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At the same time, to write a series of experiments with instructions and teaching materials, has obtained the good teaching effect.
Higher Education of Sciences. 2008（2）: PP70-73
Higher Education of Sciences. 2008（5）: PP126-129
Higher Education of Sciences. 2007（6）: PP97-100
Higher Education of Sciences. 2005（6）: PP45-48.

Use it to synthetic products have been applied in the field of ink, paint, hot melt additives, functional coatings and engineering materials.
Feng Guangzhu ' 23 has two poly acid and polyethylene glycol 400 as raw materials to prepare a new amphoteric polymer surfactant polyester sulfate salt.
Taking the two poly acid as the main raw material for the synthesis of reactive anionic surface active agent, to study the emulsifying properties and copolymerization characteristics.
The part of experiment The principal raw material Methyl methacrylate, analysis of pure, Shanghai Ling Feng Chemical Reagent Company With limited liability; butyl acrylate, analysis of pure, Tianjin Municipality kemi'ou Chemical Reagent Co.
[5] DENG Jian—ru, SHEN Hong—guang.YU Hong-gang, et a1.Study of the synthesis of reactive emulsifier dodecanolmaleic anhydride sodiumandits Propertiesi[J]．Journal of Hunan University: Natural Sciences, 2008, 35(10)：55—59．

Simulation of Temperature Field Material Properties.
Acknowledgements This work is supported by National Natural Science Fund (50375072), Graduate Innovation Foundation of Jiangsu Province and Jiangsu Key Laboratory of Precision and Micro-manufacturing Technology.
Yang, et al: Chinese Journal of Mechanical Engineering Vol. 41(1) (2005), p. 124-128 [5] H.J.
Zhang: Aerospace Materials & Technology Vol.5 (2007), p.30-33 [6] Z.T.
TusÏek: Materials Processing Technology Vol. 100 (2000), p. 250-256 [8] Institute of Welding of Chinese Mechanical Engineering Society: Welding Manual (2) (3rd edition) (Mechanical Industry Press, China 2008)

Progress in Materials Science 49 (2004) 389-410
Materials Science Forum 690 (2011) 53-56
International Journal of Materials Research 103 (2012) 948-954
Materials Science and Engineering A 316 (2001) 11-17
Materials Science Forum 765 (2013) 23-27.

For the sake of being in contrast with the reference [2], this paper also takes the achievements of students who are in the first semester of the freshman year and studying in mathematics major of Beijing University of Science and Technology (USTB) as an example to simulate (the data of four-time students with same types and amount of courses, Table 1 presents the corresponding relationship of course and credit).
Acknowledgements This article is funded by the Beijing University of Science and Technology Education Research Project (JG2011ZB02).
References [1] Ping Liu, Journal of Yangtze University (Social Sciences), 2008, 31(3):291-292
[2] Jiuru Dai, Mengyi Li, Wuwei Li, Tian Xia and Zhigang Zhang, Application of Monte Carlo Simulation in College and University Academic Warning: submitted to Advanced Materials Research, 2014
[3] Ping Li, Journal of Shanxi Institute of Education, 2013, 29(1): 96-98

Materials and methods Strains and media.
Acknowledgements This work was financially supported by the National Natural Science Foundation (20976155 and 20776130).
Biochemical Engineering Journal, Vol. 44, pp. 2-12. (2009) [4] S.A Bucarey, J.
Journal of Agricultural Biotechnology, 14 (1), pp. 147-148.
Cellular and Molecular Life Science, Vol. 67 (3), pp. 369-385. (2010) [19]S.

Materials and methods Scale plant description Base on special loop channel and scattered point aeration of oxidation ditch, Alternate mixing/aeration sequencing batch reactor simulation point aeration and operation characteristic of oxidation ditch.
Journal of Harbin University of Commerce (Sciences Edition) (in Chinese).
Journal of Harbin university of civil engineering and architecture (in Chinese).
Beijing: China environmental science press. 2002 [11] LEE Hae Goon.
Water science and technology.

The steel material is Q345c.
Study on mechanism and reinforcement processing of “single slab bearing”disease of hollow core slab beam bridge.Journal of Huazhong University of Science and Technology(Nature Science Edition)2008,36(2):118-121
China Safety Science Journal.2004,11(14):25~29
Analysis of the horizontal connection and reinforcement measures on hollow slab.Journal of Guangzhou University(Natural Science Edition) ,2011,(06):68-72
Journal of Southeast University(Natural Science Edition), 2012,42(4):734-738 [16] Standards Council of Canada.CAN/CSA-S6-00 Canadian highway bridge design code.Ontario:CSA International,2000 [17] Nam JW,etal.

With the continuous development of ceramic technology, various mould materials used for ceramic forming emerged in endlessly, from the early gypsum mould to the latest rubber mould, steel mould and resin mould etc.
Consequently, gypsum mould was one of indispensable auxiliary materials in ceramic industry.
Experimental α and β type hemihydrate gypsum powders taken from Hubei province of China, were used as the experimental materials.
[5] Chu Fang-fang, Ji Ping, Experimental study of the influence of methylcellulose on the mechanical performance on dental stones, Chinese Journal of Prosthodontics 2011, 12(2), pp. 115-118
[8] Chen Guohua, Application of mechanochemistry in the research of ceramic materials, Foshan Ceramics, 2003, 13(6), pp. 6-9.

Abrasion-resistant Performance of Impeller Through research, the main reason of the abrasion of mixer impeller is the material of the impeller.
At first, we select the duplex stainless steel CD4M cu as the impeller material, and precipitation hardening by the surface.
While increasing quality, metal materials can not be achieved, and only abrasion-resistant non-metallic materials with other research identified by the use of a abrasion-resistant polyurethane material as the impeller.
Through the manufacture of precision molds, selection of the abrasion-resistant materials, manufacturing improvements, we got a new impeller for the field test.
China, 212013 Tel: 0086-511-88780598(H); Cell phone: 0086-13775376699 Email: xu_wx@ujs.edu.cn , 13775376699@163.com References [1] J.P.Yuan, S.Q.Yuan and H.Li: China Rural Water and Hydropower, Vol.5 (2005), p. 95-97 [2] P.D.Liu, S.H.Yu and J.H.Ye: Machine Building & Automat ion, Vol.34 (2005), p.72-74 [3] Q.B.Meng: Mechanical Engineer, Vol5 (2007), p.52-53 [4] C.H.Qiu and S.Y.Cheng: Machinery Design & Manufacture, Vol.9 (2009), p.35-36 [5] A.J.Liu, D.S.Liu and Z.J.Zhou: China Safety Science Journal, Vol.11 (2008), p.169-176 [6] X.F.Wang and D.G.Chang: China Mechanical Engineering, Vol.5 (2009), p.538-541