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Chinese Physics B 2020年第8期29卷 24-32页

作者： jinbing zhang Qiang Wang Zexian Cao School of Mathematics and Physics University of Science and Technology BeijingBeijing 100083China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China

Transport properties and the associated structural heterogeneity of room temperature aqueous ionic liquids and especially of super-concentrated electrolyte aqueous solutions have received increasing attention,due to their potential application in ionic *** paper briefly reviews the results reported mainly since 2010 about the liquid-liquid separation,aggregation of polar and apolar domains in neat RTILs,and solvent clusters and 3D networks chiefly constructed by anions in super-concentrated electrolyte *** the same time,the dominating effect of desolvation process of metal ions at electrode/electrolyte interface upon the transport of metal ions is *** paper also presents the current understanding of how water affects the anion-cation interaction,structural heterogeneities,the structure of primary coordination sheath of metal ions and consequently their transport properties in free water-poor electrolytes.

关键词： super-concentrated electrolyte solutions room temperature ionic liquids water effect structural heterogeneity transport property

基于SECS/GEM协议的芯片烘箱设备智能故障诊断算法设计

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电子与封装 2024年第7期24卷 90-97页

作者：梁达平赵玉祥张进兵天水师范学院集成电路封装测试教育部工程研究中心甘肃天水741000 天水华天科技股份有限公司甘肃天水741000

针对芯片烘箱设备故障排查困难,提出了一种改进型贝叶斯网络故障诊断算法。利用SECS/GEM通信协议从设备端获取故障报警数据,建立芯片烘箱设备故障树。将故障树映射为贝叶斯网络,通过对贝叶斯网络反向推理计算得到可用于指导维修工作的... 详细信息

针对芯片烘箱设备故障排查困难,提出了一种改进型贝叶斯网络故障诊断算法。利用SECS/GEM通信协议从设备端获取故障报警数据,建立芯片烘箱设备故障树。将故障树映射为贝叶斯网络,通过对贝叶斯网络反向推理计算得到可用于指导维修工作的诊断决策树。将历史故障样本数据代入算法模型中进行验证分析,验证结果表明,按照诊断决策树进行故障诊断能够将诊断误差率控制在5%左右,满足企业用户要求,具有较高的应用价值。

关键词：故障树贝叶斯网络机器学习芯片烘箱 SECS/GEM

UV illumination enhanced desorption of oxygen molecules from monolayer MoS2 surface

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Nano Research 2020年第2期13卷 358-365页

作者： Yuhang Wang Zhiquan He jinbing zhang Hao Liu Xubo Lai Boyang Liu Yibao Chen Fengping Wang Liuwan zhang Department of Applied Plhysics School ofMathematics and PhysicsUniversity of Science and Techmology BejingBeijing 10083China State Key Laboratory of Low-Dimensional Quantum Physics Collaborative Innovation Center of Quantum MatterDepartment of PhysicsTsinghua UniversityBeijing 100084China

The oxygen adsorption can drastically alter the electronic properties of the two-dimensional(2D)materials,which is usually dificult to be *** this work,we report the ultraviolet(UV)ilumination induced desorption of the O2 molecules from the monolayer MoS2 surface by using the atmosphere dependent transport measurement,Kelvin probe microscopy,photoluminescence spectroscopy and X-ray photoelectron *** increasing of the conductivity,rising of the Fermi level,and red shift of the photoluminescence peaks of the MoS2 were observed after the UV ilumination in vacuum,indicating the elimination of the depletion effect from the oxygen *** parameter changes can be reversibly recovered by the subsequent O2 ***,obvious decreasing of the oxygen concentration after the UV ilumination was also observed by X-ray photoelectron *** the UV induced O2 photodesorption effect is *** photo-excited charge transfer mechanism is proposed to account for the photodesorption *** results provide a nondestructive way to clean the MoS2 surface and manipulate the performance of the MoS2 based devices.

关键词： MoS2 desorption ultraviolet(UV)ilumination oxygen adsorption carrier density

Gd_(2)O_(3) nanoparticles modified g-C_(3)N_(4) with enhanced photocatalysis activity for degradation of organic pollutants

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Journal of Rare Earths 2021年第11期39卷 1353-1361,I0002页

作者： Yipeng Zhou Fanshan Zeng Chaoyang Sun Jun Wu Yu Xie Fayun zhang Senlin Rao Fahui Wang jinbing zhang Jinsheng Zhao Shiqian Li School of New Energy Science and Engineering Xinyu UniversityXinyu 338004China College of Environment and Chemical Engineering Nanchang Hangkong UniversityNanchang 330063China College of Chemistry and Chemical Engineering Liaocheng UniversityLiaocheng 252059China School of Materials and Environmental Engineering Fujian Polytechnic Normal UniversityFuqing 350300China

