检索结果-南通市图书馆

AGE DETERMINATION ON BOUNDARIES OF THE SINIAN, TRIASSIC, JURASSIC, CRETACEOUS AND TERTIARY STRATA IN NORTHERN china

在线全文

学校读者我要写书评

暂无评论

chinese Science Bulletin 1988年第2期33卷 137-142页

作者：王东方 Shenyang institute of geology and Mineral Resources Chinese Academy of Geological Sciences

1. The Lower Boundary of the Sinian System It has been established that the Liaonan group, including the Wuhangshan and Jinxian subgroups, directly overlies the Xihe group. Sabelliditidae was discovered in the Changli... 详细信息

关键词： shale subgroups Tertiary dating Triassic Cretaceous strata quartz sedimentation Jurassic

Expression and localization of VCX/Y proteins and their possible involvement in regulation of ribosome assembly during spermatogenesis

在线全文

学校读者我要写书评

暂无评论

Cell Research 2003年第3期13卷 171-177页

作者： SHENG WEI ZOU,JIAN CHAO ZHANG,XIAO DONG ZHANG,SHI YING MIAO,SHU DONG ZONG,QI SHENG,LIN FANG WANGNational Laboratory of Medical Molecular Biology,institute of Basic Medical sciences,{2. Academy of Medical sciences,Peking Union Medical College,5 Dong Dan 3-tiao,beijing 100005,chinaNational B,esearch institute for Family Planing,WHO Collaboration Center for B,esearch in Human Reproduction,12.Da Hui Si,beijing 100081,china 1National Laboratory of Medical Molecular Biology Institute of Basic Medical Sciences Chinese Academy of Medical Sciences Peking Union Medical College 5 Dong Dan 3-tiao Beijing 100005 China 2.ational Research institute for Family Planing WHO Collaboration Center for Research in Human Reproduction 12 Da Hui Si Beijing 100081 China 1National Laboratory of Medical Molecular Biology Institute of Basic Medical Sciences Chinese Academy of Medical Sciences Peking Union Medical College 5 Dong Dan 3-tiao Beijing 100005 China 1National Laboratory of Medical Molecular Biology Institute of Basic Medical Sciences Chinese Academy of Medical Sciences Peking Union Medical College 5 Dong Dan 3-tiao Beijing 100005 China 2.ational Research institute for Family Planing WHO Collaboration Center for Research in Human Reproduction 12 Da Hui Si Beijing 100081 China 1National Laboratory of Medical Molecular Biology Institute of Basic Medical Sciences Chinese Academy of Medical Sciences Peking Union Medical College 5 Dong Dan 3-tiao Beijing 100005 China 1National Laboratory of Medical Molecular Biology Institute of Basic Medical Sciences Chinese Academy of Medical Sciences Peking Union Medical College 5 Dong Dan 3-tiao Beijing 100005 China

Variable Charge X/Y(VCX/Y)is human testis-specific gene family that localized on X and Y *** this study,VCY protein was expressed in *** in the form of glutathione-S-transferase(GST)fusion *** the purified fusion protein as antigen,the anti-GST-VCY antibody was generated andthe localization of VCY protein in human testis was determined by *** the testisseminiferous epithelium,VCY proteins were highly expressed in nuclei of germ *** propidium io-dide staining and green fluorescent protein(GFP)tag technologies,VCY and VCX-8r proteins were mainlylocalized in the nucleoli of COS7 *** *** colocalization for VCY and VCX-8r in COS7 cellswas also *** VCY cDNA as bait,a cDNA fragment of acidic ribosomal protein PO was obtainedusing yeast two-hybrid *** the information above indicated that VCX/Y protein family might beinvolved in the regulation of ribosome assembly during spermatogenesis.

关键词： VCX/Y protein spermatogenesis nucleoli colocnlization.

PARALLEL MULTI-STAGE & MULTI-STEP METHOD IN ODES

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Computational Mathematics 2000年第2期18卷 157-164页

作者： Xiao-qiu Song (institute of Computer Application and Simulation Technology P.O.Box 392., beijing 100854,{2.) 北京计算机应用与仿真技术所北京 100854

Presents information on a study which discussed the theory of parallel multi-stage and multi-step method, which is a form of combining Runge-Kutta method with linear multi-step method. Basic theory and equations; Appl... 详细信息

关键词： ordinary differential equations parallel simulation

Noise helped manifestation of intrinsic frequency:A case study in the mesoscopic hormone signaling system

