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This will inevitably cause that a large number of brick-making equipments will be abandoned, directly affect the enterprises which use the rivers and lakes silt as a raw material for the production of sintered wall materials products.
Journal of Hazardous Materials, 2012 (203–204):53-61
[4] X.Zhang, X.H.Zhu, A.D.Zhu, et al: Wall materials innovation and building energy conservation Vol. 12 (2012), p. 18-26
[7]L.Xiao,S.W.Zhao:Wall materials innovation and building energy conservation,01,pp.60-61,2008
[13] C.Liu, S.D.Zhao: Mechanical Science and Technology Vol. 06 (2013), p. 796-800.

Test Materials and Experimental Methods Test materials.
There are two kinds of materials used in the test: Si3N4 and Cr26.
Acknowledgements The research is supported by the National Natural Science Foundation of China (project No: 50676044) and Beijing Natural Science Foundation (project No: 3072008).
Xu, et al.: Key Engineering materials.
Liu: Journal of Hydraulic Engineering.

Journal of Shanghai Jiaotong University.2002, 36(11): 1612-1615
Journal of Aerospace Power, 2004, 19(4):550-556
Journal of Aerospace Power, 2006, 21(5):930- 936
Journal of National University of Defense Technology, 1999, 21(2):14-16
Journal of Aerospace Power, 2009, 24(12):2649-2654

Introduction The fabrication of nanometer-sized materials has attracted considerable attention for their potential uses in both mesoscopic research and the development of nano-devices.
GaN materials with low-dimensional structures have been fabricated using various methods, such as laser-assisted catalyst, using carbon nano-tubes as templates, metal and metal-oxide nano sized particle catalysts (ex.
R01-2006-000-10352-0 from the Basic Research Program of the Korea Science & Engineering Foundation.
Journal of Crystal Growth 273 (2005) 375-380
Ohtani Optical Materials 27 (2005) 799-803

Ultrahigh strength steels are often regarded as difficult-to-machine materials because of their low thermal conductivity, high toughness, high hardness and strength and severe work hardening.
Krajnik: Journal of Materials Processing Technology 175 (2006) 278-284
Karabin, in: Proceedings of the Sixth European Conference on Residual Stresses, Materials Science Forum, 2002, pp. 61-68
[4] Jiang Hua, Domenico Umbrello, Rajiv Shivpuri: Journal of Materials Processing Technology 171 (2006) 180-187
M'Saoubi: International Journal of Machine Tools & Manufacture 46 (2006) 1786-1794

Manganites or manganese-based oxide materials have been known since the early 1950s [2].
The most fundamental properties of these materials are a strong correlation between its structure, transport, and magnetic properties.
Praseodymium (III, IV) Oxide (Pr6O11, 99.9 %), Strontium Carbonate (SrCO3, 99.9 %) and Manganese (IV) Oxide (MnO2, 99.9 %) were used as the starting materials.
Kurchania, Structural, magnetic and transport properties of the La0. 7Sr0. 3MnO3-ZnO nanocomposites, Journal of Magnetism and Magnetic Materials, 448 (2018) 228-235
Phuc, Magneto-transport and magnetic properties of (1–x)La0.7Ca0.3MnO3+xAl2O3 composites, Journal of Magnetism and Magnetic Materials, 323 (2011) 179-184

Composite materials with narrow width diameter are free from amorphous carbon and have more bonding sites for better functionalization [9].
Santucci, Electrical transport properties of conjugated polymer onto self-assembled aligned carbon nanotubes, Diamond and Related Materials, vol. 12 (2003) pp. 1524-1531
Zhou, Dispersion and alignment of carbon nanotubes in polymer matrix: A review, Materials Science and Engineering: R: Reports, vol. 49 (2005) pp. 89-112
Zuppiroli, Mechanical properties of carbon nanotubes, Applied Physics A: Materials Science & Processing, vol. 69 (1999) pp. 255-260
Hörhold, Improving power efficiencies in polymer--polymer blend photovoltaics, Solar Energy Materials and Solar Cells, vol. 83 (2004) pp. 263-271.

Piston Contact Stress Analysis and Simulation JIANG Fan1, a 1Zhejiang tongji vocational college of science and technology, Hangzhou 311231, China afanfan_0099@163.com Keywords: Assembly interference, Contact stress, Simulation analysis.
Simulation results indicate that contact surface average Mises stress of valve seat was about equal to yield strength of materials with interference in 0.01mm; while in conditions of interference in 0.02mm and 0.03mm; radial deformation of valve seat was obvious.
Based on analysis and considering mechanical properties of materials, unilateral interference between piston and seat would not exceed 0.01mm; when friction coefficient was defined as 0.05 and unilateral interference was set as 0.01mm, output stress would be 892.14N, which far less than hydraulic pressure arising from pull-out stress who would only be 300N.
Zhou: Journal of the China Railway Society Vol.31 (2009), p.31 [4] Y.B.Xia, C.M.
Lu: Journal of Southwest Petroleum Institute Vol.26 (2004), p.71 [5] Z.P.Guo, G.F.

With more and more new technologies and materials are constantly emerging, more dampers with higher performance are to be researched and developed.
Acknowledgements This research is supported by the Chinese National Science Foundation under Grant No. 51178473 and Introduced Talents Fund of CSUFT No. 07Y001 References [1] P.Mahmoodi, L.E.Robertson, M.Yontar, et al.
Spinelli,in: Proc. of the 8th European Conference on Earthquake Engineering(Elsevier Science Ltd ,Lisbon, 1986),p.73 [4] A.S.Pall, C.Marsh and P.Fazio: J.
, et al.: Chinese Journal of Computational Mechanics,Vol. 24(2007),p.733.
:Journal of Building Structures, Vol.31(2010),p.101. ( In Chinese) [29] H.N.Li, S.Y.Wang, G.B.Song, et al.: Journal of Sound and Vibration,Vol.269(2004),p.653 [30] R.Zhang, T.T.Soong: J.

Materials and methods Preparation of LDHs and CLDH Mg (NO3)2·6H2O and Al(NO3)3·9H2O and Fe(NO3)3·9H2O were used for preparing Mg-Al-Fe LDHs precursors by coprecipitation method with the total concentration of cation 1mol/L.
The preparation was performed with 2.0 g/L of CLDH and 100 mg/L of initial concentration of Cl- .The solution of the absorbing material was maintained at 35 ˚C in the thermostatic shake for 3h.
Kosuge: submitted to Journal of Materials Science (1995) [3] E.
Sci Vol. 261 (2003), p. 213-220 [4] S.Mandal, S.Mayadevi: submitted to Journal of Chemosphere. (2008) [5] S.Mandal, S.Mayadevi: Appl.Clay Sci Vol. 40(2008), p. 54-62 [6] Zhifeng Ren, Jing He, Chunqi Zhang: submitted to Journal of Fine chemicals (2002)（In Chinese） [7]Youfei Zhou, Minghao Sui, Li Sheng. submitted to Journal of technology of water treatment. (2012) (In Chinese)