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50篇 您的检索式:作者名="Wencai Yang"
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1Multi-scale inversion of density structure from gravity anomalies in Tarim Basin显示文摘Based on the power spectra of gravity anomalies in Tarim Basin, the anomalies can be decomposed to the following three components: a sub-anomaly formed mainly by the basin crystallized basement, a sub-anomaly formed mainly by deep sedimentary layers, and that by shallow sedimentary layers. A special wavelet transform analysis scheme and a density inversion method are designed and applied to the decomposition and inversion of gravity sub-anomalies, which are correlated with regional geology and drilling data. The results indicate that the deep and the shallow sub-anomalies show some relations with ancient fluid active zones. The negative density disturbances inversed from the shallow sub-anomaly are mainly caused by Mesozoic fluid active zones, whereas the negative density disturbances form the deep sub-anomalies are mainly correlated with Paleozoic fluid active zones. As the ancient fluid movement was good for formation of oil/gas fields, the multi-scale inversion methods for locating the ancient fluid movement zones seem to be helpful and valuable to oil/gas exploration.HOU ZunZe YANG WenCai 2011Science China Earth Sciences2011,54,3:30
2Lithospheric seismic fabrics of Sulu ultrahigh-pressure metamorphic belt显示文摘Calibration of seismic reflectors appearing in the crust of the Chinese continent sci- entific drilling site can be completed through the correlation studies between direct evidences, such as the drill cores, and geophysical signatures; therefore the interpretation of geophysical data could produce reliable results of crustal structure and composition. On the other hand, there are two Cenozoic volcanoes close to the scientific drilling site; analyzing composition of xenoliths existent in the volcanoes and evaluating their seismic velocities can also offer information about the mantle and lower crust. After the calibration via cores and well-logging data, the seismic re- flectors appearing in the UHP belt can be caused by lithological changes within the UHP rock slice, ductile shearing rock-suites, and later fracture zones. Among these sources, ductile shearing resulted in displacement and detachment of original rock-sheets, producing some rock-interbeds of several hundred meters thick that are named the ductile shearing rock-suites. A suite consists of mylonized gneiss and eclogite slices that underwent shearing, becoming the major mechanism responsible to generate regional strong reflections. The UHP rock-slice is characterized by complicated structures and high density, high seismic velocity and high electri- cal resistivity, its thickness is usually less than 11 km. Velocity and density of the gneiss-layer beneath gradually tend to normal with increasing depth. Based on the xenoliths we can infer that the middle crust contains a lot of gneisses, and the lower crust consists of different granulites. The lithospheric mantle has multi-layer structures and consists mainly of spinal lherzolite and harzburgite, implying late Mesozoic lithospheric thinning. The seismic fabrics with different ori- gins were possible products of different geodynamic processes. For instance, the UHP rock-slice was produced by the UHP metamorphic process and the exhumation of subducted supercrustal rocks after the Triassic collision between the Yangtze and Sino-Korean cratons; whilst the ductile shearing rock-suites resulted from shearing deformation processes during the subduction and exhumation. The normal velocity below the UHP rock-slice was correlated with Mesozoic exten- sion processes in the area. Through careful calibration of seismic reflectors and analyzing xeno- liths, one can find the relationship between the causes of seismic reflectors and corresponding geodynamic processes, offering a new basis for reconstruction of regional dynamic evolution history.YANG Wencai 1 , YANG Wuyang 1 , JIN Zhenmin 2 & CHENG Zhenyan 1 1. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China 2. China University of Geosciences, Wuhan 430074, China 2005Science China Earth Sciences2005,48,5:13
