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Journal of Bionic Engineering 2007年第2期4卷 123-131页

作者： hai-bo jiang College of Mechanic and Electrical Engineering China University of Mining and Technology Xuzhou 221008 P. R. China

Four different structural models of artificial joints were developed and the finite element method （FEM） was employed to investigate their mechanical characteristics under static and dynamic conditions. The materials used in the FEM calculation were ultra-high molecular weight polyethylene （UHMWPE）, 316L stainless steel, CoCrMo alloy and Ti6A14V alloy. The stress distribution, strain, and elastic deformation under static and dynamic conditions were obtained. Analysis and comparison of the ~alculation results of different models were conducted. It is shown that with the same parameters the model of a metallic femur head covered with an artificial cartilage layer is more similar to the structure of the natural human joint and its mechanical characteristics are the best of the four models.

关键词： finite element analysis stress articular joint

Indirect Adaptive Fuzzy and Impulsive Control of Nonlinear Systems

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International Journal of Automation and computing 2010年第4期7卷 484-491页

作者： hai-bo jiang School of Mathematics Yancheng Teachers University Yancheng 224002 PRC

The problem of indirect adaptive fuzzy and impulsive control for a class of nonlinear systems is investigated. Based on the approximation capability of fuzzy systems, a novel adaptive fuzzy and impulsive control strategy with supervisory controller is developed. With the help of a supervisory controller, global stability of the resulting closed-loop system is established in the sense that all signals involved are uniformly bounded. Furthermore, the adaptive compensation term of the upper bound function of the sum of residual and approximation error is adopted to reduce the effects of modeling error. By the generalized Barbalat＇s lemma, the tracking error between the output of the system and the reference signal is proved to be convergent to zero Asymptotically. Simulation results illustrate the effectiveness of the proposed approach.

关键词： Fuzzy control adaptive control impulsive control generalized Barbalat's lemma.

Computational fluid dynamics simulation and experimental analysis of ultrafine powder suspension

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Rare Metals 2020年第7期39卷 850-860页

作者： Wang-Chao Wu Jian Cui Hao jiang hai-bo jiang Chun-Zhong Li School of Materials Science and Engineering East China University of Science and TechnologyShanghai 200237China

The suspension characteristics of ultrafine powder slurry in the stirred vessel were simulated by using computational fluid *** results show that the Rushton disk turbine impeller is more conducive to maintaining suspended homogeneity and circulation of slurry compared with the pitch blade turbine pumping up impeller and the pitch blade turbine pumping down *** the increase in stirring speed enhances turbulent fluctuation and anisotropic velocity of the fluid at the cost of more power consumption,which improves dispersibility and suspensibility of the ***,the change of impeller clearance has a weak influence on the flow pattern,and the impeller clearance of 0.32T(T is the diameter of the bottom of the reactor)can achieve better dispersivity and suspensibility of the particles with lower power consumption and larger axial *** experiments of surface coating modification of ultrafine titanium dioxide(TiO2)were carried out under the same conditions for those of the simulation *** surface film morphology and photocatalytic properties of the modified TiO2 were analyzed,and the obtained data are well consistent with the simulation results.

关键词： Computational fluid dynamics simulation Ultrafine powder slurry Suspension quality Impeller type Stirring speed Impeller clearance

Effect of pyridone agent on blood-retinal barrier in diabetic mice

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International Journal of Ophthalmology(English edition) 2017年第6期10卷 890-895页

作者： Si-Qi Xiong hai-bo jiang Hui-Zhuo Xu Xiao-bo Xia Department of Ophthalmology Xiangya Hospital Central South University Changsha 410008 Hunan Province China

AIM： To evaluate the therapeutic effect of fluorofenidone on disrupted blood-retinal barrier in the diabetic mice and uncover its underlying mechanism. METHODS： db/db mice were randomly chosen for treatment with daily doses of fluorofenidone or placebo at 5-week-old, treatment continued until mice reach 24-week- old. Then, expression of transcriptiona factor insulin gene enhancer binding protein-1 （Islet-I） and vascular endothelial growth factor （VEGF） in murine retinas were evaluated. Retinal vascular permeability was assessed by examining the level of albumin in db/db murine retinas. Furthermore, the retinal vessel tight junction was estimated by checking the level of occludin in the murine retinal tissues. RESULTS： After occurrence of diabetic retinopthy in db/ db mice, expressions of transcritpional factor Islet-1 was found to be upregulated in db/db murine retinas compared with non-diabetic controls. Similar to expression pattern of Islet-l, VEGF were also demonstrated to be increased in retinas of db/db mice, which was accompanied by increased retinal vascular leakage and decreased tight junction protein level. Systemetic administration of fluorofenidone repaired broken retinal vascular tight junction by restoring occludin expression in db/db retinal tissue. Consequently, retinal vascular premeability were indicated to be reduced by examining the transudative albumin level in diabetic retinal tissues. both Islet-1 and VEGF expression were inhibited in the retinas of db/db mice after treatment with fluorofenidone. CONCLUSION： Fluorofenidone significantly protectes retinal tight junction and reduces retinal vascular leakage. The phenomenon can be partially attributed to reducing overexpression of Islet-1 and VEGF in diabetic retinal tissues.

