Pub Date : 2020-08-12DOI: 10.17529/jre.v16i2.14860
Muhammad Nizar Habibi, Mas Sulung Wisnu Jati, Novie Ayub Windarko, Anang Tjahjono
The conversion of solar energy into electrical can be utilized by using the solar panel, but the energy conversion ratio is still low. Maximum Power Point Tracking (MPPT) is a method used to increase energy production in the process of converting electrical to the solar panel. Artificial Neural Network (ANN) is one of the soft-computing methods that can be applied as MPPT with the advantage of having a learning process, very stable, fast, doesn’t require complicated mathematical modeling, and has good performance. ANN is proposed with input from the short circuit current of the solar panel and is used as a reference for the ANN to reach the maximum power. The process of detecting a short circuit current is indicated by a momentary decrease of the power by the solar panel. The results show the proposed algorithm can reach the maximum power operating point of the solar panel despite the change of radiation. When at maximum power operating point, ANN can hold the value, so the resulting value doesn’t change and doesn’t generate ripple. At radiation of 1000 W/m 2 and using 100 WP, ANN can produce a maximum power of 99.97 Watts with a time of 0.063 seconds.
{"title":"Maximum Power Point Tracking Menggunakan Algoritma Artificial Neural Network Berbasis Arus Hubung Singkat Panel Surya","authors":"Muhammad Nizar Habibi, Mas Sulung Wisnu Jati, Novie Ayub Windarko, Anang Tjahjono","doi":"10.17529/jre.v16i2.14860","DOIUrl":"https://doi.org/10.17529/jre.v16i2.14860","url":null,"abstract":"The conversion of solar energy into electrical can be utilized by using the solar panel, but the energy conversion ratio is still low. Maximum Power Point Tracking (MPPT) is a method used to increase energy production in the process of converting electrical to the solar panel. Artificial Neural Network (ANN) is one of the soft-computing methods that can be applied as MPPT with the advantage of having a learning process, very stable, fast, doesn’t require complicated mathematical modeling, and has good performance. ANN is proposed with input from the short circuit current of the solar panel and is used as a reference for the ANN to reach the maximum power. The process of detecting a short circuit current is indicated by a momentary decrease of the power by the solar panel. The results show the proposed algorithm can reach the maximum power operating point of the solar panel despite the change of radiation. When at maximum power operating point, ANN can hold the value, so the resulting value doesn’t change and doesn’t generate ripple. At radiation of 1000 W/m 2 and using 100 WP, ANN can produce a maximum power of 99.97 Watts with a time of 0.063 seconds.","PeriodicalId":30766,"journal":{"name":"Jurnal Rekayasa Elektrika","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41849626","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 : 2020-05-02DOI: 10.17529/jre.v16i1.14991
I. Puspasari, Jusak Jusak, W. Kusumawati, E. Oktarina
Process of identifying fetal heart sound signals is imperative in recognizing congenital heart function that caused by many factors, such as hereditary factors and food intake of pregnant mothers. This study developed a method for processing heart signals to separate normal fetal phonocardiogram signals from noise by utilizing the Complete Empirical Mode Decomposition (CEEMD) algorithm which is integrated with the Pearson Distance metric. Heart signals that have been separated from noise are then processed using the Shannon Energy equation in order to sharpen the intensity of the first heart signal (S1) and the second heart signal (S2), but at the same time suppress the intensity of the residual noise in the signal. Based on the experiment results from 75 normal fetal heart sound cycles, the model that has been developed is able to identify the S1 signal and S2 signal, the time duration of T11 (S1-S1), and the time duration of T12 (S1-S2). Average duration of T11 and T12 acquired in this research can possibly be used as a reference for measuring the normal duration of fetal heart sound signals.
