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So SiO2 aerogels can be widely used as window insulation materials [2], high-performance rechargeable batteries [3,4], Cerenkov detectors [5,6], optical sensors for oxygen gas [7], efficient adsorbent and catalyst carrier and so on [8,9].
According to International Union of Pure and Applied Chemistry (IUPAC) definition, both samples exhibited type IV isotherms with type H2 hysteresis loops, typical of mesoporous materials.
Wu, High strength SiO2 aerogel insulation, Journal of Non-Crystalline Solids, 225(1998) 101-104
Manara, Silica Aerogel Granulate Material for Thermal Insulation and Daylighting, Solar energy, 79(2005) 131-139
Knez, Adsorption of Toxic Organic Compounds from Water with Hydrophobic Silica Aerogels, Journal of Colloid and Interface Science, 310(2007) 362-368

In constitutive Eq. 6, materials parameters are α=0.0056 (1/MPa), n=5.2411, Q=505644 (J/mol), ln(A)=47.3089 (1/s), the billet density is ρ=8000 (kg/m3), the air constant is R=8.314 (J/(mol·K)).
Acknowledgements Item Sponsored by National Natural Science Foundation of China (50831008).
Ren: Journal of Shanghai Dianji University, (2009) No.4, P263.
Nie: Journal of Plasticity Gineering, (2009) No.16, P.39.
Wu: Journal of Plasticity Engineering, Vol. 13 (2006) No.4, P34

Even though A356-SiC Metal Matrix Composite (MMC) materials are using for Aerospace and Automobile industries; but unable to use widely due its poor machinability [5].
Used stir-casting method for uniform scattering of nanoparticles to increase the stuffs of the composite materials [2].
Shabani, “Mechanical Properties of A356 Matrix Composites Reinforced With Nano-Sic Particles” Strength of Materials, Vol. 44, No. 6, p.p 686- 692November, 2012 [4] Sudhir Kumar*, S.P.
Jassim, “ Observations on the Electrical Properties of Al-Sic Composite”, Journal of Al-Nahrain University Science, Vol.15 (4), December, 2012, pp.120-128 [7] D.Suneel, Rao DN.
[9] ASTM Standard: E 92-82, “Standard Test Mehod for Vickers Hardness of Metallic Materials” [10] http://www.ndt-ed.org / EducationResources / CommunityCollege / Materials / Physical_ Chemical / Electrical.htm [11] G.E.

Therefore it could be seen that the application of new-type ceramic materials in ball screw will not only improve feed speed, but also obviously ameliorate axial contact stiffness and axial positioning accuracy of ball screw, etc.
LT2010020), Important National Science & Technology Specific Projects of China (Grant No. 2009ZX04011-033), Major Program of National Natural Science Foundation of China (Grant No. 50835001) and Science and Technology Program of Liaoning Province of China (Grant No. 2007220014).
Du: Journal of University of Electronic Science and Technology of China Vol. 23 (1994), p. 280-285
Hashemi: ASME Journal of Applied Mechanics Vol. 48 (1981), p. 543-548
Abba: ASME Journal of Tribology Vol. 128 (2006), p. 660-664.

Chalcogenide glasses materials are promising due to their high refractive index.
Both conduction mechanisms are familiar in amorphous materials [14-17].
Electronic Processes in Non-Crystalline Materials.
Zulfequar, DC Conductivity and Dielectric Behaviour of Glassy Se100–xZnx Alloy, Open Journal of Inorganic Non-metallic Materials, 2, (2012): 11-17
Shaban, Calculating the Mechanisms of Electrical Conductivity and Energy Density of States for Se85Te10Sn5-xInx Glasses Materials, Journal of Green Engineering (JGE), 10(9), (2020): 5487–5503

Materials scientists and researchers have realized that the mechanical properties of materials can be altered at the fundamental level, i.e. at the atomic-scale.
Graphite flakes have been known as host materials for intercalated compounds.
CHALLENGES IN PROCESSING AND MANUFACTURING OF NANOCOMPOSITES Nanocomposite materials hold the potential to redefine the field of traditional composite materials both in terms of performance and potential applications.
New Advances in Polymer/Layered Silicate Nanocomposites, Current Opinion in Solid State and Materials Science, 6(3): 205–212
[16] Rupesh Khare, Suryasarathi Bose “Carbon Nanotube Based Composites- A Review” Journal of Minerals & Materials Characterization & Engineering, Vol. 4, No.1, pp 31-46, 2005 [17] O.

Applied Mechanics and Materials, 2013(303-306):926-929
Journal of Communication and Networks.2005,7(4):429-437
[3] HE Qin-bin, CHEN Fang-yue，CAI Shui-ming etc,in: An efficient range-free localization algorithm for wireless sensor networks.Science China Technological Sciences.2011, 54(5):1053-1060
Chinese Journal of Sensors and Actuators.2007, 20(5):1129-1133
Applied Science, Materials Science and Information Technologies in Industry Applied Mechanics and Materials, 2014(513-517):3496-349.

Materials and Methods Materials and Reagents.
The main components of benzene-methanol extractive of freeze-dried Chinese Hackberry leaves contain many materials of rare natural medicines, especially including Eucalyptol.
Some components in the benzene-methanol extractives of freeze-dried Chinese Hackberry leaves can be used as materials of cosmetics and dyes.
Zhou: Journal of Nanjing Forest ry University (Natural Sciences Edition).
Zhang: Science Vol. 316 (2007), p. 1597-1599 [22] Y.

The material selected is S2-Glass/Epoxy which has a better material properties as compared to the other glass fiber composites.
Beckwith, Composite reinforced fibers-I The glass family, SAMPE Journal 45 (2009) 7-8
Composite Materials Proceedings of Japan-US Conference Tokyo, (1981) 529 – 538
Journal of Composite structure vol.60 (2003) 317-325
[9] ZhengYinhuan, XueKa, Huang Zhigao, “Finite Element Analysis of Composite Leaf Spring”, Computer Science and Education vol.5 (2011) 316-319.

Filling stope with filling material Stope with filling material is a viable means for surface does not allow collapse.
The essence of filling method is use waste rock or external filling material to landfill stope.
Acknowledgment Financial support from China Postdoctoral Science Foundation funded project (2012M511953) and National "Twelfth Five-Year" Plan for Science & Technology Support (2011BAB08B01) .
Mining Science and Technology, 2009, 19 (3) ：369-372(in Chinese)
Journal of Central South University, 2006, 37(2)：371–375 (in Chinese)