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Buffer/backfill material used in the construction of an underground repository is one of the important aspects, and the bentonite sand mixed buffer/backfill materials have become popular around the world.
Applied Clay Science，2009, (42)：575-582
Journal of ggeotechnicail and geoenvironmental engineering，2004, 30(2)： 205-209
Chinese Journal of Rock Mechanics and Engineering，2011, 30(2)：382-390
Study on clay-based materials for the repository[J].

The research on optimization of electrostatic field for high voltage electrostatic spinning machine Changjie Liu1,a, Jing Zhang 2,b and Ye Dai3,c 1Physics research section, Aviation University of Airforce , Changchun 130022, China 2Computer research section, Aviation University of Airforce , Changchun 130022, China 3School of Mechanical & Power Engineering, Harbin University of Science and Technology, Harbin 150080, China aliuchangjie@163.com, bjing_0714@tom.com, cdaiye312@163.com Key words: electrostatic spinning technology; optimization; electric field analysis.
When solvent has be solidificated, Fibrous material is get.
Journal of Materials . 2009

Microstructure of the bimetal composite materials showed well combination as figure 2.
The two materials were not mixed, and interface presented good metallurgical combination. 4.
Wu: School of Material Science and Engineering Zhengzhou University. 5(2006)
Ding: Transactions Materials Treatment. 3(2003) 61-65
Wang: Journal of Materials Science and Technology. 22(2006) 629-633

[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

Also, material's burnishing mechanism is discussed, and the process parameters are optimized.
Theoretical density of NbC is 7.85g/cm3, and is close to the density of matrix material.
Acknowledgements: The work is supported by Key Project of National Natural Science Foundation of China (50135020) and the Open Foundation of Guangdong Province Key Laboratory of Metal New Material (2008001).
Xia, et al.: Material Science Forum Vol.471-472(2004), p. 790-794
[7] L.J.Hu, R.R.Hu: Journal of Xiangtan University Vol.16 (1994), P. 98-103.

For indirect drying technology, the drying materials and drying medium does not directly contact.
Heat passed to the wet material through the heat transfer solid[3].
For direct drying technology, the material and high temperature drying medium contacted directly.
Heat passed to the wet material by the way of convection，conduction and radiation.
References [1] Liu Yueping: Shanxi Coking Coal Science & Technology Vol.7 (2008), p.41-43 [2] Sun Yinhui,Wet Hongwu: Clean Coal Technology Vol.15 (2009), p.26-28 [3] Meng Tianjun,Zhao Jinkuang,Jia Junlin: Journal of Green Science and Technology Vol.3(2012), p.180-181 [4] Li Hongqin: Coal Technology Vol.22(2003), p.180-180 [5] Jia Guanglin: coal processing and comprehensive utilization Vol.4(1996), p.58-61

Materials and methods Reagents.
Materials.
Plant material.
Plant material was collected on December 18, 2008 in Weifang City, China.
Min: Chinese Journal of Biochemical Pharmaceutics Vol. 4 (2000), p. 211 (In Chinese)

Material The chemical composition of P92(9Cr2W) steel used in the experiments is shown in Table 1.
Microstructures of base and weld metal were similar, being tempered martensitic structure and the fatigue crack growth rates of these materials were almost similar and showed a relatively low behavior. 2.
Materials Science Engineering A, 299 (2001) p.16 2.
Journal of nuclear materials, 299 (2001) p132 5.
Material Science Engineering A, 131 (1991) p.187 7.

Experiments 2.1 Materials Hydrochloric acid(AR), sodium hydroxide(AR),and ammonium persulfate were obtained from Tianjin Fengchuan Chemical Reagent Science and Technology Co.Ltd.
Acknowledgement This work was financially supported by the National Natural Science Foundation of China (51103101) and China Postdoctoral Science Foundation (20110490785 and 2011M500525).
Ma: Food Science Vol. 28(2007), p. 47(in Chinese) [3] X.Y.
Lewin: Journal of Polymer Science: Part A Vol.1(1963), p. 2601 [12] D.
Hou, Advanced materials research,Vol.221(2011),p.72 [15] W.Y.Wang, X.Jin, Advanced materials research, Vol. 287-290(2011),p.2648