检索结果-南通市图书馆

Inhibition of the α-mannosidase Man2c1 gene expression enhances adhesion of Jurkat cells

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Cell Research 2006年第7期16卷 622-631页

作者： Li Qu~(1,*) Ji Yu Ju~(1,*) Shuang Ling Chen~1 Yan Shi~1 Zhi Guang Xiang~1 Yi Qun Zhou~1 Yun Tian~1 Yin Liu~1 Li Ping Zhu~1 ~1Department of Immunology,Institute of Basic Medical Sciences,Chinese Academy of Medical Sciences and Peking Union Medical College,Beijing 100005,China Department of Immunology Institute of Basic Medical Sciences Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China

Protein N-glycosylation plays very important roles in immunity and α-mannosidase is one of the key enzymes in *** paper reports that inhibition of α-mannosidase Man2cl gene expression enhances adhesion of JurkatT *** comparison to the controls with normal expression of the enzyme,Jurkat cells with the inhibition of Man2clgene expression（AS cell）formed larger aggregates in culture,indicating an enhancement of adhesion between the *** differential display analysis discovered up-regulation of several adhesion molecule genes in the AS *** the pivotal role played by CD54-LFA-1 interaction in immune cell interaction,this study focused on the contributionof enhanced expression of CD54 and LFA-1 to the enhanced adhesion of AS Jurkat *** facts,including increasedbinding of AS cells to ICAM-1-Fc,Mg2+activation of the binding of AS cells to ICAM-1-Fc and enhanced aggregationof AS cells,together with the inhibiting effect of a blocking CD 11a mAb on the binding to ICAM-1-Fc and aggregationof the cells demonstrate an important contribution of enhanced CD54-LFA-1 interaction to increased adhesion betweenAS *** enhanced CD54-LFA-1 interaction also resulted in increased adhesion between AS Jurkat T cells and RajiB *** addition,AS cells showed cytoskeletal *** data imply a biological significance of MAN2C1in T-cell functioning.

关键词： Man2cl Jurkat T cell adhesion CD54-LFA-1 cytoskeleton

Comparison of Transformation Efficiency of piggyBac Transposon among Three Different Silkworm Bombyx mori Strains

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 Biochimica et Biophysica Sinica 2007年第2期39卷 117-122页

作者： Boxiong ZHONG~1 Jianying LI~1 Jin'e CHEN~(1,2) Jian YE~1 and Songdong YU~1 ~1College of Animal Sciences,Zhejiang University,Hangzhou 310029,China ~2Institute of Sericultural Research,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,China College of Animal Sciences Zhejiang University Hangzhou 310029 China Institute of Sericultural Research Zhejiang Academy of Agricultural Sciences Hangzhou 310021 China

The transformation rate of three different strains of silkworm Bombyx mori was comparedafter the introduction of enhanced green fluorescence protein （EGFP）-encoding genes into the silkwormeggs by microinjection of a mixture of piggyBac vector and helper plasmid containing a *** there were no significant differences among the three strains in the percentages offertile moths in microinjected eggs （P=0.1258）,the percentages of G0transformed moths in fertile mothsand injected eggs were both significantly different （P=0.01368 and P=0.02398, respectively）.Thetransformation rate of the Nistari strain （Indian strain） was significantly higher than that of the other twostrains,Golden-yellow-cocoon （Vietnamese strain） and Jiaqiu （Chinese strain）,which had similar rate. Theseresults indicate that the transformation efficiency of the piggyBac-based system might vary with silkwormstrains with different genetic *** presence of endogenous piggyBac-like elements might bean important factor influencing the transformation efficiency of introduced piggyBac-derived vectors,andthe diverse amount and activation in different silkworm strains might account for the significant differences.

