检索结果-南通市图书馆

agricultural Sciences in china 2002年第12期1卷 1303-1309页

作者： LONG Wen-hong , XU Ming-hui and ZHANG Shu-hua(College of Landscape and Horticulture, yunnan agricultural university, kunming 650201 , P. R. china Institute of Biotechnology , yunnan Academy of agricultural Sciences , kunming 650223 , P. R. china Rice Research Institute, yunnan agricultural university , kunming 650201 , P. R. china) College of Landscape and Horticulture Yunnan Agricultural University Kunming 650201 P. R. China

The relationship between the indica-japonica differentiation of parents and heterosis of hybrid in rice was studied with 10 sterile lines, 10 maintainer lines of the sterile lines, 38 restorer lines of Dian type hybrid rice and 40 hybrids derived from the sterile lines and restorer lines. The results indicated that there was a parabolic correlation between the indica-japonica differentiation of parents detected by RAPD markers and heterosis of hybrid rice. When certain indica-japonica differentiation of parents exists, the percentage of combinations with positve heterosis and the mean heterosis of hybrids were high. But that didn't mean too much difference of parents could lead to stronger hetesosis, that meant overdiffernt parents seldom bring positve het-erotic hybrids. Suitable difference of percent of indica alleles of parents of stronger heterotic hybrid was 12 -16%.

关键词： Dian type hybrid rice Indica-japonica differentiation Heterosis RAPD

3D visualization model and key techniques for digital mine

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中国有色金属学会会刊：英文版 2011年第S3期21卷 748-752页

作者： JIN Bao-xuan1,FANG Yuan-min2,SONG Wei-wei2 1. yunnan Provincial Geomatics Centre, kunming 650034, china 2. Faculty of Land Resource Engineering, kunming university of Science and Technology, kunming 650093, china [a] yunnan Provincial Geomatics Centre Kunming 650034 China [b] Faculty of Land Resource Engineering Kunming University of Science and Technology Kunming 650093 China

Digital mine is the inevitable outcome of the information processing, and is also a complicated system engineering. Firstly, for the 3D visualization application of the digital mine, the ground and underground integrative visualization framework model was proposed based on the mine entity database. So, the visualization problem was availably resolved, as well as the professional analytical ability was improved. Secondly, aiming at the irregularities, non-uniformity, dynamics of mine entities, mix modeling method based on the entity character was put forward, in which 3D expression of mine entities was realized. Lastly, the 3D visualization project for a copper mine was experimentally studied. Satisfactory results were acquired, and the rationality of visualization model and feasibility of 3D modeling were validated.

关键词： digital mine three dimension visualization framework model spatial data modeling

Suspended sediment flux of river:Wavelet analysis in the Panlong basin of the Upper Red River (Honghe River),china

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Chinese Science Bulletin 2007年第A02期52卷 172-179页

作者： DING WenRong~(1,2+) ZHOU Yue~(1,3) L XiXi~4 1 The Faculty of Environment Science and Engineering,kunming university of Science and Technology,kunming 650093,china 2 College of Tourism and Geography Science,yunnan Normal university,kunming 650092,china 3 yunnan university of Finance and Economics,kunming 650221,china 4 Department of Geography,National university of Singapore 119260,Singapore Univ Sci and Technol Kumasi Fac Environm Sci and Engn Kunming 650093 Peoples R China.

这份报纸把小浪分析用于检验变化趋势，多时间规模变化，在上面的红河的 Panlong 盆的推迟的沉积流动(SSF ) 的周期、突然的变化特征，中国。结果显示 SSF 从 1951 ～ 1997 增加了，但是自从 1998，衰退了。SSF 的变化把多时间规模特征... 详细信息

这份报纸把小浪分析用于检验变化趋势，多时间规模变化，在上面的红河的 Panlong 盆的推迟的沉积流动(SSF ) 的周期、突然的变化特征，中国。结果显示 SSF 从 1951 ～ 1997 增加了，但是自从 1998，衰退了。SSF 的变化把多时间规模特征和变化在不同时间时期改变了。三周期的时间规模， 4， 7 和 22 年，被决定。22 年的周期的时间规模，是在三次规模之中的最明显的，通过整个研究时期延长了，而第 4-a 7 年的时间规模在某些时间时期仅仅是明显的。分别地有 27 次越过 4 年的时间规模，越过 7 年的时间规模的 16 次和越过 22 年的时间规模的 5 次的突然的变化。根据统计的聚会和气候数据分析，我们断定人的活动是导致了多时间规模的 SSF，而是特征的变化趋势的主要原因，周期、突然的变化被气候变化主要影响。

关键词：河流中国红河微波分析

酵母基因内含子中二聚体寡核苷酸转录调控位点的统计分析

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生物化学与生物物理进展 2004年第5期31卷 449-454页

