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The nanoparticles were synthesized using tetraethylorthosilicate as starting material and ethanol as solvent by sol-gel method under basic medium.
Materials and methods Materials.
Zhao, Nnaoporous Materials, in: Science and Engineering: An overview.
Srinivasa, Nanoparticle-crosslinked hydrogels as class of efficient materials for separation and ion exchange.
Dove Press Journal: Nano Sci App. 3 (2010) 65-76

Introduction Buckling and crushing analyses of thin-walled tubes have been widely performed and have attracted much attention in recent years particularly to analyzing in deformation characteristics and determining the energy absorbing efficiency of various thin-walled crashworthy components of different materials [1-3].
Piecewise linear plasticity isotropic case as the material model was considered for the analysis.
Hoppentad, Static and Dynarnic Axial Crushing of Square Thin-Walled Aluminium Extrusions, International Journal of Impact Engineering, 18(7) (1996), 949-968
Journal of Achievement in Materials and Manufacturing Engineering. 24(1) (2007)
Sekhon, Finite Element Analysis of Collapse of Metallic Tubes, Defence Science Journal, 58(1) (2008), 34-45

Steel fibers have an advantage over other fiber in their high elastic modulus and strong bond with the surrounding material.
The flexural toughness index of the material represents ability to absorb energy capacity.
References [1] Nemkumar Bethia and Jean-Francois Trottier, ACI Materials Journal, 1992 [2] P.
Najm, ACI Materials Journal, 2004 [3] B.
Mohanad Noor, ACI Journal, 1985 [4] ASTM C 39-12 standard, ASTM, 2012 [5] ASTM C 1609-10 standard, ASTM, 2010 [6] ASTM C 1018-97 standard, ASTM, 1997

(Science Press, China, 2006), p.26-37 (in Chinese)
Journal of Building Structures, Vol. 28 (2007) No.1, p.7-13.
ACI Materials Journal, Vol. 93 (1996) No.3, p.242-245
Construction and Building Materials, Vol. 21 (2007), p.2031-2040
Journal of Hydraulic Engineering, (1999) No.1, p.41-49.

Raw materials Concrete in this freeze-thaw cycle test is: (a) C35 double-doped mineral concrete（C35FA+SP）; (b)C50 double-doped mineral concrete（35LA）; (c)C35 two minerals and liquid preservative composition concrete（35SA）; (d) C35 two minerals and solid preservative composition concrete（C50FA+SP）.
Table 1 Mix proportion of double-doped mineralconcrete Concrete grade Raw material dosage（kg/m3） cement Fly ash Slag powder Sand Stone Water Water reducer Preservative C35FA+SP 209 95 76 731 1144 152 4.94 — 35LA 209 95 76 731 1144 152 — 5.7 35SA 209 95 76 731 1144 152 — 15.2 C50FA+SP 267 121 97 621 1153 150 6.30 — Raw materials of concrete include: (1) cement: ordinary portland cement P.O42.5R, density 2912g/m3; (2) fly ash: I high-quality fly ash, density 2059kg/m3; (3) slag powder: S95 mineral powder, density 2900kg/m3;(4) sand: river sand, Ⅱ area medium sand; fineness modulus 2.77, apparent density 2632kg/m3, bulk density 1630kg/m3 , mud content 1.6%; (5) coarse aggregate: 5~20mm diameter stone, apparent density 2719kg/m3, elongated and flaky particles content 2.83%, mud content 0.54%; (6) water: tap water, PH value 8.73; (7) water reducer: JX-GBNH1/1 type high range polycarboxylate water reducer, water reducing ration 25%~30%; (8)liquid preservative: high performance anti-corrosion
Acknowledgement We would like to thank National Natural Science Foundation (51008253) and Ministry of Railways scientific research and development project (2008G032-5) supports during the research.
References [1] Cui Shengai, Ye Yuezhong, FU Fei, Liu Zhifeng: Advanced Materials Research. 2010,Vol.150 (2010), p.542 [2] Nobuaki Otsuki, Shin-ichi Miyazato, Nathaniel B: ACI Materials Journal Vol.97 (6)(2000),p. 454 [3] Ye Jianxiong, Li Xiaozheng, Liao Jiaqing: Journal of Chongqing Jianzhu University Vol.27 (3)(2005),p.89 (In Chinese) [4] Xie Youjun, Liu Baoju, Liu Wei: Journal of Railway Science and Engineering Vol.1 (2)(2004),p.46 (In Chinese)

