Energy Conversion and Management最新文献

{"title":"Microalgae cultivation in semi-transparent photovoltaic bioreactor for sustainable power generation, wastewater treatment and biodiesel production","authors":"Negar Gol, Mohsen Taghavijeloudar, Neda Jalilian, Shahabaldin Rezania","doi":"10.1016/j.enconman.2024.119417","DOIUrl":"https://doi.org/10.1016/j.enconman.2024.119417","url":null,"abstract":"Sustainable energy harvesting from renewable resources such as sunlight and microalgal biomass has received great attention due to the depletion of conventional energy sources and the increasing demand for clean energy. In this research, a novel approach for simultaneous electric power generation and biofuel production was developed by microalgae cultivation in semi-transparent photovoltaic bioreactor which has the potential to be applied as a building facade. According to the results, the maximum biomass concentration of <ce:italic>Chlorella sorokiniana</ce:italic> and <ce:italic>Chlorella vulgaris</ce:italic> increased from 2.5 to 2.9 g/L (15 %) and from 2.7 to 3.2 g/L (18 %) by using semi-transparent photovoltaic instead of glass in a photobioreactor, respectively. The wastewater treatment ability and high-value production (i.e., lipid, lutein and chlorophyll <ce:italic>a</ce:italic> and b) of the green microalgae were also improved by microalgae cultivation in the semi-transparent photovoltaic-photobioreactor. This was attributed to the better light quality and temperature of the medium in the semi-transparent photovoltaic- photobioreactor. More than 37 kWh/m<ce:sup loc=\"post\">2</ce:sup> of electrical energy was generated from the semi-transparent photovoltaic-photobioreactor during microalgae cultivation which was enough to provide the electric power required for light operation. The scale-up analysis suggested the proposed approach as a promising technique for biological wastewater treatment and renewable energy generation from solar irradiation and microalgae biomass.","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"64 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142888283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A thermodynamic study and numerical analysis of Ericsson, Brayton, and Carnot cycles for the thermally regenerative electrochemical refrigerator","authors":"Shen Fu, Xin Tang, Mirza Abdullah Rehan, Guiqiang Li","doi":"10.1016/j.enconman.2024.119422","DOIUrl":"https://doi.org/10.1016/j.enconman.2024.119422","url":null,"abstract":"Non-vapor-strand refrigeration, the zero-global-warming-potential cooling technologies, has garnered attraction in response to the ever-increasingly severe environmental issues. The thermally regenerative electrochemical refrigerator (TRER) is one of the promising candidates because of its superior performance theoretically. However, few thermodynamic cycles associated with electrochemical reactions have been developed to analyze this emerging work-to-heat technology. This study intends to fill this gap by investigating three typical thermodynamic cycles, i.e., Ericsson, Brayton, and Carnot cycles, based on the characteristics of thermodynamics and electrochemistry. The corresponding analytic models are derived and the core parameters are studied. The results reveal that the temperature coefficient has a huge and different impact on different cycles, that is, positive, negative, and negligible correlations to the coefficient of performance (COP) of the Carnot, Brayton, and Ericsson cycles, respectively. The specific heat capacity of the TRER would degrade the COP in Ericsson and Carnot cycles, while the curve of Brayton cycle shows a convex trend. The electrochemical refrigeration will not be workable if the internal resistance is more than a certain value. Furthermore, the performance of CECR can be improved by shortening the duration of its isentropic forward electrochemical phase. This study will provide useful insights into the selection and optimization of various thermodynamic cycles for TRER.","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"163 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carnot battery energy storage system integrated with liquid hydrogen cold energy: Thermodynamics, economic analysis and optimization","authors":"Huilin Zhang, Jianfeng Tang, Meng Qi, Tianbiao He","doi":"10.1016/j.enconman.2024.119400","DOIUrl":"https://doi.org/10.1016/j.enconman.2024.119400","url":null,"abstract":"Carnot battery systems provide a high-energy–density storage solution that is not geographically constrained, converting and storing electricity in thermal form. However, the integration of Carnot batteries with cryogenic energy storage, specifically the utilization of liquid hydrogen cold energy, is an underexplored area. A pioneering design is presented in this study where a Carnot battery system is integrated with a liquid hydrogen cold energy utilization system. Additionally, it captures the waste heat from fuel cells to achieve combined generation of cold, heat, and power. The study includes steady-state modeling, sensitivity analysis of key components, and optimization using a particle swarm optimization algorithm aimed at