Matéria (Rio de Janeiro)最新文献

Preparation and mechanical properties of functionalized graphene oxide and silane coupling agent modified carbon fiber/epoxy resin composites 功能化氧化石墨烯和硅烷偶联剂改性碳纤维/环氧树脂复合材料的制备及力学性能

Matéria (Rio de Janeiro) Pub Date : 2025-01-01 DOI: 10.1590/1517-7076-rmat-2025-0445

Zhenjiang Zhao, Pingan Guo, Yi Bian, Xue Zhao, Mingxu Yang, Xiaoda Wei, Rui Lv, Wei Yi, Wenlong Zhou

{"title":"Preparation and mechanical properties of functionalized graphene oxide and silane coupling agent modified carbon fiber/epoxy resin composites","authors":"Zhenjiang Zhao, Pingan Guo, Yi Bian, Xue Zhao, Mingxu Yang, Xiaoda Wei, Rui Lv, Wei Yi, Wenlong Zhou","doi":"10.1590/1517-7076-rmat-2025-0445","DOIUrl":"https://doi.org/10.1590/1517-7076-rmat-2025-0445","url":null,"abstract":"ABSTRACT To improve the interfacial bonding properties of carbon fiber-reinforced polymer (CFRP) composites, this study proposes an effective surface modification strategy for carbon fibers. A CF-KH560-PGO hybrid reinforcement was fabricated through chemical grafting, employing γ-glycidoxypropyltrimethoxysilane (KH560) as a coupling agent to bridge the carbon fibers (CF) with polyethyleneimine (PEI)-functionalized graphene oxide (GO). The presence of lamellar PGO has been observed on the surface of modified carbon fibers. The presence of the –NH2 peak, in conjunction with the C–N peak, on the surface of the carbon fibers, served to verify the grafting of PGO. The synergistic effect of PGO and KH560 significantly enhanced the surface wettability of carbon fibers. This study systematically investigates the mechanical performance of composites fabricated through different CF modification approaches, along with the underlying interfacial reinforcement mechanisms. The modified carbon fiber composites exhibited remarkable tensile strength (669.7 MPa) and interlaminar shear strength (60.41 MPa), representing 49.89% and 20.36% improvements respectively over desized carbon fiber composites. Grafted PGO can provide abundant amino groups for chemical bonding with epoxy resins. That KH560 and PGO increased the thickness of the interfacial transition layer, thereby enhancing the load transfer at the composite interface.","PeriodicalId":18246,"journal":{"name":"Matéria (Rio de Janeiro)","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147883489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A preliminary evaluation of inorganic composite profile control and oil displacement agent for high water cut oil fields 高含水油田无机复合调剖驱油剂初步评价

Matéria (Rio de Janeiro) Pub Date : 2025-01-01 DOI: 10.1590/1517-7076-rmat-2025-0198

Meng Yu, Guorui Xu, Liang Li, Jingjing Zhou, Leilei Tie, Bo Zhang, Xiaofei Ma, Xuan Feng, Jinzhou Yang, Lei Wang, Weizhi Li, Yufei Zheng, Bo Wu

