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Aligned Fibrous Scaffold Induced Aligned Growth of Corneal Stroma Cells in vitro Culture

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Chemical Research in Chinese Universities 2012年第6期28卷 1022-1025页

作者： GAO yan yan Jing CUI Xue-jun wang hong-yan wang Qing College of Chemistry Jilin University Changchun 130012 P. R. China China-Japan Union Hospital Jilin University Changchun 130033 P. R. China

To investigate the contribution of fibre arrangement to guiding the aligned growth of corneal stroma cells,aligned and randomly oriented fibrous scaffolds of gelatin and poly-L-lactic acid（PLLA） were fabricated by electrospinning.A comparative study of two different systems with corneal stroma cells on randomly organized and aligned fibres were *** efficiency of the scaffolds for inducing the aligned growth of cells was assessed by morphological observation and 3-（4,5-dimethylthiazol-2-yl）-2,5-diphenyl-tetrazolium bromide（MTT） *** show that the cells cultured on both randomly oriented and aligned scaffolds maintained normal morphology and well spreading as well as long term ***,corneal stroma cells grew high orderly on the aligned scaffold,while the cells grew disordered on the randomly oriented ***,the cells exhibited higher viability in aligned scaffold than that in randomly oriented *** results indcate that electrospinng to prepare aligned fibrous scaffolds has provided an effective approach to the aligned growth of corneal stroma cells in *** findings that fiber arrangement plays a crucial role in guiding the aligned growth of cells may be helpful to the development of better biomaterials for tissue engineered cornea.

关键词： Electrospnning Fiber alignment Stroma cells proliferation Tissue engineering scaffold

非层状二维γ-In_(2)Se_(3)的各向异性生长及其光学特性

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原子与分子物理学报 2025年第6期42卷 58-65页

作者：雷子煊张文婷夏晓凤王红艳西南交通大学物理科学与技术学院材料先进技术重点实验室成都610031

非层状二维(2D)γ-In_(2)Se_(3)具有优异的光学和电学性能,在超薄柔性器件和光电探测领域具有广泛的应用前景.然而,相较于层状的类石墨烯材料,非层状材料固有的各向同性化学键,使得其二维各向异性生长面临较大的挑战.本研究构建了一种... 详细信息

非层状二维(2D)γ-In_(2)Se_(3)具有优异的光学和电学性能,在超薄柔性器件和光电探测领域具有广泛的应用前景.然而,相较于层状的类石墨烯材料,非层状材料固有的各向同性化学键,使得其二维各向异性生长面临较大的挑战.本研究构建了一种新的化学气相沉积(CVD)生长策略,成功制备了高质量的2Dγ-In_(2)Se_(3).首次选用低熔点的铟粉为前驱体,有效降低了生长温度.此外,生长过程去除了CVD法合成二维硒化物时不可避免的危险气体H_(2),这不仅能有效抑制InSe副产物的形成,还降低了实验危险性.通过探究原料用量、生长温度及时间等参数对样品形貌和厚度的影响,获得了最佳生长窗口.详细表征了2Dγ-In_(2)Se_(3)的微观形貌、化学组分、晶体结构和光学特性等.结果表明,样品具有强烈的光致发光(PL)效应,与γ-In_(2)Se_(3)的直接带隙属性相吻合.随着厚度的减小,PL峰会发生蓝移,说明光学带隙随之增大.Raman光谱显示,不同厚度的样品其特征峰也会发生移动,说明厚度会影响2Dγ-In_(2)Se_(3)的分子振动行为.由此可见,通过生长参数调控2Dγ-In_(2)Se_(3)的厚度,可实现对其光学带隙和分子振动行为的调控,这将为相关的理论研究和光电器件应用提供基本的材料平台.

