维普中文期刊产品整合服务
366篇 您的检索式:作者名="LI SK"
    题名 作者 年代 出处 被引量
1An Archean continental block in the Taihangshan and Hengshan regions: Constraints from geochronology and geochemistry显示文摘Recent research on the tectonothermal evolution and geochronology in the Fuping, Hengshan and Wutaishan metamorphic complexes, together with the discoveries of a high-pressure granulite belt in the northern margin of the North China Craton (NCC) and high-pressure metapelites in the Jingangku Group of the Wutaishan complex, suggests that there was a Neoarchean to Paleoproterozoic orogenic belt related to collision between the Eastern and Western continental blocks. Comparison of geological, geochronological, tectonothermal and geochemical data between the Fuping and Hengshan complexes suggests these two complexes most likely originated and evolved as a single lithotectonic domain (i.e., the Taihangshan-Hengshan block) during the early evolution of the North China Craton, probably as an active margin to the Eastern Continental Block. The Taihangshan-Hengshan block has been subjected to intensive and extensive tectono-magmatism and high-grade metamorphism related to collision between the Eastern and Western continental blocks at ~1.80 Ga.LIU Shuwen , LI Jianghai, PAN Yuanming, ZHANG Jian and LI Qiugen(1. The Key Laboratory of Orogenic Belts and Crustal Evolution, School of Earth and Space Sciences, Peking University, Beijing 100871, China 2. Department of Geological Sciences, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada) 2002Progress in Natural Science:Materials International2002,12,8:32
2Induction of mucosal and systemic immune response by single-dose oral immunization with biodegradable microparticles containing DNA encoding HBsAg显示文摘He XW Wang F Jiang L Li J Liu SK Xiao ZY Jin XQ Zhang YN He Y Li K Guo YJ Sun SH 2005第二军医大学学报2005,26,10:5
3Investigation into the rotational bands of ^(185)Pt with the particle-rotor model显示文摘Theoretical calculations have been performed for the ν9/2+[624](i13/2) and ν7/2-[503](f7/2) bands of 185Pt in the framework of particle-rotor model. The band properties of signature splitting and configuration mixing have been analyzed. The level energy and signature splitting before the band crossing can be well interpreted by introducing triaxiality. The positive-parity yrast band is pro posed to be dominated by the ν9/2+[624](i13/2) component, while the negative-parity band shows strong mixing of ν7/2-[503](f7/2) and ν9/2-[505](h9/2) configurations.LI GuangShun1,2, ZHOU XiaoHong1,2, ZHANG ShuangQuan3, ZHANG YuHu1 & MENG Jie3 1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China 3 School of Physics and SK Laboratory of Nuclear Physics & Technology, Peking University, Beijing 100871, China 2011Science China(Physics,Mechanics & Astronomy)2011,54,S1:4
4Magnetic resonance imaging of hepatocellular carcinoma induced by diethylnitrosamine in Sprague-Dawley rats显示文摘Diethylnitrosamine (DENA) is able to induce various benign and malignant liver lesions in rats with a high success rate and a low mortality rate. It provides a more appropriate model that better simulates the various lesions occurring in humans than the usual model of tumor implantations. The aim of the present study was to evaluate MRI liver examination in Sprague-Dawley(SD) rats as a routine method to detect hepatocellular carcinoma (HCC) nodules induced by DENA and to follow up their growth. METHODS:Hepatic carcinogenesis was induced in 80 male SD rats using oral DENA solution. All animals were imaged for liver tumor detection with a 1.5 Tesla magnet (Siemens Sonata,Erlangen, Germany) using correspondence scan parameters and a radio-frequency knee coil. Macroscopic examinations were performed along the axial MRI sections to evaluate magnetic resonance imaging (MRI) findings, and histopathological assessment was also performed. RESULTS:No false negative results were obtained on MR images. Hepatic tumors in 72 rats were confirmed macro-scopically and 68 rats were detected by MRI till the 20th week. The smallest and the largest nodules detected by MRI were 2 mm and 37 mm in diameter respectively. The agreement rate of MRI with macroscopic observation was 39. 