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17篇 您的检索式:作者名="AN YuWen"
    题名 作者 年代 出处 被引量
1ZmMs30 Encoding a Novel GDSL Lipase Is Essential for Male Fertility and Valuable for Hybrid Breeding in Maize显示文摘Genic male sterility (GMS) is very useful for hybrid vigor utilization and hybrid seed production. Although a large number of GMS genes have been identified in plants, little is known about the roles of GDSL lipase members in anther and pollen development. Here, we report a maize GMS gene, ZmMs30, which encodes a novel type of GDSL lipase with diverged catalytic residues. Enzyme kinetics and activity assays show that ZmMs30 has lipase activity and prefers to substrates with a short carbon chain. ZmMs30 is specifically expressed in maize anthers during stages 7-9. Loss of ZmMs30 function resulted in defective anther cuticle, irregular foot layer of pollen exine, and complete male sterility. Cytological and lipidomics analyses demonstrate that ZmMs30 is crucial for the aliphatic metabolic pathway required for pollen exine formation and anther cuticle development. Furthermore, we found that male sterility caused by loss of ZmMs30 function was stable in various inbred lines with different genetic background, and that it didn't show any negative effect on maize heterosis and production, suggesting that ZmMs30 is valuable for crossbreeding and hybrid seed production. We then developed a new multi-control sterility system using ZmMs30 and its mutant line, and demonstrated it is feasible for generating desirable GMS lines and valu. able for hybrid maize seed production. Taken together, our study sheds new light on the mechanisms of anther and pollen development, and provides a valuable male-sterility system for hybrid breeding maize.Xueli An Zhenying Dong Youhui Tian Ke Xie Suowei Wu Taotao Zhu Danfeng Zhang Van Zhou Canfang Niu Biao Ma Quancan Hou Jianxi Bao Simiao Zhang Ziwen Li Yanbo Wang Tingwei Yan Xiaojing Sun Yuwen Zhang Jinping Li Xiangyuan Wan 2019Molecular Plant2019,12,3:15
2An overview of design for CSNS/RCS and beam transport显示文摘The China Spallation Neutron Source (CSNS) is the first accelerator-based pulsed neutron source in China. Its accelerators are made up of an 80 MeV H- linac, a Rapid Cycling Synchrotron (RCS) and two beam transport lines. RCS accumulates and accelerates protons to the design energy of 1.6 GeV, and extracts high energy beam to strike the target. The overview of RCS is presented, and the key problems of the physics design are discussed. The two beam transport lines, from linac to RCS and from RCS to the target, are also introduced.WANG Sheng AN YuWen FANG ShouXian HUANG Nan LIU WeiBin LIU YuDong QIN Qing QIU Jing WANG Na XU Gang XU ShouYan YU ChengHui 2011Science China(Physics,Mechanics & Astronomy)2011,54,S2:11
3Paleozoic Intrusive Rocks in the Nalati Mountain Range(NMR), Southwest Tianshan: Geodynamic Evolution Based on Petrology and Geochemical Studies显示文摘A synthesis involving the data for the Nalati mountain region(NMR) in west Tianshan with a dataset including zircon U-Pb ages, Hf isotopic composition, major and trace elements of Paleozoic intrusions are presented to improve the understanding of regional geodynamic evolution. Paleozoic intrusive rocks in the NMR could be classified into four categories based on chronological and geochemical data: 480?5 Ma, 445–410 Ma, 345–320 Ma, and 295 Ma, which correspond to(1) closure of the Terskey Ocean and the opening of the south Tianshan back-arc basin, which was followed with the opening of the south Tianshan Ocean,(2) initial subduction of the south Tianshan oceanic crust,(3) major subduction stage, and(4) collision to post-collisional stage, respectively. Following the closure of the Terskey Ocean, the south Tianshan Ocean opened at Early Silurian and subducted under Yili-central Tianshan by the end of Early Carboniferous Period. The following breakoff of the subducted slab triggered partial melting of continental crust and formed voluminous granitic rocks in the NMR.Huichao Zhang Yongfeng Zhu Wanyi Feng Yuwen Tan Fang An Jiahao Zheng 2017Journal of Earth Science2017,28,2:9