{"title":"Model Identifkasi Sinyal Jantung Pertama (S1) dan Sinyal Jantung Kedua (S2) pada Janin","authors":"I. Puspasari, Jusak Jusak, W. Kusumawati, E. Oktarina","doi":"10.17529/jre.v16i1.14991","DOIUrl":"https://doi.org/10.17529/jre.v16i1.14991","url":null,"abstract":"Process of identifying fetal heart sound signals is imperative in recognizing congenital heart function that caused by many factors, such as hereditary factors and food intake of pregnant mothers. This study developed a method for processing heart signals to separate normal fetal phonocardiogram signals from noise by utilizing the Complete Empirical Mode Decomposition (CEEMD) algorithm which is integrated with the Pearson Distance metric. Heart signals that have been separated from noise are then processed using the Shannon Energy equation in order to sharpen the intensity of the first heart signal (S1) and the second heart signal (S2), but at the same time suppress the intensity of the residual noise in the signal. Based on the experiment results from 75 normal fetal heart sound cycles, the model that has been developed is able to identify the S1 signal and S2 signal, the time duration of T11 (S1-S1), and the time duration of T12 (S1-S2). Average duration of T11 and T12 acquired in this research can possibly be used as a reference for measuring the normal duration of fetal heart sound signals.","PeriodicalId":30766,"journal":{"name":"Jurnal Rekayasa Elektrika","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45789710","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 : 2020-01-09DOI: 10.17529/jre.v15i3.14079
Ahmad Nasrudin, Khairul Anam, M. A. Prawira N
Quadruped robot is one of the types of robots that move using legs 4 compiled by some of the servo motor as a driving force on each foot ft the DOF is used. However, problems arise when this robot is confronted on the inclined plane, because the burden is borne out every servo motor on the feet will be different, so can make a fast servo motor damaged. This research was conducted on the design of the quadruped robot system for stability on the inclined plane using the accelerometer sensor and the application of the inverse kinematics method with PID control of Ziegler-Nichols. The results of tests obtained response robots in stabilizing the body when faced with the inclined plane with some degree of slope of the pitch and roll. In this research was conducted some test for quadruped robot: static Testing robot against the angel of the pitch in the standby retrieved response average robot in stabilizing the body is 245 ms, static Testing robot against the angle of roll in standby retrieved response average robot in stabilizing the body is 280 ms, dynamic Testing robot against the roll and pitch in standby retrieved response average robot in stabilizing the body is 8 seconds, Static Testing robot to stabilizing the body against the angel of roll in running the largest robot oscillations obtained 10 degrees, dynamic Testing robot to stabilizing the body against the angle of roll in run retrieved response average robot in stabilizing the body is 490 ms.
{"title":"Evaluasi Inverse Kinematics untuk Robot Quadruped Menggunakan Sensor Accelerometer","authors":"Ahmad Nasrudin, Khairul Anam, M. A. Prawira N","doi":"10.17529/jre.v15i3.14079","DOIUrl":"https://doi.org/10.17529/jre.v15i3.14079","url":null,"abstract":"Quadruped robot is one of the types of robots that move using legs 4 compiled by some of the servo motor as a driving force on each foot ft the DOF is used. However, problems arise when this robot is confronted on the inclined plane, because the burden is borne out every servo motor on the feet will be different, so can make a fast servo motor damaged. This research was conducted on the design of the quadruped robot system for stability on the inclined plane using the accelerometer sensor and the application of the inverse kinematics method with PID control of Ziegler-Nichols. The results of tests obtained response robots in stabilizing the body when faced with the inclined plane with some degree of slope of the pitch and roll. In this research was conducted some test for quadruped robot: static Testing robot against the angel of the pitch in the standby retrieved response average robot in stabilizing the body is 245 ms, static Testing robot against the angle of roll in standby retrieved response average robot in stabilizing the body is 280 ms, dynamic Testing robot against the roll and pitch in standby retrieved response average robot in stabilizing the body is 8 seconds, Static Testing robot to stabilizing the body against the angel of roll in running the largest robot oscillations obtained 10 degrees, dynamic Testing robot to stabilizing the body against the angle of roll in run retrieved response average robot in stabilizing the body is 490 ms.","PeriodicalId":30766,"journal":{"name":"Jurnal Rekayasa Elektrika","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44355570","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 : 2020-01-09DOI: 10.17529/jre.v15i3.14793
S. Syafii, Yona Mayura, Muhardika Muhardika
Solar power plants using environmentally friendly technology in the process of harvesting energy from the sun can be a solution to the future electricity crisis so that it has been the most widely developed and reliable alternative. However, the conversion of solar energy depends on the availability and conditions of sunlight. In sunny conditions, the PV system can serve large loads while charging the battery to the maximum. While in cloudy weather conditions or at night, the PV system serves the load and without charge of the battery. The battery will discharge the stored energy until it runs out and the supply to the load will be cut off before the desired time. Therefore, research on PV system loading strategy is needed to increase the amount of electricity from solar energy and maintain the continuity of electricity supply to the load. The load power management strategy follows the conditions of sunny, cloudy, rainy or night time by considering the remaining capacity of the battery that can be used. Load installations are designed to consist of low, medium and high load installations. Simulation results show that the use of PV loading management strategies can increase the operating time of the PV system. When the remaining 15% battery capacity and PLN supply is available, the supply will be switched to PLN. The remaining 15% of PV battery capacity could be used to maintain electricity supply to a low load if the PLN supply interrupted. Thus the use of the charging strategy will increase the supply of electricity from renewable energy and improve the continuity of electricity supply.
