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International Journal of Mechanics and Mining Sciences, 1999, (36): 1013~1029
International Journal of Mechanics and Mining Sciences, 2004(41): 1055～1067
International Journal of rock mechanics & mining sciences, 2004, 41: 833～847
International Journal of rock mechanics & mining sciences, 2006(43) : 683～704
International Journal of rock mechanics & Mining Sciences, 2005(42): 542～549

These properties have led to the highest reported success rate in clinical use for all-ceramic dental restorative materials [2].
Materials and methods Preparation of glass with a variety of colors.
The materials prepared in this study were of analytical grade glass composition.
The raw materials were ball milled in ethanol in an agate ball mill, and then dried.
Ceramic Materials Harbin Institute of Technology Press.

The main materials were functional ceramic ball and copper-zinc alloy in the activating device.
The interaction of activation materials in water is stronger, so the activation effect better.
Wang, et al.: Journal of functional materials, (2010), 1(41): p.159 [6] Y.
Zhang, et al.: Advanced materials research, (2009), 96: p.35 [8] Q.
Zuo, Beijing teachers college journal (Natural Sciences Edtiom), (1986), p.57 [9] P.

Application of Ductile Fracture Criterion in Hot Forging Damage of Mn18Cr18N Steel Xingwang DUAN a, Xiuzhi ZHANG, Xinpeng WEI, Jiansheng LIU, Wenwu HE, Jihong TIAN College of Materials Science and Engineering , Taiyuan University of Science and Technology , Taiyuan 030024 , China awuyan428@sina.com Keywords: Fracture criterion, Meso-Damage, Mn18Cr18N steel, Void initiation, Finite element simulation Abstract.
These voids are generated by dislocation accumulation, the second phase particles, shrinkage and porosity, inclusions or other defects in materials.
The metal materials generate plastic deformation under external forces.
Cai: Journal of Plasticity Engineering, Vol. 3 (1996) No.4, pp.3-6(In Chinese)
Fagin: Materials Science and Engineering, A256 (1998), pp.92-110

Introduction Computer modeling is widely used in material science [1-6], since it allows us to take into account all the subtleties of interaction between dislocations and its effect on the mechanical characteristics of the material.
Mecking Physics and phenomenology of strain hardening: the FCC case, Progress in materials science 48 (2003) 171-273
Kurzydlowski Influence of the dislocation structure on the crack tip in highly deformed iron, MATERIALS SCIENCE-WROCLAW 23 (2005) 521
Firstov Critical density of dislocations during their rearrangement into polygonization walls, Electron Microscopy and Strength of Materials 25 (2019) 3/in Russian http://www.materials.kiev.ua/article/2896 [29] K.
Firstov Dislocation dynamics in the polycrystal in the presence of disclination wall, Electron Microscopy and Strength of Materials 21 (2015) 7/in Russian http://www.materials.kiev.ua/article/1725 [30] K.

Non-metallic materials mainly refer to some polymer materials.
Composite materials.
The Chinese Journal of Nonferrous Metals. 22(2012) 1945-1956
Materials Science and Engineering. (2004) 234-243
Solid lubricating materials.

In addition, the ash of burned sludge can be used to produce architectural materials.
Journal of University of South China(Science and Technology),2003, 17(4):87-90
Journal of Agro-environmental Science, 2003,22(2):199-202
Study and Measurement on the Use of Urban Sewage Sludge as Building Materials[J].
Journal of Tsinghua University(Science and Technology), 2001,41(10):90-92

College of Life Science, Hebei University, Baoding, P.R.
Materials and methods Liaohe River was sampled in June 2011.
Journal of Hebei University, 2007, 27(4):401~406
Journal of northeast forestry university, 2009, 37 (4): 40~42
Journal of Hainan normal university, 2009, 22(2):209~213.

So far, the researches on botanical pesticides using plants as raw materials are a hot research area in the world.
Materials and Methods The plants, Artemisia annua, Artemisia sieversiana, Artemisia mogolica, were from Majiagou in Harbin.
Acknowledgements This work was financially supported by the Nation Natural Science Foundation (30571500).
Journal of Stored Products Research, Vol.33(1997), p.7-15 [7] Isman M B.
Pest Management Science, Vol.64(2008), p.8-11 [8] Guiyi Zhang, Lijie Yu and Fengchun Wang.

Journal of Materials Science Letters, 7 (1998) p.955957 [7] Ling, L., Jill, S.
Journal of Petroleum Science and Engineering, 24 (1999) p. 75–83 [8] Bernaola, O.
Journal of Colloid and Interface Science, 267, (2003) p 86–91 [15] Ismail, M.
Journal of Applied Polymer Science, Vol. 90, (2003) p. 2156-2162 [17] Neal, C., William, A.
Advanced Materials Research, Vols, 79-82 (2009), p. 2183-2186 [25] Ismail, H., Shuhelmy, S., Edyham, M.