Pub Date : 2023-01-01DOI: 10.20508/ijrer.v13i2.13956.g8731
A. Khalid, M. A. El-Hamid, A. Mostafa, E. Elgendy
- - The present investigation aims to analyze and compare the performance of a photovoltaic-powered submersible pump under three various climatic conditions in Egypt. The pump is employed to irrigate wheat and maize crops in a one-feddan farm by adopting the actual well depth and crop water requirement in the proposed locations. Furthermore, the total power of solar modules required to operate this pump is computed to reveal the auxiliary power needed for these crops at the proposed locations during their irrigation season. At the introduced weather conditions, an economic analysis is conducted to examine the feasibility of the solar powered pump versus that operated by traditional diesel generator. The results reveal that the net generated power via the PV panels to operate a pump used to irrigate wheat crop is 325, 495 and 17 kW and for maize crop is 1786, 1767 and 266 kW in Aswan, Alexandria and Giza cities, respectively. In Alexandria, Giza, and Aswan cities, utilizing solar PV panels as a power source for the pump used to irrigate wheat crop has proven its economic feasibility as it is expected to dramatically reduce the total cost by around 49, 46, and 76%, respectively and for maize crop cost is reduced by 47, 48 and 66% in the same locations compared to diesel generators.
{"title":"Economic Analysis of a Solar Operated Irrigation Pump for Different Crops under Egyptian Climatic Conditions","authors":"A. Khalid, M. A. El-Hamid, A. Mostafa, E. Elgendy","doi":"10.20508/ijrer.v13i2.13956.g8731","DOIUrl":"https://doi.org/10.20508/ijrer.v13i2.13956.g8731","url":null,"abstract":"- - The present investigation aims to analyze and compare the performance of a photovoltaic-powered submersible pump under three various climatic conditions in Egypt. The pump is employed to irrigate wheat and maize crops in a one-feddan farm by adopting the actual well depth and crop water requirement in the proposed locations. Furthermore, the total power of solar modules required to operate this pump is computed to reveal the auxiliary power needed for these crops at the proposed locations during their irrigation season. At the introduced weather conditions, an economic analysis is conducted to examine the feasibility of the solar powered pump versus that operated by traditional diesel generator. The results reveal that the net generated power via the PV panels to operate a pump used to irrigate wheat crop is 325, 495 and 17 kW and for maize crop is 1786, 1767 and 266 kW in Aswan, Alexandria and Giza cities, respectively. In Alexandria, Giza, and Aswan cities, utilizing solar PV panels as a power source for the pump used to irrigate wheat crop has proven its economic feasibility as it is expected to dramatically reduce the total cost by around 49, 46, and 76%, respectively and for maize crop cost is reduced by 47, 48 and 66% in the same locations compared to diesel generators.","PeriodicalId":14385,"journal":{"name":"International Journal of Renewable Energy Research","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67638815","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 : 2023-01-01DOI: 10.20508/ijrer.v13i3.14071.g8794
Rooftop solar power projects in Vietnam are increasingly popular and have certain impacts on the distribution power grid. Thus, solar panel systems are designed and built with many scales and features that are increasingly flexible, easy to install as well as in use. Moreover, the management and operation of distribution power grids with solar power stations also need to be improved so that local power companies can monitor the operation current status of the system. In this study, an Internet of Things (IoT) - based Supervisory control and data acquisition (SCADA) system is proposed to serve the management and supervision of the operation of rooftop solar power stations on the typical distribution grid of Ha Tinh Power Company, Vietnam. The test research results show that the SCADA – IoT system operates stably, data is sent to the server fully and there are no signs of loss, except in cases of WiFi signal loss or unstable 4G network signal due to the provider. Therefore, Ha Tinh Power Company can control the operation of all rooftop solar power systems and make appropriate distribution grid operation strategies.