{"title":"Strategi Pembebanan PLTS Off Grid untuk Peningkatan Kontinuitas Suplai Energi Listrik","authors":"S. Syafii, Yona Mayura, Muhardika Muhardika","doi":"10.17529/jre.v15i3.14793","DOIUrl":"https://doi.org/10.17529/jre.v15i3.14793","url":null,"abstract":"Solar power plants using environmentally friendly technology in the process of harvesting energy from the sun can be a solution to the future electricity crisis so that it has been the most widely developed and reliable alternative. However, the conversion of solar energy depends on the availability and conditions of sunlight. In sunny conditions, the PV system can serve large loads while charging the battery to the maximum. While in cloudy weather conditions or at night, the PV system serves the load and without charge of the battery. The battery will discharge the stored energy until it runs out and the supply to the load will be cut off before the desired time. Therefore, research on PV system loading strategy is needed to increase the amount of electricity from solar energy and maintain the continuity of electricity supply to the load. The load power management strategy follows the conditions of sunny, cloudy, rainy or night time by considering the remaining capacity of the battery that can be used. Load installations are designed to consist of low, medium and high load installations. Simulation results show that the use of PV loading management strategies can increase the operating time of the PV system. When the remaining 15% battery capacity and PLN supply is available, the supply will be switched to PLN. The remaining 15% of PV battery capacity could be used to maintain electricity supply to a low load if the PLN supply interrupted. Thus the use of the charging strategy will increase the supply of electricity from renewable energy and improve the continuity of electricity supply.","PeriodicalId":30766,"journal":{"name":"Jurnal Rekayasa Elektrika","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42330425","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 : 2019-09-17DOI: 10.17529/jre.v15i2.13032
M. Manfaluthy, Sinka Wilyanti
In this research, proposed lighting in smartroom with PoE technology (Power over Ethernet). IT facility is PoE Switch, Ethernet Cable and LAN network. Smartroom in this study is defined as meeting room in a high rise building that has LAN network. This research is motivated by many lighting lamps that use AC power, when the future use of AC source will be reduced, even with PoE switch voltage source still use AC, but can eliminate the pitch of light that still uses conventional AC. Building infrastructure systems tend to be developed towards IP protocols. An area where the electrical area becomes fully integrated into the IP network. This is made possible through the use of LED with low voltage and low current. However, in order to utilize the technical and economic advantages offered by LED Lighting Solutions, the addition of light sensor and motion as a switch will make it more complete. The results of the study obtained a cheaper cost than the use without PoE.
