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Acknowledgements This work was financially supported by the National Natural Science Foundation of China (50874063), and the construct program of the key discipline in hunan province.
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Acknowledgement This research was financially supported by the National Science and Technology Major Project of the Ministry of Science and Technology of China. (2013ZX04013-011) References [1] Bopeng Zhang, Niansong Zhang.
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[5] Guoqiang Li,Jin Jun Li.A tapered Timoshenko–Euler beam element for analysis of steel portal frames[J].Journal of Constructional Steel Research,2002,58(12):1531~1544
[7] Li YuMei The Out-of-plane Instability of a Bending Beam With Multiple Loads 2011 International Conference on Mechatronics and Intelligent Materials, MIM 2011:930-934
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Elastic stability Analysis of Space Frame Structures[J].Journal of Huaqiao University (Natural science),1994,15(3):293~296.

Materials and Methods 2.1 Sampling and Measuring.
Zhou: Journal of Hydroecology Vol. 32 (2011), p. 104
You: Environmental Science Trends (1994)
Yu: Environmental Science Vol. 35 (2014), p. 271
Hu: Journal of Plant Ecology Vol. 30 (2011), p. 650

Application of Sustainable clean energy has become a growing interest in mechanical, material science, manufacturing/fabrication and relevant engineering.
Design, manufacturing and material selection pertaining to the project are discussed.
Design Specifications Starting Point (Recycled Material) End (Final System) The automobile system is considered to carry a driver, thus a total of a 300-lb load due to the weights used.
Estimation of the Maximum Tire-Road Friction Coefficient, Journal of Dynamic Systems, Measurement, and Control, 125, 607-617. (2003)

The thermal effect analysis of the materials under the action of laser As the basis of lots kinds of laser processing technology, temperature field and its law of change over time reflect the inherent physical nature of laser material processing.
Assuming that the material under the action of laser is homogeneous and isotropic, the formula (1) can be simplified as: (2) In a thermal steady state conditions,, has a equation: (3) Normally, When laser heating materials and solve heat conduction equation, can be assumed that has nothing to do with temperature or to take the average value in a certain temperature range
Choose solid70 for unit, the density of the material is 2520kg•m.
References [1] Donghua Liu.Laser cutting,Laser journal,1992,13(4);207-213 [2] XieJ,KarA,RothenflueJ,etal.Comparative Studies of Metal Cutting with High Power Laser[A].SPIE[C].1997,3092:764-767
According to the thermal diffusion rate minimum discrete degree to determine the coefficient of thermal conductivity of new thermal probe method[J].Journal of China university of science and technology,2000,30(3);312-317 [4] B ARTHALOMEUSZ J B.Tharmal response of a laser-irradiated metal slab[C].Appl Phys,1988,64(8):3815-3819

Research on Air Quantitative Prediction Based on Mold Filling Simulation of High Pressure Die-casting ZHOU Jianxina, LIU Xinb, CHEN Liliang, CHEN Yang, ZOU Fei, LIAO Dunming, LIU Ruixiang State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China azhoujianxin@mail.hust.edu.cn, bhust_lx@foxmail.com Keywords: Air quantitative prediction, HZCAE, High pressure die-casting, Numerical simulation, Mold-filling process Abstract: Air-entrapped is a common defect for high pressure die-casting, so it is critical to discharge the air out of mold cavity as much as possible.
Computational Materials Science. 2005 (32): 480-488
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Huazhong University of Science and Technology, 2009.

Poly(ε-caprolactone) (PCL), poly(L-lactic acid) (PLLA), poly(3-hydroxybutyrate) (PHB) and poly(butanediol succinate) (PBS) are among the most commercial available materials nowadays [2, 3].
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The investigation of composition and corrosion resistance of PIII nitrided M50 steel Zhongwen Li3, a, Guangze Tang*1, 2, b, Xinxin Ma1, c, Mingren Sun2, d and Liqin Wang4, e 1 State Key Lab of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China 2 National Key Laboratory of Science and Technology on Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin, 150001, China 3 School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China 4 School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, China alizw98@126.com, boaktang@hit.edu.cn, cmaxin@hit.edu.cn, dhitsmr1962@126.com, elqwang@hit.edu.cn Keywords: M50 steel, PIII nitriding, Composition, Corrosion resistance Abstract.
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Rabalais: Journal of Physics: Condensed Matter Vol. 16 (2004), p. 581-602

Experimental Materials.
Jing: Polymeric Materials Science & Engineering. 20 (6) (2004), p. 11 [3] L.Wang and E.
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