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Bio-Inspired Electromagnetic Protection Based on Neural Information Processing

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Journal of Bionic Engineering 2014年第1期11卷 151-157页

作者： Xiaolong Chang Shanghe Liu Menghua man Weihua Han Jie Chu liang Yuan Institute of Electrostatic and Electromagnetic Protection Mechanical Engineering College Shijiazhuang 050003 P R. China Institute of Semiconductors Chinese Academy of Science Beijing 100083 P. R. China Department of Information Engineering Mechanical Engineering College Shijiazhuang 050003 P. R. China

Electronic systems are vulnerable in electromagnetic interference environment. Although many solutions are adopted to solve this problem, for example shielding, filtering and grounding, noise is still introduced into the circuit inevitably. What impresses us is the biological nervous system with a vital property of robustness in noisy environment. Some mechanisms, such as neuron population coding, degeneracy and parallel distributed processing, are believed to partly explain how the nervous system counters the noise and component failure. This paper proposes a novel concept of bio-inspired electromagnetic protec- tion making reference to the characteristic of neural information processing. A bionic model is presented here to mimic neuron populations to transform the input signal into neural pulse signal. In the proposed model, neuron provides a dynamic feedback to the adjacent one according to the concept of synaptic plasticity. A simple neural circuitry is designed to verify the rationality of the bio-inspired model for electromagnetic protection. The experiment results display that bio-inspired electromagnetic pro- tection model has more power to counter the interference and component failure.

关键词： biological nervous system robustness population coding bio-inspired electromagnetic protection model neuralcircuitry

Polymorphism of CYPIAl and GSTMl genes associated with susceptibility of gastric cancer in Shandong Province of China

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World Journal of Gastroenterology 2005年第37期11卷 5757-5762页

作者： Hao Li Xue-liang Chen Hui-qing Li the Center of Tumour Treatment Qilu Hospital of Shandong University Jinan 250012 Shandong Province China the Institute of Basic Medicine Shandong Academy of Medical Sciences Jinan 250062 Shandong Province China

AIM： To explore whether polymorphisms of the CYPIA1 and GSTM1 genes are associated with susceptibility of stomach cancer. METHODS： A total of 102 stomach cancer cases and 62 healthy persons were diagnosed by pathology in 1998- 2000 in the Qilu Hospital of Shandong University. Gene polymorphisms were detected by the PCR using sequencespecific primers. Data analysis of the case-control study was carried out using the unconditional logistic method. RESULTS： After adjustment for age, sex, educational levels, and occupation, the risk factors for stomach cancer were shown to be smoking, Helicobacter pylori （H pylon）, and presence of the CYPIM G/G and GSTM1O/O genotypes. Interaction was observed between the combined genotypes of either CYPIA1 G/G and GSTM1O/O or Hpyloriinfection, or GSTM1O/O and Hpyloriinfection or smoking. CONCLUSION： Polymorphisms of the CYPIA1 and GSTM1 genes, Hpyloriinfection and smoking are related to susceptibility to stomach cancer.

关键词： Stomach cancer CYPIA1 GSTM1 Polymorphism

Recognition algorithm for plant leaves based on adaptive supervised locally linear embedding

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International Journal of Agricultural and Biological Engineering 2013年第3期6卷 52-57页

作者： Yan qing liang Dong Zhang Dongyan Wang Xiu Key Laboratory of Intelligent Computing&Signal Processing Ministry of EducationAnhui UniversityHefei 230039China Beijing Research Center for Information Technology in Agriculture Beijing 100097China

Locally linear embedding(LLE)algorithm has a distinct deficiency in practical *** requires users to select the neighborhood parameter,k,which denotes the number of nearest neighbors.A new adaptive method is presented based on supervised LLE in this article.A similarity measure is formed by utilizing the Fisher projection distance,and then it is used as a threshold to select *** samples will produce different k adaptively according to the density of the data *** method is applied to classify plant *** experimental results show that the average classification rate of this new method is up to 92.4%,which is much better than the results from the traditional LLE and supervised LLE.

