Renewable Energy最新文献_第8页

Salt resistant green graphene foam for solar energy conversion: Energy and economic analysis 太阳能转换用耐盐绿色石墨烯泡沫：能源与经济分析

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-06-09 DOI: 10.1016/j.renene.2025.123683

Dharmveer Yadav , Vikash Kumar Chauhan , Amrit Kumar Thakur , Kousik Pradhan , Sumit Saxena , Shobha Shukla

{"title":"Salt resistant green graphene foam for solar energy conversion: Energy and economic analysis","authors":"Dharmveer Yadav , Vikash Kumar Chauhan , Amrit Kumar Thakur , Kousik Pradhan , Sumit Saxena , Shobha Shukla","doi":"10.1016/j.renene.2025.123683","DOIUrl":"10.1016/j.renene.2025.123683","url":null,"abstract":"<div><div>The growing scarcity of clean water, driven by population growth and climate change, calls for sustainable and cost-effective solutions in the current global context. Materials like graphene, known for their unique properties, have attracted significant attention. This study employed a green approach to synthesise highly porous and flexible oxidized graphene foam (OGF) derived from waste materials for enhancing interfacial evaporation and freshwater production from saline water using solar energy. This was achieved by modifying a conventional solar still (CSS) with OGF foam. Results show that the modified solar still (MSS) efficiently converts solar energy into heat, accelerating both the rate of evaporation and condensation. The average surface water temperature in the MSS was 2.64 times higher than in CSS, highlighting its superior heat retention capacity. Thermal studies showed a significant increase in energy conversion, leading to a 93.80 % increase in freshwater generation in the MSS. An energy-economic study revealed that the MSS has 1.95 times higher energy savings compared to CSS. Furthermore, the cost of freshwater production in the modified solar still is 1.54 times lower than the CSS, making it more economically viable solution. This eco-friendly and cost-effective graphene-based foam shows excellent potential in seawater desalination.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"254 ","pages":"Article 123683"},"PeriodicalIF":9.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144291505","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}

引用次数: 0

Toward 100% fuel utilization in protonic ceramic fuel cells: modelling gas and current density distributions in a dead-end anode 在质子陶瓷燃料电池中实现100%的燃料利用率：模拟在一个死端阳极中的气体和电流密度分布

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-06-09 DOI: 10.1016/j.renene.2025.123705

Kunpeng Li , Yohei Nagata , Takeru Murakami , Nozomi Kitamura , Kosuke Yamauchi , Yuichi Mikami , Tomohiro Kuroha , Shun Kobayashi , Masashi Mori , Takuto Araki

{"title":"Toward 100% fuel utilization in protonic ceramic fuel cells: modelling gas and current density distributions in a dead-end anode","authors":"Kunpeng Li , Yohei Nagata , Takeru Murakami , Nozomi Kitamura , Kosuke Yamauchi , Yuichi Mikami , Tomohiro Kuroha , Shun Kobayashi , Masashi Mori , Takuto Araki","doi":"10.1016/j.renene.2025.123705","DOIUrl":"10.1016/j.renene.2025.123705","url":null,"abstract":"<div><div>Reaching 100% fuel utilization in protonic ceramic fuel cells (PCFCs) is advantageous for developing compact systems but remains challenging due to high overpotentials and anode material degradation caused by oxidation under low H<sub>2</sub> partial pressure. We propose a dead-end anode design where the anode outlet is sealed, and a pre-filled H<sub>2</sub>O-H<sub>2</sub> gas mixture ensures the required humidity for proton conductivity. The feasibility of 100% fuel utilization has been verified by a numerical model combining mass transfer (convection and diffusion) and charge transfer. Electrical performance is optimized by the pre-filled H<sub>2</sub>O mole fraction, height and length of the anode channel. Increasing the anode channel height and reducing its length significantly enhance performance of the dead-end-anode type PCFC, enabling a comparable current density–voltage performance at 100% fuel utilization to that of a relatively small coin-type configuration operating at 3% fuel utilization. Moreover, the combined effects of convection and diffusion of H<sub>2</sub> and H<sub>2</sub>O gases help stabilize the anode gas partial pressures, thereby suppressing excessive local overpotentials. These findings, along with discussions on PCFC designs and potential applications, provide valuable insights for developing high-performance PCFCs with 100% fuel utilization for compact systems.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"254 ","pages":"Article 123705"},"PeriodicalIF":9.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144272182","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}

引用次数: 0

An energy-circuit-based fuel cell air compressor system model reconstruction and predictive control approach 基于能量回路的燃料电池空压机系统模型重构与预测控制方法

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-06-09 DOI: 10.1016/j.renene.2025.123696

