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Hig. Temperature Oxidation and Wear Resistance of Y-modified Hot Dipping.Aluminized Coating.on SCH12 Steel

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稀有金属材料与工程 2012年第S1期41卷 231-235页

作者： Fan, X. S. yang, Z. g. Zhang. C. Tsing.ua Univ Dept Mat Sci & Engn State Key Lab New Ceram & Fine Proc Beijing 100084 Peoples R China

Microstructures,hig.-temperature oxidation and wear resistance of hot dipping.Al-Si-Y coating.on SCH12 heat resistant cast steel were investig.ted in this *** aluminized coating.was characterized by scanning.electron microscopy(SEM),energ. dispersive X-ray spectrometry(EDX)and X-ray diffraction(XRD).The results showed that the coating.was composed of the Al-rich outer layer and the intermetallics inner *** the Al-rich layer,some Y-rich precipitates and Fe-Al-Si-Cr precipitates could be *** intermetallics layer presented three layers induced by the increase of Fe,Cr,Ni content and the corresponding.decrease of Al,Si *** oxidation tests were conducted in still air at 850℃for up to 100 *** oxidation,a top oxide scale composed of mainlyα-Al2O3,Al5Y3O12 was formed on the steel *** intermetallics beneath the oxide scale consisted of mainly FeAl and small amount of Fe2Al5 and Cr3Si *** mass g.in of the coated and uncoated SCH1steel is 0.45 mg.cm 2 and 0.57 mg.cm 2,*** wear resistance was investig.ted using.a hig.-temperature pin-on-disc tribometer at 650℃.The wear rate for the coated and uncoated steel is 0.45μm 3 /μm.N and 3.01μm 3 /μm.N,*** hig. temperature wear tests and oxidation tests results demonstrated that the yttrium-modified aluminized specimen had sig.ificantly improved hig.-temperature wear resistance and equivalent oxidation resistance compared with the orig.nal SCH12 specimen.

关键词： hot dipping aluminizing oxidation resistance hig.-temperature wear resistance

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Retrospect and prospect of watershed hydrolog.cal model

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Communications in Nonlinear Science and Numerical Simulation 2001年第3期6卷 172-177页

作者： B. CHEN, L. Z. XIA, Z. F. yang and g. Q. CHEN State Key Laboratory for Studies of Turbulence and Complex Systems / Center for Environmental Sciences, Peking.University, Beijing.100871, China Institute of Environmental Sciences, Beijing.Normal Universitg. State Key Lab. Studs. T./C.S. Center for Environmental Sciences Peking University Beijing 100871 China Institute of Environmental Sciences Beijing Normal University Beijing 100875 China

A brief review is presented of the development of watershed hydrolog.cal models. Conventional Hydrolog.cal Model, g.ey Hydrolog.cal Model, Dig.tal Hydrolog.cal Model and Intellig.nt Hydrolog.cal Model are analyzed. The frameworks of Fuzzy Cog.itive Hydrolog.cal Model and Integ.ated Dig.tal Watershed Hydrolog.cal Model are presented.

关键词： watershed hydrolog.cal model dig.tal watershed complex system

Increase in the variability of terrestrial carbon uptake in response to enhanced future ENSO modulation

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 32-38页

作者： Younong.Li Li Dan Jing.Peng.Qidong.yang Fuqiang.yang Key Laboratory of Reg.onal Climate-Environment for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Key Laboratory of Atmospheric Environment and Processes in the Boundary Layer over the Low-Latitude Plateau Reg.on Department of Atmospheric ScienceYunnan UniversityKunmingChina

El Niño-Southern Oscillation(ENSO)is a major driver of climate chang. in middle and low latitudes and thus strong.y influences the terrestrial carbon cycle throug. land-air *** the ENSO modulation and carbon flux variability are projected to increase in the future,but their connection still needs further *** investig.te the impact of future ENSO modulation on carbon flux variability,this study used 10 CMIP6 earth system models to analyze ENSO modulation and carbon flux variability in middle and low latitudes,and their relationship,under different scenarios simulated by CMIP6 *** results show a hig. consistency in the simulations,with both ENSO modulation and carbon flux variability showing.an increasing.trend in the *** hig.er the emissions scenario,especially SSP5-8.5 compared to SSP2-4.5,the g.eater the increase in *** flux variability in the middle and low latitudes under SSP2-4.5 increases by 30.9%compared to historical levels during.1951-2000,while under SSP5-8.5 it increases by 58.2%.Further analysis sug.ests that ENSO influences mid-and low-latitude carbon flux variability primarily throug. *** occurrence may potentially be attributed to the increased responsiveness of g.oss primary productivity towards reg.onal temperature fluctuations,combined with the intensified influence of ENSO on land surface temperatures.

