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Grain boundary diffusion of atoms occurred in various engineering materials at elevated temperatures.
Journal of materials Science Letters, 19(2000):473-475 [2] Jin Zhang, Zhifu Sun.
Materials Science Forum Vols. 488~489(June 2005) pp. 649~652 [5] Y.Gao, X.Xu, Z.Yan, G.
Materials Science and Engineering A 260 (1999) 55-71 [7] Tiefan Li.
Materials for Mechanical Engineering.

., Wuhan 430050,China 3 Key Laboratory for Silicate Materials Science and Engineering of Ministry of Education, Wuhan University of Technology, Wuhan 430070, China apnyzh@yahoo.com.cn, b303598871@qq.com Key words: Steel slag powder; ultrafine fly ash; ultrahigh performance concrete; durability; porosity.
This porous structure of UHPCs would definitely enable the material have excellent durability.
Experimental Program Materials.
This porous structure of UHPCs would definitely enable the material have excellent durability.
Ding: Journal of Wuhan University of Technolotgy, Materials Science Edition, Vol.25 (2010), p. 349 [4] S.

Introduction With the advantages of simple, reliable, adaptability and low cost, jaw crusher is widely used in metallurgy, mining, chemical industry and building materials fields.
With the development of science and technology, the traditional crusher products are increasingly exposed many design defects and deficiencies in performance and structure.
Mechanical Modeling (1) Material’s properties.
The optimized flywheel cannot just save the material.
Journal of Railway Science and Engineering, 2007, Issue 4, pp.88-92

The structure adopts wood structural materials which are produced by modern wood production technology.
The main component materials of these structures are clay brick, cement and steel.
Compare with the above three structure materials, wood absorb carbon dioxide and release oxygen in the growth process, the growth process of wood can purify air.
In fact, the combustion of wooden structure is not directly related to the combustion of building materials.
Chinese Science, E Series: Technological Science, Vol.39 No.5, p.874-877. (2009)

Chen2 1School of Materials Science and Engineering, University of Jinan, No.106, Jiwei Road, Jinan City, Shandong Province, 250022, P.R.
China 2School of Materials Science and Engineering, Beijing University of Science and Technology, Beijing, 100083, P.R.
Quest, Materials Science and Technology, Vol.20(2004), p.1357 [5] Z.Q.
Li, et al.: Materials Science and Technology Vol.19(2003), p.1709 [6] Z.Q Wang, X.F.Liu, X.F.
Bian: Journal of Materials Science Vol.40(2005), p.1047

According to the regulation about material properties in Load Code for the Design of Building Structure, parameters and element selected as table 2-1 below.
Figure 1 SOLID164 unit is a kind of 8 nodes unit Reductions (single point) integral and stickiness hourglass control have been applied at the default in order to get faster unit algorithm. 2.2 material model and constitutive relation Masonry is a biphasic composite material composed by blocks and mortar, reinforced concrete is a biphasic composite material composed by concrete and rebars, there are usually 2 types of models to do the finite element analysis: disjunctive model and whole continuum model.
The second way of modeling is used here, according to the constitutive test of masonry in reference[3] and the material introduction in reference[4] , masonry and reinforced concrete material in composite structure are all modeling as bilinear isotropic material.
Building Structures learned journal，1999，20（1）：31-38 [2] Wang Wanzhao, Yang Xiufeng, Zhou Wei.Seismic performance experiment on 8 floors building model mixed with Bricks and concrete shear wall structure.
Building Science ，1996，31（1）：10-17

Design of public facilities should consider the city geographical location, climate and other natural environment, pay attention to the harmony and unity of facilities and the natural environment[2].Designer should comply with nature, but also control the use and transform nature, and through the reasonable selection of materials, color, shape, make the public facilities, city landscape and the natural environment to achieve "harmony between man and nature" (the harmony and unity of the natural environment and human's life).For example: cold and dry climate in the north,in order to adjust the long monotonous colors in winter,the materials of public facilities should be used with warm texture of wood,and the color of public facilities should be bright eye-catching.
Warm and rainy in the South, the selection of materials should be paid attention to moisture rust, and be used of plastic or stainless steel material.The color should be also dominated by bright colors.
Because public facilities is an important part of city landscape, its role is in addition to its own material function, but also its ornamental and image.
Acknowledgements Thanks for the funding by xihua university industrial design industry research center of sichuan province education department of humanities and social science key research base, project number: GY-13ZC–07.
[2] Xin Liu, Journal of North China University of Technology.(1995),p.02

These properties suggest that lignin is one of a promising materials economically for preparing several types of adsorbents.
Materials and methods Materials.
Samples were prepared mixing 1 mg of material with 100 mg of spectroscopy grade KBr.
[4] Viesturs, T.D.G.Z.A.K.E.L.G.R.V.J.G.T.U., Lignin a useful bioresource for the production of sorption-active materials Bioresource Technology, 1999. 67( ): p. 221-228 [5] Srivastava S K, S.A.K.S.A., Studies on the uptake of lead and zinc by lignin obtained from black liquor- a paperindustry waste material.
Journal of Environmental Sciences, 2007. 19(11): p. 1305-1310

To elaborate on the concept of uncertainty propagation, consider a complex component incorporating inelastic materials, contacts, friction etc.
The model requires an initial specification of material properties, clearances and friction coefficients.
Level, “Fuzzy modal parameters”, Journal of Sound and Vibration, 2000, 797-812
Level, “Fuzzy modal finite element analysis of structures with imprecise material properties”, Journal of Sound and Vibration, 2000, 353-364
Elishakoff, “Convex Models of Uncertainty in Applied Mechanics”, Elsevier Science Publishers, 1990

Recently several groups is undertaking studies on a varied range of materials and potential uses.
In this paper the material of AISI 304 stainless steel is used and the materials properties depend on temperature are considered [8].
Richard Zhang, Xianfan Xu, High Precision micro scale bending by pulsed and CW lasers, Journal of Manufacturing Science and Engineering.
Xu, Numerical Simulation of Pulsed Laser Bending, Journal of Applied Mechanics.Vol.69 (2002) 254-260
Lin, An Analytical Model to Estimate Angle Formed by Laser, Materials Processing Technology. 108(2001)314-319