共搜索到8675条信息,每页显示10条信息,共868页。用时:0小时0分0秒390毫秒
J. Cent. South Univ. Technol. (2008) 15(s1): 447-452 DOI: 10.1007/s11771-008-397-9 Mechanical model for yield strength of nanocrystalline materials under high strain rate loading ZHU Rong-tao(朱... and Engineering, Nanjing University of Technology, Nanjing 210009, China) Abstract: To understand the high strain rate deformation mechanism and determine the grain size, strain rate and porosity dependent......
......
......
FEA modeling of effect of axial feeding velocity on strain field of rotary swaging process of pure magnesium RONG Li(荣 莉), NIE Zuo-ren(聂祚仁), ZUO Tie-yong(左铁镛) School of Material Science... for d=7.0mm. The increase of vax has no notable influence on strain distribution along radial direction. The errors between the experimental and simulated height of the spiral spine-like ridges......
......
Extraction and purification of magnetic nanoparticles from strain of Leptospirillum ferriphilum GAO Jian(高 健)1, 2, XIE Jian-ping(谢建平)1, DING Jian-nan(丁建南)1, KANG Jian(康 健)1, 2, CHENG Hai-na(程海娜..., Xiangtan 410201, China Received 20 January 2006; accepted 24 April 2006 Abstract: The magnetic nanoparticles were extracted from Leptospirillum ferriphilum, strain YSK, isolated from acid mine......
......
......
Analytical solutions of stress and displacement in strain softening rock mass around a newly formed cavityLU Yan-er (鲁燕儿)1, YANG Wu (杨武)2(1. State Key Laboratory of Geomechanics and Geotechnical... in strain softening rock mass around a newly formed cavity are derived with a three step-wise elasto-plastic model. Hoek-Brown criterion is adopted as the yielding criterion of rock mass. Damage......
J. Cent. South Univ. Technol. (2008) 15: 508-514 DOI: 10.1007/s11771-008-0096-6 Isolation and characterization of YNTC-1, a novel Alicyclobacillus sendaiensis strain DING Jian-nan(丁建南)1, 2, HE... acidothermophilic bacterial strain, YNTC-1, was isolated from an acidic hot spring in Tengchong, Yunan, China. YNTC-1 grows at pH value of 1.5-8.0 and temperature of 40-70 ℃, with optimal pH......