|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Population Genomic Analysis and De Novo Assembly Reveal the Origin of Weedy Rice as an Evolutionary Game显示文摘Crop weediness,especially that of weedy rice(Oryza sativa f.spontanea),remains mysterious.Weedy rice possesses robust ecological adaptability;however,how this strain originated and gradually formed proprietary genetic features remains unclear?Here,we demonstrate that weedy rice at Asian high latitudes(WRAH)is phylogenetically well defined and possesses unselected genomic characteristics in many divergence regions between weedy and cultivated rice.We also identified novel quantitative trait loci underlying weedy-specific traits,and revealed that a genome block on the end of chromosome 1 is associated with rice weediness.To identify the genomic modifications underlying weedy rice evolution,we generated the first de novo assembly of a high-quality weedy rice genome(WR04-6),and conducted a comparative genomics study between WR04-6 with other rice reference genomes.Multiple lines of evidence,including the results of demographic scenario comparisons,suggest that differentiation between weedy rice and cultivated rice was initiated by genetic improvement of cultivated rice and that the essence of weediness arose through semi-domestication.A plant height model further implied that the origin of WRAH can be modeled as an evolutionary game and indicated that strategy-based selection driven by fitness shaped its genomic diversity. | Jian Sun Dianrong Ma Liang Tang Minghui Zhao Guangchen Zhangh Wenjia Wang Jiayu Song Xiang Li Zimeng Liu Wenxing Zhang Quan Xu Yuncheng Zhou Jianzhong Wu Toshio Yamamoto Fei Dai Yan Lei Song Li Gang Zhou Hongkun Zheng Zhengjin Xu Wenfu Chen | 2019 | Molecular Plant2019，12，5： | 9 |
| 2 | Area-oriented coordinated trajectory planning of dual-arm space robot for capturing a tumbling target显示文摘The growing amount of space debris poses a threat to operational spacecraft and the long-term sustainability of activities in outer space. According to the orbital mechanics, an uncontrolled space object will be tumbling, bringing great challenge to capture and remove it. In this paper, a dual-arm coordinated ‘‘Area-Oriented Capture'(AOC) method is proposed to capture a non-cooperative tumbling target. Firstly, the motion equation of the tumbling target is established, based on which, the dynamic properties are analyzed. Then, the ‘‘Area-Oriented Capture'concept is presented to deal with the problem of large pose(position and attitude) deviation and tumbling motion. An area rather than fixed points/devices is taken as the object to be tracked and captured. As long as the manipulators’ end-effectors move to a specified range of the objective areas(not fixed points on the target, but areas), the target satellite will be hugged by the two arms.At last, the proposed method and the traditional method(i.e. fixed-point oriented capture method)are compared and analyzed through simulation. The results show that the proposed method has larger pose tolerance and takes shorter time for capturing a tumbling target. | Wenfu XU Lei YAN Zhonghua HU Bin LIANG | 2019 | Chinese Journal of Aeronautics2019，32，9： | 8 |
| 3 | Characteristics of pantograph‐catenary arc under low air pressure and strong airflow显示文摘Pantograph‐catenary arc fault is the primary factor threatening the stability of the power transmission for high‐speed railway.The motion characteristics of the pantograph‐catenary arc under low air pressure and strong airflow is significantly different from the case under atmospheric pressure.In this paper,an experimental platform of panto-graph‐catenary arc was built to investigate arc root position‐time and arc column lon-gitudinal drift height‐time characteristic curves under different air pressures and airflow velocites.Via analysing the corresponding results,it can be found that there are different arc root-arc column traction mechanisms at different