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Acta Mechanica Solida Sinica 2016年第5期29卷 536-546页

作者： Minghao Zhao Huayang Dang Guangtao Xu cuiying fan Henan Key Engineering Laboratory for Anti-fatigue Manufacturing Technology and School of Mechanical Engineering Zhengzhou University School of Mechanics & Engineering Science Zhengzhou University

The dielectric breakdown（DB） model for a penny-shaped crack under a semipermeable boundary condition in a three-dimensional piezoelectric medium is *** approximate analytical solution is derived by using the boundary integral equation with extended displacement discontinuity,and the corresponding boundary element method with double iterative approaches is developed to analyze the semi-permeable *** effect of electric boundary conditions on crack faces is discussed on the basis of DB *** comparing the DB model with the polarization saturation（PS） model for different piezoelectric materials,some interesting phenomena related to the electric yielding zone and local J-integral are observed.

关键词： piezoelectric iterative discontinuity approximate dielectric normalized breakdown saturation permeable coordinates

Ce and Se co-doped MBG/SA/HLC microgel bone powder for repairing tumor bone defects

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Nano Research 2023年第1期16卷 746-756页

作者： Miaolin fan Wan Liu cuiying fan Xiaoyan Zheng Junfeng Hui Chaoquan Hu Daidi fan Shaanxi Key Laboratory of Degradable Biomedical Materials Shaanxi R&D Center of Biomaterials and Fermentation EngineeringSchool of Chemical EngineeringNorthwest UniversityXi’an 710069China Biotech.&Biomed.Research Institute Northwest UniversityXi’an 710069China Xi’an Giant Biogene Technology Co. Ltd.Xi’an 710069China Nanjing IPE Institute of Green Manufacturing Industry Nanjing 211100China

The repair and treatment of tumor bone defects is a difficult problem to solve urgently in clinical *** tumor resection,patients are not only faced with a large area of bone defect,but also may have the risk of tumor recurrence,which can easily cause huge physical and mental harm to *** this study,we successfully designed and constructed an organic/inorganic composite microgel bone powder(S-H-M3%Ce/3%Se)based on cerium(Ce)and selenium(Se)elements co-doped mesoporous bioactive glass(M3%Ce/3%Se),sodium alginate(SA),and recombinant human-like collagen(HLC).The obtained S-H-M3%Ce/3%Se could inhibit the growth of osteoma cells and promote the growth of normal cells,and effectively promote the repair of defect *** integration of the“treatment and repair”organic/inorganic composite microgel bone powder provided a new strategy for the treatment of cancerous bone defects.

关键词： mesoporous bioactive glass functional elements osteoma inhibition bone repair

Interfacial fracture analysis for a two-dimensional decagonal quasi-crystal coating layer structure

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Applied Mathematics and Mechanics(English Edition) 2021年第11期42卷 1633-1648页

作者： Minghao ZHAO cuiying fan C.S.LU Huayang DANG School of Mechanics and Safety Engineering Zhengzhou UniversityZhengzhou 450001China School of Mechanical Engineering Zhengzhou UniversityZhengzhou 450001China School of Civil and Mechanical Engineering Curtin UniversityWestern Australia 6845Australia

The interface crack problems in the two-dimensional(2D)decagonal quasicrystal(QC)coating are theoretically and numerically investigated with a displacement discontinuity *** 2D general solution is obtained based on the potential *** analogy method is proposed based on the relationship between the general solutions for 2D decagonal and one-dimensional(1D)hexagonal *** to the analogy method,the fundamental solutions of concentrated point phonon displacement discontinuities are obtained on the *** using the superposition principle,the hypersingular boundary integral-differential equations in terms of displacement discontinuities are determined for a line interface ***,Green’s functions are found for uniform displacement discontinuities on a line *** oscillatory singularity near a crack tip is eliminated by adopting the Gaussian distribution to approximate the delta *** stress intensity factors(SIFs)with ordinary singularity and the energy release rate(ERR)are ***,a boundary element method is put forward to investigate the effects of different factors on the fracture.

