检索结果-南通市图书馆

Origin and evolution of new exons in the rodent zinc fingerprotein 39 gene

Chinese science Bulletin 2005年第11期50卷 1126-1130页

作者： PENG Lixin ZHENG Hongkun LI Xin YANG Shuang CHEN Hong WANG Wen College of Animal science and Technology Northwest Sci-Tech Uni-versity of Agriculture and ForestryYangling 712100China CAS-Max Planck Junior scientist Group Key Laboratory of Cellular and Molecular EvolutionKunming Institute of ZoologyChinese Academy of SciencesKunming 650223China Beijing institute of Genomics Chinese Academy of SciencesBeijing 101300China Graduate School of the Chinese Academy of sciences Beijing 100039 China institute of Cellular and Molecular Biology Xuzhou Normal Univer-sityXuzhou 221116China

The origin of new structures and functions is an important process in evolution. In the past decades, we have obtained some preliminary knowledge of the origin and evo- lution of new genes. However, as the basic unit of genes, the origin and evolution of exons remain unclear. Because young exons retain the footprints of origination, they can be good materials for studying origin and evolution of new exons. In this paper, we report two young exons in a zinc finger protein gene of rodents. Since they are unique sequences in mouse and rat genome and no homologous sequences were found in the orthologous genes of human and pig, the young exons might originate after the divergence of primates and rodents through exonization of intronic sequences. Strong positive selection was detected in the new exons between mouse and rat, suggesting that these exons have undergone significant functional divergence after the separation of the two species. On the other hand, population genetics data of mouse dem- onstrate that the new exons have been subject to functional constraint, indicating an important function of the new exons in mouse. Functional analyses suggest that these new exons encode a nuclear localization signal peptide, which may me- diate new ways of nuclear protein transport. To our knowl- edge, this is the first example of the origin and evolution of young exons.

关键词：核苷酸序列啮齿动物动物起源动物进化蛋白质因子

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

Preface

引用

science China Chemistry 2012年第9期55卷 1697-1698页

作者： Chai ZhiFang Wei YueZhou Chinese Acad sci Inst High Energy Phys Beijing 100864 Peoples R China Alexander von Humboldt Fdn Berlin Germany Univ Cologne Cologne Germany Tohoku Univ Sendai Miyagi 980 Japan Shanghai Jiao Tong Univ Sch Nucl Sci & Technol Natl People Program 1000 Shanghai Peoples R China

Nuclear fuel cycle chemistry is a growing interdisciplinary field that includes radiochemistry, nuclear chemistry, and radiation chemistry. It covers a diverse range of topics in- cluding the basic chemistry of actinides and fission products, nuclear chemistry and radiochemistry related to the nuclear fuel cycle, separation science, and isotope production. As a high-density form of energy that has almost no as- sociated discharge of greenhouse gases, nuclear energy plays a pivotal role in long-term energy security and the prevention of global warming. Although the accident at the Fukushima nuclear power plant has raised intense public concern about the safety of nuclear energy around the world, we believe that nuclear energy is still an inevitable option to ensure energy supply and to reduce carbon emissions in many countries. However, to realize the sustainable devel- opment of nuclear energy in the future it is necessary to maximize uranium resources and minimize radioactive waste. An advanced nuclear fuel cycle can efficiently use uranium resources and reduce the volume and radiotoxicity of nuclear waste, thus greatly contributing to the peaceful use of nuclear power by mankind.

关键词：核燃料循环放射化学温室气体排放全球气候变暖同位素生产可持续发展废物最小化裂变产物

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

Melatonin activates the OsbZIP79–OsABI5 module that orchestrates nitrogen and ROS homeostasis to alleviate nitrogen-limitation stress in rice

引用

Plant Communications 2023年第6期4卷 113-133页

作者： Meng Jiang Yue Song Ruifang Yang Chenfan Zheng Yunchao Zheng Huali Zhang Shan Li Yuanyuan Tan Jianzhong Huang Qingyao Shu Ruiqing Li Hainan institute Zhejiang UniversityYazhou Bay Sci-Tech CitySanyaChina National Key Laboratory of Rice Breeding and Biology and Zhejiang Provincial Key Laboratory of Crop Germplasm The Advanced Seed InstituteZhejiang UniversityHangzhouChina College of Agronomy Anhui Agricultural UniversityHefeiChina Crop Breeding and Cultivation Research institute Shanghai Academy of Agricultural SciencesShanghaiChina School of Life sciences Westlake UniversityHangzhouChina State Key Laboratory of Rice Breeding and Biology and Chinese National Center for Rice Improvement China National Rice Research InstituteHangzhouChina

