Suranaree Journal of Science and Technology最新文献_第3页

EFFECTS OF COMBINATIONS OF LIMESTONE POWDER AND METAKAOLIN ON MORTAR COMPRESSIVE STRENGTH DEVELOPMENT 石灰石粉和偏高岭土的组合对砂浆抗压强度发展的影响

IF 0.2

Suranaree Journal of Science and Technology Pub Date : 2023-12-13 DOI: 10.55766/sujst-2023-05-e02979

Thwet Thwet Win, Thanyarat Buasiri, W. Pansuk, L. Prasittisopin

{"title":"EFFECTS OF COMBINATIONS OF LIMESTONE POWDER AND METAKAOLIN ON MORTAR COMPRESSIVE STRENGTH DEVELOPMENT","authors":"Thwet Thwet Win, Thanyarat Buasiri, W. Pansuk, L. Prasittisopin","doi":"10.55766/sujst-2023-05-e02979","DOIUrl":"https://doi.org/10.55766/sujst-2023-05-e02979","url":null,"abstract":"Cement production is a major contributor to carbon dioxide (CO2) emissions, and concrete is one of the most widely used building materials in the world. To reduce CO2 emissions from cement, supplementary cementing materials have been widely introduced in mortar and concrete mixtures. This research will explore the mechanism that determines the development of compressive strength in mortar made with partly substituted cement and a mixture of limestone powder and laboratory-quenching heat-treated kaolinite clay (also called metakaolin). Metakaolin is rich in Southeast Asian countries and needs further investigation to adopt in cement systems. Limestone powder and metakaolin constitute 45% of the binding cement ingredient by weight (dry). The strength was evaluated using mortar, and the microstructure was determined using paste. The results show that at 28 days, the compressive strength of mortar containing 45% cement substitution by 15% limestone powder and 30% metakaolin with 1% PCE (per B45S 1:2) was 97% relative to the reference mortar. However, due to the impurities in metakaolin, its synergistic interaction is limited, which results in the compressive strength being lower than anticipated.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"73 S32","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138976938","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

PHYSICAL AND THERMAL CHARACTERISTICS OF EXPANDED FOAM GLASSES USING CRUDE GLYCEROL AS A FOAMING AGENT 使用粗甘油作为发泡剂的发泡玻璃的物理和热特性

IF 0.2

Suranaree Journal of Science and Technology Pub Date : 2023-12-13 DOI: 10.55766/sujst-2023-03-e0371

Pat Sooksaen, Penpisuth Thongyoug

{"title":"PHYSICAL AND THERMAL CHARACTERISTICS OF EXPANDED FOAM GLASSES USING CRUDE GLYCEROL AS A FOAMING AGENT","authors":"Pat Sooksaen, Penpisuth Thongyoug","doi":"10.55766/sujst-2023-03-e0371","DOIUrl":"https://doi.org/10.55766/sujst-2023-03-e0371","url":null,"abstract":"Expanded foam glasses were fabricated from a clear color soda-lime silicate glass. Crude glycerol was used as an effective foaming agent which promoted small closed cell pores. This research studied the effect of crude glycerol content on the expanding characteristics and thermal properties. The expanding behavior relied on the thermal decomposition mechanism of the foaming agent as well as the sintereing temperature. Expanded foam glasses fabricated at 850°C showed uniform pore size compared to those fabricated at other temperatures (800°C and 900°C). Pore size of the synthesized foam glasses generally increased with increasing firing temperature. The evidence of black color in some areas for samples fabricated at 800°C occurred due to incomplete combustion of crude glycerol within the bulk structure. Samples produced at 850°C and 900°C showed white color shading associated with complete combustion of carbonaceous compound. Foam glasses sintered at 900°C showed structural distortion due to glass melting during the foaming process. Large holes or gaps within the structures occured due to the sweeping and combining of gas bubbles during sintering.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"131 19","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139004365","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

ELECTRICAL PROPERTIES ON COPOLYESTER INCORPORATED IN A POLYMER NANOCOMPOSITE MATRIX - A STUDY 聚合物纳米复合材料中共聚聚酯的电学性能研究

Suranaree Journal of Science and Technology Pub Date : 2023-10-11 DOI: 10.55766/sujst-2023-04-e0875

