检索结果-南通市图书馆

Updating verbal and visuospatial working memory: Are the processes parallel?

Chinese Science Bulletin 2008年第14期53卷 2175-2185页

作者： YUE ZhenZhu1,2, ZHANG Ming3,4 & ZHOU XiaoLin1 1 department of psychology, Peking university, Beijing 100871, china 2 Biological psychology and Neuropsychology, university of Hamburg, Von-Melle-Park 11, 20146 Hamburg, Germany 3 department of psychology, northeast normal university, changchun 130024, china 4 Key Laboratory for Applied Statistics of MOE, northeast normal university, changchun 130024, china NE normal Univ Dept Psychol Changchun 130024 Peoples R China.

The current study compared the processes of updating verbal and visuospatial working memory (WM) and examined the roles of central executive and slave systems in working memory updating tasks, by changing the number of items updated simultaneously to manipulate the load on central executive. Ex- periment 1 used the verbal WM updating task, and the results validated the efficiency of the paradigm to manipulate the load on central executive. Experiment 2 employed the verbal WM updating task, with the articulatory suppression task to interfere with the phonological loop. The results supported the study by Morris and Jones, revealing that the central executive system played an important role in the updating component of verbal WM, while the phonological loop was responsible for the serial recall component. Experiment 3 employed the visuospatial WM updating task, with the spatial tapping task to interfere with the visuospatial sketchpad. The results suggested that the visuospatial sketchpad and the central execu- tive together dealt with the updating component, while the visuospatial sketchpad was responsible for the serial recall component by itself. These results are consistent with the findings that visuospatial sketch- pad has close links with central executive, while the phonological loop is separated from the central ex- ecutive. It suggests that updating visuospatial and verbal WM are not two parallel processes.

关键词：记忆储存工作记忆中枢神经视觉性

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Finite-dimensional Lie superalgebras of Cartan type over fields of prime characteristic

引用

Chinese Science Bulletin 1997年第9期42卷 720-724页

作者： ZHANG Yongzhengdepartment of Mathematics, northeast normal university, changchun, 130024, china department of Mathematics Northeast Normal University Changchun China

IN this note the infinite-dimensional Lie superalgebras of Cartan type X(m,n)(X=W,S,H or K)over field F of prime characteristic are *** the second class of finite-dimensional Lie superalgebras of Cartan type over F is... 详细信息

关键词： exterior algebra Lie superalgebra filtration.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effect of monotoxicity and mixtoxicity of nitroaromatics to the green algae, Scienedesmus obliquus

引用

Journal of Environmental Sciences 2000年第3期12卷 367-368页

作者： LIU Jing\|ling, LANG Pei\|zheng (department of Environmental Sciences, northeast normal university, changchun 130024, china) 西北师范大学甘肃长春 1 3 0 0 2

In general, many pollutants co\|exist in natural aquatic ecosystems. They affect each other and occur different results, such as synergism, addition and antagonism. So the research at mixtoxicity of contaminants to aquatic organism is more important than monotoxicity. In this paper, 50% effectual inhibition concentration 48h \%EC\%\-\{50\} values of 6 kinds of nitroaromatic compounds to the green algae, \%Scenedesmus obliquus,\% were investigated. Mixtoxic experiments, in which any combination of 2,4\|DNT and other 6 kinds of compounds, indicate: (1) synergisms between 2,4\|DNT and 4\|NAn, as well as 4\|NAnis, 1,4\|DNB; (2) antagonisms between 2,4\|DNT and 4\|NT, as well as 4\|NPh, 4\|NCB.

关键词： monotoxicity mixtoxicity nitroaromatics green algae

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A general type of twisted anomaly cancellation formulas

引用

Science china Mathematics 2010年第7期53卷 1684-1695页

作者： WANG Yong School of Mathematics and Statistics, northeast normal university, changchun 130024, china 1. School of Mathematics and Statistics Northeast Normal University Changchun 130024 China

For even-dimensional manifolds, we prove some twisted anomaly cancellation formulas which generalize some well-known cancellation formulas. For odd dimensional manifolds, we obtain some modularly invariant characteris... 详细信息

关键词： modular invariance transgression cancellation formulas

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Foreign peptides displayed on the major coat protein of filamentous bacteriophage

引用

Chinese Science Bulletin 1998年第14期43卷 1158-1162页

作者： WANG Li Institute of Genetics and Cytology, northeast normal university, changchun 130024, china Institute of Genetics and Cytology Northeast Normal University Changchun China

The genome of filamentous bacteriophage can be engineered to display foreign peptides on the surface of the major coat protein. This display system offers an effective approach to researching the immunological recognition of protein. Studies show that this system has several advantages: 1) the specificity of the immune response; 2) the ability to recruit helper T cells; 3) needs no external adjuvants; 4) the structural mimicry of peptide epitopes. These suggest that this technology could be developed into a simple and inexpensive means to produce new biological reagents and vaccines. The development of this technology and the main property of filamentous bacteriophage are introduced in this paper. Some novel results about foreign peptides display using the main coat protein of filamentous bacteriophage are also summarized.

