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流域演化与泥石流的系统性——以云南东川蒋家沟为例

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山地学报 2009年第4期27卷 449-456页

作者：李泳胡凯衡苏凤环苏鹏程中国科学院山地灾害与地表过程重点实验室中国科学院水利部成都山地灾害与环境研究所

以典型的云南东川蒋家沟为例,根据Strahler面积-高程曲线的积分将其分区,揭示了流域的演化差异,证明了泥石流发生在特定的演化区域,并具有特定的物质组成。通过概率模型,定性说明了泥石流在流域的形成和扩张,其结果就表现为间歇性的阵... 详细信息

以典型的云南东川蒋家沟为例,根据Strahler面积-高程曲线的积分将其分区,揭示了流域的演化差异,证明了泥石流发生在特定的演化区域,并具有特定的物质组成。通过概率模型,定性说明了泥石流在流域的形成和扩张,其结果就表现为间歇性的阵流。阵流的时空特征反过来证明了泥石流的系统性。统计还表明,阵流的流量分布和衰减取决于最大流量;最大流量序列很好继承了作为流域系统行为的动力学特征。最后,可以根据单沟泥石流的过程系统考察区域泥石流活动。泥石流在大尺度水系的分布,从概率过程看,完全等同于泥石流源地小分支在单个流域的分布,而且满足相似的分布特征。

关键词：流域演化流域分区泥石流概率分布蒋家沟

Mantle transition zone topography and structure beneath the central Tien Shan orogenic belt

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Mantle transition zone topography and structure beneath the ...

Immunodominance and clonal selection inspired multiobjective clustering

中国科学院地质与地球物理研究所第十届(2010年度)学术年会

作者： Xiaobo Tian,Dapeng Zhao,Hongshuang Zhang,You Tian,and Zhongjie Zhang 1 State key laboratory of Lithospheric evolution,Institute of Geology and Geophysics,chinese academy of sciences,Beijing,china. 2 Department of Geophysics,Tohoku University,Sendai,Japan. 3 College of Geoexploration Science and Technology,Jilin University, Changchun,china.

[1]In this study we calculated receiver functions(RFs) from teleseismic P waveforms recorded by stations of four seismic networks to determine the topography of the mantle transition zone(MTZ) beneath the central Tien *** converted the RFs from the time domain to the depth domain and selected the depths of 410 and 660 km discontinuities after stacking the RFs in narrow raypath *** better determine the MTZ topography, we applied an updated RF method to invert the depth differences between the 410 and 660 km discontinuities in each RF for lateral depth variations of the two discontinuities. Using this approach,we detected several anomalies in the 410 and 660 km discontinuity depths beneath the central Tien Shan *** synthetic tests were carried out to confirm the main features of the *** the south and east of Lake Issyk-Kul,the 410 km discontinuity becomes shallower while the 660 km discontinuity becomes deeper, leading to a thicker MTZ with a lower temperature,possibly caused by pieces of thickened lithosphere dropping down to at least the bottom of the *** the northwest of Lake Issyk-Kul,the 410 km discontinuity becomes deeper while the 660 km discontinuity becomes shallower,resulting in a thinner MTZ with a higher temperature,which may reflect a small-scale hot upwelling from the lower mantle.

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Progress in Natural Science:Materials International 2009年第6期19卷 751-758页

作者： Wenping Ma , Licheng Jiao, Maoguo Gong key laboratory of Intelligent Perception and Image Understanding of the Ministry of Education of china, Institute of Intelligent Information Processing, Xidian University, Xi’an 710071, china key laboratory of Intelligent Perception and Image Understanding of the Ministry of Education of china Institute of Intelligent Information Processing Xidian University Xi’an 710071 China

The biological immune system is a highly parallel and distributed adaptive system. The information processing abilities of the immune system provide important insights into the field of computation. Based on immunodominance in the biological immune system and the clonal selection mechanism, a novel data mining method, Immune Dominance Clonal Multiobjective Clustering algorithm (IDCMC), is presented. The algorithm divides an individual population into three sub-populations according to three different measurements, and adopts different evolution and selection strategies for each sub-population. The update of each sub-population, however, is not carried out in isolation. The periodic combination operation of the analysis of the three sub-populations represents considerable advantages in its global search ability. The clustering task is a multiobjective optimization problem, which is more robust with respect to the variety of cluster structures of different datasets than a single-objective clustering algorithm. In addition, the new algorithm can determine the number of clusters automatically, which should identify the most promising clustering solutions in the candidate set. The experimental results, using artificial datasets with different manifold structure and handwritten digit datasets, show that the IDCMC outperforms the PESA-Ⅱ-based clustering method, the genetic algorithm-based clustering technique and the original K-Means algorithm in solving most of the problems tested.

