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Experimental Study and a Modified Model for Temperature-Recovery Stress of Shape Memory Alloy Wire under Different Temperatures

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Structural Durability & Health Monitoring 2025年第2期19卷 347-364页

作者： Zhi-Xiang wei Wen-wei Wang Yan-jie Xue Wu-Tong ZhangQiu-Di Huang Guangxi Lepu Expressway Co. Ltd.Nanning530000China Department of Bridge Engineering School of TransportationSoutheast UniversityNanjing211189China Department of Road and Bridge Engineering College of Construction EngineeringJilin UniversityChangchun130012China

To investigate the performance of utilizing the shape memory effect of SMA(Shape Memory Alloy)wire to generate recovery stress,this paper performed single heating recovery stress tests and reciprocating heating-cooling recovery stress tests on SMA wire under varying initial strain *** effects of various strains and different energized heating methods on the recovery stress of SMA wires were explored in the single heating *** SMA wire was strained from 2%to 8%initially,and two distinct heating approaches were employed:one using a large current interval for rapid heating and one using a small current interval for slower *** experimental outcomes reveal that during a single heating cycle,the temperature-recovery stress relationship of SMA wire exhibits three distinct stages:the martensite phase stage,the transition stage from martensite to austenite phase,and the austenite phase ***,the choice of heating method does not influence the maximum recovery stress value,and the correlation between initial strain and maximum recovery stress is predominantly ***,conducting the reciprocating temperature rise and fall performance test is important to better simulate the scenario in practical engineering where multiple recovery stress in SMA wires for structural *** this test,two temperature cycling methods were studied:interval rise and fall,as well as direct rise and *** the case of utilizing the interval temperature rise and fall method,it was observed that the recovery stress associated with cooling was significantly higher than that corresponding to heating at the same ***,the recovery stress was lower upon subsequent heating than that measured during the previous heating *** on the experimental results,a prediction model for the temperature-recovery stress relationship has been proposed to simplify numerical *** is hoped that an approximate temperaturerecovery stress curve can be

关键词： SMA wire temperature recovery stress modified model phase transition

Carbody sway behaviour of railway vehicles due to track irregularity from rail alternate side wear

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Railway Engineering Science 2025年第1期33卷 27-42页

作者： Lai wei Jing Zeng Ren Luo Feng Gan Jijun gong Jun Jiang State Key Laboratory of Rail Transit Vehicle System Southwest Jiaotong UniversityChengdu 610031China China Railway Materials Operation and Maintenance Technology Co.Ltd. Beijing 100071China

Track irregularity from rail alternate side wear is manifested as uneven rail wear waveforms alternating in the left and right rails with equal intervals,which will cause carbody sway behaviour of railway vehicles and greatly influences the passenger *** this work,the carbody sway behaviour and mechanism due to track irregularity from rail alternate side wear and possible solutions to this issue were studied by the field testing and numerical calculation ***,the carbody sway of an urban rail transit train is introduced with full-scale field tests,through which the rail alternate side wear is characterized and the formatted track irregularity are ***,multibody vehicle dynamic models are developed to reproduce the carbody sway behaviour induced by the track irregularity from the rail alternate side *** creep forces acting on the wheel and rail are preliminarily discussed to study the influence of the carbody sway on the wear of the wheel flange and the rail ***,some potential solutions,*** the damping ratio of carbody rigid mode and rail grinding,are proposed to relieve this *** is concluded that an increased damping ratio of the carbody mode can alleviate the carbody sway and wheel–rail interactions,while properly maintaining track conditions can improve the vehicle performance.

关键词： Carbody sway Track irregularity Rail wear Creep force Carbody mode

Desymmetrized pillar[8]arenes:High-yield synthesis,functionalization,and host-guest chemistry

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Chinese Chemical Letters 2025年第1期36卷 288-292页

作者： jie Yang Xin-Yue Lou Dihua Dai Jingwei Shi Ying-wei Yang College of Chemistry Jilin UniversityChangchun 130012China School of Life Sciences Jilin UniversityChangchun 130012China Department of Laboratory Medicine Center China-Japan Union Hospital of Jilin UniversityChangchun 130033China

The preparation,functionalization,and investigations in host-guest properties of high-level pillararene macrocycles have long been a big challenge because of the lack of efficient synthetic ***,a novel type of pillararene derivative,namely desymmetrized pillar[8]arene(DP[8]A),has been successfully synthesized via a facile two-step strategy with high *** with its pillar[8]arene counterpart,DP[8]A is composed of four alkoxy-substituted benzene units and four bare benzene *** crystal analysis has been performed in order to unveil the molecular conformation and packing mode of DP[8]A,which indicated that DP[8]A possesses a unique chair-like structure and much smaller steric *** functional theory(DFT)calculations and electrostatic potential map suggested the inhomogeneous electronic distribution in the DP[8]A ***-soluble carboxylate-modified DP[8]A,that is,CDP[8]A,was also prepared to investigate the host-guest properties in aqueous solution with methyl viologen(MV),where the binding constant and morphologies of the formed host-guest complexes have been *** all,this new version of eight-membered pillararene derivative might potentially serve as a powerful macrocycle candidate for further applications in supramolecular chemistry.

