Pub Date : 2015-03-23DOI: 10.1109/TIA.2015.2416151
David C. Mazur, J. Kay, Kenneth D. Mazur
Rotating machinery assets are a fundamental necessity in the mining industry. Furthermore, the proper maintenance and ability to monitoring these key assets is important to maximizing the operations. This paper will discuss the merits and advancements in vibration monitor systems and the direct impact on SCADA and predictive maintenance models.
{"title":"Advancements in vibration monitoring for the mining industry","authors":"David C. Mazur, J. Kay, Kenneth D. Mazur","doi":"10.1109/TIA.2015.2416151","DOIUrl":"https://doi.org/10.1109/TIA.2015.2416151","url":null,"abstract":"Rotating machinery assets are a fundamental necessity in the mining industry. Furthermore, the proper maintenance and ability to monitoring these key assets is important to maximizing the operations. This paper will discuss the merits and advancements in vibration monitor systems and the direct impact on SCADA and predictive maintenance models.","PeriodicalId":446068,"journal":{"name":"2014 IEEE Industry Application Society Annual Meeting","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128896624","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 : 2014-12-08DOI: 10.1109/IAS.2014.6978343
T. Sugimoto, K. Furutachi, Y. Higashiyama
A DC ionizer specifically designed for a moving charged target is proposed. The ionizer, which is proximally positioned to the charged target, is composed of a grounded mesh electrode and an array of positive and negative needle electrodes. The positive and negative needles face each other to make a high space charge density of positive and negative ions just above the grounded mesh. The electric field formed between the grounded mesh and the charged target transports ions by field drag force. The field drag force has a faster charge elimination rate than the air drag force widely used in commercial ionizers. An evaluation method of the charge elimination for a moving target is also proposed. The method employs parameters of capacitance of the target, equivalent resistance of the ionized air, effective length of the ionizing zone and moving speed of the target. The performance of the proximally positioned ionizer and a commercial fan type ionizer were compared using the evaluation method. The proximally positioned ionizer was found to have significantly higher performance than the commercial fan type ionizer.
{"title":"An electrostatic field driven ionizer for a moving charged target","authors":"T. Sugimoto, K. Furutachi, Y. Higashiyama","doi":"10.1109/IAS.2014.6978343","DOIUrl":"https://doi.org/10.1109/IAS.2014.6978343","url":null,"abstract":"A DC ionizer specifically designed for a moving charged target is proposed. The ionizer, which is proximally positioned to the charged target, is composed of a grounded mesh electrode and an array of positive and negative needle electrodes. The positive and negative needles face each other to make a high space charge density of positive and negative ions just above the grounded mesh. The electric field formed between the grounded mesh and the charged target transports ions by field drag force. The field drag force has a faster charge elimination rate than the air drag force widely used in commercial ionizers. An evaluation method of the charge elimination for a moving target is also proposed. The method employs parameters of capacitance of the target, equivalent resistance of the ionized air, effective length of the ionizing zone and moving speed of the target. The performance of the proximally positioned ionizer and a commercial fan type ionizer were compared using the evaluation method. The proximally positioned ionizer was found to have significantly higher performance than the commercial fan type ionizer.","PeriodicalId":446068,"journal":{"name":"2014 IEEE Industry Application Society Annual Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116918203","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 : 2014-12-08DOI: 10.1109/IAS.2014.6978371
S. Mohagheghi, Neda Raji
Asset management is an integral part of every industrial plant. Here, the goal is to improve the efficiency of the system while reducing the cost of maintenance and risk of failure. Traditionally, asset management has been performed as time-based maintenance or corrective maintenance; however, in order to reduce the consequences of component failures on the operation of the overall system many plant managers have moved towards more advanced condition-based or reliability-centric maintenance techniques. Here, the asset manager would adopt a more proactive maintenance approach based on the condition of the component and its importance for the overall production plan. Although shutting down a process for maintenance purposes has long-term benefits, it may accrue costs associated with the lost revenue, inventory buildup or wasted labor. A solution is put forth in this paper that counteracts financial losses due to preventive maintenance with direct benefits gained from demand response (DR). Within this context, maintenance scheduling is coordinated with DR, which is used as a tool at the asset manger's disposal in order to offset these financial losses. A case study is presented for a sample industrial plant in order to further explain the design concepts.
