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Experimental Procedure Raw Materials.
The electrical conductivity of cement-based materials is greatly dependent on the dispersing state of CF in cement.
Acknowledgement This work was supported by National Natural Science Foundation of China (50878170）and National Key Technology R&D Program (2008BAG10B01).
Tang: ACI Material Journal Vol. 100 (2003), p.469
Beaudoin: Journal of Material Science Vol. 31 (1996), p.4093.

The similar materials of rocks were made up of sand, cement, gypsum, sawdust and water.
The parameters of rocks and similar materials matching were shown in table 1.
[5] C.Y.Cui, M.D.Deng, N.G.Geng: Chinese Science Bulletin, Vol.38 (1993) No.6, p.538.
Ren, et al: Journal of CUMT(English Edition),Vol.15(2005) No.4, p.329
An: Journal of CUMT,Vol.35(2006) No.5, p.623

Since the reform and opening up, with the gradual opening of business restriction in the field of agricultural production materials and important agricultural products, supply and marketing cooperatives have gradually lost many goods franchise.
Firstly, closely around the agricultural production materials, subsistence materials, renewable resources, fireworks, and other agricultural and sideline products in this traditional industry, focus on restructuring and merger of related assets and business to improve the scale benefit.
Journal of Zhengzhou University of Light Industry (Social Science), 2010 11(3) 25-29
Journal of Zhejiang University (Humanities and Social Sciences), 2006 36(3) 117-124
Rural Economy and Science-Technology, 2011 22(5) 153-154

China 3The Key Lab of Textile Science and Technology, Ministry of Education, P.R.
Introduction As a kind of the nondestructive testing technique, acoustic emission (AE) testing has been extensively utilized in healthy evaluation of engineering materials [1-4].
In recent years, the gradually perfected method of wavelet analysis has been extensively applied to the identification, classification and extraction of non-stationary acoustic emission signals, for describing different damage characteristics of materials [5, 6].
Journal of Materials Engineering(In Chinese) Vol. 1 (2007), p. 56-64 [5] Gang Qi.
ASME Journal of Vibration and Acoustics Vol. 116(10) (1994), p. 409-416 [10] Mallat S.G.  

Accident Analysis The faulty equipment involved in the accident is a horizontal cold-chamber die-casting machine, which is a second-hand machine without nameplate or description material.
The results of mechanical capacity testing upon the sample according to GB/T228-2002 “Metallic Materials – Tensile Testing At Ambient Temperature” show that mechanical capacity ReL and Rm of the accumulator shell meets requirements in GB/T20663-2006 “Bladder Type Accumulators”, but break elongation fails to meet requirements in GB/T20663-2006 “Bladder Type Accumulators”.
Journal of Safety Science and Technology, 2002,8(6):120～124.
Bulletin of Science and Technology, 2010,26(4):606～610(622).
Journal of Safety Science and Technology, 2013,31(6):83～86.

Shid State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Research Institute of Building Science, Nanjing 211103, China a caijingshun@cnjsjk.cn, b chencuicui@cnjsjk.cn, c ljz@cnjsjk.cn, d shiliang@cnjsjk.cn Key words: migrating corrosion inhibitor; Cl-; reinforcing steel; linear polarization resistance; electrochemical impedance spectroscopy Abstract.
Soylev，M.Richadson: Construction and Building Materials, (22)2008, p. 609-622
Journal of Chinese ceramic society，(36)2008, p. 1494-1499
Journal of electrochemical society，(104)1957, p. 56-63
Construction and Building Materials，(10)1996，p. 315-328

Due to the important roles of the particles size and the purity on the properties of metal oxide materials, it is, therefore, very imperative to improve the purity and to synthesize the nanostructured CeO2 with appropriate size.
Among these different techniques developed for preparation of nanoparticle materials, the microemulsion method has received special attention due to its ability to synthesize well-dispersed, uniform size nanoparticles [18].
Experimental Materials and Instrumentation.
Liu: journal of rare earths Vol. 27(2009), p. 425 [6].
Takao et al.: Science, Vol. 288(2000), p. 2031 [8].

