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Ma, ”Friction stir welding and processing” Materials Science and Engineering, R 50, 2005, pp.1-78 [2] T.J.
Lienert, 2007, “Microstructure and Mechanical Properties of Friction Stir Welded Titanium Alloys,” Friction Stir Welding and Processing, ASM International, Materials Park, OH, Ch. 7, pp. 123-154
Trapp, Characterization of Superplastically Formed Friction Stir Weld in Titanium 6Al-4V: Preliminary Results, ASM Journal of Materials Engineering and Performance, Vol. 17, No 2, 2008, pp.187-192
Ramulu, 2009, “Effect of Process Conditions on Superplastic Forming Behavior in Titanium 6Al-4V Friction Stir Welds,” Science and Technology of Welding and Joining, 2009.
Trapp," Tensile Properties of Friction Stir welded Ti-6AL-4V Butt Joints", Materials & Design, Vol. 30, 2010, pp.3056-306 [9] M.

As a reinforced materials of modified concrete, the natural organic fiber is one of the hottest research fields in China at present.
In the south of China, especially in Guangxi province, where is rich in sisal plants, they can use local materials conveniently.
Admixture: TH-W5 water reducing admixture, produced by Hengda Materials Co., LTD, can reduce water consumption about 15%~25%.
Concrete is a kind of heterogeneous material, because of its internal hydration reaction, the volume of materials shrink in general, therefore the shrinkage of different materials produce different stress, which cause many tiny cracks of concrete to appear.
References [1] Rongxi Shen,Qi Cui and Qinghai Li:New fiber reinforced cement composite materials in chinese(China building materials industry press,China 2004) [2] Huiming Bao and Feng Qin:Renminchangjiang Vol.39(2008),p.88 [3] Guofan Zhao:Highe-level theory of reinforced concrete structure in chinese (Mechanical industry press,China 2005) [4] Tianyou Fan:Fracture theoretical basis in chinese (Science press,China 2003) [5] Yinhua Ma:Journal of Chongqing Jiaotong University Vol.26(2007),p.85

Consequently, these materials are weak and easy to break under tensile stresses.
Therefore, when the brittle materials are employed for structural components, care has to be taken to avoid tensile stress.
Although brittle materials can endure a large compression, cracks may propagate when excessive compression is applied.
When a considerable compression is applied to brittle materials, the mode-I wing crack growth appears almost parallel to the principal compression.
[8] Nisitani, H., Journal of JSME, Vol., No.580, pp.627, 1967.

., Ltd); Vincristine Sulfate for Injection(Zhejiang HISUN); RPMI 1640 medium, pancreatin, dimethyl and sulfoxide(USA Gibco Company), Fetal bovine serum(Hangzhou Sijiqing biological engineering materials Co., Ltd); methyl thiazolyl tetrazolium(MTT), propidium iodide (PI), Triton-X-100 (Sigma); Giemsa dye(Shanghai Xinran Biological Technology Co.
Human gastric cancer SCG-7901 cells were stored and cultured by institute of materia medica of Research Center on Life Sciences and Environmental Sciences, Harbin University of Commerce.
Acknowledgements The work was supported by National Natural Science Funds of China (No.81102858), China Postdoctoral Science Foundation funded project (No.2013M531060), the Research Fund for the Doctoral Program of Higher Education (No.20102332120003), the Key Project of Chinese Ministry of Education (No.210059), Natural Science Foundation of Heilongjiang Province (No.
Journal of Harbin University of Commerce (Natural Sciences Edition).

Materials and methods Chemicals All chemicals were analytical grade.
Acknowledgments This work supported by National Natural Science Foundation of China (NO. 51108145), Science and Technology Key Research of Educational Committee of Heilongjiang Province (12521z010), National Major Science and Technology Program-water Body Pollution Control and Remediation (NO. 2012ZX07301001), National Pre-Research Project of Harbin Normal University.
Environmental Science and Technology, 2007, 41(24): 8262-8267 [3] L.
Journal of Zhejiang University.
Agriculture and Life Sciences, 2010.36, p. 521-527 [20] Huang, H.W., B.V.