3Discovering Crustal Deformation Bands by Processing Regional Gravity Field显示文摘Objectives:This article presents a new computational procedure to discover scratches buried in the earth's crust.We also validate this new interdisciplinary analysis method with regional gravity data located in a well-known Dabie orogenic zone for test.Methods:Based on the scratch analysis method evolved with mathematical morphology of surfaces,we present a procedure that extracts information of the crustal scratches from regional gravity data.Because the crustal scratches are positively and highly correlated to crustal deformation bands,it can be used for delineation of the crustal deformation belts.The scratches can be quantitatively characterized by calculation of the ridge coefficient function,whose high value traces delineate the deformation bands hidden in the regional gravity field.In addition,because the degree of crustal deformation is an important indicator of tectonic unit divisions,so the crust can be further divided according to the degree of crustal deformation into some tectonic units by using the ridge coefficient data,providing an objective base map for earth scientists to build tectonic models with quantitative evidence.Results:After the ridge coefficients are calculated,we can further enhance the boundary of high ridge-coefficient blocks,resulting in the so-called ridge-edge coefficient function.The high-value ridge-edge coefficients are well correlated with the edge faults of tectonic units underlay,providing accurate positioning of the base map for compilation of regional tectonic maps.In order to validate this new interdisciplinary analysis method,we select the Dabie orogenic zone as a pilot area for test,where rock outcrops are well exposed on the surface and detailed geological and geophysical surveys have been carried out.Tests show that the deformation bands and the tectonic units,which are conformed by tectonic scientists based on surface observations,are clearly displayed on the ridge and ridge-edge coefficient images obtained in this article.Moreover,these computer-generated images provide more accurate locations and geometric details.Conclusions:This work demonstrates that application of modern mathematical tools can promote the quantitative degree in research of modern geosciences,helping to open a door to develop a new branch of mathematical tectonics.YANG Wencai SUN Yanyun 2016Acta Geologica Sinica(English Edition)2016,90,1:11
4Improved Brassica rapa reference genome by single-molecule sequencing and chromosome conformation capture technologies显示文摘Brassica rapa comprises several important cultivated vegetables and oil crops.Current reference genome assemblies of Brassica rapa are quite fragmented and not highly contiguous,thereby limiting extensive genetic and genomic analyses.Here,we report an improved assembly of the B.rapa genome(v3.0)using single-molecule sequencing,optical mapping,and chromosome conformation capture technologies(Hi-C).Relative to the previous reference genomes,our assembly features a contig N50 size of 1.45 Mb,representing a~30-fold improvement.We also identified a new event that occurred in the B.rapa genome~1.2 million years ago,when a long terminal repeat retrotransposon(LTR-RT)expanded.Further analysis refined the relationship of genome blocks and accurately located the centromeres in the B.rapa genome.The B.rapa genome v3.0 will serve as an important community resource for future genetic and genomic studies in B.rapa.This resource will facilitate breeding efforts in B.rapa,as well as comparative genomic analysis with other Brassica species.Lei Zhang Xu Cai Jian Wu Min Liu Stefan Grob Feng Cheng Jianli Liang Chengcheng Cai Zhiyuan Liu Bo Liu Fan Wang Song Li Fuyan Liu Xuming Li Lin Cheng Wencai Yang Mai-he Li Ueli Grossniklaus Hongkun Zheng Xiaowu Wang 2018Horticulture Research2018,5,1:10
5Microstructure evolution of semi-solid Mg-10Gd-3Y-0.5Zr alloy during isothermal heat treatment显示文摘In this study,the microstructure evolution of semi-solid Mg-10Gd-3Y-0.5Zr alloy during isothermal heat treatment has been investigated.The results show that primary particles coarsen continuously during the holding.Coarsening rate decreases with the increase of isothermal temperature.When isothermal temperature increases from 600℃ to 620℃,the dominant mechanism for coarsening changes from particle coalescence to Ostwald ripening.Equiaxed as-cast microstructure is beneficial to the semi-solid microstructure after isothermal heat treatment,which brings about the refinement and spheroidization of primary particles,and shortening of holding time.Significant modification of second phases can also be achieved after isothermal heat treatment,due to its unique solidification process.The optimum processing parameters for Mg-10Gd-3Y-0.5Zr alloy in isothermal heat treatment are isothermal temperature of 610℃-620℃ and holding time of 20-40 min.Guohua Wu Yang Zhang Wencai Liu Wenjiang Ding 2013Journal of Magnesium and Alloys2013,1,1:8