Melatonin(Mel)has previously been reported to effectively alleviate nitrogen-limitation(N-L)stress and thus increase nitrogen-use efficiency(NUE)in several plants,but the underlying mechanism remains ***,we revealed that OsbZIP79(basic LEUCINE ZIPPER 79)is transcriptionally activated under N-L conditions,and its expression is further enhanced by exogenous *** the combined use of omics,genetics,and biological techniques,we revealed that the OsbZIP79–OsABI5(ABsciSIC ACID INSENSITIVE 5)module stimulated regulation of reactive oxygen species(ROS)homeostasis and the uptake and metabolismof nitrogen under conditions of indoor nitrogen limitation(1/16 normal level).OsbZIP79 activated the transcription of OsABI5,and OsABI5 then bound to the promoters of target genes,including genes involved in ROS homeostasis and nitrogen metabolism,activating their *** module was also indispensable for upregulation of several other genes involved in abscisic acid catabolism,nitrogen uptake,and assimilation under N-L and Mel treatment,although these genes were not directly transactivated by *** experiments demonstrated that Mel significantly improved rice growth under low nitrogen(L-N,half the normal level)by the same mechanism revealed in the nitrogen-limitation *** application produced a 28.6%yield increase under L-N and thus similar increases in ***,two OsbZIP79-overexpression lines grown in L-N field plots had significantly higher NUE(+13.7%and+21.2%)than their wild ***,our data show that an OsbZIP79–OsABI5 module regulates the rice response to N insufficiency(N limitation or low N),which is important for increasing NUE in rice production.

关键词： melatonin peroxidase nitrogen starvation allantoinase ROS signaling

来源：

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

The GW2-WG1-OsbZIP47 pathway controls grain size and weight in rice

引用

Molecular Plant 2021年第8期14卷 1266-1280页

作者： Jianqin Hao Dekai Wang Yingbao Wu Ke Huang Penggen Duan Na Li Ran Xu Dali Zeng Guojun Dong Baolan Zhang Limin Zhang Dirk Inze Qian Qian Yunhai Li State Key Laboratory of Plant Cell and Chromosome Engineering CAS Centre for Excellence in Molecular Plant BiologyInstitute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing 100101China College of Life sciences and Medicine Zhejiang Sci-Tech UniversityHangzhou 310018China State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China Ghent University Department of Plant Biotechnology and Bioinformatics9052 GhentBelgium VIB Center for Plant Systems Biology 9052 GhentBelgium University of Chinese Academy of sciences Beijing 100039China

Regulation of seed size is a key strategy for improving crop yield and is also a basic biological ***,the molecular mechanisms by which plants determine their seed size remain ***,we report that the GW2-WG1-OsbZIP47 regulatory module controls grain width and weight in ***1,which encodes a glutaredoxin protein,promotes grain growth by increasing cell ***,WG1 interacts with the transcription factor OsbZIP47 and represses its transcriptional activity by associating with the transcriptional co-repressor ASP1,indicating that WG1 may act as an adaptor protein to recruit the transcriptional *** contrary,OsbZIP47 restricts grain growth by decreasing cell *** studies reveal that the E3 ubiquitin ligase GW2 ubiquitinates WG1 and targets it for *** analyses confirm that GW2,WG1,and OsbZIP47 function in a comm on pathway to control grain *** together,ourfindi ngs reveal a genetic and molecular framework for the control of grain size and weight by the GW2-WG1-OsbZIP47 regulatory module,providing new targets for improving seed size and weight in crops.