关键词： two-dimensional(2D)decagonal quasi-crystal(QC)coating interface crack analogy method displacement discontinuity stress intensity factor(SIF) energy release rate(ERR)

Three-dimensional interfacial fracture analysis of a one-dimensional hexagonal quasicrystal coating

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Applied Mathematics and Mechanics(English Edition) 2022年第12期43卷 1901-1920页

作者： Xin ZHANG Minghao ZHAO cuiying fan C.S.LU Huayang DANG School of Mechanics and Safety Engineering Zhengzhou UniversityZhengzhou 450001China School of Mechanical Engineering Zhengzhou UniversityZhengzhou 450001China School of Civil and Mechanical Engineering Curtin UniversityWestern Australia6845Australia

In this paper, the three-dimensional(3D) interfacial fracture is analyzed in a one-dimensional(1D) hexagonal quasicrystal(QC) coating structure under mechanical loading. A planar interface crack with arbitrary shape is studied by a displacement discontinuity method. Fundamental solutions of interfacial concentrated displacement discontinuities are obtained by the Hankel transform technique, and the corresponding boundary integral-differential equations are constructed with the superposition ***’s functions of constant interfacial displacement discontinuities within a rectangular element are derived, and a boundary element method is proposed for numerical *** singularity of stresses near the crack front is investigated, and the stress intensity factors(SIFs) as well as energy release rates(ERRs) are determined. Finally, relevant influencing factors on the fracture behavior are discussed.

关键词： one-dimensional(1D)hexagonal quasicrystal(QC)coating displacement discontinuity method interface crack rectangular element stress intensity factor(SIF) energy release rate(ERR)

Thermal-induced interfacial behavior of a thin one-dimensional hexagonal quasicrystal film

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Applied Mathematics and Mechanics(English Edition) 2023年第5期44卷 841-856页

作者： Huayang DANG Dongpei QI Minghao ZHAO cuiying fan C.S.LU School of Mechanics and Safety Engineering Zhengzhou UniversityZhengzhou 450001China School of Mechanical Engineering Zhengzhou UniversityZhengzhou 450001China School of Civil and Mechanical Engineering Curtin UniversityWestern Australia 6845Australia

In this paper,we investigate the interfacial behavior of a thin one-dimensional(1D)hexagonal quasicrystal(QC)film bonded on an elastic substrate subjected to a mismatch strain due to thermal *** contact interface is assumed to be nonslipping,with both perfectly bonded and debonded boundary *** Fourier transform technique is adopted to establish the integral equations in terms of interfacial shear stress,which are solved as a linear algebraic system by approximating the unknown phonon interfacial shear stress via the series expansion of the Chebyshev *** expressions are explicitly obtained for the phonon interfacial shear stress,internal normal stress,and stress intensity factors(SIFs).Finally,based on numerical calculations,we briefly discuss the effects of the material mismatch,the geometry of the QC film,and the debonded length and location on stresses and SIFs.

关键词： one-dimensional(1D)hexagonal quasicrystal(QC)film stress intensity factor(SIF) thermal variation Chebyshev polynomial interfacial behavior

High efficiency production of ginsenoside compound K by catalyzing ginsenoside Rb1 using snailase

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Chinese Journal of Chemical Engineering 2018年第7期26卷 1591-1597页

作者： Zhiguang Duan Chenhui Zhu Jingjing Shi Daidi fan Jianjun Deng Rongzhan Fu Rong Huang cuiying fan Shaanxi Key Laboratory of Degradable Biomedical Materials School of Chemical EngineeringNorthwest UniversityTaibai North Road 229Xi'an 710069China Shanxi R&D Center of Biomaterials and Fermentation Engineering School of Chemical Engineering Northwest University Taibai North Road 229Xi'an 710069China

The rare ginsenoside Compound K （C-K） is attracting more attention because of its good physiological activity and urgent need. There are many pathways to obtain ginsenoside C-K, including chemical and biological methods. Among these, the conversion of PPD-type ginsenosides by enzymatic hydrolysis is a trend due to its high efficiency and mild conditions. For effectively extracting from the other panaxadiol saponins, the conversion process for ginsenoside C-K was investigated using snailases in this study. The univariate experimental design and response surface methodology were used to determine the optimal hydrolysis conditions for the conversion of ginsenoside Rbl into ginsenoside C-K by snailases. The optimum conditions were as follows： pH 5,12, temperature 51 ℃, ratio of snailase/substrate 0.21, and reaction time 48 h. On the basis of these parameters, the addition of 1.0 mmol· L- 1 ferric ion was found to significantly improve the enzymolysis ofsnailases for the first time. With the above conditions, the maximum conversion rate reached 89.7%, suggesting that the process can obviously increase the yield of ginsenoside C-K. The bioassay tests indicated that the ginsenoside C-K showed anti-tumor activity in a series of tumor cell lines. Based on these results, we can conclude that the process of rare ginsenoside C- K production by enzymolysis with snailase is feasible, efficient, and suitable for the industrial production and application.

