Pub Date : 2021-10-26DOI: 10.1109/IREC52758.2021.9624737
Meriem Dardouri, S. K. El Khil, K. Jelassi
Ruggedness, reliability while ensuring the highest possible efficiency, the lowest cost and keeping a superior performance are the main desirable characteristics of grid-connected photovoltaic systems. This has led to the development of several grid-connected PV systems topologies whose purposes are: (i) ensuring PV maximum power extraction (ii) DC-Link voltage regulation to guarantee balanced power exchange (iii) injection of grid current while maintaining prescribed Total Harmonic Distortion and power factor. Such topologies usually require the use of many voltage and current sensors in addition to a complex control strategy. With a view to reduce the system cost and control complexity, this paper proposes a sensorless Model Predictive Control based control strategy of a single-stage single-phase grid-connected photovoltaic system. Unlike other control methods, the proposed control scheme requires less number of sensor (two): only one current sensor and one voltage sensor to that required (five) in other control strategies. Detailed analysis and development of the sensorless multiloop control scheme are presented. The performance of the proposed technique is confirmed by means of simulation results under different environmental conditions in MATLAB/Simulink.
{"title":"Model Predictive Control of a Single-Phase Single-Stage Grid-Connected PV System with LCL Filter and Reduced Sensors Number","authors":"Meriem Dardouri, S. K. El Khil, K. Jelassi","doi":"10.1109/IREC52758.2021.9624737","DOIUrl":"https://doi.org/10.1109/IREC52758.2021.9624737","url":null,"abstract":"Ruggedness, reliability while ensuring the highest possible efficiency, the lowest cost and keeping a superior performance are the main desirable characteristics of grid-connected photovoltaic systems. This has led to the development of several grid-connected PV systems topologies whose purposes are: (i) ensuring PV maximum power extraction (ii) DC-Link voltage regulation to guarantee balanced power exchange (iii) injection of grid current while maintaining prescribed Total Harmonic Distortion and power factor. Such topologies usually require the use of many voltage and current sensors in addition to a complex control strategy. With a view to reduce the system cost and control complexity, this paper proposes a sensorless Model Predictive Control based control strategy of a single-stage single-phase grid-connected photovoltaic system. Unlike other control methods, the proposed control scheme requires less number of sensor (two): only one current sensor and one voltage sensor to that required (five) in other control strategies. Detailed analysis and development of the sensorless multiloop control scheme are presented. The performance of the proposed technique is confirmed by means of simulation results under different environmental conditions in MATLAB/Simulink.","PeriodicalId":266552,"journal":{"name":"2021 12th International Renewable Energy Congress (IREC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124150715","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 : 2021-10-26DOI: 10.1109/IREC52758.2021.9624739
Hamza Alnawafah, A. Harb
Low voltage grids face critical problems due to the increasing penetration of renewable energy generators and the increasing demand for electrical power in Jordan due to the high population growth. The deviation of the acceptable voltage range and grid equipment overloads are the two main problems that compromise the smooth operation of the distribution grid. In this paper, the decentralized smart grid control strategy has been implemented on the current grid located in Jordan at a low voltage level to emulate how the Smart Grid concept would work as near as to reality. The DIgSILENT Power Factory software and Python are used in this study to obtain the results. The simulation results show excellent performance in terms of loading mitigation and voltage stability by integrating decentralized smart grid control
由于可再生能源发电机的日益普及以及约旦人口的高速增长对电力的需求不断增加，低压电网面临着严峻的问题。配电网可接受电压范围偏差和电网设备过载是影响配电网正常运行的两个主要问题。本文将分布式智能电网控制策略应用于约旦现有电网的低电压水平，以模拟智能电网概念如何尽可能接近现实。本研究使用DIgSILENT Power Factory软件和Python来获得结果。仿真结果表明，通过集成分散智能电网控制，系统在负荷缓解和电压稳定方面具有优异的性能
