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Online since: August 2010
Authors: Jing Wang, Jian Jun Sha, Xiao Wei Gao
Copper-alloy (CuCrZr) has been proposed as heat sinking materials because of its high thermal conductivity.
Geometric structure, materials, dimension and mesh for constructed model.
Baker, Journal of Nuclear Materials Vol. 283 (2000), p. 1 [2] H.
Noda, Journal of Nuclear Materials Vol. 313-316 (2003), p. 245 [4] A.
Plochl, Journal of Nuclear Materials Vol. 258-263 (1998), p. 160 [7] J.
Online since: January 2014
Authors: Xin Ye, Quan Yuan
If the material of the two kinds of valve leaflets is the same, the SLV has a better mechanical property than the CLV.
Acknowledgement This work was supported by grants from Natural Science Foundation of State (No: 31170906) Reference [1] A.
Sacks, "Effects of cyclic flexural fatigue on porcine bioprosthetic heart valve heterograft biomaterials," Journal of Biomedical Materials Research Part A, vol. 94A, pp. 205-213, 2010
Baaijens, "A three-dimensional computational analysis of fluid–structure interaction in the aortic valve," Journal of biomechanics, vol. 36, pp. 103-112, 2003
Journal of Fluids and Structures. 2008;24(1):58-74
Online since: January 2012
Authors: Wei Ping Nie, Chong Shi
The lining concrete’s thickness is 1.5m; it uses elastic material simulation; for the mechanical parameters of lining material, see Table 4; for the diagrammatic sketch of the lining of surge tank, see Fig.8.
Table 4 Mechanical parameters of the second lining Concrete material Volume weight(kN/m3) Elastic modulus E(GPa) Poisson’s ratio C25 25.00 28.00 0.167 Fig. 8 Diagrammatic sketch for second lining of surge tank Fig. 9 Comparison of safety factor with change of lining elevation (2) The unloading energy is extremely adverse to surrounding rock stability; the timely support measures must be done after cavern excavation for guarding against the disasters caused by energy accumulation; the surface of surrounding rock will be broken but not large area damage
References [1] XIAO Ming: submitted to Chinese Journal of Geotechnical Engineering(2000) [2] RU Zhong-liang, FENG Xiating, LI Hongdong, et al: submitted to Chinese Journal of Rock Mechanics and Engineering (2006) [3] WANG Haijun, REN Xuhua, ZHANG Jixun: submitted to Journal of China Three Gorges University(Natural Sciences)(2009) [4] SU Xiangzhen, HE Jiangda: submitted to Sichuan Water Conservancy(2006) [5] YE Chao, XIAO Ming, YANG Yaling: submitted to Rock and Soil Mechanics(2008) [6] QIAN Xiangdong,JIAO Ciahong: submitted to Advances in Science and Technology of Water Resources(2007) [7] NIE Weiping, XU Weiya, ZHOU Xianqi: submitted to Chinese Journal of Rock Mechanics and Engineering(2009)
Online since: July 2015
Authors: Saidatul Shima Jamarib, Suriati Ghazalic, Wan Siti Nadiah Wan Yaacoba
American Journal of Agricultural and Biological Sciences. 3(1): 299-314
Superabsorbent polymer materials: A review.
Iranian Polymer Journal. 17(6): 451-477
Synthesis and characterization of bio-composite material.
Composites Science and Technology. 68(3-4): 631-638
Online since: August 2013
Authors: Calin Deneș, Valentin Grecu, Nagore Ipiña
Contrast this to the prevalent content tyranny that encourages academic staff to push through as much material as possible in a given session.
Journal of the American Academy of Child and Adolescent Psychiatry. 50 (2011) 480–489
A Review of the Research, Journal of Engineering Education. 93 (3) (2004) 223-231
McManus, The Two Paradigms of Education and the Peer Review of Teaching, Journal of Geoscience Education.
Active Learning, The Sourcebook for Teaching Science, 2007 available at: http://www.csun.edu/science/ref/pedagogy/active-passive/active-passive-learning.html, accessed: 21.01.2013
Online since: June 2011
Authors: Ding Fei Zhang, Yu Ping Liu, Chang Guo Chen, Ya Juan Xu
Introduction Galvanic Corrosion is one of the major issues in using of magnesium alloy and other materials in automotive industry [1-3].
Nevertheless, aluminum alloy still is the main material of express train.
And the value of γ is greater than zero, indicating that the galvanic corrosion leads to serious corrosion of materials in accordance with the macroscopic photo and SEM results [10-12].
