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Journal of Magnesium and Alloys 2023年第4期11卷 1213-1223页

作者： xuewu li Qingyuan Yu Xi Chen Qiaoxin Zhang State Key Laboratory of Tribology Tsinghua UniversityBeijing 100084China School of Mechanical Engineering Xi’an University of Science and Technology58 Yanta RoadXi’an 710054China School of Mechanical and Electronic Engineering Wuhan University of Technology122 Luoshi RoadWuhan 430070China

New-type magnesium alloy with prominent solubility and mechanical property lays foundation for preparing fracturing part in petroleum ***,Mg-xZn-Zr-SiC alloy is prepared with casting *** and compression tests are conducted to assess the feasibility as decomposable ***,composition,phase and distribution are characterized to investigate decomposition *** indicate that floccule,substrate component and reticulate secondary phase are formed on as-prepared *** also acts out enhanced compression strength to maintain pressure and guarantee stability in dissolution ***,as decomposition time and zinc content increase,couple corrosion intensifies,resulting in gradually enhanced decomposition *** sample decomposition is mainly due to basal anode dissolution,micro particle exfoliation and poor decomposition resistance of corroding *** work shows profound significance in preparing new-type accessible alloy to ensure rapid dissolution of fracturing part and guarantee stable compression strength in oil-gas reservoir exploitation.

关键词： Magnesium alloy Corrosion dissolution Compression strength Electrochemical test Decomposition mechanism

Model comparisons on molten core-concrete interactions

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Nuclear Science and Techniques 2009年第4期20卷 251-256页

作者： TONG lili CAO xuewu li Jingxi YANG Yajun School of Nuclear Science and Engineering Shanghai Jiaotong University Shanghai 200240 China

Based on the plant model of 600-MW PWR,the molten core-concrete interactions(MCCI) under different models are *** blackout (SBO) with steam-driven auxiliary feed water pump failure is selected as the case for the model comparisons *** result shows that thermal resistance model between debris and concrete has much influence on the consequence of *** concrete erosion rate calculated with gas film model is much higher than that of slag film *** other model comparisons such as the chemical reaction heat and the configuration molten pool are also discussed.

关键词：压水反应堆核技术 MCCI PWR

Secondary Aggregation Induced by Volatile Additive for Improved Exciton Diffusion and Charge Separation in High Efficiency Organic Photovoltaic Devices

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Chinese Journal of Chemistry 2024年第22期42卷 2825-2832页

作者： Yufeng Ge xuewu li Mingxu Zhou Peng Lu Xiaotao Hao School of Physics State Key Laboratory of Crystal MaterialsShandong UniversityJinanShandong 250100China schoolof Physics National Demonstration Center for Experimental Physics EducationShandong University JinanShandong 250100 China ARC Centre of Excelence in Exciton Science Schoolof ChemistryThe Universityof MebourneParkvilleVictoria 31Australia

Comprehensive Summary The morphology of the active layer plays a crucial role in the performance of organic *** volatile additives are commonly used to manipulate the morphology,their mechanism of action remains poorly *** this study,we conducted a systematic exploration of the mechanism of the traditional volatile additive 1-CN in film formation kinetics of typical PM6:Y6 *** found that 1-CN induces a secondary aggregation effect,improving film morphology and promoting face-on crystalline *** elucidating its impact on exciton dynamics,we established a link between morphology optimization and increased exciton diffusion length and accelerated charge *** findings unveil the unique mechanism of action of volatile additive,providing a new perspective for improving the morphology and enhancing the performance of organic photovoltaic devices.

关键词： Organic photovoltaics Volatile additive Exciton diffusion Charge separation Hole transfer Morphology control Photophysics Kinetics π-πStacking Time-resolved spectroscopy Adsorption

The Effects of Different Post-Heat Treatments on Rolling Contact Fatigue Behaviors of Direct Laser Cladding Inconel 625 Coatings

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Journal of Renewable Materials 2021年第1期9卷 129-144页

作者： Qiaoxin Zhang Rui Chen Ding Jin Chen Zhou xuewu li School of Materials Science and Engineering Wuhan University of TechnologyWuhan430070China School of Mechanical and Electronic Engineering Wuhan University of TechnologyWuhan430070China School of Mechanical Engineering Xi’an University of Science and TechnologyXi’an710054China State Key Laboratory of Tribology Tsinghua UniversityBeijing100084China Shandong Key Laboratory of Corrosion Science Institute of OceanologyChinese Academy of SciencesQingdao266071China