Kai Ou , Wangcheng Ye , Xuezhi Zhang , Qian Zhang , Ying Shen , Ya-Xiong Wang

{"title":"An energy-circuit-based fuel cell air compressor system model reconstruction and predictive control approach","authors":"Kai Ou , Wangcheng Ye , Xuezhi Zhang , Qian Zhang , Ying Shen , Ya-Xiong Wang","doi":"10.1016/j.renene.2025.123696","DOIUrl":"10.1016/j.renene.2025.123696","url":null,"abstract":"<div><div>Fuel cell air compressor is a key enabler of hydrogen-based renewable energy systems as it improves air supply efficiency and stability. This paper first simplifies the gas flow equations, compares ideal gas path elements with circuit elements, and converts the air compressor system transfer function into an interpretable control-oriented energy-circuit-based model, and derives the transfer matrix relating flow and pressure at any position to the initial position using Laplace transforms. The reconstructed model then converts the complex frequency domain system transfer functions into the time-domain form, generating a control-oriented energy-circuit-based model for the proton exchange membrane fuel cell air compressor system to describe the dynamical and dimensional features. Under the current step condition, the energy-circuit-based air compressor system model achieves less than 5 % mean relative error (MRE) in intake manifold pressure and flow. The model-based pressure distribution has a root-mean-squared error (RMSE) and an MRE of 26.5 Pa and 0.01246 % compared to finite element results. Additionally, the energy-circuit-based air compressor system model with surge constraints has been used to develop the model predictive controller which has been further tested under typical simulation conditions. The proposed control strategy demonstrates enhanced transient response and enables the determination of pressure distribution along the pipeline.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"254 ","pages":"Article 123696"},"PeriodicalIF":9.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144272240","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}

引用次数: 0

Janus graphene aerogels with asymmetric wettability and integrated structure for efficient solar steam generation 具有非对称润湿性和一体化结构的Janus石墨烯气凝胶用于高效太阳能蒸汽产生

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-06-09 DOI: 10.1016/j.renene.2025.123682

Yan He, Yangsu Xie

{"title":"Janus graphene aerogels with asymmetric wettability and integrated structure for efficient solar steam generation","authors":"Yan He, Yangsu Xie","doi":"10.1016/j.renene.2025.123682","DOIUrl":"10.1016/j.renene.2025.123682","url":null,"abstract":"<div><div>Janus evaporators with asymmetric wettability, strong mechanical structure, and simple preparation are essential for efficient solar steam generation and seawater desalination in large-scale. In this work, a Janus graphene aerogel (JGA) with asymmetric wettability is prepared through a facile ice-templating method. The lower vertical assembled layer (VAL) of the JGA features a vertically aligned microstructure with superhydrophilicity (a droplet can quickly impregnate into the surface in just 172.4 ms), which continuously supplies water for evaporation and provides good thermal insulation. The upper horizontal assembled layer (HAL) with a horizontally stacked microstructure shows hydrophobicity (the receding water contact angle≈ 109°), enhancing solar absorption and providing horizontal heat spreading at the interface. Moreover, due to the C-N covalent bonding, the integrated structure shows good interfacial bonding strength between the two layers. This innovative design effectively enhances the heat localization and the steam generation efficiency. The evaporation rate remains stable at 1.53 kg m<sup>−2</sup> h<sup>−1</sup> after ten cycles of testing under one sun illumination (1 kW m<sup>−2</sup>), with an energy conversion efficiency of 91.9 %. The simplicity, structure robustness, and continuous operational capability makes JGA a promising candidate as solar evaporators to tackle the growing issue of water scarcity.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"254 ","pages":"Article 123682"},"PeriodicalIF":9.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144272173","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}

引用次数: 0

Best tilt of PV system in Canada: Effect of the sky radiation model and climate conditions 加拿大光伏系统的最佳倾斜：天空辐射模式和气候条件的影响

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-06-09 DOI: 10.1016/j.renene.2025.123716

Samuele Memme , Marco Fossa , Daniel Rousse

{"title":"Best tilt of PV system in Canada: Effect of the sky radiation model and climate conditions","authors":"Samuele Memme , Marco Fossa , Daniel Rousse","doi":"10.1016/j.renene.2025.123716","DOIUrl":"10.1016/j.renene.2025.123716","url":null,"abstract":"<div><div>This paper focuses on the best tilt angle of photovoltaic applications, to be related to the latitude and a latitude correction factor here presented. The analysis includes a series of 19 cities across Canada: latitude and local weather conditions are considered to define a correction angle correlation. This correction is expressed as a function of latitude, average annual weather conditions, and yearly climate variability, demonstrating strong alignment with “exact” outputs (correlation coefficient equal to 0.98 for different sky models). To ensure broad geographic coverage, Typical Meteorological Year hourly data were obtained from the Canadian Weather Year for Energy Calculation portal. The validity of the correction was assessed against various approaches and web tools results. Results were then compared with those from European cities at similar latitudes. Findings indicate that determining the optimum tilt angle requires accounting for latitude and site-specific climatic conditions, including snow cover: snowy regions benefit from higher tilts, emphasizing the relevance of considering accurate albedo in photovoltaic system design. Results suggest that this precise tilt calculation can yield annual insolation gains of up to 3.5 % with respect to rule-of-thumb angles (i.e. tilt equal to latitude), even at lower latitudes, with variations in best tilts until 13°.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"254 ","pages":"Article 123716"},"PeriodicalIF":9.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306262","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}

