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Journal of Natural Disasters, 2006, 15 (6):77 -83.
Journal of Environmental Sciences, 2009, 29 (4):808-814.
Meteorological Science, 2010, 30 (6):868-873.
Journal of Natural Disasters, 2004,13 (3):58-64.
[8] MALM WC.Earth-Science Reviews,1992,33(1):1-36

China 3College of Life Sciences, Beijing Normal University, Beijing 100875, P.
Science Press, Beijing [2] Greig-Smith P(1983).
Journal of Beijing Normal University (Natural Science) 42(3): 295–299 (in Chinese) [11] Catana A J Jr (1963).
Journal of Shandong Normal University (Natural Science) 10(2): 178–181 (in Chinese) [15] Dai X H, Yu S X (2004).
Journal of Tropical and subtropical Botany 12(5): 405–410 (in Chinese)

It also shows that the main material source of sediment in the mine is caused by mining activities.
Acknowledgements This work was financially supported by the Sichuan Science and Technology Support Program (2009FZ0051), National Natural Science Foundation of China(40603017).
Journal of Anhui Agri.
South west China Journal of Agricultural Sciences, Vol. (3) (2010),p.777-781. in Chinese [6]Tuo Xianguo,Xu Zhengqi,Teng Yanguo,Mu Keliang,.
Journal of Jilin University(Earth Science Edition), Vol. (2) (2007),p.278-283. in Chinese [8]Xu Zhengqi,Tuo Xianguo,Ni Shijun,Zhang Chengjiang.Composition of Water Sediments in Panzhihua mine Area and Its Environmental Effect.

The effect of ultrasonic injection on the microstructure and mechanical properties of A356 alloy Byoung-IL KANG 1,a, Dae-Gyun KO 1,b , Jeong-IL YOUN 1,c, Young-Jig KIM 1,d 1 School of Advanced Materials Science and Engineering, Sungkyunkwan University, 300 Cheoncheon-dong, Jangan-gu, Suwon, 440-746, Korea a subs39th@skku.edu, bkdk121@skku.edu, cyounj1@skku.edu, dyjk1122@skku.edu Keywords: ultrasound, grain refinement, nondendritic structure, A356 alloy.
Experimental procedure Commercial hypoeutectic A356 alloy ingot was used as the raw material.
Yin and S.K Das/The minerals, Metals & Materials Society, New Orleans, Louisiana (2008) [2] M.
Griffiths : Materials Science and Engneering A, 197 (2), (1995), p. 171 [4] C.
Hirasawa, Journal of Crystal Growth, 295 (2006), p. 97 [10] X.

Material properties should be firstly determined.
Blade material is 18 13 2 Cr Mn Mo CuN .
Yang: Journal of Southwest University(Natural Science Edition) Vol.29 (2007) No.9, p.158-162
Fang: Material Mechanics (Higher Education Pres, Beijing 1994) [3] C.Y.
Zhu: Ship Science and Technology Vol. 24 (2002) No.6, p.10-12.

Experimental Materials.
The mix proportions of RAC with a target slump of 100~150mm were calculated according to the reference [5], where both contents of fly ash and slag were taken as 20% of general binder materials by mass, and additional water was added in the terms of water absorption of recycled coarse and fine aggregate at 24h.
[2] Xiao J Z, Lei B, Zhang C Z, On carbonation behavior of recycled aggregate concrete, Technological Sciences.9 (2012) 2609-2616
[4] Geng J,Sun J Y, Characteristics of the carbonation resistance of recycled fine aggregate concrete, Construction and Building Materials.49(2013)814-820
[6] Liu X W,Li Q Y,Li Y M etc., Research of recycled fine aggregate concrete carbonization, Journal of Qingdao Technological University.30 (2009)159-161.

So the bones of the cervical spine are set to be isotropic elastic material.
Acknowledgment Project 61273358 supported by National Science Foundation of China.
Journal of biomechanics, 2005, 38(5): 1045-1054
Orthopaedic Biomechanics Materials and Clinical Study, 2007(05)
Biomedical Sciences Instrumentation.2000,36:337-342

The effect of ultrasonic injection on the microstructure and mechanical properties of A356 alloy Byoung-IL KANG 1,a, Dae-Gyun KO 1,b , Jeong-IL YOUN 1,c, Young-Jig KIM 1,d 1 School of Advanced Materials Science and Engineering, Sungkyunkwan University, 300 Cheoncheon-dong, Jangan-gu, Suwon, 440-746, Korea a subs39th@skku.edu, bkdk121@skku.edu, cyounj1@skku.edu, dyjk1122@skku.edu Keywords: ultrasound, grain refinement, nondendritic structure, A356 alloy.
Experimental procedure Commercial hypoeutectic A356 alloy ingot was used as the raw material.
Yin and S.K Das/The minerals, Metals & Materials Society, New Orleans, Louisiana (2008) [2] M.
Griffiths : Materials Science and Engneering A, 197 (2), (1995), p. 171 [4] C.
Hirasawa, Journal of Crystal Growth, 295 (2006), p. 97 [10] X.

Effect of Micro-alloyed Treatment for 5183 Welding Wire on Microstructure and Tensile Property of Welded Joint Xiaoming WANG1a, Sheng ZHU1b, Zhihao ZHAO2c, Qiwei WANG1d, Xiaodong ZHAO1e 1National key Laboratory for Remanufacturing, Academy of Armored Force Engineering, Beijing 100072, China; 2Key Laboratory for Electromagnetic Processing of Materials, Northeastern University, Shenyang 110001, China aUwangxm@126.com. bZusg@sina.com. czzh@126.com.
Therefore, how to improve welding quality of 7A52 aluminum alloy had become a hotspot in materials science and engineering field.
Materials and Method The substrate material was 7A52 aluminum alloy.
Journal of Central South University(Science and Technology,2007,38(4):618 [2] SUO Xiangbo,QIU Ji,ZHANG Jianhui.

The paper presents a design method for the application of GA-BP Neutral Network in optimum direction for catalytic agent and material.
Introduction The research on the relation among composition, structure, and properties is a subject throughout the material science.
The traditional research methods on trial-and-error empirical or semi-empirical materials waste a lot of resources, manpower and time.
The comparisons between BP and GA-BP BP GA-BP EMSE 0.705% 0.475% Training Times >50 42 Conclusion This paper presents a GA-BP network method for catalytic agent and material.
J.: Genetic Algorithms for Estimation Problems with Multiple Optima, Non-Differentiability, and other Irregular Features,” Journal of Business and Economic Statistics, 1995, 13(1), 53-66