{"title":"Pemanfaatan Fasilitas IT untuk Jaringan Pencahayaan LED di Smartroom","authors":"M. Manfaluthy, Sinka Wilyanti","doi":"10.17529/jre.v15i2.13032","DOIUrl":"https://doi.org/10.17529/jre.v15i2.13032","url":null,"abstract":"In this research, proposed lighting in smartroom with PoE technology (Power over Ethernet). IT facility is PoE Switch, Ethernet Cable and LAN network. Smartroom in this study is defined as meeting room in a high rise building that has LAN network. This research is motivated by many lighting lamps that use AC power, when the future use of AC source will be reduced, even with PoE switch voltage source still use AC, but can eliminate the pitch of light that still uses conventional AC. Building infrastructure systems tend to be developed towards IP protocols. An area where the electrical area becomes fully integrated into the IP network. This is made possible through the use of LED with low voltage and low current. However, in order to utilize the technical and economic advantages offered by LED Lighting Solutions, the addition of light sensor and motion as a switch will make it more complete. The results of the study obtained a cheaper cost than the use without PoE.","PeriodicalId":30766,"journal":{"name":"Jurnal Rekayasa Elektrika","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44233390","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 : 2019-09-17DOI: 10.17529/jre.v15i2.13769
E. Susanto, Doan Perdana, A. Irawan, Rahmat Yasirandi
QR Code is the development of barcode technology that is able to store various kinds of information such as URLs, telephone numbers, SMS messages or other texts. At first, this technology was used for tracking vehicle parts in automotive industry. This study aims to develop an automatic presence system by utilizing QR Code technology, so that the presence process is more effective when compared to the presence manually since it was using digital technology. The implementation of the presence system with a QR Code was carried out at the Madrasah Aliyah Al Mukhlisin Bandung, to help solving some problems in school administration. The system was built in the form of an application installed on each teacher’s smartphone. Every student tapped their QR code image to confirm their attendance before the lesson begins. The advantage of this application was that it has an advantage on generated image of QR Code changed every user login. The results of development and testing showed that the developed system can be a solution for the presence process through the application of ICT technology with a QR Code. Testing of Quality of Service (QoS) on developed system was appropriate with ITU recommendation. Survey of users was applied to check the properness of application.
{"title":"Pengembangan Sistem Presensi Menggunakan Quick Response Code Dinamis untuk Madrasah Aliyah Al Mukhlisin Bandung","authors":"E. Susanto, Doan Perdana, A. Irawan, Rahmat Yasirandi","doi":"10.17529/jre.v15i2.13769","DOIUrl":"https://doi.org/10.17529/jre.v15i2.13769","url":null,"abstract":"QR Code is the development of barcode technology that is able to store various kinds of information such as URLs, telephone numbers, SMS messages or other texts. At first, this technology was used for tracking vehicle parts in automotive industry. This study aims to develop an automatic presence system by utilizing QR Code technology, so that the presence process is more effective when compared to the presence manually since it was using digital technology. The implementation of the presence system with a QR Code was carried out at the Madrasah Aliyah Al Mukhlisin Bandung, to help solving some problems in school administration. The system was built in the form of an application installed on each teacher’s smartphone. Every student tapped their QR code image to confirm their attendance before the lesson begins. The advantage of this application was that it has an advantage on generated image of QR Code changed every user login. The results of development and testing showed that the developed system can be a solution for the presence process through the application of ICT technology with a QR Code. Testing of Quality of Service (QoS) on developed system was appropriate with ITU recommendation. Survey of users was applied to check the properness of application.","PeriodicalId":30766,"journal":{"name":"Jurnal Rekayasa Elektrika","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42262590","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 : 2019-09-17DOI: 10.17529/jre.v15i2.13642
L. H. Pratomo
The inverter with low voltage harmonics on the output side is a very interesting topic, and widely studied. One of these solutions is a 5-levels inverter: Dual Buck DC-DC Converter - H Bridge Inverter (DBC-HBI). The inverter control methods based on digital sinusoidal pulse width modulation (DSPWM) are commonly implemented by one or a half of the wavelength algorithm (λ). However, one period could be constructed by combining four algorithms by ¼ λ. In this paper, an algorithm of DSPWM based on a ¼ λ algorithm is investigated. The aim of this research is the simplest control and capacities of memory. Finally, a verification of the proposed method was carried out by the experiment in the laboratory. Based on the laboratory tests: 1 λ algorithm has a simple algorithm, but uses large memory, whereas a ¼ λ algorithm more complicated but uses less memory.
