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Vacuum induced transparency and slow light phenomena in a two-level atomic ensemble controlled by a cavity

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Chinese Physics B 2015年第9期24卷 240-244页

作者：郭玉杰聂文杰 Department of Physics Tsinghua University Beijing Computational Science Research center Department of Applied Physics East China Jiaotong University

We study the optical properties of a two-level atomic ensemble controlled by a high-finesse cavity. Even though the cavity is initially in the vacuum state in the absence of external driving, the probe response of the atomic ensemble can be dramatically modified. When the collectively enhanced atom–cavity coupling is strong enough and the cavity decay rate is much smaller than the atomic damping rate, an electromagnetically induced transparency-like coherent phenomenon emerges with a dip absorption for the response of the two-level atoms in the cavity without driving, and thus is called vacuum induced transparency. We also show the slow light with very low group velocity in such an atomic ensemble.

关键词： electromagnetically induced transparency two-level atomic ensemble vacuum slow light

Carbon Starved Anther(CSA) Encoding a MYB Domain Protein Regulates Sugar Partitioning Required for Rice Pollen Development

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Carbon Starved Anther(CSA) Encoding a MYB Domain Protein Reg...

Research of WebGIS Based on SVG and Ajax Technology

2009中国植物学会植物细胞生物学学术年会

作者： Hui Zhang~(1,§),Wanqi Liang~(1§),Xijia Yang~1,Ning Jiang~2,Hong Ma~(3.4), Dabing Zhang~(1,*) 1 School of Life Science and Biotechnology,Shanghai Jiaotong University,Shanghai 200240,china 2 Department of Horticulture,Michigan State University,East Lansing,Michigan 48824, USA 3.State Key Laboratory of Genetic Engineering,Institute of Plant Biology,center for Evolutionary Biology,School of Life Sciences,Fudan University,Shanghai 20043. Institutes of Biomedical Sciences,Fudan University,Shanghai 20003.,china 4 Department of Biology,the Huck Institutes of the Life Sciences,the Pennsylvania State University,University Park,Pennsylvania 16082,USA.

In higher plants,sink tissues such as those in developing flowers with little or no photosynthetic activity rely on carbohydrates from leaf tissues(sources)for nutrition and *** carbohydrates(sugars)are actively synth... 详细信息

关键词： carbon starved anther(CAS) sugar-transporting pollen

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Research of WebGIS Based on SVG and Ajax Technology

QTL Mapping and Epistasis Analysis for Yield Traits in an RIL Population of Rice(Oryza sativa L.)

2010 2nd IEEE International Conference on Information and Financial Engineering(ICIFE2010)

作者： Feifei Yin Information & Network Management center North china Electric Power University Baoding china Lijing Zhang Information & Network Management center North china Electric Power University Baoding china

Analysising WEB Geographic Information System （WEBGIS） status,found that the existing problem in the current system,combine the SVG with the Ajax,propose a idea of constructing a new WEBGIS *** introduce a variety of techniques used,SVG technology has such characteristics as small storage space and the strong intercommunication,illustrates the possibility of using this vector graphic Specification to develop WEBGIS system;Ajax technology has the advantage of "on-demand access data",shows that WEBGIS achieved by using Ajax to realize communication between client and server has many advantages such as image quality and high transmission speed;cache technology refers to use certain scheduling algorithm to achieve the proper storage of geographic data in order to improve system ***,design a four-story WEBGIS model based on B/*** introduce the key points of the model:the principle and technology of caching technology;the specific implementation of SVG uses hierarchical to express spatial data and interact with *** in order to improve data transmission speed,the system compresses transfer data,introduce the compression algorithm used,and test the system,compare the performance changes of the ***,using SVG and Ajax techniques to achieve the WEBGIS system.

关键词： SVG Ajax WEBGIS GZIP cache

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Agricultural Sciences in china 2003年第11期2卷 1179-1186页

作者： CAO Li-yong, ZHAN Xiao-deng, ZHUANG Jie-yun, ZHENG Kang-le and CHENG Shi-hua(National center for Rice Improvement, china National Rice Research Institute, Hangzhou 3.0006 , P. R. china) National center for Rice Improvement China National Rice Research Institute Hangzhou 310006 P.R. China

A genetic linkage map consisting of 168 DNA markers was constructed based on a recombinant inbred line(RID population derived from a cross between a high yielding indica variety, Zhong156, and a low yielding indica variety, Gumeil. The markers on the linkage map were distributed on all 12 chromosomes and covered 1 447. 9 cM of the genome. The parents and 3.4 RILs were grown in china National Rice Research Institute(CNRRI), Hangzhou, china, in 2001, over two seasons in a randomized block design. The statistic software of QTL Mapper 1.01 was applied to detect quantitative trait loci(QTLs)and additive by environment(AE)interactions for yield traits, including panicle length, number of panicles per plant, number of spikelets per panicle, number of filled grains per panicle, fertility and kilo-grain weight. A total of 3. QTLs with significant additive effects located on all chromosomes, except chromosomes 5 and 9, and two QTLs with significant AE interactions, were detected. Thirty-one interactions of QTLs showing significant additive by additive epistatic effects for yield traits were also detected. Genetic contributions were generally lower for QTLs showing epistatic effects compared with QTLs showing additive effects. No significant interactions between epistasis and environment were detected.

关键词： Yield traits QTLs Additive effect Epistasis Oryza sativa L.