作者：胡俊张静云南大学应用统计中心

对高效和低效转录酵母基因内含子序列中寡核苷酸的出现频率进行对照分析 ,结果显示高效和低效内含子序列的结构有差异 ,而且高效转录内含子序列含有较多潜在的转录因子结合位点 .观察实验获得的转录调控位点 ,发现许多调控位点不是相邻... 详细信息

对高效和低效转录酵母基因内含子序列中寡核苷酸的出现频率进行对照分析 ,结果显示高效和低效内含子序列的结构有差异 ,而且高效转录内含子序列含有较多潜在的转录因子结合位点 .观察实验获得的转录调控位点 ,发现许多调控位点不是相邻接的寡核苷酸 ,而是由一对保守寡核苷酸构成 ,这对寡核苷酸被一段长度固定的非保守区域间隔开 .于是对此形式的二聚体寡核苷酸 (dyad)在高效和低效内含子序列中出现的频率进行统计比较分析 ,抽提出在高效内含子组出现的频率显著高于在低效内含子组出现频率的二聚体寡核苷酸 ,分析这些二聚体寡核苷酸在两组内含子序列中的分布特征 ,并对照实验结果。

关键词：酵母内含子二聚体寡核苷酸频率分析转录调控位点

Asymmetric interaction will facilitate the evolution of cooperation

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Science china(Life Sciences) 2010年第8期53卷 1041-1046页

作者： WANG RuiWu1, HE JunZhou1,2, WANG YaQiang1,2, SHI Lei1,3 & LI YaoTang1,2 1 State Key Laboratory of Genetic Resources and Evolution, kunming Institute of Zoology, Chinese Academy of Science, kunming 650223, china 2 School of Mathematics and Statistics, yunnan university, kunming 650091, china 3 Statistics and Mathematics College, yunnan university of Finance and Economics, kunming 650221, china 1. State Key Laboratory of Genetic Resources and Evolution Kunming Institute of Zoology Chinese Academy of Science Kunming 650223 China2. School of Mathematics and Statistics Yunnan University Kunming 650091 China3. Statistics and Mathematics College Yunnan University of Finance and Economics Kunming 650221 China

Explaining the evolution of cooperation remains one of the greatest problems for both biology and social science. The classical theories of cooperation suggest that cooperation equilibrium or evolutionary stable strategy between partners can be maintained through genetic similarity or reciprocity relatedness. These classical theories are based on an assumption that partners interact symmetrically with equal payoffs in a game of cooperation interaction. However, the payoff between partners is usually not equal and therefore they often interact asymmetrically in real cooperative systems. With the Hawk–Dove model, we find that the probability of cooperation between cooperative partners will depend closely on the payoff ratio. The higher the payoff ratio between recipients and cooperative actors, the greater will be the probability of cooperation interaction between involved partners. The greatest probability of conflict between cooperative partners will occur when the payoff between partners is equal. The results show that this asymmetric relationship is one of the key dynamics of the evolution of cooperation, and that pure cooperation strategy (i.e., Nash equilibrium) does not exist in asymmetrical cooperation systems, which well explains the direct conflict observed in almost all of the well documented cooperation systems. The model developed here shows that the cost-to-benefit ratio of cooperation is also negatively correlated with the probability of cooperation interaction. A smaller cost-to-benefit ratio of cooperation might be created by the limited dispersal ability or exit cost of the partners involved, and it will make the punishment of the non-cooperative individuals by the recipient more credible, and therefore make it more possible to maintain stable cooperation interaction.

关键词： Hawk–Dove game evolutionarily stable strategy asymmetric cooperation mixed strategy Nash equilibrium

Full T-cell activation and function in teleosts require collaboration of first and co-stimulatory signals

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Zoological Research 2024年第1期45卷 13-24页

作者： Wei Liang Kang Li Haiyou Gao kunming Li Jiansong Zhang Qian Zhang Xinying Jiao Jialong Yang Xiumei Wei State Key Laboratory of Estuarine and Coastal Research School of Life SciencesEast China Normal UniversityShanghai 200241China Laboratory for Marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and TechnologyQingdaoShandong 266237China

Mammalian T-cell responses require synergism between the first signal and co-stimulatory ***,whether and how dual signaling regulates the T-cell response in early vertebrates remains *** the present study,we discovered that the Nile tilapia(Oreochromis niloticus)encodes key components of the LAT signalosome,namely,LAT,ITK,GRB2,VAV1,SLP-76,GADS,and PLC-γ*** components are evolutionarily conserved,and CD3εmAb-induced T-cell activation markedly increased their ***,at least ITK,GRB2,and VAV1 were found to interact with LAT for signalosome *** of the first signal,the NF-κB,MAPK/ERK,and PI3K-AKT pathways were activated upon CD3εmAb ***,treatment of lymphocytes with CD28 mAbs triggered the AKT-mTORC1 pathway downstream of the co-stimulatory *** CD3εand CD28 mAb stimulation enhanced ERK1/2 and S6 phosphorylation and elevated NFAT1,c-Fos,IL-2,CD122,and CD44 expression,thereby signifying T-cell ***,rather than relying on the first or co-stimulatory signal alone,both signals were required for T-cell *** T-cell activation was accompanied by marked apoptosis and cytotoxic *** findings suggest that tilapia relies on dual signaling to maintain an optimal T-cell response,providing a novel perspective for understanding the evolution of the adaptive immune system.

