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Promoting the charge separation and photoelectrocatalytic water reduction kinetics of Cu_(2)O nanowires via decorating dual-cocatalysts

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Journal of Materials Science & Technology 2021年第3期62卷 119-127页

作者： Mengmeng Zhang Jiajun wang Yang wang Jinfeng Zhang Xiaopeng Han Yanan Chen yuesheng wang Zaghib Karim Wenbin Hu Yida Deng School of Materials Science and Engineering Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of EducationTianjin UniversityTianjin300072China Center of Excellence in Transformation Electrification and Energy Storage Hydro-Québec1806 Boulevard Lionel-BouletVarennesQuébecJ3X 1S1Canada Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou350207China

Developing high activity and low-cost materials to produce hydrogen by the sustainable way of photoelectrochemical is key to social *** abundance and inexpensive Cu_(2)O has been received increasing research as its suitable energy level for photocatalytic water ***,the fast charge recombination rate and the sluggish catalytic kinetics are the huge challenges facing the Cu_(2)O ***,the highly reactive Cu_(2)O@C-MoS_(2)photocathode is constructed by depositing dual-cocatalysts of the carbon layer and MoS_(2)nanosheets on Cu_(2)O nanowires to realize efficient water *** impressive carrier concentration of 6.59×10^(23)cm^(-3)is received,which is 2.78 times of the bare Cu_(2)O,resulting in remarkable enhancement in photocurrent density of 3.34 times for the Cu_(2)O@CMoS_(2)***,the applied bias photon-to-current conversion efficiency of the bare Cu_(2)O enhanced 4.5 times from 0.16%to 0.72%in the Cu_(2)O@C-MoS_(2)*** analysis shows that the Cu_(2)O as light absorber,the carbon layer as electron transfer promoter,and MoS_(2)nanosheets as catalytic sites,thus facilitating chrage separation and enhancing catalytic *** system paves a feasible strategy for designing other photoelectrodes to realize efficient charge separation and high catalytic activity.

关键词： Photoelectrochemical water reduction Cu_(2)O nanowires Dual-cocatalysts modification Photocathode Charge separation

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Na-K liquid alloy:A review on wettability enhancement and ionic carrier selection mechanism

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Chinese Chemical Letters 2021年第3期32卷 983-989页

作者： Xinran Li Jiahao Liu Cheng Chen Jian Yang Ziqiang Xu Mengqiang Wu yuesheng wang Zaghib Karim School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China Center of Excellence in Transportation Electrification and Energy Storage Hydro-QuébecVarennesQC J3X1S1Canada

The intrinsic liquid interface of Na-K alloy allays concerns about dendrite growth on metal anodes that are thermodynamically within the room temperature(20-22℃).Nevertheless,it hinders the formation of a stable electrode structure due to the inferior wettability induced by considerable liquid *** addition,the dominant ionic carrier in the Na-K alloy is subject to multiple factors,which is not conducive to customized battery *** review,based on recently reported frontier achievements on Na-K liquid anodes,summarizes practical strategies for promoting the wettability by hightemperature induction,capillary effect,vacuum infiltration,and solid interface *** re,four selection mechanisms of the dominant ionic carrier are presented:(1)ion property dominated,(2)cathode dominated,(3)separator dominated,and(4)solid electrolyte interface ***,initial electrolytes in energy storage systems have been unable to play a decisive role in ionic *** a superior wettability strategy and simultaneously identifying the dominant ionic carrier can facilitate the tailored application of dendrite-free Na-K liquid anodes.