关键词： Artificial immune systems Multiobjective optimization Clustering Unsupervised learning

Study on flow behavior and structure over chined fuselage at high angle of attack

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Science china(Technological sciences) 2010年第8期53卷 2057-2067页

作者： TIAN Wei,DENG XueYing ,WANG YanKui,FAN GuoLei&DONG Chao Ministry of Education key laboratory of Fluid Mechanics,Beijing University of Aeronautics and Astronautics,Beijing 100191,china Ministry of Education key laboratory of Fluid Mechanics Beijing University of Aeronautics and Astronautics Beijing China

A study of leeward vortex structure over chined fuselage and the effects of micro tip perturbation on its vortex flow have been carried out in wind tunnel experiments at Reynolds numbers from 1.26×105 to 5.04×105 with PIV and pressure measurement ***,the experiment results have proved that micro tip perturbation has no effects on the vortex flow and its aerodynamic characteristics over chined fuselage at high angle of attack,in which there are not any non-deterministic flow ***,the evolution of leeward vortex structure over chined fuselage along the axis of model can be divided into four flow regimes:linear conical developed regime,decay regime of leeward vortex intensity,asymmetric leeward vortex break down regime and completely break down *** a correlation between leeward vortex structure and sectional aerodynamic force was also revealed in the present ***,the experiment results show the behavior of leeward vortex core trajectories and zonal characteristics of leeward vortex structure with angles of ***,the experiment results of Reynolds number effect on the leeward vortex flow have further confirmed research conclusions from previous studies:the flows over chined fuselage at high angles of attack are insensitive to variation of Reynolds number,and there is a little effect on the secondary boundary layer separation and the suction peak induced by leeward vortex.

关键词： high angle of attack aerodynamics chined fuselage tip perturbation leeward vortex structure zonal characteristics

SEED COAT DEVELOPMENT AND ITS evolutionARY IMPLICATIONS IN DIPLOID AND AMPHIDIPLOID BRASSICA SPECIES

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SEED COAT DEVELOPMENT AND ITS EVOLUTIONARY IMPLICATIONS IN D...

Advancement of Studies on Vitellogenin of Crustaceans

湖北省遗传学会、江西省遗传学会2006年学术年会暨学术讨论会

作者： CHANG-LI ZENG XIAO-MING WU JIAN-BO WANG key laboratory of MOE for Plant Developmental Biology, College of Life sciences, Wuhan University, Wuhan, 430072, china 2 College of Medicine and Life sciences, Jianghan University, Wuhan, 430056, china 3 Institute of Oil Crop Research, chinese academy of Agricultural sciences, Wuhan, 430062, china

The variations in seed coat patterns are successfully employed in the establishment of evolutionary relationships. This research aimed to provide the evolutionary implications in the anatomy of developing seed coat in amphidiploid Brassica species. Thick sections (1-2μm) and microscope technology were used to study the development of seed coat structure in six species (15 accessions), three amphidiploids and their three diploid parents. Four types of epidermis layer, six types of subepidermis and nine types of palisade layer could be recognized during the whole developmental process of the seed coat The types of epidermis and subepidermis layer in diploids and amphidiploids changed similarly during the development of seed. Although there was little difference in the types of palisade layer among the accessions of diploids and amphidiploids at the early stages, many particular types appeared in these species at middle and later developmental stages. The development of palisade layer in amphidiploids varied complicatedly. Some accessions showed intermediate types in the palisade layer between the two putative parents, while others resembled only one of the two diploid ancestors. The developmental types of epidermis and subepidermis did not show the relationships between amphidiploids and diploids. However, the development in the types of the palisade layer could be acted as an excellent character that implied the seed coat evolution of amphidiploids.

关键词： Brassica, diploids and amphidiploids, seed coat anatomy, development, evolutionary implication.

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Animal Husbandry and Feed Science 2012年第2期4卷 86-90,92页

作者： SHUI Yan 1 ,ZHOU Xin 1,2 1. key laboratory of Freshwater Fisheries and Germplasm Resources Utilization,Ministry of Agriculture,Freshwater Fisheries Research Center, chinese academy of Fishery sciences,Wuxi 214081,china 2. Wuxi Fishery College,Nanjing Agricultural University,Wuxi 214081,china

[Objective]The paper briefly summarizes the gene cloning and molecular research progress of vitellogenin in crustaceans belonging to Decapod. [Method]The molecular characteristics of identified Vg proteins in crustacean are reviewed from the aspects of protein synthesis,molec- ular structure,phylogenetic evolution,hormonal regulation of gene expression and biological functions. [Result]The similarity of structure and func- tion in homologous protein are pointed out; phylogenetic relationships among molecules are analyzed; the main characteristics of Vg interspecific protein in Decapod are summarized,and the special parts different from other species are raised. [Conclusion]The study can offer some help for the further study of Vg gene,and provides theoretical basis for ovary development mechanism of crabs.

