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Influence of DC Current on Corrosion Behaviour of Copper–Aluminium Composite Plates

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Acta Metallurgica Sinica(English Letters) 2021年第8期34卷 1142-1152页

作者： Yu-Lin Cheng xiao-Jiao zuo xiao-Guang Yuan Hong-Jun Huang Yi-Fan Zhang School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China

In this study, neutral salt spray accelerated corrosion test of copper–aluminium composite under 0–125 A DC current was carried out under 5% concentration. The effect of corrosion behaviour on copper–aluminium composite by DC current was carried out by a scanning electron microscope(SEM) with energy-dispersive spectroscopy(EDS), X-ray diffraction(XRD) patterns, X-ray photoelectron spectroscopy(XPS), weight-loss method and electrochemical analysis. The results show that the current can accelerate the corrosion rate. Meanwhile, the current temperature effect can reduce the corrosion rate. The current caused directional migration of ions resulting in different corrosion products on positive and negative poles of specimen, and the corrosion degree on the positive pole was more serious. The galvanic corrosion mechanism at the copper–aluminium interface is different from the pitting corrosion mechanism far away from the interface, and the latter is more affected by DC current.

关键词： Copper–aluminium composite Corrosion DC current Ionic migration Temperature effect

Ionospheric Weather and Climate—— A Review on Chinese Works From 2004 to 2006

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空间科学学报 2006年第Z1期26卷 112-121页

作者： WAN Weixing xiao zuo Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China School of Earth and Space Science Peking University

This paper reviews the recent studies on the ionospheric weather and climate. As a national report prepared for COSPAR, the works concerned here are limited to those made by Chinese scientists during 2004-2006. The main contents include the sudden ionospheric disturbances, the ionospheric storms, the traveling ionospheric disturbances, ionospheric variability, the annual and semiannual ionospheric variations, the solar cycle ionospheric variations, and the long term ionospheric changes.

关键词： Ionospheric weather and climate

4‑Terminal Inorganic Perovskite/Organic Tandem Solar Cells Offer 22%Efficiency

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Nano-Micro Letters 2023年第2期15卷 172-181页

作者： Ling Liu Hanrui xiao Ke Jin zuo xiao xiaoyan Du Keyou Yan Feng Hao Qinye Bao Chenyi Yi Fangyang Liu Wentao Wang Chuantian zuo Liming Ding Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190People’s Republic of China School of Metallurgy and Environment Central South UniversityChangsha 410083People’s Republic of China School of Physics State Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100People’s Republic of China School of Environment and Energy South China University of TechnologyGuangzhou 510000People’s Republic of China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 610054People’s Republic of China School of Physics and Electronic Science East China Normal UniversityShanghai 200241People’s Republic of China State Key Laboratory of Power System Department of Electrical EngineeringTsinghua UniversityBeijing 100084People’s Republic of China School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China Key Laboratory of Semiconductor Materials Science Beijing Key Laboratory of Low Dimensional Semiconductor Materials and DevicesInstitute of SemiconductorsChinese Academy of SciencesBeijing 100083People’s Republic of China

After fast developing of single-junction perovskite solar cells and organic solar cells in the past 10 years,it is becoming harder and harder to improve their power conversion *** solar cells are receiving more and more attention because they have much higher theoretical efficiency than single-junction solar *** device performance has been achieved for perovskite/silicon and perovskite/perovskite tandem solar cells,including 2-terminal and 4-terminal ***,very few studies have been done about 4-terminal inorganic perovskite/organic tandem solar *** this work,semi-transparent inorganic perovskite solar cells and organic solar cells are used to fabricate 4-terminal inorganic perovskite/organic tandem solar cells,achieving a power conversion efficiency of 21.25%for the tandem cells with spin-coated perovskite *** using drop-coating instead of spin-coating to make the inorganic perovskite films,4-terminal tandem cells with an efficiency of 22.34%are *** efficiency is higher than the reported 2-terminal and 4-terminal inorganic perovskite/organic tandem solar *** addition,equivalent 2-terminal tandem solar cells were fabricated by connecting the sub-cells in *** stability of organic solar cells under continuous illumination is improved by using semi-transparent perovskite solar cells as filter.