Material model.
Fig.7 Time History of Impact Force Curve Factors that may affect the impact force are in the following: vehicle quality, velocity; protection frame quality, structure, materials.
Acknowledgements This work was financially supported by National Natural Science Fundation of China (10872178), Natural Science Fundation of Shandong Province (ZR2009FM074, Y2008F56).
China Journal of Highway and Transport, 2009, 22(5): 61-66
Journal of South China University of Technology, 2003, 31(3): 64-67

Park: Journal of Alloys and Compounds Vol. 534 (2012), p. 70. ].
Journal of Magnetism and Magnetic Materials Vols. 358–359 (2014), p. 149. ].
Zhang: Materials Science and Engineering B Vol. 176 (7) (2011), p. 616. ] and polymeric precursors method [[] C.
Silva Júnior: Materials Research Vol. 8 (2) (2005), p. 221. ].
Ferreira: Advanced Materials Research Vol. 975 (2014), p. 36. ].

Study of combination algorithm in partitioning manufacture technology WANG Hui-feng, ZHANG Yong-jun, HAN Jin-tao, CHEN Ling School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083 Keyword: Model Partitioning; Feature-based; Combination algorithm; BAAG Abstract: Partitioning Manufacture Technology (PMT), which can get complex parts by simple processing has been developed to reduce tooling cost or increase machining efficiency.
Corresponding numbers of machining features is 6, partitioning area is 0.00395 and material utilization is 0.75522.
Journal of Shanghai Jiaotong University .2007, 41(9) : 1492-1496. 5.
Zhu Hu_, Kunwoo Lee, Concave edge-based part decomposition for hybrid rapid prototyping, International Journal of Machine Tools & Manufacture , 2005, 45: 35–42. 6.
Lee, Part decomposition for die pattern machining, Journal of Materials Processing Technology , 2002, 130–131 :599–607. 8.

Effect of annealing temperature on structural and electrical properties of bismuth ferrite thin film Minfang Zhang1,a, Jingsong Liu1,b 1State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, China azhangminfang623@163.com bferam@163.com Keywords: bismuth ferrite, sol-gel, electrical property Abstract.
Introduction Multiferroic materials have attracted much attention because two or three of the properties (ferroelectricity, ferromagnetism, and ferrroelasticity) occur in the same phase [1].
Iron nitrate nonahydrate [Fe(NO3)3·9H2O] and bismuth nitrate pentahydrate [Bi(NO3)3·5H2O] were used as raw materials.
The precursor solutions of bismuth and iron nitrate were prepared by adding the raw materials to 2-Methoxyethanol and citric acid under heating and stirring.
Zheng, et al: Science Vol. 299 (2003), p. 1719 [9] Taimur Ahmed, Andrei Vorobiev, Spartak Gevorgian: Thin Solid Films Vol. 520 (2012), p. 4470 [10] Hailei Zhang, Xinman Chen, Tao Wang: Journal of Alloys and Compounds Vol. 500 (2010), p. 46 [11] A.

Their extremely high strength-to-weight ratio, very high Young modulus and high flexibility and toughness, make them candidate materials for future reinforced polymer matrix composites [8, 9, 12].
Experimental Raw Materials.
Nakagawa, The effects of metal filler on the characteristics of casting resin for semi-metallic soft tools, Journal of Materials Processing Technology 134 (2003) 26-34
Pouzada, Application of alternative materials in hybrid mould cores, in: RPD 2006 - Building the future by innovation, Marinha Grande/Portugal, 2006
Krupa, Electro-conductive resins filled with graphite for casting applications, European Polymer Journal 40 (2004) 1417-1422