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Study on Diffusion Behavior of 72LX Blooms in the Decarburization Process

Journal of Wuhan University of Technology(Materials Science) 2022年第4期37卷 716-721页

作者： XU Dong ZHENG bing PANG Hongxuan WANG Xuexi zou Zhipeng Technology Innovation Center for High Quality Cold Heading Steel of Hebei Province Hebei University of EngineeringHandan 056038China Technology Center Zhongyuan Special Steel Equipment Manufacturing Co.LtdAnshan 114051China School of Materials and Metallurgy University of Science and Technology LiaoningJiyuan 459008China Engineering Research Center for High Toughness Wind Tower Steel of Hebei Province Hebei Puyang Iron and Steel Co.LtdHandan 056305China

To elucidate the diffusion behavior of carbon atoms within the austenite region,the decarbonization of 72LX steel bloom was *** studies were performed to obtain the depth profiles of the decarburized layers within the temperature range of 950-1250℃.The findings show that,within a temperature range of 950-1200℃,both the depth of the decarburization layer of the grain interior(h_(in))and the depth of the decarbonization effect zone of the grain boundary(h_(b))increase concurrently with increasing holding temperatures and times and an inflection point is observed at 1200℃.By measuring the change in the sample diameter before and after the experiment,the change in the radius reduction of h_(Fe) causes by oxidation is *** changes are observed in h_(Fe) when the temperature is below 1050℃.As the temperature increases to 1100℃,a sudden change in h_(Fe) is observed,which corresponds to a rapid increase in *** temperatures above 1100℃,a more gradual change is *** the experimental results,a two-dimensional decarburization mathematical model is established and the carbon diffusion coefficients at different temperatures are obtained by simulation and regression *** simulation values obtain from the carbon diffusion model matched well with the experimental values,thereby confirming the accuracy of the simulation process.

关键词： 72LX steel diffusion behavior diffusion coefficient decarburized layer

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Hydrothermal Treatment of Sol-Gel TiO_2 Film

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稀有金属材料与工程 2006年第A03期35卷 570-571页

作者： Shaohua Zhang bing Xie Fengyi Li Tude zou School of Materials Nanchang University Jiangxi 330047 China Center of Analysis and Test Nanchang University Jiangxi 330047 China School of Science Nanchang University Jiangxi 330047 China

The preparation of TiO_2 film has been an important research *** our work,we obtained the TiO_2 film by hydrothermal treating the amorphous film prepared by sol-gel method or the hydrolysis of titanium *** influence of temperature and duration time on the film properties was *** photo degradation of methyl orange in aqueous solution of the film was *** films were characterized by XRD and Uv-Vis spectroscope.

关键词： titania film hydrothermal sol-gel

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In vivo imaging reveals mature Oligodendrocyte division in adult Zebrafish

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Cell Regeneration 2021年第1期10卷 188-200页

作者： Suqi zou bing Hu Institute of Life Science Nanchang UniversityNanchangJiangxi 330031P.R.China School of Life Sciences Nanchang UniversityNanchangJiangxi 330031P.R.China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaHefeiAnhui 230026P.R.China

Whether mature oligodendrocytes(mOLs)participate in remyelination has been disputed for several ***,some studies have shown that mOLs participate in remyelination by producing new ***,whether mOLs can produce new oligodendrocytes by asymmetric division has not been *** is a perfect model to research remyelination compared to other *** this study,optic nerve crushing did not induce local mOLs *** optic nerve transplantation from olig2:eGFP fish to AB/WT fish,olig2^(+)cells from the donor settled and rewrapped axons in the *** identifying these rewrapping olig2^(+)cells as mOLs at 3 months posttransplantation,in vivo imaging showed that olig2^(+)cells ***,in vivo imaging of new olig2^(+)cell division from mOLs was also captured within the ***,fine visual function was renewed after the remyelination program was *** conclusion,our in vivo imaging results showed that new olig2^(+)cells were born from mOLs by asymmetric division in adult zebrafish,which highlights the role of mOLs in the progression of remyelination in the mammalian CNS.

