Journal of Nanomaterials最新文献_第10页

The Effects of Ag Nanoislands on the Volatile Threshold-Switching Behaviors of Au/Ag/HfO2/Ag Nanoislands/Au Devices Ag纳米岛对Au/Ag/HfO2/Ag纳米岛/Au器件挥发性阈值开关行为的影响

4区材料科学

Journal of Nanomaterials Pub Date : 2023-05-06 DOI: 10.1155/2023/6675683

Fanlin Long, Yichuan Zhang, Zhaozhu Qu, Peiwen Lv, Baolin Zhang

引用次数: 0

Radiosensitivity Enhancement using Triptorelin Conjugated Bismuth Sulfide Nanoparticles (Bi2S3@BSA) in Radiotherapy for Breast Cancer Cells 雷公霉素共轭硫化铋纳米颗粒(Bi2S3@BSA)在乳腺癌细胞放疗中的放射敏感性增强

4区材料科学

Journal of Nanomaterials Pub Date : 2023-05-06 DOI: 10.1155/2023/5485632

Yazdan Choghazardi, H. Azimian, Alireza Montazer Abadi, Milad Mohammadi Khoshisani, Fereshteh Vaziri Nezamdoust, H. Gholamhosseinian

{"title":"Radiosensitivity Enhancement using Triptorelin Conjugated Bismuth Sulfide Nanoparticles (Bi2S3@BSA) in Radiotherapy for Breast Cancer Cells","authors":"Yazdan Choghazardi, H. Azimian, Alireza Montazer Abadi, Milad Mohammadi Khoshisani, Fereshteh Vaziri Nezamdoust, H. Gholamhosseinian","doi":"10.1155/2023/5485632","DOIUrl":"https://doi.org/10.1155/2023/5485632","url":null,"abstract":"The aim of this study was to assess the radiosensitivity of bismuth sulfide nanoparticles conjugated with a synthetic agonist analog of gonadotropin-releasing hormones in targeted radiotherapy for breast cancer. After synthesis and characterization of nanoparticles, cytotoxicity of nanoparticles was measured by MTT assay, and the survival fraction was determined by colony formation assay. Finally, flow cytometry was performed to identify the mechanism of radiosensitization. Characterization results determined the spherical shape of Bi2S3@BSA with an average size of 8.649 ± 1.6 nm, and Fourier transform infrared confirmed the successful binding of triptorelin to the surface of the nanoparticles. MTT test results show that the Bi2S3@BSA–triptorelin did not cause any toxicity (\u0000 \u0000 P\u0000 <\u0000 0.05\u0000 \u0000 ) even up to 75 μg/ml. At all doses of ionizing radiation, colony formation assays showed that the nontoxic concentration of Bi2S3@BSA–triptorelin significantly increased cell death in MCF-7 cells compared to Bi2S3@BSA (\u0000 \u0000 P\u0000 <\u0000 0.05\u0000 \u0000 ). The apoptosis test also confirmed colony formation assay results at all doses and introduced apoptosis as a mechanism of radiosensitivity produced by nanoparticles. Certainly, targeted bismuth sulfide nanoparticles can be a good candidate for increasing radiosensitivity against tumor cells.","PeriodicalId":16442,"journal":{"name":"Journal of Nanomaterials","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89015062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Plant-Mediated Synthesis of Mono- and Bimetallic (Au–Ag) Nanoparticles: Future Prospects for Food Quality and Safety 植物介导的单金属和双金属纳米颗粒(Au-Ag)合成:食品质量和安全的未来展望

4区材料科学

Journal of Nanomaterials Pub Date : 2023-05-02 DOI: 10.1155/2023/2781667

Sabyasachi Ghosh, Swarup Roy, Jishu Naskar, R. K. Kole

引用次数: 5

Effect of Different Ratios of Mentha spicata Aqueous Solution Based on a Biosolvent on the Synthesis of AgNPs for Inhibiting Bacteria 以生物溶剂为基础的薄荷水溶液不同配比对合成抑菌AgNPs的影响

