检索结果-南通市图书馆

On p-variation of bifractional Brownian motion

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics(A Journal of Chinese Universities) 2011年第2期26卷 127-141页

作者： wang wen-sheng Department of Mathematics Hangzhou Normal University Hangzhou 310036 China

In this paper we study p-variation of bifractional Brownian motion. As an applica-tion, we introduce a class of estimators of the parameters of a bifractional Brownian motion andprove that both of them are strongly consistent; as another application, we investigate fractalnature related to the box dimension of the graph of bifractional Brownian motion.

关键词： Bifractional Brownian motion variation strongly consistent fractal nature.

Single Mode Simulation Calculation of Oscillating Buoy Wave Energy Converter with A Slider

在线全文

学校读者我要写书评

暂无评论

China Ocean Engineering 2020年第4期34卷 547-557页

作者： XIAO Lei YOU Ya-ge wang Zhen-peng ZHANG Ya-qun HUANG Shuo wang wen-sheng Guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou 510640China Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development Guangzhou 510640China Southern Marine Science and Engineering Guangdong Laboratory Guangzhou 511458China Key Laboratory of Renewable Energy Chinese Academy of SciencesGuangzhou 510640China Innovation Academy of South China Sea Ecology and Environmental Engineering Chinese Academy of SciencesGuangzhou 510640China University of Chinese Academy of Sciences Beijing 100049China

This paper presents an oscillating slider wave energy device which is based on a seabed anchoring and uses eagle beak as the *** self-compiled program uses the boundary element theory based on the simple Green’s function to solve the wave forces and hydrodynamic *** the equation of motion,the oscillation of the float and the capture width ratio are obtained by the modal *** influences of the shape of the eagle beak,the angle of the slider and the wave heading on the capture ability of the device are *** to the calculation results and the wave resources in the sea area,the optimal shape of the eagle beak and external damping can be selected to maximize the wave energy capture capability.

关键词： wave energy converter(WEC) Sharp Eagle hydrodynamic calculation eagle beak

Synthesis,Crystal Structure and Luminescent Properties of a 1D Loop-chain Coordination Polymer [Ag(3,3-pybz)(3,3-Hpybz)]_n

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2013年第12期32卷 1767-1772页

作者： TANG Long FU Feng WEI Qing-Bo wang sheng-wen ZHANG Zhu-Lian Yan'an University Department of Chemistry and Chemical EngineeringShaanxi Key Laboratory of Chemical Reaction Engineering

A new coordination polymer, [Ag（3,3-pybz）（3,3-Hpybz）]n （1, 3,3-Hpybz = 3-pyri- din-3-yl-benzoic acid）, has been synthesized and characterized by elemental analysis, IR spectra, PXRD, and single-crystal X-ray diffraction. In complex 1, the Ag（1）ions are linked by the paired 3,3-pybz ligands to generate an infinite 1D loop chain, and further through π-π stacking interactions to form a 2D supramolecular architecture. Crystal data for 1： triclinic, space group P1, a = 10.2635（17）, b = 10.3041（12）, c = 10.8060（13） A, V= 1679.1（5）A3, α = 62.028（11）, β = 80.325（15）, γ = 78.738（14）°, Z = 2, C24H17AgN2O4, Mr = 505.27, Dc= 1.698 g/cm3, μ= 1.058 mm--, F（000） = 506, S = 1.012 and T = 293（2） K. The final R = 0.0293 and wR = 0.0667 for 3435 observed reflections with I〉 2a（/）, and R = 0.0350 and wR = 0.0688 for all data.

关键词： Ag(I) compound crystal structure luminescent properties

Identification and validation of root-specific promoters in rice

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2015年第1期14卷 1-10页

作者： HUANG Li-yu ZHANG Fan QIN Qiao wang wen-sheng ZHANG Ting FU Bin-ying National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences Chinese Academy of Agricultural Sciences

Novel promoters that confer root-specific expression would be useful for engineering resistance against problems of nutrient and water absorption by roots. In this study, the reverse transcriptase polymerase chain reaction was used to identify seven genes with root-specific expression in rice. The isolation and characterization of upstream promoter regions of five selected genes rice root-specific promoter （rRSP） 1 to 5 （rRSP1-rRSP5） and A2P （the promoter of OsAct2） revealed that rRSP1, rRSP3, and rRSP5 are particularly important with respect to root-specific activities. Furthermore, rRSP1, rRSP3, and rRSP5 were observed to make different contributions to root activities in various species. These three promoters could be used for root-specific enhancement of target gene（s）.