In this paper,the microstructures and rolling contact fatigue behaviors of laser cladding Inconel 625 coatings with or without post-heat treatments were *** results revealed that the fatigue resistance of the laser cladding coating after any post-heat treatment was worse than that of the as-deposited ***,through the finite element analysis,the distribution of stress along the thickness direction of the coating was obtained,and it was concluded that the bonding interface between the coating and the matrix had little effect on the fatigue properties of the *** X-ray diffraction(XRD),scanning electron microscopy(SEM)and energy dispersive spectrometry(EDS)were used to analyze the microstructure and failure *** results revealed that the subsurface failure morphology of the coatings showed a consistent correlation with rolling fatigue property after different heat *** TCP phase and carbides have been shown in the laser cladding *** coating after stress relieved annealing exhibited chain-shaped granular carbides on the grain boundaries which could accelerate crack *** aging heat treatment made small amounts of Laves phase dissolved in the coating,while the dispersed phase was precipitated which could result in the formation of *** the solution treatment made large amounts of Laves phase dissolved,while the rod-shape brittle phases were generated which was easy to fracture and contribute to crack initiation and spalling.

关键词： Laser cladding Inconel 625 coating heat treatment rolling contact fatigue microstructure

A high-reliability optical network architecture based on wavelength division multiplexing passive optical network

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Optoelectronics Letters 2021年第7期17卷 422-426页

作者： CHEN Baoren HONG Danke WANG li OU Yongtong TAN Yizhi li xuewu ZHONG Xinhui China Southern Power Grid Power Dispatching Control Center Guangzhou 510030China China Southern Power Grid Digital Grid Research Institute Co. Ltd.Guangzhou 511458China School of Information Engineering Guangdong University of TechnologyGuangzhou 510006China

A highly reliable wavelength division multiplexing passive optical network architecture for the fifth generation(5 G) applications is designed by combining a tree topology with a dual-fiber ring. While the tree topology ensures the transmission quality of the network, the dual-fiber ring topology allows one to achieve flexible switching between the nodes, which aims to provide fault protection and network reliability. The signal transmission under the normal and three types of protection modes are analyzed. The performance analysis verifies the feasibility of the proposed architecture.

关键词： network passive optical

空间和女性的寓言——解读彭小莲“上海三部曲”

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当代电影 2006年第4期 135-138页

作者：李学武暨南大学中文系副教授510632

本文以“空间”和“女性”为切入点,解析导演彭小莲的“上海三部曲”。彭小莲影片中各种上海空间的影像,无不隐喻种种社会关系的重叠与渗透。《假装没感觉》中,房间隐喻着两性关系;《美丽上海》中,对空间的争夺生产出身份冲突和代际纠葛... 详细信息

本文以“空间”和“女性”为切入点,解析导演彭小莲的“上海三部曲”。彭小莲影片中各种上海空间的影像,无不隐喻种种社会关系的重叠与渗透。《假装没感觉》中,房间隐喻着两性关系;《美丽上海》中,对空间的争夺生产出身份冲突和代际纠葛;《上海伦巴》的两个空间揭示现实与回忆的关系,但却是一个欲望杂陈的文本。

关键词：彭小莲上海空间女性

作为仿像或叙述的“世界”——从影片《世界》和《扁担·姑娘》谈起

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当代电影 2005年第4期 121-123页

作者：李学武暨南大学中文系副教授510632

贾樟柯在他的新片《世界》中,以一系列象征符号把城市表述为巨大的仿像世界;而同为新生代导演的王小帅的影片《扁担·姑娘》中,城市被表述为传媒中的官方叙述。两人镜头中的城市均是异乡人无法走进的冰冷的存在,他们并试图以“真实”来... 详细信息

贾樟柯在他的新片《世界》中,以一系列象征符号把城市表述为巨大的仿像世界;而同为新生代导演的王小帅的影片《扁担·姑娘》中,城市被表述为传媒中的官方叙述。两人镜头中的城市均是异乡人无法走进的冰冷的存在,他们并试图以“真实”来对抗,但这种对抗却是不彻底的,甚至存在自我解构的因素。在某种意义上来说,《世界》本身正如同他所批判的,也是一个商业社会中的“仿像”。

关键词：《世界》 “世界” 仿像姑娘影片叙述作为新生代导演象征符号 “真实” 商业社会贾樟柯城市王小帅异乡人表述对抗批判

Preparation and Properties of Y_(2)O_(3)-PF Alternating Coating on Polymer Matrix Composite Material Surface

