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At the same time, the zeolite 4A conforms to Langmuir and the Freundlich isotherm to the chromium ion's adsorption, the correlation coefficient respectively was 0.9997 and 0.9753, obtained the zeolite 4A to the chromium ion saturated adsorptive capacity was 50.25mg/L.Obviously, zeolite 4A as a new inorganic ions exchange material for the treatment of chromic wastewater, has the broad prospects for development.
Materials and Methods Reagents and materials CrCl3·6H2O, analytically pure, Shenyang Reagent Factory.
Kot; “Removal of mixed heavy metal ionsin wastewater by zeolite 4Aandresidualroducts from recycled coal flyash”,Journal of Hazardous Materials B,vol6,2005, pp.90-101 [7] Zhangshuai,Chenhao, “Fossilization beer waste yeast to Cr(Ⅵ) adsorption”, environment project journal, vol3.
Mar 2009, pp.490-492 [8] De yi Wu, Yan ming Sui, Sheng bing He, Xin ze Wang, Chunjie Li, Hainan Kong, “Removal of trivalent chromium from aqueous solution by zeolite synthesized from coal fly ash”, Journal of Hazardous Materials ,vol155,2008, pp.415-423 [9] Liang Fengjiao, Li Duosong, “The HDTMA modified powdered coal scolecite to bichromate adsorption,” the environmental science and the management, Jue 2008, pp.50-52 [10] Wu qi,Zhang ying ,Zhang qiong, “Organic modified Chengde zeolite processing chromic waste water”, Lanzhou University of Science and Technology journal, Jue 2008, pp.69-72 [11] Luo Daocheng, Yi Pinggui, Chen Anguo, “Porous nature zeolite pellet to pit water in Pb2+, Zn2+, Cu2+ adsorption performance research”, water treatment technology, Dec 2003, pp.338-340 [12] Yi Facheng, “Zeolite activation processing and to the lead, the cobalt adsorbability studies”,the mineral rock, vol 25.Sept 2005, pp.118-121 [13] Song Hefu, Xia Changbin, He Xiangzhu , “The natural zeolite
[15] Zhao Shiyong, “the pulverized coal ash synthesizes the zeolite 4A and the applied research [master's degree paper]”, Xi'an Scientific and technical university, 2005 [16] Ma Hongwen, Xiao ten wan, Tao Hong, “Contains Pb2+ using the 13X zeolite molecular sieve purification waste water experimental study”, the modern geology, Feb 2003, pp.157-162 [17] Ma Zhaoyang, Jin lanshu, “zeolite 4A elimination water Pb2+ research”, environment project journal, April 2010, pp.813-816 [18] Jiang yong, Li Guozhi, Tang Hongyan, Wei Xuefeng , “ In two kind of zeolite adsorption waste water phosphorus pollutant research”, Henan Scientific and technical university journal natural sciences version, vol 29,2008, pp.94-96 [19] Wang Jinming, Yi Facheng, “zeolite 4A to adsorption performance research radiation shield”, Jul 2006, pp.209-226 [20] Zhao Zhenguo, Wang Zhijie,“the zeolite 4A adsorbs chlorination tetradecyl pyridine from the peroxide solution”, College chemistry journal, April 1991, pp

Introduction The EPDM insulation material is one kind of elastic thermal protection materials based on EPDM rubber with mixing chopped fiber,SiO2,vulcanizator and flame retardant and molded by pressing.
Journal of Materials Science & Engineering, 2005, V32(2): 310-312
Journal of China Ordnance, 2010, v6(2)
Journal of China Ordnance, 2010, V6(4):225-233
Journal of China Ordnance, 2010,V33(5):586-593

Introduction High dielectric constant materials have been playing significant role in numerous technological applications, such as capacitors and memory devices [1].
It seems that the CDC has a tight link with the conductivity of the materials.
As a well investigated material, SrTiO3 (STO) exhibits interesting quantum paraelectric property.
Referring to the particular electronic structure of SrRuO3, our motivation is simple and direct: an appropriate doping of Ru into STO seems to possible to modulate the conductivity of STO in order to investigate the relationship between the dielectric relaxation and the materials conductivity, including the possible CDC effect.
As the above said, the OVs could be easily formed in grains for perovskite structure materials containing titanate due to the oxygen deficiency during the ceramic high temperature sinter process in air [16-17].