关键词： 4-Terminal tandem solar cells Inorganic perovskite solar cells Organic solar cells Semitransparent Drop-coating

Risk factors and care of early surgical site infection after primary posterior lumbar interbody fusion

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Frontiers of Nursing 2023年第2期10卷 203-211页

作者： xiao-Lin zuo Yan Wen Orthopedic trauma Luohe Central Hospital(The First Affiliated Hospital of Luohe Medical College)LuoheHenan 462000China Department of Nursing Luohe Central Hospital(The First Affiliated Hospital of Luohe Medical College)LuoheHenan 462000China

Objectives:To explore the risk factors and nursing measures of early surgical site infection(SSI)after posterior lumbar interbody fusion(PLIF).Methods:A total of 468 patients who received PLIF in our hospital from January 2017 to June 2020 were enrolled into this *** to the occurrence of early SSI,the patients were divided into two groups,and the general data were analyzed by univariate *** logistic regression analysis was conducted with the dichotomous variable of whether early SSI occurred and other factors as independent variables to identify the risk factors of early SSI and put forward targeted prevention and nursing ***:Among 468 patients with PLIF,18 patients developed early SSI(3.85%).The proportion of female,age,diabetes mellitus and urinary tract infection(UTI),operation segment,operation time,post-operative drainage volume,and drainage time were significantly higher than those in the uninfected group,with statistical significance(P0.05).Logistic regression analysis showed that preoperative diabetes mellitus(OR=2.109,P=0.012)/UTI(OR=1.526,P=0.035),prolonged drainage time(OR=1.639,P=0.029)were risk factors for early ***(OR=0.736,P=0.027)and albumin level(OR=0.526,P=0.004)were protective factors in reducing early ***:Women,preoperative diabetes/UTI,hypoproteinemia,and prolonged drainage time are risk factors for early SSI after *** effective preventive measures should be taken in combination with targeted nursing intervention to reduce the risk of early SSI.

关键词： incisional infection nursing measures posterior lumbar interbody fusion risk factors multivariate regression analysis

Energetic particle radiations measured by particle detector on board CBERS-1 satellite

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Chinese Science Bulletin 2007年第5期52卷 665-670页

作者： HAO YongQiang xiao zuo ZOU Hong ZHANG DongHe Department of Geophysics Peking University Beijing 100871 China Key Laboratory of Space Weather Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100080 China

Using the data measured by energetic particle detector on board CBERS-01 and -02 for the past five years, statistics was made to show the general features of MeV electrons and protons along a solar synchronous orbit at an altitude of 780 km. This height is in the bottom region of the Earth's radiation belts. Detectors are inside the satellite cabinet and such continuous monitoring of particle radiation environment inside a satellite has seldom conducted so far. After a proper and careful treatment, it is indicated that the data inside satellite are well correlated with the radiation environment outside. Be-sides the agreement of the general distribution characteristics of energetic electrons and protons with similar observations from other satellites, attention is particularly paid to the disturbed conditions. Variations of particle fluxes are closely related with solar proton events, in general, electron fluxes of outer belt are well correlated with Dst index after three days' delay while the electron injection occurred almost at the same day during great magnetic storms. It is confirmed that both energetic electrons and protons appear in the Polar Cap region only after the solar proton events.