引用次数: 0

Enhanced CO2-to-lipid bioconversion in oleaginous Coccomyxa subellipsoidea by high light intensity: A comprehensive analysis of photosynthesis and carbon allocation 高光强增强产油Coccomyxa subbellipsoidea的co2 -to-脂生物转化：光合作用和碳分配的综合分析

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-06-09 DOI: 10.1016/j.renene.2025.123728

Yu Liu , Dong Wei , Wei Ning Chen , Zongwei Li

{"title":"Enhanced CO2-to-lipid bioconversion in oleaginous Coccomyxa subellipsoidea by high light intensity: A comprehensive analysis of photosynthesis and carbon allocation","authors":"Yu Liu , Dong Wei , Wei Ning Chen , Zongwei Li","doi":"10.1016/j.renene.2025.123728","DOIUrl":"10.1016/j.renene.2025.123728","url":null,"abstract":"<div><div>Oleaginous microalgae are promising candidates for biodiesel production due to their ability to convert CO<sub>2</sub> into lipids. However, achieving simultaneous high biomass productivity and lipid accumulation remains a challenge. This study demonstrates that high light intensity (HL, 300 μmol/m<sup>2</sup>/s) significantly enhances both CO<sub>2</sub> fixation and lipid synthesis in <em>Coccomyxa subellipsoidea</em>, a species with exceptional HL-tolerance. Under HL, 10.00 g/L biomass and 1.42 g/L/d CO<sub>2</sub> fixation rate were achieved, with increases of 61.29% and 69.05% compared to moderate light intensity (ML, 80 μmol/m<sup>2</sup>/s); lipid content (51.84% DW) and productivity (401.75 mg/L/d) reached 1.6-fold and 2.7-fold improvements, overcoming the trade-off between biomass and lipid yields. Chlorophyll fluorescence analysis revealed HL-induced non-photochemical quenching enabled high CO<sub>2</sub> fixation rate despite initial inhibition in photosystem II. Metabolome profiling revealed that proteins and free amino acids were degraded under HL, recycling nitrogen and carbon to redirect carbon flux toward lipid biosynthesis. HL optimized the fatty acid profile, improving the properties of fatty acid methyl esters that complied with biodiesel standards in China, USA and Europe. These findings establish HL-driven metabolic adaptation as a scalable strategy for CO<sub>2</sub>-to-lipid conversion, advancing carbon-neutral energy solutions and biofuels production.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"254 ","pages":"Article 123728"},"PeriodicalIF":9.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144272172","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}

引用次数: 0

Numerical and parameterized investigation on a novel backward bent duct buoy 一种新型后弯管浮筒的数值与参数化研究

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-06-09 DOI: 10.1016/j.renene.2025.123709

Tianxiang Chen , Bijun Wu , Yage You , Fuming Zhang

引用次数: 0

Laser recycling of silver in bulk and nanoparticle form from silicon solar cells and deep learning for process automation 激光从硅太阳能电池中回收大块和纳米颗粒形式的银，以及用于过程自动化的深度学习

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-06-09 DOI: 10.1016/j.renene.2025.123684

Mahantesh Khetri, Pawan K. Kanaujia, Mool C. Gupta

{"title":"Laser recycling of silver in bulk and nanoparticle form from silicon solar cells and deep learning for process automation","authors":"Mahantesh Khetri, Pawan K. Kanaujia, Mool C. Gupta","doi":"10.1016/j.renene.2025.123684","DOIUrl":"10.1016/j.renene.2025.123684","url":null,"abstract":"<div><div>This study advances the green recycling of silver from silicon solar cells by selectively removing silver from electrical contact lines through laser ablation. The laser ablation process, conducted in the air and in the water medium, provided microparticles and higher-value silver nanoparticles, respectively. Optical microscopy and energy dispersive X-ray spectroscopy (EDS) analysis confirmed the successful removal and recovery of silver. A basic understanding of laser removal of Ag is provided. Comprehensive characterization revealed the nanoparticles' size, shape, and elemental composition, with optimized laser parameters achieving 93 % purity by weight, with the remaining 7 % primarily silicon. Additionally, convolutional neural networks (CNNs) trained with TensorFlow accurately detected silver lines on broken silicon solar cells. A comprehensive training dataset enabled high accuracy across diverse geometries and conditions, with validation confirming real-world applicability. Integrating CNN models with laser ablation automated silver recovery processes, enhancing efficiency and sustainability in photovoltaic recycling. A preliminary cost analysis highlights the process's cost-effectiveness and potential for recycling other materials. This demonstrates the efficacy of laser ablation as a sustainable method for selective silver removal.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"254 ","pages":"Article 123684"},"PeriodicalIF":9.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144291504","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}