1% and 97. 4% respectively for 2 mm to 5 mm and more than 5 mm nodules. CONCLUSIONS:The hepatic tumor induced by DENA provides a more representative range of tumors for imaging diagnosis and interventional treatment. MRI is the best approach for scrutinizing pathological changes of rat livers in the period of observation.Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China (Li X, Zhou XP and Guan YS) Department of Radiology, Ruijin Hospieal. Shanghai Second Medical University, Shanghai 200025 , China. Current address:Astra Zeneca R & D Alderley, Macclesfield SK 10 4 TG U. K. (Wang YX) 2005Hepatobiliary & Pancreatic Diseases International2005,4,3:3
5Microstructure, Impact Toughness and TEM Analysis in the CGHAZ of HQ130 High Strength Steel显示文摘Microstructure and impact toughness in the coarse grain heat-affected zone (CGHAZ) of HQ130 high strength steel were studied by using the weld thermo-simulation test. Fracture morphology and fine structure in the CGHAZ were analyzed by means of SEM, TEM and electron diffraction.Experimental results indicated that the impact toughness and hardness in the CGHAZ (Tm =1350℃) decreased with increasing cooling time (t8/5), and fracture morphology changed from dimple fracture into cleavage fracture. The reason for the toughness decrease is the formation of upper bainite. During application, the welding heat input should be strictly limited, to reduce brittleness in the CGHAZ of HQ130 steel.Zou, ZD Li, YJ Yin, SK 1999Journal of Materials Science & Technology1999,15,6:2
6identification of functionally important amino acid residues in the mitochondria targeting sequence of hepatitis B virus X protein显示文摘Li SK Ho SF Tsui KW 2008Virology2008,381,1:1
7Sensori-motor function,gait patterns and falls in community-dwelling women显示文摘LORD SR LLOYD DG LI SK 1996Age Ageing1996,25,4:1
8Neuroglobin protects neurons against oxidative stress in global ischemia显示文摘Li RC Guo SZ Lee SK 0,,:1
9Effects of the chop lengths of alfalfa silage and oat silage on feed intake, milk production, feeding behavior, and rumen fermentation of dairy cows显示文摘Bhandari SK Li S Ominski KH 2008J Dairy Sci2008,91,5:1
10Acupuncture for glaucoma显示文摘SK Law T Li 2007Cochrane DatabaseSyst Rev2007,17,00:1
11Clinical and haemodynamic effects of sildenafil in pulmonary hypertension: acute and mid-term effects 显示文摘Mikhail GW Prasad SK Li W 2004Eur Heart J2004,25,5:1
12Neuroglobin protects PC12 ceils against oxidative stress显示文摘Li RC Morris MW Lee SK 2008Brain Res2008,1190,23:1
13Comparison of adaptive statistical iterative and filtered back projection reconstruction techniques in brain CT显示文摘Ren Q Dewan SK Li M 2012Eur J Radiology2012,81,10:1
14Activation of a Src-dependent Raf-MEK1/2-ERK signaling pathway is required for IL-lalpha-induced upregulation of beta-defensin-2 in human middle ear epithelial cells显示文摘 Lee HY Li JD 2002Biochim Biophys Acta2002,1590,13:1
15Angiotensin-converting enzyme 2 is a functional receptor for the SALS coronavirus 显示文摘Li W Moore MJ Vasilieva N Sui J Wong SK Berne MA 2003Nature2003,,:1
16Hypoxia differentially regulates the expression of neuroglobin and cytoglobin in rat brain 显示文摘Li RC Lee SK Pouranfar F 2006Brain Res2006,1096,1:1
17Pharmacological preconditioning with low-dose cyclosporine or FK506 red uces subsequent ischemia/reperfusion injury in rat kidney 显示文摘 Ahn HJ Han HJ Kim WY Li C Shin MJ Kim SK Park JH Kim YS Moon IS Bang BK 2001Transplantation2001,72,11:1
18Light-controlled release of caged doxorubicin from folate receptor-targeting PAMAM dendrimer nanoconjugate显示文摘Choi SK Thomas T Li MH 2010Chem Commun2010,46,15:1
19On-off transport through a thermoresponsive hydrogel composite membrane显示文摘Li SK D' Emanuele A 2001J Controlled Release2001,75,:1
20Identification of key tissue type for antler regeneration through pedicle periosteum deletion显示文摘Li C Mackintosh CG Martin SK Clark DE 2007Cell Tissue Res2007,328,1:1
返回顶部 每页显示:
共19页 首页 上一页 第1页 下一页 末页 /19 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费