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| 1 | Precipitation of α_2 Phase in α+β Solution-Treated and Air-cooled Ti-Al-Sn-Zr-Mo-Si-Nd Alloys显示文摘A series of Ti-Al-Sn-Zr-Mo-Si-Nd alloys with various content of Al were solution treated in α+β phase field and air-cooled. The precipitation of a2 phase in cooling was investigated by transmission electron microscopic analysis The precipitation characteristic of α2 phase was discussed. The precipitation of α2 phase would proceed by the nucleation and growth of α2 phase dependent on the diffusion of Al atoms. And a comparison on the difference of precipitation of α2 phase was carried out under the conditions of air-cooling and quenching in water. The investigation showed that the air-cooling and even quenching could supply enough time for the precipitation and growth of α2 phase when Al content reached a certain value even though far away from the stoichiometric composition of Ti3Al. | Jun ZHANG and Dong LI Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China resent address: Shenyang University, Shenyang 110044, China E-mail: zhjun14@mailcity.com | 2001 | Journal of Materials Science & Technology2001，17，3： | 4 |
| 2 | Human papilloma virus infection and cervical intraepithelial neoplasia in transplanted patients 显示文摘 | Paternoster D M Cester M Resente C | 2008 | Transplant Proc2008，40，6： | 1 |
| 3 | Human papilloma virus infection and cervical intraepithelial neoplasia in transplanted patients显示文摘 | Paternoster DM Cester M Resente C | | 0，，06： | 1 |
| 4 | Human papilloma virus infection and cervical intraepithelial neoplasia in transplanted patients显示文摘 | Paternoster DM Cester M Resente C | | 0，，06： | 1 |
| 5 | Human papilloma virus infection and cervical intraepithelial neoplasia in transplanted patients显示文摘 | Paternoster D M Cester M Resente C | 2008 | Transplant Proc2008，40，： | 1 |
| 6 | Human papilloma virus infection and cervical intraepithelial neoplasia in transplanted patients 显示文摘 | Patemoster DM Cester M Resente C | 2008 | Transplantation proceedings2008，40，： | 1 |
| 7 | Novel Bis-(N-alkyl-N ,N-dimethyl-ammonium) Polyethyleneglycol Ether Salts as Phase Transfer Catalysts in the Condensation of l,4-Diacetyl-2,5-piperazinedione and Aldehydes显示文摘Phase transfer catalysis (PTC) has become one of the most extensively used techniques in organic synthesis. The key factor in such processes is the catalyst. There are mainly two kinds of phase transfer catalysts, one is the so called 'crown ethers' including macrocyeles, open chain molecules with long chains, bearing heteroatoms at a proper distance, and can chelate | WANG Li-xin,XU Ming-hua,SHI Yao-zcng and HU Hong-wen (Department of Chemistry,Nanjing University,Nanjing,210008) resent address Chengdu Institute of Organic Chemistry,Acdemia Sinica,Chengdu,610015 Present address:Chengdu lnstutute of Organic Chentistry Acdemia Simca.Chengdu,G10015 | 1995 | Chemical Research in Chinese Universities1995，11，2： | 0 |
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