引用次数: 0

Hydrogen storage-production in aquifers: Multiple-mechanism-coupled numerical modeling and sensitivity analysis 含水层储氢生产：多机制耦合数值模拟和敏感性分析

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-06-09 DOI: 10.1016/j.renene.2025.123695

Jie Zhan, Longfei Ma, Xifeng Ding, Weijun Ni, Zhenzihao Zhang, Xianlin Ma

{"title":"Hydrogen storage-production in aquifers: Multiple-mechanism-coupled numerical modeling and sensitivity analysis","authors":"Jie Zhan, Longfei Ma, Xifeng Ding, Weijun Ni, Zhenzihao Zhang, Xianlin Ma","doi":"10.1016/j.renene.2025.123695","DOIUrl":"10.1016/j.renene.2025.123695","url":null,"abstract":"<div><div>Global climate change demands efficient energy storage solutions for transitioning to cleaner, low-carbon systems. Underground hydrogen storage (UHS) offers large capacity, extended duration, and enhanced safety, making it suitable for large-scale use. However, optimizing storage in aquifers and addressing economic challenges require specific engineering methods. This paper develops an unsteady seepage model for hydrogen storage in aquifers and predicts storage-production performance of a homogeneous aquifer model using numerical simulation. Results show hydrogen remains gaseous in homogeneous aquifers, with minor impacts from individual storage mechanisms on yield and quality. Hysteresis effects enhance gas retention and purity, reducing production but increasing bottomhole pressure. Solubility and aqueous phase property variations minimally impact yield and quality. Sensitivity analysis shows reservoir pressure impacts 64.7 %, other factors contributing less than 35 %. An injection-production ratio close to 1 with high injection rate generates the highest total hydrogen recovery and storage, while a high injection-production ratio, e.g. 4, generates a highest-hydrogen-concentration outflux. Since higher reservoir pressure would boost total hydrogen stored and produced efficiently and evidently, it is advised that injection pressure is maintained higher while the production rate could be close to injection rate, which would ensure the best recovery without producing excessive liquid.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"254 ","pages":"Article 123695"},"PeriodicalIF":9.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279546","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}

引用次数: 0

Real-time reconstruction of hydrogen leakage concentration field based on transient sparse monitoring data in hydrogen refueling stations 基于瞬态稀疏监测数据的加氢站漏氢浓度场实时重建

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-06-09 DOI: 10.1016/j.renene.2025.123690

Shilu Wang , Yubo Bi , Jihao Shi , Qiulan Wu , Chuntao Zhang , Shenshi Huang , Wei Gao , Mingshu Bi

{"title":"Real-time reconstruction of hydrogen leakage concentration field based on transient sparse monitoring data in hydrogen refueling stations","authors":"Shilu Wang , Yubo Bi , Jihao Shi , Qiulan Wu , Chuntao Zhang , Shenshi Huang , Wei Gao , Mingshu Bi","doi":"10.1016/j.renene.2025.123690","DOIUrl":"10.1016/j.renene.2025.123690","url":null,"abstract":"<div><div>This study proposes a model for real-time reconstruction of hydrogen leakage concentration field in hydrogen refueling stations (HRS) using transient sparse monitoring data. The model compresses high-dimensional hydrogen concentration features into low-dimensional representations using the encoder of vector quantized variational autoencoder (VQVAE). A multilayer perceptron (MLP) maps the sparse data to these representations, and a decoder is subsequently used to reconstruct the concentration field. The effect of monitoring point sparsity on the reconstruction accuracy is examined using a genetic algorithm (GA). The results show that the proposed VQVAE-MLP model outperforms other models, proving its effectiveness in compressing high-dimensional data. The relationship between monitoring point sparsity and reconstruction accuracy is explored, which can be used to optimize the sensor layout of real HRS. The reconstruction accuracies of different risk areas were compared by structural similarity index measure (SSIM) metrics, and the effects of wind speed and direction on the reconstruction results were analyzed. In conclusion, the proposed model effectively reconstructs hydrogen leakage risk areas in real time, enabling rapid identification of high-risk zones and enhancing the safety and emergency response capabilities of HRS.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"254 ","pages":"Article 123690"},"PeriodicalIF":9.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144272174","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}

引用次数: 0