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It also has been applied widely in the field of biomedical materials and clinical medical [3, 4].
Experimental Materials.
Materials Science Technology, Vol.14 (1992), p, 179-208 [4]Kevin R, Steadman J R, Rodkey W G, The Journal of Bone Joint Surgery, Vol.79(1997) ,p,1770-7 [5] Khor E.
Journal of Materials Science, Vol,7(1996),p, 215-221 [8] L.H.H, Olde Damink.
J,.Dijkstra , M,J A, Luyn, P.B.Wachem,P,Nieuwenhuis and J,Feijen, Journal of Materials Science,Vol,6( 1995),p,460-472 [9] Ming T S, Ju C H, Geng C Y,et al.

Component Materials Knowing the materials that make up the FC is a fundamental aspect to study and understand its properties and characteristics.
Kadela, "Mechanical characterization of lightweight foamed concrete," Advances in Materials Science and Engineering, vol. 2018, pp. 1-9, 2018
Ramamurthy, "Shrinkage behavior of foam concrete," Journal of materials in civil engineering, vol. 21, no. 11, pp. 631-636, 2009
Ramli, "Experimental production of sustainable lightweight foamed concrete," Current Journal of Applied Science and Technology, pp. 994-1005, 2013
Liang, "New formulation of compressive strength of preformed-foam cellular concrete: an evolutionary approach," Journal of Materials in Civil Engineering, vol. 28, no. 10, pp. 1-12, 2016

Introduction Silicas have been widely employed to create high-performance or high-functional composites by combination with organic materials over the last few decades.
The sol-gel process provides a convenient approach to the synthesis of organic/inorganic composite materials.
Novak: Advanced Materials, Vol. 5 (1993), p.422
Lewis: Journal of Imagine Science and Technology, Vol. 47 (2003), p.400 [12] Rich Y.
[14] Katri Vikman: Journal of Imagine Science and Technology, Vol. 47 (2003), p.30 [15] L.

Introduction Concrete is the most used construction material in the world, due to the fact that its basic components are available worldwide and are made with the most abundant materials of the earth crust, limestone and clay above all.
References [1] Viviani, Mix design for durable recycled concretes, XII International Conference on Durability of Building Materials and Components.
Gutierrez, Study on the influence of attached mortar content on the properties of recycled concrete aggregate, Construction and Building Materials 23 (2009) 872–877
Journal of Tongji University (Natural Science), 35(11) (2007) 1445-1449.
[12] Viviani, Dorthe, Bugnon, “Structural recycled concrete science and market: a success story” XIII International Conference on Durability of Building Materials and Components, São Paulo, Brasil, (2014)

Acknowledgements This work was financially supported by the National Natural Science Foundation of China (41072235) and the Natural Science Foundation of LiaoNing Province of China (20102006).
Sharan: International Journal of Rock Mechanics & Mining Science Vol. 40(2003), p. 817–824
Kyung, J.K Yong: International Journal of Rock Mechanics & Mining Science Vol. 43(2006), p. 616–622
Cai: Rock Mechanics and Engineering (Science press, China 2002) (in Chinese)
Wang: Journal of Northeastern University (Natural Science) Vol. 26(2005), p.160–163 (in Chinese)

They are generally made of hard materials such as silicon nitride, alumina, silicon carbide and tungsten carbide.
The seal rings are often made of hard materials such as silicon nitride, alumina, silicon carbide and tungsten carbide for their excellent mechanical, thermal properties and chemical stability, and the form error is restricted within the length of one to two helium light band [4, 5].
Journal of Mechanical Engineering, 2012, 48(21), pp: 183-189.
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2013, 227(1), pp: 111-119
Journal of Materials Processing Technology, 2008, 201, pp: 606-611

Table.2 Thermal physical parameters of materials Material Thermal conductivity [] Aluminum structure 121.4 FPGA 33.7 PCB Results and Discussion Through the finite element analysis temperature distributing of the PCB and the temperature of FPGA were gotten (shown in Fig.4 and Fig.5).
Acknowledgements This paper is supported by the Knowledge Innovation Program of the Chinese Academy of Sciences.
The help about analysis model from Li Kai in Academy of Opto-electronics Chinese Academy of Sciences is gratefully acknowledged.
Li: Journal of Zhengzhou University of Light Industry (Natural Science), Vol. 22(2007), p.75 (In Chinese) [4]G.C.
Wang, Tongmin Jiang: Journal of Beijing University of Aeronautics and Astronautics, Vol. 32(2006), p.716 (In Chinese) [5]Q.

Traditional building materials, such as cement, clay brick production etc, consume too much energy and cause great pollution.
And because these materials are heavy, floors and concrete beams are often the direct cause of the casualties when an earthquake comes.
Therefore, at this stage it is urgent to develop environment-friendly building materials and low-carbon, light seismic building structures[1,2].
The composite bearing wall of the structural system has a cavity to ensure good thermal insulation properties, and on this basis it can be filled in the wall cavity or covered outside with thermal insulation materials.
Steel-bamboo composite wall has functions of maintenance and separating and can be filled with all kinds of heat preservation, thermal insulation, and waterproof materials.

Eutectic alloys are important to materials engineering, causing extensive theoretical and experimental study of the relationship between microstructure and solidification conditions.
Tin-lead solder for metal interconnects were widely used until the early 2000s when policies restricting the use of toxic materials in electrical and electronic equipment began [8].
Wilcox (Ed.), Materials Processing in High Gravity. -.
Zeng: Materials Science and Engineering R Vol. 34 (1) (2001), p. 1
Min: Journal of Materials Science Letters Vol. 13 (1994), p. 1051

Introduction Adiabatic shear band (ASB) is generally observed in materials during dynamical loading, as one of major failure mechanism [1], have received increasing attention in the past several decades [1-8].
Shear localization and shear bands pattern in heterogeneous materials.
In: Dynamics of Heterogeneous Materials, New York, (2001) p. 307-384 [4] Q.
Material Science and Engineening A (2004)vol384, p. 35-46
Analysis of shear banding in twelve materials.