{"title":"Maintenance-centric energy management of industrial plants assisted by demand response","authors":"S. Mohagheghi, Neda Raji","doi":"10.1109/IAS.2014.6978371","DOIUrl":"https://doi.org/10.1109/IAS.2014.6978371","url":null,"abstract":"Asset management is an integral part of every industrial plant. Here, the goal is to improve the efficiency of the system while reducing the cost of maintenance and risk of failure. Traditionally, asset management has been performed as time-based maintenance or corrective maintenance; however, in order to reduce the consequences of component failures on the operation of the overall system many plant managers have moved towards more advanced condition-based or reliability-centric maintenance techniques. Here, the asset manager would adopt a more proactive maintenance approach based on the condition of the component and its importance for the overall production plan. Although shutting down a process for maintenance purposes has long-term benefits, it may accrue costs associated with the lost revenue, inventory buildup or wasted labor. A solution is put forth in this paper that counteracts financial losses due to preventive maintenance with direct benefits gained from demand response (DR). Within this context, maintenance scheduling is coordinated with DR, which is used as a tool at the asset manger's disposal in order to offset these financial losses. A case study is presented for a sample industrial plant in order to further explain the design concepts.","PeriodicalId":446068,"journal":{"name":"2014 IEEE Industry Application Society Annual Meeting","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127143209","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 : 2014-12-08DOI: 10.1109/IAS.2014.6978478
G. Parise, L. Martirano, L. Parise
The terms grounding and bonding are often used interchangeably also if they are a combined protective measure, having a distinct function. The terms need to be understood separately in order to correctly apply equipment in the most beneficial manner. The paper presents the IEC approach that highlights as the two functions are generally in combination and for this reason the IEC standard adopts the common term of protective conductor for the conductors that operate the function of grounding, bonding or both the two.
{"title":"Grounding and bonding: A combined protection against electric shock","authors":"G. Parise, L. Martirano, L. Parise","doi":"10.1109/IAS.2014.6978478","DOIUrl":"https://doi.org/10.1109/IAS.2014.6978478","url":null,"abstract":"The terms grounding and bonding are often used interchangeably also if they are a combined protective measure, having a distinct function. The terms need to be understood separately in order to correctly apply equipment in the most beneficial manner. The paper presents the IEC approach that highlights as the two functions are generally in combination and for this reason the IEC standard adopts the common term of protective conductor for the conductors that operate the function of grounding, bonding or both the two.","PeriodicalId":446068,"journal":{"name":"2014 IEEE Industry Application Society Annual Meeting","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127536437","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 : 2014-12-08DOI: 10.1109/IAS.2014.6978357
N. Grass, T. Fischer
This paper will show the specific requirements of high voltage power supplies and their control technology related to small size electrostatic precipitators as they will be used in applications of biomass fired furnaces in the near future. Unlike large ESPs, which are installed in heavy industrial plants (e.g. coal fired power stations or steelworks), the small electrostatic precipitators will mainly be used on private properties or small businesses and hence, be operated by people even without any technical background. Therefore, additional requirements need to be considered in the design of the power supply and the control of such a system, that full automatic operation with continuous optimization can be achieved without operator interaction or maintenance. Available power electronic topologies e.g. soft switched, resonant, or pulsed mode will be evaluated and classified by a strength and weakness analysis. Additionally, the collection efficiency is strongly depending on the control performance of the system. Critical operating situations like heat up phases with fairly unstable combustion processes need exact adaption of voltage and current dynamics to achieve the required precipitator performance. Unlike in large electrostatic precipitator plants, flashovers must be merely avoided due to the noise and EMI, which is not acceptable in domestic environments. Fuzzy Logic was tested for the control system to process current and voltage setpoints for the power electronic internal control system. Finally, an example ESP system setup in laboratory state and measured data will show some results to be discussed.