6Geothermal measurements in the pilot-boreholes of the China Continental Scientific Drilling显示文摘The geothermal measurements in the pilot-boreholes of the China Continental Scientific Drilling (CCSD) indicate that the temperature gradients in the target area of the deep drilling range from 19 to 26℃/km, which is lower than that (25-30℃/km) for the global continental area and similar to that for the KTB (21-28℃/km). Thermal conductivity measurements for 44 core samples show that the ultra-high pressure (UHP) metamorphic rocks have 50% higher thermal conductivity (with a mean of 3.94±1.26 W/mK) than that for the average value of the upper crust. The measured heat flow values vary between 76 and 80 mW/m2, higher than that for the global continental area (65±1.6 mW/m2) and the continental China (61±15.5mW/m2) as well as the adjacent North Jiangsu Basin (68 mW/m2), butlower than that below 1000 m in the KTB (85 mW/m2). The elevated heat flow in the pilot-boreholes can be attributed to the lateral heat concentration due to higher rock thermal conductivity of the VHP belt than that of the adjacentWANG Jiyang HU Shengbiao YANG Wencai CHEN Benhe CHEN Zhenyan LI Tiejun 2001Chinese Science Bulletin2001,46,20:7
7Breeding for Resistance to Tomato Bacterial Diseases in China:Challenges and Prospects显示文摘Four bacterial diseases including bacterial canker caused by Clavibacter michiganensis subsp. michiganensis, bacterial speck caused by Pseudomonas syringae pv. tomato, bacterial spot caused by at least four Xanthomonas species, and bacterial wilt caused by Ralstonia solanacearum are among the most devastating diseases in tomato(Solanum lycopersicum) production in China. However, almost no commercial cultivars currently growing in the country are resistant to these four bacterial diseases because little effort has been devoted to breeding for resistance. In addition,the existence of great natural variation in each pathogen and the quantitative inheritance of resistance add to the difficulties of developing cultivars with resistance to these diseases. In the past 20 years, molecular markers tightly linked to genes conferring resistance to these four bacterial diseases have been identified or gene-based markers have been developed, which may circumvent some of the problems associated with phenotypic selection for resistance to multiple bacterial pathogens and races. Here we present a review on current status of studies on these diseases and discuss the promise of new technologies in breeding for resistance to these bacterial diseases in China.WANG Yuqing ZHANG Yaxian GAO Zhipeng YANG Wencai 2018Horticultural Plant Journal2018,4,5:5
8Non-deterministic fatigue life analysis using convex set models显示文摘The non-probabilistic approach to fatigue life analysis was studied using the convex models-interval, ellipsoidal and multiconvex models. The lower and upper bounds of the fatigue life were obtained by using the second-order Taylor series and Lagrange multiplier method. The solving process for derivatives of the implicit life function was presented. Moreover, a median ellipsoidal model was proposed which can take into account the sample blind zone and almost impossibility of concurrence of some small probability events. The Monte Carlo method for multi-convex model was presented, an important alternative when the analytical method does not work. A project example was given. The feasibility and rationality of the presented approach were verified. It is also revealed that the proposed method is conservative compared to the traditional probabilistic method, but it is a useful complement when it is difficult to obtain the accurate probability densities of parameters.SUN WenCai YANG ZiChun LI KunFeng 2013Science China(Physics,Mechanics & Astronomy)2013,56,4:5
