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Frequency dispersion less than 10 kHz mainly has a tie with induced polarization (IP) effect caused by electrochemistry, and IP frequency dispersion effect is speculated still to be observable if frequency is reduced to below 10 Hz according to the law of spectral induced polarization and the existing actual materials [16].
Journal of the University of Petroleum (Edition of Natural Science), 2003, 27(4):40~43
Journal of Daqing Petroleum Institute, 1994, 18(4):6~10
Journal of Zhejiang University (Science Edition), 2006, 33 (5): 584~587
Journal of Circuits and Systems, 2006, 11(1):143~146

Sadrnezhaad: Materials Letters Vol. 61 (2007), p. 4559
[8] Yang Liu, Yan Li, YuntaoWang, Lei Xie, Jie Zheng and Xingguo Li: Journal of Hazardous Materials Vol. 150 (2008), p. 153
Suslick: Science Vol. 247 (1990), p. 1439
Materials Processing and Properties TMS (2008), p. 497
Ramachandra Reddy.; Materials Chemistry and Physics 2002, 78, 239-245

A piston material must fulfil high requirements.
Fig. 5 Crack in material.
Reed, Micromechanisms of fatigue crack growth in cast aluminium piston alloys, International Journal of Fatigue, Volume 42, September 2012, pages 227-237
Reed, Analysis of fatigue crack initiation and S–N response of model cast aluminium piston alloys, Materials Science and Engineering: A, Volume 528, Issue 24, 15 September 2011, Pages 7331-7340
Reed, Micromechanisms of short fatigue crack growth in an Al–Si piston alloy, Materials Science and Engineering: A, Volume 612, 26 August 2014, Pages 302-309, ISSN 0921-5093

The paper analyses possibilities to use new materials having a high degree of adhesion for designing vacuum gripping elements with a view to increase the radial capacity and at the same time to preserve the compressed air consumption or the vacuum level.
So distributed loading brings marked changes in the contact area geometry (contact profile shape) owing to the elastomer friction, adhesive and material properties and the vacuum degree.
Advanced Materials, Volume 24, Issue 8, Jan 2012, pp. 1078-1083, Online ISSN: 1521-4095, http://onlinelibrary.wiley.com/doi/10.1002/adma.201104191/pdf [2] Sethi, S., Ge, L., Ci, L., Ajayan, P.
Zakopane: University of Science and Technology.
MM Science Journal, October 2011, Special Edition - 20th International Workshop on Robotics in Alpe-Adria-Danube Region (RAAD), October 5-7 2011, MKČR E 7645, www.mmscience.eu, p. 122-127.

Structure model material is polycarbonate, the corresponding fringe valueis and P-wave velocity is about.
Shanghai Science and Technology Press,1979
An experimental study of impact-induced failure events in homogeneous layered materials using dynamic photoelasticity and high-speed photography,40(2003):263-288 [7].
Materials and Design, 43 (2013): 447–453 [8].Wu Chunping, Zhong Dongwang.
Journal of Experimental Mechanics 26 No5. (2011):491-502

Preparation and characterization of PVDF modified ultrafiltration membrane for purification of Hg in water Xiuju Wang1,2, Xingjie Lu1, Weiying Xu1, Jiachen Zhu1 and Liguo Wang1,3,4* 1College of Resources and Environmental Sciences, University of Jinan, Jinan, China, 250022; 2Shandong Provincial Engineering Technology Research Centerfor Ecological Carbon Sink and Capture Utilization, 250022; 3College of Environmental Sciences and Technology, Shandong University, Jinan, China, 250022; 4Shandong Zhaojin Motian Co., Ltd., Zhaoyuan, China, 265400 *Corresponding Author, E-mail: chm_wanglg@ujn.edu.cn Key words: mercury ion, Polyvinylidene fluoride (PVDF), ultrafiltration membrane(UF) Abstract.
Materials and methods Materials.
However the continuous heating would cause the internal reaction of the 2-thiol benzothiazole material after arriving at a certain time, leading to its loss of characteristic functional groups used for the adsorption of mercury ion.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (21006100), Shandong Science and Technology Development Plan (2012SGGX10220), National Natural Science Foundation of Shandong Province (ZR2011BL009), Science and Technology Development Plan for University of Shandong Province (J11LB51), Special funds of innovative projects for Shandong Province postdoctoral (201103006).
Journal of Environmental Management. 92, 2011, 407-418.

Material and Methodology Materials.
The chemical compositions of the materials are shown in Table 1.
Pan mixer was used in the process of mixing all of the materials.
Water was poured in gradually until all the materials were uniformly mixed.
Sebastian, "Fly Ash Addition in Clayey Materials to Improve the Quality of Solid Bricks," Construction and Building Materials, pp. 1178-1184, 2009

Experimental Raw Materials.
Zhu: Advanced Materials Research, Vols. 152-153 (2010), p. 1176-1179
Zhu: Advanced Materials Research, Vols. 152-153 (2010), p. 1479-1482
Zhu: Journal of Yangzi River Science Institute, No.8 (2010), p. 66-69, in Chinese
[8] GB/T17671-1999: Test Method for Strength of Cement Mortar, China Building Materials Press, Beijing, 1999, in Chinese

It can save needed materials, reduce the production cycle, cut down the cost and create good conditions for weaving with strands The material processed has unique exquisite surface for weaving with strands it is light then and comfortable for wearing.
In the meantime, it offers the theoretical basic for processing quality product as well as developing upscale materials.
Li: Shan Dong Textile Science & Technology Vol.44 (2003) No. 1, p.22-25
Xin: Wool Textile Journal Vol.34 (2005) No. 1, p. 20-25
Jiang: Journal of Textile Research Vol.33 (2002) No. 4, p. 18-23. 2002

Microstructure and Mechanical Properties of 60Si2Mn Steel after Austenite Inverse Phase Transformation by Sub-temperature Quenching Anming LI 1,a, Mengjuan Hu 1 1School of Materials Science & Engineering.
Experimental material and methods 1.1 Experimental material The composition of experimental 60Si2Mn steel is (mass fraction, %): 0.59% C, 1.75% Si, 0.75% Mn, 0.32% Cr, 0.30% Ni, 0.0035% S, 0.032% P, and The balance is Fe. 1.2 Sample preparation The tensile sample is short sample with a dimension of d0 = 10 mm, L0 = 5d0, where d0 and L0 indicates the diameter and effective length of the tensile sample, respectively.
Journal of China Coal Society, 2008, 33(9): 1063-1066
Journal of Iron and Stell Research International, 2005, 12(5): 47-51
Steel materials and non-ferrous materials [M].