关键词： Decapod Vitellogenin Gene

特异亲和活性蓝染料的小分子RNA的SELEX筛选

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生物化学与生物物理学报 1999年第5期31卷 504-508页

作者：王琛徐丰金由辛王德宝中国科学院上海生物化学研究所分子生物学国家重点实验室!上海200031

化学合成含有２０个核苷酸随机序列，长度为７３个核苷酸的单链ＤＮＡ随机库；ＰＣＲ扩增和双链化后，Ｔ７ＲＮＡ聚合酶体外转录得到单链ＲＮＡ随机库。以活性蓝染料凝胶柱为筛选介质，体外进化方法筛选特异亲和... 详细信息

化学合成含有２０个核苷酸随机序列，长度为７３个核苷酸的单链ＤＮＡ随机库；ＰＣＲ扩增和双链化后，Ｔ７ＲＮＡ聚合酶体外转录得到单链ＲＮＡ随机库。以活性蓝染料凝胶柱为筛选介质，体外进化方法筛选特异亲和活性蓝染料的ＲＮＡ分子。经８轮循环筛选，ＲＮＡ群体亲和染料的比例从小于０．０３％上升至２２．４％。克隆筛选出ＲＮＡ序列后，测定了３０个克隆的序列，得到三类ＲＮＡ分子。经二级结构分析和活性蓝染料特异亲和能力测试，发现ＲＮＡ特异亲和活性蓝染料的主要结构因素是ＲＮＡ形成的双链结构

关键词：体外进化方法活性蓝染料生物大分子进化小分子RNA

Fault System,Deformation Style and Development Mechanism of the Bachu Uplift,Tarim Basin

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Journal of Earth Science 2012年第4期23卷 529-541页

作者：佟殿君张俊霞阳怀忠胡德胜任建业 key laboratory of Tectonics and Petroleum Resources of Ministry of Education China University of Geosciences School of Economics and Management China University of Geosciences Beijing Research Institute CNOOC Zhanjiang Branch CNOOC Structral Research Center of Oil&Gas Bearing Basin Ministry of EducationChina University of Geosciences

The Bachu （巴楚） uplift is one of the most active tectonic regions nowadays in the Tarim basin, which is also a faulted block uplift that was intensively active during the Cenozoic. This study was based primarily on the geological structure interpretation of seismic profiles, applying the theories and methods of basin dynamics, structural analysis and tectono-stratigraphic analysis, the geometry and kinematics features of the fault systems in the Bachn uplift were analyzed in detail. Our study shows that each fault belt is mainly characterized by compression and overthrusting, most of the faults initiated and activated during the Mid-Late Himalayan period, and that the general structural styles of the Bachu uplift were basement-involved pop-up thrust faulted block uplift, of which the southern margin was covered by the large-scale decollement fault system. The basement-involved structures widely developed in the higher position of the basement uplift, while decollement fault system developed mainly at the position with gypsum mudstone. The evolution process of Bachu uplift included back-bulge slope of the peripheral foreland basin in Mid-Late Caledonian, forebulge in HercynianYanshanian and the latest compressional faulted block uplift in Mid-Late Himalayan. Meanwhile,the study also suggests that the formation, reconstruction and stabilization of the uplift were controlled by the development and evolution of fault systems clearly. In the early forebulge stage, it was mainly presented as flexural deformation without the developing of thrust faults in the Bachu area; to the late stage, under the influence of violent lateral compression deformation, the faulted block uplift formed finally.

关键词： fault system structural style structural evolution Bachu uplift Tarim basin.

Cell evolutionary Algorithm: a New Optimization Method on Ground-State Energy of the Atomic

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Wuhan University Journal of Natural sciences 2000年第4期5卷 425-430页

作者： Liu Lian-jun, Xu Jing-wen, Mao You-dong, Li Yuan-xiang Department of Physics, Wuhan University, Wuhan 430072,china State key laboratory of Software Engineering,Wuhan University, Wuhan 430072, china Department of Physics Wuhan University Wuhan China State key laboratory of Software Engineering Wuhan University Wuhan China

The purpose of this paper is to present a new general approach to solve ground-state energies of the double-electron systems in a uniform magnetic field, in which the basic element of evolution is the set in the solution space, rather than the point. The paper defines the Cell evolutionary Algorithm, which implements such a view of the evolution mechanism. First, the optimal set in which the optimal solution may be obtained. Then this approach applies the embedded search method to get the optimal solution. We tested this approach on the atomic structure, and the results show that it can improve not only the efficiency but also the accuracy of the calculations as it relates to this specific problem.

关键词： key words double electron systems ground state energy variational principle cell evolutionary algorithm evolutionary algorithm