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2009年第10期19卷 1209-1214页

作者： Lin Ji a,,Yuanyuan Zhang a,Xiufeng Lang b,Wenxiang Hu a,Qianshu Li c a Department of Chemistry,Capital Normal University,beijing 100048,china b School of Science,beijing University of Aeronautics and Astronautics,beijing 100191,china c The institute for Chemical Physics,beijing institute of Technology,beijing 100081,china [a]Department of Chemistry Capital Normal University Beijing 100048 China [b]School of Science Beijing University of Aeronautics and Astronautics Beijing 100191 China [c]The institute for Chemical Physics Beijing Institute of Technology Beijing 100081 China

The selective sustainment of nonlinear systems to signals is of great significance to signal transduction in living *** take hormone signaling as an example,and investigate the sustainment of internal and external *** results prove that signals with "intrinsic frequency",no matter if it is noise induced or external injected,can be selectively sustained by exploiting internal and/or external *** the internal and external noise can optimize the noise-induced signals,and the optimization is rather robust to the disturbance of external signals with other *** results are of significance for weak signal detection and transduction in the presence of external signals.

关键词： Noise Intrinsic frequency Mesoscopic system

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

阳极氧化铝模板表面自组织条纹的形成

物理学报 2004年第2期53卷 656-660页

作者：刘虹雯郭海明王业亮申承民杨海涛王雨田魏龙中国科学院物理研究所纳米物理与器件实验室北京100080 中国科学院高能物理研究所核分析室北京100039

对未经化学抛光处理的Al进行阳极氧化得到阳极氧化铝模板 ,发现Al表面形成了条纹与多孔阵列共存的自组织结构 ,用原子力显微镜对这种结构进行了研究 .借助Brusselator模型对条纹的形成机理进行了讨论 ,认为条纹图案是Al表面氧化层电... 详细信息

对未经化学抛光处理的Al进行阳极氧化得到阳极氧化铝模板 ,发现Al表面形成了条纹与多孔阵列共存的自组织结构 ,用原子力显微镜对这种结构进行了研究 .借助Brusselator模型对条纹的形成机理进行了讨论 ,认为条纹图案是Al表面氧化层电解液界面的Al2.O3在整个反应过程中的生成和溶解两个过程相互竞争导致的。

关键词：氧化铝模板原子力显微镜自组织条纹 Brusselator模型纳米结构纳米技术化学抛光处理

Surface Molecular Nanopatterns:Structure and Property

在线全文

学校读者我要写书评

暂无评论

Surface Molecular Nanopatterns:Structure and Property

The Epitope Study on the SARS-CoV Nucleocapsid Protein

全国第八届有机固体电子过程暨华人有机光电功能材料学术讨论会

作者： Lijun Wan~* (institute of Chemistry,chinese Academy of {2.,beijing 100080,china) institute of Chemistry Chinese Academy of Sciences Beijing 100080 China

Organic molecules with different functions could be employed to fabric ate molecular *** important issue in the application of functional molecule for molecular device is the precise control of nanostructure and arrangement of molecules on solid *** this presentation, we report the recent results on surface molecular nanopattem

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Genomics, Proteomics & Bioinformatics 2003年第3期1卷 198-206页

作者： Shuting Li, Liang Lin, Hao Wang, Jianning Yin, Yan Ren, Zhe Zhao, Jie Wen, Cuiqi Zhou, Xumin Zhang, Xiaolei Li, Jingqiang Wang, Zhengfeng Zhou, Jinxiu Liu, Jianmin Shao, Tingting Lei, Jianqiu Fang, Ningzhi Xu, and Siqi Liubeijing Genomics institute, {2. Academy of sciences, beijing 101300, china & beijing Proteomics institute, beijing 101300, china beijing Genomics institute Chinese Academy of Sciences Beijing 101300 China.

The nucleocapsid protein (N protein) has been found to be an antigenic protein in a number of coronaviruses. Whether the N protein in severe acute respiratory syndrome-associated coronavirus (SARS-CoV) is antigenic remains to be elucidated. Using Western blot and Enzyme-linked Immunosorbent Assay (ELISA), the recombinant N proteins and the synthesized peptides derived from the N protein were screened in sera from SARS patients. All patient sera in this study displayed strong positive immunoreactivities against the recombinant N proteins, whereas normal sera gave negative immunoresponses to these proteins, indicating that the N protein of SARS-CoV is an antigenic protein. Furthermore, the epitope sites in the N protein were determined by competition experiments, in which the recombinant proteins or the synthesized peptides competed against the SARS-CoV proteins to bind to the antibodies raised in SARS sera. One epitope site located at the C-terminus was confirmed as the most antigenic region in this protein. A detailed screening of peptide with ELISA demonstrated that the amino sequence from Codons 371 to 407 was the epitope site at the C-terminus of the N protein. Understanding of the epitope sites could be very significant for developing an effective diagnostic approach to SARS.