stages of arc development.The arcing time and arc root stagnation time under low air pressure are significantly longer than the case under atmospheric pressure,resulting in more serious electrode ablation.The arc column longitudinal drift velocity and height are greater with the increase of airflow velocity.Two typical irregular arc motion phenomena-arc root jumping and arc reignition are observed.To clarify the internal mechanism of the above phenomenon,a magnetohydrodynamics(MHD)model of the pantograph‐catenary arc was lauched,the influence mechanism of the pantograph‐catenary arc temperature and voltage are studied,and the physical process of arc temperature oscillation is analysed.The research results provide theoretical support for arc protection in high‐altitude areas. | Zhilei Xu Guoqiang Gao Wenfu Wei Zefeng Yang Wenhan Xie Keliang Dong Yaguang Ma Yan Yang Guangning Wu | 2022 | High Voltage2022，7，2： | 7 |
| 4 | Defect Engineering on Carbon‑Based Catalysts for Electrocatalytic CO2 Reduction显示文摘Electrocatalytic carbon dioxide(CO2)reduction(ECR)has become one of the main methods to close the broken carbon cycle and temporarily store renewable energy,but there are still some problems such as poor stability,low activity,and selectivity.While the most promising strategy to improve ECR activity is to develop electrocatalysts with low cost,high activity,and long-term stability.Recently,defective carbon-based nanomaterials have attracted extensive attention due to the unbalanced electron distribution and electronic structural distortion caused by the defects on the carbon materials.Here,the present review mainly summarizes the latest research progress of the construction of the diverse types of defects(intrinsic carbon defects,heteroatom doping defects,metal atomic sites,and edges detects)for carbon materials in ECR,and unveil the structure-activity relationship and its catalytic mechanism.The current challenges and opportunities faced by high-performance carbon materials in ECR are discussed,as well as possible future solutions.It can be believed that this review can provide some inspiration for the future of development of high-performance ECR catalysts. | Dongping Xue Huicong Xia Wenfu Yan Jianan Zhang Shichun Mu | 2021 | Nano-Micro Letters2021，13，1： | 4 |
| 5 | Synthesis and conductivity of substituted heteropoly acid with Dawson structure H_7[Ga(H_2O)P_2W_(17)O_(61)].18H_2O显示文摘A new solid high-proton conductor,H7[Ga(H2O)P2W17O61].18H2O,a substituted heteropoly acid with Dawson structure,has been synthesized by the degradation/ion-exchange/freezing method.The product was characterized by potentiometric titration,chemical analysis,IR,UV,XRD and TG-DTA.Complex impedance measurements show a high conductivity(5.44×10-3 S/cm at 50℃),with an activation energy for proton conduction of 36.04 kJ/mol.The mechanism of proton conduction is the Vehicle mechanism. | QIAN XueYu HE ZhiQi WU QingYin TONG Xia YAN WenFu GONG Jian | 2011 | Chinese Science Bulletin2011，56，22： | 2 |
| 6 | Recovery of a Far-Eastern Strain of Tick-Borne Encephalitis Virus with a Full-Length Infectious cDNA Clone显示文摘Tick-borne encephalitis virus(TBEV) is a pathogenic virus known to cause central nervous system(CNS) diseases in humans, and has become an increasing public health threat nowadays. The rates of TBEV infection in the endemic countries are increasing. However, there is no effective antiviral against the disease. This underscores the urgent need for tools to study the emergence and pathogenesis of TBEV and to accelerate the development of vaccines and antivirals. In this study, we reported an infectious c DNA clone of TBEV that was isolated in China(the WH2012 strain). A beta-globin intron was inserted in the coding region of nonstructural protein 1(NS1) gene to improve the stability of viral genome in bacteria. In mammalian cells, the inserted intron was excised and spliced precisely, which did not lead to the generation