关键词： supervised locally linear embedding manifold learning Fisher projection adaptive neighbors leaf recognition Precision Agriculture

Synthesis and Crystal Structure of a Dinuclear Cu(Ⅱ) Complex [Cu(C_(13)H_9N_2O)Cl]_2·(CH_3CN)_2 with Ligand 2-Benzimidazol

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Chinese Journal of Structural Chemistry 2007年第2期26卷 149-152页

作者： LI qing-Xiang YANG Xiang-liang XU Hui-Bi Hubei Key Laboratory of Novel Chemical Reactor andGreen Chemical Technology Wuhan Institute of Technology Wuhan 430073 China College of Life Science Huazhong University of Science and Technology Wuhan 430074 China

A new dinuclear copper complex, [Cu（C13HgN2O）Cl]2.（CH3CN）2 （C30H24C12Cu2N6O2）, has been synthesized and characterized by X-ray structure determination. It crystallizes in the triclirile system, space group P1, with a = 7.6677（14）, b = 9.2375（17）, c = 11.227（2） ]A, α = 81.338（3）,β = 88.173（4）, γ = 66.199（3）°, V = 718.9（2） ]A^3, Z = 1, Mr = 698.53, F（000） = 354, Dc = 1.613 g/cm^3, μ（MoKa） = 1.705 mm^-1, the final R = 0.0645 and wR = 0.1364 for 2474 unique reflections with 1809 observed ones （I 〉 20（I））. In the title complex, each copper（H） atom is located at the center of a distorted tetrahedron consisting of four coordinate atoms （one nitrogen atom, two oxygen anions, and one chlorine atom）. Two copper（Ⅱ） atoms are bridged by two oxygen anions （O（1） and O（la）） of two phenolates to form a Cu（Ⅱ）-Cu（Ⅱ） binuclear entity, and the distance between two copper（Ⅱ） atoms is 3.0144（15） A.

关键词： 2-benzimidazol phenolate Cu(Ⅱ) complex crystal structure

MODELING ON DYNAMIC PROCESS OF MEMBRANE FOULING DURING FINITE CROSSFLOW ULTRAFILTRATION IN CHARGED SYSTEM

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Journal of Hydrodynamics 2006年第2期18卷 206-210页

作者： LUO Ming-liang PU Chun-sheng ZHAO Jian-qing College of Petroleum Engineering China University of Petroleum （East China） Dongying 257061 China College of Materials Science and Engineering South China University of Technology Guangzhou 510640 China

Flux decline during finite crossflow Ultrafiltration（UF） in charged system was investigated by perceiving membrane fouling as a dynamic process from non-equilibrium to equilibrium. Under the influence of the boundary condition at the initial section and cross flow, the equilibrium is first reached at the initial section of the crossflow filter and the front of the equilibrium region progresses with time toward the end of the filter. A mathematic model was developed to describe this dynamic process of membrane fouling in a charged system. With the model, the time-dependent flux and the time required to reach the steady state in a crossflow filtration can be easily determined. The fouling process under different conditions is simulated as illustrated with a demonstration of the newly developed model. The resulls of simulation show that there are jumps in the local flux at the front of the equilibrium region and the electrokinetic properties of charged UF system have a very substantial influence on the separation performance of membrane.

关键词： fouling dynamics flux decline,Ultrafiltration(UF) charged system modeling

Synthesis and Crystal Structure of 1-(4-Chlorophenyl)-2-cyano-3-amino-3a-hydroxy- 3a,3b,6,7-tetrahydrobenzo[4,5]indene

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Chinese Journal of Structural Chemistry 2005年第12期24卷 1393-1396页

作者： SHI Da-qing SHI Chun-Ling RONG liang-Ce Department of Chemistr） Xuzhou Normal University Xuzhou 221116 China The Key Laboratory of Biotechnology on Medical Plants of Jiangsu Province Xuzhou 221116 China

The title compound 1-（4-chlorophenyl）-2-cyano-3-amino-3a-hydroxy-3a,3b,6,7- tetrahydro-benzo[4,5]indene 2, has been synthesized by the reductive cyclization of 2-cyano-3- （4-chlorophenyl）-3-（1-tetralon-2-yl） propionitrile 1 induced by low-valent titanium reagent and its structure was determined by single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group C2/c with a = 28.244（7）, b = 14.401（3）, c = 21.245（3）A,β= 115.71（2）°, V = 7786（3）A^3, Mr= 696.13, Dc = 1.188 g/cm^3, Z = 8,μ（MoKα） = 0.208 mm^-1, F（000） = 2916, R = 0.0783 and wR = 0.2350. X-ray analysis reveals that the five-membered ring （C（7）～C（l l）） adopts an envelop conformation, while the six-membered ring （C（10）～C（14）, C（19）） has a half-chair conformation. Meanwhile, intermolecular H-bond interactions result in the formation of polymer.