关键词： Remyelination Mature oligodendrocyte Zebrafish In vivo imaging Asymmetric division

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Graph Embedding Based API Graph Search and Recommendation

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Journal of Computer Science & Technology 2019年第5期34卷 993-1006页

作者： Chun-Yang Ling Yan-Zhen zou Ze-Qi Lin bing Xie Key Laboratory of High Confidence Software Technologies Ministry of EducationBeijing 100871China School of Electronics Engineering and Computer Science Peking UniversityBeijing 100871China

Searching application programming interfaces (APIs) is very important for developers to reuse software projects. Existing natural language based API search mainly faces the following challenges. 1) More accurate results are required as software projects evolve to be more heterogeneous and complex. 2) The semantic relationships between APIs (e.g., inheritances between classes, and invocations between methods) need to be illustrated so that developers can better understand their usage scenarios. To deal with these issues, we propose GeAPI, a novel graph embedding based approach for API graph search and recommendation in this paper. First, we build a software project’s API graph automatically from its source code and represent each API using graph embedding methods. Second, we search the API graph with a question in natural language, and return the corresponding subgraph that is composed of relevant code elements and their associated relationships, as the best answer of the question. In experiments, we select three well-known open source projects, JodaTime, Apache Lucene and POI, as examples to perform API search tasks. The experimental results show that our approach GeAPI improves F1-score by 10% compared with the existing shortest path based API search approach, while reduces the average response time about 60 times.

关键词： application programming interface (API) recommendation API graph graph embedding software reuse

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Smooth-optimal Adaptive Trajectory Tracking Using an Uncalibrated Fish-eye Camera

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International Journal of Automation and computing 2020年第2期17卷 267-278页

作者： Zhao-bing Kang Wei zou Zheng Zhu Hong-Xuan Ma Institute of Automation Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100190China

This paper presents a two-stage smooth-optimal trajectory tracking *** from existing methods,the optimal trajectory tracked point can be directly determined in an uncalibrated fish-eye *** the first stage,an adaptive trajectory tracking controller is employed to drive the tracking error and the estimated error to an arbitrarily small neighborhood of ***,an online smooth-optimal trajectory tracking planner is proposed,which determines the tracked point that can be used to realize smooth motion control of the mobile *** tracked point in the uncalibrated image can be determined by minimizing a utility function that consists of both the velocity change and the sum of cross-track *** performance of our planner is compared with other tracked point determining methods in experiments by tracking a circular trajectory and an irregular *** results show that our method has a good performance in both tracking accuracy and motion smoothness.

关键词： Smooth motion adaptive control trajectory tracking wheeled mobile robots visual servoing

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The application of three-dimensional hydroelastic analysis of ship structures in Pekeris hydro-acoustic waveguide environment

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Acta Mechanica Sinica 2014年第1期30卷 59-66页

作者： Ming-song zou You-Sheng Wu Yan-Min Liu China Ship Scientific Research Center

The hydroelastic analysis and sonoelastic analysis methods are incorporated with the Green＇s function of the Pekeris ocean hydro-acoustic waveguide model to produce a three-dimensional sonoelastic analysis method for ships in the ocean hydro-acoustic environment. The seabed condition is represented by a penetrable boundary of prescribed density and sound speed. This method is employed in this paper to predict the vibration and acoustic radiation of a 1 500 t Small Water Area Twin Hull （SWATH） ship in shallow sea acoustic environment. The wet resonant frequencies and radiation sound source levels are predicted and compared with the measured results of the ship in trial.

关键词： Hydroelasticity Sonoelasticity Acousticwaves Shallow sea Free surface effect Seabed effect -SWATH ship

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Peak Dynamic Pressure on Semi-and Quarter-Circular Breakwaters Under Wave Troughs

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China Ocean Engineering 2017年第2期31卷 151-159页

作者： JIANG Xue-lian zou Qing-ping song Ji-ning State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin University Tianjin Key Laboratory of Soft Soil Characteristics & Engineering Environment School of Civil EngineeringTianjin Chengjian University Department of Civil and Environmental Engineering The University of Maine State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University

A series of physical tests are conducted to examine the characteristics of the wave loading exerted on circular-front breakwaters by regular waves. It is found that the wave trough instead of wave crest plays a major role in the failure of submerged circular caissons due to seaward sliding. The difference in the behavior of seaward and shoreward horizontal wave forces is explained based on the variations of dynamic pressure with wave parameters. A wave load model is proposed based on a modified first-order solution for the dynamic pressure on submerged circular-front caissons under a wave trough. This wave loading model is very useful for engineering design. Further studies are needed to include model uncertainties in the reliability assessment of the breakwater.