Neo: Journal of Materials Processing Technology Vol. 209 (2009) , p. 4459 [5] E.
Altitntas: Journal of Manufacturing Science and Engineering Vol. 129 (2007) p. 32 [12] J.H.
Shaw: IMSEC - International Conference on Manufacturing Science and Engineering, (2009) p. 333-341
Kapoor: Journal of Manufacturing Science and Engineering, Vol. 128 (2006) p. 474 [17] H.Li, X.
Cho : Transactions of the ASME, Journal of Manufacturing Science and Engineering Vol. 127, (2005), p. 1 [20] J.H.

Because of their high specific stiffness and strength, fiber reinforced plastics (FRP) are preferred lightweight materials.
However, there are still shortcomings for these materials concerning the insufficient energy absorption in case of failure and the limited opportunities available for the assembly with other components.
Yang, The mechanical behavior of GLARE laminates for aircraft structures, JOM – The Journal of The Minerals, Metals & Materials Society 57 (1) (2005) 72–79
In: Journal of Materials Processing Technology, No. 210, 2010, pp. 1008–1016, doi:10.1016/j.jmatprotec.2010.01.017
[5] Krishnakumar, S.: Fibre Metal Laminates - The Synthesis of Metals and Composites, Materials and Manufacturing Processes, 9 (1994) 2, 295–354

Introduction Sometimes we need use the mechanical property of hyper-elastic materials, such as water seal of high pressure gate.
Hyper-elastic materials’ constitutive relations is nonlinear, and the state of stress and strain is very complicated, so there are many blank spaces in basic and regular research of it.
This paper describes the theoretical research of the relations from several aspects such as the principle of nonlinear calculation, the mechanical models, the method of model experiment, and have provided a numerical analysis method to fit the relations base on BP neural network. 1 The Constitutive Relations of Hyper-elastic Materials According to mechanics theory of elasticity, elastic materials’ constitutive relations can be described by primary stress tensor and primary strain tensor [1].Hyper-elastic materials can be thought as materials that their modulus of elasticity increase when their stress are increasing.
Seal use rubber material that is a typical hyper-elastic material.
,The decision-making supporting system (DSS) theory method cases [M].Tsinghua University; Science Technique in Guangxi Publishing House, 1996:133-140.

In 50s of the 20th century, the scientists in former Soviet have begun the study on ecotype cementing material, Alkali-activated cementations materials, which are used to green ecological concrete.
For most engineering materials, elastic strains are always sufficiently small that the relationship between the stresses and strains is linear.
For orthotropic materials, 9 constants are needed.
Journal of Nanchang College, 2007, No. 4, p.120-122
Journal of Sichuan University (Engineering Science Edition), 2008, 40 (6), p.19-223

Materials and Methods Source of Plant Materials.
After 30 days of culture, the leaves of the sterile seedling with 2-3 true leaves were obtained as experimental materials.
Journal of Guangxi Agricultural Sciences, 2007, (01): 43-45.
Journal of Sichuan University, 2014, (01): 219-224.
Journal of Southern Agriculture, 2017, 48(09): 1653-1658.

Since nano materials have the fundamental characteristics of small-size effect, surface effect, quantum size effect and quantum tunneling effect et al, which cause that nano particles and nano bulk materials exhibit many unique physical and chemical properties followed with some abnormal phenomenon.
Among nano materials, perovskite compound oxide is one kind of very important materials because of its unique crystal structure, which decides that it exhibits many special physiochemical properties, can be widely used as superconducting material, ferroelectrics, piezoelectrics, thermistance and oxygen electrode et al, and occupies a high place in the area of material science and catalysis [2].
All the raw materials are analytically pure, obtained from Aladdin Industrial Corporation (Shanghai, China) and direct-used without further treated.
Materials Resarch Bulletin, 2007 (42): 203-212 [9] ZOU Wen-jing, HAN Hui, et al.
Materials Research Bulletin, 42 (2007): 203-212 [18] Jun Geng, Liping Jiang, et al.

Materials & Design, 2009. 30 (7), p. 2393-2403
[7] N.K., Gupta and Nagesh, International Journal of Mechanical Sciences, 2006. 48 (2), p. 210-223
Yang, P.D., Hodgson and C., Wen, Materials Science Forum, (2010), 654-656, p. 827-830
[11] Y., An, C., Wen, P.D., Hodgson and C., Yang (2012) Computational Materials Science, 55, p. 1-9
[13] C., Yang, Y., An, R., Greenfield, P.D., Hodgson (2013) Computer Methods in Materials Science, 13 (4), p. 425-435 [14] C., Yang, Y., An, M., Tort, and P.D., Hodgson, (2014), F Computational Materials Science, 81, p. 89-97.