9PAP3 Regulates Stamen but Not Petal Development in Capsicum annuum L.显示文摘Pepper flowers are hermaphroditic; the plant's male sterility trait is characterized by its inability to produce pollen grains. In the ABC model of flower development, B-function genes play roles in petal and stamen development in the angiosperm. In this study, a B-class gene designated as PAP3 (Gen Bank accession no. HM104635) was isolated in pepper. The gene encoded 226 amino acids and shared high similarity with the MADS-box protein family, with a conservative MADS domain and semiconservative K domain. Furthermore, the expression of PAP3 was abundant only in petals and anthers but not in leaves. A functional study employing virus-induced gene silencing(VIGS) showed that knockdown of PAP3 led to the shriveling of pollen grains and male sterility; however, it did not affect petal development. These results suggest an essential role for PAP3 in the development of the pepper stamen and in contributing to the variation of floral traits.MA Ning LIU Chen YANG Wencai SHEN Huolin 2016Horticultural Plant Journal2016,2,2:5
10Synthesis and facet-dependent photocatalytic activity of strontium titanate polyhedron nanocrystals显示文摘Cubic-perovskite (SrTiO 3) 有一个大潜力在大量应用被利用。然而,当前,很,很少在他们的物理化学的性质上对形状和 SrTiO 3 的方面效果被知道。这大部分由于在在合成期间控制方面的形态学的困难。此处,我们为 singlecrystalline SrTiO 3 的控制方面、控制尺寸的制造描述一条灵巧的线路三角形的棱柱与高度暴露了 { 101 } 方面脸并且 { 111 } 结束脸。他们的 photocatalytic 表演的理论、试验性的研究证明了三角形的棱柱比 nanocubes 展出优异 photocatalytic 活动与暴露( 001 )为器官的沾染物的降级面对,它可以首先被归因于高得多的表面精力{ 101 }方面( 2.97 J/m 2)并且{ 111 }方面( 2.80 J/m 2)比的{ 001 }方面( 0.98 J/m 2)。Junfang Li Hua Bai Wencai Yi Jingyao Liu Yahui Li Qing Zhang Haifeng Yang Guangcheng Xi 2016Nano Research2016,9,5:4
11Seismic response to natural gas anomalies in crystalline rocks显示文摘According to the geological and seismic reflection data of the Chinese Continental Scientific Drilling (CCSD) main-hole (MH), and the anomalies of CH4, CO2, and He are correlated to the three-component seismic reflectors, especially in horizontal component profiles. However, the seismic response is dif-ficult to be explained as the porosity of crystalline rocks is only about 1% in well section where the gas anomalies occur. Seismic velocity measurement of the MH cores indicated that compared with wa-ter-saturated rock samples, seismic velocity (especially the S-wave) could be distinctly decreased by gas contained in tiny cracks despite of the low porosity, and then notable seismic response could be induced in gas-filled crystalline rocks. It could be predicated that if the porosity of certain rocks in the middle crust rose due to water-rock interaction and had natural gas filled, then there would be more probability for natural gas in top of the mid-crust to fill in the crystalline rocks with increased porosity. In such case, based on the decrease of Swave velocity in crystalline rocks, seismic method could be applied in the future to explore natural gas reservoirs in the middle crust.YANG WenCai JIN ZhenMin YU ChangQing 2008Science China Earth Sciences2008,51,12:4
12Origin of the Domesticated Horticultural Species and Molecular Bases of Fruit Shape and Size Changes during the Domestication, Taking Tomato as an Example显示文摘Domestication of crop plants is the foundation of modern agriculture, which brings forth desirable changes in cultivated species that distinguish them from their wild relatives. This resulted in the origin of crop species at known geographical locations coinciding with the transition of human societies from hunter-gather to agrarian civilizations. Fruit size and shape are very important traits for horticulture industry, as well as for studying the domestication of the horticultural species. In this review, we have summarized the origin of some widely-grown horticultural crops and also the molecular bases of the fruit size and shape changes of the horticultural crops during the domestication, taking tomato as an example.SUN Liang CHEN Jie XIAO Kai YANG Wencai 2017Horticultural Plant Journal2017,3,3:4
13Crustal Poisson's ratio anomalies in the eastern part of North China and their origins显示文摘Seismic tomography can provide both fine P-wave and S-wave velocity structures of the crust and upper mantle.In addition,with proper computation,Poisson's ratio images from the seismic velocities can be determined.However,it is unknown whether Poisson's ratio images have any advantages when compared with the P-wave and S-wave velocity images.For the purposes of this study,high-resolution seismic tomography under the eastern part of North China region was used to determine detailed 3-D crustal P- and S-wave seismic velocities structure,as well as Poisson's ratio images.Results of Poisson's ratio