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Scatter-hoarding rodents as secondary seed dispersers of a frugivore-dispersed tree Scleropyrum wallichianum in a defaunated Xishuangbanna tropical forest, China

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Integrative Zoology 2011年第3期6卷 227-234页

作者： Lin CAO Zhishu XIAO Cong guo Jin CHEN Key Laboratory of Bio-resources and Eco-environment Ministry of EducationCollege of Life ScienceSichuan UniversityChengduChina State Key Laboratory of Integrated Management of Pest Insects and Rodents in Agriculture Institute of ZoologyChinese Academy of SciencesBeijingChina Chinese Academy of Sciences Key Laboratory of Tropical Forest EcologyXishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglaYunnanChina

Local extinction or population decline of large frugivorous vertebrates as primary seed dispersers,caused by hu-man disturbance and habitat change,might lead to dispersal limitation of many large-seeded fruit ***,it is not known whether or not scatter-hoarding rodents as secondary seed dispersers can help maintain natural regeneration(*** dispersal)of these frugivore-dispersed trees in the face of the functional reduction or loss of primary seed *** the present study,we investigated how scatter-hoarding rodents affect the fate of tagged seeds of a large-seeded fruit tree(Scleropyrum wallichianum Arnott,1838,Santalaceae)from seed fall to seedling establishment in a heavily defaunated tropical forest in the Xishuangbanna region of Yunnan Province,in south-west China,in 2007 and *** results show that:(i)rodents removed nearly all *** seeds in both years;(ii)a large proportion(2007,75%;2008,67.5%)of the tagged seeds were cached individually in the surface soil or under leaf litters;(iii)dispersal distance of primary caches was further in 2007(19.6±14.6 m)than that in 2008(14.1±11.6 m),and distance increased as rodents recovered and moved seeds from primary caches into subsequent caching sites;and(iv)part of the cached seeds(2007,3.2%;2008,2%)survived to the seedling stage each *** study suggests that by taking roles of both primary and secondary seed dispersers,scatter-hoarding rodents can play a significant role in maintaining seedling establishment of ***,and are able to at least partly compensate for the loss of large frugivorous vertebrates in seed dispersal.

关键词： frugivorous vertebrate scatter-hoarding rodents Scleropyrum wallichianum seed dispersal seedling recruitment

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PREPARATION AND CHARACTERIZATION OF A HIGH TEMPERATURE WATER—G

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催化学报 1996年第5期17卷 394-396页

作者： Zhou Lingping guo DepartmentofChemistry ZhengzhouuniversityZhengzho DepartmentofChemistry Zhengzh

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Finns-Kingdom RNA Silencing in Plant-Fungal Pathogen Interactions

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Molecular Plant 2018年第2期11卷 235-244页

作者： Chenlei Hua Jian-Hua Zhao Hui-Shan guo State Key Laboratory of Plant Genomics Institute of Microbiology Chinese Academy of Sciences 100101 Beijing China College of Life Science University of the Chinese Academy of Sciences 100049 Beijing China

Fungal pathogens represent a major group of plant invaders that are the causative agents of many notorious plant diseases. Large quantities of RNAs, especially small RNAs involved in gene silencing, have been found to transmit bidirectionally between fungal pathogens and their hosts. Although host-induced gene silencing （HIGS） technology has been developed and applied to protect crops from fungal infections, the mechanisms of RNA transmission, especially small RNAs regulating trans- kingdom RNA silencing in plant immunity, are largely unknown. In this review, we summarize and discuss recent important findings regarding trans-kingdom sRNAs and RNA silencing in plant-fungal pathogen interactions compared with the well-known RNAi mechanisms in plants and fungi. We focus on the interactions between plant and fungal pathogens with broad hosts, represented by the vascular pathogen Verticillium dahliae and non-vascular pathogen Botrytis cinerea, and discuss the known instances of natural RNAi transmission between fungal pathogens and host plants. Given that HIGS has been developed and recently applied in controlling Verticillium wilt diseases, we propose an ideal research system exploiting plant vasculature-Verticillium interaction to further study trans-kingdom RNA silencing.

