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78篇 您的检索式:作者名="Yunming"
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1Suppression or knockout of SaF/SaM overcomes the Sa-mediated hybrid male sterility in rice显示文摘Hybrids between the indica and japonica subspecies of rice(Oryza sativa) are usually sterile, which hinders utilization of heterosis in the inter-subspecific hybrid breeding. The complex locus Sa comprises two adjacently located genes, SaF and SaM, which interact to cause abortion of pollen grains carrying the japonica allele in japonica-indica hybrids. Here we showed that silencing of SaF or SaM by RNA interference restored male fertility in indica-japonica hybrids with heterozygous Sa. We further used clustered regularly interspaced short palindromic repeats(CRISPR)/Cas9-based genome editing to knockout the SaF and SaM alleles, respectively, of an indica rice line to create hybrid-compatible lines. The resultant artificial neutral alleles did not affect pollen viability and other agricultural traits, but did break down the reproductive barrier in the hybrids. We found that some rice lines have natural neutral allele Sa-n, which was compatible with the typical japonica or indica Sa alleles in hybrids. Our results demonstrate that SaF and SaM are required for hybrid male sterility, but are not essential for pollen development. This study provides effective approaches for the generation of hybrid-compatible lines by knocking out the Sa locus or using the natural Sa-n allele to overcome hybrid male sterility in rice breeding.Yongyao Xie Baixiao Niu Yunming Long Gousi Li Jintao Tang Yaling Zhang Ding Ren Yao-Guang Liu Letian Chen 2017Journal of Integrative Plant Biology2017,59,9:11
2Interference-assisted kaleidoscopic meta-plexer for arbitrary spin-wavefront manipulation显示文摘Achieving simultaneous polarization and wavefront control,especially circular polarization with the auxiliary degree of freedom of light and spin angular momentum,is of fundamental importance in many optical applications.Interferences are typically undesirable in highly integrated photonic circuits and metasurfaces.Here,we propose an interference-assisted metasurface-multiplexer(meta-plexer)that counterintuitively exploits constructive and destructive interferences between hybrid meta-atoms and realizes independent spin-selective wavefront manipulation.Such kaleidoscopic meta-plexers are experimentally demonstrated via two types of single-layer spinwavefront multiplexers that are composed of spatially rotated anisotropic meta-atoms.One type generates a spinselective Bessel-beam wavefront for spin-down light and a low scattering cross-section for stealth for spin-up light.The other type demonstrates versatile control of the vortex wavefront,which is also characterized by the orbital angular momentum of light,with frequency-switchable numbers of beams under linearly polarized wave excitation.Our findings offer a distinct interference-assisted concept for realizing advanced multifunctional photonics with arbitrary and independent spin-wavefront features.A variety of applications can be readily anticipated in optical diodes,isolators,and spin-Hall meta-devices without cascading bulky optical elements.He-Xiu Xu Guangwei Hu Ying Li Lei Han Jianlin Zhao Yunming Sun Fang Yuan Guang-Ming Wang Zhi Hao Jiang Xiaohui Ling Tie Jun Cui Cheng-Wei Qiu 2019Light(Science & Applications)2019,8,1:11
3Sap flow characteristics and physiological adjustments of two dominant tree species in pure and mixed plantations in the semi-arid Loess Plateau of China显示文摘It is essential to understand the water consumption characteristics and physiological adjustments of tree species under drought conditions,as well as the effects of pure and mixed plantations on these characteristics in semi-arid regions.In this study,the normalized sap flow(SF_n),leaf water potential,stomatal conductance(g_s),and photosynthetic rate(P_r)were monitored for two dominant species,i.e.,Pinus tabuliformis and Hippophae rhamnoides,in both pure and mixed plantations in a semi-arid region of Chinese Loess Plateau.A threshold-delay model showed that the lower rainfall thresholds(R^L)for P.tabuliformis