maximizing power-to-power efficiency. The optimized system achieves a power-to-power conversion efficiency of 1.59, an energy efficiency of 1.02, an exergy efficiency of 0.18, and an Levelized Cost of Storage of 0.1516 USD/kWh. These findings represent a significant advance in energy storage technology, offering a new direction for integrating liquid hydrogen cold energy in energy storage systems and peak power applications.","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"1 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energy, exergy, economic and environmental analysis and optimization of an adiabatic-isothermal compressed air energy storage coupled with methanol decomposition reaction for combined heat, power and hydrogen generation system","authors":"Yufei Zhang, Haiyang Wang, Peiye Zhang, Ruixiong Li, Xuchao Cai, Wenlong Zhang, Huanran Wang","doi":"10.1016/j.enconman.2024.119401","DOIUrl":"https://doi.org/10.1016/j.enconman.2024.119401","url":null,"abstract":"Compressed air energy storage technology is one of the key technologies for integrating renewable energy generation into the grid. Efficient utilization of compression heat is an important means to enhance the performance of compressed air energy storage systems. Therefore, this paper proposes an adiabatic-isothermal compressed air energy storage coupled with methanol decomposition reaction for combined heat, power and hydrogen generation system. During energy storage, the first stage employs adiabatic compression, where the generated compression heat provides a heat source for methanol decomposition reaction. The produced hydrogen and carbon monoxide are separated, with hydrogen stored in hydrogen refueling stations and carbon monoxide in gas storage tanks for future use. The second stage uses isothermal compression to reduce the generation of compression heat. During energy release, the carbon monoxide produced from the decomposition reaction combusts to reheat the air. This system reduces the generation of compression heat while fully utilizing the compression heat, improving system performance through the principle of energy cascading and incorporating hydrogen production functionality. By developing mathematical models for each component of the proposed system, the variations in the system’s 4E (Energy, Exergy, Economic, Environmental) performances with key parameter changes are investigated. The results show that under design conditions, the proposed system achieves a round-trip efficiency of 87.04 %, an exergy efficiency of 74.05 %, an investment payback period of 7.75 years, a levelized cost of energy of 137.28 $/MWh, and a carbon dioxide emission index of 155.93 kg/MWh. Notably, the exergy losses in the combustion chamber and the methanol decomposition reactor are significant, accounting for 27.58 % and 18.06 % of the total exergy losses, respectively. The results of sensitivity analysis indicate that air-to-methanol ratio, liquid piston cycle duration, compressor pressure ratio and efficiency are the key parameters affecting the performance of the system. The simultaneous optimization of a system’s thermal, economic, and environmental performance is not achievable. Therefore, in this paper, the system is optimised at six different liquid piston cycle durations. When the liquid piston cycle duration is 1200 s, the optimal operating point exergy efficiency, levelized cost of energy and carbon dioxide emission index of the system are 73.04 %, 135.74 $/MWh and 150.20 kg/MWh, respectively. These findings provide valuable insights for the engineering application of the proposed system.","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"125 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The influence of applying turbine inlet air cooling to a small-scale parallel-flow Brayton cycle","authors":"C.C. Cockcroft, W.G. Le Roux","doi":"10.1016/j.enconman.2024.119407","DOIUrl":"https://doi.org/10.1016/j.enconman.2024.119407","url":null,"abstract":"To improve an open air-operated parallel-flow Brayton cycle, the air entering the compressor inlet can be cooled via the concept of turbine inlet air cooling (TIAC). This work investigates whether TIAC forms a worthwhile improvement to the power output and thermal efficiency of a parallel-flow Brayton cycle. An analytical approach is followed to compare the results between a low-temperature turbine (LTT) setup and a similar setup with an added cooling loop for the TIAC concept, considering different crossflow condenser dimensions. A range of commercial turbochargers are used to model the compressor and turbines and the best turbocharger combinations are considered for further analysis. Considering the same pressure ratio, the TIAC cycle does not offer better power output nor thermal efficiency than the LTT cycle, however, it is able to lower the required gasifier turbine inlet temperature (which may not exceed 1200 K due to turbomachinery manufacturer limits). When comparing the LTT and TIAC cycles at their optimum operating points, which shifts to a higher compressor pressure ratio for the TIAC cycle due to a larger TIAC compatibility range, the TIAC layout obtains 64.9 % more power