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Semantic Search among Heterogeneous Biological Databases Based on Gene Ontology

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Acta Biochimica et Biophysica Sinica 2004年第5期36卷 365-370页

作者： Shun-Liang CAO, Lei QIN1, Wei-Zhong HE1, Yang ZHONG2, Yang-Yong ZHU, and Yi-Xue LI1,3. Department of Computing and Information technology, Fudan university, shanghai 20043.,{3. shanghai Center for Bioinformation 1 technology, shanghai 20023.,{3. school of life sciences, Fudan university, shanghai 20043.,{3. Bioinformation Center of shanghai Institutes for Biological sciences, the Chinese Academy of sciences, shanghai 20003.,{3. Department of Computing and Information technology Fudan University Shanghai China

Semantic search is a key issue in integration of heterogeneous biological databases. In this paper, we present a methodology for implementing semantic search in BioDW, an integrated biological data warehouse. Two tables are presented: the DB2GO table to correlate Gene Ontology (GO) annotated entries from BioDW data sources with GO, and the semantic similarity table to record similarity scores derived from any pair of GO terms. Based on the two tables, multifarious ways for semantic search are provided and the corresponding entries in heterogeneous biological databases in semantic terms can be expediently searched.

关键词： Gene Ontology semantic search BioDW

Producing Calcium-Bearing Mullite Thermal-Insulating Refractories by Kyanite

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International Journal of Minerals,Metallurgy and Materials 1999年第1期13卷 50-53页

作者： Wen Ni (Resources Engineering school, university of science and {3. Beijing, Beijing 100083. china) Resources Engineering school University of Science and Technology Beijing Beijing 100083 China

To improve the physical properties, a series of experiments have been camed out to produce calcium-bearing mullite thermal-insulating refractories by using kyanite as major raw materials. The experiments were carried out by a foaming technique and using white cement as a combing agent. The results show that the calcium-bearing mullite refractory has much better physical properhes than traditional clay refractory and high-alumina refractory.

关键词： mullite thermal-insulating refractory kyanite

Dielectric tunable properties of BaTi_4O_9-doped Ba_(0.6)Sr_(0.4)TiO_3.microwave composite ceramics

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science china(Technological sciences) 2009年第1期52卷 116-122页

作者： ZHANG JingJi, ZHAI JiWei, JIANG HaiTao & YAO Xi Functional Materials Research Laboratory, tongji university, shanghai 200092, china Functional Materials Research Laboratory Tongji University Shanghai 200092 China

BaTi4O9-doped Ba0.6Sr0.4TiO3.(BST) composite ceramics were prepared by the conventional solid-state reaction and their structure, dielectric nonlinear characteristics and microwave dielectric properties were investigated. The secondary phase of the orthorhombic structure Ba4Ti13.3. is formed among BST composite ceramics with the increase of BaTi4O9. At the same time, a duplex or bimodal grains size distribution shows fine grains in a coarse grain matrix. The degree of frequency dispersion of dielectric permittivity below Tm is increased initially and then decreased with respect to BaTi4O9. As the BaTi4O9 content increases, the tunability of composite ceramics decreases, while the Q value increases. Inter-estingly, 70 wt% BaTi4O9-doped BST has a tunability ~4.0% (under 3. kV/cm biasing) versus a permit- tivity ~68 and quality factor ~13..1 (at ~3.2 GHz).

关键词： tunability microwave dielectric properties composite ceramics

CABOSFV algorithm for high dimensional sparse data clustering

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Journal of university of science and technology Beijing 2004年第3期11卷 283-288页

作者： Sen Wu Xuedong Gao Management school, university of science and {3. Beijing, Beijing 100083. china Mgmt. Sch. Univ. of Sci. and Technol. Beijing Beijing 100083 China

An algorithm, Clustering Algorithm Based On Sparse Feature Vector (CABOSFV),was proposed for the high dimensional clustering of binary sparse data. This algorithm compressesthe data effectively by using a tool 'Sparse Feature Vector', thus reduces the data scaleenormously, and can get the clustering result with only one data scan. Both theoretical analysis andempirical tests showed that CABOSFV is of low computational complexity. The algorithm findsclusters in high dimensional large datasets efficiently and handles noise effectively.

