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Mitochondrial Genome Evolution in Early Land Plants

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Mitochondrial Genome Evolution in Early Land Plants

Synchronized oscillation in a modular neural network composed of columns

2.09整合植物生物学研讨会

作者： Jiayu Xue~(1,2.,Yang Liu~1,Bin Wang~(1,2.,Libo Li~1,Peng Cui~3.Jun Yu~3.and Yin-Long Qiu~(1*) 1 Department of Ecology & Evolutionary Biology,University of Michigan,Ann Arbor,MI 48109-1048, USA 2.School of Life Sciences,Nanjing University,Nanjing 2.0093.china 3.beijing Genomics Institute,the chinese {3. of Sciences,beijing 1013.8,china.

Plant mitochondrial genomes have been known for a long time to be highly unusual in both genome structure and sequence ***,only two early land plant(one liverwort and one moss)mitochondrial genomes have been sequenced...

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Science china(Life Sciences) 2005年第1期48卷 6-17页

作者： LI Su, Ql Xianglin, HU Hong & WANG Yunjiu Laboratory for Visual Information Processing, Institute of Biophysics, chinese {2. of Sciences, {3. 100101, china Institute of Computing Technology, chinese {2. of Sciences, {3. 100080, china Laboratory for Visual Information Processing Institute of Biophysics Chinese Academy of Sciences Beijing100101 China Institute of Computing Technology Chinese Academy of Sciences Beijing100080 China

The columnar organization is a ubiquitous feature in the cerebral cortex. In this study, a neural network model simulating the cortical columns has been constructed. When fed with random pulse input with constant rate, a column generates synchronized oscillations, with a frequency varying from 3.to 43.Hz depending on parameter values. The behavior of the model under periodic stimulation was studied and the input-output relationship was non-linear. When identical columns were sparsely interconnected, the column oscillator could be locked in synchrony. In a network composed of heterogeneous columns, the columns were organized by intrinsic properties and formed partially synchronized assemblies.

关键词： cortical column, synchronized oscillation, Rose-Hindmarsh model.

华北土石山区水源保护林小流域土壤侵蚀过程的模拟研究

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土壤学报 2004年第6期41卷 864-869页

作者：秦永胜刘松余新晓王小平周金星北京市林业局北京100029 北京林业大学水土保持学院北京100083 中国林业科学研究院林业研究所北京100091

根据对试验流域土地利用现状的实地调查 ,在GIS技术的支持下 ,结合林冠截留模型、枯落物糙率系数模型、SCS水文模型、径流小区产沙量经验模型、栅格单元泥沙输移量模型 ,以试验流域空间数据库和属性数据库为基本参数输入 ,对试验流域 1... 详细信息

根据对试验流域土地利用现状的实地调查 ,在GIS技术的支持下 ,结合林冠截留模型、枯落物糙率系数模型、SCS水文模型、径流小区产沙量经验模型、栅格单元泥沙输移量模型 ,以试验流域空间数据库和属性数据库为基本参数输入 ,对试验流域 1996～ 1998年 8场典型降雨土壤侵蚀量的空间分布进行了模拟。模拟结果显示 ,裸荒地场降雨产沙量占场降雨侵蚀总量的 92. 4 7%～ 10 0 % ,水源保护林地 (包括刺槐和油松林地 )的产沙量占总侵蚀量的 15 2.3.～ 7 5 3. ,水源保护林的土壤侵蚀控制效应非常显著。对试验流域 1997 0 7 3.和 1998 0 7 0 5两场典型降雨径流量和侵蚀量的模型检验显示 ,模拟误差分别为 - 3.2.4 %、+10 %和 +3. 3.、+3. 3.%。

关键词：水源保护林产沙量土壤侵蚀侵蚀量小流域试验径流小区水文模型华北栅格

Summary on Study of Ecologic Capital

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Systems Science and Systems Engineering 2000年第3期10卷 308-314页

作者： FAN Jin 1,\ BAO Zhen\|qiang 2.\ ZHOU Zhong\|min 2.\ SHEN Jie 2.1.Institute of Systems Science & Systems Engineering chinese academy of Sciences, {2. 100080 2.Yangzhou University, Yangzhou 2.5009

Based on studying a large number of related references on economics and ecologic economics, this paper makes a systematic analysis on the problems of ecologic capital, which includes its definition, content, research... 详细信息

关键词： ecologic capital green national accounting economic growth

Architecture of HIKEC:An IMS-based Mobile P2. File Sharing Service

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Architecture of HIKEC:An IMS-based Mobile P2P File Sharing S...

