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Results and Discussions (1) The calculation and analysis of smooth surface In this calculation, the dimensionless velocity, load and material parameter are as fellows: U=2.0e-11, W=2.0e-5, G=4500.
Acknowledgments The work described in this paper was fully supported by a grant from the Industrial Research Project of Science and Technology Department of Shaanxi Province (No.2011K09-29).
Journal of tribology, 2001,123: 254-262
ASME Journal of Tribology,2003,125: 76-90.

Cai Department of Instrument Science and Engineering Shanghai Jiaotong University, Shanghai, 200240 China Keywords: Vibration System, Flexure Hinges, Stiffness, Natural Frequency, Finite Element Analysis Abstract.
It can be seen from Fig. 3 that an infinitesimal du around flexure hinge center is gotten with width a, height du, and depth b, and the following equations are obtained Fig. 3 The dimension of single circular flexure hinge ( sin ) cos cos du d R R a t R Rθ θ θ = = = + − , (4) From theoretical mechanics theory, one is obtained [5]: ( / ) z z z d M I E du α = , (5) where Iz= (ba3/12) The inertia torque of the infinitesimal around axis Z E :The elastic modulus of the selected material Because the single circular flexible hinge (θ=90°) is adopted in this vibration system, the obtained expression on stiffness of flexure hinges is: x y z R b h t R θ a du x y M3 3 2 2 1 1 2 5/ 2 (3 4 2) 6 ( 1) [ tan ( 2 1)] 12 (2 1) ( 1) (2 1) zz EbR s s s s s k s M s s s θ − − + + + = = + + + + + ,
References [1] Li Dinggen, Cao Jiguang: Chinese Journal of Mechanical Engineering, Vol. 17 (2004), pp. 579-584
[4] Qin Peng, Cai Ping: Chinese Journal of Mechanical Engineering, Vol. 42 (2006), pp. 208- 214

Synthesis of Al1.75Fe1.25(PO4)3 and Its Selectivity to Li+ Exchange Jinhe Jiang MicroScale Science Institute , Department of Chemistry and Chemical Engineering ,Weifang University, Weifang, 261061,China Corresponding author.
Introduction Lithium and its compounds are widely used in ceramics, medicine, air conditioning, catalysts, high-energy lithium battery and light aluminum alloy, etc., especially for the thermonuclear reaction ,they are the essential raw material[1-2].
Rare Metal, 2007,26(6),121 [2] Y.F.Liu, Kenta Ooi: Inoranic ion exchanger with ion-memery ability, J.Ion Exchange and Adsorption. 1994,10(3),246 [3] D.Q.Dong, J.Zhong, D.L.Liu, Y.F.Liu: LiCu0.5Mn1.5O4 synthesis and Li+ extraction/reaction with it in the aqueous phase, J.China Journal of Applied Chemistry . 1998,15(3),11 [4] Zhong h..
Prpperty of H2TiO3 type ion-exchangers and extraction of lithium from brine of natural gas wells J.Chinese Journal of Applied Chemistry.2000,17(3),307

The accurate modal analysis of complex structure using the finite element analysis software provides a science theory basis for the optimization design and prediction of dynamic property of new product and the existing structure.
Conclusions The comparison shows that the optimized structure of the bed structure saves more the original material and lightens more weight than the original structure, and reduces the cost.
JOURNAL OF MECHANICAL ENGINEERING, 2011,47(3):135-140 [2] LU Jun, WEN Huaixing, ZHANG Gongxue, etc..
Journal of Mechanical Transmission, 2010,34(12):48-51 [6] SONG Zhian.

By the introduction of localization-mode method, the structure’s local mode and maximum strain energy zone are regulated, which realized the optimization of damping material placement.
Acknowledgment The writers gratefully acknowledge the financial support provided by the National Natural Science Foundation of China (Grant no. 50878010).
He: Journal of Beijing University of Technology, Vol. 35 (2009), p. 1624 (In Chinese) [2] Z.C.
Yang: Chinese Journal of Theoretical and Applied Mechanics, Vol. 42(2010): p.290 (In Chinese) [4] J.H.

Characteristics of New Absorbent System of Heteropoly Compound Solution for H2S Removal Jing Wang 1, Rui Wang 2, a 1 State Intellectual Property Office of China, No.6, Xitucheng Road, Haidian District, Beijing, China 2 School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China aree_wong@hotmail.com Keywords: Hydrogen Sulfide; Desulfurization; Liquid Redox; Absorption; H4PVMo11O40 Abstract.
Introduction Hydrogen sulfide, as a highly undesirable contaminant existing in industrial gases, such as natural gas and coke oven gas, has long been confirmed to be hazardous material which should be removed to the possible lowest limit for reasons from both environmental restrictions and process requirements.
Journal of Chemical Engineering of Japan., Vol. 35(2002), p.15 [6] R.
Chemical Journal of China Universities., Vol. 23(2002), p.303 [7] R.

Daqing Oilfield was the most important oil and gas production base since the founding of China; it offered enormous material support to China's economic development.
Conference [1]Z.S.Shi, T.Q.Wang and J.G.Wang: Design, Journal of Southwest Petroleum University (Science & Technology Edition), Vol.33 (2011) No.5 p.21.
[5] Z.N.Cheng and B.K.Cheng: Journal of Chengdu Institute of Technology, Vol.23 (1996) No.4 p.50.

Based on the mechanism of adhesion wear proposed by Archard and the approximate formula, the wear of ball screw can be obtained as follows: (1) Where, is increment of the wear volume; means increment of sliding distance; represents pressure in soft material yield limit between Ball and ball. is a dimensionless wear constant, which can be setted for 10-9 made of bearing steel in good lubrication condition [5].
Journal of Southeast University(Natural science edition), 2011, 41（5）：982-986
Wear-life models for self-lubricating spherical plain bearing[J].Journal of National University of Defense Technology, 2013,35（6）：53-59

Dynamic Estimation of Water Hyacinth Area by Fusing Data from Satellite and GPS Sensors Ling Sun1, a, Zesheng Zhu2, b 1JiangSu Academy of Agricultural Sciences, Nanjing, 210014, China 2Naval Command College, Nanjing, 210016, China alingsun60@gmail.com, bzesheng.zhu@gmail.com Keywords: Water hyacinth; Satellite and GPS sensors; Multi-sensor fusion; Area growth model Abstract.
Material and Methods The water pollution of Taihu Lake is characterized by the severity of eutrophication and high frequency of algae bloom.
Journal of environmental management, 2010, 91(12): pp.2626-2631
Sen, et al., Biohydrogen and biomethane from water hyacinth (Eichhornia crassipes) fermentation: Effects of substrate concentration and incubation temperature [J]. international journal of hydrogen energy, 2011, 36, pp.14195-14203

Simulation study on a new type of cooling device used in heat dissipation of Server Chao Guo1,a, Fang Wang1,b, Yan Qu1,c and Na Jin1,d 1University of Shanghai for Science and Technology，Shanghai 200093，China a233155660@qq.com, bwang1996930@163.com, cquyan0911020105@163.com d1139819328@qq.com Keywords: Server CPU, Heat dissipation, Evaporative cooling, Air fluid temperature simulation Abstract: A new type of cooling device used for server is designed in this paper.
CPU cooling model The forced convection fin cooling model is shown in Fig.1 and the material is red copper.
Journal of Beijing university of aeronautics and astronautics, Vol.29 No.8(2003), p737-740 [6] Zhihui Wu, R.Du.
International Journal of Refrigeration, Vol.33 (2010), p1264-1276