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| 1 | Effect of temperature on electric-thermal properties of semiconductive shielding layer and insulation layer for high-voltage cable显示文摘A semi‐conductive shielding layer plays an important role in the uniform electric field for a high‐voltage cable.The electric‐thermal properties of the semi‐conductive layer and insulation layer directly affect the overall insulation performance of the cable.The physicochemical performances of semi‐conductive composites are firstly analysed herein.Furthermore,electric‐thermal properties of the semi‐conductive layer and insulation layer are discussed.The experimental results show that the thermal conductivity of the commercial semi‐conductive layer is about twice that of the insulation layer,owing to the effect of carbon black.The thermal expansion coefficient of the insulation layer rises from 1.86×10^(−4)/K at 25℃ to 3.20×10^(−4)/K at 90℃.By contrast,the semi‐conductive layer begins to slowly decline at a certain temperature,and decreases signif-icantly to 2.25×10^(−4)/K at 80℃,owing to the effect of ethylene‐vinyl acetate copolymer(EVA).The electrical experiments show that the resistivity of semi‐conductive composite gradually rises with an increase in temperature,and gradually declines with an increase in the carbon black content.The dc breakdown strength of the composite structure of the semi‐conductive layer/insulation layer decreases significantly with an increase in tem-perature,decreasing from 307 kV/mm at 25℃ to 203 kV/mm at 90℃.At four typical temperatures,the breakdown strength reaches the maximum value when the carbon black content is 25 phr.It is about 15%and 19%higher than carbon black contents of 20 and 30 phr.These findings have reference significance for high‐voltage cable breakdown fault analysis and material selection in cable design. | Yanhui Wei Mingyue Liu Xuejing Li Guochang Li Naiyi Li Chuncheng Hao Qingquan Lei | 2021 | High Voltage2021，6，5： | 3 |
| 2 | Microstructure and tensile properties of squeeze cast magnesium alloy AM50显示文摘 | Ming Zhou Henry Hu Naiyi Li | 2005 | Journal of Material Engineering and Performance2005，14，4： | 1 |
| 3 | Some inequalities for a LNQD sequence with applications 显示文摘 | LI Yongming GUO Jianhua LI Naiyi | 2012 | Journal of Inequalities and Applications2012，216，： | 1 |
| 4 | Measurement of elec-tric fields around a 1 000 kV UHV substation显示文摘 | LI Naiyi YANG Xi PENG Zongren | 2013 | IEEE Transactions on Power Delivery2013，28，4： | 1 |
| 5 | Potential distribution computation and structure optimization for composite cross-arms in 750 kV AC transmission line显示文摘 | Yang Xi Li Naiyi Peng Zongren | 2014 | IEEE Transactions on Dielectrics and Electrical Insulation2014，21，4： | 1 |
| 6 | Measurement of electric fields around a 1 000-kV UHV substation显示文摘 | Li Naiyi Yang Xi Peng Zongren | 2013 | IEEE Trans on Power Delivery2013，28，4： | 1 |
| 7 | A Numerical Understanding of Vertical Magnesium Thermal Reduction Processes显示文摘 | Henry Hu Alfred Yu Naiyi Li | 2002 | Magnesium Technology2002，2002，： | 1 |
| 8 | Numerical simulation of natural convection in magnesium alloy squeeze casting显示文摘 | Yu Alfred Li Naiyi Hu Hernary | 2003 | The Minerals Metals and Materials Society2003，，： | 1 |
| 9 | Survival Analysis Using Cox Proportional Hazards Regression for Pile Bridge Piles Under Wet Service Conditions显示文摘This paper studies the deterioration of bridge substructures utilizing the Long-Term Bridge Performance(LTBP)Program InfoBridge^(TM)and develops a survival model using Cox proportional hazards regression.The survival analysis is based on the National Bridge Inventory(NBI)dataset.The study calculates the survival rate of reinforced and prestressed concrete piles on bridges under marine conditions over a 29-year span(from 1992 to 2020).The state of Maryland is the primary focus of this study,with data from three neighboring regions,the District of Columbia,Virginia,and Delaware to expand the sample size.The data obtained from the National Bridge Inventory are condensed and filtered to acquire the most relevant information for model development.The Cox proportional hazards regression is applied to the condensed NBI data with six parameters:Age,ADT,ADTT,number of spans,span length,and structural length.Two survival models are generated for the bridge substructures:Reinforced and prestressed concrete piles in Maryland and reinforced and prestressed concrete piles in wet service conditions in the District of Columbia,Maryland,Delaware,and Virginia.Results from the Cox proportional hazards regression are used to construct Markov chains to demonstrate the sequence of the deterioration of bridge substructures.The Markov chains can be used as a tool to assist in the prediction and decision-making for repair,rehabilitation,and replacement of bridge piles.Based on the numerical model,the Pile Assessment Matrix Program(PAM)is developed to facilitate the assessment and maintenance of current bridge structures.The program integrates the NBI database with the inspection and research reports from various states’department of transportation,to serve as a tool for condition state simulation based on maintenance or rehabilitation strategies. | Naiyi Li Kuang-Yuan Hou Yunchao Ye Chung C.Fu | 2023 | Journal of Architectural Environment & Structural Engineering Research2023，6，2： | 0 |
| 10 | Executive inhibition in mental arithmetic显示文摘事件相关的潜力(ERP ) 被测量在心算调查行政禁止的过程。题目不得不计算视觉上在四块介绍的算术表情。ERP 分析为把“ NoCalculate ”比作的第二块被进行“计算”条件。处于 Calculate 条件,题目能计算中间的结果。处于 NoCalculate 条件,题目不得不抑制计算。结果在大约 380 ms 在 frontocentral 区域上显示出否定效果(N380 ) ,可能处于 NoCalculate 条件反映计算抑制需求。另外, dN380 (NoCalculate 计算差别) 在正确半球是更显著的,它与恰好前额的外皮仔细与反应抑制被联系的以前的 fMRI 和宠物研究的调查结果一致。结果为调查禁止的行政控制作为一个 neurobehavioral 工具支持 frontocentral N2 的归纳。 | Wang Naiyi Maess Burkhard Li Hong Luo Yuejia | 2007 | Progress in Natural Science:Materials International2007，17，B07： | 0 |
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