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And many reactive materials have been developed and used in PRB for the removal of contaminants.
And high pure graphite electrode materials were used to avoid the entry of new pollutants. 1.2 Materials and reagents The electrolysis tank was filled by the original soil sample which was eliminated plant rhizome, thick chipping, break stone and etc., and was fully aired, crushed and dried at 105℃.
Journal of Agro-Environment Science, vol.26(2007), p. 443-448, (in Chinese)
Tech, 32(1998), p. 2308-2316 [14] Hu Hongtao, Zhang Xiaoliang, Liu Yunlong: Journal of Agro-Environment Science, vol. 25(2006), p. 661-664 (in Chinese)
[15] Alam M G M, Tokunaga S, Maekawa T: Chemosphere, 43(2001), p. 1035-1041 [16] Tampouris S, Papassiopi N I, Paspaliaris I: Journal of Hazardous Materials, 84(2001), p. 297-319

The Gas Sensitvity Character of WO3 Nanosized Material HUANG Shi-zhen1,a , LIN Wei 1,b ，CHEN Wen-zhe1,c 1 Department of Electronic science Applied Physics, Fuzhou University,Fuzhou 350002,China a email: hs501@fzu.edu.cn b email: mqks@fzu.edu.cn cemail: cwz@fzu.edu.cn Key words: Nanosized material; WO3; NO2 Abstract By thermal decomposition, WO3 nanosized material was prepared as sensitive material and doped SiO2 nanosized material has been prepared using Sol-Gel process.
WO3 is a material developed in recent years.
Figure 1(a) and figure 1(b) are SEM pictures of microstructure of materials doped with SiO2 and pure WO3 respectively.
In the sinter temperature of 500-600℃，surface activity of grains of the sensing material is strong and BET of the material is large, result in high sensitivity to NO2 of the material.
References [1] Xiu sheng Wang, Liang ying Zhang, Xi Yao: Functional Material, Vol.29 (1998), p.276-277 [2] Jun Bao, Guo xing Xiong, Jin hua Gu: Film Science and Technology, Vol.18(1998), p.42-44 [3] Yu Hua-liang, Huang Shi-zhen, Lin Wei, Chen: Chinese Journal of Sensor and actuators, Vol.18 (2005), p.325-328 − − − − − − + →++ →+ ads ads ads ads O NOeONO NOeNO 2)(2 )( 2 22 2 2 Figure 2：Curve of response-recovery of the element

Consequently, during operation, the materials of individual components degrade.
Grant, Aerospace Materials, IOP Publishing Ltd., Bristol (2001)
Progress in Materials Science, 5 (2007) 1091–1173
Li., Influence of Dealloying Solution on the Microstructure of Monolithic Nanoporous Copper through Chemical Dealloying of Al 30 at.% Cu Alloy, International Journal of Electrochemical Science, 7 (2014)7993-8006
Botef, Cold gas dynamic spraying of WC-Ni cemented carbide coatings, at 10th International Conference on the Science of Hard Materials, Mexico, (2014).

Thermal storage and release properties of aluminum foam - paraffin composite phase change materials LUO Xiaoxu1,a, *ZUO Xiaoqing2,b, ZHAO Mingwei2,c 1Faculty of Foreign Languages & Cultures, Kunming University of Science and Technology, Kunming 650093, P.R.China 2School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, P.R.China alxxlxx01@yahoo.com, bzxqdzhhm@hotmail.com, czhaoming860515@163.com (*corresponding author) Keywords: aluminum foam; paraffin; APCPCM; thermal storage and release properties Abstract.
Based on the thermal storage capability of paraffin and the thermal conductivity of aluminum foam, attempts [5-8] of getting new materials, such as Aluminum foam–Paraffin Composite Phase Change Materials (APCPCMs) with good thermal properties by filling paraffin into the aluminum foam, have been reported recently.
Zhang, J.Z.Yu: Journal of Refrigeration Vol.28(2007), p.13-17 [7] K.
Shaikh: JOURNAL of Applied Physics Vol.102(2007), p.1-6 [8] T.
Mortensen: Materials Science and Engineering A （462）(2007), p.68-75 [11] JAGJIWANRAM, R.