{"title":"Modeling and Control for Hybrid Renewable Energy System in Smart Grid Scenario - A Case Study Part of Jordan Grid","authors":"Hamza Alnawafah, A. Harb","doi":"10.1109/IREC52758.2021.9624739","DOIUrl":"https://doi.org/10.1109/IREC52758.2021.9624739","url":null,"abstract":"Low voltage grids face critical problems due to the increasing penetration of renewable energy generators and the increasing demand for electrical power in Jordan due to the high population growth. The deviation of the acceptable voltage range and grid equipment overloads are the two main problems that compromise the smooth operation of the distribution grid. In this paper, the decentralized smart grid control strategy has been implemented on the current grid located in Jordan at a low voltage level to emulate how the Smart Grid concept would work as near as to reality. The DIgSILENT Power Factory software and Python are used in this study to obtain the results. The simulation results show excellent performance in terms of loading mitigation and voltage stability by integrating decentralized smart grid control","PeriodicalId":266552,"journal":{"name":"2021 12th International Renewable Energy Congress (IREC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130698754","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 : 2021-10-26DOI: 10.1109/IREC52758.2021.9624868
Abdulrahman Heebah, A. Nouh, Mohamed Bara, Omar. G. Mrehel
Mineral oils, used to insulate and to cool the power transformers, are often from non-renewable sources. Considering the large number of these important equipment in service, they emit pollutants into the immediate environment. To overcome the disadvantages of paraffinic and naphthenic oils, sustainable transformer oils are proposed by researchers. The aim of this paper is to present experimental tests on castor, olive and corn oils based breakdown voltage test. Employing oil breakdown voltage testing device and taking into account the moisture content and the adding of contaminants to the oil samples, the experimental tests have been done. The results showed that the vegetable oils have breakdown voltage complying with the international standard requirement. So, they can be used in power transformer instead of the mineral oils.
{"title":"Breakdown Voltage Test on Green Oils as Alternative to Petroleum Oils for Transformer Insulation Application used in Libyan Distribution Network","authors":"Abdulrahman Heebah, A. Nouh, Mohamed Bara, Omar. G. Mrehel","doi":"10.1109/IREC52758.2021.9624868","DOIUrl":"https://doi.org/10.1109/IREC52758.2021.9624868","url":null,"abstract":"Mineral oils, used to insulate and to cool the power transformers, are often from non-renewable sources. Considering the large number of these important equipment in service, they emit pollutants into the immediate environment. To overcome the disadvantages of paraffinic and naphthenic oils, sustainable transformer oils are proposed by researchers. The aim of this paper is to present experimental tests on castor, olive and corn oils based breakdown voltage test. Employing oil breakdown voltage testing device and taking into account the moisture content and the adding of contaminants to the oil samples, the experimental tests have been done. The results showed that the vegetable oils have breakdown voltage complying with the international standard requirement. So, they can be used in power transformer instead of the mineral oils.","PeriodicalId":266552,"journal":{"name":"2021 12th International Renewable Energy Congress (IREC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132128971","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 : 2021-10-26DOI: 10.1109/IREC52758.2021.9624753
Ibtissem Abari, M. Hamouda, J. Ben Hadj Slama
This research paper deals with the open-circuit fault diagnosis in three-phase three-level Neutral Point Clamped (NPC) inverter. The proposed non-intrusive method identifies the faulty MOSFET based on the emitted near-field above the power conversion system. To detect the faulty switch, the wavelet packet transform is applied to extract a distinguishable electromagnetic signature. For the fault isolation, we focus on the two statistical moments, which are the mean value and the kurtosis of the radiated emissions. The proposed approach is verified through experimental results.
