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Single cell box girder is widely used in modern bridges especially because it has the advantages of excellent integrality, less material usage and beautiful modeling [1-3].
The thickness of diaphragm and side wall is 0.2m. the dynamic elastic modulus of materials, E=4.2×107kN/m2.
Material density, g =25kN/m3.
Acknowledgement This work is supported by National Natural Science Fund Project of China (50378040) and Scientific Research Fund Project of Zhongkai Univ. of Agriculture and Engineering (G3082927).
Moon et al: Thin-Walled Structures Vol. 47 (2009), p. 21 [8] Jiho Moon, Jongwon Yi, Byung H.Choi and Hak-Eun Lee: Journal of Constructional Steel Research Vol. 65 (2009), p.1198 [9] Jongwon Yi, Heungbae Gil, Kwangsoo Youm and Hakeun Lee: Engineering Structures Vol. 30 (2008), p.1659 [10] Xiaoyu Liu and Tongling Sun: Journal of Chongqing Jiaotong University (Natural Science) Vol. 26(5) (2007), p. 9 (In Chinese) [11] Shenghua Li, Zhixiang Zhou and Xin Zhang: Journal of Chongqing Jiaotong University (Natural Science) Vol. 27(4) (2007), p. 3 (In Chinese ) [12] Jun Lian, Lei Jia, Xianwu Hao and at el: Communications Standardization Vol. (11) (2007), p. 202 (In Chinese) [13] Youfa Yang, Lifu Wang and Wen Huang: Steel Construction Vol. 20(4) (2005), p. 36 (In Chinese ) [14] Yingwu Yang, Zongxue Yin and Baisheng Wang: Central South Highway Engineering Vol. 30(2) (2005), p. 52 (In Chinese ) [15] Kyungsik Kim and ChaiH.

Relaxation Behaviors of Polystyrene during Physical Aging Yao Liu1, a, Congde Qiao1, b, Jinshui Yao1, c,* and Wenke Yang1,d 1Shandong Provincial Key Laboratory Of processing and testing technology of glass and functional ceramics. 2School of Materials Science and Engineering, Shandong Polytechnic University, Jinan 250353, P.R.
Consequently, the research of relaxation behaviors of the glassy state during the physical aging process is very important in determining the long-term performances of the material.
Experimental Section Materials.
[2] I.M.Hodge; Journal of Non-crystalline Solids, Vol 169 (1994) No.3, p.211
[4] A.J.Kovacs, J.M.Hutchinson, A.R.Ramos; Journal of Polymer Science: Polymer Physics Edition, Vol 17 (1979) No.7, p.1097

Materials and methods Materials Papain (EC 3.4.22.2) from Carica papava were purchased from Shanghai aladdin-reagent Inc.
Acknowledgments This work was financially supported by Natural Science Foundation Project (cstc2012jjA20011) of CQ CSTC; National Training Programs of Innovation and Entrepreneurship for Undergraduates (201310635048); and the seventh Undergraduate Science and Technology Innovation Fund of Southwest University.
Journal of Biological Chemistry 270(18), 10838-10846
Journal of Magnetism and Magnetic Materials 201(1), 427-430

Acknowledgement This paper was elaborated with the financial support of the Czech Science Foundation project GA13-18870S and European Union's "Operational Programme Research and Development for Innovations", No.
CZ.1.05/2.1.00/03.0097, as an activity of the regional Centre AdMaS "Advanced Materials, Structures and Technologies".
International Journal of Materials and Product Technology. 2011. 42(3/4). p. 209 - 218.
Materials Science Research International. 1998. 4 (3). p. 131 – 140.
Applied Mechanics and Materials. 2013. 2013(248). p. 370 - 378.

Experimental Materials and chemicals.
Mulcahy, Recent developments in forward osmosis: Opportunities and challenges, Journal of Membrane Science 396 (2012) 1-21
Nijmeijer, Long term physical and chemical stability of polyelectrolyte multilayer membranes, Journal of Membrane Science 489 (2015) 153-159
Childress, Selection of inorganic-based draw solutions for forward osmosis applications, Journal of Membrane Science 364(1-2) (2010) 233-241
Tang, Influence of the properties of layer-by-layer active layers on forward osmosis performance, Journal of Membrane Science (423-424) (2012) 536-542

There is a strong rivalry between well-known materials such as aluminum, steel and plastic, however technical progress features new materials such as carbon fiber laminates (CFK).
The Minerals, Metals & Materials Society.
Journal of Materials Processing Technology 148.
Journal of Materials Processing Technology 162–163.
[11] A Penlington et al, Materials Science Forum 794-796, (2014), 605-610

Recent bioplastics use biodegradable materials mostly from starch [2]–[8].
Materials and Methods Materials.
Patriana, “Journal of Reinforced Plastics and Composites Bioplastic based on starch and cellulose nanocrystals from rice straw Bioplastic based on starch and cellulose nanocrystals from rice straw,” Journal of Reinforced Plastics and Composites, 2014
Amri et al., “Properties enhancement of cassava starch based bioplastics with addition of graphene oxide,” in IOP Conference Series: Materials Science and Engineering, Institute of Physics Publishing, Apr. 2018. doi: 10.1088/1757-899X/345/1/012025
Rahman, “Conductive composites of tapioca based bioplastic and electrochemical-mechanical liquid exfoliation (emle) graphene,” in IOP Conference Series: Materials Science and Engineering, Institute of Physics Publishing, Apr. 2018. doi: 10.1088/1757-899X/345/1/012026

Introduction The cement-based materials mixed with low elastic modulus polypropylene fiber are new composite building materials which have been developed rapidly and used widely in the transportation engineering in recent years.
The drop hammer setup is a widely used technique to research shock resistance of cement-based materials.
Experiment program Materials.
Acknowledgements We thank Jiangsu Bote New materials co.
Beijing: Science Press, 2003

Because the titanium dioxide owns the chemical stability, the thermal stability, wear resistance as well as the catalytic property, it can be widely applied to such domains as cosmetics, sensing materials, absorbent materials, coating and so on[2,3].
Siegel: Nanostructured Materials.
[8] Xiaojie Li, Tao Chen, Ruiyong Li, Zhanlei Wang and Yandong Qu: Rear Metal Materials and Engineering Vol.35(11, 2006 ), p.1788-1791, in Chinese
[12] Xiaojie Li, Tao Chen, Yueju Zhang and Yandong Qu: Journal of Functional Materials Vol.20 (2,2005), p.122-126, in Chinese
[13] Lian Gao: Photocatalytic Nano-Materials and Applications (Chemical Industry Press, Beijing, 2002), in Chinese

Table 1 Mix proportion of ECC-M45 adopted in this paper (mass ratio) Mixture constituents Cement （C） Fly ash （FA） Fine sand （S） Water （W） High efficiency water reducer （HEWR） Fiber (F) The amount per m3 /kg 583 700 467 298 23 26 Raw Materials Used in the Experiment.
Acknowledgements This work was financially supported by Gansu Higher Education Basic Scientific Research Program (0904ZTB152) and Gansu Construction Science and Technology Key Project (JK2011-18).
Li: Journal of the Chinese Ceramic Society.
Li: Journal of Advanced Concrete Technology.
Li: ASCE Journal of Materials in Civil Engineering, Vol. 6(3) (1994), p. 390-406 [9] M.