The measurement of the pH of various materials is provided.
Table 1: Used materials.
Students are informed about used materials.
Kozma, The material features of multiple representations and their cognitive and social affordances for science understanding, Learning and Instruction. 2 (2003) 205-226.
Information on: http://www.sciencedirect.com/science/article/pii/S095947520200021X?

Effect of Technological Parameters on Preparation of Mg-based Foam Materials Hongjie Luo1, a, Li Zhang1, b, Zhengguo Xu2, c and Yuansheng Yang2,d 1School of Materials and Metallurgy, Northeastern University, Shenyang(110819), China 2Institute of Metal Research, Chinese Academy of Sciences, Shenyang(110016), China aluohj@smm.neu.edu.cn, blizgangy@126.com, czgxu@imr.ac.cn, dysyang@imr.ac.cn Keywords: Magnesium alloy, Silicon carbide, Magnesium carbonate, Foaming in melt, Mg-based foam materials.
Schematic illustration for the casting process of magnesium foam Procedure Raw Materials.
Asahina, Processing of an open-cellular AZ91 magnesium alloy with a low density of 0.05 g/cm3, Journal of Materials Science Letters. 18 (1999) 1477-1480
Nakajima, Fabrication, properties and application of porous metals with directional pores, Progress in Materials Science. 52 (2007) 1091-1173
Zhang, Evaluation of porosity in lotus-type porous magnesium fabricated by metal/gas eutectic unidirectional solidification, Materials Science and Engineering A. 402 (2005) 47-54

The Analysis for Materials Removal Mechanism of Ultrasonic Auxiliary Gear Honing L.
Acknowledgment This project is supported by National Natural Science Foundation of China (No. 50475158) and Specialized Research Fund for the Doctoral Program of Higher Education.
Wise: Review on Ultrasonic Machining, International Journal of Machine Tools & Manufacture, Vol.38 (1998), p. 239-255
Journal of Materials Processing Technology.
Xu: Study on New Manufacturing Process of Gear-Honing-Tool Used for Hardened Gear, Key Engineering Materials, Vols. 259-260 (2004), p. 10-13 [4] Ya Gang: Analysis of the rotary ultrasonic machining mechanism, Journal of Materials Processing Technology, Vol.129 (2002)

Design and Analysis of a Micro-motion Platform Based on Flexible Mechanism Yuemin Yu College of Science ,Heilongjiang University of Science and Technology,Harbin, 150022,China yuym2012@126.com Keywords: Micro-motion platform , Smart materials, Piezoelectric ceramic stack Abstract.
Piezoelectric materials is a kind of the most common smart materials whose geometric shape can be related to an energy input in the form of electric field.
In the application of active materials to electromechanical energy conversion, electrical energy may be input to the material and the resulting deformation of the material can be used to move a load.
Journal of Tianjin Vocational Technical Teachers' college, 41 (1), 1-5(2002) [3] Yuemin Yu, Xiansheng Ji Design and analysis of a micro-gripper based on smart materials [J].
Applied Mechanics and Materials, Vols. 220-223:984-987 (2012) [4] Yu Yuemin, Leng Jinsong.

In the last twenty years the cavitation erosion resistance of various welded materials was subject of extensive studies.
The multitude of materials used for the fabrication of hydraulic equipment and the variety of the operating conditions in hydropower units require adapted solutions.
The use of a volume parameter, such as the mean depth of erosion, is justified when it is necessary to compare two materials with different densities.
Fusan, Correlation of cavitation erosion resistance and mechanical properties of some engineering steels, Journal of Material Science, vol. 41, 2006, pp. 2151–2153
Structure and Constitution, Journal of Phase Equilibria and Diffusion, Vol. 29, No. 6, 2008, pp. 500-508.

Acknowledgements This work is supported by the National Natural Science Foundation of China (Grant No.60508001).
Matsunaga: International Journal of the Japan Society for Precision Engineering, Vol. 27(10)(1993), pp.1713-1717
Feng: Key Engineering Materials, Vol. 257-258(2004), pp.153-158
Cheng: International Journal of Machine Tools & Manufacture, Vol. 45(9)(2005), pp.1085-1094
Preston: Journal Society of Glass Technology, Vol. 11 (1927), pp. 124-127