{"title":"A preliminary evaluation of inorganic composite profile control and oil displacement agent for high water cut oil fields","authors":"Meng Yu, Guorui Xu, Liang Li, Jingjing Zhou, Leilei Tie, Bo Zhang, Xiaofei Ma, Xuan Feng, Jinzhou Yang, Lei Wang, Weizhi Li, Yufei Zheng, Bo Wu","doi":"10.1590/1517-7076-rmat-2025-0198","DOIUrl":"https://doi.org/10.1590/1517-7076-rmat-2025-0198","url":null,"abstract":"ABSTRACT An environmentally friendly inorganic composite deep profile control and oil displacement agent was prepared for high water cut oil fields with formation water containing sodium bicarbonate. Sodium silicate and calcium chloride were used as the main agents, while polycarboxylic acid dispersant and liquid polymer were used as auxiliary agents. The effects of the type of polycarboxylic acid dispersants and the mass concentration of liquid polymer on the performance of deep profile control and oil displacement agent were studied. The results showed that when the acid-ether ratio of the polycarboxylic acid dispersant was 3.7 and its molecular weight was 23800, the electrostatic repulsion and steric hindrance from polycarboxylic acid dispersant and inorganic particles achieved an effective dispersing effect. Combined with low concentration of liquid polymer (500 mg/L), the viscosity and strength of the formulated inorganic composite deep profile control and oil displacement agent could be enhanced. Results showed that this inorganic composite deep profile control and oil displacement agent could increase the flow resistance, with a plugging rate of 82.3%. It could achieve online injection, rapid dispersion, deep profile control and oil displacement with low cost, which showed high potentials in applications in high water cut oil fields.","PeriodicalId":18246,"journal":{"name":"Matéria (Rio de Janeiro)","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.scielo.br/j/rmat/a/pFL355DLfYTJRFXwqFL44TJ/?lang=en&format=pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147908718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel Au-modified Nano-SnS2: synthesis, structural analysis, and enhanced gas sensing properties 新型金修饰纳米sns2：合成、结构分析及增强气敏性能

Matéria (Rio de Janeiro) Pub Date : 2025-01-01 DOI: 10.1590/1517-7076-rmat-2025-0268

Lina Wang, Lili Li, Zhongzheng Pang, Xuesong Hui

{"title":"Novel Au-modified Nano-SnS2: synthesis, structural analysis, and enhanced gas sensing properties","authors":"Lina Wang, Lili Li, Zhongzheng Pang, Xuesong Hui","doi":"10.1590/1517-7076-rmat-2025-0268","DOIUrl":"https://doi.org/10.1590/1517-7076-rmat-2025-0268","url":null,"abstract":"Abstract This study reports a facile synthesis of Au-modified Nano-SnS2 composites through a combined water-thermal and in situ chemical reduction method, aimed at advancing low-temperature gas sensing technology. Comprehensive structural analyses using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy confirmed that incorporation of Au nanoparticles significantly alters the nanostructure. The results reveal that optimal Au loading at 0.5 wt% refines the crystallite size from approximately 25 nm to 20–23 nm, while uniformly distributed Au particles with diameters of 3–5 nm effectively form Schottky junctions that enhance interfacial charge transfer. Gas sensing measurements demonstrate that the sensor response increases from 4.7 at 1 ppm to 22.6 at 10 ppm NO2, and a linear correlation (R2 = 0.998) was observed in the lower concentration range of 1–4 ppm. Furthermore, the optimal operating temperature decreased from 140°C for the unmodified sensor to 120°C, contributing to reduced power consumption. The transient response characteristics also improved markedly, with a response time of 42 s and a recovery time of 127 s, in contrast to 220 s and 520 s for the pristine material. Long-term stability tests over 40 days revealed less than 4% variation in sensor performance, and selectivity experiments confirmed a strong preference for NO2 over other interfering gases. Overall, the synergistic effects of Au-induced electronic sensitization and catalytic activity result in enhanced sensitivity, faster kinetics, and excellent durability. These significant findings offer valuable insights for designing highly efficient sensors for environmental monitoring, paving the way for future sensor technology.","PeriodicalId":18246,"journal":{"name":"Matéria (Rio de Janeiro)","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.scielo.br/j/rmat/a/9T3B47VbSSzvCSHYBsKfxDP/?lang=en&format=pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of temperature-sensitive CMC-BENTONITE-NIPAM applied to deepwater drilling fluids 用于深水钻井液的温度敏感CMC-BENTONITE-NIPAM的制备

Matéria (Rio de Janeiro) Pub Date : 2025-01-01 DOI: 10.1590/1517-7076-rmat-2025-0416