and H.rhamnoides in pure plantations were 9.6 and 11.0 mm,respectively,and the time lags(τ)after rainfall were 1.15 and 1.76 d for corresponding species,respectively.The results indicated that P.tabuliformis was more sensitive to rainfall pulse than H.rhamnoides.In addition,strong stomatal control allowed P.tabuliformis to experience low g_s and P_r in response to drought,while maintaining a high midday leaf water potential(Ψ_m).However,H.rhamnoides maintained high g_s and P_r at a lowΨ_m expense.Therefore,P.tabuliformis and H.rhamnoides can be considered as isohydric and anisohydric species,respectively.In mixed plantation,the values of R^L for P.tabuliformis and H.rhamnoides were 6.5 and 8.9 mm,respectively;and the values ofτwere 0.86 and 1.61 d for corresponding species,respectively,which implied that mixed afforestation enhanced the rainfall pulse sensitivity for both two species,especially for P.tabuliformis.In addition,mixed afforestation significantly reduced SF_n,g_s,and P_r for P.tabuliformis(P<0.05),while maintaining a high leaf water potential status.However,no significant effect of mixed afforestation of H.rhamnoides was observed at the expense of leaf water potential status in response to drought.Although inconsistent physiological responses were adopted by these species,the altered water consumption characteristics,especially for P.tabuliformis indicated that the mixed afforestation requires further investigation.TANG Yakun WU Xu CHEN Yunming 2018Journal of Arid Land2018,10,6:7
4Review on the Relationship Between Liquid Aerospace Fuel Composition and Their Physicochemical Properties显示文摘The development of advanced air transportation has raised new demands for high-performance liquid hydrocarbon fuels.However,the measurement of fuel properties is time-consuming,cost-intensive,and limited to the operating conditions.The physicochemical properties of aerospace fuels are directly infl uenced by chemical composition.Thus,a thorough investigation should be conducted on the inherent relationship between fuel properties and composition for the design and synthesis of high-grade fuels and the prediction of fuel properties in the future.This work summarized the eff ects of fuel composition and hydrocarbon molecular structure on the fuel physicochemical properties,including density,net heat of combustion(NHOC),low-temperature fl uidity(viscosity and freezing point),fl ash point,and thermal-oxidative stability.Several correlations and predictions of fuel properties from chemical composition were reviewed.Additionally,we correlated the fuel properties with hydrogen/carbon molar ratios(n H/C)and molecular weight(M).The results from the least-square method implicate that the coupling of H/C molar ratio and M is suitable for the estimation of density,NHOC,viscosity and eff ectiveness for the design,manufacture,and evaluation of aviation hydrocarbon fuels.Xiaoyu Wang Tinghao Jia Lun Pan Qing Liu Yunming Fang Ji-Jun Zou Xiangwen Zhang 2021Transactions of Tianjin University2021,27,2:6
5Fatigue crack propagation behavior of Ni-based superalloys after overloading at elevated temperatures显示文摘The fatigue crack propagation behavior of three superalloys subjected to a single overloading at elevated temperatures was investigated. The fatigue crack propagation rate FCPR versus stress intensity factor range data da/dN—ΔK were calculated using the two-point secant method. It was found that the crack growth rates of the investigated materials were retarded after overloading with an overload ratio R OL=1.6. The size of the plastic zone in the front of the crack tip and its relation to loading level were discussed. The overload retardation effects are attributed to crack closure. The fatigue damage in the plastic zone can also be a factor to explain the overload retardation.Xinyue Huang Liang Wang Yunming Hu Guangping Guo David Salmon Ying Li Wenxia Zhao 2016Progress in Natural Science:Materials International2016,26,2:4
