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The destruction of the ecological environment has made circulation of materials and flow of energy disorder, and abandoned mines have lost functions of ecosystem services of providing land, water, food and other ecosystem services for the human and lost living conditions of human.
Acknowledgements This work was financially supported by the Shaanxi Social Science Foundation (08E001).
Discussion on the Eco-environmental Problem and Protection Countermeasures in the Mining Area of Anhui province [J], Journal of Anhui University (Natural Sciences), 2007(4):91-93.
(in Chinese) [7] Zhou Xiuhui.The Structure and Function of Ecosystem and Sustainable Biosphere [J], Journal of Shandong Institute of Technology,2001(2):75-78.
[10] Weikai Bao, Qingheng Chen.The Degraded Processes and Features of Ecosystem [J], CHINESE JOURNAL OF ECOLOGY, 1999 (2):37-39

The results are detailedly introduced in literature [2] and [3], which provides important references for the research and application of plutonium materials.
The researchers at home and abroad have succeeded in using this method to calculate the properties of many materials[4-6].
Science Publishers, 1967
Materials Science and Engineering. 9 (2010) 012086-012092
Journal of Southwest University of Nationalities: Natural Science Edition. 36 (2010) 1014-1017.

Piping Material : Copper tube and ½ inch rubber tube Circulation Mode : Open loop system.
As a suggestion for any future development purpose for this study, it would be appropriate to highlight some recommendations; control chilled water circulation, increase charging capacity, experiment conduct at actual office room size, select materials with high resistant to thermal and conducted potential cost saving.
International Journal of Mechanical and Industrial Engineering, 63 (2012) 183-188
Academic Journal of Science. 1/2 (2012) 429-433
International Journal of Mechanical and Materials Engineering. 3 (2008) 160.

Application of nanomaterials in reservoir protection Nanometer plugging materials.
Conclusions With the rapid development of nanotechnology, nanotechnology can play an essential role in the preparation of novel materials with good sealing effects for reservoirs.
In the future, nanomaterials will have an essential application value and extensive prospect in the field of preparation of novel reservoir protection materials.
Preparation and property of polypropylene composite super-short fiber, Polymer Materials Science and Engineering, 26 (2010) 141-143.
Wang, Preparation of positively charged oil/water nano-emulsions with a sub-PIT method, Journal of Colloid and Interface Science. 361 (2011) 565-572.

Technology Research of Silicon Carbide by Extruding Zhuxing Tang 1,a, Xia Zhao 1,b, Huihui Tan 1,c, He Zhang 1,d 1School of Materials Science and Engineering, Shandong University of Technology; China atangzx@sdut.edu.cn,b xzhao126@126.com, ctan497977688@163.com, dzhanghe1215@163.com Key words: Phenolic resin Extrusion molding Silicon Carbide Abstract: The silicon carbide was extruded by the batch and sintered under Nitrogen atmosphere using phenolic resin as the main organic plasticizer.
Experiments Main materials α-SiC powders, carbon black, graphite, phenolic resin were used as raw materials.
References [1] Ungyu Paik, Hyeon Cheol Park, Sung Churl Choi: Materials Science and Engineering.
Vol. 36(2004), p.937 [4] Grida Imen, Evans Julian R G: Journal of the European Ceramic Society.
Vol.23 (2003), p.629 [5] Chou S, Sydow K, Martin P J: Journal of the European Ceramic Society.

Journal of Higher Education Research, 2008, 31 (4): 15-18
Vibration Analysis of Train and Truss Girder Bridge[J], Applied Mechanics and Materials,2011, 55-57: 2023-2026
Journal of Central South Forestry University, 2006, 26(3): 94-97
Railway Steel Truss Coefficient of Lateral Force Distribution{J}, Advanced Materials Research,2011,304:359-365 [13] Shiruo YANG.
Coupling Vibration Analysis of Vehicle-Bridge By Mode Method [J]．Journal of Shenzhen University of Science and Engineering, 2011, 28 (2): 131-135.

In the process of punch down, blanking force is passed to supporting plates by pneumatic-hydraulic supercharging jar，blanking force of maximum is 32Ton，for the sake of simulation analysis safety, it is assumed 300000N，the contact surface fixing plate and up die base is defined as non-penetration, modulus of elasticity of supporting plates, side-supporting plates are rigid, its materials is AISI-1045.
DU: Applied Mechanics and Materials, Vol. 44-47 (2011),pp.2862-2866
DU: Applied Mechanics and Materials, Vol. 101-102 (2012), pp132-135
LI: Journal of Machine Design, Vol.27(2010) pp.81-82
Hu: Journal of Machine Design, Vol.26 (2009) pp.62-64.

ADAMS software has also been adopted in the simulation analysis of seed metering process[2], but did not consider the shape of the corn seed particularity, especially, the spherical difficult to reflect the movement characteristics of the prolate corn seeds Discrete element method enjoyed the unique advantage in studying the motion of granular material and their interactions, which was able to describe the interactions between granular materials and between granular material and mechanical parts.
Acknowledgments The authors gratefully acknowledge the financial support of National Natural Science Foundation of China.
Applied Mechanics and Materials Vols.157-158(2012)pp 550-557
International Journal For Numerical And Analytical Methods In Geomechanics, 1997, 21: 347-358 [6] Momozu M，Oida A，Yamazaki M，et al．Simulation of a soil loosening process by means of the modified distinct element method[J]．Journal of Terramechanics，2003，39：207-220
Beijing: Science Press, 2009.

Numerical Simulation of Non-circular Hole Joint Precision Forming Yongfei Gu 1,a and Junting Luo 2,b 1 College of mechanical engineering, Yanshan University, Qinhuangdao Hebei, China, 066004 2 State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao Hebei, China, 066004 a yongfei666@ysu.edu.cn, b ljtlyk@yahoo.com.cn Keywords: Non-circular hole joint, Numerical simulation, Experimental study Abstract.
Reinsch: Journal of Materials Processing Technology, Vol. 185 (2007), pp.139
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Lu: Journal of Materials Processing Technology, Vol. 151 (2004), pp.289
Moon: Journal of Materials Processing Technology, Vol. 187-188 (2007), pp.586-590.

International Journal of Engineering, Science and Technology 3(2011) 161-171
Kumar, Machining parameters optimisation in turning of GFRP composites by desirability function analysis embedded with Taguchi method, International journal of Machining and Machinability of Materials 17 (2015) 95-107
Chakraborty, Cutting tool material selection using grey complex proportional assessment method, Materials and Design 36 (2012) 372–378
Chakraborty, Materials selection using COPRAS and COPRAS-G Methods, International journal of Materials and Structural Integrity 6(2012) 111-133
International Journal of Management Science and Engineering Management 9 (2014) 221-232.