关键词： Host-guest interaction Macrocycle chemistry Pillararenes Supramolecular chemistry Synthetic macrocycles

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太阳能热水地板采暖系统稳态换热过程的研究

太阳能学报 1989年第4期10卷 342-350页

作者：郑维杰龚堡何梓年北京市太阳能研究所

本文以太阳能热水地板采暖系统为研究对象,对地板和房间做了综合换热分析,建立了系统的数学模型,并利用计算机进行数值求解。实验证明,本文建立的数学模型基本正确,提出的计算程序可以模拟此系统的换热过程,对不同情况下的系统设计和运... 详细信息

本文以太阳能热水地板采暖系统为研究对象,对地板和房间做了综合换热分析,建立了系统的数学模型,并利用计算机进行数值求解。实验证明,本文建立的数学模型基本正确,提出的计算程序可以模拟此系统的换热过程,对不同情况下的系统设计和运行具有指导意义。

关键词：太阳能热水地板采暖系统换热

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Recent progress on photoactive nonprecious transition-metal complexes

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Science China Chemistry 2025年第1期68卷 46-95页

作者： Zhong-Liang gong Hong-jie Zhang Yan Cheng Jianxun Liu Yuhan Ai Yaqin Li Zhihui Feng Qiong Zhang Shaolong gong Yong Chen Chang-Jiang Yao Yuan-Yuan Zhu Liang-Jin Xu Yu-Wu Zhong CAS Key Laboratory of Photochemistry Institute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory of Structural Cemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China School of Chemistry and Chemical Engineering Anhui Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringHefei University of TechnologyHefei 230009China State Key Laboratory of Explosion Science and Safety Protection School of Mechatronical EngineeringBeijing Institute of TechnologyBeijing 100081China College of Chemistry and Molecular Sciences Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan 430072China School of Chemistry and Chemical Engineering Anhui UniversityHefei 230601China Key Laboratory of Photochemical Conversion and Optoelectronic Materials&CAS-HKU Joint Laboratory on New Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China

Photoactive complexes of nonprecious transition metals,mainly including those in the first-row and partially the second-row of the Periodic table of elements,have received increasing attention in view of their low cost and long-term *** are recognized as promising alternatives to noble transition metal complex congeners that have been extensively studied in optoelectronic devices,artificial photosynthesis,photocatalysis,biodiagnostics,and therapeutics,*** review is devoted to a comprehensive summary on the classical and recent advances on photoactive nonprecious transition metal complexes,including photoactive Zr,V,Cr,Mo,and W complexes,Mn complexes and hybrids,Fe,Co,Ni,and Cu complexes,and Zn and Cd complexes and hybrids.A particular focus is given on the molecular design,modulation of photophysical and photochemical properties,and applications of the representative and lately-developed nonprecious metal *** addition,a perspective on the future development in this field is provided at the end of this review.

关键词： photoactive metal complexes earth-abundant metals nonprecious metal complexes luminescence photochemistry

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Impact of Individuals’ Fitness Expressions on Interactive Genetic Algorithms’ Performances

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Impact of Individuals’ Fitness Expressions on Interactive G...

Surface modification of fabrics using dielectric barrier discharge plasma for improved antifouling performance

2009中国控制与决策会议

作者： Dun-wei gong,jie Yuan School of Information and Electrical Engineering,China University of Mining and Technology,Xuzhou 221116,China

＜正＞Interactive genetic algorithms involve a user to evaluate an individual’s *** far,there have been many expressions of an individual’s fitness,but no mature result of their influences onlGAs’ performances has come *** review 5 representative fitness expressions in this paper,*** fitness,discrete fitness,interval fitness,fuzzy fitness,as well as the fitness not directly assigned by the *** a RGB color evolutionary system to collect data and based on many statistical methods,we analyze the impact of the above fitness expressions on interactive genetic algorithms’ performances in detail,and make a research on the user’s satisfaction *** achievements in this paper provide a foundation for choosing an appropriate fitness expression in real-world applications.

关键词： Genetic algorithm Interactive genetic algorithm Fitness Expression

来源： cnki会议评论

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Plasma Science and Technology 2025年第1期27卷 7-16页

作者： Jian SHEN Fajun WANG wei wei jie MA Junjie WANG Liangliang LIN School of Materials and Chemical Engineering Ningbo University of TechnologyNingbo 315211People’s Republic of China Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122People’s Republic of China Mount Taishan Institute of Science and Technology Tai’an 271000People’s Republic of China