4Compressional Wave Velocities in Some Volcanic Rocks at Pressure up to 4.5 GPa显示文摘INTRODUCTIONThecompressionalwavevelocity(vp)inrockmeasuredathighpressureandhightemperatureisofsignificantimpor-tancetoelucida...Zhou Wenge Zhao Zhidan Xie Hongsen Li Yuwen Guo Jie Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002 Xu Ji ’an Institute of Earth Sciences, Academia Sinica, Nankang PO Box1 55, Taipei, Taiwan 115 1998Journal of Earth Science1998,17,2:3
5Local Non-Similarity Solution of Coupled Heat-Mass Transfer of a Flat Plate with Uniform Heat Flux in a Laminar Parallel Flow显示文摘LocalNon-SimilaritySolutionofCoupledHeat-MassTransferofaFlatPlatewithUniformHeatFluxinaLaminarParallelFlowYuwenZhang;ZhongqiC...Yuwen Zhang Zhongqi Chen Mingyong Chen(Department of Power Machinery Engineering, Xi’an Jiaotong University, Xi’an 710049, China) 1996Journal of Thermal Science1996,5,2:2
6Genome-wide analyses on transcription factors and their potential microRNA regulators involved in maize male fertility显示文摘Anther development is a programmed biological process crucial to plant male reproduction. Genomewide analyses on the functions of transcriptional factor(TF) genes and their microRNA(miRNA) regulators contributing to anther development have not been comprehensively performed in maize. Here, using published RNA-Seq and small RNA-Seq(sRNA-Seq) data from maize anthers at ten developmental stages in three genic male-sterility(GMS) mutants(ocl4, mac1, and ms23) and wild type W23, as well as newly sequenced maize anther transcriptomes of ms7-6007 and lob30 GMS mutants and their WT lines, we analyzed and found 1079 stage-differentially expressed(stage-DE) TF genes that can be grouped into six(premeiotic, meiotic, postmeiotic, premeiotic-meiotic, premeiotic-postmeiotic, and meiotic-postmeiotic clusters) expression clusters. Functional enrichment combined with cytological and physiological analyses revealed specific functions of genes in each expression cluster. In addition, 118 stage-DE miRNAs and99 miRNA-TF gene pairs were identified in maize anthers. Further analyses revealed the regulatory roles of zma-miR319 and zma-miR159 as well as ZmMs7 and ZmLOB30 on ZmGAMYB expression. Moreover,ZmGAMYB and its paralog ZmGAMYB-2 were demonstrated as novel maize GMS genes by CRISPR/Cas9 knockout analysis. These results extend our understanding on the functions of miRNA-TF gene regulatory pairs and GMS TF genes contributing to male fertility in plants.Ziwen Li Taotao Zhu Shuangshuang Liu Yilin Jiang Haoyun Liu Yuwen Zhang Ke Xie Jinping Li Xueli An Xiangyuan Wan 2021The Crop Journal2021,9,6:2
7Iso -parametric Tool Path Generation from Triangular Meshes for Free-form Surface Machining显示文摘Sun Yuwen Guo Dongming Jia Zhenyt an 2006In- ternational Journal of Advanced Manufacturing Technology2006,28,7:1
8Landscape Pattern of Ancient Terraces in Huangping County and Slopeto-Terrace Strategy显示文摘Formation and development of ancient terraces proves that slope-to-terrace project is a signifi cant measure for conserving water and soil in mountainous areas. UAV remote sensing technology was applied to obtain RS images with a resolution ratio of 0.1–0.5 m, Arc GIS was applied for data processing, and Fragstats3.3 was used to calculate characteristic indexes, to study landscape pattern of 4 ancient terraces in Huangping County, Guizhou Province. The results showed that terrace landscapes and woodland landscapes in the study area account for nearly 80% of the whole landscape(terrace 30%, woodland 50%); mean area of single fi eld is mainly concentrated between 100 m^2 and 200 m^2, and height between 0.7 m and 1.7 m, breadth 0.5 m and 0.6 m; most terraces have a gradient of 5–25°, accounting for 70% of the total number of fi eld. The water and soil conservation concept in the ancient terraces provides references for the slope-to-terrace project and the water and soil loss control of slope farmland.LAN An'jun ZHAN Fengli FU Yuwen ZHONG Jiusheng LIU Fayong YOU Boyu 2016Journal of Landscape Research2016,8,2:1
9Effective start-up biofiltration method for Fe,Mn, and ammonia removal and bacterial community analysis 显示文摘CAI Yah'an LI Dong LIANG Yuwen 2015Bioresource Technology2015,176,1:1