4区材料科学

Journal of Nanomaterials Pub Date : 2023-04-29 DOI: 10.1155/2023/3599501

M. Qaeed, Abdulmajeed H. Hendi, Asad A. Thahe, Saleh M. Al-Maaqar, A. M. Osman, A. Ismail, A. Mindil, Alharthi A. Eid, F. Aqlan, E. Al-Nahari, A. Obaid, M. K. Warsi, A. Saif, A. Al-Farga

{"title":"Effect of Different Ratios of Mentha spicata Aqueous Solution Based on a Biosolvent on the Synthesis of AgNPs for Inhibiting Bacteria","authors":"M. Qaeed, Abdulmajeed H. Hendi, Asad A. Thahe, Saleh M. Al-Maaqar, A. M. Osman, A. Ismail, A. Mindil, Alharthi A. Eid, F. Aqlan, E. Al-Nahari, A. Obaid, M. K. Warsi, A. Saif, A. Al-Farga","doi":"10.1155/2023/3599501","DOIUrl":"https://doi.org/10.1155/2023/3599501","url":null,"abstract":"Our work was devoted to studying the effect of different concentrations of Mentha spicata aqueous extract on the green synthesis of silver nanoparticles (AgNPs) in order to obtain the most effective of these concentrations for bacteria inhibitory activity. Different concentrations of the aqueous M. spicata extract (0.25, 0.50, 0.75, and 1.00 mM) were used as biological solvent to synthesize AgNPs by means of the reduction method. The crystal structure and morphology of the NPs were characterized UV–vis spectra, X-ray diffraction (XRD), and scanning electron microscopy (SEM). The inhibition effect of AgNPs on Escherichia coli was studied to determine the minimum inhibitory concentration (MIC). The dark yellow color of the M. spicata extract aqueous solution indicates the successful synthesis of the AgNPs. UV spectra of the NPs show a gradual increase in absorption with increasing concentration of aqueous M. spicata extract solution from 0.25 to 1.00 mM, accompanied by a shift in the wavelength from 455 to 479 nm along with a change in the nanoparticle size from 31 to 9 nm. The tests also showed a high activity of the particles against bacteria (E. coli) ranging between 15.6 and 62.5 µg/ml. From the AgNPs, it was confirmed that aqueous M. spicata extract is an effective biosolvent for the synthesis of different sizes of AgNPs according to the solvent concentration. The AgNPs also proved effectual for the killing of bacteria.","PeriodicalId":16442,"journal":{"name":"Journal of Nanomaterials","volume":"111 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77881254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Porous Stainless Steel Microsphere Synthesis by a Nonconventional Powder Metallurgy Process Useful in the Cermet-Type Advanced Nuclear Fuel Fabrication 非常规粉末冶金工艺合成多孔不锈钢微球，用于金属陶瓷型先进核燃料制造