关键词： fungal pathogens HIGS microRNA trans-kingdom RNAi small RNA Verticillium dahliae

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Dual Spectroscopic Responses of Pyridinium Hemicyanine Dyes to Anions

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Chinese Journal of Chemistry 2011年第9期29卷 1975-1981页

作者： Xie, Puhui guo, Fengqi Zhang, Dasheng Zhang, Lei College of Sciences Henan Agricultural University Zhengzhou Henan 450002 China Department of Chemistry Zhengzhou University Zhengzhou Henan 450001 China

The absorption and fluorescence spectroscopic responses of three pyridinium hemicyanine dyes to anions F , Cl , Br , I-, H2P02, HS04 and OAc- were investigated. At lower concentrations of OAc- （less than 1 equiv.）, both the absorption and the fluorescence intensities of 1--3 were more effectively changed than F at iden- tical concentrations. At higher concentrations of OAc （more than 1 equiv.）, the interaction was opposite for each compound. 1H NMR results indicated the interaction between 1, 2 or 3 and F- proceeded through hydrogen bonding. The results showed that these dyes are promising to develop dual fluorescence and chromogenic chemo- sensors toward F- and OAc- according to the subtle difference in the affinity of F and OAc .

关键词： hemicyanine absorption spectra fluorescence spectra chemosensors anions

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Framed slotted ALOHA with grouping tactic and binary selection for anti-collision in RFID systems

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The Journal of China Universities of Posts and Telecommunications 2009年第4期16卷 47-52页

作者： WANG Ya-qi JIANG guo-ping WANG Jing Center for Control and Intelligence Technology Nanjing University of Posts and Telecommunications Nanjing 210003 China

In radio frequency identification （RFID） systems, tag collision arbitration is a significant issue for fast tag identification. This article proposes a novel tag anti-collision algorithm called framed slotted ALOHA with grouping tactic and binary selection （GB-FSA）. The novelty of GB-FSA algorithm is that the reader uses binary tree algorithm to identify the tags according to the collided slot counters information. Furthermore, to save slots, tags are randomly divided into several groups based on the number of collided binary bits in the identification codes （IDs） of tags, and then only the number of the first group of tags is estimated. Performance analysis and simulation results show that the GB-FSA algorithm improves the identification efficiency by 9.9%-16.3% compared to other ALOHA-based tag anti-collision algorithms when the number of tags is 1000.

关键词： RFID anti-collision binary tree identification efficiency

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Infrared emissivity and microwave absorbing property of epoxy-polyurethane/annealed carbonyl iron composites coatings

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Science China(Technological Sciences) 2012年第3期55卷 623-628页

作者： CHEN YanPeng XU guoYue guo TengChao ZHOU Ning College of Material Science and Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China

The microwave absorption property and infrared emissivity have been investigated for the single-layer coating made of the epoxy-polyurethane resin and carbonyl iron powders with variation of annealing treatment. Microwave-absorbing property was investigated by measuring the complex permittivity and complex permeability of the absorber in the frequency range from 2 to 18 GHz. Infrared emissivity value was measured using IR-2 Infrared Emissometer in the wavelength range of 8-14 μm. After annealing, the Fe （110） peak became sharp, and the crystallization improved significantly. Annealing treatment could reduce the sttrface energy of powders, improve compatibility between fillers and adhesives, and result in increase of the density of the coating. The lowest value of infrared emissivity （0.419） was obtained from the coating made of the carbonyl iron powder annealed at 700℃ for 1 h. With the variation of the annealing temperature, the magnetic and dielectric properties of the carbonyl iron particle were changed. The maximum reflection loss decreased and the matching frequency shifted to lower frequency with increasing the annealing temperature of carbonyl iron particles, which coincided with the variation of the complex permeability and permittivity according to the annealing temperature. Magnetic loss factor and dielectric loss factor of carbonyl iron particles were improved with increasing the annealing temperature in the 2-18 GHz range.

