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ZG230-450 was used as matrix material and was smelted in a medium-frequency induction furnace.
High-chromium cast iron is a good wear resistant material.
The surface wear resistance of materials can be improved largely.
Acknowledgements This work was financially supported by the Key Project of Science and Technology Department of Henan Province of China (102102310268).
Journal o f Heat Trasfer, Vol.118(1996), p.173- 180

The complexity of the problem and the necessity to account for diversified features of rock cutting and materials involved has forced scientists to apply numerical methods and computing systems.
DEM is a widely used and effective method to solve various engineering problems in the mechanics of bulk materials and rocks.
Chemical Engineering Science.
International Journal of Rock Mechanics and Mining Sciences.

It is another nitrogen pollution source of groundwater. 2.The Non-point Source of Pollution When it comes to the rural area, the non-point pollution source is largely due to the widely-used organic materials, such as chemical fertilizers and pesticides in agricultural production.
These materials are permeating underground through irrigation and precipitation and cause the rise of nitrogen content in groundwater.
（4）Improve the Fertilization in Ecological Agriculture The Major Ninth Five-Year Project of Chinese Academy of Science argues about the slow effective mechanism and environmental effect of slow-release ammonium bicarbonate.
Acknowledgements Funds provided: Science and Technology Bureau of Hengyang plan project(2012KS18) References [1] Renshou Fu,Yi Qian.Christine A Shoemaker.
European Journal of Epidemiology, 2001,17:443-447 [6] Li Guo-xue,Sun Ying, Ding Xue-mei,Shen Qi_rong.Effects of Composting Organic Compound Fertilizers on Vegetables and Soil Environment [J].

The wastewater produced by the textile industries has been known to have strong color and a high concentration of dissolved solids (organic and inorganic materials) [1].
Experimental Materials.
Acknowledgements This work is supported by the Science and Technology Plan Projects of Changzhou (CZ20090005) and the Priority Academic Program Development of Jiangsu Higher Education Institutions.
Lovitt: Journal of membrane science (2007), p. 4-28

Its function of market town has weakened gradually, and the cultural precipitation, which was embedded in its building features, street pattern, ruins & old residence, nation feature and folk custom, was the civilization linkage of material heritage and immaterial heritage, static heritage and dynamic heritage [1], and could be called as the comprehensive living fossil of Chinese historical and cultural veins [2].
Therefore, in the aftermath renovation, the stories of the construction within the ancient town shall not exceed 2, and the outer material of the buildings shall be wooden with little amount of bricks and whitewashed wall.
The second-phase development (construction of garden scenic belt) shall be emphasized to channelize the stream of people, enrich the material culture life and perfect all the functions.
Conclusions The traditional market town does not only contain the exterior material formation, but also implicate the profound historical cultural tradition and realistic living style.
[5] HU Jiajing, SHEN Rongtai: Journal of Chongqing University of Science and Technology(Social Sciences Edition).

Numerical Simulation and Measurement of Velocity Distribution in a Gas Nitriding Furnace Jing Wang1, a, Nailu Chen2, b and Xuexiong Shan3, c 1 School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, China 2 School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, China 3 School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200030, China a j_wang@sjtu.edu.cn, bnlchen@sjtu.edu.cn, cshanxx@sh163e.sta.net.cn Keywords: gas nitriding furnace, velocity distribution, computational fluid dynamics, measurement, uniformity Abstract.
[3] Stopford, Philip J.: Applied Mathematical Modelling Vol 26 (2002), p351 [4] Tominaga, Y., Murakami, S., Mochida, A.: Journal of Wind Engineering and Industrial Aerodynamics Vol 67-68(1997), p 827 [5] P F Stratton: 14th of Congress of International Federation for Heat Treatment and Surface Engineering, shanghai 2004, p 729 [6] Sala, J.

Introduction In recent years, Ni3Al intermetallic compounds is considered an attractive material for high-temperature applications due to its attractive characteristics of high strength at elevated temperature, low density, good corrosion resistance and oxidation resistance [1-3].
Both of the 2 samples have fine grains which distribute dispersedly, except for very little microcrystal grains that is possible the residual particles of raw material metal and we can hardly find any holes from the 2 images.
Acknowledgements This work was supported by the Natural Science Foundation of Hubei Province (No.2009CDB300), and the Fundamental Research Funds for the Central Universities of China (No. 5082001).
Zhong, The MA mechanism study o f Ni-Al intermetallics compounds, Journal of Jilin Normal University (Natural Science Edition) 1 (2007) 10-11
Yan, T. yang, H. zhang, Synthesis of Pure NiAl Powder by Mechanical Alloying, Metal materials and metallurgy engineering 4 (2008) 3-5

A Method of Reliability Sensitivity Analysis for Gear Drive System Chang Li1, a, Guangbing Zhao1, b and Xing Han1, c 1School of Mechanical Engineering, University of Science and Technology Liaoning, Anshan, 114051, China alichang2323-23@163.com, bljfc1888@163.com, chanxing_1982@yahoo.com.cn Keywords: Gear drive system; display finite element method; response surface methods; reliability sensitivity Abstract.
Influenced by production, it exists some randomness at the hands of physical dimension, mismachining tolerance, material characteristics, service load and act, which will cause a influence to the reliability of gear meshing drive.
The material of bearing’s inner race, bearings outer ring and balls is 40Cr, the Poisson's ratio is 0.277, the elastic ratio is 2.11×105MPa; the material of cage is yellow brass, the density is 8454kg/m3, the elastic ratio is 1.06×105MPa and the Poisson's ratio is 0.324; the material of shaft, shaft key, box body, bull gear and pinion-gear is steel 45, the Poisson's ratio is 0.269 and the elastic ratio is 2.09×105MPa.
Beijing:Science and Technology Publishing House, 2009: 62-66
The dynamic response of elastic bodies in rolling contact to random roughness of their surfaces[J].Journal of Sound and Vibration, 1972, 22(3):323-342.

Comparison of microstructure and properties of Ni-based overlay deposit under longitudinal magnetic field and transverse magnetic field LIU Zhengjun1, a, LIU Duo1,2,b , LIU Chang-jun1,c 1 School of Material Science and Engineering Shenyang University of Technology, Shenyang, 110870,china 2.Shenyang Institute of Special Equipment Inspection & Research, Shenyang, 110035,china aemail:liuzhengjun1962@163.com, bemail:liuduo2003@126.com, cemail:liucj@163.com Key words: plasma arc sufacing; magnetic field style ; Ni-based alloy; microstructure and properties Abstract.
Experimental Material and Procedures The experiment makes use of type LU500-4 plasma arc surfacing equipment to overlay nickel-base self-fluxing alloy Ni60 on the surface of low carbon steel 20g.
This situation has direct relation with the chemical composition of materials.
Acknowledgements This work was financially supported by the Liaoning Natural Science Foundation (20042025), Shenyang Municipal Arranged (20082647-2) and Liaoning Leading Education Department Project (2008S164).
References [1] Qinglong Yuan, Xudong Feng.Journal of Henan Polytechnic University, 2010, 29(2):245-248(In chinese) [2] Qing yu Hou, Jia sheng Gao.

The material used for XPS investigations was 10 µm thick epilayer n-type 4HSiC doped 10 16, grown on n + - doped 4H-SiC Si-face substrates (wafers purchased from Cree).
Lee: Journal of the Electrochemical Society, Vol. 149 (3) (2002), p.
Mawby: Materials Science Forum Vols. 338-342 (2000), p.1025 (ICSCRM 1999)
Radomson: Material Science Forum Vol. 264-268 (1998), p. 799.