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Fig.2 The finite element model of beam Fig.1 The beam’s original design structure 2.2 Modal analysis of the beam The beam’s material is Q235, modulus of elasticity E = 2.1 x 1011 Pa, Poisson's ratio v = 0.26, density ρ= 7.8×103kg/m3.
In the above two kinds of structure, the maximum stress are less than the material’s allowable stress.
Journal of Qingdao University of Science and Technology.
Coal Science and Technology, Vol.38, No.7 (2010), p.65-67
Journal of Strain Analysis for Engineering Design, Vol.40, No.4(2005), p.301-326.

Introduction Natural rubber (NR) from Hevea Brasiliensis is a high molecular-weight material and its chemical largely constitutes cis-1,4-polyisoprene and non-rubber components such as lipids, proteins, sugar, inorganic compounds, etc.
NR is a non-polar and large molecular-weight material, it is laboriously compatible or miscible with polar chemical/filler in mixing and compounding processes.
It was found that PP surface became more hydrophilic leading to an improvement on dispersion of PP in the polar solvent and better adhesion to other materials.
Shinn ,Graft copolymerization of mixtures of acrylic acid and acrylamide onto polypropylene film, Journal of Polymer Science. 72 (1999) 251-256
Kawahara, Nano-matrix structure formed by graft-copolymerization of styrene onto natural rubber, European Polymer Journal. 43 (2007) 3208–3214

The data show the maximum tension stress is less than 3MPa, namely, less than the tension strength of the concrete material.
Acknowledgements The research has been supported in part by the National Natural Science Foundation of China (Grant No. 50908169), Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 200802471095) and Shanghai Pujiang Program.
M Hiller: Canadian Geotechnical Journal, Vol. 37 (2000), p.700-711
Yazdani Ardakani et al.: Journal of Materials Science (1987), p. 625-628
Yuan: submitted to Advanced Material Research (2011)

The finite-element Lagrangian method contained a new method for isolating the discontinuity surfaces of materials.
Especially for this purpose, the mobile laboratory "Behavior of natural materials under explosion" was organized, its main purpose a snap analysis of the behavior of any natural materials under explosive loading.
Therefore, when modeling materials fracture, both types of fracture should be considered.
According to [20], it contains a new method of isolating the discontinuity surfaces of materials.
In other words, the method contained a new approach for isolating the discontinuity surfaces of materials.

This study was intended to develop new materials for water-absorbing pavement blocks to control pavement temperature and storm water runoff.
Some factors affecting the formation of a heat island are the intensive use of asphalt and diverse construction materials, mainly concrete [1].
Active carbon, sepiolite and super absorbent polymer help create water ponds within the road pavement materials.
Kim, et al: Material Science Forum, 510-511 (2006) p. 914-917
[6]Yuliya Kalmykova, Ann-Margret Strom vall, Britt-Marie Steenari: Journal of Hazardous Materials 152 (2008) p. 885-891.

The obtained nitrogen-doped mesoporous carbon (NMC) shows good capacitances as electrode materials for EDLCs.
The N2 adsorption-desorption isotherms of NMC materials are summarized in Fig. 1d.
The excellent performance makes NMC-5 as the promising electrode materials for the applications of supercapacitors.
Vol. 45 (2007), p. 1757 [8] Min-Kang Seo, Sunhye Yang, Ick-Jun Kim and Soo-Jin Park: Materials Research Bulletin.
Gao: Journal of Power Sources.

., LTD Xintai, Shandong, China 2 College of Resource and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong, China aZhangming@126.com, bnjglxh@126.com Keywords: Mining height, Water flowing fractured zone, Numerical simulation, Similar material simulation Abstract.
To verify the accuracy of numerical simulation, similar material simulation of 3m mining height is conducted.
The materials are plaster, filler and calcium carbonate, and sand is used as filler.
Table 5 shows that Mica is sprinkled between the stratum as stratification, and material maxing ratio.
[2] Bo Liu, Xianwei Li and Longguang Tao: submitted to Chinese Journal Geotechnical Engineering (1998,in Chinese)

Effects of Electromagnetic Pump Casting on Microstructure and Mechanical Properties of ZLSi9Mg Casting Aluminum Alloy Jingzhi Danga, Jing Yang, Jun Cheng School of Materials Science and Engineering, North University of China,Taiyuan 030051,China a wxdjz11@nuc.edu.cn Keywords: ZLSi9Mg aluminum casting alloy; Electromagnetic pump; Microstructure; Mechanical property; Fluidity Abstract.
Journal of Northeastern University(Natural Science).2002,23(8): no.8 [6] Xu Guangming ,Bao Weiping, Cui Jianzhong.
Journal of Northeastern University(Natural Science).2004,25(1):no.1
The laboratory of the study on the course of material electromagnetism in Northeastern University, 2001
Materials Science and Engineering, Aug 2000, A287: 205-212

Introduction With about thirty-odd years' history of development and application, PCBN as a cutting tool material, has shown its remarkable cutting performance in the hard cutting and machining of such intractable materials as hardened steel.
Acknowledgements This project would not have been possible without support from National Natural Science Foundation of China (No.50575061).
Özel: Journal of Material Processing Technology, Vol.141 (2003), pp.284
Fang and Q.Wu: International Journal of Machine Tools and Manufacture, Vol.8 (2005), pp.1178
Chen: Process Materials Science Forum, Vol.532-533 (2006), pp.412.

Materials and Methods Materials.
Naresuan Univerity Journal.
Innovative Food Science and Emerging Technologies.
Journal of Medicinal Plants Research.
Advanced Materials Research.