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Optimum determination of partial transmission ratios of coupled planetary gearboxes For the low-speed row of the coupled planetary gearbox (see Figure 1), the design equation for the pitting resistance can be written as follows [8]: (1) In the above equations, , , are coefficients which consider the effects of the gear material, contact surface shape, and contact ratio of the first gear unit when calculate the pitting resistance; is the torque of the driving shaft (Nm), is allowable contact stresses of the low-speed row of the planetary gearbox.
[9] Vu Ngoc Pi, Vu Quy Dac, “Optimal calculation of total transmission ratio of worm- helical gear reducers” (in Vietnamese), Journal of Science and Technology - Thai Nguyen University, Vol. 1 No. 4 (36) 2005, pp. 70-73.

Zenkour [5] presented thermoelastic bending analysis for a simply supported ,rectangular, functionally graded material plate resting on a two-parameter (Pasternak model) elastic foundation using the refined sinusoidal shear deformation plate theory.
International Journal of Mechanical Sciences Vol. 51 (2009), p. 869 [6] A.H.

The layout of project was shown in Fig.1.The water depth of revetment was from 3m to 13m and the slope of sea bottom was steep as 1:5, with rocky bottom material.
Acknowledgements This work was financially supported by Science Project Foundation of Ministry of Transport (2013 328 224 070).
Journal of Waterway and Harbor, Vol.35 (1),(2014)

Raw material used in the tensile experiment is AZ31 sheet obtained through hot rolling.
Reier, et al.: Proceeding of the Second International Conference on Magnesium Science & Technology, Dead Sea, Israel, (2000), p19 [2] H.
Journal of Plasticity.

(9) Numerical Results and Discussions As a numerical example, we suppose the districts were identical in material properties (,, ), the amplititude of incident wave , and ,.
Acknowledgement This study was supported by National Natural Science Foundation of China (10972064) and Key Laboratory Foundation of Earthquake Engineering and Engineering Vibration, China Earthquake Administration (2009A06).
Chen: Journal of Harbin Institute of Technology. 43(sup.1) (2011), p. 6-11.

Bailey et al. [5] defined adsorbent as inexpensive if it requires little processing, abundant in nature, and/or a by-product or waste material from another industry.
[2] Mo, S.C., Choi, D.S, and Robinson, J.W., A study of the uptake by duckweed of aluminium, copper and lead from aqueous solution, Journal of Environment Science and health, vol. 23. .no. 2, pp 139-156, 1998

Sustainability Assessment of Residence Project in China Qilan Zhou Chongqing University of Science & Technology, University City, Chongqing, China zhouqilancq@gmail.com Key words: project, sustainability, environment construction.
Fuller was concerned about how to combine human development goal, needs, globe resource and science technology; came up with the full use limit of material resources in building design idea.
Sustainable construction is sustainability practice in building industry, the main aim of which is to participate in production, development, plan, design, construction and maintenance departments; include building materials manufacturer and supplier.
Journal of Liaoning Technical University (2000) [4] Cooper, I 'Inadequate grounds for a 'design-led' approach to urban design'.

Analysis of Elastic Motion Stability of Flexible Manipulator Arm Based on Roth Criterion of Control System Guangrui Liu 1,a,* , Lanfen Niu 2,b , Xin Tian 3,c 1, 3：Mechanical Engineering School of Zhengzhou university Zhengzhou City Science Road No.100 450001, China 2：Mathematics and Statistics School of Zhengzhou university Zhengzhou city science road No.100 450001, china a: lgrui2006@163.com ; b: niulanfen@zzu.edu.cn ; c: 1828802563@qq.com Keywords: Roth criterion, flexible manipulator arm, elastic motion stability, dynamic maximum allowable payload,drive joint rotational inertia Abstract .
x w x w(x,t) Fig.1:A schematic diagram of a single-link flexible manipulator Elastic deformation w(x,t) is applied to Euler-Bernouli Free vibration differential equation: (1) E is Elastic modulus of flexible manipulator material, I is moment of inertia of section of Manipulators;Material density of flexible manipulator, A is Sectional area of the manipulators.Motion of elastic deformation satisfies the following boundary conditions: In the flexible manipulator linked with Chuck ,the lateral vibration displacement is zero, and the lateral vibration velocity is also 0
According to Roth criterion , structure the Roth table , get the necessary and sufficient conditions of the stability of input and output： （1）； （2）； （3） Substituting the expression of and arrange, we can get the necessary and sufficient conditions which maintain the stability of elastic motion of flexible manipulator： (12) Numerical calculation The units and value of known physical：In this article ,the parameters of the flexible manipulator which used for experimental and computational is：Material :45 steel, Full length：1009 mm, Blessing length：100 mm, Overhang：909 mm, Width：48.5 mm, Thickness：3.8 mm, Density：7.8*10^3 kg/m^3, Young's modulus：2.1*10^11 The analysis of results (1) When the moment of inertia of the drive joints (including the moment of inertia of the motor rotor, the chuck and the flexible manipulator itself,) is constant , the end position of the elastic deformation to the step response of the joint driving torque.
Journal of Shandong Engineering Academy . 1998(3):6-11

The Influence of Longitudinal Magnetic Field on DCEN MAG Welding Xuming Wang 1, a, Wen Zhang 1,b and Ying Wang 1,c 1 North China Institute of Science and Technology, 065201,China awangxuming@ncist.edu.cn, bzhangwen@ncist.edu.cn, cvway1222@sina.com Keywords: Longitudinal magnetic field, DCEN MAG welding, Wire melting coefficient, Welding stability.
(2) The stability of MIG/MAG arc is relatively weak compared with non-consumable gas arc shielded welding, for which includes many factors: welding parameters, shielded gas component, welding wire Material and diameter, wire extension, wire melting, Droplet Transfer etc.
When wire is connected to the negative pole, wire is Cold Cathode Materials, and cathode drop is much higher than anode.
[8] WANG Jun, WANG Hui xia, LIANG Zhi min:Experimental study on high performance MAG welding process controlled by longitudinal magnetic field.Journal of Hebei University of Science and Technology.2010,31(3): 205-208.

School of Materials Science and Engineering, University of Florida, USA 3.
Calcium phosphate (CaP) based biomaterials play an important role in clinical application especially as bone substitute material 1 .
Giammara; Science, 242(1988), p885-892
Alves; Journal of physics and chemistry of solids, 62(2001), p1251-1255.