关键词： rice root-specific promoters expression profile

On Chinese Cultural Subjectivity Regarding Exemplary and Narrative Language: Based on Ricoeur’s Research of Narrative

在线全文

学校读者我要写书评

暂无评论

Cultural and Religious Studies 2019年第11期7卷 587-599页

作者： wang wen-sheng National Chengchi University Taipei CityTaiwan

Exemplary language can,on the one hand,assist a listener to understand what a speaker intends to express,and,on the other hand,provoke a kind of practical force to the *** language is everywhere in our daily life,such as the bedtime stories told by a mother to her child,literary works,and judicial *** Western philosophers have expounded on this type of *** language has become a topic for philosophical *** Chinese classics,there are many expressions using exemplary language,but in different *** there any philosophical reflection on these exemplary languages?The differences between the Chinese and the Western exemplary language initiate our discussion about the different subjectivity of exemplary language,or narrative subjectivity,for narrative will be discussed in this article as an extraordinary exemplary *** a kind of exemplary language,narrative is analyzed by Ricoeur into two elements:time and *** his analysis also valid for Chinese narrative language?Can we discuss the difference of narrative subjectivity according to these two elements?The author is going to trace the origins of different subjectivity by analyzing distinct ways of creating characters/words which determinate different language forms in Chinese and the Western *** author finds that“linear time”(or objective time)still plays a significant role in the Western culture;by contrast,subjective time seems more dominant in Chinese *** also determines the narrative time for *** for the meaning,there are different purposes and ways of using narrative in Chinese culture and the Western culture,which are reflected,for example,in the different purposes of the Chinese and Western *** article aims to explore Chinese narrative subjectivity based on Ricoeur’s research of narrative.

关键词： exemplary language narrative Confucianism Zhuangzi narrative time narrative meaning

Transcriptome and metabolome profiling of unheading in F1 hybrid rice

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2020年第10期19卷 2367-2382页

作者： wang Jie WEIS hao-bo wang Chun-chao Najeeb Ullah KHAN ZHANG Zhan-ying wang wen-sheng ZHAO Xiu-qin ZHANG Hong-liang LI Zi-chao GAO Yong-ming National Key Facility for Crop Gene Resources and Genetic Improvement/lnstitute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081P.R.China Key Laboratory of Crop Heterosis and Utilization Ministry of Education/Key Laboratory of Crop Genetic ImprovementBeijing Municipality/College of Agronomy and BiotechnologyChina Agricultural UniversityBeijing 100193P.R.China

Heading date is a crucial agronomic ***,rice usually delays heading due to the photoperiod,temperature,hormones or *** present research was conducted to analyze the mechanism cotrlling heading date in F,hybrid *** constructed two test-crossing populations using two introgression lines(ILs),P20 and P21 coming from SH527/FH838 as the male parent,respectively,and male sterile line Jin23A as the female ***,the F,hybrids of H20,obtained by mating P20 with Jin23A and having no heading,and H21,from the crossing between P21 and Jin23A having normal heading,were both observed under long ***,we analyzed the photoperiodic response of F,hybrids by transcriptome and metabolome *** greater differences displayed in the transcriptome and the metabolome were caused by photoperiod(exogenous)instead of genes(endogenous).The coping mechanism resulted from long days(LD)in H20,leading to differences in the circadian rhythm and glutathione metabolism relative to other *** circadian oscillator and GSH/GSSG cycle typically regulate ROS homeostasis,and both of them are responsible for modulating ROS in H20 under LD *** circadian rhythm genes and the reported genes related to heading date function via the DHD1/OsMFT1-Ehd1-RFT1-OsMADS14/OsMADS18 pathway and the glutathione metabolism pathway by regulating oxidative reduction *** pathways are involved in the heading process and they interacted through the oxidative reduction process which was induced by photoperiod regulation,and all of them collectively modulated the heading *** results of this study will be helpful for unraveling the mechanism of F,hybrid responses to unheading under LD condition.

