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Agricultural sciences in China 2002年第9期1卷 949-953页

作者： ZHANG Chun-qing and JIA Ji-zeng(Institute of Crop Germplasm Resources , chinese academy of Agricultural {2. , {3. 100081 , P. R . China) Institute of Crop Germplasm Resources Chinese Academy of Agricultural Sciences Beijing 100081 P. R. China

AFLP(amplified fragment length polymorphism) is a very powerful fingerprinting technology. The key of making variety fingerprints is to select specific powerful primers for each crop. A quick and effective procedure for selecting AFLP primers for rice variety fingerprinting was established as the following: (1) Choose3.or more group materials that have close genetic relations. (2. Select potential polymorphic primers from primer pairs that are 2.+ 2.primer crosses and same at two ends. (3. Recombine the selected potential polymorphic primers and choosing more polymorphic primers. (4) Add one selecting base at one end to become 2.+ 3.or 3.+ 2.primers and further selecting more polymorphic primers. Some primers were selected with this procedure, such as M2. P87 and M73.17, with which the fingerprints had more polymorphism and high quality.

关键词： Rice AFLP fingerprint Primer selection

海马——探索认知功能细胞分子机制的重要模型

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生物化学与生物物理进展 2010年第11期37卷 1157-1158页

作者：刘力中国科学院生物物理研究所北京100101

哺乳动物脑中的海马结构被发现已经有几个世纪了,而初步确定其功能却是近几十年神经科学领域的重大发现.目前普遍认为海马是与记忆密切相关的,并把海马作为揭示学习记忆等认知过程细胞分子基础的重要模型.就近年在《生物化学与生物物理... 详细信息

哺乳动物脑中的海马结构被发现已经有几个世纪了,而初步确定其功能却是近几十年神经科学领域的重大发现.目前普遍认为海马是与记忆密切相关的,并把海马作为揭示学习记忆等认知过程细胞分子基础的重要模型.就近年在《生物化学与生物物理进展》上发表的相关文章进行了评论.

关键词：海弓学习记忆认知

PLUMBOPYROCHLORE FROM THE BAYAN OBO ORE DEPOSIT INNER MONGOLIA,CHINA

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Scientia Geologica Sinica 1997年第1期 113-118页

作者： Franz Pertlik ( Institute of Mineralogy and Crystallography, university Vienna, Austria Zhuming Yang Institute of Geology, chinese {2. of {3., beijing 10002., China

ＰＬＵＭＢＯＰＹＲＯＣＨＬＯＲＥＦＲＯＭＴＨＥＢＡＹＡＮＯＢＯＯＲＤＥＰＯＳＩＴＩＮＮＥＲＭＯＮＧＯＬＩＡ，ＣＨＩＮＡTXＰＬＵＭＢＯＰＹＲＯＣＨＬＯＲＥＦＲＯＭＴＨＥＢＡＹＡＮＯＢＯＯＲＥＤＥＰＯＳＩＴＩＮＮＥＲＭＯ... 详细信息

ＰＬＵＭＢＯＰＹＲＯＣＨＬＯＲＥＦＲＯＭＴＨＥＢＡＹＡＮＯＢＯＯＲＤＥＰＯＳＩＴＩＮＮＥＲＭＯＮＧＯＬＩＡ，ＣＨＩＮＡTXＰＬＵＭＢＯＰＹＲＯＣＨＬＯＲＥＦＲＯＭＴＨＥＢＡＹＡＮＯＢＯＯＲＥＤＥＰＯＳＩＴＩＮＮＥＲＭＯＮＧＯＬＩＡ，ＣＨＩＮＡＦｒａｎｚ...

关键词： PLUMBOPYROCHLORE THE OBO FROM INNER MONGOLIA,CHINA BAYAN DEPOSIT

Dependence of the IMF sector structure on the solar dipole tilt angle

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Dependence of the IMF sector structure on the solar dipole t...

Problems for water resources development in typical small karst drainage basins and countermeasures

中国科学院地质与地球物理研究所2.08学术年会

作者： A.M.Du,W.Y.Xu,and X.S.Feng 1 Institute of Geology and Geophysics,chinese academy of {2., {3.,China. 2.State Key Laboratory for Space Weather,chinese academy of {2.,{3.,China.

[1]The quasiperiodic variations of the interplanetary magnetic field(IMF) sector structure at the ACE satellite(L1) are investigated using power spectrum *** appears that the two-sector structure of the IMF dominates during the solar maximum, lasting 3.years from 2.00 through 2.03.and the four-sector structure dominates during the solar activity minimum.A possible explanation is introduced for this phenomenon in which the IMF sector structures vary with the tilt angle of the heliospheric current sheet (HCS) with respect to the solar rotation *** the solar activity maximum,the HCS is perpendicular to the ecliptic *** the spacecrafts at L1 point are expected to pass through the HCS only twice in one solar rotation,which gives rise to the observed two-sector structure of the *** the other hand,during the solar activity minimum,the HCS is nearly parallel to the ecliptic plane,and the polarity of IMF Bx changes several times in one solar rotation due to the wavy nature of the HCS, which may lead to the observed four-sector structure.

