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Journal of Inorganic Materials, 2005, 20(2): 310-316.
Journal of Inorganic materials, 2000, 15(2): 347-355.In Chinese [9] Hu S C, Zhou Z W, Chu L S.
Journal of Shaanxi Normal University (Natural Science Edition), 2013, 41(2):39-43.
Journal of Functional Materials, 2011, 42(B02): 69-72.In Chinese [21] Lei H F, Wang P, Zhang Y M, etc.
MATERIALS SCIENCE & TECHNOLOGY, 2009, 17(4): 457-461.

The regularity of the change of stress and displacement with the change of material parameters under nine kinds of materials mix proportion is obtained and the optimum analysis result of stress and displacement for the seepage prevention wall is given in this paper.
Meanwhile, the contact between two materials and the initial ground stress of dam foundation is considered in whole solution process, and the true behaviors are well simulated by this model.
Journal of Hydraulic Engineering, 1995(8):21-27 In Chinese [2] Xingwang Dou, Yixing Lin, et al.
Advances in Science and Technology of Water Resources, 2000, Vol 20(6):19-22 In Chinese [3] Chunlou Ji, Songyou Xia, et al.
Journal of He Hai University,1995,Vol 23(5):74-80 In Chinese [4] Peng Li, et al.

However, CFRP is a kind of hard machining materials and conventional tungsten carbide drills always experience severe tool wear, and thus short lifetime in the CFRP drilling process.
Tsao: Journal of Materials Processing Technology, Vol. 140 (2003), p.335 [2] A.M.
Faria, et al: Journal of Materials Processing Technology, Vol. 186(2007), p.1 [3] J.P.
Sun, et al.: Journal of Materials Processing Technology, Vol. 129 (2002), p.81 [6] F.H.
Zhang, et al.: Journal of Materials Processing Technology, Vol.129 (2002), p.435 [7] B.

Han, Magnesium - Science, Technology and Applications, Materials Science Forum W.
Yu, Materials Science and Engineering: A, vol. 528, no. 3, pp. 961-966
Wu et al., Journal of Materials Science, vol. 45, no. 15, pp. 4084-4087, Aug
Liu et al., Magnesium - Science, Technology and Applications, Materials Science Forum W.
Zhang, Journal of Materials Science, vol. 44, no. 15, pp. 4132-4139, Aug, 2009

Introduction Ultralight metal materials with a lot of holes have multi-functional properties such as lightweight（ρ<1）, high specific strength, damping, anti-noise, heat transfer and so on.
The property of absorbed energy was studied usually in the plastically deforming area in these materials [7, 9], but few report was in the elastic deforming area.
These lightweight materials have high damping properties because of non-uniformity between air and metal framework.
Damping properties of these materials had been studied in different frequency range in the literatures[10-11], but a few results in ultrasonic frequency range.
Lu, Science in China(B), MIT, Vol.46, No.6, 2003:521-532 [5] Yang Donghui, He Deping, Science in China (B), 2001,44(4):411 [6] Zhen Mingjun, He Deping, Dai Ge, Science in China (B), 2002,45 (18): 598 [7] Zou Yi, He Deping, Jiang Jiaqiao, Science in China ( B), 2004, 47(5):407 [8] Wu Zhaojin, He Deping, Chinese Journal of Applied Sciences, 2001,19(4):357 [9] Zhen Mingjun, He Deping, Chinese Journal of Material Research, 2002 [10] He Deping, Yu Xingquan, Chinese Journal of Material Research, 1997,11(1):101 [11] Liu Changsong, Han Fusheng, Zhu Zhengang, ACTA PHYSCIA SINICA, 1997, 46(8): 1585

Input and output materials are recorded in detail every day from Apile to October, 2009.
Conservation of matter Establish material balance equation, calculate the amount of waste by mathematical model.
The schematic diagram of cage culture material balance is shown in Fig.2.
Acknowledgements This work was financially supported by The National 11th Five-Year Major Science and Technology Projects on Control and Prevent Water Pollution (Code 2008ZX07209-007).
References [1] W.Bian, X.B.Hu, and Z.F.Tian: Journal of Hebei University (Natural Science Edition).Vol.31 (2011), P.80 (In Chinese) [2] Y.Z.Zhang, H.S.Hong, and N.W.Chen: Journal of Xiamen University (Natural Science Edition).Vol.42 (2003), P.223 (In Chinese) [3] J.Q.Wang, Y.M.Sun, and J.Z.Qian: Journal of Environmental Science.

Experiments Experimental Materials.
Hao: Journal of Inorganic Materials Vol.20(2005), p. 1189(In Chinese) [5] Y.
Jose: Journal of Collid and Inerface Science (2004), p 1 [9] B.
Cui: Rare Metal Materials and Engineering Vol.38(2009), p. 468(In Chinese) [10] S.
Li: Journal of Inorganic Materials Vol.12(1997), p. 774(In Chinese) [12] D.

The Surface Characteristics and Friction Properties of PTFE Yarn Jinquan Wang1,a, Lijun Qu1,2,b*, Xiaoqing Guo1,2,c, Yaning Sun1, 1 College of Textile and Clothing, Qingdao University, Qingdao 266071, P.R.C 2 Laboratory of New Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, Qingdao 266071, P.R.C ajinquanwang@126.com, b*lijunqu@126.com, cgxiaoqing@163.com Keywords: PTFE yarn, friction property, running speed, initial tension, guide material Abstract.
In addition, the porous structure of PTFE yarn surface could change the absorption, reflection, refraction and scattering, the fabric not only has good gloss, but also permeation is high for the millimeter wave, reflectivity is also high for the solar energy and absorption is little[2,3], so it is the preferred building materials.
Y2008B42 from Basic Research Program of Shandong Provincial Natural Science Foundation.
Journal of Materials Processing Technology.
Journal of Zhejiang Institute of Silk.

All the company's production is made-to-order, to a specific design and using specified materials agreed with customers.
The materials flow through to each stage of work station.
This research therefore aims to improve the management of raw materials of the company case study in the form of operation research.
Productivity is a ratio of production output to what is required to produce it such as inputs of capital, labor, land, energy, materials, etc.
Journal of Applied Sciences Research, vol. 3-12 (2007), p.1689-1695

In comparison with most widely used aluminum alloys, magnesium alloy is one of the lightest commercialized metallic materials for structural applications.
Table 1 shows the comparison of the mode frequency data of the wheels made in two kinds of materials.
Materials Science Forum.Vol.419(2003):67272
Understanding the Influence of Pressure and Radial Loads on Stress and Displacement Response of a Rotating Body:The AutomobileWheel.International Journal of Rotating Machinery.Vol.60193(2006)：1-8 [5] J.Stearns,T.S.Srivatsan,A.Prakash,P.C.Lam.Modeling the mechanical response of an aluminum alloy automotive rim.Materials Science and Engineering.2004:262-268 [6] Wang Lihui.
Journal of Mechanical Strength.