检索结果-南通市图书馆

维普期刊数据库

Being the Pioneer of Life Sciences in china——Introduction to beijing genomics institute

在线全文

学校读者我要写书评

暂无评论

genomics, Proteomics & Bioinformatics 2004年第1期2卷 59-63页

作者： Xin Zhang beijing genomics institute, beijing 101300, china. beijing genomics institute Beijing 101300 China

The beijing genomics institute (BGI) of Chinese Academy of Sciences (CAS) wasofficially founded in December 2003. Its predecessor, beijing Huada genomics Research Center, haspresented significant contributions to the development of life sciences in china by its excellentscientific innovations and achievements in the last five years. From the participation ofInternational Human Genome Project (HGP) to the independent completion of the whole-genome draft andfine maps of Chinese super hybrid rice genome, from the porcine genome research cooperated withDenmark to the international chicken genome research, and from the silkworm genome projectaccomplished together with The Southwest Agriculture University of china to the great contributionsto the national campaign against SARS, all these facts illustrate that BGI not only has afirst-class scientific research power in the world but also is full of devotion to the flourish ofscience and nation. During these years, we have upheld the strategy of ''Advance through projects,strive for innovation, grow through cooperation'', in the aim of making BGI as one of the pioneers ofCAS climbing the peak of life sciences in the world.

关键词： Chinese Academy of Sciences beijing genomics institute innovation life sciences

维普期刊数据库

A Putative NES Mediates Cytoplasmic Localization of Apoptin in Normal Cells

在线全文

学校读者我要写书评

暂无评论

Acta Biochimica et Biophysica Sinica 2004年第12期36卷 817-823页

作者： Qing-Ming WANG*, Guo-Cai FAN, Ji-Zhong CHEN, Hui-Peng CHEN, and Fu-Chu HE* Department of genomics and Proteomics, beijing institute of Radiation Medicine, beijing 100850, china Department of genomics and Proteomics Beijing Institute of Radiation MedicineBeijing 100850 China

Apoptin, a protein expressed by chicken anemia virus, is found predominantly in the cytoplasm in normal cells, whereas it localizes in the nucleus in transformed and malignant cells. However, the mecha- nisms that regulate the different subcellular localization of Apoptin in normal and tumor cells have not been fully clarified. In this work, a putative nuclear export signal (NES) in Apoptin was predicted. It was testified that the putative NES (pNES) of Apoptin was not a functional NES, but actually acted as a cytoplasmic retention signal. Deletion of the pNES led to the nuclear accumulation of Apoptin in normal cells. In addition, when a strong nuclear localization signal was introduced into Apoptin, it exclusively translocated to the nucleus in normal cells. These observations indicated that the cytoplasmic localization of Apoptin in normal cells results from the balance between cytoplasmic retention and nuclear import. On the other hand, the pNES was also proved to be necessary for Apoptin multimerization. Mutants lacking the pNES did not form obviously visible globular aggregates in normal or tumor cells.

关键词： Apoptin nuclear localization signal cytoplasmic retention signal nuclear export signal

On Unique Range Sets for Meromorphic or Entire Functions

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 1998年第4期14卷 569-576页

作者： Fang Mingliang, institute of Mathematics, Academia Sinica, beijing 100080, china Department of Mathematics, Nanjing Normal University, Nanjing 210097, chinaGuo Hui, Department of Mathematics, shenzhen University, shenzhen 518060, china institute of Mathematics Academia Sinica 100080 Beijing China

This paper has studied the Gross uniqueness question ignoring multiplicity and relating multiple values, and extended and improved on some related results in.

关键词： Meromorphic functions Multiplicity Unique range set

维普期刊数据库

Applications using next generation sequencing technology

在线全文

学校读者我要写书评

暂无评论

Applications using next generation sequencing technology

Overview of HBV whole genome data in public repositories and the Chinese HBV reference sequences

第八次全国医学遗传学学术会议(中华医学会2009年医学遗传学年会)

作者： Wang Jun,Zhang Yong beijing genomics institute-shenzhen

In the past,traditional disease research is only focus on single/a few *** is hypothesis-driven research *** two years,Functional genome research takes advantage of newly available genome sequences and high-throughput genome technologies to study genes and/or proteins to inform the perspective of entire biological *** next generation sequencing technology speed up the whole research *** research became to *** can use the next-generation of sequencing applied as follows;Whole genome resequencing,Exome-capture sequencing,Transcriptome,Digital gene expression profiling,MicroRNA, Epigenome,Pathogen,In order to define structural rearrangements and CNV,to define coding sequence mutation,to define alteration in expression levels,aberrant splicing and fusion transcripts,to defined the relation with the *** costs has enabled the sequencing of individual human *** data of the Chinese population will be rapidly accumulated and will result in the identification of new gene-disease associations and wide applications of genomics in clinics.

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

Progress in Natural Science:Materials International 2008年第1期18卷 13-20页

作者： Guanghua Wu a,b, Huiguo Ding c, Changqing Zeng b,* a Graduate School of Chinese Academy of Sciences, beijing 100049, china b beijing institute of genomics, Chinese Academy of Sciences, beijing 101300, china c beijing Youan Hospital, Capital Medical University, beijing 100069, china Graduate School of Chinese Academy of Sciences Beijing 100049 China beijing institute of genomics Chinese Academy of Sciences Beijing 101300 China beijing Youan Hospital Capital Medical University Beijing 100069 China

The number of Hepatitis B virus (HBV) whole genomic sequences in public nucleotide databases (GenBank, EMBL, and DDBJ) had reached 866 by January 1, 2007. Coming from 46 countries and regions, these sequences were categorized as eight genotypes (A–H). With the statistical and phylogenetic analysis on all available complete genomic data of HBV, we here present an overview of HBV sequences in public databases. From all registered 229 HBV genomes in Chinese regions as well as 59 sequencing data from our research group, we report the establishment of reference sequences of HBV strains prevailing in china. These analyses provide clues for the effects of HBV genotypes in host clinical progressions, geographic distribution of the infection, and the viral evolutionary history. Moreover, the viral sequence reference would be helpful in the identiffcation of various HBV mutations. Based on the analysis of various public databases, we suggest that the Chinese HBV database with the clinical information should be constructed.