{"title":"Three-Level NPC Inverter Fault Diagnosis using Wavelet Packet Transform and Statistical Analysis of the Emitted Near-Field","authors":"Ibtissem Abari, M. Hamouda, J. Ben Hadj Slama","doi":"10.1109/IREC52758.2021.9624753","DOIUrl":"https://doi.org/10.1109/IREC52758.2021.9624753","url":null,"abstract":"This research paper deals with the open-circuit fault diagnosis in three-phase three-level Neutral Point Clamped (NPC) inverter. The proposed non-intrusive method identifies the faulty MOSFET based on the emitted near-field above the power conversion system. To detect the faulty switch, the wavelet packet transform is applied to extract a distinguishable electromagnetic signature. For the fault isolation, we focus on the two statistical moments, which are the mean value and the kurtosis of the radiated emissions. The proposed approach is verified through experimental results.","PeriodicalId":266552,"journal":{"name":"2021 12th International Renewable Energy Congress (IREC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134194309","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 : 2021-10-26DOI: 10.1109/IREC52758.2021.9624814
Aida Younis, C. Gennequin, E. A. Aad, Jane Estephane, S. Aouad
The catalytic dry reforming of polypropylene was performed in a two-stage fixed bed reactor. The plastic pyrolysis took place in the first stage, and the catalytic-dry reforming (presence of catalyst and carbon dioxide) of the produced pyrolyzed gases took place in the second stage reactor. The catalysts used (yRuxNiAl2O3) were synthesized via wet impregnation, calcined, and then reduced at 800°C, prior to the pyrolysis-reforming reaction. The results showed that the increase in nickel loading increased the syngas yield. The addition of small amounts of ruthenium as a metal promoter significantly improved the conversion of polypropylene into syngas. Thus, the catalytic dry reforming of plastics is proven to be a promising solution to tackle the non-recycled plastic waste problem while valorizing the greenhouse gas carbon dioxide and producing synthesis gas (H2 + CO).
{"title":"Valorization of plastics in the presence of Ru-Ni/Al2O3 catalysts to produce syngas","authors":"Aida Younis, C. Gennequin, E. A. Aad, Jane Estephane, S. Aouad","doi":"10.1109/IREC52758.2021.9624814","DOIUrl":"https://doi.org/10.1109/IREC52758.2021.9624814","url":null,"abstract":"The catalytic dry reforming of polypropylene was performed in a two-stage fixed bed reactor. The plastic pyrolysis took place in the first stage, and the catalytic-dry reforming (presence of catalyst and carbon dioxide) of the produced pyrolyzed gases took place in the second stage reactor. The catalysts used (yRuxNiAl2O3) were synthesized via wet impregnation, calcined, and then reduced at 800°C, prior to the pyrolysis-reforming reaction. The results showed that the increase in nickel loading increased the syngas yield. The addition of small amounts of ruthenium as a metal promoter significantly improved the conversion of polypropylene into syngas. Thus, the catalytic dry reforming of plastics is proven to be a promising solution to tackle the non-recycled plastic waste problem while valorizing the greenhouse gas carbon dioxide and producing synthesis gas (H2 + CO).","PeriodicalId":266552,"journal":{"name":"2021 12th International Renewable Energy Congress (IREC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133520982","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 : 2021-10-26DOI: 10.1109/IREC52758.2021.9624917
Ibrahim O. Muhaisen, M.N. Abdul Kadir
This study aims to mitigate the problem of current ripple associated with model predictive control of inverter. The suggested modified model predictive control strategy operates the inverter in two states per switching interval: an active state and a zero state. A modified voltage model-based prediction equations derived to determine the optimum active state and its duty ratio according to the cost function. Simulation results show that the modified model predictive control reduces the current harmonics by up to 25% compared to the basic model predictive control.