关键词： F1hybrid rice unheading transcriptome profiles metabolome profiles

Effects of Fe and Mn in Paddy Soils Derived from Different Parent Materials on Methane Production and Emission

在线全文

学校读者我要写书评

暂无评论

Pedosphere 2003年第4期13卷 337-344页

作者： LIU Ke-Xing, LIAO Zong-wen, wang sheng-Chun and YOU Zhi-LinCollege of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642 College of Natural Resources and Environment South China Agricultural University Guangzhou 510642 (China)

Three types of paddy soils, derived from granite, Quaternary red clay andbasalt, respectively, were selected to study the effects of Fe and Mn in paddy soils on methaneproduction and emission through pot and incubation experiments. The results indicated that thedifference of Fe and Mn in paddy soils was one of the important factors causing obvious differencesin methane emission from different soil types. Soil Fe and Mn affecting methane emission from thepaddy soils was likely through affectingsoil Eh and forming Fe and Mn plagues on rice *** rates and valences of added Fe and Mn significantly affected methane production from paddysoils. Therefore, this study enhanced understanding of processes controlling methane emission frompaddy soils and may help to improve modeling and estimating regional and global methane emissionfrom paddy soils.

关键词： Fe methane emission methane production Mn paddy soil

Debris Flow Hazard Assessment Using Set Pair Analysis Models:Take Beichuan County as an Example

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain Science 2014年第4期11卷 1015-1022页

作者： YANG Feng-guang LIANG Yue SINGH Vijay P. wang wen-sheng ZHOU Xiao-quan LIU Xing-nian CAO Shu-you HUANG Er WU Yan-hua State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University College of Water Resource & Hydropower Sichuan University Department of Biological and Agricultural Engineering Texas A & M University College Station Texas 77843-2117 USA

Assessment of debris flow hazards is important for developing measures to mitigate the loss of life and property and to minimize environmental damage. Two modified uncertainty models, Set Pair Analysis （SPA） and modified Set Pair Analysis （mSPA）, were suggested to assess the regional debris flow hazard. A ease study was conducted in seven towns of the Beichuan county, Sichuan Province, China, to test and compare the application of these two models in debris flow hazard assessment. The results showed that mSPA only can fit for value-variables, but not for non value-variable assessment indexes, Furthermore, as for a given assessment index xi, mSPA only considers two cases, namely, when grade value increases with xi and when grade value decreases with xi. Thus, mSPA can not be used for debris flow hazard assessment but SPA is credible for the assessment because there are no limitations when using SPA model to assess the debris flow hazard. Therefore, in this study SPA is proposed for assessing debris flow hazard.

关键词： Set Pair Analysis (SPA) Modified SetPair Analysis (mSPA) Debris flow Hazardassessment Connection degree

Advanced Backcross QTL Analysis for the Whole Plant Growth Duration Salt Tolerance in Rice(Oryza sativa L.)

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2014年第8期13卷 1609-1620页

作者： CHAI Lu ZHANG Jian PAN Xiao-biao ZHANG Fan ZHENG Tian-qing ZHAO Xiu-qing wang wen-sheng Ali Jauhar XU Jian-long LI Zhi-kang National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences Chinese Academy of Agricultural Sciences Crop Research Institute Taizhou Academy of Agricultural Sciences of Zhejiang Province International Rice Research Institute DAPO 777 Metro Malina The Philippines

Salinity is a major factor limiting rice yield in coastal areas of Asia. To facilitate breeding salt tolerant rice varieties, the wholeplant growth duration salt tolerance（ST） was genetically dissected by phenotyping two sets of BC2F5 introgression lines（ILs） for four yield traits under severe natural salt stress and non-stress filed conditions using SSR markers and the methods of advanced backcross QTL（AB-QTL） analysis and selective introgression. Many QTLs affecting four yield traits under salt stress and nonstress conditions were identified, most（〉90%） of which were clustered in 13 genomic regions of the rice genome and involved in complex epistasis. Most QTLs affecting yield traits were differentially expressed under salt stress and non-stress conditions. Our results suggested that genetics complementarily provides an adequate explanation for the hidden genetic diversity for ST observed in both IL populations. Some promising Huanghuazhan（HHZ） ILs with favorable donor alleles at multiple QTLs and significantly improved yield traits under salt stress and non-stress conditions were identified, providing excellent materials and relevant genetic information for improving rice ST by marker-assisted selection（MAS） or genome selection.

关键词： rice whole plant growth duration salt tolerance quantitative trait loci(QTLs) epistasis