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稀有金属材料与工程 2024年第10期53卷 2777-2785页

作者： li xuewu Zhang Jiahao Feng Yuxi liu Ming Shi Tian Wang Haidou Bai Yu Wang Yu College of Mechanical Engineering Xi'an University of Science and TechnologyXi'an 710054China Faculty of Materials Xi'an University of TechnologyXi'an 710048China National Key Laboratory for Remanufacturing Army Academy of Armored ForcesBeijing 100072China National Engineering Research Center for Remanufacturing Army Academy of Armored ForcesBeijing 100072China School of Materials Science and Engineering Xi'an Jiaotong UniversityXi'an 710049China

High-performance yttrium oxide-phenolic resin(Y_(2)O_(3)-PF)alternating coating was prepared on epoxy resin-based composite material using supersonic plasma spraying and dual-channel powder feeding technique.Y_(2)O_(3)-coated PF(Y_(2)O_(3)/PF)powder was firstly sprayed onto the substrate,forming a transition layer,and then the spherical Y_(2)O_(3) powder and Y_(2)O_(3)/PF powder were alternately deposited to form the composite alternating *** show that the alternating coating is mainly composed of deposited Y_(2)O_(3)/PF *** bonding strength between coating and substrate is as high as 26.48 MPa with the single-test maximum bonding strength of 28.10 MPa,and shear strength reaches 24.30 ***,the heat transfer effect caused by external Y_(2)O_(3) particles gradually softens and even melts PF,thus effectively avoiding the damage of high temperature to molecular structure and thereby promoting the crosslinking and curing effects of resin during the deposition *** the meantime,the unmelted Y_(2)O_(3) powder results in the shot peening effect,which washes out and eliminates the powder particles with inferior deposition effect,ultimately improving the physical and chemical properties of the alternating coating.

关键词： Y_(2)O_(3)-PF alternating coating epoxy resin composite material supersonic plasma spraying mechanical property

Puncturing Methods for Fengchi(GB 20)

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Journal of Traditional Chinese Medicine 2001年第1期21卷 43-44页

作者：孙璇李学武周永生 Department of Acupuncture and Massotherapy Beijing University of Traditional Chinese MedicineBeijing 100029

Fengchi (GB 20) is a point of the Gallbladder Meridian of Foot-Shaoyang. It is commonly used in clinical practice. According to the literature of traditional Chinese medicine, Fengchi (GB 20) can be used to treat many diseases, especially for the disorders caused by pathogenic wind. The indications include common cold, headache, cervical spondylosis, trigeminal neuralgia, hypertension, apoplexy, neurasthenia, epilepsy, optic atrophy, tinnitus, myopia, and painful heel etc. The viewpoints of different schools varies on the needling angle and depth at Fengchi (GB 20). Perpendicularly puncturing 0.3-0.7cun deep is recorded in most of the ancient books. Puncturing to a depth of 1.2 cun is mentioned in Fundamentals of Acupuncture and Moxibustion (针灸资生经) and Compendium of Acupuncture and Moxibustion (针灸大成). Jiang Yijun, a modern famous acupuncturist, holds that the depth of needle insertion at Fengchi (GB 20) should be varied in different individuals and different diseases. In general, deep puncture should be adopted for the disease in deep location, shallow puncture for the disease in shallow area, and tapping with plum-blossom needle for the disease on the skin. These will be introduced below.

关键词： Acupuncture Points Acupuncture Therapy Humans

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基层央行履行宏观审慎职责路径

中国金融 2020年第7期 88-89页

作者：李学武中国人民银行西安分行

全面高效履行宏观审慎职责,是新K时代建立现代中央银行制度的重要内容,也是依法完善中央银行治理体系和提升治理能力的重要组成部分。基层中央银行作为宏观审慎政策自上而下传导和实施的主体,亟须就宏观审慎管理工作的功能定位、目标手... 详细信息

全面高效履行宏观审慎职责,是新K时代建立现代中央银行制度的重要内容,也是依法完善中央银行治理体系和提升治理能力的重要组成部分。基层中央银行作为宏观审慎政策自上而下传导和实施的主体,亟须就宏观审慎管理工作的功能定位、目标手段、保障机制等进行深入研究思考,这对促进现代基层中央银行建设具有重要的现实意义。

关键词：基层中央银行基层央行宏观审慎管理宏观审慎政策治理能力中央银行制度功能定位自上而下