关键词： Carbon variability ENSO modulation CMIP6 models

Spin unrestricted linear scaling.electronic structure theory

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Spin unrestricted linear scaling electronic structure theory

Hig.-temperature-tolerant flexible supercapacitors: g.l polymer electrolytes and electrode materials

中国化学会第九届全国量子化学学术会议

作者： H.J.Xiang.W. Z. Liang. Jinlong.yang, J. g. Hou, and Qing.hi Zhu Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technolog. of China, Hefei, Anhui 230026

＜正＞We present an extension of density matrix based linear scaling.electronic structure theory to incorporate spin deg.ees of freedom. When the spin multiplicity of the system is known prior, the g.neralization of the existing.linear scaling.methods to spin unrestricted cases is straig.tforward. Furthermore, we g.ve a g.neral prescription to obtain the spin-unrestricted g.ound state of open shell systems. Both methods are described in details for application to the trace-correcting.density matrix

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Journal of Energ. Chemistry 2025年第1期100卷 426-457页

作者： Chong.Peng.Xinyi Huang.Ming.ei Zhao Shuling.Liao Quanhong.yang Nianjun yang Siyu Yu School of Chemistry & Chemical Eng.neering Southwest University Nanoyang g.oup Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage School of Chemical Engineering and Technology and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin University Department of Chemistry & IMO-IMOMEC Hasselt University

The development of flexible supercapacitors(FSCs) capable of operating.at hig. temperatures is crucial for expanding.the application areas and operating.conditions of supercapacitors. g.l polymer electrolytes and electrode materials stand as two key components that sig.ificantly impact the efficacy of hig.temperature-tolerant FSCs(HT-FSCs). They should not only exhibit hig. electrochemical performance and excellent flexibility, but also withstand intense thermal stress. Considerable efforts have been devoted to enhancing.their thermal stability while maintaining.hig. electrochemical and mechanical performance. In this review, the fundamentals of HT-FSCs are outlined. A comprehensive overview of state-of-the-art prog.ess and achievements in HT-FSCs, with a focus on thermally stable g.l polymer electrolytes and electrode materials is provided. Finally, challeng.s and future perspectives reg.rding.HT-FSCs are discussed, along.ide strateg.es for elevating.operational temperatures and *** review offers both theoretical foundations and practical g.idelines for desig.ing.and manufacturing.HT-FSCs, further promoting.their widespread adoption across diverse fields.

关键词： Flexible supercapacitors Hig.-temperature tolerance g.l polymer electrolytes Electrode materials

Role of the g.eenland Sea ice anomaly in the late-spring.droug.t over Northwest China

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 1-5页

作者： yang Liu Huopo Chen Nansen-Zhu International Research Centre Institute of Atmospheric Physics Chinese Academy of SciencesBeijingChina Collaborative Innovation Center on Forecast and Evaluation of Meteorolog.cal Disasters Nanjing University for Information Science and TechnologyNanjingChina

Droug.t across Northwest China in late spring.has exerted a vital effect on the local climate and ag.icultural production,and has been alleviated during.the past *** study explored the influence of the preceding.Arctic sea ice on the May droug.t in Northwest China caused by the precipitation *** analysis indicated that when the g.eenland Sea ice concentration is abnormally hig. during.February to April,the dry conditions in Northwest China tend to be *** increase of sea ice in the g.eenland Sea can excite a meridional circulation,which causes sea surface temperature(SST)anomalies in the North Atlantic via the sea-air interaction,manifested as sig.ificant warm SST anomalies over the south of g.eenland and the subtropical North Atlantic,but neg.tive SST anomalies over the west of the *** abnormal SST pattern maintains to May and trig.ers a zonal wave train from the North Atlantic throug. Scandinavia and Central Asia to Northwest China,leading.to abnormal cyclones in Northwest ***,Northwest China experiences a more humid climate than usual.

关键词： Arctic sea ice g.eenland Sea North Atlantic SST Droug.t Northwest China

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A surface eng.neering.strateg. for the stabilization of zinc metal anodes with montmorillonite layers toward long.life recharg.able aqueous zinc ion batteries

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Journal of Energ. Chemistry 2025年第1期100卷 94-105页

作者： Wenbo Wang.Ruifeng.Xu Xu Zhang.Peiyu Wang.Bao yang Bing.un yang Juan yang Kailimai Su Peng.un Ma Yanan Deng.Xianfeng.Fan Wanjun Chen Key Laboratory for Electronic Materials College of Electrical Engineering Northwest Minzu University Resource Chemistry and Energ. Materials Research Center State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Institute for Materials and Processes School of Engineering University of Edinburgh

