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MIcROSTRUcTURE AND PROPERTIES OF cucr25 ALLOyS WITH DIFFERENT Ni cONTENT

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Acta Metallurgica Sinica(English Letters) 2003年第2期16卷 151-154页

作者： c.y.Zhang y.P.Wang Z.M.yang B.J.Ding y.L.Li SheyangNationalLaboratoryforMaterialsScience InstituteofMetalResearchTheChineseAcademyofSciencesShenyang110016China SchoolofMaterialsScienceandEngineering Xi‘anJiaotongUniversityXi’an710049China LiaoningElectronTubecorporation Shenyang110023China

cucr25 alloys containing different Ni content were prepared by vacuum induction melting (VIM). The micro structure and properties were tested. The results show that with the increase of Ni content in cucr25 alloys, the cr phase changed from developed dendrite into nodular grains and was drastically refined; the electrical conductivity significantly decrease, but still reach the level of conventional cucr50 when the Ni content is below 0.5%. The Ni content had little influence on their breakdown strength. The first breakdown sites transferred to the boundary of cu and cr phase for cucr25Ni compared to the cr phase for cucr25 without Ni.

关键词： cucr25 contact material vacuum induction melting

基于LabVIEW的拖拉机电气故障诊断系统设计

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农机化研究 2025年第2期47卷 239-243,248页

作者：张扬山西职业技术学院太原030006

设计了一种基于LabVIEW的拖拉机电气故障诊断系统,其采用模块化设计,可以自动检测和诊断拖拉机的电气故障,并提供可视化的诊断结果。系统由数据采集模块、信号处理模块、故障诊断模块和用户界面模块组成。数据采集模块负责采集拖拉机各... 详细信息

设计了一种基于LabVIEW的拖拉机电气故障诊断系统,其采用模块化设计,可以自动检测和诊断拖拉机的电气故障,并提供可视化的诊断结果。系统由数据采集模块、信号处理模块、故障诊断模块和用户界面模块组成。数据采集模块负责采集拖拉机各个部件的电气参数数据,信号处理模块对采集到的数据进行处理和分析,故障诊断模块通过分析处理后的数据来判断拖拉机是否存在故障,并给出相应的诊断结果,用户界面模块提供友好的交互界面。试验结果表明:系统可以准确地诊断拖拉机的电气故障,具有良好的应用前景和推广价值。

关键词：拖拉机电气故障诊断 LabVIEW 数据采集模块化设计

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Optimal sensitivity perturbation analyses on persistent anomalous summer circulation in East Asia

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chinese Science Bulletin 1997年第8期42卷 673-678页

作者： yang, y Ji, LR Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China

THE blocking high over Ural and Okhotsk Sea in mid- and high latitudes and the western Pa-cific subtropical high(SH)are the major components of the East Asian summer monsoon *** persistent anomalies may lead to severe... 详细信息

关键词： adjoint sensitivity analysis optimal sensitivity perturbation persistent anomaly East Asian summer monsoon.

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论黑格尔语言哲学的独特理论个性

武汉大学学报（哲学社会科学版） 2025年第1期78卷 86-96页

作者：杨兴凤广西大学马克思主义学院广西南宁530004

从语言哲学角度去考察黑格尔哲学会动摇一种常见的哲学信念:黑格尔哲学是以语言分析为主阵地的英美哲学所要拒绝的对象。实质上,黑格尔哲学中有着丰富的语言哲学论述,对其特征的阐明能够揭示出其与英美语言哲学传统不同的语言分析进路... 详细信息

从语言哲学角度去考察黑格尔哲学会动摇一种常见的哲学信念:黑格尔哲学是以语言分析为主阵地的英美哲学所要拒绝的对象。实质上,黑格尔哲学中有着丰富的语言哲学论述,对其特征的阐明能够揭示出其与英美语言哲学传统不同的语言分析进路。让·依波利特甚至认为黑格尔把逻辑学建构为一种语言哲学,也有人主张黑格尔是真正实施罗蒂提出的“语言转向”的第一位哲学家。黑格尔引入的辩证法语言具有整体主义与历史主义特征、运动承诺及模糊性与意义转换特征,这使得其语言哲学思想与英美语言哲学进路有着根本的差异。

