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Citation & Copyright (to be inserted by the publisher ) Growth of GaN films on porous 4H-SiC substrate by metal-organic chemical vapor deposition Jae Kyeong Jeong 1,2, Ho Kuen Song 2, Myung Yoon Um 2, Hyun Jin Kim 2, Hui-Chan Seo 2, Hee Jin Kim 2, Euijoon Yoon 2, Cheol Seong Hwang 2, and Hyeong Joon Kim 2 1 Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA 2 Inter-university Semiconductor Research Center and School of Materials Science and Engineering, Seoul National University, Seoul 151-742, Korea Keywords: GaN, MOCVD, and porous SiC Abstract.
The epitaxial quality of GaN films were analyzed by photoluminescence (PL) at 10K using the 325 nm line of a 20mW He-Cd laser and high resolution X-ray diffraction (HRXRD) with triple-axis crystal diffractometry (TCD) as well as double-axis crystal diffractometry (DCD) (Bede Science Instruments HRXRD with 2 kW Cu radiation source) Results and Discussion Figure 1 shows the surface morphology of GaN film on a standard on-axis 4H-SiC substrate.
Journal Title and Volume Number (to be inserted by the publisher) 3 surface of GaN film.
The distance between SiC and GaN reflexes along the y-axis direction (θ/2θ direction) was almost identical to the calculated value from the bulk lattice parameters of the two materials indicating that the strain in the grown film was negligible.

Table 1 gives the material properties and structural parameters of the piezoelectric energy harvester.
Acknowledgements This work is supported by the National Natural Science Foundation of China (No. 51077018) and Science and Technology Planning Project of Qiqihar of China (GYGG2010-02-1).
White: Measurement Science and Technology, vol. 17 (2006), p.175-195 [5] L.
Li: Smart Materials and Structures, vol. 18 (2009), 115025 [8] H.A.C.
Tilmans: Journal of Micromechanics and Micromechanics, vol. 7 (1997), p. 285-309 [9] B.

Methods and materials Tested algae, culture medium and water samples Axenic cultures of cyanobacterium Microcystis aeruginosa (FACHB 905), Microcystis wesenbergii (FACHB 908), Microcystis viridis (FACHB 979), Aphanizomenon flos-aquae (FACHB 1039), Plectonema boryanum (FACHB 402), Phormidium sp.
Huisman: Science 320(2008), p.57-58
Guo: Science 317(2007), p1166 [7] R.
Wang: Journal of Environmental Sciences.
Landry: Journal of Geophysical Research.

Injection molding is one of the most commonly used methods for material molding.
Journal of Injection Molding Technology.5(4) (2001) 229-232. ,[] D.
Polymer Engineering and Science. 42(12) (2002) 2471-2481. ,[] G.
GIM focus on press control, the effect on material properties is poor.
Acknowledgement The research work was supported by National Nature Science Foundation of China(51005211), Priority Themes of Major Projects in Zhejiang Province (No. 2008C01059-1) , the Public Industrial Technology Projects of Zhejiang Province (No.2010C31050) and Zhejiang Provincial Natural Science Foundation of China (Y107622).

JX Social Sciences, 2006, (1):33-37
Journal of Southeast University(Philosophy and Social Science),2007, (S2)
Science & Technology Information,2009,(22)
Industrialized Development and Commercial Management of Non-material Cultural Heritage [J] Henan Social Sciences,2009, (04)
Beijing: Science Press, 2010:124.

Progress in Materials Science, 46 (2000), p. 505 [3] J.
Yang: Cracks in functionally graded materials.
Materials Science & Engineering, A362 (2002), p.2 [6] M.
Submitted to Journal of Biomedical Materials Research (2010) [8] Y.
Jeandin: Damaging of materials by bi-dimensional dynamic effects.