关键词： Liquid electrode Na-K alloy Dendrite inhibition Wettability improvement Carrier selectivity

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The toxic effect of solubilizing excipients on Tetrahymena thermophila BF_5 growth investigated by microcalorimetry

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Chinese Science Bulletin 2010年第18期55卷 1870-1876页

作者： ZHANG ShaoFeng YAN Dan TANG HuiYing YANG Ming wang yuesheng XIAO XiaoHe China Military Institute of Chinese Materia Medica 302 Military Hospital of China Beijing 100039 China Jiangxi College of Traditional Chinese Medicine Nanchang 330004 China

The toxic effect of different solubilizing excipients on the growth and metabolism of Tetrahymena thermophila BF5(***5) at various concentrations was investigated by *** thermogenic curves of ***5 growth were determined at 28°C,and were evaluated by dynamic *** results indicated that the values of growth rate constant(k),maximum power(P1,P2),peak time(T1,T2) and total quantity of heat(Q) varied for different *** was a good linear relationship between k and concentrations(r>0.95,P<0.01).5% inhibition concentration(IC5) of poloxamer 188,Tween 80,PEG 600,PEG 400 and Tween 20 was 2.18,1.07,1.35,0.58,and 0.045 mg/mL,*** the principal component analysis(PCA),Q,k and P1 could characterize the effect of these excipients on ***5 *** evaluation indicated that compared with the control group,poloxamer 188 had the weakest toxicity and Tween 20 had the strongest toxicity.

关键词：生长速率常数嗜热四膜虫毒性作用辅料聚乙二醇400 微量热抑制浓度 ramp

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Analysis of the Changes in Rural Chinese Family Structure since Reform and Opening Up

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Contemporary Social Sciences 2020年第1期5卷 102-124页

作者： wang yuesheng Institute of Population and Labor Economics Chinese Academy of Social Sciences

This article uses data from censuses since 1982 to reveal changes in the family structure of rural China since the launch of reform and opening up and against the backdrop of institutional relocation,social transformation and an aging *** the advent of reform and opening up,rural family structure and its changes can be divided into two *** the 1990 s,the household contract responsibility system was implemented,labor in rural villages was still mainly engaged in farming,and the number of nuclear families remained stable with a steady *** the 1990 s,as reform progress deepened,substantial numbers of young and middle-aged laborers in rural villages began to relocate into non-farming sectors and aging in rural villages *** those born in the early days of the family planning policy gradually matured,family structure was directly affected and changed in new ways and forms not seen *** divisions of labor among the parents of young families and married offspring emerged and the significance of cooperation for family economy and daily life between parents and offspring rose in ***,the prevalence of immediate families with three generations climbed while the standard nuclear families declined,the ratio of middle-aged couples with young children that worked outside the home increased,the function of middle-aged and senior parents in the upbringing of infants and children enhanced,and the commonness of incomplete family types such as only grandparents with grandchildren *** this phase,the number of seniors living alone surged to the point of becoming a matter worthy of attention.

关键词： reform and opening up social transformation family structure rural village

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西罗莫司治疗儿童蓝色橡皮疱痣综合征5例并文献复习

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儿科药学杂志 2024年第2期30卷 36-40页

作者：王跃生张敬薛福敏于志丹李小芹郑州大学附属儿童医院河南省儿童医院郑州儿童医院郑州市儿童消化疾病重点实验室郑州450018

目的:探讨儿童蓝色橡皮疱痣综合征(BRBNS)的临床特征及应用西罗莫司治疗的临床疗效。方法:收集我院2019年1月至2022年4月收治的5例儿童BRBNS的临床资料。通过PubMed、中国知网、万方数据库检索建库至2022年4月收录的文献,分析BRBNS的临... 详细信息

目的:探讨儿童蓝色橡皮疱痣综合征(BRBNS)的临床特征及应用西罗莫司治疗的临床疗效。方法:收集我院2019年1月至2022年4月收治的5例儿童BRBNS的临床资料。通过PubMed、中国知网、万方数据库检索建库至2022年4月收录的文献,分析BRBNS的临床特征、诊断、治疗及预后情况。结果:5例BRBNS均有皮肤静脉畸形及胃肠道病变;伴随重度小细胞低色素性贫血,表现为面色苍白、生长缓慢;内镜对BRBNS诊断率达100%,病变分布在胃、十二指肠、空肠、回肠、结肠等。治疗上需多次输血、口服普萘洛尔、局部介入或硬化处理病变。多数3~6个月复发,改用西罗莫司后症状好转。西罗莫司起始日剂量为0.5~1.0 mg/m^(2),根据血药浓度调整剂量增加至每日2.0 mg/m^(2),达到目标浓度5.0~10.0 ng/mL,维持血红蛋白至稳定水平。结论:儿童BRBNS临床症状较重且易反复,西罗莫司可作为安全有效的治疗药物。