{"title":"Current harmonics mitigation of model predictive controlled inverter by zero state modulation","authors":"Ibrahim O. Muhaisen, M.N. Abdul Kadir","doi":"10.1109/IREC52758.2021.9624917","DOIUrl":"https://doi.org/10.1109/IREC52758.2021.9624917","url":null,"abstract":"This study aims to mitigate the problem of current ripple associated with model predictive control of inverter. The suggested modified model predictive control strategy operates the inverter in two states per switching interval: an active state and a zero state. A modified voltage model-based prediction equations derived to determine the optimum active state and its duty ratio according to the cost function. Simulation results show that the modified model predictive control reduces the current harmonics by up to 25% compared to the basic model predictive control.","PeriodicalId":266552,"journal":{"name":"2021 12th International Renewable Energy Congress (IREC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122339612","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 : 2021-10-26DOI: 10.1109/IREC52758.2021.9624903
Asma Alfergani, Salma Elkawafi, Mahmoud Walid, Mohammed Elsharksi, M. Fathi, A. Khalil, F. Mohamed
In this paper, the stability of the DC microgrid with voltage control loop is assessed using simulation and verified experimentally. The stability analysis of the DC microgrid is based on a buck converter. The proportional-integral (PI) controller is used to generate a control signal to operate the switch of the buck converter. Arduino is used to implement the PI controller. In addition, a Genetic Algorithm (GA) is used as an optimization technique in simulation work to find the optimum value of the PI controller gains. The simulation and practical results show that the stable operation of the voltage of the DC microgrid is achieved.
{"title":"Assess the Stability of the Off-grid DC Microgrid with Voltage Control loop","authors":"Asma Alfergani, Salma Elkawafi, Mahmoud Walid, Mohammed Elsharksi, M. Fathi, A. Khalil, F. Mohamed","doi":"10.1109/IREC52758.2021.9624903","DOIUrl":"https://doi.org/10.1109/IREC52758.2021.9624903","url":null,"abstract":"In this paper, the stability of the DC microgrid with voltage control loop is assessed using simulation and verified experimentally. The stability analysis of the DC microgrid is based on a buck converter. The proportional-integral (PI) controller is used to generate a control signal to operate the switch of the buck converter. Arduino is used to implement the PI controller. In addition, a Genetic Algorithm (GA) is used as an optimization technique in simulation work to find the optimum value of the PI controller gains. The simulation and practical results show that the stable operation of the voltage of the DC microgrid is achieved.","PeriodicalId":266552,"journal":{"name":"2021 12th International Renewable Energy Congress (IREC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122818267","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 : 2021-10-26DOI: 10.1109/IREC52758.2021.9624882
M. Herrmann, L. Hofmann
The ongoing growth of offshore wind parks (WP) worldwide will lead to increasingly more complex offshore grid structures in the long term, requiring high-voltage direct current (HVDC) control concepts for their connections towards onshore. As such, these concepts are the main focus of the governmental funded German "North Seas Offshore Network II" (NSON II) project, considering the offshore WP development in the German North Sea. This paper presents the accordingly adapted offshore HVDC control concept for AC-side parallel HVDC link operation and in detail compares the behavioral differences in case of direct offshore converter terminal coupling and coupling across own transformers. Negative impacts are obtained regarding unequal power distribution and the mapping of individual converter power limitations, thus control concept enhancements are suggested, assessed and successfully tested, aiming at control concept usage in more complex AC-side meshed offshore grids studied further on within NSON II.
{"title":"Enhancement of a Control Concept for Parallel HVDC Link Operation to Increase Flexibility for Offshore Wind Park Grid Connections","authors":"M. Herrmann, L. Hofmann","doi":"10.1109/IREC52758.2021.9624882","DOIUrl":"https://doi.org/10.1109/IREC52758.2021.9624882","url":null,"abstract":"The ongoing growth of offshore wind parks (WP) worldwide will lead to increasingly more complex offshore grid structures in the long term, requiring high-voltage direct current (HVDC) control concepts for their connections towards onshore. As such, these concepts are the main focus of the governmental funded German \"North Seas Offshore Network II\" (NSON II) project, considering the offshore WP development in the German North Sea. This paper presents the accordingly adapted offshore HVDC control concept for AC-side parallel HVDC link operation and in detail compares the behavioral differences in case of direct offshore converter terminal coupling and coupling across own transformers. Negative impacts are obtained regarding unequal power distribution and the mapping of individual converter power limitations, thus control concept enhancements are suggested, assessed and successfully tested, aiming at control concept usage in more complex AC-side meshed offshore grids studied further on within NSON II.","PeriodicalId":266552,"journal":{"name":"2021 12th International Renewable Energy Congress (IREC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128285807","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 : 2021-10-26DOI: 10.1109/IREC52758.2021.9624844
Dhouha Hassen, N. Chekir
The objective of this paper is to evaluate the potential of the desalination process by multiple effect coupled with solar energy to ensure the production of fresh water at low cost and low impact. Through a study based on thermal and exegetic analysis to optimize the performances of this process for two different water feed configurations, we look for the possibilities to make the multi-effect process more competitive from a thermal, economic and environmental point of view.
