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Based on the dynamic spherical cavity expansion(SCE) theory of the concrete materials and the analysis of the experimental data, both the model of the petaling penetration with low speed and the model of the round hole penetration with high speed are constructed to describe the penetration of the grooved-tapered projectile in this paper.
And the model of the petaling penetration with low speed and the model of the round hole penetration with high speed using the SCE theory of the concrete materials are built.
Acknowledgment The research work in this paper was supported by the Defense Industrial Technology Development Program (C1520110001) and the National Nature Science Foundation of China (NSFC) (11202029,11390362).
International Journal of Modern Physics B, Vol.22(2008), pp. 1087-1093
International Journal of Nonlinear Sciences and Numerical Simulation, Vol. 13, Isu2(2012), pp. 137–143

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Introduction With the rapid development of global economy, the demand for food wrap materials is rising sharply.
Compared with other food wrap materials, such as plastics, paper is often more challenging because of favorable biodegradability and reusability.
Experimental Materials. 1000μg/mL lead standard solution was obtained from National Standard Research Center, nitric acid(superior quality pure) was provided by Sinopharm Chemical Reagent Co.
Paper samples were folded into bowl shape, the ratio of volume to area were calculated to be 0.63 to 1.12 ml/cm2, fit the requirement of American Society for Testing and Materials.
[7] WANG Jin, LI Xuan: Chinese Journal of Spectroscopy Laboratory Vol. 6 (2009), p. 14523-1456.

The materials properties comprised of the cylinder are shown in Table 1.
Fig.1 the divided zones in cylinder Fig.2 the cross section of cylinder and materials Table 1 the material properties Young's Modulus（MPa） Shear Modulus（MPa） Poisson's Ratio Name Material EX EY EZ GX GY GZ PRXY Outer Carbon Fiber 2.3*10 5 2000 2000 2000 2000 2000 0.32 Liner HDPE 1200 1200 1200 - - - 0.3 Valve Carbon Steel 2.1E5 2.1E5 2.1E5 - - - 0.3 Numerical Simulation for Damage Tolerance More and more composite cylinders are used to contain compressed natural gas for vehicles.
In terms of the materials used in the composite cylinder, the material property of the inner is isotropic and the outer part is comprised of fiber reinforced plastic (FRP) such as carbon fiber and epoxy resin matrix composite. 3D 8-node layered structural solid element is capable to mesh the outer part with anisotropic material property.
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Two materials have been used for all the elements of the centrifugal fan impeller: steel and aluminium.
· Applying the material.
Two materials have been used: steel with density of 7860 kg/m3 and aluminium with density of 2710 kg/m3, resulting thus the blade weights presented in Fig. 2.
Zahariea, Comparative Study of Blade Shape Design of Centrifugal Fan Impeller, Applied Mechanics and Materials.
Karuppa, Numerical Design and Parametric Optimization of Centrifugal Fans with Airfoil Blade Impellers, Research Journal of Recent Sciences. 1, 10 (2012) 7-11

Anticorrosion Behaviors of Quaternary Polyethyleneimine in Acidic Environment Xin ZHANGa, Xuedong WU b, Jianzhong LI c, Hui WANG， Dan DAI, Zhenlun SONG Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo China 315021 a email:zxyuzuodeyun@163.com, bemail: xdwu@nimte.ac.cn, cemail: jianzhongli@nimte.ac.cn Keywords: Anticorrosion; Polymeric film; Polyethyleneimine; Adsorption.
This work is expected to provide some valuable information for the molecular design and applications of polymeric corrosion inhibitors in corrosion science. 2 Experimental sections 2.1 Materials and Instruments Quaternary polyethyleneimine was prepared personally according to the reference [14].
Quraishi: Corrosion Science Vol. 36 (1994), p.79 [5] M.
Zheng: Materials Chemistry and Physics Vol. 77(2002), p.655 [7] Y.
Moritz: Journal of Controlled Release Vol. 102(2005), p.737 [13] M.

Introduction Grinding processes are mainly technique employed widely as a finishing and difficult-to machine such as hardness and brittleness materials finishing.
The grinding wheel is a porous solid disk consisting of abrasive grain, bond materials and pores of irregular shapes and different sizes.
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Journal of Capital Normal University (Natural Science Edition), Vol. 27 (2006), p. 57-63 [5] Haberl R, Perfler R, Mayer H: Constructed Wetland in Europe.
C.: Beneficial Effects of Plants in the Remediation of Soil and Groundwater Contaminated with Organic materials-Critical Reviews.
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Materials Transaction, Vol. 44 (2003), p. 305-312 [20] Richardson C.J.: Mechanisms Controlling Phosphorus Retention Capacity in Freshwater Wetlands.

Materials and Methods The experiment materials N.
Acknowledgements The present work was partly supported by national natural science fund project (NO.30800685).
Journal of Changshu Institute of Technology(Natural Sciences),2007,21(4):55-58
Trace Elements Determination Methods for Foods.Journal of Henan university of science and Technology(Natural Science), 2004,25(5):89-92
Simultaneous determination of trace elements in Evodia rutaecarpa(Juss.)Benth by ICP-AES.Journal of ZheJiang University of Technology,2006,34(1):43-44,55

At present, the application of chrysotile asbestos tailings and rock forming serpentine is roughly same, mainly concentrated in following several aspects: (1) recycling short asbestos fiber for product that asbestos quality request is not high (asbestos cement products, heavy-duty brake shoe, asphalt products, bonding material, etc.); (2) According to certain proportion was made for baking-free brick by fly ash, etc; (3)to develop building materials; (4) to make magnesia porcelain ingredients.
Hu Zhangwen [6] studied on the process of the purification of raw magnesium sulfate from the sulfuric acid leaching filtrate of serpentine, then used the purified magnesium and aqueous ammonia as raw materials to prepare nanometer magnesium hydroxide.
[4] L.Yu, The experiment research of producing refractory materials with serpentine, Multipurpose Utilization of Mineral Resources. 6(2003)47-51
[18] Q.M.Feng,Q.Wang,K.Liu, Adsorption kinetics and thermodynamics of copper(II) on chrysotile, Journal of Central South University(Science and Technology). 11(2011)3225-3231
[23] B.S.Zhang,B.X.Xun,Y.Xu, Self-restoration effect and action mechanism of tribopairs consisting of analogue shaft-bushing induced by serpentine powders, Materials Science And Engineering of Powder Metallurgy. 3(2013)346-352