Journal of Physics: Conference Series最新文献_第5页

Theoretical and experimental research of filtration efficiency and resistance of multi-fiber air-filter materials 多纤维空气过滤材料的过滤效率和阻力的理论与实验研究

Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2790/1/012006

Yanzi Yu, Cheng Zhang, Jiuzheng Zhang, Yaohua Wu, Rui Deng, Yu Wu, Jinming Cai

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Sol gel synthesis of TiO2@ZnO composites for self-cleaning and antimicrobial coating 溶胶凝胶合成用于自清洁和抗菌涂层的 TiO2@ZnO 复合材料

Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2792/1/012006

D. Bruzl, L. Bocian, P. Sokola, J. Másilko, M. Sedlačík, J. Svec, E. Bartonickova, F. Šoukal

{"title":"Sol gel synthesis of TiO2@ZnO composites for self-cleaning and antimicrobial coating","authors":"D. Bruzl, L. Bocian, P. Sokola, J. Másilko, M. Sedlačík, J. Svec, E. Bartonickova, F. Šoukal","doi":"10.1088/1742-6596/2792/1/012006","DOIUrl":"https://doi.org/10.1088/1742-6596/2792/1/012006","url":null,"abstract":"\u0000 In recent years, the development of advanced materials for applications in self-cleaning surfaces and antimicrobial coatings has received considerable attention due to its potential impact on environmental sustainability and public health. Among the emerging materials, metal oxide-based photocatalysts have shown promise in addressing these challenges. In this context, the present study focuses on the promise sol-gel synthesis and potential photocatalytic properties of TiO2@ZnO (x = 0.6 - 0.9) nano-scaled particles, with particular emphasis on their applications in self-cleaning and microbial coatings. The choice of TiO2@ZnO (x = 0.6 - 0.9) as the subject of investigation is driven by the advantageous properties of both titanium dioxide (TiO2) and zinc oxide (ZnO). TiO2 is known for its exceptional photocatalytic activity, while ZnO is known for its antimicrobial properties. By combining these two metal oxides in a controlled manner, we aim to harness their synergistic effects to create a multifunctional material with enhanced performance. A titanium (IV) isopropoxide and zinc acetate dihydrate have been used as precursors for the so-gel process. The synthesised powders were evaluated by X-ray diffraction analysis and Raman spectroscopy to determine the allotropy of TiO2 and possible lattice distortions. The optical band gap (Egap) was evaluated by molecular reflection UV-VIS spectroscopy. In addition, size and morphology were determined by scanning electron microscopy (SEM).","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"19 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141845882","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

Effect of different forms of calcium sulfate on the properties of cement 不同形式的硫酸钙对水泥性能的影响

Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2792/1/012003

T. Staněk, H. Szklorzová, D. Kubátová, A. Rybová

引用次数: 0

Combination of Matrix and Genetic Algorithms for Fault Location of Active Distribution Network 矩阵与遗传算法相结合用于有源配电网络故障定位

Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2774/1/012016

Juan Li, Pengpeng Lyu, Zhonghao Qian

引用次数: 0

1550nm-1600nm design and research of Erbium-doped fiber lasers 1550nm-1600nm 掺铒光纤激光器的设计与研究

Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2795/1/012014

Minghui Wang

{"title":"1550nm-1600nm design and research of Erbium-doped fiber lasers","authors":"Minghui Wang","doi":"10.1088/1742-6596/2795/1/012014","DOIUrl":"https://doi.org/10.1088/1742-6596/2795/1/012014","url":null,"abstract":"\u0000 The fiber laser, an innovative laser type, holds immense significance in optical communication, industrial processing, and scientific research owing to its remarkable high power and efficiency combination. The 1550nm light wave, widely utilized in fiber communication, renders the research and production of fiber lasers in this range pivotal for diverse applications. Within the pages of this paper, we delve into the intricate design and meticulous investigation of an erbium-doped fiber laser operating within the 1550nm-1600nm band. Our noteworthy achievement lies in the adept attainment of laser emission at 1575 nm. This success is intricately woven into the reciprocal reflection of pump light within the resonant cavity of the fiber laser and the nuanced electronic transition process of erbium ions. This paper not only unfolds a detailed exploration of the structural nuances but also unveils the design principles, methodology, and results of MATLAB simulations employed in crafting erbium-doped fiber lasers. Exhibiting exemplary performance at the 1550nm wavelength, this laser proves promising in realms such as optical communication and medical applications, signalling a paradigm shift in the possibilities within these domains. The research presented herein introduces avant-garde concepts for designing high-performance fiber lasers, providing a rich foundation for further exploration in related fields. Through this comprehensive discourse, we aim to contribute not only to the advancement of fiber laser technology but also to the expansion of possibilities in optical communication and beyond.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"14 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141846218","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

Low-voltage Compensation of Distribution Networks Based on A Hybrid UPQC with Single and Three-phase Converters 基于带单相和三相转换器的混合式 UPQC 的配电网络低电压补偿技术

Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2774/1/012101

Shichuan Chen, Xielin Shen, Bo Yuan, Weiwen Peng, Hua Ye, Zhiping Lei

引用次数: 0

Mechanical properties of blended cements affected by impurities in thermally activated clays 热活化粘土中的杂质对混合水泥机械性能的影响

Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2792/1/012005

K. Šádková, V. Pommer, E. Vejmelková, D. Koňáková

{"title":"Mechanical properties of blended cements affected by impurities in thermally activated clays","authors":"K. Šádková, V. Pommer, E. Vejmelková, D. Koňáková","doi":"10.1088/1742-6596/2792/1/012005","DOIUrl":"https://doi.org/10.1088/1742-6596/2792/1/012005","url":null,"abstract":"\u0000 With the scarcity of raw materials, energy intensiveness and environmental burden connected with producing Portland cement, there is a growing need to find substitute binders. Thermally activated clay also appears to be a suitable material for partial cement replacement. However, not all clays are the same. It depends very much on the place of collection, its chemical and phase composition, and the activation temperature. This study compared six different types of clays fired at 600 °C in terms of quantitative phase analysis and mechanical strength results. In addition to the fineness of grinding and firing temperature, the clay composition had an immense impact on mechanical properties. Content of illite up to 20% was found to be beneficial, as this clay reached the highest mechanical strengths. Regarding the quartz, its presence did not harm the overall performance of thermally activated clays and the presence of calcite could cause the improvement of the mechanical strengths. However, the clay with the most miscellaneous composition caused the deterioration of compressive strength but reached much higher bending strength compared to pure cement.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141846808","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

Research and Application of New Anti-Condensation System of High-Voltage Switchgear 新型高压开关设备防凝露系统的研究与应用

Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2774/1/012100

Jiayi Wang, Jianqiang Kou, Yankun Xia, Dianbo Zhou, Mingfu You

{"title":"Research and Application of New Anti-Condensation System of High-Voltage Switchgear","authors":"Jiayi Wang, Jianqiang Kou, Yankun Xia, Dianbo Zhou, Mingfu You","doi":"10.1088/1742-6596/2774/1/012100","DOIUrl":"https://doi.org/10.1088/1742-6596/2774/1/012100","url":null,"abstract":"\u0000 The drastic fluctuations in temperature and humidity in the switchgear environment can lead to condensation, posing the threat to the safe and dependable operation of power equipment. In response to the limitations of current anti-condensation measures, a new anti-condensation system for high-voltage switchgear is proposed. Firstly, this research provides an overview of the cause of condensation and the present situation of relevant prevention technologies. Secondly, a new anti-condensation system for high-voltage switchgear is presented. Drawing upon existing anti-condensation technology, this system effectively addresses prevalent issues such as high air humidity and facile condensation in high-voltage switchgear. Electric field simulation calculations, conducted using COMSOL simulation software, demonstrate that the system does not compromise the normal operation of the switchgear. Finally, practical applications show that the robust operational stability of the system. It consistently achieves precise heat dissipation and dehumidification in high-voltage switchgear, which has high application value.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"8 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141847113","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

Preparation and application of waste cigarette butts-derived mulch film with excellent mechanical properties and optical transparency 制备和应用从废弃烟头中提取的具有优异机械性能和光学透明度的地膜

Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2790/1/012005

Xianjie Liu, Sijun Huang, Genrong Li, Qiuquan Zhang, Haitao Zhang, Youyu Yang, Fengjie He, Donghong Sun, Zhipan Ma, Jufen Huang

引用次数: 0

Intelligent Diagnosis Method of Transformer Based on Oil Chromatographic Data 基于油色谱数据的变压器智能诊断方法

Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2774/1/012020

Mingran Su, Anan Zhang, Zemin Gong

{"title":"Intelligent Diagnosis Method of Transformer Based on Oil Chromatographic Data","authors":"Mingran Su, Anan Zhang, Zemin Gong","doi":"10.1088/1742-6596/2774/1/012020","DOIUrl":"https://doi.org/10.1088/1742-6596/2774/1/012020","url":null,"abstract":"\u0000 As one of the most important equipment in the operation of power system, ensuring the safe and stable operation of power transformer is a prerequisite for ensuring the normal supply of power grid. The failure of the power transformer will lead to the interruption of the power supply of the power grid and cause huge losses to the national economy. With the rapid development of China’s power grid scale and the continuous improvement of the intelligent construction of modern power system, the number of power equipment such as transformers is increasing. Therefore, it is necessary to make timely and accurate judgment on the status of key power transformation and distribution equipment in the power system, and grasp the operation of electrical equipment in real time, so as to ensure the reliability of power supply in the power system. This paper takes 220kV oil-immersed transformer as the research object. This paper considers the problems and characteristics of the current transformer fault diagnosis methods. By making full use of dissolved gas analysis (DGA) information in oil, a method for diagnosing faults in electrical transformers based on particle swarm optimization and generalized regression neural networks has been proposed. The simulation comparison experiment is carried out to select the most suitable transformer intelligent diagnosis method based on oil chromatographic data.","PeriodicalId":506941,"journal":{"name":"Journal of Physics: Conference Series","volume":"51 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141847756","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