4区材料科学

Journal of Nanomaterials Pub Date : 2023-04-29 DOI: 10.1155/2023/3555763

Luciana Sampaio Ribeiro, Francisco Javier Rios, Armindo Santos

{"title":"Porous Stainless Steel Microsphere Synthesis by a Nonconventional Powder Metallurgy Process Useful in the Cermet-Type Advanced Nuclear Fuel Fabrication","authors":"Luciana Sampaio Ribeiro, Francisco Javier Rios, Armindo Santos","doi":"10.1155/2023/3555763","DOIUrl":"https://doi.org/10.1155/2023/3555763","url":null,"abstract":"The fabrication of SS (stainless steel)-UO2 cermet-type advanced nuclear fuel pellets suitable for use in power reactors depends on the development of metallic (SS), ceramic (UO2), and cermet (SS-UO2) microspheres with special characteristics. In this work, a nonconventional powder metallurgy process was developed to produce porous SS microspheres aiming to contribute to solve the bottlenecks found in the SS-UO2 cermet pellet manufacturing. SS, UO2, and SS-UO2 microspheres and SS-UO2 cermet pellets were fabricated and characterized (XRD, EDX, EDS, and SEM). Hard (153 ± 5 µm; 132.2 ± 24.7 MPa; 72% TD) and soft (216 ± 10 µm; 1.3 ± 0.4 MPa; 17% TD) SS, hard (176 ± 6 µm; 147.4 ± 25.0 MPa; 99% TD) UO2, and cermet (SS-UO2) microspheres were obtained. The soft porous SS microspheres did not micronize properly in situ, but their high compressibility favors the compaction of the green SS-UO2 cermet pellet; in this pellet, the UO2 microspheres behaved as rigid inclusions. This favored the obtainment of sintered SS-UO2 cermet pellets with high geometric densities (93% TD), excellent metal–ceramic interaction, and the preservation of the physical integrity of the UO2 microspheres. The usage of high fractions of the SS-UO2 cermet microspheres obtained mixed with low fractions of the said soft porous SS microspheres is already under development. This will enable the fabrication of SS-UO2 cermet pellets with a volume fraction greater than 42 vol% UO2, a homogeneous distribution of UO2 microspheres in the metallic matrix, and null connection between them. The oxide–metal reduction mechanisms were discussed. The applicability of the process is already being explored in the manufacture of porous NdFeB microspheres.","PeriodicalId":16442,"journal":{"name":"Journal of Nanomaterials","volume":"148 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72453955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cement-Based Graphene Oxide Composites: A Review on Their Mechanical and Microstructure Properties 水泥基氧化石墨烯复合材料力学性能与微观结构研究进展

4区材料科学

Journal of Nanomaterials Pub Date : 2023-04-28 DOI: 10.1155/2023/6741000

Amin Kedir, Merga Gamachu, Alexander Gladwin Alex

{"title":"Cement-Based Graphene Oxide Composites: A Review on Their Mechanical and Microstructure Properties","authors":"Amin Kedir, Merga Gamachu, Alexander Gladwin Alex","doi":"10.1155/2023/6741000","DOIUrl":"https://doi.org/10.1155/2023/6741000","url":null,"abstract":"Concrete is a material made from cement that is widely used because it has a high compressive strength, is resistant to water, is easy to mold, and is cheap to make. But concrete’s biggest problem is that it’s easy to break because it does not resist cracking well, has low tensile strength, and cannot take a lot of stress. Researchers have been successful in enhancing the quality of cement composites by using fibers, admixtures, and other cementitious materials. When it comes to building objects, nanotechnology could open up a whole new world. Building materials have made nanosized materials that are used to make cementitious materials stronger and last longer. For example, they stop microcracks from starting and spreading. One of the most well-known graphene derivative nanomaterials is graphene oxide (GO), which has a lot of active oxygen-containing groups on its surface, outstanding mechanical properties, and thermal conductivity. Researchers have found that adding small amounts of GO in various dosages increases the flexural, tensile, and compressive strengths of cement paste and mortar. The majority of studies have looked at cement paste and mortar. There are few GO-concrete studies. One of the most characteristic graphene derivative nanomaterials, graphene oxide (GO), has a huge specific surface area, outstanding mechanical properties, thermal conductivity, and a lot of active oxygen-containing groups on its surface. Small amounts of GO at various dosages boost the flexural, tensile, and compressive strengths of cement paste and mortar, according to researchers. Most researches have examined cement paste and mortar. There are few GO-concrete studies. This article review paper will be useful for engineers and researchers investigating the impact of GO on mechanical qualities and advanced nanomaterials in cement-based materials like concrete. It will also be a point of reference for further research.","PeriodicalId":16442,"journal":{"name":"Journal of Nanomaterials","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83096544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization on Stir Casting Process Parameters of Al7050/Nano-B4C Metal Matrix Composites Al7050/纳米b4c金属基复合材料搅拌铸造工艺参数优化