关键词：非层状材料二维γ-In_(2)Se_(3) 化学气相沉积各向异性生长带隙

Two Schemes for Probabilistic Remote Preparation of a Four-Particle Entangled Cluster-Type State

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Communications in Theoretical Physics 2014年第3期61卷 305-314页

作者： HOU Kui wang hong-yan LI Yi-Bao Department of Mathematics and Physics Anhui Jianzhu University Hefei 230601 China

Using partial entangled states as the quantum channel, two schemes for probabilistic remote preparation of the four-particle cluster-type state with real and complex coefficients are presented. In the first scheme, the sender and the receiver share two partial Bell states and one partial three-qubit GHZ stats as the quantum channel, and the sender can help a remote receiver to prepare a four-particle entangled cluster-type state by using three-qubit projective measurements with certain probability. In the second scheme, the quantum channel is composed of two partial three-qubit GHZ states, the remote state preparation(RSP) can be successfully realized via the positive operator valued measure(POVM), and the two-particle projective measurements are also needed in this process. The total success probability and classical communication cost are calculated.

关键词： remote state preparation GHZ state Positive operator-valued measure classical information

Simultaneous Forecast for Three Speciations of Heavy Metal Elements Using Fuzzy Cluster-Artificial Neural Network

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Chemical Research in Chinese Universities 2012年第5期28卷 802-806页

作者： ZHAO Tian-qi MENG Fan-yu wang hong-yan GAO yan College of Chemistry Jilin UniversityChangchun 130012P.R.China

The three speciations（water extract, adsorption and organic speciations） of Cu, Zn, Fe and Mn in geo-chemical samples were determined by fuzzy cluster-artificial neural network（FC-ANN） method coupled with atomic absorption spectrometry. A back-propagation artificial neural network with one input node and three export nodes was constructed, which could forecaste three speciations of heavy metals simultaneously. In the learning sample set, the three speciations of each element were allowed to change in a wide concentration range and the accuracy of the analysis was apparently increased via the learning sample set optimized with the help of the fuzzy cluster analysis. The average relative errors of the three speciations of Cu, Zn, Fe or Mn from 100 geo-chemical samples were less than 5%. The relative standard deviations of the three speciations of each of four heavy metals were 0.008%―4.43%.

关键词： Fuzzy cluster Artificial neural network Speciation

Compressive and Rarefactive Waves in Dust Plasma with Non-thermal Ions

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Communications in Theoretical Physics 2006年第6期45卷 1112-1116页

作者： DUAN Wen-Shan wang hong-yan John Parkes Department of Physics Northwest Normal University Lanzhou 730070 China Department of Mathematics University of Strathclyde Glasgow G1 1XHUK

The governing equation of the dust fluid with non-thermal ions and variable dust charge on dust particles in hot dust plasmas is obtained. Both the compressive and rarefactive waves in this system are investigated. They can be determined by plasma parameters including the temperatures of （lust fluid, ions and electrons, as well as the non-thermal parameter of ions, and the number densities of the dust particles, the ions and the electrons, etc.

关键词： compressive wave rarefactive wave soliton

Analysis of Phospholipids in Crucian Carp(Carassius auratus) Muscle by Offline HPLC-MALDI-TOF MS

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Chemical Research in Chinese Universities 2011年第3期27卷 371-374页

作者： LI Guo-chen wang yan-hong WU Ren-an wang Shi-cheng Inspection and Testing Center of Agro-product Safety and Environment Quality Institute of Applied EcologyChinese Academy of SciencesShenyang 110016P.R.China National Chromatographic Research&Analysis Center Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023P.R.China

The interest in the analysis of phospholipids(PLs), especially phosphatidylcholine(PC), has been increasing due to the importance of them in biochemistry as well as in industry. A method was reported based on the offline combination of MALDI-TOF MS and normal-phase HPLC for analyzing PLs extracted from crucian carp. Total PLs of crucian carp were extracted and then separated by HPLC before the collected subfractions were analyzed by MALDI-TOF MS. The mass spectra obtained show peaks of H+, Na+ and K+ adducts of PC molecules. It is shown that the prior separation of PLs by HPLC is highly necessary to remove the signal suppressing and to avoid the possible overlapping. With this method, 9 possible PC molecules in crucian carp and the corresponding fatty acid compositions were given from the well-resolved mass spectra.