A STUDY OF N-ISOPROPYL ACRYLAMIDE (NIPAM)-BASED POLYMER GEL DOSIMETER BY USING RAMAN SPECTROSCOPY Mohd Zulfadli Adenan1,2,a, Mansor Ahmad3,b, Noramaliza Mohd Noor4,c, Elias Saion1,d 1,2Department of Physics, Faculty of Science, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia 2Department of Medical Imaging, Universiti Teknologi MARA, Puncak Alam Campus, 42300 Kuala Selangor, Selangor, Malaysia 3Department of Chemistry, Faculty of Science, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia 4Department of Imaging, Faculty of Medicine and Health Science, University Putra Malaysia, 43400 UPM Serdang Selangor, Malaysia aibnu_soleh83@yahoo.com, bmansorahmad@science.upm.edu.my, cnoramaliza@upm.edu.my delias@science.upm.edu.my Keywords: Polymer gel, Radiation dosimeter, Radiation therapy, Raman spectroscopy Abstract: Polymer gel is a kind of radiation dosimetry system that has been applied widely in radiotherapy treatment.
Materials and methods a) NIPAM polymer gel preparation for Raman spectroscopy analysis Polymer gel dosimeters were manufactured under normal atmospheric conditions in the laboratory without using of a glove box based on Fong et. al. [5, 6] and basically following the method experimented by Senden et. al. [1, 7].
Then, the polymer gel dosimeters were irradiated with gamma rays produced by Cobalt-60 (Co60) element from Gamma Cell Instrument, model 220 Excel Irradiator (MDS Nordion, Ottawa, ON, Canada) (Faculty of Nuclear Science, National University of Malaysia).
Journal of Radioanalytical and Nuclear Chemistry, 2011. 290(1): p. 141-148

[3] K.Mogi.Study of the elastic shocks caused by the fracture of heterogeneous materials and its relation to earthquake phenomena,Bull[J].Earthquake Res.Inst,1962:125-173
A study on microseismic monitoring of rockburst in coal mine[J].Chinese Journal of Geophysics,2006,49(5):1511–1516.
Chinese Journal of Rock Mechanics and Engineering,2007,26(1):102–107.
[12] Fuxing Jiang,Cunwen Wang,Shuhua Yang,et al.Microseismic monitoring and measuring technology for pumping pressure,coal and gas outburst and water inrush[J].Coal Science Technology,2007,35(1):26–29.
[17] Yishan Pan,Yangfeng Zhao,Jin Ma.Discussion on rockburst influenced by regional stress field in China[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(16):2847-2853.

The material of the anode rods is the same as of the reinforcement of concrete structure.
It is also helpful to accumulate valuable experience and materials for scientific research of relevant areas.
Beijing, Science Press, (2002) (In Chinese) [2] B.S.
Chen: Journal of civil engineering, Vol. 39(6)(2006), p.72, (In Chinese) [3] J.
Jin: China science and technology, Vol.9, (2010), p.53.

Finite Element Analysis and Optimization of Electric Field Structure of New-type Electrospinning Machine Hongwei Duan1, a, Jingang Jiang2,b 1School of Material Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China 2Intelligent Machine Institute, Harbin University of Science and Technology, Harbin, 150080, China aduanhw@hrbust.edu.cn, bjiangjingang1982@163.com Keywords: Electrospinning, Optimization, Electric field analysis, ANSYS Abstract.
This not only pollute experimental environment, but also waste experimental material and reduce the efficiency of electrospinning.
Set up of model and material property.
Journal of Applied physics, 87, 9(2000), pp. 4531-4547

Preparation and tribological properties of Nb1-xTixSe2 micro/nanoparticles Jiaqing Liang1,a, Changsheng Li1,b*, Hua Tang1,c, Yi Zhang1, Wenjing Li1, Zhili Hu1, Fen Wang1 1 School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, PR China aliangjiaqing1988@163.com,blichangsheng@ujs.edu.cn, ctanghua@ujs.edu.cn Keywords: Micro/nanoparticles, Solid-state reaction, Nb1-xTixSe2, Tribological properties.
Over the past several years, certain MX2 materials(TaS2, TaSe2, NbSe2 etc.) have been studied extensively in bulk because they exhibit interesting temperature-dependent electronic instabilities, such as metal to superconducting or charge density wave (CDW) transitions at low temperature.
Acknowledgements The authors gratefully acknowledge the financial support from the National Nature Science Foundation of China (Grant No.50471051), Jiangsu provincial science and technology enterprises "innovation fund" ( BC2010021), Open Project of Key Laboratory of Tribology of Jiangsu Province (Kjsmcx2011002, kjsmcx1005) and Scientific Research Foundation for Distinguished Scholars, Jiangsu University (Project ID:09JDG009).
Weber: Vienna University of Technology, Atominstitut, 1020 Vienna, Austria. 2010 [10] V Sirenko, V Ibulaev, M Shvedun1 and V Eremenko: Journal of Physics: Conference Series Vol.150 (2009), p. 042186 [11] A.