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Two new Jurassic stoneflies (Insecta: Plecoptera) from Daohugou, Inner Mongolia, China

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Progress in Natural Science:Materials International 2008年第8期18卷 1039-1042页

作者： Yushuang Liu, Dong Ren * College of Life Science, Capital Normal University, 105 Xisanhuanbeilu, haidian District, Beijing 100037, China College of Life Science Capital Normal University 105 Xisanhuanbeilu Haidian District Beijing 100037 China

Two new genera and two new species of family Taeniopterygidae, Mengitaenioptera multiramis gen. et sp. nov. and Noviramonemoura trinervis gen. et sp. nov. are described. These fossils were collected from Daohugou Village (the Middle Jurassic), Inner Mongolia, China. Hitherto, these fossil species from Daohugou are the oldest taeniopterygids. Both simple and complex venations simultaneously occurred in this group, which reveals that the early diversification of taeniopterids was well underway by the Middle Jurassic. Therefore, we prefer to adopt the Comstock’s opinion that the venation of taeniopterids was derived from the simple venation of the older group (such as Palaeonemouridae) at much ancient geological time ago. Some of the descendants carried this simple venation; others evolved into complex venation with many additional crossveins and branches.

关键词： Plecoptera Taeniopterygidae Daohugou Inner Mongolia Middle Jurassic

Chinese Journal of Spectroscopy Laboratory,Vol.25,2008,Index in the Alphabetic Order of the Primary Author Surname and Name

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光谱实验室 2009年第1期26卷 166-172页

作者： The Editorial Department,Chinese Journal of Spectroscopy Laboratory(35-204,No.13 Gaoliangqiao Xiejie haidian ,Beijing 100081)

Current Research on Paleoentomology—A Preface

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Acta Geologica Sinica(English Edition) 2010年第4期 5-8页

作者： REN Dong College of Life Science,Capital Normal University,haidian District,Beijing 100048,China

Insects,including the phylogenetically basal groups Collembola,Protura,and Diplura are termed the Hexapoda. Hexapods include over one million described species that are more diverse than all other living taxa *** cons... 详细信息

关键词： 2010 A Preface Current Research on Paleoentomology

Innovation Promotes Development,Science Generates Prosperity——7th Zhongguancun IT Festival

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China's Foreign Trade 2004年第10期 28-29页

作者： Zhou Liangluo, Head of Beijing haidian District Government

The theme "Innovation Promotes Development, Science Generates Prosperity" is not only of the 7th IT Festival but also the forever for Zhongguancun and haidian District.

关键词： Innovation Promotes Development,Science Generates Prosperity IT Zhongguancun IT Festival

Structural and Electrical Properties of Cu Films by dc Biased Plasma-Sputter-Deposited on MgO(001)

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Journal of University of Science and Technology Beijing 2001年第3期8卷 207-209页

作者： Hong Qiu, Yue Tian, Mituru Hashimoto Applied Science School, University of Science and Technology Beijing, Beijing 100083, China Beijing Keda-Tianyu Microelectronic Material Technology Development Corporation, 30 Xueyuanlu, haidian District, Beijing 10008 Univ Sci & Technol Beijing App Sci Sch Beijing 100083 Peoples R China Beijing Keda Tianyu Microelect Mat Technol Dev Co Beijing 100083 Peoples R China Univ Electrocommun Dept Appl Phys & Chem Chofu Tokyo 1828585 Japan

Cu films of30nm and 15 nm thick were deposited on MgO(001) substrates at 185℃ by dc plasma-sputtering at 1.9kv and 8 mA in pure Ar gas. A dc bias voltage Vs, of 0 V or -80 V was applied to the substrate during deposition. Structural and electrical proper-ties have been investigated by cross-sectional transmission electron microscopy (XTEM), high resolution XTEM (XHRTEM) and by measuring temperature coefficient of electrical resistance (TCR;η) in the temperature interval of-135℃ to 0 ℃. The Cu film is pol- ycrystalline at Vs= 0 V while it epitaxially grows with Cu(00 )|| MgO(00 1) and Cu[0 10] || MgO[010] at Vs,=-80 V. However, the latter has a very rough surface. The change of η with film thickness and Vs is interpreted in terms of the structure change. Misfit dislocations and lattice expansion are induced along the MgO surface to relax the strain energy due to the lattice mismatch between Cu and MgO.

