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Development of the axon terminals of horizontal cells in the mouse retina

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Development of the axon terminals of horizontal cells in the...

Polar Optical Vibration Modes in Semiconductor Superlattices

中国神经科学学会第六届学术会议暨学会成立十周年庆祝大会

作者： Wang Yi-jin ,He Shi-gang institute of Biophysics chinese academy of sciences, beijing 100101, china

＜正＞Objective: To examine the development of axon terminals of horizontal cells in the mouse retina during early postnatal stage, and to find out the difference of this process between rd/rd mouse and wild

关键词： horizontal cells development retina mouse

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Tsinghua Science and Technology 1998年第1期3卷 43-56页

作者： Kun Huang, Bang fen Zhu institute of Semiconductors, chinese academy of sciences P. O. Box 912, beijing 100083, china institute of Semiconductors Chinese Academy of Sciences P.O. Box 912 Beijing 100083 China

The investigation of the polar optical vibration modes in semiconductor superlattices by different models are reviewed. It is emphasized that the simple analytic representations of the lattice modes calculated with the dipole oscillator model have introduced the double boundary condition that both the electrostatic potential and optical displacement vanish at the interfaces and have found wide acceptance. They have been referred to as the Huang Zhu model. It is pointed out that its improved simulation version is essentially the dielectric continuum model taking account of phonon dispersion and subject to the double boundary condition.

关键词： semiconductor superlattices polar phonon modes electron phonon Frohlich interaction

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The Interfacial Effect on the Optical Properties of Nanocrystals

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The Interfacial Effect on the Optical Properties of Nanocrys...

SYNTHESES OF AZETIDINES VIA PHOTOCYCLOADDITION OF C=C TO C=N DOUBLE BONDS

2003年纳米和表面科学与技术全国会议

作者： Bingsuo ZOU (Nanoscale Physics and Device Laboratory, institute of Physics, chinese academy of sciences, beijing 100080, china)

The interfacial environments of nanocrystal have an significant influences on its optical properties of nanocrystals. A variety of spectroscopic techniques are used to study the electronic structure and optical properties of nano-silicon, CdS QDs and Fe2O3 nanocrystals different surface capping. Experimental results indicate that interfacial polaronic effect play an important role in the luminescence of semiconductor QDs, and this effect gets

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影像科学与光化学 1995年第3期 248-250页

作者： FENG JUN MING YANG-FU FAN MEI-GONG(institute of Photographic Chemistry,the chinese academy of Sciemes,beijing 100101,P.R.china)

ＳＹＮＴＨＥＳＥＳＯＦＡＺＥＴＩＤＩＮＥＳＶＩＡＰＨＯＴＯＣＹＣＬＯＡＤＤＩＴＩＯＮＯＦＣ＝ＣＴＯＣ＝ＮＤＯＵＢＬＥＢＯＮＤＳ￥ＳＹＮＴＨＥＳＥＳＯＦＡＺＥＴＩＤＩＮＥＳＶＩＡＰＨＯＴＯＣＹＣＬＯＡＤＤＩＴＩＯＮＯＦ... 详细信息

ＳＹＮＴＨＥＳＥＳＯＦＡＺＥＴＩＤＩＮＥＳＶＩＡＰＨＯＴＯＣＹＣＬＯＡＤＤＩＴＩＯＮＯＦＣ＝ＣＴＯＣ＝ＮＤＯＵＢＬＥＢＯＮＤＳ￥ＳＹＮＴＨＥＳＥＳＯＦＡＺＥＴＩＤＩＮＥＳＶＩＡＰＨＯＴＯＣＹＣＬＯＡＤＤＩＴＩＯＮＯＦＣ＝ＣＴＯＣ＝ＮＤＯＵＢＬＥＢＯＮ...

关键词： azauracil photocycloaddition regioselectivity

Estimating fisheye camera parameters from homography

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Science china(Information sciences) 2012年第9期55卷 2119-2127页

作者： ZHU HaiJiang 1,YANG Ping 2 & LI ShiGang 3 1 School of Information Science and Technology,beijing University of Chemical Technology,beijing,10002.,china 2 National institute of Metrology,100013,beijing,china 3 Department of Electrical and Electronic Engineering,Tottori University,680-8552,Koyama,Tottori,Japan School of Information Science and Technology Beijing University of Chemical Technology Beijing China National institute of Metrology Beijing China Department of Electrical and Electronic Engineering Tottori University Koyama Tottori Japan

This paper presents a method to linearly estimate fisheye camera model parameters from the homography induced by the space plane between two fisheye *** homography is firstly calculated by using four feature points,instead of three points on the same line,in the fisheye *** the constraint on the model parameters of fisheye camera can be derived from the homography under the assumption that fisheye camera model is a polynomial *** the model parameters for different order polynomials are *** proposed technique requires only multiple fisheye images to include a planar scene and need not a priori knowledge of 3D coordinate of the planar *** results with synthetic data and real fisheye images demonstrate the validity of our *** method can also be extended to fisheye image of other planar scene excluding the planar calibration object.

