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Introduction The wind-blown sand problem results from the erosion, transportation and deposition of the Earth’ surface material driven by wind-sand flow[1].
Journal of Desert Research, 1999, 19(1): 43-45
Journal of Soil and Water conservation, 2013, 27(2): 13-19
Journal of Beijing Forestry University, 2010, 32(4): 12-16
Journal of Central South University of Forestry & Technology, 2012, 32(6): 1-7

We build the model of the platen by using APDL, set material properties and mesh the model with 10-node SOLID92.
References [1] D.S.Ou, X.X.Zhou: Journal of Machine design, Vol.25(2008), p.38-41.
(in Chinese) [4] J.Ying,C.Y.Li: Journal of Zhejiang University (Engineering Science), Vol.40(2006), p.937-941.
[6] Y.T.Zheng, G.B.Cai, J.Chen: Journal of Aerospace Power, Vol.22(2007), p.1554-1559.
(in Chinese) [7] B.Chen, X.Xu, G.B.Cai: Journal of Astronautics, Vol.27(2006), p.1010-1015,1101

Acknowledgement This work was financially supported by the National Science Fundamental Project (51178176) and Special funds for basic research expenses of the Central Universities of Hunan University.
Journal of Architecture and Civil Engineering (in Chinese), Vol. 26. (2009), p30
Chinese Journal of Material Research (in Chinese).Vol.8.(1994),p190
Journal of Bionic Engineering.Vol.7.(2008),p233
China Civil Engineering Journal (in Chinese), Vol.38. (2005), p20.

The study doesn’t have a uniform measurement of human capital and material capital, causing no way to explain between physical capital and human capital which is more efficient.
References [1] Lucas, Journal of Monetary Economics, 1988 (22): 3-42
[2] Rome, Journal of political Economy, 1990 (10): 71-102
[3] Mankiw, Gregory, David Romer and David Weil, Quarterly Journal of Economics, 1992 (107): 407-437
[4] Hua Liu, and Gang Li and Xumin Zhu, 2004, Journal of Huazhong University of Science and Technology, 2004(7).

On the other hand, thermal diffusivity, which controls the rate at which heat dissipates through a material, is also important in processes where temperature changes with time.
Chinese Journal of Geophysics. 2005,Vol 48 , No.1. 165-172
Journal of Geophysical Research. 1971,76, 391–3401
Journal of Volcanology and Geothermal Research, 1984, 20, 145–153
Journal of Geophysical Research 76 (5), 1278–1308

(a) In the front of pier (b) behind the pier Figure 9 Maximum scour depth Acknowledge The authors would like to appreciate the research support from National Science Council of the Republic of China with the project no. 99-2625-M-451-001, and China Engineering Consultants, Inc., Taiwan.
J., Founctional Trends of Scour at Bridge Piers, Journal of Hydraulic Engineering, ASCE, Vol.112 (1986), No.3, pp.1~13
[2] Lai Jihn-Sung, Chang Wen-Yi, and Yen Chin-Lien, Maximum Local Scour Depth at Bridge Piers under Unsteady Flow, Journal of Hydraulic Engineering, ASCE, Vol.135 (2009), pp. 609~620
A., Experimental Investigation of Clear-Water Local Scour of Compound Piers, Journal of Hydraulic Engineering, ASCE, Vol. 136, (2010), pp. 343~351
Loose boundary hydraulics, 3rd edition, Pergamon Press. (1990) [6] Neill, C.R., "Note on initial movement of coarse uniform bed material," Journal of Hydraulic Research, Vol.17, No.2 (1968), pp.247-249.

Material and method The study involved a comparison of data from the analysis of nine bone samples measuring 10.0 mm in diameter and 8.0 mm in height.
Topoliński, The Relationship between Trabecular Bone Structure Modeling Methods and the Elastic Modulus as Calculated by FEM, The Scientific World Journal, Volume 2012, Article ID 827196, doi:10.1100/2012/827196 [3] J.
Weinans, Introduction and evaluation of a gray-value voxel conversion technique, Journal of Biomechanics, 34 (2001) 513–51 [4] D.
Rüegsegger, Finite element analysis of trabecular bone structure: a comparison of image-based meshing techniques, Journal of Biomechanics, 31 (1998) 1187–1192 [6] B. van Rietbergen, H.
Odgaard, A new method to determine trabecular bone elastic properties and loading using micromechanical finite-element models, Journal of Biomechanics, 28 (1995) 69–81 [7] T.

Classification of diversification activity main types Economic science subdivides diversification activity into several types.
Journal of Multinational Financial Management.
Journal of International Management. 1999, 115–140s
Scandinavian Journal of Management, 2009, 352—362
Journal of Environmental Management. 2010, 1556-1565s

He is engaged in the teaching and research of composite material mechanics。
Journal of Chongqing Science and Technology College, 2005,7 (4), 6-8
Journal of Computer Applications, 2006,26 (7) :25-27
Journal of Dalian University of Technology, 2006,46 (4) :561-566
Journal of Suzhou University, 2003,23 (6).

Study of sliding wear was conducted by many researchers by using different materials to identify the properties of friction and wear of sliding [2].
There are many researchers conduct study on sliding wear and plasticity of different materials.
Tribology is concerned as a branch  mechanical engineering and materials science.
In addition this study will assist in predicting the stress and strain distribution which may lead to wear of materials.
International Journal of Plasticity, 24 (2008), 1481–1515