Surface modification of fabrics is an effective way to endow them with antifouling properties while still maintaining their key advantages such as comfort,softness and ***,an atmospheric pressure dielectric barrier discharge(DBD)plasma method is demonstrated for the processing of silk fabrics using 1H,1H,2H,2H-perfluorodecyltriethoxysilane(PFDS)as the *** results showed the successful grafting of PFDS groups onto the surface of silk fabrics without causing ***,the gas temperature is rather low during the whole processing procedure,suggesting the non-equilibrium characteristics of DBD *** influence on fabrics of the processing parameters(PFDS concentration,plasma treatment time and plasma discharge power)was systematically *** optimum processing condition was determined to be a PFDS concentration of 8wt%,a plasma processing time of 40 s and a plasma power of 11.87 ***,with prolonged plasma processing time or enhanced plasma power,the plasma-grafted PFDS films could be *** study revealed that plasma processing of silk fabrics with PFDS would lead to a change in their chemical composition and surface *** a result,the surface energy of the fabrics was reduced,accompanied by improved water and oil repellency as well as enhanced antifouling ***,the plasma-grafted PFDS films also had good durability and *** extending the method to polyester and wool against different oil-/water-based stains,the DBD plasma surface modification technique demonstrated good versatility in improving the antifouling properties of *** work provides guidance for the surface modification of fabrics using DBD plasma to confer them with desirable functionalities.

关键词： DBD plasma plasma surface modification silk fabrics water and oil repellency antifouling property

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A C-type lectin with dual carbohydrate recognition domains functions in innate immune response in Asian corn borer,Ostrinia furnacalis

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Insect Science 2025年第1期32卷 172-192页

作者： Er-Tao Li Jia-Yue Ji wei-jie Kong Dong-Xu Shen Cai Li Chun-Ju An Deparment of Entomology College of Plant ProtectionChina Agricultural UniversityBejingChina Pomology Institute Shanxi Agricultural UniversityJinzhongShanxi ProvinceChina Jiangsu Key Laboratory of Sericultural Biology and Biotechnology School of BiotechnologyJiangsu University of Science and TechnologyZhenjiangJiangsu ProvinceChina

C-type lectins(CTLs)act as pattern recognition receptors(PRRs)to initiate the innate immune response in insects.A CTL with dual carbohydrate recognition domains(CRDs)(named immulectin-4[IML-4])was selected from the Ostrinia furnacalis transcriptome dataset for functional *** cloned the full-length complementary DNA of *** IML-4(OfIML-4).It encodes a 328-residue protein with a Glu-Pro-Asn(EPN)and Gln-Pro-Asp(QPD)motifs in 2 CRDs,***-4 messenger RNA levels increased significantly upon the bacterial and fungal *** OfIML-4(rIML-4)and its individual CRDs(rCRD1 and rCRD2)exhibited the binding ability to various microorganisms including Escherichia coli,Micrococcus luteus,Pichia pastoris,and Beauveria bassiana,and the cell wall components including lipopolysaccharide from ***,peptidoglycan from *** or Bacillus subtilis,and curdlan from Alcaligenes *** binding further induced the agglutination of ***,***,and *** in the presence of calcium,the phagocytosis of Staphylococcus aureus by the hemocytes,in vitro encapsulation and melanization of nickel-nitrilotriacetic acid beads,and a significant increase in phenoloxidase activity of *** addition,rIML-4 significantly enhanced the phagocytosis,nodulation,and resistance of *** to *** together,our results suggest that OfIML-4 potentially works as a PRR to recognize the invading microorganisms,and functions in the innate immune response in ***.

关键词： cellular immunity C-type lectin humoral immunity immulectin Ostrinia furnacalis pattern recognition receptor(PRR)

Achievable dual-strategy to stabilize Li-rich layered oxide interface by a one-step wet chemical reaction towards long oxygen redox reversibility

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Journal of Energy Chemistry 2025年第2期101卷 120-131页

作者： Bin He Yujie Dai Shuai Jiang Dawei Chen Xilong Wang jie Song Dan Xiao Qian Zhao Yan Meng wei Feng School of Mechanical Engineering Chengdu University Chongqing Institute of Metrology and Quality Inspection Institute of New Energy and Low-Carbon Technology Sichuan University

Oxygen release and electrolyte decomposition under high voltage endlessly exacerbate interfacial ramifications and structu ral degradation of high energy-density Li-rich layered oxide（LLO）,leading to voltage and capacity ***,the dual-strategy of Cr,B complex coating and local gradient doping is simultaneously achieved on LLO surface by a one-step wet chemical reaction at room *** functional theory（DFT） calculations prove that stable B-O and Cr-O bonds through the local gradient doping can significantly reduce the high-energy O 2p states of interfacial lattice O,which is also effective for the near-surface lattice O,thus greatly stabilizing the LLO surface,Besides,differential electrochemical mass spectrometry（DEMS） indicates that the CrxB complex coating can adequately inhibit oxygen release and prevents the migration or dissolution of transition metal ions,including allowing speedy Li+migration,The voltage and capacity fading of the modified cathode（LLO-CrB） are adequately suppressed,which are benefited from the uniformly dense cathode electrolyte interface（CEI） composed of balanced organic/inorganic ***,the specific capacity of LLO-CrB after 200 cycles at 1C is 209.3 mA h g-1（with a retention rate of 95.1%）.This dual-strategy through a one-step wet chemical reaction is expected to be applied in the design and development of other anionic redox cathode materials.

关键词： Interfacial oxygen Lithium-rich layered oxide cathode Local gradient doping One-step wet chemical reaction Surface coating