The raw materials used for preparing test pieces were SiC powder of 99.0 % or greater purity, graded to average grain sizes of 0.5 μm, 1 μm, 2 μm, and 4 μm, and carbon powder of 99.98 % or greater purity, graded to an average grain size of 0.3 μm.
Page: “Microstructural characterization of “REFEL”(reaction-bonded) silicon carbides”, Journal of Materials Science, Vol. 13, (1978), p. 885-904
Itoh: “Development of high-strength reaction-sintered silicon carbide”, Diamond and Related Materials, Vol. 12, (2003), p. 1201-1204
Suyama: “Evaluation of Microstructure for High-Strength Reaction-sintered Silicon Carbide”, Journal of the Society of Material Science Japan, Vol. 57, No. 3, (2008), p. 304-309
Petch: “The cleavage strength of polycrystals”, Journal of the Iron and Steel Institute, Vol. 174, No. 5, (1953), p. 25-28

Anti-electromagnetic radiation materials.
Electrical conductivity of fiber can have the function of shielding; at present, shielding materials mainly include silver fiber, stainless steel fiber, and chemical nickel plating fiber, carbon fiber, the most widely used is stainless steel fibers.
So you should choose suitable weft density in practical production, shielding effectiveness of the fabric can be ensured and we won't have too much difficulty.[2] Fiber materials of equal length, weight, case, woven fabric of organizational structure will have a significant impact on its electromagnetic shielding.
Acknowledgements This work was financially supported by Shandong Natural Science Foundation(ZR2011EMM011).
Organizational structure impact on electromagnetic shielding effectiveness of knitted fabrics • Shanghai Textile Science and technology January 2012 volume 40th

A Study of the Microstructure and Properties of Electroformed Ni-P Model Insert Shih-Tsung Ke 1, Jeou-Long Lee2 , Yih-Min Yeh3, Shuo-Jen Lee 4, Ming-Der Ger 1a 1 Department of Applied Chemistry & Materials Science, Chung-Cheng Institute of Technology, National Defense University, Tao-Yuan, Taiwan, ROC 2 Department of Chemical & Materials Engineering, Lung Hwa University of Science and Technology, Tao-Yuan, Taiwan, ROC 3 Graduate Institute of Opto-Mechatronics and Materials, WuFeng Institute of Technology, Chia-yi, Taiwan, ROC 4 Department of Mechanical Engineering, Yuan Ze Fuel Cell Center, Yuan Ze University, TaoYuan, Taiwan, ROC a mdger@ccit.edu.tw Keywords: Ni-P Alloys, Electroforming, Internal stress, Pulse plating Abstract.
In this study, a Ni-P alloy electroforming nanostructure material with low surface roughness and low internal stress was developed by using a pulse current.
In this research, we focused on develop a new material of Ni-P alloy with nano grain size structure that was produced by PC electroforming.
Fu, Japanese Journal of Applied Physics 42 (2003) p. 6683

Dechromization Kinetics of Limonitic Laterite Ores by Alkali-roasting Method Using Sodium Hydroxide Qiang Guo1,2,3,a,Jingkui Qu1,2,b, Bingbing Han1,2,c,Guangye Wei4,d, Tao Qi 1,2,e* 1National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Beijing 100190, China 2Key Laboratory of Green Process and Engineering，Institute of Process Engineering， Chinese Academy of Sciences, Beijing 100190, China 3Graduate School of Chinese Academy of Sciences，Beijing 100190, China 4School of Materials Science and Engineering，University of Science and Technology Beijing, Beijing 100083, China aqguo@home.ipe.ac.cn, bjkqu@home.ipe.ac.cn, cbbhan@home.ipe.ac.cn dgywei@home.ipe.ac.cn, etqgreen@home.ipe.ac.cn * Corresponding author, Tel.: + 86 10 62631710; Fax: + 86 10 62631710.
Experimental Materials.
Elias: AGSO Journal of Australian Geology and Geophysics Vol. 17 (1998), p. 81-88 [6] Y.V.
Han: submitted to International Journal of Minerals, Metallurgy, and Materials (2010) [9] S.