关键词：黑格尔语言哲学辩证法语言

Effects of dealloying and heat treatment parameters on microstructures of nanoporous Pd

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Journal of Materials Science & Technology 2020年第13期47卷 123-129页

作者： y.Z.chen X.y.Ma W.X.Zhang H.Dong G.B.Shan y.B.cong c.Li c.L.yang F.Liu State Key Lab.of Solidification Processing Northwestern Polytechnical University710072 Xi’anChina

Microstructures of nanoporous Pd are essentially important for its physical and chemical *** this work,we show that the microstructures of nanoporous Pd can be tuned by adjusting compositions of the precursor alloys,and dealloying and heat treatment *** the ligament and pore sizes decrease with increasing the electrochemical potential upon dealloying and the concentration of noble component in the precursor *** treatment causes coarsening of the nanoporous *** a critical temperature,the nanoporous structures are subjected to significant *** the critical temperature,surface diffusion is believed to dominate the coarsening *** the critical temperature,the nanoporous structure coarsens remarkably at a rather high rate,which is ascribed to a multiple-mechanism controlled process.

关键词： Nanoporous metals Microstructure Dealloying Kinetics coarsening

Moment Redistribution Effect of the continuous Glass Fiber Reinforced Polymer-concrete composite Slabs Based on Static Loading Experiment

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Structural Durability & Health Monitoring 2025年第1期19卷 105-123页

作者： Zhao-Jun Zhang Wen-Wei Wang Jing-Shui Zhen Bo-cheng Li De-cheng cai yang-yang Du Hui Huang Offshore Oil Engineering co.Ltd. Tianjin300461China Department of Bridge Engineering School of TransportationSoutheast UniversityNanjing211189China

This study aimed to investigate the moment redistribution in continuous glass fiber reinforced polymer(GFRP)-concrete composite slabs caused by concrete cracking and steel bar yielding in the negative bending moment *** experimental bending moment redistribution test was conducted on continuous GFRP-concrete composite slabs,and a calculation method based on the conjugate beam method was *** composite slabs were formed by combining GFRP profiles with a concrete layer and supported on steel beams to create two-span continuous composite slab *** methods,epoxy resin bonding,and stud connection,were used to connect the composite slabs with the steel *** experimental findings showed that the specimen connected with epoxy resin exhibited two moments redistribution phenomena during the loading process:concrete cracking and steel bar yielding at the internal *** contrast,the composite slab connected with steel beams by studs exhibited only one-moment redistribution phenomenon throughout the loading *** the concrete at the internal support cracked,the bending moment decreased in the internal support section and increased in the midspan *** the steel bars yielded,the bending moment further decreased in the internal support section and increased in the mid-span *** GFRP profiles do not experience cracking,there was no significant decrease in the bending moment of the mid-span *** test specimens experienced compressive failure of concrete at the mid-span *** results showed good agreement between the calculated and experimental values of bending moments in the mid-span section and internal support *** proposed model can effectively predict the moment redistribution behavior of continuous GFRP-concrete composite slabs.

关键词： Moment redistribution GFRP-concrete composite slabs bending moment experimental study analysis model

Mechanism of Primary Frequency Regulation for Battery Hybridization in Hydropower Plant

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cSEE Journal of Power and Energy Systems 2024年第5期10卷 2127-2137页

作者： yiwen Liao Weijia yang Zhecheng Wang yifan Huang c.y.chung State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan UniversityWuhan 430072China Department of Electrical Engineering The Hong Kong Polytechnic UniversityHong KongChina

Battery hybridization in hydropower plants is a hydropower flexibility enhancement technology innovation that can potentially expand hydropower’s contributions to the grid,but its fundamental characteristics and influencing mechanisms are still *** this paper,primary frequency regulation(PFR)performance and the mechanism of this new technology are studied.A battery hybridized hydropower plant(BH-HPP)model,based on a field-measured-data-based hydropower plant(HPP)model and a verified battery simplified model,is *** of system stability and dynamics is undertaken for three different battery control strategies by root locus and participation factor *** to conventional HPPs,analysis results theoretically reveal BH-HPP can not only accelerate system regulation rapidity but also effectively enlarge HPP stability region during PFR *** domain simulation verifies the results and further shows synthetic control has better performance among introduced ***,initial design ranges of control parameters considering battery capacity and a renewable energy source scenario case are also *** work could provide theoretical support for flexibility enhancement solutions for hydropower systems.