4区材料科学

Journal of Nanomaterials Pub Date : 2023-04-28 DOI: 10.1155/2023/3615093

G. Ananth, T. Muthu Krishnan, S. Thirugnanam, Tewedaj Tariku Olkeba

{"title":"Optimization on Stir Casting Process Parameters of Al7050/Nano-B4C Metal Matrix Composites","authors":"G. Ananth, T. Muthu Krishnan, S. Thirugnanam, Tewedaj Tariku Olkeba","doi":"10.1155/2023/3615093","DOIUrl":"https://doi.org/10.1155/2023/3615093","url":null,"abstract":"Aluminum matrix composites are widely employed in aerospace, military, automobile, and transport applications. The high-strength with low-weight materials are required to fulfill the requirement of high-performance applications. The low-weight materials are reinforced with hard reinforcements to obtain high-strength-to-weight properties for using high-performance applications. The process parameters of fabrication technique define the mechanical and tribological properties. Many types of optimization tools are used for optimizing the process parameters of fabrication method. In this research, the aluminum alloy 7050 and boron carbide are selected as matrix material and reinforcement material. The fabrication of Al7050/B4C composites is produced by the stir casting method. The optimization on stir casting process parameters is done by using the Taguchi approach. The L9 orthogonal array is chosen for this investigation. The chosen input stir casting process parameters are wt% B4C, stirring time (10, 15, and 20 min), stirring speed (300, 350, and 400 rpm), and melting temperature (700, 750, and 800°C). The microhardness is selected as a valuable response parameter for optimizing the stir casting process parameters. The influencing stir casting process parameter sequence is determined by using mean table. The influencing parameters of stir casting on microhardness are stirring speed, stirring time, wt% B4C, and melting temperature. The 9 wt% of boron carbide addition increases the microhardness, and it is higher than the other wt%. The optimum combination of input process parameter combination is 9 wt% boron carbide, 750°C melting temperature, 350 rpm stirring speed, and 15 min stirring time (A3B2C2D2). The percentage of microhardness value improvement is 20.3%.","PeriodicalId":16442,"journal":{"name":"Journal of Nanomaterials","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74617064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesized Nanoaluminum Oxide with Al2024 to Investigate Wear Behavior by Grey Relational Approach and ANN 应用灰色关联法和人工神经网络研究Al2024合成纳米氧化铝的磨损行为

4区材料科学

Journal of Nanomaterials Pub Date : 2023-04-28 DOI: 10.1155/2023/9788451

D. Surrya prakash, V. Rajangam, Joby Joseph, S. Rajeshkannan, E. Shankar, A. Gopalan, Pravin P. Patil, Subash Thanappan

{"title":"Synthesized Nanoaluminum Oxide with Al2024 to Investigate Wear Behavior by Grey Relational Approach and ANN","authors":"D. Surrya prakash, V. Rajangam, Joby Joseph, S. Rajeshkannan, E. Shankar, A. Gopalan, Pravin P. Patil, Subash Thanappan","doi":"10.1155/2023/9788451","DOIUrl":"https://doi.org/10.1155/2023/9788451","url":null,"abstract":"Aluminum metal matrix composites (AMCs) have been employed in automobile manufacturing to reduce weight. Also this research concentrates on the tribological performances on the processed AMCs by the stir casting liquefying method. The aluminum alloy Al2024 was employed to nanoparticles of aluminum oxide for the preparation of AMCs with constant processing condition of stirring speed to produce the homogeneous dispersion. The processed composites were further investigated to identify the wear characteristics. Therefore, the dry sliding condition was achieved on the processed composites. The input parameters of dry sliding conditions are sliding distance, functional load, and sliding velocity, and the output characteristics are wear rate and coefficient of friction (COF). Those input parameters are framed by the Taguchi L9 array and parameters were further employed to optimize with grey relational analysis. From the L9 parameters, the better wear rate and COF were accumulated in the following parameter: 2,100 mm of sliding distance, 25 N of functional load, and 2.5 m/s of sliding velocity, respectively. Then the wear rates and COF values are subjected to produce the predicted responses with supporting of artificial neural network. Most of the predicted values are much higher than the actual wear response vales. The wear resistance of all the samples composed better performances with dispersion of nanoaluminum oxide particles on the Al2024 alloy.","PeriodicalId":16442,"journal":{"name":"Journal of Nanomaterials","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86669931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Physical and Chemical Investigation of TiO2 Nanotubes Treated with Isopropyl Triisostearoyl Titanate (KR-TTS) 钛酸异丙基三异硬脂酸酯(KR-TTS)处理TiO2纳米管的理化研究