Life history characteristics and population prediction of the alien Pelteobagrus fuividraco (Richardson,1846) in Lake Fuxian,china

2.06 10th International Conference on Communication Technology（ICCT 2.06）

作者： Xiaozhou Ye/Jiandong Zhang Graduate School chinese academy of Sciences Institute of Acoustics chinese academy of Sciences beijing china Jinlin Wang Institute of Acoustics chinese academy of Sciences beijing china

P2. services develop rapidly in Internet where the P2. traffic has surpassed Web. Providing P2. services in the mobile network is becoming a big opportunity but also challenge for mobile operators. Considering both characteristics of mobile network and P2. mode, the architecture of HIKEC, an IMS-based mobile P2. file sharing service, is proposed in this paper. The hybrid Napster + Chord overlay network with good scalability is implemented. The IMS-based infrastructure is discussed. Standard SIP protocol is used as the control signaling enabling quick deployment in IMS and guaranteeing the continuity of mobile P2. service.

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Life history characteristics and population prediction of th...

Vertical Distribution and Seasonal Fluctuation of Nematode Trophic Groups as Affected by Land Use

中国海洋湖沼动物学会鱼类学分会第七届会员代表大会暨朱元鼎教授诞辰110周年庆学术研讨会

作者： X.Li~(1,2. Y.Chen~1 1.Institute of Hydrobiology,chinese academy of Sciences,Wuhan,{2. 2.Graduate School of chinese academy of Sciences,beijing,{2.

Pelteobagrus fulvidraco were introduced unintentionally to the Lake Fuxian as alien specie about the 1990s,and presented a relative stable output in the survey catches since *** age of specimens selected was between 0-5 years for females and 0-7 years for males according to reading vertebrae. The growth parameters of the von Bertalanffy equation were L=2.4.68 mm,k=0.2.76 year,t= -0.02.8 year,W=2.9.93.g in male and L=2.7.13.mm,k=0.2.19 year,t=-0.3.2. year,W= 184.45 g in *** differences were found in the sex ratio in favor of male(1:1.64).The estimated TL is in 12..14 mm for female and 13..99 mm for male,*** Mean absolute fecundity(F)was 2.0}4 oocytes,ranging from 43. to *** reproductive activity extended from mid-May to end of August,with peaks in *** type of reproduction was batch *** instantaneous coefficients of total mortality(Z)and natural mortality(M)were assessed 0.99 yearand 0.43.year for male,1.2. yea and 0.40 year for *** are sought by comparing traits from that of source *** study documents the plasticity of slow growth, large adult body size,descending fecundity and delayed maturity to cope with environmental variability,and population dimension will maintain at a high level in successive years in Lake Fuxian.

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Pedosphere 2006年第2期16卷 169-176页

作者： MENG Fan-Xiang OU Wei LI Qi JIANG Yong WEN Da-Zhong Key Laboratory of Terrestrial Ecological Process Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 （China）. Graduate School of the chinese academy of Sciences Beijing 100039 （China）

A field investigation was conducted at the Shenyang Experimental Station of Ecology, chinese academy of Sciences, in an aquic brown soil of Northeast{2. under three land use types (cropland, abandoned cropland, and woodland) in order to evaluate whether the vertical distribution and seasonal fluctuation for the number of total nematodes and trophic groups could reflect soil ecosystem differences and to determine the relationships between soil chemical properties and soil nematodes. The majority of soil nematodes were present in the 0-2. cm soil layers, and for these land use types plant parasites were the most abundant trophic group. In the abandoned cropland the numbers of plant parasites reached a peak on the August sampling date, whereas the cropland and woodland peaked on the October sampling date. Meanwhile, in all land use types the number of total nematodes, bacterivores, plant parasites, and omnivores-predators was negatively (P < 0.05, except for bacterivores in cropland, which was not significant) correlated with bulk density, and positively (P < 0.05, except for fungivores in abandoned cropland, which was not significant) correlated with total organic carbon and total nitrogen.