关键词： Battery hybridization dynamic response hydropower plant primary frequency regulation stability

Quantified evaluation of particle shape effects from micro-to-macro scales for non-convex grains

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Particuology 2016年第2期14卷 23-35页

作者： y. yang J.F. Wang y.M. cheng Department of civil and Environmental Engineering The Hong Kong Polytechnic University Hong Kong China Department of civil and Architectural Engineering City University of Hong Kong Hong Kong China

Particle shape plays an important role in both the micro and macro scales responses of a granular assem- bly. This paper presents a systematic way to interpret the shape effects of granular material during quasi-static shearing. A more suitable shape descriptor is suggested for the quantitative analysis of the macroscale strength indexes and contact parameters for non-convex grains, with special consid- eration given to the peak state and critical state. Through a series of numerical simulations and related post-processing analysis, particle shape is found to directly influence the strain localisation patterns, microscale fabric distributions, microscale mobilisation indexes, and probability distribution of the nor- malised contact normal force. Additionally, the accuracy of the stress-force-fabric relationship can be influenced by the average normal force and the distribution of contact vectors. Moreover, particle shape plays a more important role than do the confining pressures in determining the friction angle. Strong force chains and the dilation effect are also found to be strongly influenced by the high confinin~ oressure.

关键词： Quantitative analysis Shape factor Statistical analysis Micro-macro indexes

Association of stent thrombectomy and conventional treatment with neuroprotection, complications, anxiety, and depression in acute ischemic stroke patients

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World Journal of Psychiatry 2025年第1期15卷 72-82页

作者： Kai-Jie yang Jia-Jian Huang cai-Xia Xuan Department of Neurology Qinzhou Second People's HospitalQinzhou 535000Guangxi Zhuang Autonomous RegionChina

BAcKGROUND Acute ischemic stroke(AIS)is an abrupt blood flow cessation to a specific brain region within a vascular zone,causing a subsequent decline in neurological *** thrombectomy is a recently established technique for treating *** provides the benefits of being a relatively simple and safe procedure,capable of partially enhancing a patient’s ***,some patients may experience endothelial damage and recurrent thrombosis,with clinical outcomes that are not always ***,the efficacy of this method remains *** To survey the association of stent thrombectomy vs standard treatment with neurological function protection,complications,and short-term prognosis in patients diagnosed with *** This study assigned 90 patients with AIS to the observation and control groups(n=45 patients)from December 2020 to December *** thrombectomy was conducted in the observation group,whereas routine treatment was provided to the control *** study assessed the therapeutic outcomes of two groups,including a comparison of their neurological function,living ability,anxiety and depression status,plaque area,serum inflammatory factors,serum Smur100βprotein,neuron-specific enolase(NSE),homocysteine(Hcy),and vascular endo-thelial ***,the incidence of complications was calculated and analyzed for each *** The total effective rate of treatment was 77.78%and 95.56%in the control and observation groups,*** 8 weeks of treatment,the scores on the National Institutes of Health Stroke Scale,Hamilton Anxiety Scale,and Hamilton Depression Scale decreased remarkably;the Barthel index increased remarkably,with better improvement effects of the scores in the observation group(Pcholesterol,triglyceride,c-reactive protein,and plaque area lessened remarkably,with fewer patients in the observation group(Pcy levels lessened remarkably,with fewer patients in

关键词： Stent thrombectomy Acute ischemic stroke Neurological function complications Short-term prognosis