ASWINI R, S Kothai

{"title":"ELECTRICAL PROPERTIES ON COPOLYESTER INCORPORATED IN A POLYMER NANOCOMPOSITE MATRIX - A STUDY","authors":"ASWINI R, S Kothai","doi":"10.55766/sujst-2023-04-e0875","DOIUrl":"https://doi.org/10.55766/sujst-2023-04-e0875","url":null,"abstract":"This study aims at the application of the prepared Polymer Nanocomposite in the field of solid-state optoelectronic devices. Polymer Nanocomposite was prepared by incorporating iron nanoparticles, synthesized random Copolyester (BCTP), and Polypyrrole by Insitu chemical polymerization method. The application of the synthesized random Copolyester with wide biological activity due to bis chalcone moiety can also be extended to the optoelectronics field. The Copolyester (BCTP) was subjected to spectral analysis such as Fourier Transform Infrared Spectroscopy (FTIR) to confirm the chemical structural orientation. The Iron nanoparticles, Polypyrrole, and polymer nanocomposite were characterized by Fourier Transform Infrared Spectroscopy (FTIR) and powder X-ray Diffraction (PXRD). The FTIR spectroscopy confirms the formation of polymer nanocomposite by the prominent shift in stretching frequency from the starting materials taken. Powder X-ray Diffraction was used to determine the Iron Nanoparticles’ average crystallite size. The structural morphology of iron nanoparticles, Polypyrrole, and polymer nanocomposite were identified by Scanning electron Microscopy. The SEM images gave the view of Iron nanoparticles, Polypyrrole was seated in the Polymer matrix. The specific capacitance for the newly synthesized Polymer Nanocomposite was found to be 58.88 F/g by Cyclic Voltammetric analysis. The electrochemical behavior of the random copolyester (BCPT), Iron nanoparticles, Polypyrrole, and polymer nanocomposite was carried out by Impedance analysis. This confirms the Polymer Nanocomposites were conducting nature with good ionic conductance of 6.89 × 10-5 S cm-1.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136210790","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

BROACHING UNCOUTH WATER LEVEL SNAG IN UNDERGROUND AGRICULTURE FIELD THROUGH WIRELESS SENSORS 利用无线传感器拉探地下农田中不平整的水位障碍

Suranaree Journal of Science and Technology Pub Date : 2023-10-09 DOI: 10.55766/sujst-2023-04-e0855

Muhammad Zuhair Zuhair, Shahzad Ashraf, Mahnoor Iqbal, Syed Zain Raza Rizvi, Alief Khokhar, Muhammad Asgher Nadeem Nadeem

{"title":"BROACHING UNCOUTH WATER LEVEL SNAG IN UNDERGROUND AGRICULTURE FIELD THROUGH WIRELESS SENSORS","authors":"Muhammad Zuhair Zuhair, Shahzad Ashraf, Mahnoor Iqbal, Syed Zain Raza Rizvi, Alief Khokhar, Muhammad Asgher Nadeem Nadeem","doi":"10.55766/sujst-2023-04-e0855","DOIUrl":"https://doi.org/10.55766/sujst-2023-04-e0855","url":null,"abstract":"The major problem faced by the agriculture industry is the growth of seeds at optimal fertility. Such uncouth fertility occurs when either no water reaches under soil seed or some obstacles prevent it. This issue degrades agriculture growth at an aggravation level and consequently barren the land. A wireless sensor-based communication model has been developed to notice the accurate status of the water level reaching seeds of various crops such as wheat, maize, barley, and cotton with soil types Loamy, Silty clay, and Black soil. In the proposed model, \"Broadening Uncouth Water Level Snag in Underground Agriculture Field with Wireless Sensors\" (BUWLN), the water level would be measured in real time and the data would be transmitted to a base station accordingly. The 8 sensor nodes and a base station would be deployed accompanied by an Arduino package in an area of 90 x 30 square feet to monitor water levels efficiently. The study will keep track of water levels, and the farmer will be informed of the water level so they may manage water resources more effectively. In addition, farmers will also be aware of the field if water is distributed uniformly so that the crops yield increases. The performance of the proposed BUWLN model has been compared with Remote water-level monitoring system (RWMS), Low cost wireless sensor network (LCSN), and Ensemble groundwater level prediction (E-GWLP) by conducting simulation using PROTEUS. result showed that the proposed BUWLN model has enough potential for future growth.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135045585","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

HYDROGEN AND METHANE GAS CONTENT IN SYNGAS FROM THE PYROLYSIS OF MELALEUCA CAJUPUTI AND SHOREA WOOD 千层木和海岸木热解合成气中氢和甲烷气体的含量

Suranaree Journal of Science and Technology Pub Date : 2023-10-09 DOI: 10.55766/sujst-2023-04-e0465

