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Frontiers of Structural and Civil Engineering 2024年第10期18卷 1479-1491页

作者： junchen ye Zhixin ZHANG Ke CHENG Xuyan TAN Bowen DU Weizhong CHEN School of Transportation Science and Engineering Beihang UniversityBeijing 100191China CCSE Lab Beihang UniversityBeijing 100191China State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil Mechanics Chinese Academy of SciencesWuhan 430071China University of Chinese Academy of Sciences Beijing 100049China

Civil infrastructure is prone to structural damage due to high geo-stress and other natural disasters,so monitoring is *** collected by structural health monitoring(SHM)systems are easily affected by many factors,such as temperature,sensor fluctuation,sensor failure,which can introduce a lot of noise,increasing the difficulty of structural anomaly *** address this problem,this paper designs a new process of structural anomaly identification under noisy conditions and offers Civil Infrastructure Denoising Autoencoder(CIDAE),a denoising autoencoder-based deep learning model for SHM of civil *** a case study,the effectiveness of the proposed model is verified by experiments on deformation stress data of the Wuhan Yangtze River Tunnel based on finite element *** of the circumferential weld and longitudinal weld data of the case study is also *** is concluded that CIDAE is superior to traditional methods.

关键词： structural health monitoring deep learning anomaly detection

Effects of Landau damping and collision on stimulated Raman scattering with various phase-space distributions

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Chinese Physics B 2022年第5期31卷 464-472页

作者： Shanxiu Xie Yong Chen junchen ye Yugu Chen Na Peng Chengzhuo Xiao Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education School of Physics and ElectronicsHunan UniversityChangsha 410082China Institute of Applied Physics and Computational Mathematics Beijing 100094China Collaborative Innovation Center of IFSA(CICIFSA) Shanghai Jiao Tong UniversityShanghai 200240China

Stimulated Raman scattering(SRS)is one of the main instabilities affecting success of fusion ***,we study the relationship between Raman growth and Landau damping with various distribution functions combining the analytic formulas and Vlasov *** Landau damping obtained by Vlasov-Poisson simulation and Raman growth rate obtained by Vlasov-Maxwell simulation are anti-correlated,which is consistent with our theoretical analysis *** distribution,flattened distribution,and bi-Maxwellian distribution are studied in detail,which represent three typical stages of *** also demonstrate the effects of plateau width,hot-electron fraction,hot-to-cold electron temperature ratio,and collisional damping on the Landau damping and growth *** gives us a deep understanding of SRS and possible ways to mitigate SRS through manipulating distribution functions to a high Landau damping regime.

关键词： stimulated Raman scattering Landau damping distribution functions

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电能计量中的自动化技术应用

科技资讯 2024年第9期22卷 60-62页

作者：叶俊辰国网福建省电力有限公司泰宁县供电公司福建三明354400

电能计量系统属于电力管理系统的基础性内容,主要负责对各项基础性数据进行采集和计量,能够为后续运维与管理等工作的开展提供数据依据,是保证电力系统管理工作开展质量的关键所在。将自动化技术应用到电能计量中,能够在有效提高电能计... 详细信息

电能计量系统属于电力管理系统的基础性内容,主要负责对各项基础性数据进行采集和计量,能够为后续运维与管理等工作的开展提供数据依据,是保证电力系统管理工作开展质量的关键所在。将自动化技术应用到电能计量中,能够在有效提高电能计量效率的同时,解决人工计量所存在的各种问题,保证电能计量精准度,会对我国电力系统应用与发展产生积极作用。通过对电能计量自动化技术应用优势的介绍,对自动化系统展开研究,并会在此基础上对自动化技术在电能计量中的应用展开深度探讨,旨在提高自动化技术应用水平,推动我国电能计量工作稳定性发展。

关键词：电能计量负荷管理系统智能抄表系统自动化技术

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基于时空数据的地下空间基础设施智能监测系统

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Engineering 2023年第6期25卷 194-203,M0008页

作者：杜博文叶俊辰朱合华孙磊磊杜彦良 State Key Laboratory of Software Development Environment Beihang UniversityBeijing 100191China Department of Geotechnical Engineering College of Civil EngineeringTongji UniversityShanghai 200092China Institute of Urban Smart Transportation and Safety Maintenance Shenzhen UniversityShenzhen 518060China

基于时空大数据的智能感知、机理认知和劣化预知,不仅促进了基础设施安全的发展,同时也是基础设施建设向智能化转变的基础理论和关键技术。地下空间利用的发展,形成了深、大、聚的三大特征和立体的城市布局。然而,与地上的建筑物和桥梁... 详细信息

