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Journal of Southeast University (Natural Science Edition) Vol. 40 (2010), p. 1073-1076
Journal of Beijing University of Aeronautics and Astronautics Vol. 34 (2008), p. 1423-1427
Journal of University of Electronic Science and Technology of China Vol. 39 (2010), p. 891-895
Advanced Materials Research Vol. 421 (2012), p. 402-405

Introduction Grinding processes are mainly technique employed widely as a finishing and difficult-to machine such as hardness and brittleness materials finishing.
Acknowledgement This research was financially supported by the National Natural Science Foundation of China (50875138); the National Basic Research Program of China (2009CB724401); the National Important Project of High-grade CNC Machine Tool (2009ZX04014-043)； the Shandong Provincial Natural Science Foundation of China (Z2008F11; ZR2009FZ007) and the Specialized Construct Fund for Taishan Scholars.
Jahanmir: Journal of Tribology ASME Vol.123 (2001), p. 101-107 [2] E.
Malkin: Journal for Engineering for Industry ASME Vol.114 (1992), p. 427-434 [4]C.
Chang: Tribology international Vol.30(1997), p. 575-581 [5 Bo Zhang,Akira Nakajima: Journal of Tribology Vol. 122(2000), p. 603-608 -20 -15 -10 -5 0 5 0 2 4 6 8 h0=20µm h0=35µm h0=50µm h0=80µm p(MPa) x(mm) 粗粗 光光 Rough Smooth Fig.4 Dynamic pressure at different minimal gaps -20 -15 -10 -5 0 5 0 1 2 3 D=300mm D=260mm D=220mm D=180mm p(MPa) x(mm) 粗粗 光光 Rough Smooth Fig.3 Dynamic pressure at different wheel diameters

Acknowledgment The authors wish to thank the support from Natural Science Foundation of China (50745017, 50875194) and Nature Science Research Program of Shaanxi province education department (08JK305).
Christian: Rapid Prototyping Journal Vol.6 (2002), p.259
Tang: Rapid Prototyping Journal Vol.12 (2006), p.12
Huang: Journal of Materials Processing Technology Vol.107 (2002) ,p.167

Because of dynamic work environment consisting of worker, materials, equipment, work space can be temporarily organized as dangerous location[11].
Roberts, Leading indicators of safety in virtual organizations, Safety Science 45 (10) (2007) 1013-1043
Kolton, Model for Automated Monitoring of Fall Hazards in Building Construction, Journal of Construction Engineering and Management 132 (7) (2006) 733-740
Rosenfeld, Spatial and Temporal Exposure to Safety Hazards in Construction, Journal of Construction Engineering and Management 135 (2009) 726
T Michael Toole, Increasing Engineers’ Role in Construction Safety: Opportunities and Barriers, Journal of Professional Issues in Engineering Education and Practice 131 (2005) 199

In cryogenic applications, a thorough understanding of regenerator properties such as material specific thermal capacity, porosity, flow distribution and heat transfer area are critical to a good regenerator [[] Robert A.Ackermann.
Inter- national Journal of Mass and Heat Transfer, 10(1997). p2341~ 2349. ] analyzed an single blow model to evaluate the thermal performance of cryocooler regenerators without considering the oscillating flow.
Inter- national Journal of Heat and Mass Transfer, 44(2001). p2493~2504. ] used a model taking the mesh as a non-Darcy, thermally non-equilibrium porous media to analyze the pulsating flow and accompanying heat transfer.
Inter- national Journal of Heat and Mass Transfer.49(2006). p1039~1049. ] is adopted to describe the energy transfer in the regenerator.
The fluid capacity ratio is mainly determined by gas mass flow rate, and the matrix capacity ratio is influenced by the material behavior.

Canadian Geotechnical Journal, (2008).Vol. 45(4), 511-534
Widger, Shear strength of unsaturated soils Canadian Getechnical Journal, (1978) 15, 313-321
Houlsby, The work input to an unsaturated granular material, geotechnique, (1997) 47, 193-196
Journal of Geotechnical and Environmental Engineer-ing, (2004) vol. 130, pp. 572-579
Soil Science Society of America, Madison, WI. (1990)

Empirical Modeling of High-speed WEDM Finishing in Gas Yumei Lu 1,2,a , Tong Wang 1,b , Chaoqun Wang1,c and Chengwen Wang1,d 1 Mechanical & Power Engineering College, Harbin University of Science &Technology, 52 Xuefu Road, Harbin, China, 150080 2School of Mechanical Engineering, Heilongjiang Institute of Science and Technology, Harbin, China, 150027 alym73217@163.com,bwangtong@hrbust.edu.cn,cwangchaoqunlvcha@163.cm, d24650581@qq.com Keywords: HS-WEDM in gas, Surface roughness, Cutting speed, Central composite design (CCD) Abstract.
Chinese Journal of Die and Mould Industry, 2008,34 (5) : 71-74
State of the art in wire electrical discharge machining (WEDM) [J].International Journal of Materials Processing Technology,2004, 44 (12-13) : 1247-1257
Experimental Studies on Dry WEDM in Improving Surface Quality.Materials Science Forum Vols,626-627 (2009) p .327
Dry WEDM in Improving HS-WEDMed Surface Quality Key Engineering Materials Vols,392-394 (2009), p.624

In the limit as , this power law approaches that of a rate-independent material.
Those caused from material in-homogeneity are reflected in the formula of the model.
Huang: A user-material subroutine incorporating single crystal plasticity in the abaqus finite element program，Mech,178 (1991) [8] Y.Q.
Gurtin: Journal of the Mechanics and Physics of Solids 51,1015-1058.(2003) [20] Rosakis.
Ponthot: International Journal of Solids and Structures 42,5615-5655.(2005) [23] Belytschko T., W.K.

Physics and chemistry of materials processing. 6 (2009) 41-47
(Special Issue on Techniques and Technologies) World Applied Sciences Journal. 22 (2013) 87-90
Manufacture of MAW electrodes from nanodisperse materials // World Applied Sciences Journal. 29 (6) (2014) 720-723
Part 1 - Materials, Methods of Research and Role of Chemical Elements, J.
Archives of Materials Science and Engineering. 2 (2008) 121-124

Development and utilization of resources can promote smooth development of eco –sports by providing with material foundation and spiritual impetus.
Existing a long time in civil society, there are diverse types of folk custom athletic games and recreation activities which are excellent materials of sports activities, according to the perspective of eco-sports.
References [1] Yuening Deng.The Construction of Sports Ecology, Journal of Physical Education, 9/2002, (6) P5-7
Hubei sports science and technology, 2007,26(4): p.412-413
[7] Huizeng Li, Aiming Gao.Rational thoughts on the new countryside development of ecological Sports, Journal of Hebei Normal University of science and technology, 2007, 6(1): p.103-106.