关键词： carbonyl iron infrared emissivity microwave absorbing property annealing treatment

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Integrable Variable-coefficient Coupled Cylindrical NLS Equations and Their Explicit Solutions

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Acta Mathematicae Applicatae Sinica 2014年第4期30卷 1017-1024页

作者： Ting SU guo-hua DING Jian-yin FANG Department of Mathematical and Physical Science Henan Institute of Engineering

Based on the generalized dressing method, we propose integrable variable coefficient coupled cylin-drical nonlinear SchrSdinger equations and their Lax pairs. As applications, their explicit solutions and their reduct... 详细信息

关键词： variable-coefficient coupled NLS equations the generalized dressing method integrability

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Microstructure and texture evolution in fully pearlitic steel during wire drawing

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Science China(Technological Sciences) 2013年第5期56卷 1139-1146页

作者： guo Ning LUAN BaiFeng WANG BingShu LIU Qing Department of Materials Science and Engineering Southwest University Department of Materials Science and Engineering Chongqing University Department of Materials Science and Engineering Fuzhou University

The evolution of morphology of pearlite and crystallographic texture of ferrite matrix in fully pearlitic steels during wire drawing were quantitatively investigated. The study revealed that a fiber structure of the pearlite morphology and a 〈110〉 fi- ber texture of the ferrite matrix begin to take shape and develop gradually with increasing strain. The growth rates of the fiber structure and the 〈110〉 texture are different in different regions within the wires with increasing drawing strain. There is a close relationship between the pearlite morphology and the crystalline texture during wire drawing. The pearlite interlamellar spacing （ILS） and thickness of cementite lamellae （To） decrease gradually both in longitudinal and transverse sections. The definition of pearlite colony should be reconsidered for describing microstructure of the wire drawing deformed pearlitic steels.

关键词： pearlitic steel wire drawing microstructure texture

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Evaluating Logical Expressions by Membrane Systems

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Chinese Journal of Electronics 2014年第2期23卷 278-283页

作者： guo Ping JI Jinfang CHEN Haizhu LIU Ran College of Computer Science Chongqing University Chongqing Key Laboratory of Software Theory and Technology Department of Software Engineering Chongqing College of Electronic Engineering

Boolean and relational operations, which are defined for solving mathematically logical problems,are always required in computing models. Membrane computing is a kind of distributed parallel computing *** this paper, we design different membranes for implementing primary Boolean and relational operations respectively. And based on these membranes, a membrane system can be constructed by a present algorithm for evaluating a logical expression. Some examples are given to illustrate how to perform the Boolean, relational operations and evaluate the logical expression correctly in these membrane systems.

关键词： Boolean operation Relational operation Logical expression Membrane computing P systems

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Aldol Reactions Catalyzed by Proline Functionalized Polyacrylonitrile Fiber

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Chemical Research in Chinese Universities 2013年第2期29卷 256-262页

作者： XIAO Jia LI guo-wei ZHANG Wen-qin Department of Chemistry School of Sciences Tianjin University Tianjin 300072 P. R. China

A proline functionalized fiber catalyst was employed for aldol reactions in water. In the presence of the fiber catalyst, the aldol reactions proceeded smoothly at 40 ℃ and the products were obtained in excellent yields which were higher than those obtained for the reactions catalyzed by L-proline or trans-4-hydroxy-L-proline. This newly developed fiber catalyst is applicable to the reactions of a wide range of aromatic aldehydes and exhibits ex- cellent reusability（up to 6 times） without any additional treatment.

关键词： Polyacrylonitrile fiber(PANF) Proline Aldol reaction Supported catalyst

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