关键词： clustering data mining sparse high dimensionality

A computational investigation of boron-doped chromium and chromium clusters by density functional theory

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science china(Physics,Mechanics & Astronomy) 2010年第5期53卷 812-817页

作者： GE GuiXian1,JING Qun1 & LUO YouHua2,3.1 Key Laboratory of Ecophysics and Department of Physics,Normal College,Shihezi university,Xinjiang 83.003.china 2 school of {3.,East china university of {3. and technology,shanghai 20023.,china 3.Institute of Theoretical Physics,school of Physics and Information Optoelectronics,Henan university,Kaifeng 475004,china 1. Key Laboratory of Ecophysics and Department of Physics Normal College Shihezi University Xinjiang 832003 China2. School of Science East China University of Science and Technology Shanghai 200237 China3. Institute of Theoretical Physics School of Physics and Information Optoelectronics Henan University Kaifeng 475004 China

The geometries,stabilities and electronic properties of Crn and CrnB(n=2-9) clusters have been systematically investigated by density functional *** results suggest that the lowest energy structures for CrnB clusters can be obtained by substituting one Cr atom in Crn+1 clusters with B *** geometries of CrnB clusters are similar to that of Crn+1 clusters except for local structural *** second-order difference and fragmentation energy show Cr4,Cr6,Cr8,Cr3.,Cr5B and Cr8B cluster are the most stable among these studied *** impurity B increases the stabilities of chromium *** B is doped on the Crn clusters,cluster geometry does dominate positive role in enhancing their *** doped B atom does not change the coupling way of the Cr site in Crn clusters,but breaks the symmetry and the Cr atoms are no longer *** doped B atom increases the total magnetic moments of Crn in most cases.

关键词： Crn and CrnB clusters geometries electronic properties

Identification and genetic mapping of four novel genes that regulate leaf development in Arabidopsis

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Cell Research 2000年第4期10卷 325-335页

作者： SUN YUE WEI ZHANG FENG LING LI YING LI GUO TIAN LEI LIU HAI HUANG shanghai Institute of Plant Physiology, Chinese Academy of science, 3.0 Fenglin Road, shanghai 20003.,{3. school of life sciences, university of science and technology of{3.. 1shanghai Institute of Plant Physiology Chinese Academy of Science 300 Fenglin Road Shanghai 200032 China 1shanghai Institute of Plant Physiology Chinese Academy of Science 300 Fenglin Road Shanghai 200032 China 1shanghai Institute of Plant Physiology Chinese Academy of Science 300 Fenglin Road Shanghai 200032 China 2school of life sciences University of Science and Technology of China. P.O.Box 4 Hefei Anhui 230027 China 1shanghai Institute of Plant Physiology Chinese Academy of Science 300 Fenglin Road Shanghai 200032 China 3.0} Research Center of life sciences Chinese Academy of Sciences 320 Yueyang Road Shanghai 200031 China

Molecular and genetic characterizations of mutants have led to a better understanding of many developmental processes in the model system Arabidopsis thaliana. However, the leaf development that is specific to plants has been little studied. With the aim of contributing to the genetic dissection of leaf development, we have performed a large-scare screening for mutants with abnormal leaves. Among a great number of leaf mutants we have generated by T-DNA and transposon tagging and ethylmethae sulfonate (EMS) mutagenesis, four independent mutant lines have been identified and studied genetically. Phenotypes of these mutant lines represent the defects of four novel nuclear genes designated LL1 (LOTUS LEAF 1), LL2 (LOTUS LEAF 2), URO (UPRIGHT ROSETTE), and EIL (ENVIRONT CONDITION INDUCED LESION). The phenotypic analysis indicates that these genes play important roles during leaf development. FOr the further genetic analysis of these genes and the map-based cloning of LL1 and LL2, we have mapped these genes to chromosome regions with an efficient and rapid mapping method.