关键词：西罗莫司蓝色橡皮疱痣综合征临床特征儿童

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A Study of Changes in Family Structure in the Rural Areas of North China: Based on Analyses of South Hebei from the 1930s to 1990s

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Social Sciences in China 2003年第3期24卷 14-26页

作者： wang yuesheng Xiao Dezhu

本文从1930—1990年代这一社会变革背景下考察冀南农村家庭结构的变动。在60年的历史演变中,冀南农村家庭结构有两个变动特征:一是复合家庭由土改前占一定比例,到土改后逐步萎缩,1960年代中期以后陆续在一些村庄消失;二是核心家庭比重... 详细信息

本文从1930—1990年代这一社会变革背景下考察冀南农村家庭结构的变动。在60年的历史演变中,冀南农村家庭结构有两个变动特征:一是复合家庭由土改前占一定比例,到土改后逐步萎缩,1960年代中期以后陆续在一些村庄消失;二是核心家庭比重稳步增多。虽然土改前各个村庄核心家庭均是比重最在的家庭类别,但它还未占到绝对多数。土改以后,特别是集体经济时代,核心型小家庭成为多数家庭成员的追求。家庭核心化局面在1960年代中期之后逐渐形成。

关键词：农村家庭结构历史演变核心家庭社会变革土改复合家庭冀南年代家庭成员变动

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Sentiment Analysis Using E-Commerce Review Keyword-Generated Image with a Hybrid Machine Learning-Based Model

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Computers, Materials & Continua 2024年第7期80卷 1581-1599页

作者： Jiawen Li yuesheng Huang Yayi Lu Leijun wang Yongqi Ren Rongjun Chen School of Computer Science Guangdong Polytechnic Normal UniversityGuangzhou510665China Hubei Province Key Laboratory of Occupational Hazard Identification and Control Wuhan University of Science and TechnologyWuhan430065China

In the context of the accelerated pace of daily life and the development of e-commerce,online shopping is a mainstreamway for consumers to access products and *** understand their emotional expressions in facing different shopping experience scenarios,this paper presents a sentiment analysis method that combines the ecommerce reviewkeyword-generated imagewith a hybrid machine learning-basedmodel,inwhich theWord2Vec-TextRank is used to extract keywords that act as the inputs for generating the related images by generative Artificial Intelligence(AI).Subsequently,a hybrid Convolutional Neural Network and Support Vector Machine(CNNSVM)model is applied for sentiment classification of those keyword-generated *** method validation,the data randomly comprised of 5000 reviews from Amazon have been *** superior keyword extraction capability,the proposedmethod achieves impressive results on sentiment classification with a remarkable accuracy of up to 97.13%.Such performance demonstrates its advantages by using the text-to-image approach,providing a unique perspective for sentiment analysis in the e-commerce review data compared to the existing ***,the proposed method enhances the reliability and insights of customer feedback surveys,which would also establish a novel direction in similar cases,such as social media monitoring and market trend research.