关键词： Public databases HBV genomic sequences Genotype Subtype Chinese reference sequences

Wear properties of NiAl based materials

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2012年第5期22卷 414-425页

作者： Jianting Guo a,Zhensheng Wang b,Liyuan Sheng c,d,Lanzhang Zhou a,Chao Yuan a,Zhigang Chen b,Li Song b a institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,china b Hunan University of Science and Technology,Xiangtan 411201,china c College of Engineering,Peking University,beijing 100871,china d shenzhen institute,Peking University,shenzhen 518057,china [a] institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China [b] Hunan University of Science and Technology Xiangtan 411201 China [c] College of Engineering Peking University Beijing 100871 China [d] shenzhen institute Peking University Shenzhen 518057 China

The NiAl based materials including NiAl-TiC-Al2O3 composite,NiAl-Cr(Mo)-Hf-Ho eutectic alloy and NiAl-Cr(Mo)-CrxSy in situ composite were fabricated and their wear properties were tested at different *** results revealed that the NiAl-TiC-Al2O3 composite,NiAl-Cr(Mo)-Hf-Ho eutectic alloy and NiAl-Cr(Mo)-CrxSy in situ composite exhibited the excellent wear properties between 700℃ and 900℃.The microstructure observations exhibited that the self-lubricant films formed on the worn surfaces during the dry sliding test at high temperature,which decreased the wear rate and friction coefficient *** observation on the self-lubricant film revealed that it was mainly comprised by ceramic amorphous and *** with the NiAl-TiC-Al2O3 composite,the NiAl-Cr(Mo)-CrxSy in situ composite has lower friction coefficient at low *** phenomena may be ascribed to the addition of sulfide which contributes much to the formation of self-lubricant,and moreover the TiC addition increase the strength of NiAl based material and its wear resistance.

关键词： NiAl based materials Microstructure Wear properties Self-lubrication Lubricate film

Theory and verification of operator design methodology

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science china(Information Sciences) 2012年第2期55卷 480-490页

作者： HU ZiYi1,ZHAO Yong1,WANG XinAn1,HUANG Ru2,WANG Teng1 & ZHANG Xing2 1Key Lab of Integrated Microsystem Science and Engineering Applications,Peking University shenzhen Graduate School,shenzhen 518055,china 2institute of Microelectronics,Peking University,beijing 100871,china 1. Key Lab of Integrated Microsystem Science and Engineering Applications Peking University Shenzhen Graduate School Shenzhen 518055 China2. Institute of Microelectronics Peking University Beijing 100871 China

Non-recurring-engineering(NRE)and time-to-market play an increasingly important role in the field of IC ***,with the continuous development of IC manufacturing technology,it is necessary to propose a novel design methodology to shorten design cycle and enhance design *** this paper,operator design methodology(ODM)is presented and an H.264 encoder is implemented as a *** to the flow of ODM,the register transfer level(RTL)design of H.264 encoder has been accomplished with 15 man-months,which is lower than the average 19 man-months in the field of traditional application specific integrated circuit(ASIC)***,with the advantage of operator design library,the design has a comparable performance with other ASIC *** obtained design can support a real-time video encoding of 720p at 60 frames per second or 1080p at 30 frames per second,working at 167 MHz with SMIC 0.13 μm CMOS *** results provide good evidence for the practicability and efficiency of ODM.

关键词： operator design methodology H.264 encoder integrated circuit hardware

ZrO2 strengthened NiAl/Cr(Mo,Hf) composite fabricated by powder metallurgy

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2012年第3期22卷 231-236页

作者： L.Y. Sheng a,b, J.T. Guo c, T.F. Xi a,b, B.C. Zhang c, H.Q. Ye c a PKU-HKUST shenzhen-Hong Kong Institution, shenzhen 518057, china b College of Engineering, Peking University, beijing 100871, china c institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, china [a] PKU-HKUST shenzhen-Hong Kong Institution Shenzhen 518057 China [b] College of Engineering Peking University Beijing 100871 China [c] institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

The ZrO2 ceramic particles strengthened NiAl/Cr(Mo,Hf) composite was fabricated from the rapidly solidified NiAl/Cr(Mo,Hf) pre-alloyed powder and the ZrO2 powder by powder metallurgy technique. Microstructure examination revealed that in the prepared composite NiAl and Cr(Mo) phases distributed at the eutectic cell boundary become coarse but many Cr(Mo) platelets inside the eutectic cell were broken, which was different from the original powder. Moreover, fine Ni2AlHf and Hf solid solution particles distributed uniformly in the composite, and the ZrO2 particles mainly segregated along eutectic cell boundary. In addition, twin crystal and stacking faults were observed inside of ZrO2 grains. The experimental results showed that the ZrO2 ceramic particles strengthened NiAl/Cr(Mo,Hf) composite exhibited better room temperature and high temperature mechanical properties than the NiAl/Cr(Mo,Hf) alloy, which may be attributed to the fine structure and the strengthening effect of ZrO2 particles.

关键词： NiAl intermetallics NiAl/Cr(Mo) composite Powder metallurgy ZrO2 strengthening

Next generation sequencing brings a new life of“GWA”study

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Next generation sequencing brings a new life of“GWA”study