{"title":"High voltage power supply and control technologies for electrostatic precipitators in biomass applications","authors":"N. Grass, T. Fischer","doi":"10.1109/IAS.2014.6978357","DOIUrl":"https://doi.org/10.1109/IAS.2014.6978357","url":null,"abstract":"This paper will show the specific requirements of high voltage power supplies and their control technology related to small size electrostatic precipitators as they will be used in applications of biomass fired furnaces in the near future. Unlike large ESPs, which are installed in heavy industrial plants (e.g. coal fired power stations or steelworks), the small electrostatic precipitators will mainly be used on private properties or small businesses and hence, be operated by people even without any technical background. Therefore, additional requirements need to be considered in the design of the power supply and the control of such a system, that full automatic operation with continuous optimization can be achieved without operator interaction or maintenance. Available power electronic topologies e.g. soft switched, resonant, or pulsed mode will be evaluated and classified by a strength and weakness analysis. Additionally, the collection efficiency is strongly depending on the control performance of the system. Critical operating situations like heat up phases with fairly unstable combustion processes need exact adaption of voltage and current dynamics to achieve the required precipitator performance. Unlike in large electrostatic precipitator plants, flashovers must be merely avoided due to the noise and EMI, which is not acceptable in domestic environments. Fuzzy Logic was tested for the control system to process current and voltage setpoints for the power electronic internal control system. Finally, an example ESP system setup in laboratory state and measured data will show some results to be discussed.","PeriodicalId":446068,"journal":{"name":"2014 IEEE Industry Application Society Annual Meeting","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123247915","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 : 2014-12-08DOI: 10.1109/IAS.2014.6978493
P. Sutherland
The purpose of this paper is to bring engineers up to date and give them new tools for solving harmonic problems. Variable Frequency Drive (VFD) technologies previously used only in high power applications, such as Pulse Width Modulation (PWM) Drives, Active Front Ends, and 18-pulse rectifiers have moved to lower voltage and power levels. They are now widely used in industrial and commercial power systems. The techniques used in conventional harmonic analysis for the 6-pulse SCR drive no longer apply in many cases. New harmonic limitation devices, such as broadband and active filters are replacing the conventional notch filter.
{"title":"Harmonics in electrical power systems: Effects of new technologies","authors":"P. Sutherland","doi":"10.1109/IAS.2014.6978493","DOIUrl":"https://doi.org/10.1109/IAS.2014.6978493","url":null,"abstract":"The purpose of this paper is to bring engineers up to date and give them new tools for solving harmonic problems. Variable Frequency Drive (VFD) technologies previously used only in high power applications, such as Pulse Width Modulation (PWM) Drives, Active Front Ends, and 18-pulse rectifiers have moved to lower voltage and power levels. They are now widely used in industrial and commercial power systems. The techniques used in conventional harmonic analysis for the 6-pulse SCR drive no longer apply in many cases. New harmonic limitation devices, such as broadband and active filters are replacing the conventional notch filter.","PeriodicalId":446068,"journal":{"name":"2014 IEEE Industry Application Society Annual Meeting","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116498181","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 : 2014-12-08DOI: 10.1109/IAS.2014.6978499
A. Renjit, M. Illindala, R. Yedavalli
Recent trends indicate an increased interest toward microgrids and distributed energy resources (DERs) by several industries due to the numerous technical advantages and environmental benefits. However, the planning and design of DER installations at industrial sites need a more detailed and careful investigation. This paper presents a critical examination of the stability robustness measures of a microgrid at an industrial site. It is shown that the stability robustness of the plant can deteriorate as the number of onsite DER installations increase, making the industrial power system more vulnerable to instability. The key parameters of the system that affect the stability robustness of such distribution networks are identified and their significance on system robustness is studied. Finally, it is shown that the system robustness can be improved by employing the framework of Flexible Distribution of EneRgy and Storage resources (FDERS).
