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Introduction As a special processing technology, ultrasonic machining is almost suitable for all kinds of hard and brittle materials, and it has the advantages such as small cutting force, low cutting heat and so on.
So it has been widely used and rapidly developed in the hard and brittle materials field which is difficult to machining such as ceramics, glass, stone and cemented carbide.
Acknowledgements This work was financially supported by the Chinese National Science Foundation (50975080), Henan provincial key disciplines of Mechanical Manufacturing and its Automation.
International Journal of Machine Tools & Manufacture, 2007,47:1027-1033
Journal of Shanxi Normal University (natural science edition), 2005, 33(4):33-35.

The presupposition During the for convenience For calculating the finite element model, make the presuppositions as follow: (1) The materials of the blade is uniform, continual and isotropic
(2) The Poisson ratio of the blade material is constant
The mechanical property parameter of material: Young's modulus E = 6.4×1011 N/m2, Poisson ratio ν = 0.3, Density of the material ρ = 2.8×103 kg/m3.
F., Zhuang P., “Research of Measuring Theory and Method on Resonant Frequency of the Impeller Blades”, Journal of Shihezi University(Natural Science), Vol. 6(4) (2002), p. 315-320 (in Chinese) [2] Li Jing, Sun Qiang, “Study on the vibration fatigue life for aero-engine compressor blade”, Chinese Journal of Applied Mechanics, Vol. 28(2) (2011), p. 189-193 (in Chinese) [3] Ding Z.
Y., “A Study of the Vibration Characteristics of a Blade with Fatigue Crack Based on Finite Element Method”, Mechanical Science and Technology for Aerospace Engineering, Vol. 29(10) (2010), p. 1385-1388 (in Chinese) [4] Doebelin E.O, in: “System Modeling and Response”, New York (1980) [5] Song Zhaohong, in: “the Representative Fault Analysis for Aeroengine”, edtied by Peking Aerospace University Publications, Beijing (1993) [6] Zhao Zhenhua, Lü Wenliang, Chen Wei.

The Switching Power Supply Electromagnetic Analysis General Procedures and Simulation Wei ZHANG 1,a 1Faculty of Physics & Machinery and Electron Engineering, Xi'an University of Arts and Science, ,Xi'an,710065,China ae-mail: zhwei_top@126.com Keywords: Switching power supply; Finite element; Electromagnetic interference; General Procedures; Bridge circuit; APDL language Abstract.
The same type of components, on different occasions, different models may be chosen, we only need to change the element size, material type, structure parameters to complete the change of different models of the same type of components.
GUI access to the program through a variety of interactive features, commands, user manuals and reference materials, and complete the step by step throughout the analysis, but the whole analysis process is quite complicated.
[2] Zhang Wei, Wang Yin, Analyse the Field-circuit Coupling Model of the Switching Power Supply[J], Journal of Central South University of Science and Technology, January 2011
[3] Chenbin Tao, Switching power supply common mode EMI suppression technology research[D], Journal of Tianjin University,2008

Study on Extracting TB from Liubao Tea with Cellulase Auxiliary Method Yingzi HE 1,a , Xiao WANG 1,b , Xuehong ZHANG1,c 1Colloge of Chemistry and life science, Guangxi Teachers Education University, Nanning, China aemail: hyz6929@163.com; bemail: 877196738@qq.com; cemail: zhangxuehong@gxtc.edu.cn Keywords: Liubao tea, cellulose, theabrownin, extraction ratio Abstract: A new way using cellulase as auxiliary method to extract theabrownin(TB) from Guangxi Liubao Tea was proposed in this article.
Materials, reagents and experimental facilities Raw Materials and Chemical Reagents LiuBao tea of Guangxi (Tea factory of Guangxi Wuzhou provide); Cellulase: activity 0.3µ/mg, purchased by Sigma; Reagents: Trichloromethane, acetic ether, n-butyl alcohol.
Acknowledgements This work was financially supported by the Scientific and Technological Development Projects of Guangxi Zhuang Autonomous Region (Gui-Ke-Neng1348022-4) and the Natural Science Foundation of Guangxi Zhuang Autonomous Region Education Commission (201012MS138).
Journal of Tea Business (in Chinese).1999.
Chinese Journal of Experimental Traditional Medical Formulae(in Chinese).2011.