{"title":"Metode Sederhana untuk Mengendalikan Inverter 5-Tingkat Berbasis Algoritma ¼ λ","authors":"L. H. Pratomo","doi":"10.17529/jre.v15i2.13642","DOIUrl":"https://doi.org/10.17529/jre.v15i2.13642","url":null,"abstract":"The inverter with low voltage harmonics on the output side is a very interesting topic, and widely studied. One of these solutions is a 5-levels inverter: Dual Buck DC-DC Converter - H Bridge Inverter (DBC-HBI). The inverter control methods based on digital sinusoidal pulse width modulation (DSPWM) are commonly implemented by one or a half of the wavelength algorithm (λ). However, one period could be constructed by combining four algorithms by ¼ λ. In this paper, an algorithm of DSPWM based on a ¼ λ algorithm is investigated. The aim of this research is the simplest control and capacities of memory. Finally, a verification of the proposed method was carried out by the experiment in the laboratory. Based on the laboratory tests: 1 λ algorithm has a simple algorithm, but uses large memory, whereas a ¼ λ algorithm more complicated but uses less memory.","PeriodicalId":30766,"journal":{"name":"Jurnal Rekayasa Elektrika","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41501554","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 : 2019-09-17DOI: 10.17529/jre.v15i2.13546
Saddam Azmi, Yuwaldi Away, Ira Devi Sara
The two-axis Sun tracker with the tetrahedron geometry that has been developed has an error percentage of 31.26% and a speed of 0.063 m/s. The value of the accuracy and speed is still considered low for tracking sunlight in open space conditions. The research aims to improve the accuracy and speed of the tetrahedron tracker sun. The method used to obtain tracking accuracy is to implement a control system that forms a tracking system using the proportional integral derivative (PID) control and modifies the sun's light by adding a sun tracker and laser to the top of the tetrahedron structure. In addition, the motor used to measure the state of the horizontal and vertical axes is the DC Stepper type. The results obtained indicate the level of accuracy of the modified sun tracker system is 0.650 on the X-axis and 0.540 on the Y-axis with a speed of 0.091 m / s. From these results, it can be concluded that the sun tracker modification is able to track sunlight properly with an average tracking error rate of 0.78% on the X-axis and 4.67% on the Y axis.
研制的四面体两轴太阳跟踪器的误差率为31.26%，速度为0.063 m/s。在开放空间条件下，精度和速度的价值仍然被认为是低的。该研究旨在提高四面体太阳跟踪器的精度和速度。获得跟踪精度的方法是实现一个控制系统，该控制系统采用比例积分微分(PID)控制形成跟踪系统，并通过在四面体结构的顶部增加太阳跟踪器和激光器来修改太阳光。此外，用于测量水平轴和垂直轴状态的电机是直流步进式。结果表明，改进后的太阳跟踪器系统在x轴上的精度为0.650，在Y轴上的精度为0.540，速度为0.091 m / s。从这些结果可以看出，改进后的太阳跟踪器能够正确地跟踪太阳光，x轴的平均跟踪错误率为0.78%，Y轴的平均跟踪错误率为4.67%。
{"title":"Kajian Aspek Kecepatan dan Ketepatan pada Sun Tracker Dua Sumbu Berbasis Sensor Berbentuk Tetrahedron","authors":"Saddam Azmi, Yuwaldi Away, Ira Devi Sara","doi":"10.17529/jre.v15i2.13546","DOIUrl":"https://doi.org/10.17529/jre.v15i2.13546","url":null,"abstract":"The two-axis Sun tracker with the tetrahedron geometry that has been developed has an error percentage of 31.26% and a speed of 0.063 m/s. The value of the accuracy and speed is still considered low for tracking sunlight in open space conditions. The research aims to improve the accuracy and speed of the tetrahedron tracker sun. The method used to obtain tracking accuracy is to implement a control system that forms a tracking system using the proportional integral derivative (PID) control and modifies the sun's light by adding a sun tracker and laser to the top of the tetrahedron structure. In addition, the motor used to measure the state of the horizontal and vertical axes is the DC Stepper type. The results obtained indicate the level of accuracy of the modified sun tracker system is 0.650 on the X-axis and 0.540 on the Y-axis with a speed of 0.091 m / s. From these results, it can be concluded that the sun tracker modification is able to track sunlight properly with an average tracking error rate of 0.78% on the X-axis and 4.67% on the Y axis.","PeriodicalId":30766,"journal":{"name":"Jurnal Rekayasa Elektrika","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41749082","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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