{"title":"Stability robustness analysis and its improvement for an industrial microgrid","authors":"A. Renjit, M. Illindala, R. Yedavalli","doi":"10.1109/IAS.2014.6978499","DOIUrl":"https://doi.org/10.1109/IAS.2014.6978499","url":null,"abstract":"Recent trends indicate an increased interest toward microgrids and distributed energy resources (DERs) by several industries due to the numerous technical advantages and environmental benefits. However, the planning and design of DER installations at industrial sites need a more detailed and careful investigation. This paper presents a critical examination of the stability robustness measures of a microgrid at an industrial site. It is shown that the stability robustness of the plant can deteriorate as the number of onsite DER installations increase, making the industrial power system more vulnerable to instability. The key parameters of the system that affect the stability robustness of such distribution networks are identified and their significance on system robustness is studied. Finally, it is shown that the system robustness can be improved by employing the framework of Flexible Distribution of EneRgy and Storage resources (FDERS).","PeriodicalId":446068,"journal":{"name":"2014 IEEE Industry Application Society Annual Meeting","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121970826","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 : 2014-12-08DOI: 10.1109/IAS.2014.6978347
M. Mazumder, M. Horenstein, J. Stark, John N. Hudelson, A. Sayyah, C. Heiling, J. Yellowhair
Concentrating Solar Power (CSP) systems based on parabolic trough and power tower technologies provide inherent advantage of energy storage and high efficiency for utility-scale solar plants. The specular reflectance efficiency of the solar mirrors plays a critical role in the efficiency of electric power generation. The deposition of atmospheric dust on the surface of the mirrors reduces its reflectance efficiency and requires frequent cleaning to avoid energy-yield loss. Electrodynamic screen (EDS) can provide an efficient method for maintaining the specular reflectivity above 90% by removing the deposited dust particles. In this paper, we briefly review (1) electrostatic charging mechanisms involved in EDS, (2) optimization of EDS for high dust removal efficiency, and (3) minimization of cleaning cost and water consumption. Prototype EDS-integrated solar mirrors were produced and tested in an environmental test chambers simulating desert atmospheres. The test results show that frequent removal of dust layer can maintain the specular reflectivity of the mirrors above 90% subjected to dust deposition ranging from 0 to 10 g/m2.
{"title":"Electrodynamic removal of dust from solar mirrors and its applications in concentrated solar power (CSP) plants","authors":"M. Mazumder, M. Horenstein, J. Stark, John N. Hudelson, A. Sayyah, C. Heiling, J. Yellowhair","doi":"10.1109/IAS.2014.6978347","DOIUrl":"https://doi.org/10.1109/IAS.2014.6978347","url":null,"abstract":"Concentrating Solar Power (CSP) systems based on parabolic trough and power tower technologies provide inherent advantage of energy storage and high efficiency for utility-scale solar plants. The specular reflectance efficiency of the solar mirrors plays a critical role in the efficiency of electric power generation. The deposition of atmospheric dust on the surface of the mirrors reduces its reflectance efficiency and requires frequent cleaning to avoid energy-yield loss. Electrodynamic screen (EDS) can provide an efficient method for maintaining the specular reflectivity above 90% by removing the deposited dust particles. In this paper, we briefly review (1) electrostatic charging mechanisms involved in EDS, (2) optimization of EDS for high dust removal efficiency, and (3) minimization of cleaning cost and water consumption. Prototype EDS-integrated solar mirrors were produced and tested in an environmental test chambers simulating desert atmospheres. The test results show that frequent removal of dust layer can maintain the specular reflectivity of the mirrors above 90% subjected to dust deposition ranging from 0 to 10 g/m2.","PeriodicalId":446068,"journal":{"name":"2014 IEEE Industry Application Society Annual Meeting","volume":"520 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132022676","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 : 2014-12-08DOI: 10.1109/IAS.2014.6978457
Lincan Yan, J. Waynert, C. Sunderman, N. Damiano
The through-the-earth (TTE) wireless communication system, in which the RF signal can directly penetrate the earth separating a transmitter and receiver, is likely to survive a mine disaster because it requires no cabling between the surface and underground. One of the biggest challenges for TTE communication is that the ambient electromagnetic (EM) noise can be significant and impose a limitation on the reception sensitivity. Both underground and surface RF noise characteristics were obtained and analyzed from experimental data collected at several coal mines. The results show the surface has a higher noise level than underground. Moreover, the parameters obtained in an empirical noise model can be used to predict a TTE system's performance at a specific mine site.