Gd_(2) O_(3) nanoparticles modified g-C_(3) N_(4) photocatalytic composites were synthesized by a simple one-step hydrothermal *** structure,morphology,optical properties of the prepared photocatalyst were characterized by X-ray diffraction(XRD),field emission scanning electron microscopy(FESEM),field emission transmission electron microscopy(FETEM) and X-ray photoelectron spectroscopy(XPS).The result demonstrates that gadolinium is mainly dispersed on the surface of g-C_(3) N_(4) in the form of Gd_(2) O_(3),and does not destroy the lattice structure of g-C_(3) N_(4).Besides,the gadolinium can cause the red shift of the absorption edge of light,narrow the band gap,and increase the separation efficiency of the photogenerated electron and hole of g-C_(3) N_(4).Especially,the specific surface area of g-C_(3) N_(4) can be significantly ***,g-C_(3) N_(4)/Gd-0.05 displays the highest photodegradation performance when it is used for degradation of methyl orange(MO),methylene blue(MB) and Rhodamine B(RhB).The photodegradation rate of g-C_(3) N_(4)/Gd-0.05 composites is 72.4% for MO,95.5% for RhB,100% for MB after120 min under visible light(λ> 420 nm) *** band gap promotes the separation of photogenerated electron and hole,which enhances the photocatalytic activity of g-C_(3) N_(4).It is noted that g-C_(3) N_(4)/Gd-0.05 exhibits excellent photocatalytic stability by the photocurrent and the cyclic photodegradation of MO.

关键词： Gd_(2)O_(3) g-C_(3)N_(4) Photocatalysis activity Visible light Hydrothermal method Rare earths

基于灰狼优化算法的改进Canny算子的芯片标识图像边缘检测

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贵州大学学报（自然科学版） 2024年第5期41卷 41-48页

作者：刘勍郝静侯喆赵利民赵玉祥张进兵天水师范学院电子信息与电气工程学院甘肃天水741001 集成电路封装测试教育部工程研究中心甘肃天水741001 天水华天电子集团股份有限公司甘肃天水741000

为有效进行芯片标识的提取,提出一种基于灰狼优化算法(gray wolf optimization,GWO)的改进动态双阈值的Canny算子来进行芯片标识图像边缘提取。首先,从芯片标识生产环境复杂、图像干扰信息多的角度出发,对Canny算子的双阈值进行改进;其... 详细信息

为有效进行芯片标识的提取,提出一种基于灰狼优化算法(gray wolf optimization,GWO)的改进动态双阈值的Canny算子来进行芯片标识图像边缘提取。首先,从芯片标识生产环境复杂、图像干扰信息多的角度出发,对Canny算子的双阈值进行改进;其次,使用灰狼优化算法确定其高阈值选取;最后,将本文算法与传统Log、Prewitt、Roberts、Canny、Sobel算子进行实验比较,利用召回率和精确率等方法作了客观评估。实验结果表明,本文所提算法优于传统的边缘提取算法,提取准确度高,为后续识别打下了坚实基础。

关键词：芯片标识图像边缘检测改进Canny算子 GWO

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Restoring force model of assembled piers connected with grouting sleeves and a mortise hybrid joint

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Journal of Traffic and Transportation Engineering(English Edition) 2024年

作者： Shangshun Lin Jianshuai zhang Zhiqing Qin Shiji Ye jinbing Zhao Fujian Provincial Key Laboratory of Advanced Technology and Information in Civil Engineering， Fujian University of Technology Fujian Communications Planning & Design Institute Co.，Ltd. 3. Haoyao Times (Fujian) Group Co.，Ltd.

In order to investigate the simplified calculation method of the rebound model of the grouted sleeve and mortise-and-tenon hybrid-connected assembled reinforced concrete piers， quasi-static tests were conducted on three types of piers: cast-in-place piers (SZT-1)， single-span assembled piers (SG-1)， and double-span assembled piers (SGT-1). It was found that the damage modes and seismic performance of the SGT-1 specimens were similar to those of SG-1， while the seismic performance of the hybrid-connected assembled piers was better than that of SZT-1. Parametric analyses were carried out using experimentally-validated finite-element models to investigate the effects of parameters such as axial compression ratio， slenderness ratio， longitudinal reinforcement ratio， concrete strength， and the dimensions and materials of the protruding tenon and steel pipe on the seismic performance of the piers. In addition， the skeleton curve eigenvalue formula and rebound model are proposed， which can be used for elastic-plastic analysis and calculation of hybrid connection assembled piers.