of inserted mutants. High titers of infectious progeny viruses were generated after the transfection of the infectious clone. The cDNA-derived TBEV replicated efficiently, and caused typical cytopathic effect(CPE) and plaques in BHK-21 cells. In addition, the CPE and growth curve of cDNA-derived virus were similar to that of its parental isolate in cells. Together, we have constructed the first infectious TBEV cDNA clone in China, and the clone can be used to investigate the genetic determinants of TBEV virulence and disease pathogenesis, and to develop countermeasures against the virus. | Penghui Li Chen Yao Ting Wang Tong Wu Wenfu Yi Yue Zheng Yuanjiu Miao Jianhong Sun Zhongyuan Tan Yan Liu Xiaowei Zhang Hanzhong Wang Zhenhua Zheng | 2021 | Virologica Sinica2021，36，6： | 2 |
| 7 | Preparation and comparison of supported gold nanocatalysts on anatase, brookite, rutile, and P25 polymorphs of TiO2 for catalytic oxidation of CO 显示文摘 | Yan Wenfu Chen Bei Mahurin S M Schwartz V Mullins D R Lupini R Andrew Pennycook S J Dai Sheng Overbury S H | 2005 | Journal of Physical Chemistry B2005，109，10： | 1 |
| 8 | The structure-directing effect of n-propylamine in the crystallization of open-framework aluminophosphates显示文摘Using n-propylamine as a template,deioned water and secondary-butanol(butan-2-ol)as solvents,a three-dimensional(3D)open-framework aluminophosphate[C3NH10]·[HAl3P3O13](1)and a two-dimensional layered aluminophosphate[C3NH10]3·[Al3P4O16](2)were crystallized from the initial mixtures with compositions of Al2O3:2.4 P2O5:5.0 n-propylamine:100 H2O/butan-2-ol,respectively.They are characterized by X-ray powder diffraction(XRD),thermogravimetric(TG),and elemental(CHN)analyses and structurally determined by single-crystal X-ray diffraction analysis.Compound 1 crystallizes in the monoclinic space group P21/c with a=0.85831(13)nm,b=1.7677(3)nm,c=1.04353(12)nm,=123.887(9)°,and V=1.3143(3)nm3.Compound 2 crystallizes in the monoclinic space group P21/c with a=1.1313(2)nm,b=1.4874(3)nm,c=1.8020(6)nm,=125.07(2)°,and V=2.4817(11)nm3.The results show that the properties of solvent have a significant influence on the structure-directing effect of n-propylamine in the crystallization of the open-framework aluminophosphates. | LU HuiYing YAN Yan TONG XiaoQiang YAN WenFu YU JiHong XU RuRen | 2014 | Science China Chemistry2014，57，1： | 1 |
| 9 | A new fluoroaluminophosphate chain with an Al/P Ratio of unity显示文摘 | YAN Wenfu YU Jihong SHI Zhan | 2001 | Inorg Chem2001，40，： | 1 |
| 10 | An anionic aluminophosphate molecular sieve with Brnsted acidity显示文摘 | YAN Wenfu YU Jihong XU Ruren | 2000 | Chem Mater2000，12，： | 1 |
| 11 | Structure-directing Effect on Synthesis of Layered Aluminophosphates with Same Topology显示文摘 | WANG Aitian XU Jun WANG Chao DENG Feng XU Ruren YAN Wenfu | 2017 | Chemical Research in Chinese Universities2017，33，4： | 1 |
| 12 | Fluorinaled carbon with ordered mesoporous structure 显示文摘 | Li Zuojiang Guillermo D Del Cul Yan Wenfu | 2004 | Journal of the Amer- ican Chemical Society2004，126，12： | 1 |
| 13 | Molecular engineering of microporous crystals: (VI) Structure-directing effect in the crystallization process of layered aluminophosphates显示文摘 | Xiaoqiang Tong Jun Xu Liang Xin Pai Huang Huiying Lu Chao Wang Wenfu Yan Jihong Yu Feng Deng Huai Sun Ruren Xu | 2012 | Microporous and Mesoporous Materials2012，，： | 1 |
| 14 | Molecular engineering of microporous crystals: (V) Investigation of the structure-directing ability of piperazine in forming two layered aluminophosphates显示文摘 | Xiaoqiang Tong Jun Xu Chao Wang Huiying Lu Pai Huang Wenfu Yan Jihong Yu Feng Deng Ruren Xu | 2012 | Microporous and Mesoporous Materials2012，，： | 1 |