Introduction The world's first two-dimensional (2D) material graphene gained momentum for the realization of effective new devices in various fields due to its extraordinary electrical, mechanical and optical properties.
A numerical simulation yields a correct and meaningful result when it implements the accurate theoretical prediction for the material properties in EM simulation.
Graphene is the strongest and lightest material ever discovered.
References [1] Koppens F, Chang D and Abajo F 2011 Nano Lett. 11 3370 [2] Tamagnone M, Gómez-Díaz J, Mosig J and Perruisseau-Carrier J 2012 Journal of Applied Physics 112 114915 [3] Dash S, Patnaik A and Kaushik B 2019 IET Microwaves, Antennas & Propagation 13 7 [4] Jornet J and Akyildiz I 2013 IEEE Journal on Selected Areas in Communications 31 685 [5] Dash S and Patnaik A 2018 Plasmonics 13 2353 [6] Geim A and Novoselov K 2007 Nature Materials 6 183 [7] Gusynin V, Sharapov S and Carbotte J 2006 J.
Matter 19 026 222 [8] Fang X et. al. 2015 Physics Letters A 379 2245 [9] Carrasco E and Perruisseau-Carrier J 2013 IEEE Antennas and Wireless Propagation Letters 12 253 [10] Cabellos-Aparicio A, Llatser I, Alarcon E, Hsu A and Palacios T IEEE Trans. on Nanotechnology 14 390 [11] Dash S and Patnaik A 2019 Materials Today: Proceedings 18 1336 [12] Prakash S, Dash S and Patnaik A 2018 IEEE Indian Conference on Antennas and Propagation (Hyderabad: IEEE) [13] Xu Z, Dong X and Bornemann J 2014 IEEE Transactions on Terahertz Science and Technology 4 609 [14] Dash S and Patnaik A 2018 IEEE 24th National Conference on Communications (Hyderabad: IEEE) [15] Correas-Serrano D, Gomez-Diaz J, Alù A and Melcón A 2015 IEEE Transactions on Terahertz Science and Technology 5 951

The method of jacking pressure in digging special shaving is adopted to simulate the excavation surface soil movement, pressure grouting method to simulate the tail shield grouting process, grouting replacement layer and lining material parameters to simulate tail shield grouting and lining support .
Acknowledgements The author would like to thank the financial support by the National Natural Science Foundation of China (Grant No. 51274051).
E-mail:guodl386402@163.com References [1] Baotan Liu, Dezhang Lin: submitted to Journal of the underground space (1983)
[2] Xuan Han, Wenin Luo and Ning Li: submitted to Journal of Chinese Journal of Underground Space and Engineering (2009) [3] Xuan Han: submitted to Journal of Xian University of Technology (2006)
[4] Jun Sun: submitted to Journal of Underground Space (1999) [5] Chang Peng, etc: submitted to Journal of Chinese Journal of Rock Mechanics and Engineering (2008)

Preparation of Activated Carbons from Lignite for Electrochemical Capacitors by Microwave and Electrical Furnace Heating Baolin Xinga, Chuanxiang Zhangb, Lunjian Chenc, Guangxu Huangd School of Materials Science and Engineering, Henan Polytechnic University, Henan, Jiaozuo，454003, China abaolinxing@hpu.edu.cn, bzcx223@hpu.edu.cn, clunjianc@hpu.edu.cn, dhgx@hpu.edu.cn Keywords：Activated Carbon; Microwave Heating; Electrical Furnace Heating; Electrochemical Capacitor; Electrochemical Performance.
In physical activation, the raw materials is carbonized under an inert atmosphere and then activated at high temperature using either steam or carbon dioxide as the activating reagent.
Experimental Raw materials.
In addition, A small sudden potential drop (IR drop) is observed for all ACs electrolytes at the beginning of the discharge processes, indicating that those materials possess minimum internal resistance.
Yamada: Fuel, Vol. 79 (2000), p. 1461 [19] Xiaojun He, Jiangwei Lei and Yejing Geng: Journal of Physics and Chemistry of Solids, Vol. 70 (2009), p. 738 [20] Sait Yorgun, Naile Vural and Hakan Demiral: Microporous and Mesoporous Materials, Vol. 122 (2009), p. 189 [21] C.Portet, P.L.Taberna and P.Simon: Electrochimica Acta, Vol. 50 (2005), p. 4174 [22] Limin Li, Enhui Liu and Jian Li: Journal of Power Sources, Vol. 195 (2010), p. 1516