10The development of perturbation model for fringe field in Open XAL and its application in beam commissioning of CSNS显示文摘Background The China Spallation Neutron Source(CSNS)accelerator employs Open XAL as the control software in beam commissioning.The main magnets of CSNS/RCS have serious fringe field effect;however,there is not corresponding model for fringe field in Open XAL.Purpose The purpose is to develop a suitable model for fringe field and append to the online model of Open XAL.Methods On the basis of the requirements of beam commissioning and model features of Open XAL,a perturbation model was developed to correct the effect of fringe field.Results The comparison of the parameters calculated by slice model with the values obtained from Open XAL with perturbation model showed the validity of the model.Furthermore,with the response matrix method,the values obtained from Open XAL with perturbation model were very close to the measured response matrices,which showed the accuracy of the model.Conclusion The perturbation model is effective for correcting the fringe field effect in Open XAL.Xiaohan Lu Jianliang Chen Shouyan Xu Ming-Yang Huang Yuwen An Sheng Wang 2018Radiation Detection Technology and Methods2018,2,2:1
11The Impact of Team - member Exchange, Differentiation, Team Commitment, and Knowledge Sharing on R&D Project Team Performance显示文摘Yuwen Liu Robert T Keller Hsi -An Shih 2011R&D Management2011,41,3:1
12The compensation of quadrupole errors and space charge effects by using trim quadrupoles显示文摘The China Spallation Neutron Source (CSNS) accelerators consist of an H- linac and a proton Rapid Cycling Synchrotron (RCS). RCS is designed to accumulate and accelerate proton beam from 80 MeV to 1.6 GeV with a repetition rate of 25 Hz. The main dipole and quadruple magnet will operate in AC mode. Due to the adoption of the resonant power supplies, saturation errors of magnetic field cannot be compensated by power supplies. These saturation errors will disturb the linear optics parameters, such as tunes, beta function and dispersion function. The strong space charge effects will cause emittance growth. The compensation of these effects by using trim quadruples is studied, and the corresponding results are presented.AN YuWen WANG Sheng 2011Science China(Physics,Mechanics & Astronomy)2011,54,S2:1
13Upgrade of the sextupole field for beam instability mitigation in rapid cycling synchrotron of China Spallation Neutron Source显示文摘Background The China Spallation Neutron Source incorporates a rapid cycling synchrotron(RCS)that operates by accumulating protons at 80 MeV and subsequently accelerating them to 1.6 GeV within a time span of 20 ms.The beam is guided to striking the tungsten target for neutron source.Purpose As a space charge dominated machine,the RCS is subject to space charge effects and momentum spread,hereby influencing the tune spread.To address this issue,sextupole magnets,powered by two families of DC power supply,were initially employed to decrease the absolute value of chromaticity and to control the tune spread.The head-tail instability has been observed during the RCS beam commissioning.Method The beam tests and simulations were conducted,revealing that tuning the chromaticity proved to be an effective mitigation strategy.However,to achieve better control over the tune spread and further suppress the instability,the DC sextupole field has been upgraded to an AC sextupole field,aiming to provide dynamic for controlling the chromaticity over an acceleration cycle.Results and conclusion Thanks to the upgraded of AC field,the instability has been fully mitigated with beam power of 100 kW and the transmission in the RCS has been improved by~2%from 96 to 98%.With help of AC sextupole at present,the beam power in the RCS is increased to 140 kW.Liangsheng Huang Yuwen An Changdong Deng Yuan Huang Shouyan Xu 2023Radiation Detection Technology and Methods2023,7,4:0
14Analysis of Solidiflcation in the Presence of High Rayleigh Number Convection in an Enclosure显示文摘AnalysisofSolidiflcationinthePresenceof HighRayleighNumberConvectioninanEnclosureYuwenZhang(SchoolofEnergyandPowerMachineryEn...Yuwen Zhang (School of Energy and Power Machinery Engineering, Xi’an Jiaotong University, Xi’an 710049, China)Yonglin Ju (Chinese Academy of Sciences, BeiJing, China) 1994Journal of Thermal Science1994,3,3:0