Shupei Li, Shuangchun Yang, Xinyue Zhang, Feng Qi, Mingze Guo, Yi Pan

{"title":"Preparation of temperature-sensitive CMC-BENTONITE-NIPAM applied to deepwater drilling fluids","authors":"Shupei Li, Shuangchun Yang, Xinyue Zhang, Feng Qi, Mingze Guo, Yi Pan","doi":"10.1590/1517-7076-rmat-2025-0416","DOIUrl":"https://doi.org/10.1590/1517-7076-rmat-2025-0416","url":null,"abstract":"ABSTRACT Chemically modified bentonite has greatly improved its performance due to its structural adjustability. In this study, the modification of bentonite was accomplished through the method of sodium intercalation adsorption. The temperature-sensitive modified bentonite was prepared by initially sodifying bentonite with sodium carbonate and sodium pyrophosphate, intercalating CMC into the interlayer structure of sodified bentonite, and adsorbing N-isopropyl acrylamide (NIPAM) on the surface of bentonite. Further, the deep-water bentonite drilling fluid system was prepared. The optimal sodification conditions were determined by the single-factor control variable method of expansion volume as a drug-bentonite ratio of sodium carbonate of 1:9 and an addition amount of sodium pyrophosphate of 0.5%. The ratio of sodified bentonite to CMC drug-bentonite is 30:1. The addition amount of NIPAM was determined to be 0.5 g through the orthogonal experiment method of two factors of temperature and viscosity. Meanwhile, the temperature-sensitive modification mechanism and performance changes were analyzed through microscopic characterization and performance testing. The results show that the modified bentonite can play a significant temperature regulation role within the temperature range of 60°C and above, and the prepared drilling fluid system has good rheological properties under the condition of temperature change.","PeriodicalId":18246,"journal":{"name":"Matéria (Rio de Janeiro)","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis, mechanical characterization, and mechanism investigation of graphene-wrapped nano-titanium dioxide composite 石墨烯包裹纳米二氧化钛复合材料的合成、力学表征及机理研究

Matéria (Rio de Janeiro) Pub Date : 2024-01-01 DOI: 10.1590/1517-7076-rmat-2024-0649

Minzhe Li

{"title":"Synthesis, mechanical characterization, and mechanism investigation of graphene-wrapped nano-titanium dioxide composite","authors":"Minzhe Li","doi":"10.1590/1517-7076-rmat-2024-0649","DOIUrl":"https://doi.org/10.1590/1517-7076-rmat-2024-0649","url":null,"abstract":"ABSTRACT This study presents the synthesis and characterization of three-dimensional graphene-TiO2 (GT) composites with varying TiO2 content via a hydrothermal method. The composites exhibited a hierarchical porous structure with specific surface areas up to 243.9 m2/g, significantly higher than pure TiO2 (52.3 m2/g). FTIR analysis revealed Ti-O-C bonding, indicating strong interfacial interactions. The composites demonstrated enhanced mechanical properties, with GT-3 showing a compressive strength of 1.15 MPa and an elastic modulus of 11.3 MPa. Photocatalytic experiments showed that GT-3 degraded 92% of methylene blue under UV light in 120 minutes and 67% under visible light in 180 minutes, outperforming pure TiO2. The improved performance was attributed to efficient charge separation, as evidenced by electrochemical impedance spectroscopy and photoluminescence quenching. The composites exhibited excellent reusability, maintaining 94% activity after five cycles. UV-vis diffuse reflectance spectra revealed a narrowing of the band gap from 3.2 eV for TiO2 to 2.5 eV for GT-3, explaining the enhanced visible light activity. These results demonstrate the potential of GT composites for environmental remediation applications.","PeriodicalId":18246,"journal":{"name":"Matéria (Rio de Janeiro)","volume":"29 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147890558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficacy and mechanism of nano-biochar supported TiO2 in removing dichloroacetic acid from swimming pools 纳米生物炭负载TiO2去除游泳池中二氯乙酸的效果及机理

Matéria (Rio de Janeiro) Pub Date : 2024-01-01 DOI: 10.1590/1517-7076-rmat-2024-0316

Xin Shu, Xunlan Liu

引用次数: 1

Enhanced electrochemical performance of Sr doped ZnO for tartrazine detection in sports drink 增强Sr掺杂ZnO检测运动饮料中酒黄石的电化学性能