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Slope safety control during mining below a landslide

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Science China(Technological Sciences) 2005年第z1期48卷 47-52页

作者： MIN Hong1, DENG Jianhui1, WEI jinbing1, zhang Qizhong2, ZOU Jiangang2 & ZHOU Zhibin2 1. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 2. Daye Iron Mine of WISCO, Tieshan, Daye 435006, China Institute of Rock and Soil Mechanics Chinese Academy of Sciences

The East Open Pits of Daye Iron Mine were closed in year 2000 and the ore beyond the pit limit was planned to be mined by underground ways. In order to facilitate the smooth transition to underground mining, hanging-wall ores in the old pits were scheduled to be mined. Xiangbishan pit is one of the four mining spots selected. In 1979 when the pit was mined to around 36 m a.s.l., a landside of around 70000 m3 occurred in its North Slope, leading to the closure of the pit. The pit was then backfilled to 60 m a.s.l. to maintain the slope stability. The hanging-wall ore to be mined is just located below the old slide, so whether the slide will be reactivated and how to control its deformation and stability are the key issues concerned. Based on geological investigation and numerical analysis, it was predicted that the slide would be reactivated and a control measure using the intact ore body as a retaining wall was thus suggested. During mining, displacements were monitored to assure safety. By July, 2003, 383000 tons of ore were successfully mined. Though the observed displacement reached 8795 mm, no major failure happened. The final slope is 110 m high with an angle of 70°.

关键词： open pit mine, hanging-wall ore mining, landslide, control measure, retaining wall.

Anion type-dependent confinement effect on glass transitions of solutions of LiTFSI and LiFSI

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Chinese Physics B 2023年第7期32卷 453-457页

作者：张晋兵王凤平曹则贤王强 School of Mathematics and Physics University of Science and Technology BeijingBeijing 100083China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China

We present findings on the effect of nanometer-sized silica-based pores on the glass transition of aqueous solutions of lithium bis(trifluoromethane)sulfonimide(LiTFSI)and lithium difluorosulfimide(LiFSI),*** experimental results demonstrate a clear dependence of the confinement effect on the anion type,particularly for water-rich solutions,in which the precipitation of crystalized ice under cooling process induces the formation of freeze-concentrated phase confined between pore wall and core *** this liquid layer becomes thinner,the freeze-concentrated phase experiences glass transition at increasingly higher temperatures in solutions of ***,differently,for solutions of LiFSI and LiCl,this secondary confinement has a negligible effect on the glass transition of solutions confined *** different behaviors emphasize the obvious difference in the dynamic properties’response of LiTFSI and LiFSI solutions to spatial confinement and particularly to the presence of the hydrophilic pore wall.

关键词： anion type-dependent confinement effect glass transition Li salts aqueous solutions

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刘家梁煤矿长距离局部通风技术应用研究

山西焦煤科技 2019年第9期43卷 30-33页

作者：张晋兵大同煤矿集团轩岗煤电有限公司刘家梁煤矿

为了改善刘家梁煤矿长距离掘进通风的效率,通过理论分析计算、数值模拟、现场试验效果检验等方法对矿井已有的长距离局部通风方式进行优化分析。采用gambit建模,对不同风速下瓦斯浓度分布云图进行比较分析,结果显示在工作面和涡流处瓦... 详细信息

为了改善刘家梁煤矿长距离掘进通风的效率,通过理论分析计算、数值模拟、现场试验效果检验等方法对矿井已有的长距离局部通风方式进行优化分析。采用gambit建模,对不同风速下瓦斯浓度分布云图进行比较分析,结果显示在工作面和涡流处瓦斯浓度最大,受回风大巷风流影响瓦斯浓度随之减小,从而为优化掘进通风技术提供技术指导。优化选择平行双巷通风技术,优化后风机有效风量率提高到82.5%,风机装机效率可提高到93.1%。

关键词：掘进巷道长距离局部通风平行双巷瓦斯浓度

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固相法合成纳米氧化锌

无机盐工业 2005年第7期37卷 18-20页

作者：章金兵许民周小英南昌大学化学系江西南昌330047

以Zn(NO3)2·6H2O和Na2C2O4为原料,先通过室温固相化学反应合成出前驱体ZnC2O4·2H2O再将前驱体在400℃热分解3h,得到产物纳米氧化锌。借助XRD和TEM等技术对产物进行了表征。结果表明,产物纳米氧化锌为粒度分布均匀的球形六方晶系结构,... 详细信息

以Zn(NO3)2·6H2O和Na2C2O4为原料,先通过室温固相化学反应合成出前驱体ZnC2O4·2H2O再将前驱体在400℃热分解3h,得到产物纳米氧化锌。借助XRD和TEM等技术对产物进行了表征。结果表明,产物纳米氧化锌为粒度分布均匀的球形六方晶系结构,平均粒径约为14nm。

关键词：纳米氧化锌固相合成前驱体