关键词： Phospholipid Phosphatidylcholine Phosphatidylethanolamine Sphingomyelin HPLC MALDI Crucian Carp

Application of Back-propagation Artificial Neural Network in Speciation of Cadmium

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Chemical Research in Chinese Universities 2010年第6期26卷 899-904页

作者： wang Lin-lin ZHANG Jie LIU Hai-yan ZHANG Hai-tao wang hong-yan yanG Xiu-rong wang Ying-hua College of Chemistry Jilin University Changchun 130012 P. R. China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China

A method for predicting the five species contents of cadmium was developed by combining the back-propagation artificial neural network with graphite furnace atomic absorption spectrometry（BP-ANN-GF-AAS）.Based on the strong learning function and the features of the information distributed storage of artificial neural network（ANN）,a single ANN was constituted in which only one determination point of every sample was *** exchangeable,carbonated,Fe-Mn oxidable,organic and residual species of cadmium for 20 kinds of soil samples from the two sections of Changchun（China） were determined by *** detection limit of the method is 0.024 μg/L and the limit of quantification is 0.080 μg/L.t-Test indicates that there is not any systemic error of the results obtained by the Tessier sequential extraction graphite furnace atomic absorption spectrometry method（Tessier-GF-AAS） and *** with those of the Tessier-GF-AAS,the prediction errors of BP-ANN-GF-AAS are less than 10%.The proposed method is fast,convenient,sensitive,and can eliminate the interference among various species.

关键词： Artificial neural network(ANN) Speciation Graphite furnace atomic absorption spectrometry(GF-AAS) Cadmium

Interspecific interference competition between Encarsia formosa and Encarsia sophia （Hymenoptera： Aphelinidae） in parasitizing Bemisia tabaci （Hemiptera： Aleyrodidae） on five tomato varieties

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Insect Science 2011年第1期18卷 92-100页

作者： Shu-Ting Pang Liang wang yan-hong Hou Zu-Hua Shi Key Laboratory of Molecular Biology of Crop Pathogens and Insects Ministry of Agriculture Institute of Insect Sciences Zhejiang UniversityHangzhou China

Interspecific competition between Encarsiaformosa and Encarsia sophia, two major parasitoids of Bemisia tabaci, and the influence of five tomato varieties on competition outcome were investigated under laboratory conditions. E. formosa parasitized more B. tabaci than E. sophia when in single wasp assays on any of the tomato varieties investigated. When B. tabaei nymphs were exposed to both wasp species （either simultaneously or sequentially）, the number of B. tabaci nymphs parasitized by either wasp species was significantly decreased compared to the sole access condition. Total mortality of B. tabaci was increased when B. tabaci nymphs were exposed to both wasp species compared to only one wasp species. Thus competition between *** and E. sophia apparently reduced parasitoid offspring numbers, but not the efficiency of biological con- trol. In fact, control efficiency was enhanced in some cases, particularly on tomato variety Huangtuoyuan （HTY）. When wasps were allowed sequential access to hosts, interference occurred through host feeding by the second wasp, especially if it was E. sophia. The effect of different tomato varieties was not significant.

关键词： Bemisia tabaci Encarsia formosa Encarsia sophia Lycopersicon esculenrum interspecific competition

Open-closed Loop ILC Corrected with Angle Relationship of Output Vectors for Tracking Control of Manipulator

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自动化学报 2010年第12期36卷 1758-1765页

作者： wang hong-Bin wang yan Key Laboratory of Industrial Computer Control Engineering of Hebei Province Yanshan UniversityQinhuangdao 066004P.R.China

In the research of iterative learning control (ILC), it is usually assumed that the initial states are consistent with the desired states or the initial states are fixed per iteration. By considering the problem that ILC law is difficult to apply to the tracking control for the manipulator under the restriction of initial states, we change the dynamic model of the manipulator system into a lower-order system by reduced-order transformations. For the transformed manipulator system, an open-closed loop ILC algorithm with angle correction term is proposed, which uses the error signal and the deviation of two adjacent error signals to adjust itself. Compared with traditional P-type algorithm, this algorithm makes better use of the saved and current information; while compared with PD-type algorithm, it overcomes the instability caused by the derivative action. Meanwhile, the angle relationship of output vectors is used as a standard to estimate the quality of the control inputs, “awarding or punishing” the changing trend of the algorithm. So, a fast convergence speed and excellent tracking effect are both realized. Improved strategies are proposed for the above algorithm when the limitation of each joint rotating angle is considered. Finally, the simulation results verify the effectiveness of the control scheme.

关键词： ILC 自动化跟踪控制仿真