关键词： CBERS-01 地球资源卫星高能粒子辐射粒子探测器测量空间环境辐射带

D-A Copolymers Based on a Pentacyclic Acceptor Unit and a 3,3′-Difluoro-2,2′-bithiophene for Solar Cells

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Chinese Journal of Polymer Science 2017年第12期35卷 1457-1462页

作者： Jia-min Cao Liu Qian Dan He zuo xiao 丁黎明 Center for Excellence in Nanoscience (Chinese Academy of Sciences) Key Laboratory of Nanosystem and Hierarchical Fabrication (Chinese Academy of Sciences) National Center for Nanoscience and Technology

A D-A copolymer, P2FBTTPTI, was developed by copolymerizing a pentacyclic acceptor unit, thieno[2′,3′：5,6]pyrido[3,4-g]thieno[3,2-c]isoquinoline-5,11（4 H,10 H）-dione（TPTI）, with 3,3′-difluoro-2,2′-bithiophene（2 FBT）. P2 FBTTPTI possessed a low highest occupied molecular orbital（HOMO） energy level（-5.50 e V） and a good hole mobility（4.14 × 10^-4 cm^2·V^-1·s^-1）. P2FBTTPTI：PC_（71）BM solar cells gave a decent power conversion efficiency（PCE） of 7.64% and a high open-circuit voltage（Voc） of 0.95 V.

关键词： D-A copolymers Fluorination Open-circuit voltage Polymer solar cells

Floral traits and pollination system of Zygophyllum xanthoxylum in the managed and wild populations in an arid region of Northwest China

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Journal of Arid Land 2015年第4期7卷 488-500页

作者： CHEN Min ZHAO Xueyong zuo xiao'an LIAN Jie ZHU Yangchun Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences University of Chinese Academy of Sciences

Zygophyllum xanthoxylum, which belongs to Sarcozygium of Zygophyllaceae, is one of the ecologically important species in Northwest China. In order to understand the pollination system of Z. xanthoxylum, we investigated the following characteristics of this species in the Urat Desert-grassland Research Station in western Inner Mongolia of China： flowering dynamics, pollen viability, pollen limitation, floral visitors and breeding system. The results showed that the flowering period and flowering peak were different between the wild and managed popula- tions, being longer in the managed population. Z. xanthoxylum was pollen-limited, and pollen limitation was more intense in the wild population than in the managed population. Chalicodoma deserticola （Hymenoptera） was found to be the most frequent pollinator in the wild population, while Anthophora fulvitarsis （Hymenoptera） was the most frequent and effective visitor in the managed population. Out-crossing was dominant in the breeding system and self-pollination just played an assistant role to assure the reproduction of Z. xanthoxylum.

关键词： Zygophyllum xanthoxylum pollination pollen limitation floral visitor fruit set seed set breeding system

Singlet fission and its application in organic solar cells

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Journal of Semiconductors 2022年第8期43卷 1-6页

作者： Yamin Zhang zuo xiao Liming Ding Hao-Li Zhang State Key Laboratory of Applied Organic Chemistry Key Laboratory of Special Function Materials and Structure Design(MoE)College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China Tianjin Key Laboratory of Molecular Optoelectronic Sciences Collaborative Innovation Center of Chemical Science and EngineeringTianjin UniversityTianjin 300072China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

Enhancing the power conversion efficiency(PCE)is the major task in the development of solar cells[1−5].In 1961,William Shockley and Hans *** pointed out that the highest PCE for a single-junction solar cell is limited to 31%due to the thermalization and transmission losses[6].Singlet fission(SF)is an appealing carrier-multiplication approach to break the Shockley-Queisser limit,since it converts one high-energy singlet exciton into two low-energy triplet ***,one absorbed photon generates two electron-hole pairs.

关键词： limit convert singlet

COF-based electrochromic materials and devices

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Journal of Semiconductors 2022年第9期43卷 6-9页

作者： Yunye Wang zuo xiao Shanxin Xiong Liming Ding College of Chemistry and Chemical Engineering Xi’an University of Science and TechnologyXi’an 710054China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

The transparency,reflectivity and color for electro-chromic(EC)materials can be changed reversibly under low bias[1].EC materials find wide application in many fields like microelectronics,energy-saving buildings,automobiles,na-tional defense and aerospace industry[2].Compared with inor-ganic EC materials,organic EC materials have advantages like easy modification of molecular structures,rich color changes and fast-switching speed[3].

关键词： transparency materials reflectivity