imaging show high Poisson's ratio(high-PR) anomalies located in the Hengshan-North Taihang-Zhangjiakou(H-NT-Z) region,demonstrating that Poisson's ratio imaging can provide new geophysical constraints for regional tectonic evolution.The H-NT-Z region shows a prominent and continuous high-PR anomaly in the upper crust.Based on Poisson's ratio images at different depths, we find that this high-PR anomaly is extending down to the middle crust with thickness up to about 26 km.According to rock physical property measurements and other geological data,this crustal Poisson's ratio anomaly can be explained by Mesozoic partial melting of the upper mantle and basaltic magma underplating related to the lithospheric thinning of the North China craton.Wencai Yang Chen Qu Changqing Yu 2011Geoscience Frontiers2011,2,3:4
14Tomato SlPUB24 enhances resistance to Xanthomonas euvesicatoria pv. perforans race T3显示文摘Solanum lycopersicum var.cerasiforme accession PI 114490 has broad-spectrum resistance to bacterial spot caused by several species of Xanthomonas.Resistance is quantitatively inherited,and a common quantitative trait locus QTL-11B on chromosome 11 has been identified previously.In this study,the SlPub24 gene was characterized in QTL-11B.SlPub24 in PI 114490 was upregulated by infection with X.euvesicatoria pv.perforans race T3,but its transcription was low in the susceptible line OH 88119 whether or not it was infected by the pathogen.The differential expression of SlPub24 between PI 114490 and OH 88119 was due to great sequence variation in the promoter region.The promoter of SlPub24 in OH 88119 had very low activity and did not respond to pathogen infection.Transgenic lines of OH 88119 overexpressing SlPub24 isolated from PI 114490 showed significantly enhanced resistance,while mutants of Slpub24 generated by CRISPR/Cas9 editing showed more susceptibility to race T3 and to other races.The mutants also showed spontaneous cell death in leaves.The expression of the salicylic acid(SA)pathway gene phenylalanine ammonia-lyase(PAL)and signaling-related genes pathogenesis-related(PR1)and nonexpresser of PR1(NPR1)were influenced by SlPub24.The content of SA in tomato plants was consistent with the level of SlPub24 expression.Furthermore,SlPUB24 interacted with the cell wall protein SlCWP and could regulate the degradation of SlCWP.The expression levels of SlCWP and SlCWINV1,a cell wall invertase gene,showed opposite patterns during pathogen infection.The activity of SlCWINV1 was lower in mutants than in PI 114490.The results are discussed in terms of the roles of the abovementioned genes,and a potential model for SlPUB24-mediated resistance to bacterial spot is proposed.Xin Liu Ge Meng Mengrui Wang Zilin Qian Yaxian Zhang Wencai Yang 2021Horticulture Research2021,8,1:4
15A review on developments in the electrical structure of craton lithosphere显示文摘Cratons have a long history of evolution.In this paper,applications of the magnetotelluric method used in the study of craton lithosphere over the past 30 years were reviewed,examining case studies of cratons in North America,South America,Asia,Australia,and Africa.The nuclei of the Archean cratons,for example the Kalahari Craton and Rae Craton,are usually characterized by thick and highly resistive lithospheric roots.During or after the formation of the cratons,tectonothermal events,such as collision,mantle plume,and asthenosphere upwelling led to the formation of high-conductivity zones in the craton lithosphere,which could be attributed to the increased hydrogen content(of nominally anhydrous minerals),higher iron content,and formation of graphite films or sulfides along the grain boundary of minerals.These conductive zones are characterized by resistivity discontinuities in craton lithosphere.In particular,the conductive zones include(1)large-scale lithospheric mantle conductors beneath the Slave Craton,Gawler Craton,and central part of North China Craton(Trans-North China Orogen);(2)near-vertical high-conductivity zone associated with the fossil subduction zone beneath the Dharwar Craton and Slave Craton;and(3)regional lateral electrical discontinuities,such as a conductive anomaly under the Bushveld Complex of the Kaapvaal Craton.The eMoho refers to the electrical discontinuity in the crust-mantle boundary.In existing research,this has been detected under the condition of extremely high lithospheric resistivity with only a slight decrease in the lower crust,and in the case of a very thin conductive lower crust or the lack thereof.In the resistivity model,the unique'mushroom-like'lower crust-lithosphere mantle conductor and very thin lower crust layer of the North China Craton may represent lithosphere destruction and/or thinning.We also find that some of the cratons are still not well understood.Therefore,extensive three-dimensional inversion and joint interpretation of geochemical,geophysical,and geologic data are necessary to understand the tectonic evolutionary history of craton lithosphere.Xiangyun HU Wule LIN Wencai YANG Bo YANG 2020Science China Earth Sciences2020,63,11:3