关键词： tetrahydrobenzoindene synthesis crystal structure low-valent titanium

Least Squares Evaluations for Form and Profile Errors of Ellipse Using Coordinate Data

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Chinese Journal of Mechanical Engineering 2016年第5期29卷 1020-1028页

作者： LIU Fei XU Guanghua liang Lin ZHANG qing LIU Dan School of Mechanical Engineering Xi'an Jiaotong University State Key Laboratory for manufacturing Systems Engineering Xi'an Jiaotong University Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System Xi'an Jiaotong University

To improve the measurement and evaluation of form error of an elliptic section, an evaluation method based on least squares fitting is investigated to analyze the form and profile errors of an ellipse using coordinate data. Two error indicators for defining ellipticity are discussed, namely the form error and the profile error, and the difference between both is considered as the main parameter for evaluating machining quality of surface and profile. Because the form error and the profile error rely on different evaluation benchmarks, the major axis and the foci rather than the centre of an ellipse are used as the evaluation benchmarks and can accurately evaluate a tolerance range with the separated form error and profile error of workpiece. Additionally, an evaluation program based on the LS model is developed to extract the form error and the profile error of the elliptic section, which is well suited for separating the two errors by a standard program. Finally, the evaluation method about the form and profile errors of the ellipse is applied to the measurement of skirt line of the piston, and results indicate the effectiveness of the evaluation. This approach provides the new evaluation indicators for the measurement of form and profile errors of ellipse, which is found to have better accuracy and can thus be used to solve the difficult of the measurement and evaluation of the piston in industrial production.

关键词： ellipse form Error profile error least squares method piston

Effective corrosion protection of magnetic microwave absorber with designed macromolecular network barrier

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Rare Metals 2023年第2期42卷 558-571页

作者： qing-qing Hu liang Chai Ke liang Yan-Xin Jiang Guang Yang Lin-Bo Zhang liang-Jun Yin Xin Wang Tao Liu Hai-Peng Lu Long-Jiang Deng School of Electronic Science and Engineering and National Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of ChinaChengdu611731China

Carbonyl iron(CI)particles as magnetic microwave absorption material often suffer from serious corrosion under corrosive environment which leads to performance *** this study,fluorin-containing acrylate type polymer network layers with thickness ranging from tens of nanometers to around one hundred nanometers were formed continuously around *** crosslinked coating layer(named FT)effectively increases CI’s thermal decomposition temperature by at least 34%.The FT-coated CI(named CI-FT)was able to resist both inorganic and organic corrosive media attacking efficiently compared with bare *** surface polymer network could also help CI withstand organic medium dissolution which proved the firmness of *** voltammetry(CV)test revealed that the coating layer could significantly reduce maximum oxidation current density of CI by more than 45 *** polarization study during CV tests also confirmed that thicker FT coating layer could help CI sample stabilize corrosion current ***,the surface coating also enhanced the impedance matching properties of CI as microwave absorber and the CI-FT samples demonstrated improved microwave absorption properties which degenerated little after corrosive medium soaking compared with that of CI.

关键词： Carbonyl iron(CI) Corrosion protection Microwave absorption Fluorin-containing acrylate Cyclic voltammetry Corrosion process

Research on seismic behavior and shear strength of SRHC frame columns

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Earthquake Engineering and Engineering Vibration 2017年第2期16卷 349-364页

作者： Zheng Shansuo Qin qing Zhang Yixin Zhang liang Yang Wei Department of Civil Engineering Xi’an University of Architecture and Technology Department of Civil and Architecture Engineering Xi'an University of Science and Technology

The seismic behavior of steel reinforced high strength and high performance concrete （SRHC） frame columns was investigated through pseudo-static experiments of 16 frame columns with various shear span ratios, axial compression ratios, concrete strengths, steel ratios and stirrup ratios. Three kinds of failure mechanisms are presented and the characteristics of experimental hysteretic curves and skeleton curves with different design parameters are discussed. The columns＇ ductility and energy dissipation were quantitatively evaluated based on seismic resistance. The research results indicate that SRHC frame columns can withstand extreme bearing capacity, but the abilities of ductility and energy dissipation are inferior because of SRHC＇s natural brittleness. As a result, the axial load ratio should be restricted and some construction measures adopted, such as increasing the stirrup ratio. This research established effect factors on the bearing capacity of SPHC columns. Finally, an algorithm for obtaining ultimate bearing capacity using the flexural failure mode is established based on a modified plane- section assumption. The authors also established equations to determine shearing baroclinic failure and shear bond failure based on the accumulation of the axial load force distribution ratio. The calculated results of shear bearing capacity for different failure modes were in good agreement with the experimental results.

关键词： SRHC flame columns seismic behavior ductility energy dissipation axial compression ratio shear bearingcapacity