关键词： aquic brown soil land uses soil nematode trophic groups vertical distribution

The Tethyan-Himalayan Orogenic Complex

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Continental Dynamics 1996年第1期 20-29页

作者： Cui Junwen and Xu Zhiqin(Institute of Geology chinese academy of Geological Sciences,{2.,{3.)

ＴｈｅＴｅｔｈｙａｎ－ＨｉｍａｌａｙａｎＯｒｏｇｅｎｉｃＣｏｍｐｌｅｘ￥ＣｕｉＪｕｎｗｅｎａｎｄＸｕＺｈｉｑｉｎ（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＧｅｏｌｏｇｉｃａｌＳｃｉｅｎｃｅ... 详细信息

ＴｈｅＴｅｔｈｙａｎ－ＨｉｍａｌａｙａｎＯｒｏｇｅｎｉｃＣｏｍｐｌｅｘ￥ＣｕｉＪｕｎｗｅｎａｎｄＸｕＺｈｉｑｉｎ（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＧｅｏｌｏｇｉｃａｌＳｃｉｅｎｃｅｓ，Ｂｅｉｊｉｎｇ１０００３７，Ｃ...

关键词： Himalayan

Advances in carbon flux observation and research in Asia

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Science china Earth Sciences 2005年第Z1期48卷 1-16页

作者： YU Guirui, ZHANG Leiming, SUN Xiaomin, FU Yuling & LI Zhengquan Synthesis Center of chinese Ecosystem Research Network (CERN), Institute of Geographic Sciences and Natural Resources Research, chinese {2. of Sciences, {3. 100101, china Graduate School of the chinese {2. of Sciences, beijing 10003., china Synthesis Center of chinese Ecosystem Research Network CERN Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Synthesis Center of chinese Ecosystem Research Network (CERN) Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Graduate School of the chinese academy of Sciences Beijing 100039 China

As an important component of FLUXNET, Asia is increasingly becoming the hotspot in global carbon research for its vast territory, complex climate type and vegetation diversity. The present three regional flux observation networks in Asia (i.e. AsiaFlux, KoFlux and chinaFLUX)have 54 flux observation sites altogether, covering tropic rainforest, evergreen broad-leaved forest, broad-leaved and coniferous mixed forest, shrubland, grassland, alpine meadow and cropland ecosystems with a latitudinal distribution from 2.N to 63.N. Long-term and continuous fluxes of carbon dioxide, water vapor and {2. between the biosphere and atmosphere are mainly measured with eddy covariance technique to (1) quantify and compare the carbon, water and {2. budgets across diverse ecosystems; (2. quantify the environmental and biotic controlling mechanism on ecosystem carbon, water and {2. fluxes; (3. validate the soil-vegetation-atmosphere model; and (4) serve the integrated study of terrestrial ecosystem carbon and water cycle. Over the last decades, great advancements have been made in the theory and technology of flux measurement, ecosystem flux patterns, simulation and scale conversion by Asian flux community. The establishment of chinaFLUX has greatly filled the gap of flux observation and research in Eurasia. To further promote the flux measurement and research,accelerate data sharing and improve the data quality, it is necessary to present a methodological system of flux estimation and evaluation over complex terrain and to develop the integrated research that combines the flux measurement, stable isotope measurement, remote sensing observation and GIS technique. It also requires the establishment of the Joint Committee of Asian Flux Network in the Asia-Pacific region in order to promote the cooperation and communication of ideas and data by supporting project scientists, workshops and visiting scientists.

关键词： terrestrial ecosystem, flux observation and research, carbon flux, eddy covariance, Asia.