关键词： rice WG1 GW2 OsbZIP47 grain size and weight cell proliferation

来源：

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

Machine learning for semiconductors

引用

Chip 2022年第4期1卷 66-81页

作者： Duan-Yang Liu Li-Ming Xu Xu-Min Lin Xing Wei Wen-Jie Yu Yang Wang Zhong-Ming Wei State Key Laboratory of Superlattices and Microstructures Institute of Semicon-ductorsChinese Academy of SciencesBeijing 100083China Computer Net-work Information Center Chinese Academy of SciencesBeijing 100083China College of Mathematics and Physics Beijing University of Chemical Technol-ogyBeijing 100029China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChi-nese Academy of SciencesShanghai 200050China Center of Materials sci-ence and Optoelectronics Engineering University of Chinese Academy of Sci-encesBeijing 100049China

Thanks to the increasingly high standard of electronics,the semiconductor material science and semiconductor manufacturing have been booming in the last few decades,with massive data accumulated in both *** analyzed effectively,the data will be conducive to the discovery of new semiconductor materials and the development of semicondulctor ***,machine learning,as a fast-growing tool from computer science,is expected to significantly speed up the data *** recently years,many researches on machine learning study of semiconductor materials and semiconductor manufacturing have been *** article is aimed to introduce these progress and present some prospects in this field.

关键词： learning massive manufacturing

来源：

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

Practice and Research on Construction of basic Life Security Program for Land-Expropriated Farmers in China

引用

Chinese Business Review 2003年第4期2卷 60-66页

作者： Cuiying Yang Yonghui Zhang Zuhui Huang Associate Professor in Center for Agricultural and Rural Development （CARD） of Zhejiang University. Specialized in rural social security Northwest sci-Tech University of Agriculture and Forestry. Specialized in rural finance and investment Professor in CARD of Zhejiang University. Specialized in rural urbanization and agricultural industrialization

To set up basic life security program （BLSP） for land-expropriated farmers in the process of urbanization is an effective measure to solve existing issues in China. Theprogram, which Zhejiang Province initiated in the world, has great significance. Through deep investigation in ten cities, the thesis has normatively evaluated current situations, characteristics, advantages and disadvantages of basic life security program for land-expropriated farmers in Zhejiang. Furthermore, it put forward some academic suggestions to further perfect and improve the system.

关键词： Land-expropriated Farmer Life Security Program Social Insurance Urbanization Zhejiang

来源：

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

Quantitative estimation of the influence factors on snow/ice albedo

引用

Research in Cold and Arid Regions 2020年第2期12卷 83-94页

作者： ZhongMing Guo NingLian Wang BaoShou Shen ZhuJun Gu HongBo Wu YuWei Wu AnAn Chen Xi Jiang Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity Xi'anShannxi 710127China institute of Earth Surface System and Hazards College of Urban and Environmental SciencesNorthwest UniversityXi'anShannxi 710127China School of Environmental science Nanjing Xiaozhuang UniversityNanjingJiangsu 211171China School of History and Tourism Shaanxi Sci-Tech UniversityHanzhongShannxi 723000China Key Laboratory of Meteorological Disaster of Ministry of Education Nanjing University of Information Science&TechnologyNanjingJiangsu 210000China

Quantitative estimation of the influence of various factors,such as black carbon,snow grain,dust content,and water con tent on albedo is essential in obtaining an accurate *** this paper,field measurement data,including snow grain size,density,liquid water content,and snow depth was *** carbon and dust samples were collected from the snow surface.A simultaneous observation using ASD(Analytical Spectral Devices)spectral data was employed in the Qiyi glacier located on Qilian *** measurements were compared with results obtained from the Snow,Ice,and Aerosol Radiation(SNICAR)***,a HYbrid Single-Particle Lagrangian Integrated Trajectory(HYSPLIT)air mass backward trajectory model was used to track the source of black *** simulation was found to correlate well with observed *** water content was the most influential factor of albedo among the several influencing fac tors,followed by black carbon content and snow grain ***,snow density change had the least toward *** atmospheric trajectories model can only approximately show the source of black carbon and not clearly indicate the source region of black carbon.