6Hard carbon derived from rice husk as low cost negative electrodes in Na-ion batteries显示文摘Here,we report the synthesis of hard carbon materials(RH) made from natural rice husk through a single pyrolysis process and their application as an anode in sodium-ion batteries.The studies show that the electrochemical properties of RHs are affected by the treatment temperatures,which determine the materials morphology,in particular,their degree of graphitization and extent of continuous channels(nanovoids).The latter are accessible to sodium ions and significantly contribute to charge storage capacity of the produced anodes.The RHs obtained at 1600 °C deliver the highest reversible capacity of276 mAh g^(-1) mainly due to insertion of sodium ions into the nanovoids.This work deepens the basic understanding of the influence of the carbonization temperature on the sodium storage mechanism.Maria K.Rybarczyk Yunming Li Mo Qiao Yong-Sheng Hu Maria-Magdalena Titirici Marek Lieder 2019Journal of Energy Chemistry2019,28,2:4
7High-efficiency broadband polarization-independent superscatterer using conformal metasurfaces显示文摘Safe detection of an arbitrarily shaped platform is critical for survivability, rescue, or navigation safety in a remote region. Metasurfaces afford great potential due to their strong electromagnetic(EM) wave control. However,studies have mainly focused on the physics and design of metasurfaces on planar plates, which does not satisfy the current requirements of aerodynamics and aesthetics. Herein, we propose a sophisticated strategy to design a metasurface that can wrap over arbitrarily shaped objects with moderate curvature on which optical aberrations are commonly introduced. By designing each meta-atom on the basis of the required position and phase compensation, exact EM wavefronts are restored. For verification, several conformal metasurfaces were designed and numerically studied on metallic cylinders at the microwave spectrum. A proof-of-concept device is fabricated and is experimentally characterized. The results demonstrate the availability of the desirable dual-beam superscatterer with strong backscattering enhancement toward two directions, thus indicating that the distortions induced by an arbitrary platform can be efficiently corrected. Our method affords an efficient alternative for designing highperformance multifunctional optoelectronic devices equipped on a moderately curved platform.HE-XIU XU SHIWEI TANG CHEN SUN LIANLIN LI HAIWEN LIU XINMI YANG FANG YUAN YUNMING SUN 2018Photonics Research2018,6,8:3
8Characterization and Molecular Mapping of a New Virescent Mutant in Rice显示文摘Plant leaves play a significant role in photosynthesis.Normal chloroplast development is critical for plant growth and yield performance.Defect of the chlorophyll in chloroplasts may cause abnormal leaf colors,such as yellow,white,or stripe.Chloroplasts have their own genomes encoding for about 100 genes that are essential for plastid protein synthesis and photosynthesis(Kanno and Hirai,1993;Qunyu Zhang Dexing Xue Xiaoyu Li Yunming Long Xianjie Zeng Yaoguang Liu 2014Journal of Genetics and Genomics2014,41,6:2
9Pure metal extraction from molten oxide slag by short-circuit galvanic cell显示文摘The oxygen-ion-permeable membrane galvanic short-circuit method has been developed, in which pure metal was directly extracted from the molten oxide slag, and no external voltage is applied. The galvanic cell employed in the experiment was as follows: graphite rod|[O]_(Fe+C saturation)[ZrO_2(MgO)|(FeO)_(slag))|Fe rod. The reduction current in the galvanic cell consisted of an external short-circuit current and an interior short-circuit current in the oxygen-ion-permeable membrane. The real-time variation of external circuit reduction ratio of the molten slag could be obtained from the curve of the external circuit current to the time.GAO Yunming, GUO Xingmin, and CHOU Kuochih 2004Rare Metals2004,23,3:2