关键词： pyridone agent diabetic retinopathy blood-retinal barrier

Photoactive Poly（aryl ether）s Containing Azobenzene Moieties on Pendants for Fabrication of Thermal Stable Surface Relief Gratings

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Chemical Research in Chinese Universities 2013年第2期29卷 384-388页

作者： XU Da ZHANG Yu-xuan REN Dian-fu CHEN Xing-bo ZHANG hai-bo jiang Zhen-hua College of Chemistry Jilin University Changchun 130012 P. R. China

A series of azobenzene functionalized poly（aryl ether） copolymers（azo-PAEs） containing azo moieties on pendants was prepared by direct copolymerization. The amount of azobenzene chromophores could be controlled by the feed ratio of azo-monomer. Their chemical structures and properties were characterized by means of infrared（IR） spectrometry, UV-Vis, hydrogen nuclear magnetic resonance（Ill NMR）, difference scanning calorimetry（DSC）, and thermogravimetric analysis（TGA）. The results suggest that azo-PAEs had high glass transition temperatures（Tgs） and good thermal stability. By exposing their spin-coated films to an interference pattern laser beam, azo-PAEs could be used for the fabrication of thermal stable surface relief gratings（SRGs）.

关键词： Azo polymer Poly(aryl ether) Surface relief grating Photoactive

A novel class of two-dimensional chaotic maps with infinitely many coexisting attractors

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Chinese Physics B 2020年第6期29卷 109-114页

作者： Li-Ping Zhang Yang Liu Zhou-ChaoWei hai-bo jiang Qin-Sheng Bi Faculty of Civil Engineering and Mechanics Jiangsu UniversityZhenjiang 212013China School of Mathematics and Statistics Yancheng Teachers UniversityYancheng 224002China College of Engineering Mathematics and Physical SciencesUniversity of ExeterExeter EX44QFUK School of Mathematics and Physics China University of GeosciencesWuhan 430074China

We study a novel class of two-dimensional maps with infinitely many coexisting ***,the mathematical model of these maps is formulated by introducing a sinusoidal *** existence and the stability of the fixed points in the model are studied indicating that they are infinitely many and all *** particular,a computer searching program is employed to explore the chaotic attractors in these maps,and a simple map is exemplified to show their complex ***,this map contains infinitely many coexisting attractors which has been rarely reported in the *** studies on these coexisting attractors are carried out by investigating their time histories,phase trajectories,basins of attraction,Lyapunov exponents spectrum,and Lyapunov(Kaplan–Yorke)*** analysis reveals that the map has periodic and chaotic solutions,and more importantly,exhibits extreme multi-stability.

关键词： two-dimensional map infinitely many coexisting attractors extreme multi-stability chaotic attractor

A class of two-dimensional rational maps with self-excited and hidden attractors

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Chinese Physics B 2022年第3期31卷 224-233页

作者： Li-Ping Zhang Yang Liu Zhou-Chao Wei hai-bo jiang Qin-Sheng Bi Faculty of Civil Engineering and Mechanics Jiangsu UniversityZhenjang 212013China School of Mathematics and Statistics Yancheng Teachers UniversityYancheng 224002China College of Engineering Mathematics and Physical SciencesUniversity of ExeterExeter EX44QFUK School of Mathematics and Physics China University of GeosciencesWuhan 430074China

This paper studies a new class of two-dimensional rational maps exhibiting self-excited and hidden attractors. The mathematical model of these maps is firstly formulated by introducing a rational term. The analysis of existence and stability of the fixed points in these maps suggests that there are four types of fixed points, i.e., no fixed point, one single fixed point, two fixed points and a line of fixed points. To investigate the complex dynamics of these rational maps with different types of fixed points, numerical analysis tools, such as time histories, phase portraits, basins of attraction, Lyapunov exponent spectrum, Lyapunov(Kaplan–Yorke) dimension and bifurcation diagrams, are employed. Our extensive numerical simulations identify both self-excited and hidden attractors, which were rarely reported in the literature. Therefore, the multi-stability of these maps, especially the hidden one, is further explored in the present work.