关键词： homography parameter estimation fisheye camera

一个一维周期驱动哈密顿系统的实例及混沌控制

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物理学报 2001年第8期50卷 1434-1439页

作者：李伟陈式刚中国工程物理研究院北京研究生部北京2101信箱北京100088 北京应用物理和计算数学研究所北京100088

提出一种新的周期驱动非线性不可积哈密顿系统模型 ,并对其特性进行了讨论 .通过简单的非反馈控制装置对这一系统进行混沌控制 ,将其混沌轨道分别控制在周期 ,准周期及指定混沌轨道上 .与以往的控制方法不同的是 ,控制项仅是一结构简单... 详细信息

提出一种新的周期驱动非线性不可积哈密顿系统模型 ,并对其特性进行了讨论 .通过简单的非反馈控制装置对这一系统进行混沌控制 ,将其混沌轨道分别控制在周期 ,准周期及指定混沌轨道上 .与以往的控制方法不同的是 ,控制项仅是一结构简单、可调节的限位装置 .

关键词：哈密顿系统混沌控制周期驱动

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MALIGNANT TRANSFORMATION OF HUMAN FETAL LUNG FIBROBLASTS INDUCED BY NITROSAMINE COMPOUNDS IN VITRO

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Science in china,Ser.B 1986年第11期29卷 1192-1200页

作者：黄明王志华王秀琴吴旻 Cancer institute chinese academy of Medical sciences beijing

This report, for the first time, demonstrates that diethyl-nitrosamine (NDEA) and a new nitrosamine compound-N-l-methylacetonyl-N-3-methylbutyl-nitrosamine (MAMBNA), which are suspicious carcinogens of esophageal cancer (EC) in Linxian, Henan Province, are able to cause the malignant transformation (altered morphology, extended life span, anchorage independent growth, invasiveness, tumorigenicity, etc.) of normal diploid fibroblasts derived from human fetal lung. Besides, the preselection for clonogenic cells, which seem to be more readily to be transformed, in soft agar before carcinogen treatment, could be considered as one of the useful ways in establishment of a model system of malignant transformation of human fibroblasts in vitro.

关键词： MALIGNANT TRANSFORMATION OF HUMAN FETAL LUNG FIBROBLASTS INDUCED BY NITROSAMINE COMPOUNDS IN VITRO CES NDEA

CRISPR／Cas9在丝状真菌基因组编辑中的应用

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遗传 2017年第5期39卷 355-367页

作者：李红花刘钢中国科学院微生物研究所真菌学国家重点实验室北京100101 中国科学院大学北京100049

丝状真菌(filamentous fungi)通常指那些菌丝体较发达且不产生大型肉质子实体结构的真核微生物。丝状真菌不仅在自然界物质循环中发挥着重要作用,还与人类健康和工农业生产有着紧密的联系。然而,对丝状真菌进行遗传操作相对困难,极大地... 详细信息

丝状真菌(filamentous fungi)通常指那些菌丝体较发达且不产生大型肉质子实体结构的真核微生物。丝状真菌不仅在自然界物质循环中发挥着重要作用,还与人类健康和工农业生产有着紧密的联系。然而,对丝状真菌进行遗传操作相对困难,极大地妨碍了丝状真菌的遗传学研究。成簇的规律间隔的短回文重复序列及其相关系统(clustered regulatory interspaced short palindromic repeats/CRISPR-associated protein 9,CRISPR/Cas9)是近年来发现的一种存在于细菌和古菌中保守的获得性免疫防御机制。最近,CRISPR/Cas9被开发成为了一种方便灵活的基因组编辑技术。目前,该技术已经广泛应用在不同物种的基因组编辑中。本文概述了CRISPR/Cas9在丝状真菌基因组编辑中的应用进展,旨在为开展该领域的研究工作提供参考。

关键词：丝状真菌 CRISPR/Cas9 基因组编辑应用

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New Silarylene-siloxane-acetylene Polymers Synthesized by Sonogashira Cross-coupling Reactions

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New Silarylene-siloxane-acetylene Polymers Synthesized by So...