Teguh Suprianto

{"title":"HYDROGEN AND METHANE GAS CONTENT IN SYNGAS FROM THE PYROLYSIS OF MELALEUCA CAJUPUTI AND SHOREA WOOD","authors":"Teguh Suprianto","doi":"10.55766/sujst-2023-04-e0465","DOIUrl":"https://doi.org/10.55766/sujst-2023-04-e0465","url":null,"abstract":"The increasing demand for energy and the depletion of fossil energy supplies require research to find renewable energy sources. Biomass is a very potential energy source and biomass gasification is a technique to produce syngas. Melaleuca Cajuputi (Gelam) and Shorea sp (Meranti) are one of the types wood plant that are widely available in Indonesia. This study aims to reveal the potential of biomass from swamp-growing plants, Melaleuca Cajuputi, and land-growing plants, Shorea, through a gasification process to produce syngas containing hydrogen and methane gas. Pyrolysis of biomass, Melaleuca Cajuputi and Shorea sawdust, using a fixed bed reactor at a temperature varying from 200 °C to 450 °C with a heating rate of 10 °C/minute for one hour. Hydrogen gas and methane gas resulting from pyrolysis were analyzed to determine the characteristics of the syngas produced. FTIR test was performed to support the experimental analysis. The experimental results show that Melaleuca Cajuputi wood has a lower peak FTIR intensity than Shorea wood. Melaleuca Cajuputi produces more hydrogen, while Shorea wood produces more methane gas. The highest hydrogen gas content was produced from Melaleuca Cajuputi and Shorea at temperatures of 315 °C at 1746 ppm and 1503 ppm at 367 °C respectively. Meanwhile, the highest methane gas content was produced by Shorea and Melaleuca Cajuputi wood, 200,000 ppm at 370 °C and 63,200 ppm at 318 °C respectively. The intensity of functional groups from biomass affects the gas produced from pyrolysis.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135146711","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

EFFICACY OF NANO SUPPLEMENTARY CEMENTITIOUS MATERIALS ON MECHANICAL PROPERTIES OF LOW DENSITY FOAMED CONCRETE 纳米补充胶凝材料对低密度泡沫混凝土力学性能的影响

Suranaree Journal of Science and Technology Pub Date : 2023-10-09 DOI: 10.55766/sujst-2023-04-e0958

Yogesh Tambe, Pravin Nemade

{"title":"EFFICACY OF NANO SUPPLEMENTARY CEMENTITIOUS MATERIALS ON MECHANICAL PROPERTIES OF LOW DENSITY FOAMED CONCRETE","authors":"Yogesh Tambe, Pravin Nemade","doi":"10.55766/sujst-2023-04-e0958","DOIUrl":"https://doi.org/10.55766/sujst-2023-04-e0958","url":null,"abstract":"Low density foamed concrete (LDFC) serves as an effective construction material with structural and thermal characteristics. This study reports results of experimental investigations on mechanical properties of LDFC including, thermal conductivity and drying shrinkage. Three different densities ±800, ±1000 and ±1300 kg/m3, were made with two cementitious additives like Nano-GGBS and Nano-RHA in LDFC matrix in the form of SCM. The aim of this study is to investigate the effects of various percentages of SCM on compressive strength, split tensile strength, flexural strength, thermal conductivity and drying shrinkage up to 28 days on LDFC specimens. The experimental outcomes consistently represents that the 28 days mechanical strengths, thermal conductivity and drying shrinkage increased with increasing percentage of Nano-GGBS and Nano-RHA. The 10% replacement of SCM of both the materials shows good agreement on the performance of LDFC. The split-tensile strength and flexural strength attains in the range of 19–21% and 33–46% related with 28 days compressive strength. The thermal insulation and drying shrinkage of LDFC specimens reduced with the increased density. The purpose of this research to assess the efficacy of Nano-GGBS and Nano-RHA as a SCM considering aspects of economical and sustainable concrete in LDFC matrix. It is observed that, with increase in SCM percentages, the shrinkage strain increases with testing age. The drying shrinkage of LDFC specimens reduces with density. Overall, the 10% addition of Nano-GGBS and Nano-RHA as filler in LDFC production minimizes the load on consumption of natural resources, CO2 emissions and achieves economy.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135146751","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

POWER SPECTRAL ANALYSIS OF VARYING COMPLEXITY TASKS USING EEGLAB 使用eeglab进行不同复杂任务的功率谱分析

Suranaree Journal of Science and Technology Pub Date : 2023-10-09 DOI: 10.55766/sujst-2023-04-e0741

