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Several techniques for the reduction of dislocation density have been proposed for the III-nitride materials [6–11].
Japanese journal of applied physics, 1998, 37(4A), p.398
Journal of Applied Physics, 1998, 83(7), p.3656-p.3659
Journal of crystal growth, 2001, 231(3), p.371-p.390
Journal of Crystal Growth, 2009, 311(10), p.3080-p.3084.

Wastage of material in Rapid Prototyping is very less.
Rapid Prototyping uses materials economically.
Conventional processes involve material removal processes, in which the final shape of product is obtained by machining of excess material, which leads to wastage of material, hence increasing the cost.
Science Journal of Clinical Medicine. 
Art and science of cleft lip and cleft palate repair(Vol. 1).

With the evolution of society new materials or classes of materials must be developed.
In this paper, we aimed to produce bulk metallic glasses materials by welding the ribbon packages in ultrasonic field.
Research on welding of amorphous materials has been focused more on welding of bulk metallic glasses (BMG).
Bae, Pulsed Nd:YAG laser welding of Cu54Ni6Zr22Ti18 bulk metallic glass, Materials Science and Engineering A, 2007, 449-451, pp. 872–875
Zhu, Y.Chen, Ultrasonic Welding of Fe78Si9B13 Metallic Glass, Materials Science Forum, Vols 809-810, 2015, pp. 348-353

Acknowledgement The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (Nos. 50575045 and 50875050) and the Key Project of the Natural Science Foundation of Guangdong Province (No. 9251009001000009).
Xu: Chinese Materials Science Technology & Equipment (1) (2007), p.41-43 [2] J.
Zhang: Journal of University of Science and Technology of China (1) (2006), p.23-27 [4] E.
Wang: Journal of Harbin Institute of Technology Vol. 37(4) (2005), p.433-436 [6] K.
Shibayama: Journal of Intelligent Material Systems and Structures Vol. 13(7-8) (2002), p.405-408 [7] S.

Materials and methods The Study Area The study area, Taihu Lake (30°5'-32°8'N and 119°8'-121°55'E), located in the southern Jiangsu province and northern Zhejiang province, is the third largest freshwater lake in East China with the surface area of 2338 km2 and average depth of 1.9m[12].
[2] Haijun Wang and Yunmei Li, “The method of monitoring the spatial distributions of blue algae in meiliang bay using ASTER data,” Journal of Nanjing Normal University(Natural Science Edition), vol. 28, pp. 103-106, 2005
[3] Jingping Xu, Bo Zhang, Fang Li, Kaishan Song and Zongming Wang, “Detecting modes of cyanobacteria bloom using MODIS data in Lake Taihu,” Journal of Lake Sciences, vol. 20, ppl 191-195, 2008
[5] Hongtao Duan, Shouxuan Zhang and Yuanzhi Zhang, “Cyanobacteria bloom monitoring with remote sensing in Lake Taihu,” Journal of Lake Sciences, vol. 20, pp. 145-152, 2008
[6] Yun Chen and Jinfang Dai, “Extraction methods of cyanobacteria bloom in Lake Taihu based on RS data,” Journal of Lake Sciences, vol. 20, pp. 179-183, 2008

Zircon is common materials that used as filler, but the materials cost is quite high.
One of the materials that can be used to substitute refractory material is fused silica.
Tiedje, Foundry Coating Technology : A Review, Materials Science and Applications, 2011(August), 1143-1160. https://doi.org/10.4236/msa.2011.28155 [2] D.
Series: Materials Science and Engineering 196, (2017), 012045. doi:10.1088/1757-899X/196/1/012045 [4] Z.
Shan, Characterization of the refractory coating material used in vacuum assisted evaporative pattern casting process, Journal of Materials Processing Technology 9, (2009), 2699–2706. https://doi.org/10.1016/j.jmatprotec.2008.06.010 [12] H.E.

Study on the Rolling Process of 1J22 Soft Magnetic Alloy Chao Gana and Jie Zhub State Key Laboratory For Advanced Metals And Materials, University of Science and Technology Beijing, Beijing 100083, China aganchao1217@126.com, bjiezhu@ustb.edu.cn Keywords: 1J22 alloy, Rolling process, High saturation magnetization, Heat treatment.
The nearly stoichiometric Fe-Co alloy is well known as soft magnetic materials with high saturation magnetization and Curie temperature.
Chen, influence of heat treatment on magnetic properties of Fe-Co alloy, Electrical materials, 2 (2005) 25-25
Journal of Aeronautical Materials. 23(zl) (2003) 58-65 [7] P.P.
Journal of Materials Engineering, 8 (2010) 78-80.

Park: Journal of Mechanical Science and Technology Vol. 26 (2012), p. 2679-2684 [5] C.J.
Faglia: Advanced Materials Research Vol. 590 (2012), p. 399-404 [16] S.
Liu: Journal of Mechanical Science and Technology Vol. 22 (2008), p. 2328-2336 [19] Y.H.
Jung: Journal of Mechanical Science and Technology Vol. 25 (2011), p. 1429-1437 [24] J.
Anh: Journal of Mechanical Science and Technology Vol. 25 (2011), p. 2127-2136 [27] G.

MgAl/PbPc/Cu Organic Thin-film Diode Preparation and Gas-sensing Characteristics Analysis Jiabin Chena, Ping Yu, Yue Zhang, Yue Shan, Dongxing Wang (Department of Electronic Science and Technology, College of Applied Science, Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education Harbin University of Science and Technology, Heilongjiang Harbin 150080, China) ajiabinchen1224@163.com Keywords: lead phthalocyanine; thin-film diode; gas-sensing characteristics; NO2 Abstract.
Gas sensor with organic semiconductor material also attracts more and more attentions, it has an important position in detection of toxic and harmful gas [5].
Phthalocyanines is a kind of organic small molecular materials commonly used in OTFT active layer, it has become the main material in molecular semiconductor research [6].
It has high sensitivity and high selectivity to a specific kind of gas at room temperature and it’s easy to be modified at the same time making it a kind of organic gas-sensing material with broad application prospect and also a kind of organic gas-sensing material with a lot of practical value which has been studied a lot and developed rapidly.
K., Joo J.: Journal of Applied Physics, Vol. 100(2006), p. 064508 [4] Klauk H., Gundlach D.

Effect of Hydroxyapatite Nanoparticles of Different Concentrations on Rat Osteoblast Zhengli XU 1, Jiao SUN 1*, Changsheng Liu2, Jie Wei2 1 Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University Shanghai Biomaterials Research & Testing Center Shanghai Key Laboratory of Stomatology 2Key Laboratory for Ultrafine Materials of Ministry of Education Engineering Research Center for Biomedical Materials of Ministry of Education East China University of Science and Technology *Corresponding author：Jiaosun59@yahoo.com Key words: Hydroxyapatite Nanoparticle; Osteoblasts; Inhibiton; Apoptosis; Abstract：Nano-HAP (10-20nm) were obtained from East China University of Science and Technology.
Materials and Experimental procedures 2.1 Materials.
International Journal of Nanomedicine 2008:3(2) 133-149; [3] Stuart C McBain, Humphrey HP Yiu, Jon Dobson.
International Journal of Nanomedicine 2008:3(2) 169-180; [4] Liuyun J, Yubao L, Li Z.
Key Engineering Materials 2007: Vol 330-332: 287-290; [9] Yuan Yuan, Liu Chang-sheng.