output and a 31.4 % improvement in thermal efficiency for the combination between the G25-550 (AR = 0.92) main shaft turbocharger and the GBC14-200 power turbine. It is recommended to investigate recuperated and solar cycle configurations for further cycle thermal efficiency improvements.","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"283 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and experimental testing of a novel skip-cycle mechanism for Wankel engine","authors":"O.A. Kutlar, M. Üngör, Ö. Cihan","doi":"10.1016/j.enconman.2024.119410","DOIUrl":"https://doi.org/10.1016/j.enconman.2024.119410","url":null,"abstract":"In this study a new skip-cycle mechanism which will be applied to the Wankel engine have been designed, analyzed and tested. With skip-cycle method application, after the four periods of power generation are completed, no more work is produced in the following cycle. To achieve this, the fuel and ignition are cut off during the cycle when power is not generated. Additionally, in this cycle the intake port is also closed. The aim of this application is to change the effective stroke volume of the engine according to load conditions thus reducing the pumping loss and increasing efficiency. Alternative mechanisms have been designed, analyzed and one of them with minimal modification is tested on the single rotor Mazda 13B test engine. In the designed system of skip-cycle, it has been intended to stop the intake operation with the aid of a rotary valve placed in the intake port thus providing cycle control. A correlation between the moving parts on the engine has been developed with the inclusion of the valve into the mechanism. Valve window angle, valve orientation and valve window geometry parameters were evaluated. The skip-cycle mechanism was installed in the test engine and measured data of the skip-cycle and normal cycle were compared. The result show that the Wankel engine with skip-cycle mechanism runs at low load conditions with higher pressure during combustion period and lower vacuum pressure at intake period compared at equal power generation at normal cycle conditions.","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"122 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving energy consumption in plasma reforming of methane through gliding arc","authors":"Haochuan He, Changhua Wang, He Ma, Hancheng Zhu, Xintong Zhang","doi":"10.1016/j.enconman.2024.119413","DOIUrl":"https://doi.org/10.1016/j.enconman.2024.119413","url":null,"abstract":"As the demand for sustainable energy increases, hydrogen production from natural gas has garnered significant attention. Plasma reforming of natural gas using clean electricity promises low-carbon pathway for hydrogen production. However, the high energy consumption of plasma reforming remains a major challenge. This work utilizes pulsed gliding arc to maintain plasma discharge during pulse intervals. Electrical signal analysis indicates that the arcs can continue gliding with only 1 % of the peak voltage during pulse intervals, with the plasma self-sustaining for up to 50 μs. Images captured by intensified complementary metal–oxide–semiconductor (ICMOS) sensors and fluid simulation results demonstrate that the plasma arc retains methane dissociation activity during the self-sustaining phase. The minimum specific energy consumption for hydrogen production is 127 kJ/mol, which is only 20 % of the energy consumption of current mainstream methane reforming by plasma processes. The gliding arc plasma technique offers an efficient catalyst-free approach for green and low-energy hydrogen production.","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"113 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-Energy Ball Milling as a novel method to mecanolyze raw material for bio-H2 production by dark fermentations of Escherichia coli","authors":"A. Martinez-Garcia, R.M. Velazquez-Vargas, E.A. Juarez-Arellano, C.G. Garay-Reyes, L. Perez-Picaso, O. Viñas-Bravo, A.K. Navarro-Mtz","doi":"10.1016/j.enconman.2024.119405","DOIUrl":"https://doi.org/10.1016/j.enconman.2024.119405","url":null,"abstract":"This study analyzed the use of high-energy ball milling as a new raw material treatment for biohydrogen (Bio-H<ce:inf loc=\"post\">2</ce:inf>) production by dark fermentation of <ce:italic>Escherichia coli</ce:italic>. Potato (<ce:italic>Solanum tuberosum</ce:italic>) and Taro (<ce:italic>Colocasia esculenta</ce:italic>), fresh and dry, were used as raw materials. A colorimetric method was used to quantify the fermentable sugar content of the raw materials. The bacterial growth kinetics, Bio-H<ce:inf loc=\"post\">2</ce:inf> production, pH, and Oxide-Reduction Potential (ORP) were monitored during dark fermentation. The formation of secondary metabolites was monitored by <ce:sup loc=\"pre\">1</ce:sup>H NMR through the fermentation. Glucose was used as a control. Mechanolysis increased the fermentable sugar content of dry and fresh potatoes by 5 and 2 times, respectively, while the fermentable sugar content of dry and fresh Taro increased by 13 and 2 times, respectively. The Bio-H<ce:inf loc=\"post\">2</ce:inf> yields in dry and fresh