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A metal cavity filled with absorber materials was used to obtain the unidirectional radiation patterns and its height was 30 millimeters.
For example, in [1], a novel sine-wave meander Archimedean spiral antenna is presented, and addition of sine-wave into Archimedean helix will prolong the electrical length of an antenna arm with a given radius of helix，which will enhance antenna miniaturization and maintain excellent radiation property of Archimedean spiral antenna．In [2], a hybrid backed-cavity with electromagnetic band-gap (EBG) structure and a perfect electronic conductor (PEC) is proposed for an Archimedean spiral antenna, and this cavity makes the spiral antenna work operate over the 10:1 bandwidth and without the loss introduced by absorbing materials that are used conventionally to broadband spirals.
Journal of microwaves,　2009, 25(2):53-57
Chinese Journal of Radio Science, 2005, 20(6):699-702
Journal of Shanghai University (Natural Science), 2008, 14(6):581-584.

Natural products as corrosion inhibitor for metals in corrosive media—a review. materials letters, 62(1), 113-116
Indian Journal of Science and Technology, 8(17), 1
International Journal of Electrochemical Science, 3(5), 528-555
Arabian Journal for Science and Engineering, 38(1), 85-97
The Malaysian Journal of Analytical Sciences, 18(1), 28-36.

Chinese Journal of Nuclear science and engineering,1989,9(3）：237-250 [3] Yang Wendou.
Journal of Nuclear Materials,1993,204:1-13 [7] HU Yun,Xu Mi.
Journal of Nuclear Materials, 2003,321:210-220 [11] Meyer M, Hofman G, Hayes S, et al.
Journal of Nuclear Material,2002, 304:221-236 [12] Xiao Liu, Dazhi Qian, Tiecheng Lu.
Advanced Materials Research Vols 335-336(2011):1285-1292, [13] Yeon Soo Kim, G L Hofman.

Anifantis, Vibration analysis of multi-walled carbon nanotubes using a spring-mass based finite element model, Computational Materials Science 47 (2009) 168-177
Materials science and Engineering C 16 (2001) 3-10
Computational Materials Science 48 (2010) 730-735
Computational Materials Science 50 (2010) 790-795
Advanced Materials 17 (2005) 3011-3018

To date, many composites, such as Pd/GO[12,13], Fe/GO[14], TiO2/GO[15], Mn2O3/GO[16], have been successfully prepared and applied in catalytic field, absorbent material, and stealth material.
[3] Jun Tian, Jiazheng Zhao, Qunji Xue: New Carbon Materials, Vol. 12, No. 2（1997）p.26.
[5] Rabin Bissesur,Peter K.Y.Liu,et al: Synthetic Metal, Vol. 156（2006）p. 1023 [6] Yanhong Zou, Qian Wu, Hongbo Liu, et al: New Carbon Materials, Vol. 20, No. 4（2005）p. 360.
Király, Á.Patzkó, et al: Carbon, Vol. 46（2008）p. 1631 [13] Kazuma Gotoh, Koji Kawabata,et al: Carbon, Vol. 47（2009）p. 2120 [14] Yan-Hong Zou, Hong-Bo Liu, Li Yang: Journal of Magnetism and Magnetic Materials, Vol. 4（2006）p. 343 [15] Yunqiu He, Qiong Zhang,Xiaogang Chen, et al: Chinese Science Bulletin, Vol. 55, No. 7（2010）p. 620.
[16] Yang Xiao-Jing, Tang Wei-Ping: Journal of Shanxi University of Science&Technology(Natural Science Editoin), Vol. 22, No. 5（2004）p. 25 [17] Yuzhi Su, Chengbo Liu,Ruifen Zhang, et al: Journal of Guangzhou Normal University(Natural Science Editoin), Vol. 21, No. 3（2000）p. 55.

Such materials are polyalkylenesiloxanes.
The optimal material science solution would be to combine the properties of polymers with a siloxane and hydrocarbon chain.
Chemistry–A European Journal, 22(17) (2016) 6059-6070
Materials science of membranes for gas and vapor separation.
Science. 303 (2007) 132-139

In some cases, customers select manufacturers, suppliers of specialist parts and material suppliers.
Specifically, several foreign language database are used to search relevant literature in order to ensure the representativeness and completeness of this study such as EBSCO, Science Direct, Blackwell, Emerald, Springer, ProQuest etc.
Acknowledgment This work was supported by the Scientific Research Plan Project of Education Department of Shaanxi Provincial Government under Grant 11JK0118, the Soft Science Project for Science and Technology Department of Shaanxi Province under Grant 2010KRM38(2) and by the Base Research Project of the Education Department of Shaanxi Province under Grant 2010JZ20.
Hendrick: Partnering characteristics: A dyadic perspective, Journal of Business Logistics Vol. 1 (1995), p. 41-64
Dudley: The long-term strategic impact of purchasing partnerships, International Journal of Purchasing and Materials Management Vol. 30 (1994), p. 13-18

The results will provide the basis for protecting engineering materials and structures not to erode by wind-sand environment.
The results will provide the basis for protecting engineering materials and structures not to erode by wind-sand environment.
Journal of Natural Disasters,1996,5(2):86-94
Journal of Meteorology,1998,24(2):39-44
Chinese Journal of Geophysics. 2006,49(1):83-92

Experimental Materials.
Dong, et al.: Journal of Materials Chemistry Vol.19(2009),p. 2817
Tunkasiri: Journal of Materials Science Letters Vol. 20(2001), p.1943
Qin: submitted to Proceedings of The 2011 International Conference on Materials Science and Engineering Application(2010)
He: submitted to Journal of Polymer Materials Science and Engineering(2009)

Materials and methods Collection of water samples.
Hydrophobic acids at 213 nm and hydrophilic acids at 210 nm appear the absorption peaks, which shows that most of the nitro kind material stay in acidity materials.
Journal of Environmental Sciences, 2009, 21(9): 581–588
Journal of Hazardous Materials, 2000, 74(3): 133-147
Journal of Hazardous Materials, 2000, 74(3): 133-147.