{"title":"Study on IoT based SCADA system for rooftop solar power systems in Vietnam","authors":"","doi":"10.20508/ijrer.v13i3.14071.g8794","DOIUrl":"https://doi.org/10.20508/ijrer.v13i3.14071.g8794","url":null,"abstract":"Rooftop solar power projects in Vietnam are increasingly popular and have certain impacts on the distribution power grid. Thus, solar panel systems are designed and built with many scales and features that are increasingly flexible, easy to install as well as in use. Moreover, the management and operation of distribution power grids with solar power stations also need to be improved so that local power companies can monitor the operation current status of the system. In this study, an Internet of Things (IoT) - based Supervisory control and data acquisition (SCADA) system is proposed to serve the management and supervision of the operation of rooftop solar power stations on the typical distribution grid of Ha Tinh Power Company, Vietnam. The test research results show that the SCADA – IoT system operates stably, data is sent to the server fully and there are no signs of loss, except in cases of WiFi signal loss or unstable 4G network signal due to the provider. Therefore, Ha Tinh Power Company can control the operation of all rooftop solar power systems and make appropriate distribution grid operation strategies.","PeriodicalId":14385,"journal":{"name":"International Journal of Renewable Energy Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135213752","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 : 2023-01-01DOI: 10.20508/ijrer.v13i3.14127.g8788
{"title":"Modelling and Real-time Validation of a Two–input High–gain DC–DC Converter with a Reduced Number of Switches","authors":"","doi":"10.20508/ijrer.v13i3.14127.g8788","DOIUrl":"https://doi.org/10.20508/ijrer.v13i3.14127.g8788","url":null,"abstract":"","PeriodicalId":14385,"journal":{"name":"International Journal of Renewable Energy Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135213984","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 : 2023-01-01DOI: 10.20508/ijrer.v13i3.13679.g8778
This research aims to design a hybrid solar-wind-diesel- storage battery sustainable energy system for Jazirat Al Halaniyat (Island) in the Sultanate of Oman. Techno economic assessment and analysis were done by using the HomerPro software. Many factors were considered such as the weather conditions, availability of different renewable energy resources, life security, and economic factors. The weather conditions were found having limited impacts on the overall performance of the proposed system because of the successful technical integration of the wind and solar weather conditions during the summer period. Using the real load data for 2019 and 2020, at a peak load of 500 kW and an annual load demand of 2350 MWh, different hybrid generation solar, wind, diesel generator and storage battery configurations were examined for the best optimum sizing, minimum cost, and most stable system for 25 years period. The techno economic analysis results proved that the proposed system could run with a 1004 kW PV solar system, 160 kW wind turbine with a contribution of 580 diesel electricity generator and storage of 1478 kWh yearly. The proposed system is expected to produce an annual electricity production of 3,548 MWh/year, of which around 56.6% (2,007 MWh/year) will produced by the solar PV panels at LCOE of $0.234 per kWh.