关键词： Sentiment analysis keyword-generated image machine learning Word2Vec-TextRank CNN-SVM

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A new Tin-based O3-Na_(0.9)[Ni_(0.45-x/2)Mn_xSn_(0.55-x/2)]O_2 as sodium-ion battery cathode

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Journal of Energy Chemistry 2019年第4期28卷 132-137页

作者： Xiaohui Rong Xingguo Qi Yaxiang Lu yuesheng wang Yunming Li Liwei Jiang Kai Yang Fei Gao Xuejie Huang Liquan Chen Yong-Sheng Hu State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems China Electric Power Research Institute Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and Devices Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences School of Physical Sciences University of Chinese Academy of Sciences

Recently,sodium-ion batteries(SIBs),regarded as promising supplements for lithium-ion batteries(LIBs),especially in the large-scale energy storage field,are attracting more and more ***,the limited suitable cathode materials hinder the wide commercialization of *** this aspect,in this work,a new layered oxide with 4d metal Tin was synthesized and investigated as cathode material for *** optimized sodium-deficient O3-Na_(0.9)Ni_(0.45)Sn_(0.55)O_2and O3-Na_(0.9)Ni_(0.4)Mn_(0.1)Sn_(0.5)O_2were selected for comprehensive investigation,both of which exhibited high operating voltage of around 3.45 V with smooth charge/discharge *** comparison,O3-Na_(0.9)Ni_(0.4)Mn_(0.1)Sn_(0.5)O_2shows a higher reversible capacity(65 m A h/g,0.1 C),better rate capability and cycling stability than that of O3-Na_(0.9)Ni_(0.45)Sn_(0.55)O_2(50 mA h/g,0.1 C),indicating that a small amount of Mn-substitution can improve the electrochemical *** work presents a new possibility of discovering potential cathode candidates by exploring the Tin-based layered oxides.

关键词： Sodium-ion batteries Layered oxide cathode Tin-based cathode

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Multifunction switching by a flat structurally tunable acoustic metasurface for transmitted waves

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Science China(Physics,Mechanics & Astronomy) 2020年第4期63卷 98-107页

作者： ALi Chen QuanYu Tang HaoYu wang ShengDong Zhao yuesheng wang Institute of Engineering Mechanics Beijing Jiaotong UniversityBeijing 100044China School of Mathematics and Statistics Qingdao UniversityQingdao 266071China Institute of Mechanics for Multifunctional Materials and Structures Qingdao UniversityQingdao 266071China Department of Mechanics Tianjin UniversityTianjin 300350China

In this paper a flat structurally tunable acoustic metasurface is constructed based on the helical unit cell. The length of the acoustic channel can be tuned by the screw-in depth of the helix. Accordingly, the wave phase for the transmitted acoustic wave can be tuned and the wavefront can be manipulated. Then multifunctions such as anomalous refraction, point focusing, beam focusing and self-bending can be realized and switched just by screwing in or out the helixes. At the same time, the broadband operating frequency is also realized. The experiments for anomalous refraction and point focusing are also performed, and the results show that the designed metasurface is effective. The present studies have important applications in dynamic manipulation of acoustic waves by metasurfaces.

关键词： metasurface acoustic wave transmission multifunction switching generalized Snell's law

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DYNAMIC ANALYSIS OF A BURIED RIGID ELLIPTIC CYLINDER PARTIALLY DEBONDED FROM SURROUNDING MATRIX UNDER SHEAR WAVES

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Acta Mechanica Solida Sinica 1995年第1期8卷 51-63页

作者： wang yuesheng wang Duo, Department of Astronautics and Mechanics, Harbin Institute of Technology, Harbin 150001, P. R. China Department of Astronautics and Mechanics Harbin Institute of Technology Harbin 150001 China

This paper investigates the dynamic behavior of a buried rigid elliptic cylinder partially debonded from surrounding matrix under the action of anti-plane shear waves (SH waves). The debonding region is modeled as an elliptic arc-shaped interface crack with non-contacting faces. By using the wave function (Mathieu function) expansion method and introducing the dislocation density function as an unknown variable, the problem is reduced to a singular integral equation which is solved numerically to calculate the near and far fields of the problem. The resonance of the structure and the effects of various parameters on the resonance are discussed.

关键词： elastic wave scattering interface debonding interface crack wave function singular integral equation

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