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1Opening of an early Paleozoic limited oceanic basin in the northern Altyn area: Constraints from plagiogranites in the Hongliugou-Lapeiquan ophiolitic mélange显示文摘This paper reports petrological and geochemical features and zircon U-Pb age of plagiogranite from the Hongliugou-Lapeiquan ophiolitic mélange belt in the northern Altyn Tagh. The zircon U-Pb dating results yield a mean 238U/206Pb age of 512.1 - 1.5 Ma, representing an emplacement time of the plagiogranites in the Middle Cambrian. The plagiogranites are interpreted to have derived from anatexis of hydrated amphibolites by ductile shearing during transports of the oceanic crust. Thus it is believed that the formation age of such type of plagiogranite was coeval to or slightly younger than the spreading of the Hongliugou-Lapeiquan limited oceanic basin. The new results from the plagiogranites suggest that an oceanic basin existed in the northern Altyn area during the Middle Cambrian.GAO XiaoFeng XIAO PeiXi GUO Lei DONG ZengChan XI RenGang 2011Science China Earth Sciences2011,54,12:18
2Correlation between hepatitis B virus protein and microRNA processor Drosha in cells expressing HBV显示文摘Min Ren Dongdong Qin Kai Li Jialin Qu Liying Wang Zengchan Wang Ailong Huang Hua Tang 2012Antiviral Research2012,,3:1
3Molecular cloning and structural analysis of human norepinephrine transporter gene(NETHG)显示文摘A cDNA molecule encoding a major part of the hu-man Norepinephrine transporter(hNET) was synthesized by means of Polymerase Chain Reaction(PCR) technique and used as a probe for selecting the human genomic NET gene. A positive clone harbouring the whole gene was ob-tained from a human lymphocyte genomic library through utilizing the 'genomic walking' technique. The clone, des-ignated as phNET, harbours a DNA fragment of about 59 kb in length inserted into BamH Ⅰ site in cosmid pWE15.The genomic clone contains 14 exons encoding all amino acid residues in the protein. A single exon encodes a dis-tinct transmembrane domaill, except for transmembrane domain 10 and 11, which are encoded by part of two ex-ons respectively, and exon 12, which encodes part of do-main 11 and all of domain 12. These results imply that there is a close relationship between exon splicing of a gene and structural domains of the protein, as is the case for the human γ-aminobutyric acid transporter(hGAT) and a number of other membrane proteins.GUO LIHE LIHUA ZHU FANG HUANG ANTHONY CW TAM ZENGCHAN YE JIAN FEI XIAOYONG ZHANG DOMINIC MAN-KIT LAM (Shanghai Institute of Cell Biology, Chinese Academy of Sciences, Shanghai 200031, China.)(Honq Kong Institute of Biotechnology, Shatin, NT,Hong Ko 1995Cell Research1995,5,1:0
4NEW APPROACH TO OBTAIN SPACE-TIME CONSERVATION SCHEMES显示文摘A new approach to obtaining space-time conservation schemes is proposed.This approach is very simple and easy to apply in high dimension problems. Numerica1 re-su1ts show that the new schemes obtained by this method not only are very efficient andaccurate, but also have very high shock resolution.Zhang Zengchan Sheng Mengyu(Dept of Engineering Mechanics, Tsinghua University, Beijing, 100084, China) 1997Chinese Journal of Aeronautics1997,10,2:0
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