这项研究旨在为阿曼苏丹国的Jazirat Al Halaniyat(岛)设计一个混合太阳能-风能-柴油-储能电池可持续能源系统。采用HomerPro软件进行技术经济评价和分析。考虑了许多因素，如天气条件、不同可再生能源的可用性、生命安全和经济因素。由于在夏季期间成功地将风和太阳天气条件进行了技术整合，因此发现天气条件对拟议系统的整体性能影响有限。利用2019年和2020年的实际负荷数据，在峰值负荷为500kw，年负荷需求为2350mwh的情况下，研究了不同的混合发电太阳能、风能、柴油发电机和蓄电池配置，以获得25年最优规模、最低成本和最稳定的系统。技术经济分析结果表明，该系统可与1004 kW的光伏太阳能系统、160 kW的风力发电机组和580台柴油发电机组配合运行，年储能1478千瓦时。拟议的系统预计年发电量为3,548兆瓦时/年，其中约56.6%(2007兆瓦时/年)将由太阳能光伏板以每千瓦时0.234美元的LCOE产生。
{"title":"Techno economic design and analysis of a hybrid renewable Energy system for Jazirat Al Halaniyat in Oman","authors":"","doi":"10.20508/ijrer.v13i3.13679.g8778","DOIUrl":"https://doi.org/10.20508/ijrer.v13i3.13679.g8778","url":null,"abstract":"This research aims to design a hybrid solar-wind-diesel- storage battery sustainable energy system for Jazirat Al Halaniyat (Island) in the Sultanate of Oman. Techno economic assessment and analysis were done by using the HomerPro software. Many factors were considered such as the weather conditions, availability of different renewable energy resources, life security, and economic factors. The weather conditions were found having limited impacts on the overall performance of the proposed system because of the successful technical integration of the wind and solar weather conditions during the summer period. Using the real load data for 2019 and 2020, at a peak load of 500 kW and an annual load demand of 2350 MWh, different hybrid generation solar, wind, diesel generator and storage battery configurations were examined for the best optimum sizing, minimum cost, and most stable system for 25 years period. The techno economic analysis results proved that the proposed system could run with a 1004 kW PV solar system, 160 kW wind turbine with a contribution of 580 diesel electricity generator and storage of 1478 kWh yearly. The proposed system is expected to produce an annual electricity production of 3,548 MWh/year, of which around 56.6% (2,007 MWh/year) will produced by the solar PV panels at LCOE of $0.234 per kWh.","PeriodicalId":14385,"journal":{"name":"International Journal of Renewable Energy Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135214197","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 : 2023-01-01DOI: 10.20508/ijrer.v13i3.14136.g8814
Photovoltaic thermal double pass solar air heater (PVT-DPSAH) with PCM capsules in the bottom channel is a promising design for enhancing the system performance. The PVT-DPSAH comprises a glass cover, absorber plate (PV), PCM capsules, and back plate. The current study uses COMSOL Multiphysics software to perform a computational fluid dynamics (CFD) analysis of a novel PVT-DPSAH with vertical cylindrical PCM capsules in the second channel. To solve the differential equations in the 3D computational domain, the finite element method (FEM) is employed. This study uses the high Reynolds (Re) number and ?-? turbulent flow model with enhanced wall functions. The impact of varying solar irradiance levels (500- 800 W/m2) on the performance of PVT-DPSAH, with mass flow rates ranging from 0.011 kg/s to 0.065 kg/s, is investigated. The optimum mass flow rate (?) was found to be 0.037 kg/s at solar irradiances ranging from 500 W/m2 to 800 W/m2, with average thermal efficiencies, electrical efficiencies, and fluid output temperatures of 60.7% to 63.4%, 11.25% to 11.02% and 42.96 oC to 49.54 oC, respectively. PVT collector's maximum combined efficiency was 84.12% at solar irradiance of 800 W/m2 with the ? of 0.065 kg/s. This study identified RT-47 paraffin-wax-PCM as the best option for the PVT-DPSAH based on the PCM's thermal distribution and melting temperature.