关键词： albedo black carbon snow grain size quantitative estimation

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

Nonreciprocal transition between two nondegenerate energy levels

引用

Photonics Research 2021年第5期9卷 879-886页

作者： XUNWEI XU YANJUN ZHAO HUI WANG AIXI CHEN YU-XI LIU Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Key Laboratory for Matter Microstructure and Function of Hunan ProvinceDepartment of Physics and Synergetic Innovation Center for Quantum Effects and ApplicationsHunan Normal UniversityChangsha 410081China Department of Applied Physics East China Jiaotong UniversityNanchang 330013China Key Laboratory of Opto-electronic Technology Ministry of EducationBeijing University of TechnologyBeijing 100124China Center for Emergent Matter science(CEMS) RIKENWakoSaitama 351-0198Japan Department of Physics Zhejiang Sci-Tech UniversityHangzhou 310018China institute of Microelectronics Tsinghua UniversityBeijing 100084China Frontier science Center for Quantum Information Beijing 100084China

Stimulated emission and absorption are two fundamental processes of light–matter interaction, and the coefficients of the two processes should be equal. However, we will describe a generic method to realize the significant difference between the stimulated emission and absorption coefficients of two nondegenerate energy levels, which we refer to as a nonreciprocal transition. As a simple implementation, a cyclic three-level atom system, comprising two nondegenerate energy levels and one auxiliary energy level, is employed to show a nonreciprocal transition via a combination of synthetic magnetism and reservoir engineering. Moreover, a single-photon nonreciprocal transporter is proposed using two one-dimensional semi-infinite coupled-resonator waveguides connected by an atom with nonreciprocal transition effect. Our work opens up a route to design atom-mediated nonreciprocal devices in a wide range of physical systems.

关键词： transition. effect. reciprocal

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

Single Photon Detection of InGaAs/InP APD Based on Gated-mode Operation at Telecom Wavelengths

引用

Semiconductor Photonics and Technology 2005年第2期11卷 73-77页

作者： LIAOChang-jun WANGJin-dong LüHua PENGXiao-dong GUOJian-ping LIRi-hao ZHAOFeng WEIZheng-jun ZHOUJin-yun FENGJin-yuan LIUWei-ping LIUSong-hao SchoolofInform.andOpto-Electron.sci.andEng. SouthChinaNormalUniversityGuangzhou510631CHN Dept.ofAppl.Phys. SouthChinaUniversityofTechnologyGuangzhou510641CHN IndustrialUniversityofGuangdong Guangzhou510090CHN Dept.ofElectron.Eg. JinanUniversityGuangzhou510632CHN

Based on the commercially available avalanche photodiodes, the basic needs of gated-mode operation for single photon are discussed. Gated-mode technique based on the experimental data for detection of single photon is analyzed at communication wavelengths so that the basic operation parameters can decide properly for efficient detection of single photon. The bias voltage has related to the punch-through voltage in combining the cooling technique with synchronization to decrease the dark counts.

关键词： single photon detector gated-mode quantum optics

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

Research Progress in Surface and Marine Gravimetry

引用

测绘学报:英文版 2023年第3期6卷 19-32页

作者： Heping SUN Lifeng BAO Shi CHEN Xiaoming CUI Qianqian LI Lulu JIA Jianqiao XU Jiangcun ZHOU Minzhang HU Yiqing ZHU Xiaodong CHEN Lin WU Jiancheng HAN Honglei LI Miaomiao ZHANG Linhai WANG Innovation Academy for Precision Measurement science and Technology Chinese Academy of SciencesWuhan 430077China State Key Laboratory of Geodesy and Earth’s Dynamics Innovation Academy for Precision MeasurementUniversity of Chinese Academy of Sci-encesBeijing 100049China institute of Geophysics China Earthquake AdministrationBeijing 100081China Beijing Baijiatuan Earth sciences National Observation and Research Station Beijing 100095China institute of Seismology China Earth-quake AdministrationWuhan 430071China Second Monitoring Center China Earthquake AdministrationXi’an 710054China

Gravity field is the most basic physical field generated by the material properties of the Earth *** reflects the spatial distribution,movement and change of materials determined by the interaction and dynamic process inside the *** the years,a variety of technical means have been used to detect the Earth’s gravity field and supported numerous studies on the global change,resource detection,geological structure movement,water resources change and other related fields of *** is part of the progress in surface and marine gravimetry obtained by Chinese geodesy scientists from 2019 to 2023 from the following aspects,including:①Continuous gravity network in Chinese mainland;②Application of superconducting gravity measurement;③Network adjustment for continental-scale gravity survey campaign and data quality control;④Regional time-variable gravity field and its application;⑤Research progress on novel technologies for gravity inversion;⑥Research progress on marine gravity field determination;⑦Application research on marine gravity field.

关键词： surface and marine gravimetry time-variable gravity field geodynamics gravity inversion

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

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：