关键词： SARS coronavirus nucleocapsid protein antigenicity epitope

Allelopathic interference of the essential oil from wild oat (Avena fatua) and crabgrass (Digitaria sanguinalis) with wheat (Triticum aestivum)

在线全文

学校读者我要写书评

暂无评论

Allelopathic interference of the essential oil from wild oat...

An important military city of the Early Western Zhou Dynasty:Archaeobotanical evidence from the Chenzhuang site,Gaoqing,Shandong Province

中国第五届植物化感作用学术研讨会

作者： ZHOU Bin 1,WANG Peng 1,KONG Chui-Hua 2.1 institute of Applied Ecology,chinese Academy of {2.,Shenyang 110016,china 2.College of Resources and Environmental {2.,china Agricultural University,beijing 100193,china

Crop-weed allelopahtic interactions may be mediated by the volatile allelochemicals released from crop,weed or *** this study,we analyzed chemical constituents of the essential oils from two weeds wild oat (Avena fatua) and crabgrass (Digitaria sanguinalis) and to evaluate their effects on the growth and allelochemical production of wheat (Triticum aestivum).Subsequently,we identified 51 constituents in the essential oil of crabgrass and 2. chemical constituents in that of wild oat by means of GC and GC-MS combination *** crabgrass the main constituent was hexadecyl-oxirane ( 9.04 %).And Henicosane (15.05 %) was the lagest one presented in wild *** the oils affected the growth of wheat with different growth media including water,soil and *** highest shoot dried weight inhibition rate is 2..58 % with the the aqueous solution of volatile oil on filter,and in soil root dried weight inhibition rate arrives at 34.43 %.In particular,the biomass allocation of wheat was changed greatly in aqueous growth ***,the oil of crabgrass changed biomass allocation more significantly than wild oat ***,the essential oils of two weeds induced the production of allelochemical DIMBOA (2.4-Dihydroxy-7-methoxy-1,4Benzoxazin-3-one) in *** DIMBOA content in wheat changed with the induction *** increase was observed at early induction time then declined *** the increase of the induction time,the DIMBOA content in wheat *** the time of 2.h,DIMBOA content wheat exposed to the volatiles of crabgrass or wild oat arrived at the *** points of them were 0.47 mg/g and 0.48 mg/g *** to the plain air the highest DIMBOA content of wheat was 0.36 mg/*** results suggested that allelopathic interference of the essential oils from wild oat and crabgrass with wheat occurred not only on biomass allocation but also on allelochemical production.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Science Bulletin 2012年第Z1期 255-262页

作者： JIN GuiYun1*,ZHENG TongXiu2.LIU ChangJiang3,WANG ChuanMing1 & GAO MingKui2.1 Center for East Asia Archaeology,Shandong University,Jinan 2.0100,china 2.Shandong Provincial institute of Cultural Relics and Archaeology,Jinan 2.0012.china 3 institute of Botany,chinese Academy of sciences,beijing 100093,china

In ancient chinese history,the Western Zhou Dynasty has long been renowned for having expanded its control and territory into many other ***,historical documents and archaeological records of this period are limited;thus the early history of the Western Zhou Dynasty's operation in eastern china and its establishment of the Qi and Lu states have been *** discovery of the Chenzhuang city site in Gaoqing County,Shandong Province,with chariot-horse pits,an altar and bronze vessels with inscriptions,adds a new line of evidence for studying the history of this ***,with no direct evidence,the nature of the city site is *** remains,especially a large number of sweet clover seeds,recovered from this site by systematic archaeobotanical methods provide an important source of information for research into the site's *** that modern sweet clover is superior fodder for horses and the sweet clover seeds from the Chenzhuang site coexist with chariot-horse pits and horse remains,it is suggested these sweet clover seeds might represent the fodder of battle *** suggestion supports the opinion of those who believe the Chenzhuang city site was once an important military city of the Western Zhou Dynasty in eastern china.

关键词： Early Western Zhou Dynasty military city Chenzhuang site archaeobotanic evidence carbonized sweet clover seeds