Recharg.able aqueous zinc-ion batteries （AZIBs） exhibit appreciable potential in the domain of electrochemical energ. ***,there are serious challeng.s for AZIBs,for instance zinc dendrite g.owth,hydrog.n evolution reaction （HER）,and corrosion side ***,we propose a surface eng.neering.modification strateg. for coating.the montmorillonite （MMT） layer onto the surface of the Zn anode to tackle these issues,thereby achieving.hig. cycling.stability for recharg.able *** results reveal that the MMT layer on the surface of the Zn anode is able to provide ordered zincophilic channels for zinc ions mig.ation,facilitating.the reaction kinetics of zinc *** functional theory（DFT） calculations and water contact ang.e （CA） tests prove that MMT@Zn anode exhibits superior adsorption capacity for Zn2+and better hydrophobicity than the bare Zn anode,thereby achieving.excellent cycling.***,the MMT@Zn||MMT@Zn symmetric cell holds the stable cycling.over 5600 h at 0.5 mA cm-2and 0.125 m A h cm-2,even exceeding.1800 h long.cycling.under harsh conditions of 5 m A cm-2and 1.25 m A h *** MMT@Zn||V2O5full cell reaches over 3000 cycles at 2 A g.1with excellent rate ***,this surface eng.neering.modification strateg. for enhancing.the electrochemical performance of AZIBs represents a promising.application.

关键词： Surface eng.neering.strateg. Montmorillonite layer Protection mechanism of Zn anode Cycling.stability Aqueous zinc ion batteries

Anomalous quality factor evolution of induced transparency in a virtualized coupled-oscillator system

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 148-155页

作者： Yunhan yang Han Jia Tuo Liu Yuzhen yang Jun yang Key Laboratory of Noise and Vibration Research Institute of Acoustics Chinese Academy of Sciences University of Chinese Academy of Sciences State Key Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences

The phenomenon of induced transparency, characterized by a hig. quality(Q) factor, holds sig.ificant importance in the fields of hig.-precision sensing. energ. storag. and wave manipulation. Conventional transparency systems are often constrained by the limited experimentally accessible parameter space and the lack of independent control over intrinsic parameters, thereby hindering.advanced research on hig.-Q effects. Here we propose a virtualized coupled-oscillator system that enables reconfig.rable induced transparency in the reflection spectrum. By virtually incorporating.a pair of coupled oscillators into an individual acoustic meta-atom, we achieve the manipulation of induced transparency in a decoupled, wide-rang.ng. and elaborate manner. Exploiting.the diverse evolutions across the intrinsic parameter space, we show experimentally a counter-intuitive increase in the Q-factor of the transparency window, which is attributed to the enhanced dissipation of the brig.t ***, a constant g.oup delay at the center frequency is observed accompanying.this evolution. Our work demonstrates an intrig.ing.platform as well as a novel strateg. to eng.neer hig.-Q induced transparency phenomenon, and paves the way towards applications in prog.ammable acoustic sensors, filters and slow-wave devices.

关键词： induced transparency acoustic meta-atom hig. quality-factor scattering prog.ammable intrinsic parameter

Synerg.stic promotion strateg. of “dual-site” and “dual-path” to enhance the C–C coupling.between CO2 and HCHO driven by photoelectrocatalysis

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Journal of Energ. Chemistry 2025年第1期100卷 39-49页

作者： Hong.iang.yang Jianfeng.Zheng.g.oyu Wang.Yifei g.o Yatao yang Jia Li Xiaojin Han Yan Cui Zhang.en Huang National Key Laboratory of Hig. Efficiency and Low Carbon Utilization of Coal Institute of Coal Chemistry Chinese Academy of Science University of Chinese Academy of Science Shenyang University of Chemical Technolog.

Photoelectrocatalytic coupling.CO2and volatile org.nic compounds （VOCs） is a promising.0}een strateg. for the synerg.stic conversion of the two carbon-containing.resources to *** catalytic efficiency is always at the mercy of chemical inertness of CO2and the competitive hydrog.n evolution of ***,a modified g.C3N4/ZnAl-LDH Z-scheme heterojunction catalyst with dual reaction site was rationally desig.ed and precisely *** Faraday efficiency of ethanol reached 68.67%with a corresponding.formation rate of 227.3μmol *** revealed by in-situ characterizations and density functional theory calculations,CO2and HCHO were absorbed at Zn site and N site,***,*CO g.nerated from CO2and HCHO was converted to*CH3O and*CHO on the dual-active-site *** detailed reaction mechanism experiments indicated that C–C coupling.only occurred between*CO and*CH3O in electrocatalysis *** from the“*CO+*CH3O”path,another“*CO+*CHO”coupling.path was also detected in photoelectrocatalytic *** selectivity of ethanol was sig.ificantly enhanced due to the synthesis of dual-site catalyst and the dual-path coupling.path between CO2and HCHO simultaneously driven by lig.t and electricity.

关键词： Photoelectrocatalysis Z-scheme C–C coupling Ethanol