关键词： semicircular breakwater quarter-circular breakwater wave trough load seaward wave force shoreward wave force

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Porous Organic Cage‑Based Quasi‑Solid‑State Electrolyte with Cavity‑Induced Anion‑Trapping Effect for Long‑Life Lithium Metal Batteries

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Nano-Micro Letters 2025年第2期17卷 376-386页

作者： Wei-Min Qin Zhongliang Li Wen‑Xia Su Jia‑Min Hu Hanqin zou Zhixuan Wu Zhiqin Ruan Yue‑Peng Cai Kang Li Qifeng Zheng School of Chemistry South China Normal UniversityGuangzhou 510006People’s Republic of China Key Laboratory of Functional Metal‑Organic Compounds of Hunan Province College of Chemistry and Material ScienceHengyang Normal UniversityHengyang 421008People’s Republic of China Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials Guangzhou 510006People’s Republic of China

Porous organic cages(POCs)with permanent porosity and excellent host–guest property hold great potentials in regulating ion transport behavior,yet their feasibility as solid-state electrolytes has never been testified in a practical ***,we design and fabricate a quasi-solid-state electrolyte(QSSE)based on a POC to enable the stable operation of Li-metal batteries(LMBs).Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC,the resulting POC-based QSSE exhibits a high Li+transference number of 0.67 and a high ionic conductivity of 1.25×10^(−4) S cm^(−1) with a low activation energy of 0.17 *** allow for homogeneous Li deposition and highly reversible Li plating/stripping for over 2000 *** a proof of concept,the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85%capacity retention after 1000 ***,our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems,such as Na and K batteries.

关键词： Porous organic cage Cavity-induced anion-trapping Quasi-solid-state electrolyte Homogeneous Li+flux Lithium metal battery

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Effects of soil dynamic response on post-earthquake deformation of slopes based on nested Newmark model

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Earthquake Engineering and Engineering Vibration 2020年第3期19卷 573-582页

作者： Zhou Zheng Gao Yufeng Zhang Fei song Jian zou Degao Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering Hohai UniversityNanjing 210098China The State Key Laboratory of Coastal and Offshore Engineering Dalian University of TechnologyDalian 116024China

Nested Newmark model(NNM)can obtain the post-earthquake profile of the slopes in limit equilibrium or limit analysis *** purpose of this study is to extend the NNM from the limit equilibrium method to a limit analysis method,and then involve the dynamic response of slopes into the prediction of the permanent displacement based on decoupled *** studies are carried out to further investigate the influences of slope height,soil shear wave velocity and input ground *** calculated results indicate that neglecting the dynamic response of slopes can underestimate the post-earthquake *** the slope height increases or shear wave velocity reduces,the underestimation is more *** the fundamental natural period of the site,the underestimation is particularly *** induced earthquake waves with a small value of mean period,the influence of the dynamic response can be ignored when the fundamental period deviates from the mean period.

关键词： soil dynamic limit

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Effects of oceanic ice cover and density stratification on the propagation of hydroacoustic waves

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Journal of Hydrodynamics 2022年第6期34卷 1151-1155页

作者： Ya-dong Liu Dong-qiang Lu Ming-song zou Shanghai Institute of Applied Mathematics and Mechanics School of Mechanics and Engineering ScienceShanghai UniversityShanghai200072China China Ship Scientific Research Center Wuxi214082China Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai200072China

The propagation characteristic of hydroacoustic waves is studied for an ideal compressible two-layer fluid with different densities covered by an elastic ice *** conditions are simplified by adopting linear assumption and then the dispersion relation is *** analysis and visualization of the dispersion relation present the introduction of compressibility leads to the appearance of hydroacoustic wave modes while the density stratification leads to the appearance of interfacial wave *** ice thickness and the density ratio of the two fluid layers increase the wave number and group speed of hydroacoustic waves at the same frequency while the phase speed decreases.

关键词： Ocean ice sheet density stratified fluid hydroacoustic propagation

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