基于MPEG-4和PCA的人脸动画合成方法

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计算机工程与应用 2004年第10期40卷 60-64页

作者：蓝娟陈益强徐燕湖南电力调度通信中心长沙410007 中国科学院计算技术研究所数字化技术研究室北京100080 华北电力大学(北京)计算机科学与技术系北京102206

三维人脸动画技术融合了多通道交互技术和多功能感知技术,在虚拟现实、虚拟主持人、虚拟会议、辅助教学、医疗研究、电影制作、游戏娱乐等很多领域有广泛的应用。文章分析了基于MPEG-4标准的人脸动画合成方法,并针对其在实际过程中产生... 详细信息

三维人脸动画技术融合了多通道交互技术和多功能感知技术,在虚拟现实、虚拟主持人、虚拟会议、辅助教学、医疗研究、电影制作、游戏娱乐等很多领域有广泛的应用。文章分析了基于MPEG-4标准的人脸动画合成方法,并针对其在实际过程中产生的两个问题,包括人脸模式太多和局部调整带来的影响,分别采用聚类和主成分分析(PCA)的方法进行改进。实验表明基于PCA来解决局部调整人脸模式的方法可以部分实现动画过程中表情的表达,从而极大地提高了人脸动画合成的可操作性。

关键词：人脸动画合成 MPEG-4 聚类主成分分析(PCA)

Numerically Simulating of Ice Accretion on Airfoil

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Numerically Simulating of Ice Accretion on Airfoil

ANALYSIS OF CAPITAL FLOW WITH GIS——Two Approaches for Regional Investment in china

第四届亚洲CFD会议

作者： ZHU Guolin YI Xian ( china Aerodynamics Research and Development center Mianyang 621000 china)

＜正＞A method for prediction ice accretion on airfoil and their effects on the airfoil aerodynamics characteristics is described. The flow field is calculated by solving the 2D steady incompressible N-S equations with finite volume method. A 4-order Runge-Kutta method is used to solve the droplet trajectory equation. Assuming ice grows in the direction normal to the surface, rime ice shape is determinated with the assumption that all droplets freeze at their points of impact and glaze ice shape is obtained after solving the mass and energy equations that describe the thermodynamics of ice accretion. The method yields ice shapes that are in good agreement with the results found in the literature. Calculation consequences for aerodynamic properties of iced airfoil shows that ice accretion have undesirable effects on airfoil performance.

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Chinese Geographical Science 2003年第1期13卷 2-8页

作者： YAO Yong-ling ( Public Administration School, Renmin University of china, Beijing 100872, P. R. china) Public Administration School Renmin University of China Beijing 100872 P. R. China

GIS technology has been mostly concerned with handling physical data andmodeling physical environment. However, the retirements of GIS for handling socio-economicinformation in many cases are different from those concerning phenomena in the physical *** of capital flow among regions requires the transitions both from economic values tophysical landscape and from physical surface to economic explanation. Rapid growth of Chineseeconomy comes mainly from investment. There are two main ways for obtaining high growth ofinvestment. One is government expenditure which usually invests in regional facility and amenityblock, which is regarded as stimulus for attracting investment. The other is the creation ofinvesting center and corresponding capital source areas, both of which need the central city withthe highest growth rate of investment among regions. This paper presents the cluster areas of bothgovernment revenue and total investment, the potential situation of capital flow between centralcity Shanghai and its neighbor provinces by using Classification' and Interpolation' functions ofArcView GIS.

关键词： capital flow geographic information system (GIS) regional investment cluster analysis

不同结构形态的NdOHCO_3.Nd^(3.)的增强电子拉曼光谱研究

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中国稀土学报 2004年第6期22卷 734-738页

作者：王家君徐怡庄周勇熊柏青康志君崔舜赵莹周增林王笃金吴瑾光徐端夫北京有色金属研究总院国家有色金属及电子材料分析测试中心北京100088 北京大学稀土材料化学及应用国家重点实验室北京100871 中国科学院化学研究所北京100080

利用X射线粉末衍射、场发射电子扫描显微术和透射电子显微术TEM,对不同方法制备的形态、颗粒大小不同的NdOHCO3.行钕离子的增强电子拉曼光谱和FT IR光谱研究,发现结构形态不同的NdOHCO3.于配位环境变化,导致钕离子的电子拉曼光谱在260... 详细信息

利用X射线粉末衍射、场发射电子扫描显微术和透射电子显微术TEM,对不同方法制备的形态、颗粒大小不同的NdOHCO3.行钕离子的增强电子拉曼光谱和FT IR光谱研究,发现结构形态不同的NdOHCO3.于配位环境变化,导致钕离子的电子拉曼光谱在2600～1600cm-1附近拉曼谱带的峰形、峰位和峰的数目产生显著变化。

关键词：电子拉曼光谱 NdOHCO3 X射线衍射 TEM 稀土

INHIBITION OF RAT LENS ALDOSE REDUCTASE BY QUERCETAGETIN AND PATULETIN

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眼科学报 1991年第1期7卷 29-30,33页

作者： Shaozhen Li Winifred Mao Xinyuan Cao Shunwei Liang Zhongshan Ophthalmic center Sun Yat-sen University of Medical Sciences Guangzhou, china Zhou Ding Naiming Li Department of Chemistry Guangzhou Medical College Guangzhou, china Zhongshan Ophthalmic center Sun Yat-sen University of Medical Sciences Guangzhou China.

In this paper the results of inhibition of the Aldose reductase(AR) activity on Wistar rat lens by Quercetagetin extracted from Tagetes erects Linn and by Patuletin extracted from Tagetes patula Linn are *** inhibited AR of the rat lens by 93.9% at 10^(-4)M, 76.0% at 10^(-5)M and 13.3. at 10^(-6)M. Patuletin inhibited AR of the rat lens by 100% at 10^(-1)M, 80% at 10^(-5)M and 22.7% at 10^(-6)M respectively. The results show that these two flavones are lens AR Inhibitors, but further ...

关键词： INHIBITION OF RAT LENS ALDOSE REDUCTASE BY QUERCETAGETIN AND PATULETIN RAT AR