{"title":"Performance Analysis of a Novel Photovoltaic Thermal PVT Double Pass Solar Air Heater with Cylindrical PCM Capsules using CFD","authors":"","doi":"10.20508/ijrer.v13i3.14136.g8814","DOIUrl":"https://doi.org/10.20508/ijrer.v13i3.14136.g8814","url":null,"abstract":"Photovoltaic thermal double pass solar air heater (PVT-DPSAH) with PCM capsules in the bottom channel is a promising design for enhancing the system performance. The PVT-DPSAH comprises a glass cover, absorber plate (PV), PCM capsules, and back plate. The current study uses COMSOL Multiphysics software to perform a computational fluid dynamics (CFD) analysis of a novel PVT-DPSAH with vertical cylindrical PCM capsules in the second channel. To solve the differential equations in the 3D computational domain, the finite element method (FEM) is employed. This study uses the high Reynolds (Re) number and ?-? turbulent flow model with enhanced wall functions. The impact of varying solar irradiance levels (500- 800 W/m2) on the performance of PVT-DPSAH, with mass flow rates ranging from 0.011 kg/s to 0.065 kg/s, is investigated. The optimum mass flow rate (?) was found to be 0.037 kg/s at solar irradiances ranging from 500 W/m2 to 800 W/m2, with average thermal efficiencies, electrical efficiencies, and fluid output temperatures of 60.7% to 63.4%, 11.25% to 11.02% and 42.96 oC to 49.54 oC, respectively. PVT collector's maximum combined efficiency was 84.12% at solar irradiance of 800 W/m2 with the ? of 0.065 kg/s. This study identified RT-47 paraffin-wax-PCM as the best option for the PVT-DPSAH based on the PCM's thermal distribution and melting temperature.","PeriodicalId":14385,"journal":{"name":"International Journal of Renewable Energy Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135214206","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 : 2023-01-01DOI: 10.20508/ijrer.v13i3.14042.g8792
Universities encounter challenges stemming from the escalating electrical bills attributed to the substantial energy consumption of their expansive buildings. This serves as a clear impetus for universities to transition to renewable energy technologies, which offer the advantages of cost-effective operation and minimal environmental footprint. This paper presents the design of a grid-connected photovoltaic (PV) system with battery storage to fulfil the electricity consumption needs of Universiti Teknikal Malaysia Melaka (UTeM) main campus. The objective is to reduce grid dependency, lower electricity costs, and minimize carbon dioxide (CO 2 ) emissions. The system was modelled and simulated using DIgSILENT software. Load demand and energy consumption data were extracted from the Tenaga Nasional Berhad (TNB) electricity bill, while the PV profile and irradiance data were obtained from the UTeM solar laboratory. Based on the findings, it has been determined that a 12 MWp PV system, coupled with a 25.8 MWh battery, represents the optimal solution for satisfying the total electricity demand of UTeM's main campus. The installation of this system is projected to result in estimated monthly electricity bill savings of MYR 422,611 for UTeM. Furthermore, the proposed system offers a significant environmental benefit by potentially reducing CO 2 emissions by up to 1,507,520 kg per month. The findings of this study can inform decision-makers in implementing a cost-effective and environmentally friendly energy solution for UTeM's main campus.
{"title":"Modelling and Sizing a Grid-connected PV-Battery System Using DIgSILENT for Powering UTeM Main Campus","authors":"","doi":"10.20508/ijrer.v13i3.14042.g8792","DOIUrl":"https://doi.org/10.20508/ijrer.v13i3.14042.g8792","url":null,"abstract":"Universities encounter challenges stemming from the escalating electrical bills attributed to the substantial energy consumption of their expansive buildings. This serves as a clear impetus for universities to transition to renewable energy technologies, which offer the advantages of cost-effective operation and minimal environmental footprint. This paper presents the design of a grid-connected photovoltaic (PV) system with battery storage to fulfil the electricity consumption needs of Universiti Teknikal Malaysia Melaka (UTeM) main campus. The objective is to reduce grid dependency, lower electricity costs, and minimize carbon dioxide (CO 2 ) emissions. The system was modelled and simulated using DIgSILENT software. Load demand and energy consumption data were extracted from the Tenaga Nasional Berhad (TNB) electricity bill, while the PV profile and irradiance data were obtained from the UTeM solar laboratory. Based on the findings, it has been determined that a 12 MWp PV system, coupled with a 25.8 MWh battery, represents the optimal solution for satisfying the total electricity demand of UTeM's main campus. The installation of this system is projected to result in estimated monthly electricity bill savings of MYR 422,611 for UTeM. Furthermore, the proposed system offers a significant environmental benefit by potentially reducing CO 2 emissions by up to 1,507,520 kg per month. The findings of this study can inform decision-makers in implementing a cost-effective and environmentally friendly energy solution for UTeM's main campus.","PeriodicalId":14385,"journal":{"name":"International Journal of Renewable Energy Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135214216","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 : 2023-01-01DOI: 10.20508/ijrer.v13i3.14003.g8781
In most developing nations, such as Indonesia, t he combustion of crop leftovers worsens the emissions generated by coal-based thermal power plants. Agricultural residue, which consists primarily of organic components, can be exploited effectively and sustainably to generate biogas by digesting anaerobically. This paper proposes a microgrid (MG) system for dependable electricity in rural areas and effective utilization of existing renewable resources. A complete techno-economic analysis was conducted on constructing an MG system based on solar and biomass energy. Two MG systems delivered reliable rural electrification , MG-I with solar (PV) and MG-I with its isolated PV system, and MG-II with its biomass-based generating units, unstable grid, biomass, and batteries. The investigation includes several performance evaluation criteria: component costs, inflation rate, project viability, generation responses, emissions, and fuel prices. This research shows that grid-connected MG systems can provide more reliable electricity at lower prices than island-based MG systems. In addition, w ith the efficient use of plentiful biomass resources, the proposed MG power system lowers atmospheric pollution.