关键词： two-dimensional rational map hidden attractors multi-stability a line of fixed points chaotic attractor

Synthesis of well-defined functional crystals by high temperature gas-phase reactions

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Chinese Science Bulletin 2014年第18期59卷 2135-2143页

作者： hai-bo jiang Lin-Feng Pan Peng-Fei Liu Wen-Qi Fang Hua-Gui Yang Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and EngineeringEast China University of Science and Technology Centre for Clean Environment and Energy Griffith UniversityGold Coast CampusBrisbaneQLD 4222Australia

Over the past decades,there have been many synthesis methods on producing well-defined crystals,due to their enormous application potentials in industrial *** them,high temperature gas-phase reactions(HTGR)approach may be one of the most promising processes for fabrication of well-defined crystals with controllable structure,size,shape,and *** review is focused on the recent progresses in synthesizing well-defined crystalline TiO2dominated with,respectively,{001}facets and{105}facets,one-dimensional ZnO and SnO2nanorods/nanowires,MoS2nanosheets as well as GaP,InP,and GaAs nanowires via HTGR *** these research works were currently carried out on experimental scale,it is worth to note that the industrial importance of this HTGR approach for design and fabrication of well-defined crystals in the future owing to its advantages of continuous and scalable production with controlled dimensions and low cost.

关键词：高温气冷堆气相反应多晶体定义反应合成 SnO2纳米棒纳米二硫化钼工业领域

Treatment of myopic foveoschisis via macular buckling and vitrectomy

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International Journal of Ophthalmology(English edition) 2017年第5期10卷 815-818页

作者： Si-Qi Xiong hai-bo jiang Fang-Ling Li Yan-Xiu Li Jie Yang Xiao-bo Xia Hui-Zhuo Xu Department of Ophthalmology Xiangya Hospital Central South University Changsha 410008 Hunan Province China

The aim of the present study was to evaluate the efficacy and safety of the treatment of myopic foveoschisis patients using the macular buckling with L-shaped titanium plate and silicon sponge combined with vitrectomy. The data of the patients who underwent macular buckling combined with vitrectomy was collected. The study recorded the following parameters：best corrected visual acuity（BCVA）, axial length, intraocular pressure, central macular thickness, and the position of the titanium plate. Following the surgery, the BCVA of the included patients were improved, whereas the axial lengths were reduced followed by resolution of the foveoschisis compared with that noted prior to the operations. All patients had orbital CT examination and the results indicated that the titanium plates were appropriately placed and were not in contact with the optic nerve. Therefore, it is effective to treat myopic foveaschisis by macular buckling using the L-shaped titanium plate and silicon sponge in the presence of vitrectomy.

关键词： myopic foveoschisis macular buckling vitrectomy

Extremely hidden multi-stability in a class of two-dimensional maps with a cosine memristor

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Chinese Physics B 2022年第10期31卷 331-340页

作者： Li-Ping Zhang Yang Liu Zhou-Chao Wei hai-bo jiang Wei-Peng Lyu Qin-Sheng Bi Faculty of Civil Engineering and Mechanics Jiangsu UniversityZhenjiang 212013China School of Mathematics and Statistics Yancheng Teachers UniversityYancheng 224002China Engineering Department Mathematics and Physical SciencesUniversity of ExeterExeter EX44QFUK School of Mathematics and Physics China University of GeosciencesWuhan 430074China

We present a class of two-dimensional memristive maps with a cosine memristor. The memristive maps do not have any fixed points, so they belong to the category of nonlinear maps with hidden attractors. The rich dynamical behaviors of these maps are studied and investigated using different numerical tools, including phase portrait, basins of attraction,bifurcation diagram, and Lyapunov exponents. The two-parameter bifurcation analysis of the memristive map is carried out to reveal the bifurcation mechanism of its dynamical behaviors. Based on our extensive simulation studies, the proposed memristive maps can produce hidden periodic, chaotic, and hyper-chaotic attractors, exhibiting extremely hidden multistability, namely the coexistence of infinite hidden attractors, which was rarely observed in memristive maps. Potentially,this work can be used for some real applications in secure communication, such as data and image encryptions.

关键词： two-dimensional maps memristive maps hidden attractors bifurcation analysis extremely hidden multi-stability