to the need of fault tolerance in order to provide fail-operational modes. One possibility to increase fault tolerance of electric traction drives is increasing the number of phases of the machine, since a performance degradation is possible while using multiple phases. This paper targets a method to find the optimal number of phases considering fault tolerance based on the requirements on system performance. It is shown that a higher phase number is not always the best choice regarding fault tolerance and reliability. This fact is depending on the performance demand after failure required in order to assure a fail-operational mode.","PeriodicalId":371743,"journal":{"name":"2019 International Conference on Electrotechnical Complexes and Systems (ICOECS)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122285481","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 : 2019-10-01DOI: 10.1109/ICOECS46375.2019.8950021
E. Muravyova, E. Enikeeva
In this paper we analyze the energy consumption of booster pump station control systems. To deal with this task, two simulation models of liquid level control in the iThink program were developed. The first model was designed using only a frequency converter, and the second model was using a frequency converter and a Fuzzy Controller. An imitation of the liquid level control process was carried out, and from this graph of pump energy consumption were obtained. Based on the initial and obtained data, a comparative analysis of the effectiveness of the considered control systems was carried out, and the power consumption of the considered control systems of two simulation models of a booster pumping station were also presented in graphical form. The analysis of the models examined showed that it is more economical and safer to use a control circuit with a frequency converter and a Fuzzy Controller.
{"title":"Analysis of the Power Consumption of the Booster Pump Station Using Simulation Models of Fluid Control","authors":"E. Muravyova, E. Enikeeva","doi":"10.1109/ICOECS46375.2019.8950021","DOIUrl":"https://doi.org/10.1109/ICOECS46375.2019.8950021","url":null,"abstract":"In this paper we analyze the energy consumption of booster pump station control systems. To deal with this task, two simulation models of liquid level control in the iThink program were developed. The first model was designed using only a frequency converter, and the second model was using a frequency converter and a Fuzzy Controller. An imitation of the liquid level control process was carried out, and from this graph of pump energy consumption were obtained. Based on the initial and obtained data, a comparative analysis of the effectiveness of the considered control systems was carried out, and the power consumption of the considered control systems of two simulation models of a booster pumping station were also presented in graphical form. The analysis of the models examined showed that it is more economical and safer to use a control circuit with a frequency converter and a Fuzzy Controller.","PeriodicalId":371743,"journal":{"name":"2019 International Conference on Electrotechnical Complexes and Systems (ICOECS)","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114561970","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 : 2019-10-01DOI: 10.1109/ICOECS46375.2019.8949984
A. V. Sapsalev, S. Kharitonov, R. Aipov, M. Zharkov, Konstantin A. Kuratov, N. P. Savin
The article describes the design scheme of the magnetic gearbox of radial design. The kinematic scheme of connecting the prime motor with the working mechanism by means of a magnetic reducer is reduced to a computational model of a two-mass system with an elastic constraint, due to the force action of the magnetic field. The equations of a mathematical model of a magnetic reducer, on the basis of which its block diagram was synthesized, were compiled.
{"title":"Prospects for the Use of a Magnetic Gearbox in the Electrical Equipment of Aircraft","authors":"A. V. Sapsalev, S. Kharitonov, R. Aipov, M. Zharkov, Konstantin A. Kuratov, N. P. Savin","doi":"10.1109/ICOECS46375.2019.8949984","DOIUrl":"https://doi.org/10.1109/ICOECS46375.2019.8949984","url":null,"abstract":"The article describes the design scheme of the magnetic gearbox of radial design. The kinematic scheme of connecting the prime motor with the working mechanism by means of a magnetic reducer is reduced to a computational model of a two-mass system with an elastic constraint, due to the force action of the magnetic field. The equations of a mathematical model of a magnetic reducer, on the basis of which its block diagram was synthesized, were compiled.","PeriodicalId":371743,"journal":{"name":"2019 International Conference on Electrotechnical Complexes and Systems (ICOECS)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115960326","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 : 2019-10-01DOI: 10.1109/ICOECS46375.2019.8949927
E. Abdullina, V. Efanov
The problem of providing supermaneuverability of aircraft is considered taking into account the possibilities that are opened in a electrically-actuated aircraft. The concept of creating a electrically-actuated aircraft provides for the replacement of hydraulic drives to electric drives powered by electric energy sources. It is noted that modern electromechanical actuators are already superior to hydraulic actuators in a number of indicators. This is especially important for a flight control system that needs fast and powerful drives for aerodynamic control of the aircraft. The flight control system provides stability and controllability of the aircraft at all stages and flight modes. In this regard, when solving the problem of ensuring supermaneuverability of the aircraft, it is necessary to take into account the permissible limits of changing the parameters of its movement. This problem is solved using logic devices that implement algorithms of channel selection. A method of synthesis of coordinated control of the roll angle control loop and the roll angular velocity limitation loop is proposed.
