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Trans. Nonferrous Met. Soc. China 22(2012) 2179-2183 Tortuosity factor for porous FeAl intermetallics fabricated by reactive synthesis GAO Hai-yan1, HE Yue-hui1, ZOU Jin2, XU Nan-ping3, C.T. LIU 4 1... Received 22 November 2011; accepted 29 February 2012 Abstract: The tortuosity factor is the most critical parameter for the pore characteristic of porous materials. The tortuosity factor for porous FeAl......
Trans. Nonferrous Met. Soc. China 31(2021) 726-733 Pore constitution and tortuosity factor of reactively synthesized porous TiAl intermetallic compound Yao JIANG, Yue-hui HE, Hai-yan GAO State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China Received 7 April 2020; accepted 28 September 2020 Abstract: The pore constitution and tortuosity factor of porous TiAl......
Measuring speed consistency for freeway diverge areas using factor analysisQU Xu(曲栩)1, GUO Tang-yi(郭唐仪)2, WANG Wei(王炜)1, HU Qi-zhou(胡启洲)2(1. School of Transportation, Southeast University, Nanjing... for speed consistency, few researches consider both in practice. The factor analysis method was introduced to extract an optimal number of factors from numerous original measures. The freeway diverging......
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that "draws" CA,n towards best fitting to the group of points. The basic element of the force is called circular attracting factor (CAF) which is defined as a real scalar in a radial direction of CA,n..., and for circle detection in BGA inspection.Key words:circle detection; circle fitting; grayscale image; iterative algorithm; least squares fitting (LSF); circular attracting factor (CAF); BGA inspection......
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J. Cent. South Univ. (2021) 28: 595-603 DOI: https://doi.org/10.1007/s11771-021-4624-y Comprehensive safety factor of roof in goaf underdeep high stress JIANG Li-chun(姜立春)1, 2, JIAO Hua-zhe(焦华喆)3... Germany, part of Springer Nature 2021 Abstract: The safety factor of roof under deep high stress is a quantitative index for evaluating roof stability. Based on the failure mode of surrounding rock......
Study on Anticoagulation Factor I from Agkistrodon Acutus Venom by Rare Ea rth Ion Probes 解永树1,刘清亮1,徐小龙1 (1.Department of Chemistry, University of Science and Technology of China, Hefei 230026, China) Abstract:It was observed that rare earth ions (Nd3+, Sm3+, Eu3+, Gd 3+, Tb3+) have significant quenching effects on the fluorescence of anti coagulation factor I (ACF I). The results......
J. Cent. South Univ. (2012) 19: 2008-2015 DOI: 10.1007/s11771-012-1238-4 Upper bound solutions of stability factor of shallow tunnels in saturated soil based on strength reduction technique HUANG Fu... analysis, the factor of safety for shallow tunnel in saturated soil is calculated in conjunction with the strength reduction technique. To analyze the influence of the pore pressure on the factor of safety......
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