{"title":"Thermal and exergetic study of multi-effect distillation system coupled with solar thermal energy","authors":"Dhouha Hassen, N. Chekir","doi":"10.1109/IREC52758.2021.9624844","DOIUrl":"https://doi.org/10.1109/IREC52758.2021.9624844","url":null,"abstract":"The objective of this paper is to evaluate the potential of the desalination process by multiple effect coupled with solar energy to ensure the production of fresh water at low cost and low impact. Through a study based on thermal and exegetic analysis to optimize the performances of this process for two different water feed configurations, we look for the possibilities to make the multi-effect process more competitive from a thermal, economic and environmental point of view.","PeriodicalId":266552,"journal":{"name":"2021 12th International Renewable Energy Congress (IREC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128765164","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 : 2021-10-26DOI: 10.1109/IREC52758.2021.9624813
Haloui Ismahene, Meskaldji Hiba, Bourayou Ghada, Benlouad Romaissa, M. Abdeslam-Hassen
Ultrasonic assisted extraction was used to extract vegetable oil from Chia (Salvia hispanica L.) seeds and the biological properties of the oil were determined. A design of a four- factor box Behnken-type experiment was used to analyze the impact on the oil extraction yield of the amplitude (40, 55, 70 %), the number of pulsations per minute (40, 50, 60), the extraction time (20, 25, 30min) and the ethanol concentration (50, 60, 70%), applying the response surface methodology (RSM). The ethanol concentration and the number of pulses had the greatest effects on the extraction efficiency. The optimum yield was 5.48%, obtained with amplitude of 70%, a number of pulsations per minute of 50.73, an extraction time of 30min and an ethanol concentration of 50%. The biological activity of the obtained oil varied according to the operating conditions and exhibited a strong antioxidant activity up to an IC50 of 3.22 μg/mL and an excellent antidiabetic activity of 105.27 μg /ml.
{"title":"Ultrasonic assisted extraction of vegetable oil from Chia seeds (Salvia hispanica L.) and its antioxidant and anti-diabetic activities","authors":"Haloui Ismahene, Meskaldji Hiba, Bourayou Ghada, Benlouad Romaissa, M. Abdeslam-Hassen","doi":"10.1109/IREC52758.2021.9624813","DOIUrl":"https://doi.org/10.1109/IREC52758.2021.9624813","url":null,"abstract":"Ultrasonic assisted extraction was used to extract vegetable oil from Chia (Salvia hispanica L.) seeds and the biological properties of the oil were determined. A design of a four- factor box Behnken-type experiment was used to analyze the impact on the oil extraction yield of the amplitude (40, 55, 70 %), the number of pulsations per minute (40, 50, 60), the extraction time (20, 25, 30min) and the ethanol concentration (50, 60, 70%), applying the response surface methodology (RSM). The ethanol concentration and the number of pulses had the greatest effects on the extraction efficiency. The optimum yield was 5.48%, obtained with amplitude of 70%, a number of pulsations per minute of 50.73, an extraction time of 30min and an ethanol concentration of 50%. The biological activity of the obtained oil varied according to the operating conditions and exhibited a strong antioxidant activity up to an IC50 of 3.22 μg/mL and an excellent antidiabetic activity of 105.27 μg /ml.","PeriodicalId":266552,"journal":{"name":"2021 12th International Renewable Energy Congress (IREC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116689891","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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