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aShandong Vocational College of science & Technology,Weifang,Shandong 261053,China bShandong Vocational College of science & Technology,Weifang,Shandong 261053,China a,bShandong Vocational College of science & Technology,Weifang,Shandong 261053,China sdzywjp@163.com.
flexibility —theoretical value * arithmetic solution Picture 4—1 Anti-elastic contact force elasto plasticity —theoretical value arithmetic solution ,, Picture 4—2 Elasto-plastic contact force express the most pointreaction force; express bandwidth;E express elasticity modulus of materials.
References [1] ZHANG-zheng , ZHAO-meiying, and WAN-xiaopeng, “An Adaptive Element-free Galerkin Model for Contact Problems”, Decemberl, Journal of Northwestern Polytechnical University, XiAn, 2007, pp. 3-9
[3] JIA-liang, HUANG-qiqing, and YIN-zhiping, “Meshless - the Finite Element of a Direct Coupling Method”, June, Journal of Northwestern Polytechnical University, XiAn, 2003, pp. 337-340
[6] LI-yazhi, ZHAO-meiying, and WAN-xiaopeng, Finite Element and Program Design, Science Press,BeJing, 2007.

Therefore, new absorbent materials for heavy metal ions in waste water are turning of increasing importance[1-3].
Experimental Materials.
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Introduction Fiber reinforced materials are basically composed of matrix and fiber as reinforcement.
[13] Thorsten Mahrholz, Jurgen Mosch, Dirk Rostermundt, Ulrich Riedel and Lars Herbeck, “New high – performance fiber reinforced materials with nanocomposites”, Materials for Aerospace Applications, 24-26, 2003
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With regard to metal materials, the technologies of surfacing of powder materials [7-9] or wires [10-13] are distinguished.
Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science, 2020, vol. 22, no. 3, pp. 18–32.
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Influence of Strontium Ferrite on Properties of 0-3 Cement-Based Piezoelectric Composites Shifeng Huang 1, a, Xue Li 2,b, Futian Liu 3,c, Yamei Liu 4,d, Xin Cheng 5,e and Zongjin Li 6,f 1Department of Material Science and Engineering, University of Jinan, Jinan 250022, China 2Department of Material Science and Engineering, University of Jinan, Jinan 250022, China 3Department of Material Science and Engineering, University of Jinan, Jinan 250022, China 4Department of Material Science and Engineering, University of Jinan, Jinan 250022, China 5Department of Material Science and Engineering, University of Jinan, Jinan 250022, China 6Department of Civil Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China a mse_huangsf@ujn.edu.cn, b snow_li365@163.com, cmse_liuft@ujn.edu.cn, e chengxin@ujn.edu.cn, f zongjin@ust.hk Keywords: cement based piezoelectric composite; dielectric constant; piezoelectric constant
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Electrically conductive PEDOT-PSS/PAN composite fibers prepared by wet spinning Liu Yin, Li Xin*, Lü JingChun Beijing Key Laboratory of Clothing Materials R&D and Assessment, School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China Keywords: PEDOT-PSS, PAN, wet spinning, composite conductive fibers Abstract.
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Introduction Electronic devices based on organic semiconducting materials have attracted researchers from the last decades due to low cost and large area electronic applications [1-2].
Organic semiconducting materials have been employed as an active material in different electronic devices such as organic light emitting diodes (OLED), organic thin film transistors (OTFT), strain sensors, pressure sensors, humidity sensors and organic solar cells [3-5].
For sensing applications new organic materials and their composites have been studied [1-5].
Advanced Materials, 14(2), 99-117. (2002)
[20] N.F.Mott, E.A.Davis, Electronic Processes in Non-crystalline Materials, Oxford: Clarendon Press, 1971 ,pp.96-123

In recent years, researchers have conducted extensive and detailed studies using various adsorption materials, such as raw shell materials, coconut shell fiber, almond hulls, modified banana stem fiber, and wood fiber, to handle cobalt-containing wastewater [9,10,11,12].
Materials and methods Experimental materials The reagents used in the experiments, CoCl2·6H2O, NaOH, and HCl, were of analytical grade and were obtained from the Shanghai Chemical Reagent Company.
Acknowledgements This work was financially supported by National National Natural Science Foundation of China (51208200) and Shanghai Postdoctoral Science Foundation (12R21412200).
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