Matéria (Rio de Janeiro) Pub Date : 2024-01-01 DOI: 10.1590/1517-7076-rmat-2024-0332

Jun Dai, Yunzhao Liu, Erhu Jiang

{"title":"Enhanced electrochemical performance of Sr doped ZnO for tartrazine detection in sports drink","authors":"Jun Dai, Yunzhao Liu, Erhu Jiang","doi":"10.1590/1517-7076-rmat-2024-0332","DOIUrl":"https://doi.org/10.1590/1517-7076-rmat-2024-0332","url":null,"abstract":"Tartrazine (Tz) is a widely used synthetic food colorant that has raised health concerns due to its potential adverse effects. Developing sensitive and reliable methods for Tz detection in food products is crucial for ensuring consumer safety. In this study, Sr-doped ZnO nanoparticles with varying doping levels (0–7 mol%) were synthesized by mechanical milling and applied as an electrochemical sensor for detecting Tz in sports drinks. The ZnO-Sr modified carbon paste electrode (CPE), with an optimal Sr doping level of 5 mol%, exhibited the best sensing performance under optimized conditions of pH 7.0 and an accumulation time of 180 s. The sensor demonstrated a linear range from 1 to 1000 μM, a detection limit of 0.3 μM, and a sensitivity of 0.38 μA/μM for Tz identification. This performance surpasses that of many previously reported electrochemical Tz sensors. The ZnO-Sr modified CPE showed good reproducibility (RSD 3.2%), long-term stability (91.2% current retention after one month), and high selectivity against common interferents. The sensor’s practical applicability was validated by determining Tz in commercial sports drink samples, with results in good agreement with a standard UV-Vis spectrophotometric method (relative errors < 5%). Recovery tests (97.2–103.5%) further confirmed the accuracy and reliability of the proposed sensor. This work presents a simple, sensitive, and reliable approach for monitoring Tz levels in food products, addressing important food safety and human health concerns.","PeriodicalId":18246,"journal":{"name":"Matéria (Rio de Janeiro)","volume":"29 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147901473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Study on the performance and aging low temperature performance of GO / SBS modified asphalt GO / SBS改性沥青的性能及老化低温性能研究

Matéria (Rio de Janeiro) Pub Date : 2023-09-08 DOI: 10.1590/1517-7076-rmat-2023-0151

Zhenlong Mo

{"title":"Study on the performance and aging low temperature performance of GO / SBS modified asphalt","authors":"Zhenlong Mo","doi":"10.1590/1517-7076-rmat-2023-0151","DOIUrl":"https://doi.org/10.1590/1517-7076-rmat-2023-0151","url":null,"abstract":"Graphene oxide (GO) has attracted more and more attention in asphalt pavement due to its excellent performance. However, most current research is limited to GO modified base asphalt, and the modification effect is insignificant. In this paper, GO / SBS-modified asphalt was prepared by high-speed shearing. The effects of GO on the physical properties, storage stability, low-temperature performance, and aging resistance of SBS-modified asphalt were studied. A low-temperature beam bending test analyzed the low-temperature performance of GO / SBS composite modified asphalt mixture before and after aging. The results show that adding GO improves SBS-modified asphalt’s high-temperature performance, aging resistance, and storage stability. When the con - tent of GO is 0.75%, the physical properties of modified asphalt are the best. The low-temperature rheological properties of modified asphalt with GO before aging are slightly lower than those of SBS-modified asphalt. However, adding GO improves the low-temperature rheological properties of GO/SBS modified asphalt after aging. GO-modified asphalt slightly improves the low-temperature toughness of the mixture under non-aging and short-term aging. However, it still makes the mixture maintain good low-temperature performance under long-term aging. GO / SBS modified asphalt mixture has excellent low-temperature crack resistance before and after aging, and GO / SBS composite modified asphalt can effectively alleviate the damaging effect of aging on the low-temperature crack resistance of asphalt mixture and prolong the service life of the pavement.","PeriodicalId":18246,"journal":{"name":"Matéria (Rio de Janeiro)","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88142972","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}