基于时空大数据的智能感知、机理认知和劣化预知,不仅促进了基础设施安全的发展,同时也是基础设施建设向智能化转变的基础理论和关键技术。地下空间利用的发展,形成了深、大、聚的三大特征和立体的城市布局。然而,与地上的建筑物和桥梁相比,发生在地下的疾病和退化更为隐蔽,难以识别,在建设和服务期间仍然存在许多挑战。针对这一问题,本文总结了现有的方法,并在现实世界的空间安全管理中评估了它们的长处和短处,并在统一的智能监控系统中,讨论关键科学问题和解决方案。

关键词：基础设施安全智能感知智能监控系统智能监测系统时空数据地下空间利用时空大数据城市布局

视频测试系统在结构风洞测试应用的可行性研究

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市政技术 2021年第11期39卷 117-122页

作者：曾炯坤叶俊辰广州市市政工程设计研究总院有限公司广东广州510095 湖南大学湖南长沙410082

基于非接触式精密位移测量系统,对典型直立悬臂结构进行自由振动动力特性标定试验,将激光位移计与非接触式精密位移测量系统在结构典型位置处的自由衰减位移时程测试结果与傅里叶变换后的频谱结果进行吻合度对比,并进一步分析非接触式... 详细信息

基于非接触式精密位移测量系统,对典型直立悬臂结构进行自由振动动力特性标定试验,将激光位移计与非接触式精密位移测量系统在结构典型位置处的自由衰减位移时程测试结果与傅里叶变换后的频谱结果进行吻合度对比,并进一步分析非接触式精密位移测量系统的高频识别适用性、抗噪性能、镜头焦距与测量精度的相关性。试验结果表明,非接触式精密位移测量系统最大采样频率与镜头焦距呈负相关,16 mm焦距镜头仅能实现200 Hz最大采样频率,表明大焦距镜头对于结构高阶频率的识别有一定限制性。在结构自由衰减位移时程大振幅区间,激光位移计与非接触式精密位移测量系统的测量数据吻合度高,小振幅区间下非接触式精密位移测量系统受环境噪声干扰,振幅测量结果呈放大趋势,可通过更换大焦距镜头实现一定程度的抗噪性能,16 mm焦距镜头相较于8 mm焦距镜头在自由振动测试结果小振幅区间可实现70%降噪率效果。风振响应风洞试验中,对于结构低阶频率的识别,视频位移计与加速度计吻合度极高,误差小于1‰。

关键词：非接触式精密位移测量边界层风洞动态位移自由振动动力特性标定

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变电构架钢管避雷针微风振动研究

电瓷避雷器 2021年第2期 162-168页

作者：叶俊辰牛华伟韩军科陈政清湖南大学风工程试验研究中心长沙410082

基于对不同变电构架避雷针结构的有限元建模与模态分析,对比其前十阶振动频率、振型等动力特性。利用Ruscheweyh模型结合欧洲规范对典型带支座避雷针和联合构架避雷针进行微风振动计算分析,得到每阶起振临界风速与横风向最大位移,进一... 详细信息

基于对不同变电构架避雷针结构的有限元建模与模态分析,对比其前十阶振动频率、振型等动力特性。利用Ruscheweyh模型结合欧洲规范对典型带支座避雷针和联合构架避雷针进行微风振动计算分析,得到每阶起振临界风速与横风向最大位移,进一步分析构架避雷针横风向涡激共振的特点。该结果对避免构架避雷针在工作频率范围内发生涡激共振及估算其涡激共振下各阶横风向最大位移有实际意义;对于风致振动下构架避雷针的结构设计、日常维护和加固改造有一定的参考意义。

关键词：变电构架避雷针模态分析微风振动

Effect of cholesterol metabolism on hepatolithiasis

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World Journal of Gastroenterology 2025年第1期31卷 157-162页

作者： Lin Zheng Zi-Yu ye Jun-Ji Ma Department of Gastroenterology The Second Hospital of Hebei Medical UniversityHebei Key Laboratory of GastroenterologyHebei Institute of GastroenterologyHebei Clinical Research Center for Digestive DiseasesNo.215 Heping West RoadShijiazhuang 050000Hebei ProvinceChina

Surgical intervention is currently the primary treatment for hepatolithiasis;how-ever,some patients still experience residual stones and high recurrence rates after *** metabolism seems to play an important role in hepatoli-thiasis pathogenesis.A high cholesterol diet is one of the significant reasons for the increasing incidence of ***,regular diet and appropriate medical intervention are crucial measures to prevent hepatolithiasis and reduce recurrence rate after *** dietary cholesterol and drugs that increase cholesterol stone solubility are key therapeutic approaches in treating *** article discusses the cholesterol metabolic pathways related to the pathogenesis of hepatolithiasis,as well as food intake and targeted therapeutic drugs.