Study on the DEM Simulation of the Granular Railway Ballast Bed Tamping Xuejun Wang1, a, Yilin Chi1, b, Wei Li2, c, Taoyong Zhou1, d 1Faculty of Mechanical & Electrical Engineering,Kunming University of Science & Technology,253 Xue Fu Road, Kunming, 650093, P.R.
Conclusions A fast and simple original method to find the microcosmic characteristic of granular material has been developed.
Acknowledgements This work was financially supported by the National Natural Science Foundation (11002062).
[12] Lu, M. , McDowell, G.R. : submitted to Geotechnique, v 60, n 6, p 459-467, June 2010 [13] Xuejun Wang, Yilin Chi, The research of the numerical simulation on the granular ballast bed tamping.Advanced Materials Research Vols. 479-481 in 2012 [14] ZhaiWanMing, LinJianHui, WangKaiYun.
Vibration engineering journal, 2003 04 period.In Chinese

Materials and Methods Materals.
The strength of the stabilized specimens was measured by the LQ-100S testing instrument of pavement material strength, the loading speed was 1mm/min.
Acknowledgements Supported by National Nature Science Foundation of China (No. 51008007).
References [1] Hongfa Yu, Wei Sun, and Jiachun Wang: Journal of the Chinese Ceramic Society Vol. 31, (2003). p. 434 (In Chinese) [2] Wei Ding, Xiaoxuan MA, and Faguang Leng: Concrete Vol. 7, (2005). p. 78 (In Chinese) [3] Zhiping Peng, Jun Yang, and Yaoguang Chen: Chinese Journal of Geotechnical Engineering Vol. 33, (2010).
P. 136 (In Chinese) [4] Zhengxiong Zhang, Jialiang Yao: Civil Engineering Materials (China Communication Press, China 2008) (In Chinese) [5] Xin Huang, Xiaogang Yang, and Tongan Hu: Industrial Construction Vol. 9, (1994).

Comparing with the other methods: First, the FDTD method is derived directly from Maxwell equation, and the Maxwell equation gets discretization directly, there is little possibility for assumption of resulting in calculation error; Second, as a result of deriving directly from the Maxwell equation, this method has a wide range of versatile and can handle complex structural systems of a variety of shapes, a variety of materials without higher order derivatives of the discrete.
Pohl, “Resonant optical antennas,” Science, vol. 308, pp. 1607-1609, June 2005
Greffet, “Nanoantennas for light emission,” Science, vol. 308, no. 5728, pp. 1561-1563, June 2005
Kino, and C.F.Quate, “Optical antennas: Resonators for local field enhancement,” Journal of Applied Physics, vol. 94, no. 7, pp. 4632-4642, October 2003 [9] N.
Li, “The electric field enhancement and resonance in optical antenna composed of Au nanoparticles,” Journal of Electromagnetic Waves and Applications, vol. 23, pp. 535-548, 2009.

The concrete is considered as linear elastic material and the rocks are considered as elastic-plastic material.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (Grant No. 51179062) References [1] Tengjiao Zhang, Zhenzhong Shen, Liang Liang, et al.
South-to-North Water Transfers and Water Science & Technology. 2012,10(6),9~13.
Journal of Hydraulic Engineering, 2001, (2) : 8~15.
Journal of China Three Gorges University, 2010, ( 6) : 11~16.

The development of robotic fish was promoted through scientific approaches, such as fluid mechanics, materials engineering, vibrational science, tribology, electrical engineering, and control engineering.
First, the specifications, such as the robotic fish shape, size, elasticity, and material characteristics, are designed on the basis of its operational requirements.
Techniques for taking data measurements of the outer shape include modelling methods that use materials, and methods that use STL data taken with 3-D laser measurements.
References [1] I.Yamamoto, “Propulsion System with Flexible/Rigid Oscillating Fin.”, IEEE Journal of Oceanic Engineer-ing, vol.20, no.1, pp.1-10, 1995
[3] I.Yamamoto, “Marine Control Systems.”, International Journal of Robust and Nonlinear Control, IFAC, vol.11, no.13, Wiley, 2001

Introduction Polyurea is being increasingly used in many engineerings as a kind of protective material relies on its excellent mechanical properties.
Experimental Raw materials and coatings preparation.With MDI prepolymer made by the Function Material Institution of Qingdao Technological University, NCO content is 15.4%.
Journal of Architecture, 2005,21(6):77～79
Journal of Chemical Engineering of Chinese Universities, 2008,22(1): 106-112.
Corrosion science and protective technology. 2003,15(1):56-58.