10A New Species of the Genus Rhacophorus(Anura:Rhacophoridae) from Southern China显示文摘A new species of rhacophorid of the genus Rhacophorus is described from the Shiwandashan National Nature Reserve, Guangxi, Southern China. Rhacophorus pinglongensis sp. nov. is compared with congeners from China and other parts of Southeast Asia. The new species is distinguished from its congeners by combination of following characters:(1) small size(adult male, SVL 32.0-38.5 mm);(2) smooth and green dorsum;(3) flanks, axilla, ventral surface of forearms, inguinal, anterior and posterior surfaces of thighs, ventral surface of shank, and dorsal surface of feet covered with black blotches with white spots or white spots with a faint orange tint;(4) ventral surface of feet and webbing tangerine;(5) supratympanic fold weak;(6) outer margin of forearms and feet with low dermal ridges;(7) calcars absent on heels;(8) iris silver, diffusing to ecru laterally with light khaki ring along margin. The new species is closely related to R. dorsoviridis, R. moltrechti, and R. nigropunctatus based on adult morphology. Currently, this species is known only from mid-elevation montane evergreen forest in the Shiwandashan National Nature Reserve, Guangxi, China.Yunming MO Weicai CHEN Xiaowen LIAO Shichu ZHOU 2016Asian Herpetological Research2016,7,3:2
11Two Ultraviolet Radiation Datasets that Cover China显示文摘Ultraviolet(UV) radiation has significant effects on ecosystems, environments, and human health, as well as atmospheric processes and climate change. Two ultraviolet radiation datasets are described in this paper. One contains hourly observations of UV radiation measured at 40 Chinese Ecosystem Research Network stations from 2005 to 2015. CUV3 broadband radiometers were used to observe the UV radiation, with an accuracy of 5%, which meets the World Meteorology Organization's measurement standards. The extremum method was used to control the quality of the measured datasets. The other dataset contains daily cumulative UV radiation estimates that were calculated using an all-sky estimation model combined with a hybrid model. The reconstructed daily UV radiation data span from 1961 to 2014. The mean absolute bias error and root-mean-square error are smaller than 30% at most stations, and most of the mean bias error values are negative, which indicates underestimation of the UV radiation intensity. These datasets can improve our basic knowledge of the spatial and temporal variations in UV radiation. Additionally, these datasets can be used in studies of potential ozone formation and atmospheric oxidation, as well as simulations of ecological processes.Hui LIU Bo HU Yuesi WANG Guangren LIU Liqin TANG Dongsheng JI Yongfei BAI Weikai BAO Xin CHEN Yunming CHEN Weixin DING Xiaozeng HAN Fei HE Hui HUANG Zhenying HUANG Xinrong LI Yan LI Wenzhao LIU Luxiang LIN Zhu OUYANG Boqiang QIN Weijun SHEN Yanjun SHEN Hongxin SU Changchun SONG Bo SUN Song SUN Anzhi WANG Genxu WANG Huimin WANG Silong WANG Youshao WANG Wenxue WEI Ping XIE Zongqiang XIE Xiaoyuan YAN Fanjiang ZENG Fawei ZHANG Yangjian ZHANG Yiping ZHANG Chengyi ZHAO Wenzhi ZHAO Xueyong ZHAO Guoyi ZHOU Bo ZHU 2017Advances in Atmospheric Sciences2017,34,7:2
12Prevalence and risk factors for depression in older people in Xi'an China:a community-based study显示文摘Yunming L Changsheng C Haibo T 2012Int J Geriatr Psychiatry2012,27,:1
13Study on the demulsification of the oil-in-water emulsion from the column top of a delayed coking unit 显示文摘Xinru Xu Guiling Liu Yunming Yang 2004Petroleum Science and Technology2004,22,34:1
14Application of a non-coaxial soil model in shallow foundations显示文摘Yunming Yang Haisui Yu 0,,:1
15Unknown Chinese word extraction based on variety of overlapping strings显示文摘YE Yunming WU Qingyao LI Yan 2013Information Processing and Management2013,49,2:1
16Notice of retraction numerical calculation of maneuvering hydrody- namic forces of drift ship based on SST k - w turbulence model 显示文摘QIU Yunming LIU Zuyuan CHEN Xide 2010Computer Engineering and Technology (IC- CET)2010,5,4:1
17Stratified Sampling For Feature SubSpace Selection In Random Forests For High Dimen- sional data显示文摘Yunming Ye Qingyao Wu Joshua Zhexue Huang 2013Pattern Recognition2013,46,3:1
18A chemical damage model of sandstone in acid solution 显示文摘Li Ning Zhu Yunming Su Bo 2003Int J Rock Mech Min Sci2003,40,2:1
19Prevalence and risk factors for depression in older People in Xi' an China : a community -based study 显示文摘Yunming L Changsheng C Haibo T 2012International Journal of Geriatric Psychiatry2012,27,1:1
20显示文摘Yuan Ying Zhang Peiyun Yang Yunming 2004Biomaterials2004,25,18:1
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