关键词： filamentous bacteriophage major coat protein epitope.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Z-Graded Lie Superalgebras with Depth One over Fields of Prime Characteristic

引用

Acta Mathematica Sinica,English Series 2002年第4期18卷 687-700页

作者： Yong Zheng ZHANG department of Mathematics. northeast normal university. changchun 130024. P. R. china department of Mathematics Northeast Normal University Changchun 130024 P. R. China

Let F be a field of characteristic p>3, and L=_(i≥-1) L_i the finite-dimensional transitive Z-graded simple Lie superalgebra over F. In this paper L is determined if the Z-graded Lie superalgebra L_(-1) L_O is isomo... 详细信息

关键词： Lie superalgebra Exterior algebra Field of prime characteristic

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The restricted EM algorithm under linear inequalities in a linear model with missing data

引用

Science china Mathematics 2005年第6期48卷 819-828页

作者： ZHENG Shurong, SHI Ningzhong & GUO Jianhua School of Mathematics and Statistics, northeast normal university, changchun 130024, china Institute of Mathematics, Jilin university, changchun 130012, china 1. School of Mathematics and Statistics Northeast Normal University 130024 Changchun China 2. Institute of Mathematics Jilin University 130012 Changchun China

This paper discusses the maximum likelihood estimate of β under linear inequalities A0β≥ a in a linear model with missing data, proposes the restricted EM algo rithm and proves the convergence.

关键词： EM algorithm, linear model, maximum likelihood estimate, missing data.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Removal of adhesive dusts from flue gas using corona discharges with spraying water

引用

Journal of Environmental Sciences 2003年第4期15卷 554-561页

作者： XU De\|xuan, ZHAO Jian\|wei, DING Yun\|zheng, GE Wei\|li (department of Environmental Science and Engineering, northeast normal university, changchun 130024, china. department of Knviranmental Science and Engineering Northeast Normal University Changchun 130024

Effective removal of adhesive and fine dusts from flue gas is very difficult. A new method of electrostatic precipitation of the corona discharges with spraying water(CDSW) was introduced. A new electrode configuration and the circulation spraying of water were employed in the method. The efficient electrostatic precipitation for adhesive and fine dusts can be accomplished without any drain water during a long operating period. The fundamental structure, discharge characteristics, mechanism of spraying and precipitation principle of the electrostatic precipitation using CDSW were described and analyzed. The V I characteristics, spraying state, supplying water quantity, influence of temperature and clean of the electrodes were researched in series experiments. The treating effects of circulating spraying using the corona plasma at the same time of electrostatic precipitation were investigated. The fundamental theories and experimental data were proposed, in order to effectively remove the adhesive dusts from flue gas using CDSW in practice.

关键词： aerosol with adhesive dusts corona discharges with spraying water electrostatic precipitation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Tropomyosin is localized in the nuclear matrix and chromosome scaffold of physarum polycephalum

引用

Cell Research 1999年第1期9卷 61-69页

作者： ZENG XIAN LU MING DA JIAO MIAO XING XIAO GUANG WANG SHUI HAO(Institute of Genetics and Cytology, northeast normal university, changchun 130024, china)(department of Biology, changchun normal College,changchun 130032, china) InstituteofGeneticsandCytology NortheastNormalUniversityChangchunChina.

The nuclei and chromosomes were isolated from plasmodia of Physarum polycephalum. The nuclear matrir and chromosome scaffold were obtained after the DNA and most of the proteins were extracted with DNase I and 2 M NaCl. SDS-PAGE analyses revealed that the nuclear matrir and chromosome scaffold contained a 37 kD polypeptide which is equivalent to tropomyosin in molecular weight. Immunofluorescence observations upon slide preparations labeled with anti-tropomyosin antibody showed that the nuclear matrix and chromosome scaffold emanated bright fluorescence, suggesting the presence of the antigen in *** results confirmed the presence of tropomyosin in the nuclear matrix and chromosome scaffold. Immunoelectron microscopic obserwtions further demonstrated that tropomyosin was dispersively distributed in the interphase nuclei and metaphase chromosomes.

关键词： Chromosome scaffold nuclear matrix Physarum polycephalum tropomyosin

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Construction of the Seed-Coat cDNA Microarray and Screening of Differentially Expressed Genes in Barley

引用

Acta Biochimica et Biophysica Sinica 2004年第10期36卷 695-700页

作者： Jin-Song PANG*, Meng-Yuan HE, and Bao LIU Laboratory of Molecular Epigenetics, Institute of Genetics and Cytology, northeast normal university, changchun 130024, china Laboratory of Molecular Epigenetics Institute of Genetics and Cytology Northeast Normal University

Some barley mutants can synthesize neither anthocyanins nor proanthocyanidins in the seed coat, which is related to several genes in locus Ant13, but the exact model of action remains unknown. We used the cDNA microarray technology with barley transcription-deficient mutant (ant13-152) that does not synthesize proanthocyanidins as the tester, and its wild type genotype (Triumph) as the driver, to study this question. Six-thousand and forty-eight clones from the wild type Morex testa+pericarp cDNA library were amplified using PCR, and the DNA fragments were spotted on commercial amino-modified glass slide as microarray. The mRNAs from the developing seed coat (8–15 days) of both the mutant and the wild-type barley plants were isolated, and labeled respectively with Cy3-dUTP and Cy5-dUTP when reversely trans- cribed to cDNAs. The labeled cDNAs were used as probes, mixed at the same molar concentration, and hybridized with the DNA fragments on the slide. Seventy clones exhibiting marked differential expression (ratio>4) were identified from the microarray. All the 25 cDNA clones that showed an over-expression in wild type in comparison to the mutant ant13-152 were sequenced. It was found that most of these over- expressing clones were transcription/translation and hordein-associated genes. These results have laid a solid material basis for further elucidation of the metabolic pathway in proanthocyanidin synthesis in barley and likely other plants.

关键词： barley seed coat proanthocyanidin cDNA microarray

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：