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The compositions of materials are shown in Table 1.
Castro: Materials Science and Engineering A, 216(1996), p. 185 [4] L.H.
Upadhyaya: Materials Science and Engineering A, 279(2000), p. 275 [6] M.L.
Liu: Materials Science and Engineering A, 433(2006), p. 39 [7] M.L.
Liu: Materials Science and Engineering A, 486(2008), p. 167

Introduction Microwave absorbing materials usually are compound, thus the reduction of effective electromagnetic parameters are important for material design and fabrication.
The application of effective medium model for describing microwave absorbing materials is carried out in this paper.
[4] Sang-Eui Lee, Oyoung Choi, H.Thomas Hahn: Journal of Applied Physics,Vol.104(2008), p.1～7 [5] R.
Fanbin Meng, Yingqing Zhan: Applied Surface Science Vol.257 (2011),p.5000-5006
Liu: Journal of Alloys and Compounds Vol.234 (2006), p.1429–1433.

As shown in figure 3 (a) is a centerless cylindrical abrasive belt grinding experiment machine which is designed and produced by Chongqing Three Grinding Haida co., LTD., Chongqing material surface precision processing and equipment engineering technology research center, used for all kinds of materials of abrasive belt grinding processing.
Acknowledgement This research is supported by the national natural science foundation of China (NO.51275545).
Z: Journal of the Hebei Academy of Sciences Vol. 23(1), pp. 50-53
[8] Minori N, Mamoru K: Journal of Japan Society of Lubrication Engineers, Vol. 6(5), pp.157-162
[9] Bigerelle M, Najjar D: Journal of Japan Material Science, Vol. 38(11), pp. 2525-2536

In order to reduce the appearance of aviation material mishap, it is important to predict the aviation material mishap for safety management and decision-making body.
Conclusions An aviation material mishap prediction model based on neural network and its BP algorithm is proposed.
The validation example of BP neural network on data series of flight mishap 10000-Hour-Rate shows that the built prediction model of BP neural network can has a good accuracy to aviation material mishap, and it is able to describe the development trend of aviation material safety well and truly.
China Safety Science Journal, 20(6), 2010, 40-44 [3] G.
Journal of Civil Aviation University of China, 24(1), (2006), 53-56 [6] H.

The thickness of the mixed layer of Al and Mg alloy was 15μm, and how the materials were connected was clarified.
Connection between the three materials was insufficient in this case.
Davey, Feasibility study of twin roll casting process for magnesium alloys, Journal of Materials Processing Technology, Vol. 192-193(2007), pp.300-305
Koga, Development of manufacturing process of wrought magnesium alloy sheets by twin roll casting, Journal of Achievements in Materials and Manufacturing Engineering, Vol. 20, Issues 1-2(2007), pp.515-518
Randle, Formation of intermetallic phases in diffusion-welded joints of aluminium and magnesium alloys, Journal of Materials Science, Volume 46(2011), Issue 2, pp 357-364.

Kokosza, Specifying reasons for easily appearing fractures in rolls made of L200HNM cast steel, Works of the Faculty of Metallurgy and Materials Science, AGH University of Science and Technology, Krakow, 1999
Pacyna, The influence of hypereutectoid cementite morphology upon fracture toughness of chromium-nickel-molybdenum cast steel of ledeburite class, Journal of Materials Processing Technology 162-163 (2005) 336-341
Pacyna, Hypereutectoid cementite morphology and mechanical properties of Cr-Ni-Mo cast steel, Journal of Achievements in Materials and Manufacturing Engineering 17/1-2 (2006) 145-148
Key Engineering Materials, 641, (2015) 136-140
Journal of Achievements in Materials and Manufacturing Engineering, 47(2) (2011) 137–148

The microstructure and electrochemical performance of the nano-composite electrode materials were studied by AFM, XRD and electrochemical methods.
Nowadays, the candidates of electrode materials include porous carbon material with high specific surface and transition metal oxides, specially activated carbon (AC) and MnO2 electrode material[4-5].
Bao: Chinese Journal Functional Materiars， Vol. 34(2003), p. 550 (In Chinese) [6] S.
Zhu: Progress in Natural Science， Vol. 16 (2006）p. 441 [9] S.J.
Xu: Journal of Chemical Industry and Engineering, Vol. 59 (2008）, p. 514 (In Chinese)

Alsaba et al., [11] classified these materials into granular, nanoparticles, swellable / hydratable materials, flaky, acid soluble, filtration’s additive mixture, high fluid squeezes and fibrous.
Materials involved was ripe Tiger nut (yellow variety) 2.
Journal of King Saud University-Science, 31(2019) 136-141
Akpabio, Using agro-waste materials as possible filter loss control agents in drilling muds: A review, Journal of Petroleum Science and Engineering 163 (2018) 185-198
International Journal of Molecular Science, Vol. 9, (2008) 78-88.

Engineered materials could arrest aircrafts rushing out of runway, but it’s fragile and can be easily damaged by jet blast exhausted by taking off aircraft nearby.
Engineered Materials mean high energy absorbing materials of selected strength, which will reliably and predictably deform under the weight of an aircraft [2].
Engineered materials were produced in 1×1 meter square and in varied height.
Zeng: Journal of Experimental Mechanics, Vol.27 (2012), P. 354-360.
Zhao, Y.J Shi: Journal of Materials Science & Engineering, Vol.30 (2012), P.428-431.

In recent years, aerogel glass has been introduced as a new type of construction material used in the building materials industry [14].
As an insulating brick, SiO2 aerogel insulation composite material with nanopore structure has lighter mass and smaller size compared with traditional insulation materials, while achieving equivalent insulation effect.
Microporous and Mesoporou Materials Vol. 130 (2010), p. 295-302 [2] H.
Microporous and Mesoporous Materials Vol. 99 (2007), p. 23-29 [12] A.Parvathy Rao, A.Venkateswara Rao.
Science and Technology of Advanced Materials Vol. 4 (2003), p. 509-515