关键词： Bombyx mori piggyBac transposon transgenesis transformation efficiency

以“千万工程”为指引打造“青农飞地”引育新农人助力乡村振兴

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

中国共青团 2024年第7期 62-65页

作者： 1.团金华市委 2.团婺城区委团金华市委团婺城区委

习近平总书记在义乌李祖村考察调研时指出“乡村振兴为年轻人提供了展现才华的用武之地,希望更多的年轻人为乡村振兴发挥积极作用”。为深入学习贯彻习近平总书记关于实施乡村振兴战略的重要论述,共青团金华市委以“千万工程”为指引,... 详细信息

习近平总书记在义乌李祖村考察调研时指出“乡村振兴为年轻人提供了展现才华的用武之地,希望更多的年轻人为乡村振兴发挥积极作用”。为深入学习贯彻习近平总书记关于实施乡村振兴战略的重要论述,共青团金华市委以“千万工程”为指引,着力破解青年投身农创“不愿回、留不下、干不好”三个痛点、难点问题,率先在婺城区探索建设“青农飞地”省级共富试点,旨在建立政府主导、多方协同、市场化运作的青年农创枢纽平台,推动城乡之间各类创业资源和要素高效流通。

关键词：乡村振兴创业资源共富婺城区新农人飞地多方协同市场化运作

在线全文

学校读者我要写书评

暂无评论

科学流言榜

百科知识 2024年第14期 33-36页

作者： 1.新华社 2.北京协和医院新华社北京协和医院

“每月科学流言榜”由北京市科学技术协会、北京市网信办、首都互联网协会指导，北京科技记者编辑协会、北京地区网站联合辟谣平台共同发布，得到中国科普作家协会科技传播专业委员会、中国晚报科学编辑记者学会、上海科技传播协会、北...

“每月科学流言榜”由北京市科学技术协会、北京市网信办、首都互联网协会指导，北京科技记者编辑协会、北京地区网站联合辟谣平台共同发布，得到中国科普作家协会科技传播专业委员会、中国晚报科学编辑记者学会、上海科技传播协会、北京市科学技术情报研究所的支持。

关键词：

Greenhouse gas emissions from a constructed wetland for municipal sewage treatment

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2002年第1期14卷 27-33页

作者： TAI Pei dong 1, LI Pei jun 1 , SUN Tie heng 1, HE Yao wu 1, ZHOU Qi xing 1 GONG Zong qiang 1, Motoyuki Mizuochi 2, Yuhei Inamori 2 (1 Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110015, China. 2 National Insti Institute of Applied Ecology Chinese Academy of Sciences 110015 China. E-mail:[email protected] National Institute for Environmental Studies 16-2 Onagawa Tsukuba Ibaraki 305 Japan

The fluxes of greenhouse gases (methane and nitrous oxide) emission from a constructed wetland in the Eastern China as municipal sewage treatment were measured from June 1999 to August 2000 by the closed chamber method. The constructed wetland for municipal sewage treatment is a significant source of methane, up to 976 6×10 6 g CH 4/a, which was emitted from the constructed wetland with the area of 495000 m 2 and wastewater loading rate of 12000 m 3/d. Its daily mean methane flux reached 5 22 g CH 4/(m 2·d), 250 times as much as that in natural wetland in the same latitude region. 227 8 mg CH 4 was produced from the treatment of 1 liter wastewater, up to 700—1000 times as much as that in the secondary treatment. The emission of nitrous oxide from the constructed wetland is not higher than that from secondary treatment of wastewater, only 0 07 mgN 2O/L.

关键词： greenhouse gas emission constructed wetland municipal sewage methane nitrous oxide

Many-body theories of density response for a strongly correlated Fermi gas

在线全文

学校读者我要写书评

暂无评论

Frontiers of physics 2012年第1期7卷 98-108页

作者： Hui Hu (1) 1. ARC Centre of Excellence for Quantum-Atom Optics Centre for Atom Optics and Ultrafast Spectroscopy Swinburne University of Technology Melbourne 3122 Australia

Recent breakthroughs in the creation of ultracold atomic gases in the laboratory have ushered in major changes in physical science. Many novel experiments are now possible, with an unprecedented control of interaction, geometry and purity. Quantum many-body theory is facing severe challenges in quantitatively understanding new experimental results. Here, we review some recently developed theoretical techniques that provide successful predictions for density response of a strongly correlated atomic Fermi gas. These include the strong-coupling random-phase approximation theory, high- temperature quantum virial expansion, and asymptotically exact Tan relations applicable at large momentum.