关键词： Oreochromis niloticus CD3 CD28 T cells Adaptive immunity Evolution

Congruences on ideal nil-extension of completely regular semigroups

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Chinese Science Bulletin 1998年第5期43卷 379-381页

作者： REN Xueming 1, 2 GUO Yuqi 2 and CEN Jiaping (Shum Kar-ping) 31. Department of Mathematics, Xi’an university of Architecture & Technology, Xi’an 710055, china 2. Department of Mathematics, yunnan university, kunming 650091, china 3. Department of Department of Mathematics Xi’an University of Architecture & Technology Xi’an China Department of Mathematics Yunnan University Kunming China Department of Mathematics Chinese University of Hong Kong Hong Kong

Let S be an ideal nil-extension of a completely regular semigroup K by a nil semigroup Q with zero. A concept of admissible congruence pairs (δ,ω) of S is introduced, where δ and ω are a congruence on Q and a congruence on K respectively. It is proved that every congruence on S can be uniquely respresented by an admissible congruence pair (δ,ω) of S. Suppose that ρ K denotes the Rees congruence induced by the ideal K of S. Then it is shown that for any congruence σ on S,a mapping Γ:σ|→(σ Q,σ K) is an order-preserving bijection from the set of all congruences on S onto the set of all admissible congruence pairs of S,where σ K is the restriction of σ to K and σ Q=(σ∨ρ K)/ρ K. Moreover,the lattice of congruences of S is also discussed. As a special case,every congruence on completely Archimedean semigroups S is described by an admissible quarterple of S. The following question is asked: Is the lattice of congruences of the completely Archimedean semigroup a semimodular lattice?

关键词： completely regular semigroups ideal nil-extension congruences.

Analysis of the Resistance Gene Analogue for Rice Cultivars in yunnan Province

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agricultural Sciences in china 2002年第5期1卷 549-554页

作者： SUN Yan, WANG Yun-yue, HE Yue-qiu, FAN Jing-hua, CHEN Jian-bin and ZHU You-yong( Key Laboratory for Plant Pathology of yunnan Province ,yunnan agricultural university, kunming 650201 ,P.R. china College of Agronomy and Biotechnology , yunnan agricultural university , kunming 650201 , P. R . china ) Key Laboratory for Plant Pathology of yunnan Province Yunnan Agricultural University Kunming 650201 P. R. China College of Agronomy and Biotechnology Yunnan Agricultural University Kunming 650201 P. R. China Key Laboratory for Plant Pathology of yunnan Province Yunnan Agricultural University Kunming 650201 P. R. China

Genetic diversity of commercial and local rice cultivars in yunnan Province was studied using the resistance gene analogue (RGA) based on resistance gene conserved sequences. The RGA analysis of 137 cultivars was conducted by PCR amplification using three primers, i.e. S1/AS3, XLRR for/XLRR rev, and Pto-kinl/Pto-kin2, respectively. The results showed that both Indica and Japonica cultivars were genetically highly diverse. All cultivars were divided into 3 lineages according to the DNA band data at 96% dissimilarity, and into 20 lineages at 60% dissimilarity. The lineages were related to their genetic background and blast disease resistance with only a few exceptions. The RGA data can be useful in rice production by mixed-planting of different cultivars in the field and breeding of resistance cultivars by selecting different parental cultivars with great genetic diversity.

关键词： Rice Resistance gene analogue Blast disease resistance

Regularity of the Attractor for the Dissipative Hamiltonian Amplitude Equation Governing Modulated Wave Instabilities

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Acta Mathematicae Applicatae Sinica 2002年第2期18卷 263-272页

作者： Zheng-de DaiDepartment of Mathematics, yunnan university, kunming 650091, china Department of Mathematics Yunnan Normal University Kunming China

In the present paper, the existence of global attractor for dissipative Hamiltonian amplitude equation governing the modulated wave instabilities in E0 is considered. By a decomposition of solution operator, it is sho... 详细信息

关键词： Regularity of Global attractor Hamiltonian amplitude equation

Microstructure Evolution in Laser RS Co-base Metastable Alloy

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Chinese Journal of Lasers 1995年第5期B4卷 475-480页

作者： WANG Anan CHENG Shunqi GUO Zhiyao (kunming university of Science and Technology,kunming 650093,china)YUN Bo (Micoanalysis Center,yunnan university,kunming 650091,china) yunnan Univ Kunming China

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关键词： laser rapid solidification eutectic carbide defects