关键词： Ginsenoside Rb1 Ginsenoside Compound K Snailase Enzymolysis

Natural frequency analysis of laminated piezoelectric beams with arbitrary polarization directions

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Applied Mathematics and Mechanics(English Edition) 2024年第11期45卷 1949-1964页

作者： Zhi LI cuiying fan Mingkai GUO Guoshuai QIN Chunsheng LU Dongying LIU Minghao ZHAO School of Mechanics and Safety Engineering Zhengzhou UniversityZhengzhou450001China School of Electromechanical Engineering Henan University of TechnologyZhengzhou450001China School of Civil and Mechanical Engineering Curtin UniversityPerthWestern Australia6845Australia School of Civil Engineering Guangzhou UniversityGuangzhou510006China Henan Province Industrial Science&Technology Institute for Anti-fatigue Manufacturing Zhengzhou450001China Henan Province Engineering Research Center of Anti-fatigue Manufacturing Technology Zhengzhou450001China

Piezoelectric devices exhibit unique properties that vary with different vibration modes,closely influenced by their polarization *** paper presents an analysis on the free vibration of laminated piezoelectric beams with varying polarization directions,using a state-space-based differential quadrature ***,based on the electro-elasticity theory,the state-space method is extended to anisotropic piezoelectric materials,establishing state-space equations for arbitrary polarized piezoelectric beams.A semi-analytical solution for the natural frequency is then obtained via the differential quadrature *** study commences by examining the impact of a uniform polarization direction,and then proceeds to analyze six polarization schemes relevant to the current research and ***,the effects of geometric dimensions and gradient index on the natural frequencies are *** numerical results demonstrate that varying the polarization direction can significantly influence the natural frequencies,offering distinct advantages for piezoelectric elements with different *** research provides both theoretical insights and numerical methods for the structural design of piezoelectric devices.

关键词： piezoelectric laminated beam free vibration arbitrary polarization state-space equation differential quadrature method natural frequency

Simulation of influence of multi-defects on long-term working performance of high arch dam

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Science China(Technological Sciences) 2011年第S1期54卷 1-8页

作者： ZHANG GuoXin ,LIU Yi,ZHENG cuiying & FENG fan State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,Beijing 100038,China China Institute of Water Resources and Hydropower Research,Beijing 100038,China State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin Beijing China

As an integrated structure,an arch dam is assumed to bear loads in its design ***,multi-defects,such as cracks and the opening of transverse joints,are unavoidable during construction and ***-defects will reduce the structural integrity and stiffness of the dam and affect its working performance and degree of *** the current paper,a numerical model of defects and a simulation method of a high arch dam are *** Chencun arch dam is analyzed as a case *** entire course simulation analysis of the Chencun arch dam from construction to operation is carried out,through which the opening of the transverse and longitudinal joints,formation of cracks,and their influence on deformation and stress of the dam are *** to the results of the analysis,appropriate measures should be adopted to prevent the development of cracks,and observation should be strengthened for a more timely discovery of risks.

关键词： high arch dam crack multi-defects working performance

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压电半导体的极化处理及性能研究

半导体光电 2019年第6期40卷 842-845,890页

作者：张鑫范翠英郑州大学力学与安全工程学院

极化处理是压电半导体材料制备及构件设计中的关键工艺,直接影响着其压电性能。根据夹层极化的方法,研制出一种多样性极化实验装置,解决了压电半导体的极化问题,并对极化后的GaN材料性能进行了系统研究。实验结果表明:(1)极化使GaN材料... 详细信息

极化处理是压电半导体材料制备及构件设计中的关键工艺,直接影响着其压电性能。根据夹层极化的方法,研制出一种多样性极化实验装置,解决了压电半导体的极化问题,并对极化后的GaN材料性能进行了系统研究。实验结果表明:(1)极化使GaN材料具备了压电性能,改变了其力电性能参数;(2)极化显著提高了压电半导体的导电能力,改变了其弯曲强度。

关键词：压电半导体 GaN 极化装置压电性能力电性能

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青少年网络欺负行为研究述评与展望

中国特殊教育 2013年第5期 83-87,71页

作者：胡阳范翠英青少年网络心理与行为教育部重点实验室华中师范大学心理学院武汉430079

网络欺负是在电子通信技术发展过程中出现的一种新的欺负形式,具有目的性、反复性和力量不平衡性的特征,其给青少年带来的危害已引起了教育界的关注。同时年龄、性别等个体因素,亲子关系、父母调节等家庭因素以及暴力环境、社会支持、... 详细信息

网络欺负是在电子通信技术发展过程中出现的一种新的欺负形式,具有目的性、反复性和力量不平衡性的特征,其给青少年带来的危害已引起了教育界的关注。同时年龄、性别等个体因素,亲子关系、父母调节等家庭因素以及暴力环境、社会支持、文化等社会环境都会对网络欺负产生影响。基于已有的研究,本文分别从研究的方法、对象及内容三方面展望了网络欺负未来的研究方向。

关键词：欺负网络欺负青少年