检索结果-南通市图书馆

INVESTIGATION OF ThE LOW-cYcLE FATIGUE AND FATIGUE cRAcK GROWTh BEhAVIORS OF P91 BASE METAL AND WELD JOINTS

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2004年第4期17卷 597-600页

作者： h.c.yang Y.Tu M.M.Yu J.Zhao Dongfang Boiler (Group) Ltd Zigong 643001 ChinaDongfang Boiler (Group) Ltd Zigong 643001 ChinaDongfang Boiler (Group) Ltd Zigong 643001 ChinaDepartment of Materials Engineering Dalian University of Technology Dalian 116023 China

Low cycle fatigue tests and crack growth propagations tests on P91 pipe base metal and its weld joints were conducted at three different temperatures: room temperature, 550℃ and 575℃. The strain-life was analyzed, and the changes in fatigue life behavior and fatigue growth rates with increasing temperature were discussed. The different properties of the base metal and its weld joint have been analyzed.

关键词： P91 pipe low-cycle fatigue fatigue crack growth

STUDY OF TcP PhASE PREcIPITATING IN Gh4199 SUPERALLOY

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2004年第5期17卷 645-650页

作者： T.cui Y.S.Zhang S.W.Guo L.Wang h.c.yang SchoolofMaterialsandMetallurgy NortheasternUniversityShenyang110004ChinaManuscriptreceived15July2003 inrevisedform19January2004

The precipitating regulation and mechanism of TcP phase (μ phase and σ phase) are studied, using electron hole number (EhN) theory, phase analysis technology and TEM observation. The results indicate that the EhN in studied alloy is 2.311-2.348 which is higher than that of critical EhN of μ phase precipitate (2.30), so μ phase could precipitate if there is enough thermo-exposition. In contrast, the calculated EhN is less than that of critical EhN of σ phase precipitate (2.52). however the σ phase is also observed by TEM. Enrich of cr and Mo around γ phase after γ′phase precipitated leads to σ phase precipitated.

关键词： superalloy TcP phase electron hole number

在线全文

学校读者我要写书评

暂无评论

700种主要有机化合物的蒸汽压数据

化工厂设计 1990年第4期10卷 42-59页

作者： c.L.Yaws h.c.yang 史新辉

本文给出了大约700个主要有机化合物的蒸汽压关联式及关联式系数。蒸汽压是温度的函数。同时表中也列出了其所适用温度范围的最高和最低温度。

关键词：有机化合物蒸汽压

在线全文

学校读者我要写书评

暂无评论

估算蒸汽压力的简易方法

聚氯乙烯 1990年第5期18卷 41-59页

作者： c.L.Yaws h.c.yang 李光辉莱马尔大学锦西化工研究院

近700种主要有机化合物的蒸汽压力与温度的Antoine系数。表1中列出了近700种有机化合物的蒸汽压力与温度的函数关系,并给出了数据适用的温度范围,以T_(最小)小及T_(最大)表示最小及最大温度。

关键词：蒸汽蒸汽压力有机化合物

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

在线全文

学校读者我要写书评

暂无评论

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 Regional 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 Region Department of Atmospheric ScienceYunnan UniversityKunmingChina

El Niño-Southern Oscillation(ENSO)is a major driver of climate change in middle and low latitudes and thus strongly influences the terrestrial carbon cycle through land-air *** the ENSO modulation and carbon flux variability are projected to increase in the future,but their connection still needs further *** investigate 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 high consistency in the simulations,with both ENSO modulation and carbon flux variability showing an increasing trend in the *** higher the emissions scenario,especially SSP5-8.5 compared to SSP2-4.5,the greater 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 suggests that ENSO influences mid-and low-latitude carbon flux variability primarily through *** occurrence may potentially be attributed to the increased responsiveness of gross primary productivity towards regional temperature fluctuations,combined with the intensified influence of ENSO on land surface temperatures.

