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Other mechanical and chemical industries also used substantial raw materials which were related to nitrate.
It would cause serious nitrate pollution when some of these materials were drained into surface waters. 2.2.
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REEs located in the lanthanide group are strategic materials but difficult to obtain.
REEs provide significant technological developments in materials science.
This is very useful because the synthesis of chemical compounds requires a lot of costs and raw materials, and can produce hazardous waste.
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Some Anatomical Aspects of Human Skull Some bones of a human adult (teaching materials of the University of Medicine and Pharmacy of Craiova) have been studied for analysis of the geometric forms.
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Acknowledgements This work is supported by the National Natural Science Foundation of China through grant 10672060 and 50808085.
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A two-scale asymptotic expansion is employed to approximate the displacement field (2) By introducing a eigendisplacement , the homogenization coefficient of unit cell is obtained [1]: (3) where is the volume of unit cell, is the elastic modulus of constituent materials, is the first-order displacement field of microscopic structure, and can be computed by (4) 2.
Honeycomb holes use weak material instead, E=0.00001Gpa, υ=0.3.
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[3] Shi Yiping, Zhou Yurong: The finite element analysis example explanation of ABAQUS , Mechanical industry press, Beijing, 2006 [4] Zhang Jianhua, Dinglei: Proficiency with basic entry in ABAQUS , Electronic industry press, Beijing,2012 [5] Cao Jinfeng, Wang Xuchun, Kongliang: The Python language in the application of Abaqus , Mechanical industry press, Beijing, 2011 [6] Jiao Guiqiong, Jia Purong: Mechanics of composite materials, Northwetern Polytechnical University press, Xi’an,2008 [7] Zhao Jinsen: Mechanical propertoes of equivalent model research of aluminium honeycomb sandwich panel,Master's thesis of Nanjing University of aeronautics and astronautics.2009:7~28 [8] Fu Minghui, Yin Jiuren: Equivalent elastic parameters of the honeycomb core, Journal of Mechanics,1993,31(1):113~118

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Zhang, “Manufacturing Feasibility and Forming Properties of Cu-4Sn in Selective Laser Melting,” Materials, vol. 10, no. 4, p. 333, Mar. 2017, doi: 10.3390/ma10040333
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Materials and Methods This project was the experiment method by designed and constructed new one crucible furnace which used LPG gas the capacity of furnace is 40 kilograms for aluminium melting then melted aluminium to find out the melting rate and fuel consumption for cost comparison between diesel oil using and LPG gas using.
Refernces [1] Kim, C – H. and kwon, T.H. (2001) Materials and Manufrcturing Processes 16(6), 789-801
[2] Gunasegaram, D.R., Finnin, B.R. and Polika, F.B. (2007) Materials Science and Technology 23(7), 847-856
[3] Dargusch, M.S., Dour, G., Schauer, N., Dinnis, C.M. and Savege, G. (2006) Journal of Materials Processing Technology 180, 37-43
Dahle, A.k. and Lohne, O. (2005) Material Science and Engineering.