Varsha Lokare, Kiwelekar A.W., Netak L.D., N.S. Jadhav

{"title":"POWER SPECTRAL ANALYSIS OF VARYING COMPLEXITY TASKS USING EEGLAB","authors":"Varsha Lokare, Kiwelekar A.W., Netak L.D., N.S. Jadhav","doi":"10.55766/sujst-2023-04-e0741","DOIUrl":"https://doi.org/10.55766/sujst-2023-04-e0741","url":null,"abstract":"Analysis of the effects of increasing degrees of complexity on students’ brains is the primary topic of this research. Therefore, this study aims to use Electroencephalography (EEG) to determine the task’s difficulty level. This research examined assertions of broad mathematical and logical difficulty that can be addressed with the “C programming language.” The EEGLAB software has been used to analyze brain waves’ power spectrums while solving problem statements of different degrees of complexity. Most significantly, we discovered that as problem statements get more complicated, the strength of the Alpha, Beta, and Theta bands rises. Input features for machine learning classifiers have included descriptive statistical metrics such as mean, standard deviation, skewness, and kurtosis. Specifically, we have compared and analyzed the efficacy of four ML classifiers: Logistic Regression, Neural Network, Decision Tree, and Support Vector Machine. To classify EEG data into “easy” and “hard” categories for C programming problem statements, the DT classifier has been found to perform better with a 69.23% accuracy. The results of this research can be used to generate test questions for open-book exams, and higher-order laboratory experiments.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135146825","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

THE STUDY ON TEMPERATURE-DEPENDENT SURFACE CRITICAL MAGNETIC FIELD OF IRON-BASED SUPERCONDUCTORS 铁基超导体温度随表面临界磁场的研究

Suranaree Journal of Science and Technology Pub Date : 2023-10-09 DOI: 10.55766/sujst-2023-04-e02414

Thitipong Kruaehong, Suppanyou Meakniti, Pongkaew Udomsamuthirun, Arpapong Changjan

引用次数: 0

Technical modification of alkali leaching circuit to improve slurry throughput into the autoclave 碱浸回路的技术改造，提高浆液进入高压釜的能力

Suranaree Journal of Science and Technology Pub Date : 2023-10-09 DOI: 10.55766/sujst-2023-04-e0998

VIPIN KUMAR SHARMA

{"title":"Technical modification of alkali leaching circuit to improve slurry throughput into the autoclave","authors":"VIPIN KUMAR SHARMA","doi":"10.55766/sujst-2023-04-e0998","DOIUrl":"https://doi.org/10.55766/sujst-2023-04-e0998","url":null,"abstract":"Tummalapalle Mill represents an alkali leaching-based uranium processing plant. Alkali leaching occurs inside pressurized autoclaves at controlled temperature and pressure. Although the rated capacity of the Tummalapalle Mill is 3000TPD [1], few obstructions were present to achieve the rated capacity. The technical study was done by the process and mechanical engineer team of Tummalapalle Mill for necessary improvements to achieve the rated capacity, which helped in the overall grinding rate of the processing plant. In the alkali leaching section of the Tummalapalle unit, Autoclaves (pressure vessels) are used for alkali leaching purposes. To run the plant at full rated throughput, i.e. 3000TPD, it is required to push the slurry into autoclaves by double hose-diaphragm pumps through spiral heat exchangers with a sufficient flow rate. During the regular course of operation, each double hose-diaphragm pump was able to discharge a limited flow rate with the existing motor-designed parameters. This paper deals with the technical details of double hose-diaphragm pumps, recent technical modifications incorporated & consequent trials taken to increase the pump flow rate and thereby achieve the required throughput into autoclaves.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135095739","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

Enhancing Cybersecurity Defense of IoT Ecosystem Using Blockchain 利用区块链增强物联网生态系统的网络安全防御

Suranaree Journal of Science and Technology Pub Date : 2023-10-09 DOI: 10.55766/sujst-2023-04-e01071

Prashant Setia, None Sandosh S

{"title":"Enhancing Cybersecurity Defense of IoT Ecosystem Using Blockchain","authors":"Prashant Setia, None Sandosh S","doi":"10.55766/sujst-2023-04-e01071","DOIUrl":"https://doi.org/10.55766/sujst-2023-04-e01071","url":null,"abstract":"The expansion of IoT devices over the past years has led to the development of smart ecosystems susceptible to cyberattacks. These ecosystems include smart industries and smart home security systems. However, when these devices are widely deployed and generate significant amounts of data, this data must be securely stored on the cloud to prevent it from being compromised by serious cyber attacks. Although traditional security methods partly meet the need to protect the privacy and security of smart IoT ecosystems, their centralized structure and limited computing power make them inefficient. However, recent advancements in blockchain technology have made it possible to employ decentralized architectures to enhance the cybersecurity defense mechanisms of IoT ecosystems. The utilization of blockchain-enabled methodologies is considered one of the most auspicious advancements in the domain of the IoT. These techniques offer a secure and decentralized mode of communication among internet-connected devices. \u0000This study presents a blockchain-based novel framework to enhance the cybersecurity measures of smart IoT ecosystem installations. The proposed framework prioritizes the immutability of devices and users present in such environments and incorporates smart contracts to ensure their overall security. Furthermore, the system includes a module for regularly verifying the firmware of connected devices by comparing them to the valid firmware hashes present in the smart contract's storage. The proposed approach has also come up with the idea of blacklisting the malicious IP addresses trying to connect with IoT ecosystems network.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135146964","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