| 15 | Condensed-matter chemistry:from materials to living organisms显示文摘We have proposed, in a recent essay entitled 'Towards a new discipline of condensed matter chemistry'[1], a new research field to study the functionalities and chemical reactions of condensed matter [2] with multi-level structures, characterized by strong intermolecular forces and local organizational order. In this perspective, we suggest possible ways to study their properties and reactions in relevance to specific organizational characteristics of their surroundings in the condensed-matter states, using solid-state materials with special functions and living organisms with complex high-order structures, specifically solidstate superconductive materials;catalysts and biological condensed materials (BCMs) in the context of synthetic and biological chemistry, as illustrative examples. | Ruren Xu Kui Wang Gang Chen Wenfu Yan | 2019 | National Science Review2019，6，2： | 1 |
| 16 | One-step controllable synthesis for high-quality ultrafine metal oxide semiconductor nanocrystals via a separated two-phase hydrolysis reaction显示文摘 | Tang Kangjian Zhang Jianan Yan Wenfu | 2008 | J Am Chem Soc2008，130，： | 1 |
| 17 | Direct in situ erystallization of highly oriented siliealite-1 thin films on a surface sol-gel process modified substrate 显示文摘 | Di Jiancheng Zhang Cong Yan Wenfu | 2011 | Mieroporous and Mesoporous Materials2011，145，13： | 1 |
| 18 | Effect of Surface Texture on Tensile Shear Strength of 1060Al-PET Welding Joints显示文摘Joining metal to plastic can lighten weight of products to reduce energy consumption.However,it is difficult to achieve high-strength welding between metal and plastic.To address this problem,the methods of surface texture pretreatment and laser irradiation welding was proposed to achieve the high-strength connection of metal and plastic.In this study,with different parameters of laser power and texture morphology,1060 Al with surface texture treatment was joined to polyethylene terephthalate(PET)by laser irradiation welding from metal side.Study showed that as the laser power increased,the tensile shear strength of joints increased first,and decreased thereafter.Tensile shear tests demonstrated that the mechanical force of joint was strengthened contributed to mechanical anchorage formed by surface texture.The depth-width ratio of the texture grooves affected the tensile shear process of the joint.According to the result of temperature simulation,the existence of texture grooves reduced the heat transfer efficiency,and the heat dissipation at interface was also impeded in course of laser welding.Finally,the maximum tensile strength of 1060Al-PET joint reached 48.4 MPa,which was close to the strength of PET matrix.The bonding mechanism of the 1060Al-PET joints was composed of mechanical bonding and chemical bonding.This study proposes an effective method to join metal to plastic which achieved high-strength connection between metal and plastic. | Jia Liu Yuchi Dai Yan Shi Wenfu Cui Tao Jiang | 2021 | Chinese Journal of Mechanical Engineering2021，34，5： | 1 |
| 19 | Evaluation of the Au size effect: CO oxidation catalyzed by Au/TiO2 显示文摘 | Overbury S H Schwartz V Mullins D R Yan Wenfu Dai Sheng | 2006 | Journal of Catalysis2006，241，1： | 1 |
| 20 | Synthesis, characterization and properties of ruthenium-substituted polyoxometallic acid H_6Ru(H_2O)FeW_(11)O_(39)·18H_2O with Keggin structure显示文摘The ruthenium-substituted polyoxometallic acid H6 [Ru(H2O)FeW 11O39 ]·18H2O was synthesized by stepwise acidification and stepwise addition of solutions of the component elements, and an ion-exchange-cooling method. The product was characterized using inductively coupled plasma spectrometry (ICP), Infrared Spectroscopy (IR), Ultraviolet Spectroscopy (UV), and X-ray diffraction (XRD). The results show that this complex has the Keggin structure. The determination of the thermal stability and proton conductivity of this polyoxometallic acid was carried out by a thermogravimetric-differential thermal analysis (TG-DTA) and electrochemical impedance spectroscopy (EIS). | XU ShengXian WU XueFei WU QingYin YAN WenFu | 2011 | Chinese Science Bulletin2011，56，25： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员