potato were 32.6 and 34.4 cm<ce:inf loc=\"post\">3</ce:inf>/g <mml:math altimg=\"si59.svg\" display=\"inline\"><mml:mrow><mml:mi>R</mml:mi><mml:mi>S</mml:mi></mml:mrow></mml:math>, while in dry and fresh Taro were 37.0 and 58.8 cm<ce:inf loc=\"post\">3</ce:inf>/g <mml:math altimg=\"si59.svg\" display=\"inline\"><mml:mrow><mml:mi>R</mml:mi><mml:mi>S</mml:mi></mml:mrow></mml:math>. However, the better Bio-H<ce:inf loc=\"post\">2</ce:inf> yield per g of raw material was dry Taro (7.7 cm<ce:inf loc=\"post\">3</ce:inf>/g <mml:math altimg=\"si73.svg\" display=\"inline\"><mml:mrow><mml:mi>R</mml:mi><mml:mi>m</mml:mi></mml:mrow></mml:math>). Fresh Taro reaches a Bio-H<ce:inf loc=\"post\">2</ce:inf> production efficiency of 59.4 % with respect to glucose. The highest biomass growth was also observed in fresh Taro. In addition, the metabolic pathways of the fermentation process for producing Bio-H<ce:inf loc=\"post\">2</ce:inf> by <ce:italic>E. coli</ce:italic> from raw materials modified by HEBM are proposed.","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"79 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energy-efficient process design and optimization of the absorption-based CO2 capture process with a low-pressure flash column for the SMR-based hydrogen production plant","authors":"Haryn Park, Joohwa Lee, Seokwon Yun, Jin-Kuk Kim","doi":"10.1016/j.enconman.2024.119416","DOIUrl":"https://doi.org/10.1016/j.enconman.2024.119416","url":null,"abstract":"The introduction of CO<ce:inf loc=\"post\">2</ce:inf> capture processes is being considered as a transitional solution to the energy paradigm shift and various process design studies are carried out for achieving high energy efficiency. Technical maturity and commercial availability of amine-based capture systems enables the production of blue hydrogen production through steam methane reforming (SMR), which can effectively meet the ever-increasing demand for hydrogen. In this study, an amine-based CO<ce:inf loc=\"post\">2</ce:inf> capture process integrated with a low-pressure flash column is investigated to improve our understanding on energy-efficient blue hydrogen production, in which the high-pressure condition of synthesis gas discharged from the shift converter is fully exploited. Process optimization is performed through sensitivity analysis of key design parameters. By introducing the low-pressure flash column and semi-lean solvent stream, the specific reboiler duty of the optimized process can be decreased down to 0.510 GJ/tonneCO<ce:inf loc=\"post\">2</ce:inf>, which is about 79.5% reduction in thermal energy consumption and 59.2% energy saving, compared to the conventional process. The economic trade-off between energy consumption and equipment cost is carried out, which provides practical design guidelines for improving the energy efficiency of capture processes and conceptual insights for the techno-economic impact of CO<ce:inf loc=\"post\">2</ce:inf> capture on hydrogen production.","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"24 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simplified and cost-effective pressure swing adsorption system for simultaneous production of bio-methane & biogenic CO2 from biogas","authors":"Saravanakumar Ganesan, Rafael L.S. Canevesi, Carlos A. Grande","doi":"10.1016/j.enconman.2024.119398","DOIUrl":"https://doi.org/10.1016/j.enconman.2024.119398","url":null,"abstract":"This study presents a new pressure swing adsorption (PSA) configuration using two columns integrated with a tail gas balloon that enables simultaneous production of two high purity products. Two of the four cycle developed were able produce two products, i.e. bio-methane with purity &gt; 97.0 and biogenic CO<ce:inf loc=\"post\">2</ce:inf> with purity &gt; 99.5 mol%, simultaneously. The energy efficiency of the best cycle is found to be 823 kJ/kg<ce:inf loc=\"post\">biomethane</ce:inf> which is slightly better than other reported PSA systems. Most importantly, the system productivity (7.975 <ce:inter-ref xlink:href=\"http://mol.kg\" xlink:type=\"simple\">mol.kg</ce:inter-ref><ce:sup loc=\"post\">−1</ce:sup>.h<ce:sup loc=\"post\">−1</ce:sup>) is much higher than other PSA configurations that have low methane slip in the CO<ce:inf loc=\"post\">2</ce:inf>-rich stream. A cost estimation (CAPEX and OPEX) determined CAPEX of 1.66 million USD for a PSA system processing 500 Nm<ce:sup loc=\"post\">3</ce:sup>/h of biogas. Use of polymeric balloons contribute in cost reductions by 8.3 %. The production cost of bio-methane is estimated to be 0.595 USD/Nm<ce:sup loc=\"post\">3</ce:sup> with further available reduction upon valorization of biogenic CO<ce:inf loc=\"post\">2</ce:inf>. This study demonstrates that a system analysis can significantly contribute in improving the overall separation performance of biogas upgrading. The economic analysis helped us in determining that the compressor constitutes 60 % of the CAPEX and cost reductions in this area are very important to improve upgrading plants.","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"42 1","pages":""},"PeriodicalIF":10.4,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}