References [1] G.L.Song,B.Iohannesson,S Hapugoda,D.StJohn:Corrosion Science Vol.46(2004),p.955-977 [2] K.Xiao, CH.F.Dong, J.Q.Li, X.G.Li, D.Wei: Rare metal materials and Engineering Vol. 36(2007), p. 201-207 [3] J.X.Jia,G.L.Song,A.Atrens:Corrosion Science Vol.48(2006),p.2133-2153 [4] R.CH.Zeng,J.Chen,J.Zhang:Materials Review Vol.22(2008),p.107-109 [5] J.X.Zhang,W.Zhang,J.Q.Li,Zh.Ma,G.Zh.Zeng: Journal of University of Science and Technology Beijing Vol.28(2006),p,454-460 [6] M.Jonsson,D.Persson,D.Thierry:Corrosion Science Vol.49(2007),p,1540-1558 [7] W.Q.Zhou,D.Y.Shan,E.H.Han,W.Ke:Transactions of nonferrous Metals Society of China Vol.20(2010),p,s670-s673 [8] L.Q.Zhu,G.L.Song:Surface and Coating Technology Vol.200(2006),p,2834-2840 [9] D.F.Zhang,Y.P.Liu,Y.P.Sheng,J.G.Zhang, CN Patent, 200910103124.1 (2009) [10] D.Ernur,S.Kondo,D.Shamiryan,K.Maex:Miroelectronic Engineering Vol64(2002),p,117-124 [11] Z.F.Yin,M.L.Yan,Z.Q.Bai,W.Z.Zhao,W.J.Zhou:Electrochimica Acta Vol53(2008),p,6285
-6292 [12] C.Liu,D.L.Chen,S.Bhole,X.Cao,M.Jahazi:Materials Characterization Vol.60(2009),p,370-376 [13] C.Andrade,P.Garces,I.Martinez:Corroison Science Vol.50(2008),p,2959-2964 [14] H.Hoche,C.Blawert,E.Broszeit,C.Berger:Surface & Coating,J.G.Anto:Corrosion Science Vol.49(2007),p,4452-4471
Online since: June 2008
Authors: Il'ya V. Ratochka, Evgeny V. Naydenkin
Ratochka 1,b 1 Institute of Strength Physics and Materials Science SB RAS Tomsk, 634021, Russia, Akademicheskii pr. 2/1 a nev@ispms.tsc.ru, bivr@ispms.tsc.ru Keywords: ultra-fine grained materials, titanium and aluminum alloys, multi directional pressing, equal-channel angular pressing, grain boundary sliding, high strain rate superplasticity.
However at the temperature the material still demonstrated the conventional behavior for ultra-fine grained materials with short stage of work hardening and long stage of softening.
A l e k s a n d r o v : Nanostructured materials produced by severe plastic deformation.
Grain boundary diffusion and properties of nanostructured materials.
Russian Physics Journal.
Online since: December 2012
Authors: Yan Xia Tan, Kang Bi Luo, Hu Ping Li
This article took the sodium sulfate and calcium chloride as the raw material and prepared calcium sulfate whiskers by hydrothermal method.
The calcium sulfate whiskers have the advantages such as high temperature resistance, corrosion resistance, high strength, high toughness, easy to surface treatment and are the inorganic materials having an excellent reinforcing and toughening function.
Therefore, its application scopes are extremely widespread and can be applied to the areas of plastic, rubber, polyurethane, friction materials, lightweight building materials, nonflammable paper manufacturing, automotive and electronics etc [1-3].
Influence of the raw material concentration.
Journal of Wuhan University of Science and Technology (In Chinese).
Online since: December 2010
Authors: Yin Xu, Sheng Hong Chen
Random Adjusted Calculation Method for 3D Aggregate of Concrete Yin Xu1, a, Shenghong Chen 1,b 1 State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, Hubei 430072, China axuyinwd@163.com, bchensh@whu.edu.cn Keywords: three-dimensional; concrete; aggregate delivery; random adjusted calculation method.
Discrete element method is emerging as a useful numerical analysis tool for engineers interested in granular materials such as soil, concrete, or pharmaceutical powders.
However, the effectiveness of the method is directly dependent on the efficient and practical algorithm for aggregate delivery when apply particle discrete element method into the research of concrete’s material property from mesoscopic point of view.
Journal of Physics D: Applied Physics, 1969,2:863-866
International Journal for Numerical Methods in Engineering,2003,56:699-713
Online since: January 2005
Authors: Hee Soo Kim, Pil Kim, Young Geun Park, Jae Ho Lee, Kyung Hee Choi, Jong Heop Yi
Prepared mesoporous carbon materials were found to have high surface area and large pore volume with uniform pore size.
Resulting materials showed a different pore arrangement from mesoporous silica templates.
Materials and Method In order to synthesize mesoporous carbon (2D-MC and 3D-MC), two types of mesoporous silica were prepared.
All materials examined had relatively high surface area and large pore volume with a narrow pore size distribution.
Stucky: Science Vol. 279 (1998), p.548