15Fabrication of the Coatings for the High-temperature Oxidation Resistance on Hydrogen Resistance Steel显示文摘Alumina coating is used to improve the performance of high-temperature oxidation resistance,which can be fabricated on the surface of hydrogen resistance steel by two methods,thermal oxidation of arc ion plated Al coating and reactive magnetron sputtering.Elemental composition,structures and surface morphologies of the coating were analyzed and compared in this paper.The surface of the coatings,which was made by the first method,was composed of α-Al2O3 phase and internal was Fe-Al alloy phase.The Alumina coatings made by the second method were amorphous.In addition,appearances of Alumina coatings fabricated by these two methods were quit different,which were grey and transparent respectively.Both of the two kinds of coatings meet to the needs of high-temperature oxidation resistance.Yang Wenmao Luo Yuwen Wu Zhiyong Li Shanzhen Li Chang'an Li Xueyuan Du Wen-Hao Chen Binzhou 2012稀有金属材料与工程2012,41,S1:0
16Haploids can be induced in knockout mutants of OsPLA1,but not OsDMP3 or OsDMP6,in rice显示文摘Doubled haploid(DH)technology is an important tool in crop breeding because it can significantly accelerate the breeding process.ZmPLA1/MATL/NLD and ZmDMP are two key genes controlling haploid induction(HI)in maize,exhibiting a synergistic effect.However,it is unknown whether knock out of ZmDMP orthologs can stimulate HI in rice.In this study,a ZmPLA1 ortholog(OsPLA1)and two ZmDMP orthologs(OsDMP3 and OsDMP6)were identified in rice.All three genes encode plasma membrane-localized proteins and were highly expressed in mature anthers.Knockout of OsPLA1 in both Minghui 63 and Nipponbare resulted in reduced seed setting rate(SSR)and caused HI.The osdmp3,osdmp6 and the double mutant failed to trigger HI independently,nor increased the haploid induction rate(HIR)when combined with ospla1.Repeated pollinations operations of QX654A with the ospla1 mutant significantly improve SSR,while reducing HIR.RNA-seq profiling of mature ospla1 mutant anthers indicated that a large number of differentially expressed genes(DEGs)were enriched in redox homeostasis and lipid metabolic GO terms,plant hormone signal transduction,and MAPK signaling pathways.These findings provide important insights towards construction of an efficient DH breeding technology and study of the molecular mechanism of HI in rice.Zongkai Liu Yu Zhong Xiaolong Qi Tai An Shuwei Guo Dong Wang Yuwen Wang Bin Feng Zuofeng Zhu Shaojiang Chen Chenxu Liu 2024The Crop Journal2024,12,1:0
1710 Gb/s classical secure key distribution based on temporal steganography and private chaotic phase scrambling显示文摘Secure distribution of high-speed digital encryption/decryption keys over a classical fiber channel is strongly pursued for realizing perfect secrecy communication systems.However,it is still challenging to achieve a secret key rate in the order of tens of gigabits per second to be comparable with the bit rate of commercial fiber-optic systems.In this paper,we propose and experimentally demonstrate a novel solution for high-speed secure key distribution based on temporal steganography and private chaotic phase scrambling in the classical physical layer.The encryption key is temporally concealed into the background noise in the time domain and randomly phase scrambled bit-by-bit by a private chaotic signal,which provides two layers of enhanced security to guarantee the privacy of key distribution while providing a high secret key rate.We experimentally achieved a record classical secret key rate of 10 Gb/s with a bit error rate lower than the hard-decision forward error correction(HD-FEC)over a 40 km standard single mode fiber.The proposed solution holds great promise for achieving high-speed key distribution in the classical fiber channel by combining steganographic transmission and chaotic scrambling.ZHENSEN GAO ZHITAO DENG LIHONG ZHANG XULIN GAO YUEHUA AN ANBANG WANG SONGNIAN FU ZHAOHUI LI YUNCAI WANG YUWEN QIN 2024Photonics Research2024,12,2:0
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