16Natural rubber/nitrile butadiene rubber/hindered phenol composites with high-damping properties显示文摘New natural rubber(NR)/nitrile butadiene rubber(NBR)/hindered phenol(AO-80)composites with high-damping properties were prepared in this study.The morpholo-gical,structural,and mechanical properties were characterized by atomic force micro-scopy(AFM),polarized Fourier transform infrared spectrometer(FTIR),dynamic mechanical thermal analyzer(DMTA),and a tensile tester.Each composite consisted of two phases:the NR phase and the NBR/AO-80 phase.There was partial compat-ibility between the NR phase and the NBR/AO-80 phase,and the NR/NBR/AO-80(50/50/20)composite exhibited a co-continuous morphology.Strain-induced crystal-lization occurred in the NR phase at strains higher than 200%,and strain-induced orientation appeared in the NBR/AO-80 phase with the increase of strain from 100%to 500%.The composites had a special stress–strain behavior and mechanical properties because of the simultaneous strain-induced orientation and strain-induced crystalliza-tion.In the working temperature range of a seismic isolation bearing,the composites(especially the NR/NBR/AO-80(50/50/20)composite)presented a high loss factor,high area of loss peak(TA),and high hysteresis energy.Therefore,the NR/NBR/AO-80 rubber composites are expected to have important application as a high-perfor-mance damping material for rubber bearing.Xiuying Zhao Jingna Yang Detao Zhao Yonglai Lu Wencai Wang Liqun Zhang Toshio Nishi 2015International Journal of Smart and Nano Materials2015,6,4:2
17Expanding the Wilson Cycle Based on Worldwide Comparison of Continental Structures Revealed by Lithospheric Geophysical Investigations显示文摘Worldwide comparison of lithospheric investigation results achieved from projects of COCORP,BIRPS,DEKORP,LITHOPROBE,ICDP,ECORS and SINOPROBE enables us to expand the classical Wilson cycle,which mainly describes evolution of ocean plates,into a complete and detailed cycle that describes generation,development and evolution of both ocean and continent plates. The expanded Wilson cycle presented in this paper introduces the evolution sequences of continental lithospheric processes by adding into the classical Wilson cycle with ocean-continent transition,continental collision and accretion,as well as continental rifting and splitting in details. These mentioned continental lithospheric processes have been presented by the author in a series of recent review papers in detail,and their summary and further deduction is presented in this paper.YANG Wencai 2015Acta Geologica Sinica(English Edition)2015,89,2:2
18Author Correction:Improved Brassica rapa reference genome by single-molecule sequencing and chromosome conformation capture technologies显示文摘Since the publication of this article,the authors have noticed that the total gene models(45,985),tandem arrays(2077),tandem genes(4963),redundancy removed(43,099),syntenic genes(39,858),nonsyntenic genes(3241),genes on chromosomes(45,411),genes on scaffolds(574)of B.rapa reference genome v3.0 were mistaken in the article.Lei Zhang Xu Cai Jian Wu Min Liu Stefan Grob Feng Cheng Jianli Liang Chengcheng Cai Zhiyuan Liu Bo Liu Fan Wang Song Li Fuyan Liu Xuming Li Lin Cheng Wencai Yang Mai-he Li Ueli Grossniklaus Hongkun Zheng Xiaowu Wang 2019Horticulture Research2019,6,1:2
19A set-based method for structural eigenvalue analysis using Kriging model and PSO algorithm显示文摘Yang Zichun Sun Wencai 2013Computer Modeling in Engineering&Sciences2013,92,2:1
20Mathematical simulation on coupled flow, heat, and solute transport in slab continuous casting process显示文摘Hongliang Yang Xingzhong Zhang Kaiwen Deng Wencai Li Yong Gan Liangang Zhao 1998Metallurgical and Materials Transactions B1998,,6:1
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