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Magneto rheological fluids are an intelligent rheological materials with peculiar performance [1-2].
Journal of Mechanical Engineering, vol.46 (2010), p. 177 [2] Gopalswamy S and Jones G.L.
Journal of Materials Processing Technology, vol. 201 (2008), p. 780 [5] Monkman G J.J.
Journal of Chongqing Institute of Technology (Natural Science), 3 (2009), p. 34 (In Chinese) [7] Hongyun Wang, Huiqiang Zheng, Yongxian Li.
Chinese Journal of Scientific Instrument, vol. 30 (2009), p. 848

However, the improvement of the stack performance through optimizing the channel dimension is under the expense of consuming more materials.
Advanced Materials Research, 2013. 662: p. 266-272
Journal of Power Sources, 2004. 137(1): p. 71-75
Journal of Power Sources, 2008. 178(1): p. 59-63
Journal of Power Sources, 1996. 63(2): p. 215-219

Materials Science and Engineering: A. 2000, 280(1): 102-107
Materials Science & Engineering A, 2005, 402:1
Materials Science and Engineering: A. 2000, 281(1): 292-304
Materials Science Fourum, 2000, 331/337(1): 127-140.g [5] Kamp N, Sinclair I, starink M J.
Materials Science and technology, 1992, 8: 977

For the use of potential recording materials such as magnetic multilayers, it is essential the knowledge of the shape, the size and behaviour of the small magnetic domains.
Cavallotti, Journal of Magnetism and Magnetic Materials, 316, 173, (2007)
Vernier, Journal of Magnetism and Magnetic Materials, 315, 26, (2007)
Poulopoulos, Journal of Nanoscience and Nanotechnology, 8, 1-6, (2008)
Brandle, Journal of Magnetism and Magnetic Materials, 93, 183, (1991), and references therein

Minimum Particle Diameter of the Vanadium/ Iron Co-doped Nano-TiO2 Transparent Hydrosol at Room Temperature Ling Li 1, a*, Wenming Zhang 1, b, Huayan Zhang1, c, ZiHao Xu1, Sen Wang1, Xiaowei Li1* and Guoyi Dong1 1 Heibei Key Laboratory of Optic-electronic Information Materials, College of Physics Science and Technology, Heibei Unversity, Baoding 071002, China alilinghbu@163.com, bwmzhanghbu@126.com, czhanghy4321@163.com Keywords: nano-TiO2 transparent hydrosol, V/Fe co-doped, minimum particle diameter, photocatalysis Abstract.
Vanadium/iron co-doped nano TiO2 transparent hydrosol with an average particle size of 3.8 nm was synthesized by a novel complexation-controlled hydrolysis method at room temperature and atmospheric pressure by using TiCl4, ferric nitrate, ammonium metavanadate, etc. as raw materials.
In this paper, a series of mesoporous nano-TiO2 material co-doped with V/Fe were synthesized by a novel complexation-controlled hydrolysis method at room temperature synthesis, using TiCl4, Fe(NO3)3·9H2O, and NH4VO3 as raw materials, their photocatalytic properties were also studied.
Acknowledgements We gratefully acknowledge the financial support from the following sources: National Natural Science Foundation of China (NSFC) (Grants 21201053), Specialized Research Fund for the Doctoral Program of Higher Education (20121301120005), Outstanding Youth Fund in Hebei Province Department of Education (YQ2013009), Fund in Hebei Province Natural Science (F2014201078), China Postdoctoral Science Foundation Funded Project (2013M540213), and Hebei University Talent Introduction Fund (2012-233).
Wetchakun, Highly Efficient Visible-Light-Induced Photocatalytic Activity of Fe-doped TiO2 Nanoparticles, Engineering Journal 16 (2012) 143-151

[3] Fan Z. on International Materials Review, Vol. 47, 49–85, 2002
Liu on Materials Science and Engineering: A, Volume 496, 1-2, 25, 439-446, 2008
Atkinson on Progress in Materials Science, 50, 34 412, 2005
[9] Nafisi S. and Ghomashchi R. on Journal of Materials Characterization, Vol. 57, 371, 2006
Shaping profiles on Materials and Design, Oxford, UK: Butterworth-Heinemann, 246, 2002

Supporting parameters and materials: 1) U29 mine steel support: roof beam and upright post are made to lap over each other, The bar lap length shall be 400mm. floor beam uses deflection of elastic thin bending plate, welding δ=10mm steel.
Supporting parameters and materials: 1) Φ20mm reinforcing steel, its length is less than 3m.
Beijing: Science Press, 2006:20-21 [2] Zhang Shengqiang.
Journal of China Coal Society, Vol.36, 2011, pp.738-746.
Journal of Mining & Safety Engineering, 2010，27（4）：527-531.

Materials and Model Tensile investigation The material used in this paper is PLA.
FlexDIC Q-400 is an optical measuring system used in dimensional measurements of displacements, strains and so on for different structures and materials[17].
Popa: submitted to Applied Mechanics and Materials (2018) [2] B.R.
Bhagat: submitted to International Journal of Scientific Research in Science and Technology, 2023 [5] D.C.K.
Johanning: submitted to Rapid Prototyping Journal (2019) [9] L.

Due to the complexity of the special material, only few researchers get the data from field investigation though lots of job carried out in simulating.
Acknowledgement The work described in this paper was supported by the National Natural Science Foundation for Innovative Research Groups in Science (50621062); State Key Laboratory of Science and Technology Basic Research Grant (SLDRCE08-A-03); The National Natural Science Foundation of China for Surface Project (50608060). 6.
Journal of Wind Engineering and Industrial Aerodynamics, 2003. 91: p. 551-569. 2.
Gamble, S.L., Finite Area Element Snow Loading Prediction Applications and Advancements Journal of Wind Engineering and Industrial Aerodynamics, 1992. 41-44: p. 1537-1548. 4.
Key Engineering Materials 2010. accepted. 6.

The fiber volume (Vf) for both material was 55±5%.
Chinese Journal of Aeronautics.
Chinese Journal of Aeronautics.
To be published in Journal of Composite Structures Vol. 75, 2006 [8] Z.Shen, P.H.Chen, S.C.Yang.
Journal of Material Engineering Vol. 2006.5