关键词： Arabidopsis leaf mutant leaf development genetic mappin?

FOURIER PSEUDOSPECTRAL-FINITE DIFFERENCE METHOD FOR INCOMPRESSIBLE FLOW

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Journal of Computational Mathematics 1994年第4期12卷 312-329页

作者： Guo Ben-yu Xiong Yue-shan(shanghai university of science and {3., shanghai, china ) shanghai UNIV SCI & TECHNOL SHANGHAIPEOPLES R CHINA

A Fourier pseudospectral-finite difference scheme is proposed for unsteady Navier-Stokes equation. It is showed that the numerical solution keeps semi-discrete conservation. The strict error estimation is established.... 详细信息

关键词： Math FOURIER PSEUDOSPECTRAL-FINITE DIFFERENCE METHOD FOR INCOMPRESSIBLE FLOW

A NEW NUMERICAL METHOD FOR GROUNDWATER FIOW AND SOLUTE TRANSPORT USING VELOCITY FIELD

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Journal of Hydrodynamics 2008年第3期20卷 356-364页

作者： ZHANG Qian-fei LAN Shou-qi WANG Yan-ming XU Yong-fu school of Naval Architecture Ocean and Civil Engineering Shanghai Jiaotong University Shanghai 200030China shanghai Municipal Engineering Design Institute Shanghai 200092 China Department of Geotechnical Engineering Tongji University Shanghai 200092 China

A new numerical method for groundwater flow analysis was introduced to estimate simultaneously velocity vectors and water pressure head. The method could be employed to handle the vertical flow under variably saturated conditions and for horizontal flow as well. The method allows for better estimation of velocities at the element nodes which can be used as direct input to transport models. The advection-dispersion process was treated by the Eulerian-Lagrangian approach with particle tracking technique using the velocities at FEM nodes. The method was verified with the classical one dimensional model and applied to simulate contaminant transport process through a slurry wall as a barrier to prevent leachate pollution from a sanitary landfill.

关键词： groundwater flow solute transport velocity vectors finite element method Eulerian-Lagrangian approach particletracking technique

Density functional theory study on the structural and electronic properties of Ag-adsorbed (MgO)_n clusters

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science china(Physics,Mechanics & Astronomy) 2009年第5期52卷 734-741页

作者： GE GuiXian1, JING Qun1 & LUO YouHua2,3.1 Key Laboratory of Ecophysics and Department of Physics, Normal College, Shihezi university, Shihezi 83.003. china 2 school of {3., East china university of {3. and technology, shanghai 20023., china 3.Institute for Theoretical Physics, Henan university, Kaifeng 475004, china Key Laboratory of Ecophysics and Department of Physics Normal College Shihezi University Shihezi 832003 China school of science East China University of Science and Technology Shanghai 200237 China Institute for Theoretical Physics Henan University Kaifeng 475004 China

Equilibrium geometries, charge distributions, stabilities and electronic properties of the Ag-adsorbed (MgO)n (n = 1-8) clusters have been investigated by density functional theory (DFT) with generalized gradient approximation (GGA) for exchange-correlation functional. The results show that hollow site is energetically preferred for n≥4, and the incoming Ag atoms tend to cluster on the existing Ag cluster. The Mulliken populations indicate that the interaction between the Ag atom and Magnesia clusters is mainly induced by a weak atomic polarization. The adsorbed Ag atom only causes charge redistributions of the atoms near itself. The effect of the adsorbed Ag atom on the bonding natures and structural features of Magnesia clusters is minor. Furthermore, the investigations on the first energy difference, fragmentation energies and electron affinities show that the Ag(MgO)4 and Ag(MgO)6 are the most stable among studied clusters.

关键词： Ag (MgO)_n clusters geometries electronic properties