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It is assumed that the soil has no material damping.
For the chosen material data if the spring force exceeds the pre-defined friction force Fr, sliding takes place and consequently energy will be dissipated.
Journal of Faculty of Environmental Science and Technology, Okayama University 2004; 9: pp 111-116
[8] Adam, M., and Chouw, N., “Reduction of footing response to man-made excitations by using a wave impeding barrier”, JSCE Journal of Applied Mechanics, Vol. 4, 2001, pp. 423-431
Research Journal, Faculty of Engineering (Mattaria), Helwan University, Egypt, 82, 2002, pp. 59-75

The self-excited vibration characteristics of this new technology can enhance the rate of debris removal, improve the discharging gap effectively, and thus raise the material removal rate.
Acknowledgments The work is supported by a grant from the National Natural Science Foundation of China (Grant No.: 50775128) Reference [1] K.Liu, E.Ferraris, J.Peirs.
The International Journal of Advanced Manufacturing Technology. 4(2009):1-4
JOURNAL OF SHANGHAI JIAOTONG UNIVERSITY. 1(2008):83-87
Journal of materials processing technology. 209(2009):1826-1834

In this experiment, Mikron 600U was used, 25# transformer oil was used as cooling fluid, tool was 10mm ball end mill, material of impeller was 2A70 aluminum alloy.
Fig.9 Cutting force distribution in one cutting cycle with feed speed 2000mm/min References [1] M.J.Feng, X.H.Wang, C.Zhao and G.B.Bu: Lecture Notes in Computer Science Vol.5315(2008) No.2, p.1030-1037 [2] R.j.Liang, N.S.Wang and C.Y.Jiang: Journal of Nanjing University of Aeronautics and Astronautics Vol. 40 (2008)No.1, p. 89-93
Zuo: Key Engineering Materials Vol.375-376(2008), p. 390-403
-D.Bouzakis, P.Aichouh and K.Efstathiou: International Journal of Machine Tools & Manufacture Vol.43 ( 2003) No.5, p. 499-514 [6] M.Hashimoto, E.Marui and S.
Kato: International Journal of Machine Tools and Manufacture Vol. 36 (1996) No.2, p. 183-201

Dudea1,f Department of Prosthodontics and Dental materials,Faculty of Dentistry, University of Medicine and Pharmacy “IuliuHatieganu”, Clinicilor 32 Street, Cluj-Napoca, Romania 2 Faculty of Mathematics and Computer Science,Babeş-Bolyai University, 58-60 TeodorMihali Street,Cluj-Napoca, Romania 3 Department of Statistics, Babeş-Bolyai University, 58-60 TeodorMihali Street,Cluj-Napoca, Romania abogdanculic@yahoo.com (Corresponding author), b perfidioara@yahoo.co.uk, ccristina_gasparik@yahoo.co, dcarina_gavrila@hotmail.com, ecristian.dragos@econ.ubbcluj.ro, fddudea@umfcluj.ro Keywords: dental color, color parameters,spectrophotometer, digital photography, CIE Lab Abstract In this study we evaluate a new computer software (Toodent) aimed to calculate tooth color parameters from digital images taken in a general practice working conditions.
Material and methods 26 digital images of the VitaPan 3D Master (3DM)shade tabs (Fig.1) were taken using aphotographic system: body Canon 400D, Canon 100mm lenses, and CanonMR14-EX ring flash.
Journal of Prosthetic Dentistry 2007; 97:200–8
Lee, Dental shade matching using a digital camera, Journal of Color and Appearance in Dentistry 2012, Volume 40, Supplement 2:3-10
European journal of Esthetic Dentistry;5(2):204-215

Application of The Vibration to The Top Coal Caving Xuan Xiang Jian1, a, Yong Jun Yang2, b and Yi Lin3, c 1,2 School of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou Jiangsu, china, 221116 3 School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou Jiangsu, china, 221116 ajanexuanxiang@cumt.edu.cn, byangyongjuncumt@163.com, c378565871@qq.com Keywords: top coal caving, recovery ratio, arch structure, vibration, control system, industrial experiment Abstract.
The coal is considered as brittle material.
Journal Of China Coal Society.
The Chinese Journal of Nonferrous Metals(2004) NO.3 , p. 661(in Chinese) [5] J.L.
Chinese Journal of Rock Mechanics and Engineering.

The noise magnetic fields can be divided into two parts: hard magnetic material and soft magnetic material caused magnetic field.
The soft magnetic fields are produced by soft magnetic material such as circuit and coil in the IMU system.
Chinese Journal of Sensors and Actuators, 2007, 6: 031
Journal of guidance, control, and dynamics, 2000, 23(6): 1085-1087
JOURNAL-NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY, 2002, 26(4; ISSU 125): 376-380

Experimental Materials.
Cyanuric chloride was purchased from Shanghai Meilaipo Chemical Materials Co.
Therefore, charring agent was fit for blending with PP materials.
Acknowledgements Research team ( Material Science and Engineering institute room C542 ) and Material Testing and Analysis Center in Donghua university are sincerely acknowledged.
Wang :Macromolecular Materials and Engineering, 2004, 289(2), 208-212

In the determination of plane strain fracture toughness test [9], CT specimen is recommended by ASTM E1547, especially used for assessment and research of the nuclear pressure vessel materials.
Fig.2 The relationship between C*and A Fig.3 Solution on * by RSM Projects of solution to creep fracture mechanics parameter C* based on RSM Four ideal elastic-power creep rate materials with different creep coefficient and creep exponent shown as Table 1 are used to research RSM for solving the creep fracture mechanics parameters C*.The data of material 1 and material 2 in Table 1 are derived from 1Cr0.5Mo and 1.25Cr0.5Mo respectively when they are at 538 degrees, and the other two materials are hypothetical.
Tab.1 Mechanical property utilized in C* calculation MATERIAL Material1 175 9.03 0.3 Material 2 175 9.36 0.3 Material 3 175 9.03 0.3 Material 4 175 9.03 0.3 Using finite element analysis software - ABAQUS, the element type selects eight node quadratic reduced integration element (CPE8R), and width is 24mm, and meshing is shown in Fig. 4.
References [1] S Tu, J Gong, X Ling: Journal of Nanjing University of Chemical Technology.
Science Press, Beijing (2003) [4] R.A.

The workpiece is 60×30×10mm block and the materials are Si3N4 ceramics and Al2O3 ceramics.
The workpiece materials are Si3N4 and Al2O3.
The mechanism of micro-detonation arc generation and material removal of different materials are studied.
High temperature makes materials melting (for Al2O3) or decomposing (for Si3N4) and the intensive impact effect throws materials out from pits.
References [1] Xinli Tian et al., "The new technology of engineering ceramic machining by electrode micro-detonation", Materials Science Forum, vol 626-627, 2009, p. 565-570

Two prongs connected at one end make a resonator whose resonance frequency is defined by the properties of the material from which it is made and by its geometry.
Acknowledgment This work was supported by the Special Research Fund for Doctoral Program of Higher Education (Project Grant No. 200802140005) , the Specific Foundations for Science Technology Innovation Talent of the Harbin Science Technology Bureau, China (Project Grant No. 2007RFQXG054),Foundation of Hei Longjiang Educational Committee Project Grant No. 11551074) and State Key Laboratory of Robotics and System (Project Grant No.
B.: IEEE Sensors Journal Vol. 1 (2001), p.79
R.: IEEE Sensor Journal Vol. 1 (2001), p.62
E.: American Journal of Physics Vol75 (2007), p.415