引用次数: 1

Rheological properties and engineering application of low-grade asphalt mixture 低标号沥青混合料的流变特性及工程应用

Matéria (Rio de Janeiro) Pub Date : 2023-09-08 DOI: 10.1590/1517-7076-rmat-2023-0208

Lianguo Song, Pengcheng Tu, Xiao-lu Xie, Jingjing Fan, Lulu Hou, Jie Gao

{"title":"Rheological properties and engineering application of low-grade asphalt mixture","authors":"Lianguo Song, Pengcheng Tu, Xiao-lu Xie, Jingjing Fan, Lulu Hou, Jie Gao","doi":"10.1590/1517-7076-rmat-2023-0208","DOIUrl":"https://doi.org/10.1590/1517-7076-rmat-2023-0208","url":null,"abstract":"This study investigates the feasibility of low-grade hard asphalt in high-temperature regions. We conducted an analysis of the high-temperature rheological properties of asphalt before and after short-term and long-term aging using the dynamic shear rheological (DSR) test and multi-stress creep recovery (MSCR) test. Additionally, the road performance of the asphalt mixture was studied by rutting test and low temperature beam bending test. The results indicate that the 30# asphalt demonstrates superior anti-rutting performance compared to the 50# asphalt. Furthermore, the rutting factor and fatigue factor of the 30# asphalt during aging are significantly higher than those of the 50# asphalt. With increasing temperature, stress level, and stress action time, the strain of the asphalt gradually increases. The unrecoverable creep compliance of the 50# asphalt exceeds that of the 30#. Although the high-temperature performance of the 30# asphalt mixture outperforms that of the 50# asphalt mixture, it exhibits lower flexural tensile strength and deformation ability at low temperatures compared to the 50# asphalt mixture. Overall, low-grade asphalt demonstrates relatively stable stress variations and exhibits good high-temperature stability.","PeriodicalId":18246,"journal":{"name":"Matéria (Rio de Janeiro)","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88021418","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}

引用次数: 0

Statistical optimization of fibre reinforced polymer concrete made with recycled plastic aggregates by central composite design 基于中心复合设计的再生塑料骨料纤维增强聚合物混凝土的统计优化

Matéria (Rio de Janeiro) Pub Date : 2023-09-04 DOI: 10.1590/1517-7076-rmat-2023-0182

Ravisankar Venugopal, N. Muthusamy, Balasundaram Natarajan, Venkatesan Govindan

{"title":"Statistical optimization of fibre reinforced polymer concrete made with recycled plastic aggregates by central composite design","authors":"Ravisankar Venugopal, N. Muthusamy, Balasundaram Natarajan, Venkatesan Govindan","doi":"10.1590/1517-7076-rmat-2023-0182","DOIUrl":"https://doi.org/10.1590/1517-7076-rmat-2023-0182","url":null,"abstract":"To meet the present needs of concrete consumption, it is the need of the hour to discover different alterna - tives and unique techniques. By Incorporating the latest trends, Polymer Concrete (PC) and Fibre-Reinforced Concrete (FRC) are being used to improve the strength of concrete. It is proposed to produce M30 grade Fibre Reinforced Polymer Concrete (FRPC) with the help of Polyester Resins (PR), Polypropylene Fibres (PF) and Recycled Waste Plastics (RWPA). FRPC is a combination of three different variables of different replacement percentages, which requires extensive and detailed experimentation to optimize each variable used in this investigation. In this study (research), optimization was done by keeping the two variables constant. To reduce the number of experiments, optimization of ingredients was done by statistical modelling technique of Central Composite Design (CCD). In conclusion, the optimal input parameters for achieving a 28-day CS are determined to be 12.05% PR, 2.19% PF, and 30% RWPA. These findings are based on the analysis of experimental results, statistical modelling, and the CCD approach, demonstrating the successful optimization and correlation between the input parameters and the desired CS output.","PeriodicalId":18246,"journal":{"name":"Matéria (Rio de Janeiro)","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73344692","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}

引用次数: 0