关键词： Hepatolithiasis Cholesterol metabolism High-fat diet 3-hydroxy-3-methylglutaryl-coenzyme A reductase Interlobular bile duct

基于时空大数据的城市地下空间结构安全服役智慧感知与性态演化预测

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中国科学基金 2021年第5期35卷 713-718页

作者：杜彦良杜博文徐飞孙磊磊叶俊辰李林超深圳大学城市智慧交通与安全运维研究院深圳518060 石家庄铁道大学河北省大型结构健康诊断与控制实验室石家庄050043 北京航空航天大学软件开发环境国家重点实验室北京100191

基于时空大数据的城市地下空间结构安全服役智慧感知与性态演化预测,是提升地下工程全生命周期安全保障的重要手段,是基础设施由信息化向智能化发展的基础理论与核心技术。目前,我国地下空间开发迅速,已历经三个发展阶段并逐步形成了网... 详细信息

基于时空大数据的城市地下空间结构安全服役智慧感知与性态演化预测,是提升地下工程全生命周期安全保障的重要手段,是基础设施由信息化向智能化发展的基础理论与核心技术。目前,我国地下空间开发迅速,已历经三个发展阶段并逐步形成了网络化,未来将形成立体化的城市布局。但地下空间结构安全感知与演化预测技术在实际应用中还存在诸多问题,地下空间结构建设与安全运营依然面临诸多挑战。本文立足于地下空间安全管理中的实际问题,分析了现有地下空间结构安全感知与演化预测技术的优缺点以及未来面临的挑战,在深入分析现有地下空间结构安全感知与演化预测技术发展趋势基础上,提出了所面临的关键科学问题,并针对地下空间结构安全感知与演化预测提出了相应的研究思路与对策。

关键词：地下空间结构时空大数据状态感知演化预测

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Three-dimensional fracture of UO2 ceramic pellets by phase field modeling

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 169-180页

作者： Wei Xiong Xuan ye Hongzhang Cheng Xiaoming Liu Institute of Nuclear and New Energy Technology Collaborative Innovation Center of Advanced Nuclear Energy Technology Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Tsinghua University State Key Laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences School of Engineering Science University of Chinese Academy of Sciences

Fracture is the primary failure type for the UO2ceramic pellets,which are operated under irradiation and thermal processes,and physically confined by the *** this work,by combining closely coupled physical processes of heat conduction,heat transfer,and mechanical deformation with the cohesive phase field framework,we proposed a high-precision modeling of quasistatic cracking of three-dimensional （3D） UO2ceramic fuel pellets under high temperature and *** simulation results agree well with the experimental results,indicating that the proposed method has the potential to capture 3D crack modes in the interested time ***,we studied the relation of the 3D fracture patterns of fuel pellets with the peak power *** was found that the power level plays a critical role in determining the competition between radial and circumferential cracks,as well as transverse penetrating cracks.

关键词： phase field method nuclear fuel pellet coupled thermo-mechanical model thermal fracture

Prussian Blue Analogue‑Templated Nanocomposites for Alkali‑Ion Batteries:Progress and Perspective

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Nano-Micro Letters 2025年第1期17卷 216-261页

作者： Jian‑En Zhou Yilin Li Xiaoming Lin Jiaye ye Key Laboratory of Theoretical Chemistry of Environment Ministry of EducationSchool of ChemistrySouth China Normal UniversityGuangzhou 510006People’s Republic of China School of Chemistry and Physics Faculty of ScienceQueensland University of Technology2 George StreetBrisbaneQLD 4000Australia Centre for Materials Science Queensland University of Technology2 George StreetBrisbaneQLD 4000Australia

Lithium-ion batteries(LIBs)have dominated the portable electronic and electrochemical energy markets since their commercialisation,whose high cost and lithium scarcity have prompted the development of other alkali-ion batteries(AIBs)including sodium-ion batteries(SIBs)and potassium-ion batteries(PIBs).Owing to larger ion sizes of Na^(+)and K^(+)compared with Li^(+),nanocomposites with excellent crystallinity orientation and well-developed porosity show unprecedented potential for advanced lithium/sodium/potassium *** enticing open rigid framework structures,Prussian blue analogues(PBAs)remain promising self-sacrificial templates for the preparation of various nanocomposites,whose appeal originates from the well-retained porous structures and exceptional electrochemical activities after thermal *** review focuses on the recent progress of PBA-derived nanocomposites from their fabrication,lithium/sodium/potassium storage mechanism,and applications in AIBs(LIBs,SIBs,and PIBs).To distinguish various PBA derivatives,the working mechanism and applications of PBA-templated metal oxides,metal chalcogenides,metal phosphides,and other nanocomposites are systematically evaluated,facilitating the establishment of a structure–activity correlation for these *** on the fruitful achievements of PBA-derived nanocomposites,perspectives for their future development are envisioned,aiming to narrow down the gap between laboratory study and industrial reality.

关键词： Prussian blue analogues Self-sacrificial template Lithium-ion batteries Sodium-ion batteries Potassium-ion batteries