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Due to the great developments in modern science and technology, the application field of porous metal materials has been largely extended, and the demand for materials has also been increased.
With the development of science & technology and the improvement on the demand for industrial technique, membrane materials and its preparing technology has been rapidly advanced.
Catalytic porous materials are special functional materials with active elements distributed in the porous material[4].
This makes powder metallurgical technology one of the most rapidly developed branches in the field of material science and engineering.
The Chinese Journal of Nonferrous Metals 2004，Vol.14 No.2：320-322 [5] L.V.

Corrosion Behavior of Zn and Cu as Grounding Material in Shanbei Soil Solution Sen Wang1, a, Shujun Gao2, Zhizhong Li1, Yabo Hu2, Hongliang Ji1, Chaofang Dong2 and Xiaogang Li2 1Power Network Grounding Engineering Technology Lab of State Grid Corporation, Shaanxi Electric Power Research Institute, Shaanxi Xi’an 710054, China 2Corrosion and Protection Center, Institute of Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China awangsen01@yahoo.com.cn Keywords: Grounding material, Zn, Cu, Galvanic corrosion, Stray current.
The corrosion behavior of typical grounding materials Zn and Cu in Shanbei soil solution was studied by immersion test technique, galvanic corrosion current measurement and simulated stray current test.
Experiment The materials used here were pure Zn and Cu.
Conclusions The corrosion behavior of Zn and Cu act as the typical grounding materials was studied in this work, the main conclusions can be drawn as below: (1) The corrosion rate of Zn was higher than Cu in Shanbei soil solution.
Acknowledgments This work is supported by the 2009 Science and Technology Project from State Grid Corporation of China: research on material, structure and anti-corrosion technique for grounding grid.

Organic materials (cable particularly) aging has an adverse effect on the safety of production situations, and it is unscientific to replace organic materials blindly.
A live evaluation system of organic materials aging was developed in present paper.
Another method is based on physical detection, ssuch as elongation at break (EAB) and compressive modulus of cable materials [4].
Compressive modulus of organic materials is the ratio of force to distance.
(5) It can evaluate not only cable but also other organic materials

Analysis of application of new photochromic materials in design of kindergarten Bo Xu 1, a , weiping Hu 2, b 1 Art of design, Faculity of Art and Communication, Kunming University of Science and Technology 2 Faculity of Art and Communication, Kunming University of Science and Technology axubo_10@sina.com, byncaid@sina.com, Keywords: Materials; design; smart materials; photochromic Abstract: New smart materials have taken the lead position in modern design, photochromic materials with base of polymer gradually step into the range of new decorative materials in design of kindergarten, abundant color is the intuitional demonstration to attract children, however, if the color doesn’t change at all for a long term, children will be bored in both aesthetics and vision, such new photochromic materials bring a new breakthrough for design of kindergarten.
With the rapid development of science and technology, humans have been able to display and utilize colors by various means in which the research and application of smart materials bring the new colorful life for us.
Guangdong building materials. 2007 [3] YongMing Dao, Inorganic photoluminescence materials and application [M].Chemical industry press. 2005 [4] YongMing Dao, Inorganic photoluminescence materials and application Ⅱ[M].
Chemical education. 2009 (4) [6] Ying Wang, Jian li, KaLi Gu,Intelligent color coating [J].China journal of surface engineering, 2007, 20 (3) : 9-14
Materials review, 005，19，(10)：3l一35.

Fig. 1 Representative volume element for granular material Microstructure Characterization of Granular Materials The microstructure of granular materials is generally characterized by coordination number, contact normal, contact force and contact displacement, as shown in Fig. 1.
Deformation of granular materials is accompanied by significant changes in the magnitudes of contact forces.
Various interpretations of strain tensor for granular materials have been proposed based on different assumptions.
Fabric tensor in granular materials [C].
In IUTAM Conference on Deformation and Failure of Granular Materials.

Removed material Applied stress Fig.1 Schematic drawing of material removal in a block of 200x100x100mm3.
Fig.2 Zoom at the bottom of the groove used by Pedersen et al. [2] 1.3 Savaria-Bridier-Bocher theory [3] Savaria et al. published in June 2012 in the International Journal of Mechanical Sciences and developed a theory to take into account the stress relaxation in a tube.
For all the others depths d, corrected stress σcd are calculated using measured stresses σmd for all the previous materials removed.
Finite element calculations for correction of residual stress profiles of coated and uncoated materials measured by X-ray diffraction."
NDT Int 1989;22:347-52 [3] Savaria V., Bridier F. and Bocher, P., "Computational quantification and correction of the errors induced by layer removal for subsurface residual stress measurements", International Journal of Mechanical Sciences, Volume 64 (1) – Nov 1, 2012

Acknowledgement This item is subsidized by the Nature Science Foundation in China.
Cen: ASME, Journal of Tribology.
Li: Journal of Mechanical Transmission.
Xia and S.Q.Cen: Advanced Materials Research.
CEN: Journal of Machine Design.

The biomass material of stem granule can be used as raw material in cigarette tobacco blends, and play an important role in improving the filling power of cut tobacco, reducing the harmful components of cigarettes and the consumption of raw materials [5,6].
Dielectric properties of agricultural materials describe the interaction of electromagnetic energy with the materials[8].
Materials and methods Materials.
Journal of Food Engineering, 89 (2008),p.435–440 [9] X.H.
Journal of Food Engineering,26(1995),p.409～429

Acknowledgements This study was supported by Fujian Provincial Department of Science and Technology (Research Project,2019H6024) References [1] Velauthapillai D,Rasukkannu M, and Vajeeston P 2018 Materials Letters. 218 233-236
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Mechanical properties of kenaf fiber /PE composite materials and their microstructure.
And thus mechanical properties of kenaf fiber/PE composite materials were improved effectively.
[8] Shurong Wang, Qian Liu, Zhongyang Luo et.al:Journal of Zhejiang University(Engineering Science) Vol. 40 (2006), p. 1155-1157,in Chinese
[9] Qiuhong Mou, Chun Wei and Jinghong:Journal of Guilin Institute Technology Vol. 24 (2004), p. 467-473,in Chinese
[12] Hong Cai, Chun Wei, Weifeng Xiong et.al:Insulating Materials Vol. 37(2004), p. 4-7