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Si NPs is a new generation of optoelectronic semiconductor materials, has a wide usesin semiconductors, and is also a high power laser source material.
Environmental Science & Technology, 2007, 41(24): 8484-8490
Nanostructured materials for electrochemical energy conversion and storage devices[J].
Advanced Materials, 2008, 20(15): 2878-2887
Journal of hazardous materials, 2010, 181(1): 686-691.

Introduction The China's corporations producing potassium chloride were mainly located in Cha Er Han area in Qinghai province, and the main raw material was from decomposition of carnallite[1][2].
Material and Experimental Materials.
Zhao: Journal of Qinghai University (Nature Science).Vol. 24 (2006), p. 34-37 [2] P.
Ma: Advances in Earth Sciences.
Zhang: Journal of Salt Lake Research.

By validation, we can draw the conclusions: when the non-homogeneous material parameters are degenerated (), the crack-tip higher order fields for FGMs shells are the same as the homogeneous shells.
Acknowledgements The research is supported by the National Natural Science Foundation of China (No.11172332, No.90305023) Reference [1] Delale .F. and Erdogan.
F.: Journal of Applied Mechanics Vol. 50 (1983), p. 609 [2] Liu Chuntu, Jiang Chiping: Fracture Mechanics for plates and shells (Defense Industry Press,Beijing,2000)
Reddy: International Journal of Solids and Structures Vol. 44 (2007), p. 2036 [5] Y.Dai, L.
Zhang, S.M.Li, J.F.Liu, X.Chong: Science China Vol. 8 (2012), p. 852

Photonic band-gaps in porous silicon based mirrors with an ellipse profile refractive index Shuanming Li 1, a, Furu Zhong2,b ， Zhenhong Jia 3 and Min Tian 4 1, 2, 4 College of Information Science and Technology, Shihezi University, Shihezi 832003, China 3 College of Information Science and Engineering Xinjiang University, Urumqi 830046, China alsm_inf@shzu.edu.cn , bzhfuru@163.com Keywords: Porous silicon, photonic crystals (PCs), ellipse refractive index.
Such materials have many applications such as omnidirectional mirrors [1-2], biological molecules detection [3] and has excellent thermal and mechanical properties, and it is compatible with the silicon-based microelectronics technology.
Saldaña: Journal of applied physics Vol.100, (2006), 044911
[2] J.O.Estevez, J.Arriaga, A.Méndez Blas and V.Agarwal: Journal of applied physics Vol.93, (2008), 191915

Materials and methods Chemicals.
Journal of Nutrition, 2008, 30(1): 102-105.
Medicine Journal of Shan Xi, 2007, 36 (12):1682-1684.
Chinese Journal of Health Laboratory Technology, 2005, 15 (5):528-530.
Journal of Hebei Medical University, 2007, 28 (3):237-240.

Most polymeric materials ignore microwave frequencies due to their low dipole moment.
Results and Discussion The main task in the formation of composite materials is the qualitative distribution of modifying materials in the polymer matrix.
Gomez, Microwave processing of calcium zirconate from CaO and ZrO2, Advances in Technology and Materials Processing Journal, 5[2] (2003) 92-97
Zavrazhina, Microwave modification of polymer-carbon materials, Materials Science Forum, Volume 945 (2018) 443-447
Journal of Molecular Liquids, Vol. 253 (2018) 340-346.

Moosavi Nezhad: Journal of Materials Processing Technology Vol. 199 (2008), p. 124
Stasko: Journal of Achievements in Materials And Manufacturing Engineering Vol. 37 (2009), p. 480
Dobrzański, Selection method of steel grade with required hardenability, Journal of Achievements in Materials and Manufacturing Engineering Vol. 17 (2006), p. 1
[6] H.S Fong: Journal of Materials Processing Technology Vol. 98 (1-2) (1993), p. 221
Sietsma: Material Science & Technology Vol. 25 (2009), p. 1009

Emory, Science, 275 (1997) 1102-1106
Mirkin, Science, 297 (2002) 1536-1540
Suh, Nature materials, 9 (2009) 60-67
Kim, Chemistry-A European Journal, 16 (2010) 1351-1355
Bohn, Journal of Colloid and Interface Science, 26 (1968) 62-69

Model Table 1. the parameter table of element mechanical properties for samples Sample sizes[mm] Elastic modulus [MPa] Poisson's ratio Homogeneous degree average Homogeneous degree average non-uniform sample uniform sample 100×50 3 1000 60000 100 0.25 Calculation results Through the comparative study of meshing impact on macro behaviors from two kinds of different evenness materials, Table 2 as the results show that size ranges are not sensitive to the macro behavior of uniform materials but non-uniform materials within a certain range of the basic element sizes.
Fig.6. the rupture form diagrams of samples constituted by different scales elements Conclusion The numerical simulation of rock sample destruction has been done under the different element size through the uniaxial compression function, and analysis results can be found: (1) In the ranges of a certain basic element size, the macro behavior of uniform materials is non-sensitive for size changes, but the one of non-uniform materials is very sensitive
Beijing: Science Press, 2003 (In Chinese)
Journal of Geotechnical Engineering, 22 (6): 705-710(2000) (In Chinese)
Journal of Rock Mechanics and Engineering, 22 (1): 24-29(2003)

Introduction Graded macadam is discrete material, has the property of do not transfer tensile stress and tensile strain.
Chinese Journal of Geotechnical Engineering, Vol.20, No.2 (1998), p.93-96
Journal of Changsha University of Science and Technology (Natural Science), Vol.8, No.1 (2011), p.1-6
Journal of Heifei University of Technology, Vol.32, No.4 (2009), p.511-514
Journal of Shenyang JianzhuUniversity (Natural Science), Vol.27, No.1 (2011), p.64-69