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It is required to develop the materials with light weight and high modulus.
Introduction The study of mechanical properties of the ablative materials are very important because these materials are mainly used in aerospace vehicles that are moving with very high speed, and the higher stresses are being applied to them.
These materials required to perform effectively at temperatures ranging from -105 °C to 3500 °C [6-9].
Kakade, and Manoj Gupta, Defence Science Journal, Vol. 56 (2006) p. 309-320
[16] Composite Materials Hand Book (M.

And technology in the diagnosis of different athletes, in order to avoid the blind mode technique excellent imitation athletes and science technology improvement objective.
A technique of sports science thinking [C] the State Sports General Administration institute proceedings, 2000 [2].
Sports science, 2001, (2)
Journal of Guangzhou Sports University, 1999, (1)
[4] Small group teaching materials swimming.

The non-smooth doesn’t have this problem, but the materials and abrasion problem of this granulator should also be considered.
[7] H.Purwanto, T.Mizuochi, H.Tobo,et al.: Materials Transactions, Vol.45 (2004) No.12, p.3286-3290
[8] Q.B.Yu, J.X.Liu,　C.X.Dou, et al.: Journal of Northeastern University (Natural Science), Vol.30 (2009) No.8, p.1163-1165.
School of Materials and Metallurgy, Northeastern University, 2009.
[13] H.Purwanto, T.Akiyama: International Journal of Hydrogen Energy, Vol.31 (2006) No.4, p.491-495

Extraction and Purification of Fluorene from Wash Oil Yongsheng E Department of Biomedical and Chemical Engineering, Liaoning Institute of Science and Technology, Benxi Liaoning, 117022, China email: eys73@126.com Keywords: Fluorene; Extraction; Purification Abstract: Fluorene is a basic chemical raw material, which has wide applications.This paper introduces the current fluorene technology of extration and purification from wash oil.
Use the after-cut of wash oil as raw material, get fluorene by distillation and solvent crystallization.
The content of fluorene is higher than 97%.The total yield is 72.24%, which is higher than current domestic production levels. 1 Introduction Fluorene is a basic chemical raw material, which is mainly used for preparation of medicines, synthesizing dyes and accessory ingredients etc.
This paper will do detailed study to solvent crystallization method. 2 Experiment 2.1 raw material The after-cut of wash oil, the composition are shown in Table 1 Table 1 Composition of the after-cut Component acenaphthene diphenyleneoxide fluorene others Content [%] 15 30 38 17 2.2 The experimental equipment Efficient distillation column, φ100 × 2500, triangular spiral filler, the number of measured plate is 85.
Journal of Chemical Industry and Engineering (China). 2007,58(9):2266-2269

However, most of this kind of materials inherently share relatively poor mechanical properties while being exposed to corrosive environment, for example, surrounding circumstance with relatively high concentration of ozone gas.
On the other hand, as concluded from the experimental research of more than one century long, among metallic materials, pure aluminum (Al) not only has low mass density, high thermal conducting property, but also shows excellent resistance to corrosion under various corrosive situations [3-5].
Here this kind of materials is directly adopted to play the role of pure aluminum.
Acknowledgements Corresponding author, Liu Guoning, is thankful for the financial support of Post Doctoral Foundation of ZZU and the Foundation of the Bureau of Science and Technology of Zhengzhou City.
Sutton: an aluminum statue of 1893: Gilbert’s Eros, Journal of Institute of Metals, vol.60 (1938) 67-74

Acknowledgements The authors gratefully acknowledge the financial supports of the Natural Science Foundations of China through its Research Program (No. 51378409).
Multi-scale modeling and damage analyses of large civil structure—multi-scale mechanics from material to structure.
Journal of Southeast University (Natural Science Edition),2007,32(7): 252-260.
Journal of Huazhong University of Science and Technology.
(Urban Science Edition) ,2008,25(4): 76-80 [8] M .Nakashima, K .Inoue, M.Tada.

Chaos Artificial Fish Swarm Algorithm gravity dam material parameter [J].
The principle of ant colony algorithm and its application [M] Beijing: Science Press,2005:11-12
Image segmentation based on Fisher criterion function method[J].Journal of Scientific Instrument, 2010, 24(6): 57-58
Southwest China Normal University (Natural Science), 2010,23 (6): 58-59
Journal of Zhejiang University (Science Edition), 2006,33 (1): 32-33.

Modeling and Numerical Calculation of Heat Transfer During Magnetic Field Quenching Li Zhenhua 1,a Liu Meihong 2,b Chen Junruo3,c ZhouRong4,d 1,3,4 Kunming University of Science & Technology, Kunming, 650093, China 2 East China University of Science & Technology, Shanghai, 200237, China a,d lzhkust@sohu.com, b,cliumeihong6199@sohu.com Keywords: Temperature field, Numerical Simulation, Magnetic Field Quenching Abstract.
Journal of Iron and Steel Research, Vol. 12, 2000(3): 31~35.
Metal Science and Heat Treatment, Vol. 18, 1976(2): 6~8
International Journal of Solids and Structures, Vol.41, 2004: 1139-1155
(Science Press, China 1987)

Define parameters of the material properties, the density of steel is defined as 8030kg/m3; heat capacity (cp) is defined as 502.48j / (kg * k); thermal conductivity is defined as 16.27w / (m * k).
Acknowledgement This project supported by Hei Long Jiang Postdoctoral Foundation (LBH-Z10006), and Science and Technology Project of Qiqihar Foundation (GYGG2010-03-2).
Reference [1]Fu Yanli, Ma Xizhi, Zhu Jun: Study on the three-dimensional temperature field of circular journal bearing. mechanical science and technology, 9(2002), p.711-713 [2]Manring, Noah D, Johnson Robert E: Pressure measurements for translating hydrostatic thrust bearings.
International journal of fluid power, 6(2005), p.19-24
[4] Chen Yan-sheng: the theory and design of hydrostatic bearing (National Defence Industry Press, Beijing, 1980) [5] Zhu Hong-jun, Lin Yuanhua: FLUENT Practical Course of fluid analysis and simulation (Posts & Telecom Press, Beijing, 2010) [6]Zhang Yanqin: Ph.D Thesis (Department of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin, 2009)

Introduction Cultivated land is the material basis for human survival and development, and an important source of social wealth.
Acknowledgments This work was financially supported by the Suzhou University Natural Science Project (2012yyb01) and the Anhui Universities Social sciences Program（SK2013B511）.
Journal of soil, 2006,43(4):662-672
Resources Science, 2006, 28(5):50~56
Different analysis on dynamic change of cultivated land and its driving forces in different economic regions of Chongqing[J].Journal of Soil and Water Conservation, 2005, 19(2):171~174.