关键词： carbon variability ENSO modulation cMIP6 models

high-temperature-tolerant flexible supercapacitors: Gel polymer electrolytes and electrode materials

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy chemistry 2025年第1期100卷 426-457页

作者： chong Peng Xinyi huang Mingwei Zhao Shuling Liao Quanhong yang Nianjun yang Siyu Yu School of chemistry & chemical Engineering Southwest University Nanoyang Group 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 high temperatures is crucial for expanding the application areas and operating conditions of supercapacitors. Gel polymer electrolytes and electrode materials stand as two key components that significantly impact the efficacy of hightemperature-tolerant FScs(hT-FScs). They should not only exhibit high electrochemical performance and excellent flexibility, but also withstand intense thermal stress. considerable efforts have been devoted to enhancing their thermal stability while maintaining high electrochemical and mechanical performance. In this review, the fundamentals of hT-FScs are outlined. A comprehensive overview of state-of-the-art progress and achievements in hT-FScs, with a focus on thermally stable gel polymer electrolytes and electrode materials is provided. Finally, challenges and future perspectives regarding hT-FScs are discussed, alongside strategies for elevating operational temperatures and *** review offers both theoretical foundations and practical guidelines for designing and manufacturing hT-FScs, further promoting their widespread adoption across diverse fields.

关键词： Flexible supercapacitors high-temperature tolerance Gel polymer electrolytes Electrode materials

Role of the Greenland Sea ice anomaly in the late-spring drought over Northwest china

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

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 Meteorological Disasters Nanjing University for Information Science and TechnologyNanjingChina

Drought across Northwest china in late spring has exerted a vital effect on the local climate and agricultural production,and has been alleviated during the past *** study explored the influence of the preceding Arctic sea ice on the May drought in Northwest china caused by the precipitation *** analysis indicated that when the Greenland Sea ice concentration is abnormally high during February to April,the dry conditions in Northwest china tend to be *** increase of sea ice in the Greenland Sea can excite a meridional circulation,which causes sea surface temperature(SST)anomalies in the North Atlantic via the sea-air interaction,manifested as significant warm SST anomalies over the south of Greenland and the subtropical North Atlantic,but negative SST anomalies over the west of the *** abnormal SST pattern maintains to May and triggers a zonal wave train from the North Atlantic through 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 Greenland Sea North Atlantic SST Drought Northwest china

A surface engineering strategy for the stabilization of zinc metal anodes with montmorillonite layers toward long-life rechargeable aqueous zinc ion batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy chemistry 2025年第1期100卷 94-105页

作者： Wenbo Wang Ruifeng Xu Xu Zhang Peiyu Wang Bao yang Bingjun yang Juan yang Kailimai Su Pengjun Ma Yanan Deng Xianfeng Fan Wanjun chen Key Laboratory for Electronic Materials College of Electrical Engineering Northwest Minzu University Resource chemistry and Energy 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

Rechargeable aqueous zinc-ion batteries （AZIBs） exhibit appreciable potential in the domain of electrochemical energy ***,there are serious challenges for AZIBs,for instance zinc dendrite growth,hydrogen evolution reaction （hER）,and corrosion side ***,we propose a surface engineering modification strategy for coating the montmorillonite （MMT） layer onto the surface of the Zn anode to tackle these issues,thereby achieving high cycling stability for rechargeable *** results reveal that the MMT layer on the surface of the Zn anode is able to provide ordered zincophilic channels for zinc ions migration,facilitating the reaction kinetics of zinc *** functional theory（DFT） calculations and water contact angle （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 engineering modification strategy for enhancing the electrochemical performance of AZIBs represents a promising application.

关键词： Surface engineering strategy 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

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

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 high quality(Q) factor, holds significant importance in the fields of high-precision sensing, energy storage 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 high-Q effects. here we propose a virtualized coupled-oscillator system that enables reconfigurable 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-ranging, 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 bright ***, a constant group delay at the center frequency is observed accompanying this evolution. Our work demonstrates an intriguing platform as well as a novel strategy to engineer high-Q induced transparency phenomenon, and paves the way towards applications in programmable acoustic sensors, filters and slow-wave devices.

关键词： induced transparency acoustic meta-atom high quality-factor scattering programmable intrinsic parameter