关键词： quantum many-body theory Fermi gas

Copper Elimination from the Molten Steel by Addition of Hydronitrogens

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 1998年第2期12卷 93-96页

作者： Liansheng Li~(1)) Changxiang Xiang~(1)) Jie Cao~(1)) Shiqi Ii~(1)) Eiji Ichise~(2)) 1)Applied Science School, UST Beijing, Beijing 100083, China 2) The Kyoto University, Kyoto, Japan Applied Science School UST Beijing Beijing 100083 China Kyoto University Kyoto Japan

A novel method has been proposed to remove copper from molten steel by adding the compounds of hydrogen and nitrogen into the melt at normal pressure. Feasibility experiments were carried out in Mo-wire resistance furnace at 1600℃. The copper content of about 400 g 45 steel were reduced from 0.60% and 0.57% to 0.41% and 0.51% with 3.25g and 1.20 g NH_4Cl respectively, while the copper contents of about 300 g steel melt were reduced from 1.15% and 0.61% to 0.90% and 0.56% with 4.10 g and 2.00 g NH_2CONH_2. These results indicate that the proposed method is very promising to be put into practical and worthwhile of further study.

关键词： molten steel copper removal hydronitrogens

Experimental determination of interfacial energies for Ag_2Al solid solution in the CuAl_2-Ag_2Al system

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2009年第9期18卷 3952-3959页

作者： Ocak Y Akbulut S Keslioglu K Marasl1 N ad1rl1 E Kaya H Department of Physics Faculty of Arts and SciencesErciyes University Department of Physics Institute of Science and TechnologyErciyes University Department of Physics Faculty of Arts and SciencesNigde University Department of Science Education Education FacultyErciyes University

The equilibrated grain boundary groove shapes of solid solution Ag2Al in equilibrium with an AI-Cu-Ag liquid were observed from a quenched sample with a radial heat flow apparatus. The Gibbs Thomson coefficient, solid liquid interfacial energy and grain boundary energy of the solid solution Ag2Al have been determined from the observed grain boundary groove shapes. The thermal conductivity of the solid phase and the thermal conductivity ratio of the liquid phase to solid phase for Ag2Al-28.3 at the %CuAl2 alloy at the melting temperature have also been measured with a radial heat flow apparatus and Bridgman type growth apparatus, separately.

关键词： solid-liquid interfaces metals and alloys surface energy thermal conductivity

Genetic variation of Ardisia crenata in south China revealed by nuclear microsatellite

在线全文

学校读者我要写书评

暂无评论

Journal of Systematics and Evolution 2010年第4期48卷 279-285页

作者： 1,2Hong-Ping MU 1Lan HONG 1Hong-Lin CAO 1Zheng-Feng WANG 1Zhong-Chao LI 1 Hao SHEN 1Zhang-Ming WANG 1Wan-Hui YE 1(South China Botanical Garden,Chinese Academy of Sciences,Guangzhou 510650,China) 2(Graduate School of the Chinese Academy of Sciences,Beijing 100049,China) (South China Botanical Garden Chinese Academy of Sciences Guangzhou 510650 China) (Graduate School of the Chinese Academy of Sciences Beijing 100049 China)

Ardisia crenata Sims,one of the most widely distributed Ardisia in the world,is an important ornamental and medicinal plant *** seven polymorphic nuclear microsatellite loci,we studied the genetic variation of 20 natural populations of *** across its distribution center in south *** deviation from the Hardy–Weinberg equilibrium in all populations and at all loci were detected,and the fixation index was high (FIS=0.725),indicating that inbreeding may be dominant in the mixed mating system of this self-compatible *** average genetic diversity within populations was relatively low(HS=0.321).There was significant genetic differentiation among populations(FST=0.583),which may have resulted from a high level of inbreeding and a low level of gene *** crenata in south China can be roughly divided into an eastern group and a western group,consistent with the floristic division of the Sino-Himalayan forest subkingdom and the Sino-Japanese forest *** may be separated glacial refugia in each region.

关键词： differentiation genetic variation inbreeding nuclear microsatellite