关键词：

来源： cnki会议评论

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Journal of Geographical sciences 2000年第2期10卷 168-176页

作者： WAN Hong-tao, XIE Chuan-jie, SHI Yun-liang (LREIS, Institute of Geographical sciences and Natural Resources, chinese {2. of sciences, beijing 100101, China, Department of Urban and Resource, Nanjing university Nanjing 2.0093. China) 中科院地理与资源所资源与环境信息系统国家重点实验室北京南京大学江苏南京

In karst area water deficit is one of the main factors constraining sustainable economic development. In 1979 the comprehensive karstic observational field station was set up in Houzhai drainage basin located,\ in Puding county of Guizhou Province, which can represent most of the small karst drainage basins on the dividing line of the Guizhou Plateau. Geomorphology, water resources and water chemistry were investigated and observed. Based on comparisons of water supply with water demand and analysis of the main problems in water exploitation and utilization. it is found out that the water deficiency was not directly caused by the scarcity of natural water resources. The true reason is the insufficient capacity of water supply caused by the dismatch of the water and soil water resources which can be dealt with by building more irrigation works. Some solutions such as to build scientific basis for water exploitation and utilization and sustainable economic development in karst drainage basins on dividing line of the Guizhou Plateau.

关键词： small karst drainage basin water resources comparison of water supply and demand sustainable exploitation and utilization

Si纳米量子点的LPCVD自组织化形成及其生长机理研究

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物理学报 2003年第12期52卷 3108-3113页

作者：彭英才池田弥央宫崎诚一河北大学电子信息工程学院保定071002 中国科学院半导体研究所半导体材料科学重点实验室北京100083 广岛大学电气工学系日本广岛

采用低压化学汽相沉积 (LPCVD)方法 ,依靠纯SiH4 气体分子的表面热分解反应 ,在由Si—O—Si键和由Si—OH键终端的两种SiO2.表面上 ,自组织生长了Si纳米量子点 .实验研究了所形成的Si纳米量子点密度随SiO2.表面的反应活性位置数、沉积温... 详细信息

采用低压化学汽相沉积 (LPCVD)方法 ,依靠纯SiH4 气体分子的表面热分解反应 ,在由Si—O—Si键和由Si—OH键终端的两种SiO2.表面上 ,自组织生长了Si纳米量子点 .实验研究了所形成的Si纳米量子点密度随SiO2.表面的反应活性位置数、沉积温度以及反应气压的变化关系 .依据LPCVD的表面热力学过程 ,定性地分析了Si纳米量子点的形成机理 .研究结果对具有密度分布均匀和晶粒尺寸可控的Si纳米量子点的自组织生长 ,以及Si基新型量子电子器件的制备具有重要的实际意义 .

关键词：硅纳米量子点低压化学汽相沉积法 LPCVD 薄膜生长量子器件自组织生长

Synchronized oscillation in a modular neural network composed of columns

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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 academy of {2., {3. 100101, China Institute of Computing Technology, chinese academy of {2., {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.

Inhibition of the Specific ~3.-DL-Glu Binding in the Hippocampus of Rat Brain by Lead

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Biomedical and Environmental sciences 1998年第1期11卷 81-86页

作者： ZHANG HENG-SHAN ZHAO XI-LONG SONG LI-HUA AND QIN YU-HUI(Deportment of Taxicology, Institute of Environmental HealthMinitoring, chinese academy of PreventiveMedicine, {2. 10002., China) Department of Toxicology Chinese Academy of Preventive Medicine Beijing China

The effect of Pb2. on 3.-DL-Glutamate (3.-DL-Glu) binding in the membrane preparations from the hippocampus of rat brain was investigated with a view to explaining the cognitive and learning deficits produced by the heavy metal. The results indicated that Pb2. (3. 1-2.. 0 μmol.L -1 ) inhibited 3.H-DL-Glu binding in a concentration-dependent manner . Scatchard analysis further revealed that at a concentration of 6. 3.μmol.L-1 Pb2.+ interfered with binding mainly through significantly decreasing the density of binding sites. This finding provided an important insight into Pb2. -induced impairments in learning and memory previously documented in children and in experimental animals chronically exposed to Pb^(2.)

关键词： DL-Glu Binding in the Hippocampus of Rat Brain by Lead Pb Inhibition of the Specific

Isomerization kineties of spirocompounds incorporated into sodium dialkylmethyl sulfate bilayer membranes

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chinese Journal of Chemistry 1993年第2期11卷 178-182页

作者： WANG,Guan-Wu LEI,Xue-Gong LI,Zi-Zhong LIU,You-Cheng National Laboratory of Applied Organic Chemistry and Department of Chemistry,Lanzhou university,Lanzhou 73.000FAN,Mei-Gong Institute of Photographic Chemistry,chinese {2. of {3.,beijing 100101 National Laboratory of Applied Organic Chemistry and Department of Chemistry Lanzhou University Lanzhou 730000 Institute of Photographic Chemistry Chinese Academy of Sciences Beijing 100101

The isomerization kinetics of a spiropyran(1)and a spirooxazine(2.embedded in bilayer membranes of sodium 1-pentadecylhexadecyl sulfate(3.and sodium 1-undecyl dodecyl sulfate(4),respeatively,were *** thermal decay of 2.obeyed first-order kinetics, whereas that of 1 consisted of two simultaneous first-order *** parameters were obtained from Arrhenius plots.

关键词： Isomerization kineties of spirocompounds incorporated into sodium dialkylmethyl sulfate bilayer membranes