{"title":"Designing and Analyzing a Hybrid Photovoltaic-Biomass Microgrid for Rural Communities","authors":"","doi":"10.20508/ijrer.v13i3.14003.g8781","DOIUrl":"https://doi.org/10.20508/ijrer.v13i3.14003.g8781","url":null,"abstract":"In most developing nations, such as Indonesia, t he combustion of crop leftovers worsens the emissions generated by coal-based thermal power plants. Agricultural residue, which consists primarily of organic components, can be exploited effectively and sustainably to generate biogas by digesting anaerobically. This paper proposes a microgrid (MG) system for dependable electricity in rural areas and effective utilization of existing renewable resources. A complete techno-economic analysis was conducted on constructing an MG system based on solar and biomass energy. Two MG systems delivered reliable rural electrification , MG-I with solar (PV) and MG-I with its isolated PV system, and MG-II with its biomass-based generating units, unstable grid, biomass, and batteries. The investigation includes several performance evaluation criteria: component costs, inflation rate, project viability, generation responses, emissions, and fuel prices. This research shows that grid-connected MG systems can provide more reliable electricity at lower prices than island-based MG systems. In addition, w ith the efficient use of plentiful biomass resources, the proposed MG power system lowers atmospheric pollution.","PeriodicalId":14385,"journal":{"name":"International Journal of Renewable Energy Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135214492","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 : 2023-01-01DOI: 10.20508/ijrer.v13i1.13486.g8686
{"title":"Experimentation and Performance Parametric Optimization of Soybean-Based Biodiesel Fired Variable Compression Ratio CI Engine Using Taguchi Method","authors":"","doi":"10.20508/ijrer.v13i1.13486.g8686","DOIUrl":"https://doi.org/10.20508/ijrer.v13i1.13486.g8686","url":null,"abstract":"","PeriodicalId":14385,"journal":{"name":"International Journal of Renewable Energy Research","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67637607","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 : 2023-01-01DOI: 10.20508/ijrer.v13i1.13554.g8688
{"title":"Proton Exchange Membrane Fuel Cell (PEMFC) Using Membrane Electrode Assembly (MEA) Based on PT/C Catalyst with Activated Carbon-Chitosan-Nickel","authors":"","doi":"10.20508/ijrer.v13i1.13554.g8688","DOIUrl":"https://doi.org/10.20508/ijrer.v13i1.13554.g8688","url":null,"abstract":"","PeriodicalId":14385,"journal":{"name":"International Journal of Renewable Energy Research","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67637659","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 : 2023-01-01DOI: 10.20508/ijrer.v13i1.13662.g8708
{"title":"Power Quality Enhancement of Hybrid PV-wind system using D-STATCOM","authors":"","doi":"10.20508/ijrer.v13i1.13662.g8708","DOIUrl":"https://doi.org/10.20508/ijrer.v13i1.13662.g8708","url":null,"abstract":"","PeriodicalId":14385,"journal":{"name":"International Journal of Renewable Energy Research","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67638058","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：