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The Application of Matrix Compression Algorithm In Network Education Platform For The User Security Authentication ZHENG NONG College of Education Science Guangxi University for Nationalities Nanning, China nongneal@163.com Keywords: Matrix compression algorithm; Network education platform; Safety certification Abstract.
References [1] ZHENG Ping,GU He-jin.The Development of Multimedia Network Teaching System Based on Matrix-compression Algorithm[J].JIANGXI SCIENCE.2005,23(6):734-736+746
[2] WANG Zhong-lei,ZhAO Guo-qun,MA Xin-wu.Compression storage Algorithm for 3D finite element stiffness matrix[J].Materials science and technology.2012,20(2):96-100+107
[3] Liu Ping.The Packed Memory of Special-matrix and Space-matrix and its algorithm Description[J].Journal of Guizhou University (NATURAL SCIENCE EDITION).1998,15(3):216-220
[4] WANG Min .Study on The Sparse Matrix Transpose Algorithms Based on The Compressed Storage[J].Science technology and Engineering.2010,10(4):1041-1044

In this paper, a novelRTD based on new material structure is proposed which could reach a relative high PVCR (peak-valley-current-ratio).
Layer Material Thickness[nm] Dope[cm-3] Emitter GaAs 100 1×1021 Barrier AlGaAsP 2 Well GaAs 2 Barrier AlGaAsP 2 Collector GaAs 100 1×1021 Substrate SI GaAs Thenset time parameter of the simulation to 300K, we got the simulation result as shown in Fig.2.
Conclusions In this paper, we proposed a novel resonant tunneling diode based on new material structure.
Acknowledgments  This work was supported by Natural Science Foundation of Jiangsu Province, China (BK2011337).
Henini: Resonant tunneling diode circuits using Pspice, Microelectronics journal, Vol. 34, p.741-745, May-Aug. (2003)

The coefficient of friction was measured for SPF aluminium grades AA7475 and AA5083, and steel and alumina based cement tool materials.
Above this threshold, the shear strength of the material offers lower resistance and contact friction is proportional to the flow strength of the material.
Wang: Materials Science Forum, Vols 304-306, 1999
Bradley: Metallurgical and Material Transactions A, Vol. 34A, 2003
Wang: Journal of Materials Processing Technology Vol 151 (2004), p. 196-202.

Molecular and Material Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga, Japan (Present address: Dept.
Adaptive Machine Systems, Osaka University) 2 Faculty of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga, Japan 3 Dept.
Introduction Grain boundary migration is the most important atomic-scale mechanism for recrystallization and grain growth in the metallic materials.
Abe: Journal of Japan Institute of Light Metals Vol. 51 (2001), p.119
Hatherly: Recrystallization and Related Annealing Phenomena (Elsevior Science Ltd, U.K. 1995 ), p. 188

An experimental research on optimization of trajectory bucket for spillway tunnel outlet at Sanliping Hydropower project LIU Xiao Fang1, a, WANG Dang Wei2, b and HUANG He Qing1, c 1Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A Datun Road, Chaoyang District, Beijing, 100101, China 2China Institute of Water Resources and Hydropower Research, 20 West Chegongzhuang Road, Haidian District, Beijing, 100048, China axiaofyfy@126.com, bwangdw17@126.com, chuanghq@igsnrr.ac.cn Keywords: trajectory bucket, energy dissipation; spillway tunnel; flood releasing; the outlet pattern; model test Abstract.
Granule and binder are the most important materials to simulate the erosion of the river bed and often used in the experiment, furthermore it should be cautious to choose the diameter of the bed load in the model to simulate the river deformation.
Then these material are lay on the model of the scale for 2.00m long and 0.40m thick below 289.00m to simulate the original river bed as a length of 180.00m with a thickness of 36.00m downstream of the trajectory bucket.
Fig.4 The scour pit of original design Fig.5 The scour pit of Opt.1 Fig.6 The scour pit of Opt.2 Fig.7 The scour pit of Opt.3 Acknowledgements This work was financially supported by National Natural Science Foundation of China (40788001).
(In Chinese) [4] Hangen Ni, Qingguo Wang, Yucong Liu, The application of unusual flaring piers to enhance energy dissipation of overflow discharge, Journal of Hydraulic Engineering.

TCE has been widely used in surface cleaning of metal materials, due to its low flammability, high evaporation rate and low reactivity.
International Journal of Environmental Science and Technology, 14 (2017) 1505-1512 [2] M.
Frontiers of Environmental Science & Engineering, 12 (2018) 15 [4] M.
Material Science Forum, 921 (2018) 48-53 [10] J.S.

Sound joints between dissimilar materials enable multi material design methodologies and low cost fabrication process to be employed [1, 2].
Pashby, Journal of Material Processing Technology, (2000), 99-1.66-71
[13] Chen Y.C.and Nakata K., Metallurgical and materials transactions A ,Vol.39A, (2008),1985- 1992
Ikeuchi, Zairyo Setsugo Kogaku No Kiso, Introduction to Joining Engineering of Materials, Sampo, (2002), 182-188
Nakata, Metallurgical and Materials Transactions A volume 39A, august 2008—1985.

It encouraged the conversion of materials for simpleprocesses of recycling rubber products and energy.
Title of Publication (to be inserted by the publisher) Experimental Section Materials and Methods.
Removal effect of organic materials.
It indicated that the wastewater of J Chemical Co. had a lots of non-biodegradable materials.
Generally, tire-recycling wastewater had lots of non-biodegradable and soluble organic materials.

The pipeline material is PPR, with the diameter from 20mm to 60mm.
Wall material is plexiglass, and thickness is 8 mm.
Journal of Petroleum Technology, 24(5): 593-598
Journal of Petroleum Technology, 15(4): 450-454
Journal of Petroleum Technology, 32(11): 1903-1910

That kind of alloying is different from traditionally casted alloys in the sense that no melting took place in the process, which leaves us with option of using immiscible materials in the process and experiencing new kinds of materials bonding outside the boundaries of phase diagrams.
Nature of material is found out by using frequent perform analysis in nanocomposite materials.
[3] Jinzhi Liao and Ming-Jen Tan A ‘A simple approach to prepare Al/CNT composite: Spread–Dispersion (SD) method’ Materials Letters, Vol.65, 2011, pp.2742–2744
[5] Senthil Saravanan M.S, Kumaresh Babu S.P and Sivaprasad K ‘Mechanically alloyed carbon nanotubes reinforced Nano crystalline AA 4032: Synthesis and Characterization’ Journal of Minerals & Materials Characterization & Engineering, Vol.9, 2010, pp.1027–1035
[9] Melissa Paradise and Tarun Goswami ‘Carbon nanotubes – Production and industrial applications’ Materials and Design, Vol.28, 2007, pp.1477–1489.