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The maximum shear stress of thin-walled rings is twice the average shear stress of it which is shown by material mechanics.
[7] Xie Qiang, Wang Xiong, Zhang Jianhua, Xiang peng.(2012).Longitudinal Stress Analysis of Pipeline Buried in Two Different Form of Landslide, Chinese Journal of Underground Space and Engineering,8(3):505-510
[11] Zhang Weifu, Gao Jianzhong, Wang Changan.(2011).Performance Analysis of Home-made X70 SAWL Pipes Used for Sichuan-East Natural Gas Pipeline Project, Technical Communication,40(2):29-33 [12] Li Youlv, Xu Wenbin, Chen Huayan, Zeng Xiangguo,Xu Taolong.(2012).Reliability Analysis of Buried High Pressure Gas Pipeline under the Impact of Rock Fall, Journal of Safety Science and Technology,8(4):29-33.

The art and science of RMT development are still at their development stage.
The cost of an interface system should include the machining cost and the material cost of its joint mechanism, and it should be as low as possible while the requirement of location repeatability is met.
Chen, Journal of Construction Engineering and Management 2010, 136, 187
Wei, International Journal of Operations and Quantitative Management 1999, 59

Competition can systematically train students the designing, developing and adjusting & testing abilities, promote the subject selecting, problem analyzing, material collecting and arranging abilities.
Journal of Higher Education Management, 2009, 3(3), p. 90-92
Journal of Liaoning Teachers College(Natural Science Edition), 2007, 9(2), p. 50, 74

Table 1 Types of sections Section Material of main chord Structure of main chord[mm] Weight[] Standard section Q235B Square tube 135×135×10 7480 Reinforced section Q235B Square tube 135×135×12 8370 The section is made up of 2 roots diagonal poles, 4 roots main chords, 8 roots tilted belly poles, 12 roots level web members and the connection sleeves up and down etc.
Acknowledgements This research project was financially supported by Liaoning Province Education Department Type A Program (L2010455) and Liaoning Province Science and Technology Support Program (2010402010).
Li: Journal of Shenyang Jianzhu University, Vol. 26 (2010) No.5, p.986.
Li: Journal of Shenyang Jianzhu University, Vol. 21 (2005) No.4, p.399.

Convective Heat Transfer Characteristics of Laminar Flow in Sinusoidal Corrugated Tube Zhengming Tong1, Kai Zhua, Yonghai Hu, Li Ye, Jialei Lu and Chao Li 1Institute of Process Equipment and Control, University of Shanghai for Science and Technology, Shanghai, 200090, China asduo-zk@163.com Keywords: Sine camber; In tube; Laminar; Heat transfer; Field synergy Abstract.
Heat transfer increment is generally crucial for some reasons, such as saving energy and material resources.
Sparrow: Journal of Heat Transfer, Vol.106(1984), p.55-63 [6] R.S.
Amano: Transactions of the ASME Journal of Heat Transfer, Vol.107(1985), p.564-569 [7] Giampietro Fabbri: Int.J. of Heat Transfer, Vol.43(2000), p.4299-4310 [8] Patankar S V: Numerical heat transfer and fluid flow (McGraw-Hill, New York 1980)

The motion equations of solid-liquid two-phase flow in the Eulerian coordinate system are as follows[10]: Liquid phase continuity equation: (1.1) Solid phase continuity equation: (1.2) Liquid phase momentum equation: (1.3) Solid phase momentum equation: (1.4) In the above-listed equations, Ui and Vi are respectively the velocity components of the liquid and solid phase, ρ the material density of phases, ν the kinematic viscosity coefficient, P the gravity acceleration component, g the component of gravity acceleration, and xi the coordinate component.
Journal of Tsinghua University (Science and Technology), China, 2001, p 93-96
Chinese Journal of Mechanical Engineering (English Edition), v 17, n 4, p 623-627, December 2004

Seen from fig.4a, untreated surface is smooth, in fig.4b, after treatment by APGD the surface was no longer smooth, there was coarse etching effect and the flake material adhesion to surface.
Tuchida: Journal of Polymer Science Vol. 42 (2004), p. 3727 [2] G.
Kogoma,: Journal of the Vacuum Society of Japan Vol. 51 (2008), p.2 [8] Ultrasonic-nozzle Product Information, Sono-tek, U.S.A., (1996)

Optimization of Conditions of Preparation of YAG Nanopowders for Sintering of Translucent Ceramics Tadeusz Chudoba a, Mathieu Teyssier b and Witold Łojkowski c Institute of High Pressure Physics (UNIPRESS) of the Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland e-mail: a chudoba@unipress.waw.pl, b mteyssier@hotmail.fr , c wl@unipress.waw.pl Keywords: YAG, ZETA potential, nanopowder, HPLS Abstract.
The results of the grain size measurements of the powders obtained by grinding operations depend significantly on parameters such as the dispersant or gas atmosphere during milling, the grinding material media and the intensity of crushing [6], as these variables can have an influence on the particle surfaces.
Lei Wen, Xudong Sun, Zhimeng Xiu, Shaowei Chen, Chi-Tay Tsai, Synthesis of nanocrystalline yttria powder and fabrication of transparent YAG ceramics, Journal of the European Ceramic Society 24 (2004) 2681-2688 [4].
Masakuni Ozawa , Masatomo Hattori, Ultrasonic vibration potential and point of zero charge of some rare earth oxides in water, Journal of Alloys and Compounds 408-412 (2006) 560-562 [6].

Those containers that were damaged in the fall from the ship released material in the ocean, which was drifted by currents and winds [12].
Brazilian Journal of Oceanography, 2016, vol. 64, núm. 3, pp. 277-294
Science of the Total Environment, [7] CARRÈRE, L.; LYARD, F.; CANCET, M.; GUILLOT, A.; ROBLOUT, L. (2012).
Journal of Eng.

The data in this queue in and before 2006 are equal to Expenditure on Culture,Education, Science,and Public Health of Government Expenditure deducting Government Expenditure for Scientific and Research.
The relevant statistical material data are collected and calculated from “China Statistical Yearbook” over the years, which are list in table 2.
The expenditure for Education refers to the national government expenditure used for education as well as the expenditure for science and technology.
Portuguese Economic Journal (2004)3,p.205-225
Independent innovation capability evulation and upgrade research of large and medium sized enterprises in western part[J], Journal of Industrial Techonological Economics,2007(8), p.58-62 [7] Jun Zhi, Zhonghui Wang, Independent innovation capability survey thiory and evulation index system design[J].