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Experimental Major reagents and materials.
Compounding of different deliming materials.
The three composite materials, i.e.
Muralidharan: Journal of Cleaner Production Vol. 13 (2005), p. 591 [3] H.R.
Wang: Leather Science and Engineering Vol. 19 (2009), p. 45

Several standards for the raw materials and codes of practice for installing the floors are available all over the world [5].
It is applied as building materials, such as industrial floorings, ship decks, railway passenger coach floorings, hospital floors and ammunition factory floors etc.
Experimental Following raw materials were used in the study: light burned magnesite powder with a activity of 69%, an averaged particle size of about 62µm from Dashiqiao, Liaoning Province, China; magnesium chloride (MgCl2•6H2O) with a purity of 98.0%, from Tianjin Botong Chemical Co.
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Chau and Zongjin Li: Materials and Structures, Vol 41(2008), p. 853 [11] L Zhiguang: Shandong Coal Science and Technology, Vol 44(2007), p.70

Derin: International Journal of Refractory Metals and Hard Materials Vol. 29, (2011), p. 90 [3] C.L.
Puszynski: International Journal of Refractory Metals and Hard Materials Vol. 28, (2010), p. 605 [5] J.J.
Feng: Progress in Materials Science Vol. 39, (1995), p. 243 [6] S.
Niyomwas: Songklanakarin Journal of Science and Technology Vol. 30(2), (2008), p. 227 [7] S.
Niyomwas: Songklanakarin Journal of Science and Technology Vol. 32(2), (2010), p. 175 [8] S.

It can be seen that element movement is rigid movement, and normal and shear relative displacement reflect deformation (continuum) and interaction (non-continuum) of materials, These equations of above include motion (equations(1)-(2)), constitutive equation (equation(3), or(4)) and geometric equations((5),-(6)) , which constitute basic equations of distinct element method.
Acknowledge This work was supported by the Natural Science Foundation of Chongqing.
(No CSTC, 2012jjA900015, CSTC,2012jjA90008,CSTC,2010cA0005)and Nature Natural Science Foundation (No51276195).
References [1] Liu Da-ren, Hou Xiang-lin, Gao Yue-yang, Numerical Analysis and Imitation of Response on Construction Flaws Damage of Simply Supported Beam, Journal of Shenyang Architectural and Civil Engineering Institute 2006.3, pp188-189
[3] Zhao Xin-an, Numerical Simulation for Fracture Process of Concrete Wedge-Splitting Specimen, Journal of Shijiazhuang Railway Institute. 2003.3, pp12-14.

Impact Testing An Izod impact-testing machine (Model U-40, Chengde Materials Testing Co.
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[11] J.P.Trotignon and J.Verdu: Journal of Applied Polymer Science Vol. 34(1987),p. 19

This paper reports the efforts to develop a direct strain measurement system for micro/nano scale thin film materials.
Introduction Thin film materials are the basis of microelectronics devices and MEMS fabrication processes.
This is because the governing mechanisms for mechanical behavior of thin films often differ from those of bulk materials.
While tensile test has proven to be a universal method for extracing mechanical properties of materials, it has become difficult to monitor the applied load and displacement in such small scales.
Pharr, "an improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments", Journal of Materials Research, Vol. 7 (1992), pp. 1564-1583

Journal of Materials Processing Technology. 1998, 73(1-3), p.179-188
Journal of Materials Processing Technology. 2007, 189(1-3), p.292-295
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Materials Science and Engineering A. 2004, 378(1-2), p.180-184
Journal of Manufacturing Science and Engineering, 1998. 120(1): p. 21-27

Journal of Materials Processing Technology, 185: 147–151
Journal of Materials Processing Technology, 170: 579–585
Journal of Materials Processing Technology, 115: 14–19
Journal of Materials Processing Technology, 177:142-145
Journal of Materials Processing Technology, 190: 230–242

Materials and Methods Site description Zhalong natural wetland is located in the border region of Qiqihar and Daqing areas, which is also in the downstream watershed of Wuyuer river in Heilongjiang province(123°47′{TTP}8242 ~124°37′{TTP}8242 E, 46°52′{TTP}8242 ~47°32′{TTP}8242 N).
[5]Shuhong Ye,Yan Wang,Huiping Wan et.al: Chinese Journal of Soil Science Vol. 37(2006), p. 897-900, in Chinese
[10]Zhongmei Wan, Changchun Song:Chinese Journal of Soil Science Vol. 40(2009), p. 951-956, in Chinese
[12]Yang Wang, Jingshuang Liu, Jingxin Dou et.al:Journal of Zhejiang University: Agriculture and Life Sciences Vol. 35(2009), p. 691~698, in Chinese
[14]Xianli Zhao, Guangsheng Zhou, Li Zhou et.al: Chinese Journal of Soil Science Vol. 39(2008), p. 43-46, in Chinese

Introduction For many applications it is important to be able to determine how defects, and in particular pores, reduce the effective elastic properties of materials.
It is planned that the developed procedure will be applied to various non-random orientational and spatial distributions of defects in porous materials.
Average stress in matrix and average elastic energy of materials with misfitting inclusions.
The Journal of Chemical Physics 44, 3888
Science (New York, N.Y.) 303, 990–3