关键词： Cu film biased plasma-sputter-deposition misfit dislocations TCR XHRTEM

Fosmid library screening of cotton restorer lines E5903 mitochondrial genome

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Fosmid library screening of cotton restorer lines E5903 mito...

From Physical Space to Visual Image Space

第十三届全国植物基因组学大会

作者： Shuangshuang Li,Zhiwen Chen~* China Agricultural University,Beijing 100193,haidian

In this paper,a Fosmid library of restorer lines E5903 mitochondrial genome was *** mitochondrial DNA was isolated by sucrose density gradient centrifugation *** DNA was randomly sheared and cloned into pCC1FOS vector,recombinant DNA was packaged with the Lambda Packaging Extracts,then transfected into *** strain *** best sheared parameter employed in the

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来源： cnki会议评论

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Geo-Spatial Information Science 2003年第2期6卷 42-47页

作者： YE Zetian LIN Hui LIU Xianlin YE Zetian, Ph.D, Chinese Academy of Surveying and Mapping, 16 Beitaiping Road, haidian District, Beijing 100039, China. Chinese Academy of Surveying and Mapping

The theoretical framework of visual simulation in virtual reality is discussed. The new concept of visual image space is supposed. On the basis of visual image space, in visual perceptive sense, VR is considered as a spatial simulation. The objective of the spatial simulation is to transform physical space to visual image space. Last, the prototype system, surveying & mapping virtual Reality (SMVR), is developed, and the space simulation above is realized. By use of SMVR, the real 3D representation, 3D visual analysis, virtual plan and designs can be implemented.

关键词： virtual reality physical space visual image space space of earth surface space simulation

Reducing the core loss of amorphous cores for distribution transformers

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Progress in Natural Science:Materials International 2012年第3期22卷 244-249页

作者： Deren Li, Liang Zhang, Guangmin Li, Zhichao Lu, Shaoxiong Zhou China Iron & Steel Research Institute Group, Advanced Technology and Materials Co., Ltd., No. 76, Xueyuan Nan Rd., haidian District, Beijing 100081, China China Iron & Steel Research Institute Group Advanced Technology and Materials Co. Ltd. No. 76 Xueyuan Nan Rd. Haidian District Beijing 100081 China

Although amorphous alloy ribbons have lower core loss, serious loss deterioration occurs in amorphous cores constructed from amorphous alloy ribbon for distribution transformer. In the present study, the loss deterioration mechanism and influencing factors of amorphous cores for distribution transformers were investigated. The influence of distributed gaps on core loss of transformer core was calculated by simulation software and validated by experiments. The boron fluctuation of amorphous alloy ribbons affects the annealing temperature of amorphous transformer cores. A superior core annealing technique with annealing parameters was developed, and appreciable decrease in core loss was obtained.

关键词： Amorphous core Annealing technique Reducing core loss Loss deterioration Distribution transformer

Vertical Diastrophic Movement of the Continental Blocks in Eastern China

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Continental Dynamics 1999年第1期 78-83页

作者： CHANGXiaotao and HUJianguo Chinese Academyof Surveying and Mapping, Beitaiping Rd .16, haidian District, Beijing 100039 , China

The mechanism of diastrophic movementin eastern Chinaisstudied in this articlecombiningtheresult of precise leveling with *** Qinling Dabie tectonic line and Tanlu fault are two of the mostimportantstructuresthatcontrolthetectonic movementin eastern *** Yangtze block is rising, while the North China block and the Northeast China block are sinking. The Qinling Dabie tectonic line is the boundary ofthe Yangtze block ,but east of the Tanlu faultthe Qinling Dabie tectonic line is switched to the Qingdao Wulian fault(in Shandong province of eastern China) .The result of precise leveling indicates thatthe Qinling Dabie collisionalorogenic beltgive evidences ofrejuvenation .Although the Tanlu fault was ever aleft hand strike slipping faultin the history ,itis now a right hand strike slipping fault.

关键词： vertical diastrophic movement leveling Tanlu fault Qinling Dabie tectonic line