Search results

The lower cost and higher reliability for LED source can be obtained through reasonable selection of materials and structure parameters of the LED lighting system.
Temperature distributions on packaging body are predicted under different materials and structure parameters.
For the optimization of LED packaging materials and structure parameters, the results show that the junction temperature can be decreased effectively by increasing the height of the heat sink, the width of the fin, and the thermal conductivity of the chip substrate and die attach materials.
The lower cost and higher reliability for LED source can be obtained through reasonable selection of materials and structure parameters of the LED lighting system.
[6] S.Moghaddam, M.Rada,A.Shooshtari,et al: Microelectronics Journal, Vol. 34 (2003) No. 3, pp. 223-230

[2] Guo zheng-ping,Ai hong.Asynchronous motor direct torque control simulation.Beijing:Beijing university of information science and technology,2012,27(3):1-1
[4] Yao dan,Wang bao-zhong.Asynchronous motor direct torque control.Jiangsu,jiangsu university of science and technology,2012,3:7-10
[5] Li yue,Xie da-qin.Three-phase ac motor direct torque control research.Journal of baoji college of arts and science(natural science edition),2013,2:45-48
[9] Nie xiang-ju,Miao xing-lei,Li ping.Asynchronous motor DTC of Matlab simulation.Journal of heilongjiang institute of engineering,2012,6,26(2):50-55
[10] Li xin-yu,Ma ming-zhi,Liao yan-pei.Induction motor direct torque control system.Electric power science and engineering,2013,7,29(7):27-32

Rheological Property of The Regenerable Polyhydroxy Alcohol Fracturing Fluid System Xiaorui Li1,a, Xiaojia Xue1,2,3,b, Huabo Fan2,3,c, Xiaojuan Lai1,d, Lei Wang1,e 1Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry， Ministry of Education，Shanxi University of Science & Technology, Xi'an Shaanxi, China 2Research Institute of Oil&Gas Technology, Changqing Oilfield Branch Company, PetroChina, Xi'an, Shaanxi, China 3National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas Fields, Xi'an, Shaanxi, China axxj_cq@petrochina.com.cn,blixr@sust.edu.cn,c282521251@qq.com,d3578466@163.com, e 05wanglei@sust.edu.cn Keywords: Polyhydroxy alcohol fracturing fluid; Crosslinking; Gel breaking; Regeneration; Rheological property Abstract.
Exprimental Materials Poly(vinyl alcohol) (Technica grade, supplied by Sinopec Sichuan Vinylon Works); organic borate crosslinker(Self designed) [7]; slowly releasing acids breaking agent (Self designed); sodium hydroxide (Analytically pure, provided by Zhengzhou Peny Chemical Reagent Co., Ltd.); experimental water is deionized water.
Acknowledgements This work was financially supported by the national natural science foundation of China (51103081), science and technology plan projects of education department of Shaanxi province (11JS023, 12JK0595) and academic leaders cultivation program of Shaanxi university of Science & technology(XSG2010012).
Journal of Xi an Shiyou University(Natural Science Edition), vol.24 (2009), p. 52 [4] X M Cai, G Liao and J Wang.
Journal of East China University of Science and Technology, vol.31 (2005), p. 553

Soft robots are robots made of soft materials and actuators.
This strategy--placing soft actuators into soft materials-- makes the soft robots very different with traditional rigid-linkage robots.
In our future work, we will optimize the structure parameters and materials to make the robot more robust and powerful.
In The 15th International Symposium on: Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring (pp. 692919-692919).
The International Journal of Robotics Research, 29(5), 585-597

Copper alloys with high strength and high conductivity are a serial of materials with excellent comprehensive performance.
Introduction Copper alloys with high strength and high conductivity are serial of structural functional materials with excellent physical properties and mechanical performance[1-3].
Many attempts of improving the strength and electrical conductivity of Cu-Cr-Zr alloy have been carried out [5-9].With the development of highly integrated and miniaturized chip, materials with excellent overall performance are greatly in demand.
B, Cui J: MATERIALS SCIENCE AND TECHNOLOGY, 2014, 30(3), p370-376 [2] T.
Coddet Christian: JOURNAL OF THERMAL SPRAY TECHNOLOGY, 2014.02, 23(3) p486-491 [13] S.G Mu, F.A.

Doherty, Thermo-Mechanical Processing of Metallic Materials, Pergamon materials series, Cambridge, Amsterdam, 2007
Was, Fundamentals of Radiation Materials Science, 1st ed., Springer Verlag, Berlin, 2007
Samajdar, Journal of Nuclear Materials, 467 (2015) 155
[17] Schwartz AJ, Mukul Kumar and Adams BL, Electron backscatter diffraction in materials science.
Pharr Journal of Materials Research 19(2004) 3

Experimental The starting materials are Sodium Hydroxide, Tantalum (V) Oxide, Isopropanol (Wako Pure Chem.
Yao, Materials Letter 58 (2004) 1194
Yanagisawa: Journal of Materials Science Letters Vol. 12 (1993), p. 1842
Lin: Materials Letters Vol. 34 (1998), p. 172
Yin: Material Science and Engineering B99 (2003), p. 506

Lenel, Resistance sintering under pressure, Journal of Metals, 7 (1) (1955) 158-167
Okazaki, Electro-discharge consolidation of particulate materials, Reviews in Particulate Materials, 2 (1994) 215-269
Lifland, Properties of titanium dental implants produced by electro-discharge compaction, Clinical Materials,17 (4) (1994) 203-209
Al-5AlN powders, Materials Science Forum, 514-516 (2006), 1225-1229
Cintas, Electrical resistivity of metal powder aggregates, Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 38 (6) (2007), 957-964

This damage will reduced material strength and affect the material life.
Because silicon carbide ceramics are brittle materials with high hardness, during the grinding process the abrasive scratch action makes the lateral cracks in the subsurface of scratch.
The maximum depth of sub-surface crack size directly affects the performance of the material.
Acknowledge The authors are grateful to financial support of the National Key Basic Research and Development Program of China (973 program, Grant No. 2011CB 013202) and the National Natural Science Foundation of China (Grant No. 51175126).
Journal of Inorganic Materials. 2004, 5: 456-462: [3] Liang Xiaohui.

Ko2,b 1Textile College, Tianjin Polytechnic University, China 2Department of Materials Engineering, the University of British Columbia, Canada a wangchunhong@tjpu.edu.cn, b frank.ko@ubc.ca Keywords: Nanoclay, Polylactide(PLA), Nanocomposite, Mechanical property, Abstract.
It is reported that PLA has the potential to be used in the applications such as packaging, composite materials, textiles, solar cell substrate, et al. [3-4].
References [1] Rui Wang , Chunhong Wang: Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica Vol. 26(2009), p. 43-47 [2] Jong-Whan Rhim, Seok-In Hong, Chang-Sik Ha: LWT-Food Science and Technology Vol. 42(2009), p. 612-617 [3] Q.
Xanthos: Polymer Degradation and Stability Vol. 93(2008), p. 1450-1459 [4] Marianne Strange, David Plackett, Martin Kaasgaard: Solar Energy Materials & Solar Cells Vol. 92(2008), p. 805-813 [5] K.Van de Velde, P.
Stevens, et al.: Journal of Applied Polymer Science Vol. 105(2007), p. 1668-1678