{"title":"Providing supermaneuverability for electrically-actuated aircraft","authors":"E. Abdullina, V. Efanov","doi":"10.1109/ICOECS46375.2019.8949927","DOIUrl":"https://doi.org/10.1109/ICOECS46375.2019.8949927","url":null,"abstract":"The problem of providing supermaneuverability of aircraft is considered taking into account the possibilities that are opened in a electrically-actuated aircraft. The concept of creating a electrically-actuated aircraft provides for the replacement of hydraulic drives to electric drives powered by electric energy sources. It is noted that modern electromechanical actuators are already superior to hydraulic actuators in a number of indicators. This is especially important for a flight control system that needs fast and powerful drives for aerodynamic control of the aircraft. The flight control system provides stability and controllability of the aircraft at all stages and flight modes. In this regard, when solving the problem of ensuring supermaneuverability of the aircraft, it is necessary to take into account the permissible limits of changing the parameters of its movement. This problem is solved using logic devices that implement algorithms of channel selection. A method of synthesis of coordinated control of the roll angle control loop and the roll angular velocity limitation loop is proposed.","PeriodicalId":371743,"journal":{"name":"2019 International Conference on Electrotechnical Complexes and Systems (ICOECS)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123219874","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 : 2019-10-01DOI: 10.1109/ICOECS46375.2019.8950020
M. Guzairov, A. Frid, A. Vulfin, V. Berkholts
The issues of creating a system for monitoring the integrity of the accumulated data in a modular system for collecting, storing and processing telemetric information about the state of an aircraft's power plant based on the use of its model and modern technologies for the intelligent analysis of telemetric information are considered. A block diagram of a data integrity monitoring system based on the power plant model and an intellectual analysis of technological time is proposed, which allows to identify the fact of unauthorized access to the system and to increase the security of telemetry information from unauthorized modifications. A model for analyzing the accumulated telemetry data based on the technologies of neural network processing of technological time series has been developed. Numerical modeling using field data has confirmed the efficiency of the proposed analysis model.
{"title":"The concept of integrity of telemetric information about the state of an aircraft power plant monitoring","authors":"M. Guzairov, A. Frid, A. Vulfin, V. Berkholts","doi":"10.1109/ICOECS46375.2019.8950020","DOIUrl":"https://doi.org/10.1109/ICOECS46375.2019.8950020","url":null,"abstract":"The issues of creating a system for monitoring the integrity of the accumulated data in a modular system for collecting, storing and processing telemetric information about the state of an aircraft's power plant based on the use of its model and modern technologies for the intelligent analysis of telemetric information are considered. A block diagram of a data integrity monitoring system based on the power plant model and an intellectual analysis of technological time is proposed, which allows to identify the fact of unauthorized access to the system and to increase the security of telemetry information from unauthorized modifications. A model for analyzing the accumulated telemetry data based on the technologies of neural network processing of technological time series has been developed. Numerical modeling using field data has confirmed the efficiency of the proposed analysis model.","PeriodicalId":371743,"journal":{"name":"2019 International Conference on Electrotechnical Complexes and Systems (ICOECS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125666222","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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