{"title":"Statistical analysis and modeling of VLF/ELF noise in coal mines for through-the-earth wireless communications","authors":"Lincan Yan, J. Waynert, C. Sunderman, N. Damiano","doi":"10.1109/IAS.2014.6978457","DOIUrl":"https://doi.org/10.1109/IAS.2014.6978457","url":null,"abstract":"The through-the-earth (TTE) wireless communication system, in which the RF signal can directly penetrate the earth separating a transmitter and receiver, is likely to survive a mine disaster because it requires no cabling between the surface and underground. One of the biggest challenges for TTE communication is that the ambient electromagnetic (EM) noise can be significant and impose a limitation on the reception sensitivity. Both underground and surface RF noise characteristics were obtained and analyzed from experimental data collected at several coal mines. The results show the surface has a higher noise level than underground. Moreover, the parameters obtained in an empirical noise model can be used to predict a TTE system's performance at a specific mine site.","PeriodicalId":446068,"journal":{"name":"2014 IEEE Industry Application Society Annual Meeting","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132318656","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 : 2014-12-08DOI: 10.1109/IAS.2014.6978437
H. Unno, Y. Takashima, K. Uehira
This paper describes design considerations for acquiring improved performance on a new type of display system for regenerating three-dimensional images with an invisible high-frequency code pattern whose attribute depends on the depth of object. Three-dimensional images to be demonstrated on the new 3D image display system will be generated in the following 3 steps: That is; firstly embedding data of depth information into a 2D object image while taking it with a camera, secondly estimating true value of depth information embedded, and thirdly eliminating invisible pattern from an object image taken or diminishing contrast ratio depending on an estimated value of image depth. Here, we have to note that the diminished contrast implies reduced readability on an object image. With these three steps, improved compatibility with invisibility and readability on an invisible pattern was set up at optimum with an allowable margin.
{"title":"Design considerations for new 3D image display system with improved compatibility with invisibility and readability","authors":"H. Unno, Y. Takashima, K. Uehira","doi":"10.1109/IAS.2014.6978437","DOIUrl":"https://doi.org/10.1109/IAS.2014.6978437","url":null,"abstract":"This paper describes design considerations for acquiring improved performance on a new type of display system for regenerating three-dimensional images with an invisible high-frequency code pattern whose attribute depends on the depth of object. Three-dimensional images to be demonstrated on the new 3D image display system will be generated in the following 3 steps: That is; firstly embedding data of depth information into a 2D object image while taking it with a camera, secondly estimating true value of depth information embedded, and thirdly eliminating invisible pattern from an object image taken or diminishing contrast ratio depending on an estimated value of image depth. Here, we have to note that the diminished contrast implies reduced readability on an object image. With these three steps, improved compatibility with invisibility and readability on an invisible pattern was set up at optimum with an allowable margin.","PeriodicalId":446068,"journal":{"name":"2014 IEEE Industry Application Society Annual Meeting","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133189686","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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