4区材料科学

Journal of Nanomaterials Pub Date : 2023-04-28 DOI: 10.1155/2023/7961857

Ban Ali Sabri, M. Satgunam, A. Manap, C. L. Gnanasagaran, K. Ramachandran

{"title":"Physical and Chemical Investigation of TiO2 Nanotubes Treated with Isopropyl Triisostearoyl Titanate (KR-TTS)","authors":"Ban Ali Sabri, M. Satgunam, A. Manap, C. L. Gnanasagaran, K. Ramachandran","doi":"10.1155/2023/7961857","DOIUrl":"https://doi.org/10.1155/2023/7961857","url":null,"abstract":"The aim of this study is to investigate the effect of isopropyl triisostearoyl titanate (KR-TTS) as a titanate coupling agent (TCA) on surface modification of TiO2 nanotube (TNT) material. From the physical and chemical studies that have been performed on the modified TiO2 nanotube, scanning electron microscope micrographs, energy-dispersive X-ray and viscosity indicated that there was significant reduction in particle aggregation of the modified TiO2 Nanotube. FTIR spectroscopy confirmed that the functional group of the TCA reacted with the hydroxyl groups present on the surface of TiO2 nanotube resulting in an altered surface property from being hydrophilic to hydrophobic. X-ray diffraction indicated that crystalline structure did not change upon the modification with the coupling agent. Isopropyl triisostearoyl titanate (KR-TTS) is found to be superior in performance and has a significant effect on the dispersion and resolving of agglomeration. This paper presents the effect of surface modification with the TCA of isopropyl triisostearoyl titanate (KR-TTS) type on the TiO2 nanotube material.","PeriodicalId":16442,"journal":{"name":"Journal of Nanomaterials","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85106529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing Numerous Influencing Parameters of Nano-SiO2/Banana Fiber-Reinforced Hybrid Composites using Taguchi and ANN Approach 采用田口法和人工神经网络优化纳米sio2 /香蕉纤维增强混杂复合材料的众多影响参数

4区材料科学

Journal of Nanomaterials Pub Date : 2023-04-27 DOI: 10.1155/2023/3317584

L. Natrayan, Raviteja Surakasi, Pravin P. Patil, S. Kaliappan, V. Selvam, P. Murugan

{"title":"Optimizing Numerous Influencing Parameters of Nano-SiO2/Banana Fiber-Reinforced Hybrid Composites using Taguchi and ANN Approach","authors":"L. Natrayan, Raviteja Surakasi, Pravin P. Patil, S. Kaliappan, V. Selvam, P. Murugan","doi":"10.1155/2023/3317584","DOIUrl":"https://doi.org/10.1155/2023/3317584","url":null,"abstract":"High specific strength, strength-to-weight ratio, cheap cost, and other advantages, nanofillers are now the subject of most research on natural fibers. The current research’s main goal is to combine the Taguchi and artificial neural networks (ANN) approaches to maximize the mechanical characteristics of nanocomposites. The parameters: (i) nano-SiO2 wt%, (ii) banana fiber wt%, (iii) compression pressure in MPa, and (iv) compression molding temperature in °C were selected to achieve the objectives above. An L16 orthogonal array was used to optimize the process parameters based on the Taguchi technique. According to the intended experiment, mechanical characteristics, such as tension, bending, and impact strength, were assessed. The ANN was used to forecast outcomes that were optimized. The fiber mat thickness of banana fiber and the weight ratio of nano-SiO2 showed a considerable improvement in the mechanical characteristics of hybrid composites. According to the Taguchi technique, the most significant mechanical characteristics were 47.36 MPa tensile, 64.48 MPa flexural, and 35.33 kJ of impact under circumstances of 5% SiO2, 19 MPa pressure, and 110 °C. With 95% accuracy, ANN-predicted mechanical strength. The ANN forecast was more accurate than the regression model and experimental data. The above nanobased hybrid composites are mainly employed to satisfy the needs of the contemporary vehicle sector.","PeriodicalId":16442,"journal":{"name":"Journal of Nanomaterials","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79413147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2