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9篇 您的检索式:作者名="Sun Tingwei"
    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
2High-performance quasi-2D perovskite light-emitting diodes: from materials to devices显示文摘Quasi-two-dimensional(quasi-2D)perovskites have attracted extraordinary attention due to their superior semiconducting properties and have emerged as one of the most promising materials for next-generation lightemitting diodes(LEDs).The outstanding optical properties originate from their structural characteristics.In particular,the inherent quantum-well structure endows them with a large exciton binding energy due to the strong dielectricand quantum-confinement effects;the corresponding energy transfer among different n-value species thus results in high photoluminescence quantum yields(PLQYs),particularly at low excitation intensities.The review herein presents an overview of the inherent properties of quasi-2D perovskite materials,the corresponding energy transfer and spectral tunability methodologies for thin films,as well as their application in high-performance LEDs.We then summarize the challenges and potential research directions towards developing high-performance and stable quasi-2D PeLEDs.The review thus provides a systematic and timely summary for the community to deepen the understanding of quasi-2D perovskite materials and resulting LED devices.Li Zhang Changjiu Sun Tingwei He Yuanzhi Jiang Junli Wei Yanmin Huang Mingjian Yuan 2021Light(Science & Applications)2021,10,4:5
3A new merged dataset of global ocean chlorophyll a concentration with higher spatial and temporal coverage显示文摘Understanding the ocean's role in the global carbon cycle and its response to environmental change requires a high spatio-temporal resolution of observation.Merging ocean color data from multiple sources is an effective way to alleviate the limitation of individual ocean color sensors(e.g.,swath width and gaps,cloudy or rainy weather,and sun glint) and to improve the temporal and spatial coverage.Since the missions of Sea-Viewing Wide Field-of-View Sensor(Sea Wi FS) and Medium-spectral Resolution Imaging Spectrometer(MERIS) ended on December 11,2010 and May 9,2012,respectively,the number of available ocean color sensors has declined,reducing the benefits of the merged ocean color data with respect to the spatial and temporal coverage.In present work,Medium Resolution Spectral Imager(MERSI)/FY-3 of China is added in merged processing and a new dataset of global ocean chlorophyll a(Chl a) concentration(2000–2015) is generated from the remote sensing reflectance(Rrs(λ)) observations of MERIS,Moderate-resolution imaging spectra-radiometer(MODIS)-AQUA,Visible infrared Imaging Radiometer(VIIRS) and MERSI.These data resources are first merged into unified remote sensing reflectance data,and then Chl a concentration data are inversed using the combined Chl a algorithm of color index-based algorithm(CIA) and OC3.The merged data products show major improvements in spatial and temporal coverage from the addition of MERSI.The average daily coverage of merged products is approximately 24% of the global ocean and increases by approximately 9% when MERSI data are added in the merging process.Sampling frequency(temporal coverage) is greatly improved by combining MERSI data,with the median sampling frequency increasing from 15.6%(57 d/a) to 29.9%(109 d/a).The merged Chl a products herein were validated by in situ measurements and comparing them with the merged products using the same approach except for omitting MERSI and Glob Colour and MEa SUREs merged data.Correlation and relative error between the new merged Chl a products and in situ observation are stable relative to the results of the merged products without the addition of MERSI.Time series of the Chl a concentration anomalies are similar to the merged products without adding MERSI and single sensors.The new merged products agree within approximately 10% of the merged Chl a product from Glob Colour and MEa SUREs.XIAO Yanfang ZHANG Jie CUI Tingwei SUN Ling 2018Acta Oceanologica Sinica2018,37,7:2
4Second-trimester maternal β-human chorionic gonadotropin level associated with subsequent development of pregnancy-induced hypertension显示文摘Objective:To determine whether maternal β-human chorionic gonadotropin(β-hCG) level in second-trimester may be associated with subsequent development of pregnancy-induced hypertension(PIH).Methods:Seven hundred and sixty-two women in mid-trimester were to have maternal urine β-hCG standardized concentrations and maternal serum β-hCG measurements.Their case histories were recorded and reviewed from mid-trimester to delivery.The relation was observed between maternal urine,serum markers and subsequent development of PIH.Results:Among 762 women,504 cases were normal pregnancies,42 cases had PIH,94 cases had premature rupture of membrane (PROM),69 cases had preterm delivery (PD),53 other cases were excluded by various reasons.The levels of maternal urine,serum β-hCG in PIH were (61.75±9.78) IU/L and (304.56±54.17) ng/mg respectively,which were higher significantly than normal pregnancy group ([20.65±7.61] IU/L and [146.34±47.81] ng/mg,P<0.05).When maternal serum,urine β-hCG levels ≥2 MOM(multiple of mean),the incidences of developing PIH were increased significantly as compared with those of β-hCG <2 MOM women.The incidence of PIH increased from 5.1% in pregnancies with urine β-hCG ≥2 MOM to 11.7% in cases with urine β-hCG ≥4 MOM.Conclusion:The elevation of maternal mid-trimester urine,serum β-hCG levels is not only an early signal for dysfunction of placenta but also a dangerous signal for development of PIH.Second-trimester maternal urine β-hCG measurement proves to be superior to serum marker in clinical prediction.Tang Longying Chen Qizhen Zuo Wanxin Sun Tingwei Wang Yianshu Jin Hua 2010Journal of Medical Colleges of PLA(China)2010,25,5:2
5Highly sensitive tuning of lattice thermal conductivity of graphenelike borophene by fluorination and chlorination显示文摘Boron-based 2D materials are of current interest.However,graphene-like geometry is unstable for B due to the electron deficiency,which can be stabilized by introducing H,F and Cl.Here,using density functional theory combined with phonon Boltzmann transport equation,we perform systematic studies on how the functionalization changes the lattice thermal conductivity(LTC).We find that when going from hydrogenation to fluorination and chlorination,the LTC along zigzag direction changes from 367.6 to 211.3 and 43.0 W/(rrvK),while the corresponding values in armchair direction are 279.6,198.9,and 41.6 W/(m·K),respectively.These huge differences imply the sensitivity of LTC to functionalization,which can be attributed to the enhanced anharmonicity as revealed by analyzing group velocity,Gruneisen parameter,anharmonic scattering rates,and three-phonon scattering space.Tingwei Li Ge Nie Qiang Sun 2020Nano Research2020,13,4:1
6Bilateral inferior petrosal sinus sampling for the treatment of Cushing's disease Data from 52 cases from one institute over an eight-year period显示文摘The present study analyzed data from 108 Cushing's disease patients,who underwent trans-sphenoidal surgery in one hospital between January 2003 and April 2010,to investigate the performance value of bilateral inferior petrosal sinus sampling (BIPSS).Of the 108 patients,52 underwent BIPSS prior to surgery and 56 did not.Results showed that BIPSS accuracy for the diagnosis of Cushing's disease was 86.5% (45/52),and accuracy for adenoma lateralization during surgery was 76.9% (40/52).In addition,early remission rate was significantly greater compared to patients without BIPSS.Results demonstrated that BIPSS facilitated localization and diagnosis of Cushing's disease and helped to predict adenoma lateralization.Changyan Fan Xiuhua Shi Qingfang Sun Liuguan Bian Weiguo Zhao Jiankang Shen Hua Zhang Tingwei Su Weiqing Wang Xiaoying Li Guang Ning Liang Kong Lingling Hu 2011Neural Regeneration Research2011,6,28:1
7Satellite monitoring of massive green macroalgae bloom (GMB): imaging ability comparison of multi-source data and drifting velocity estimation显示文摘Cui Tingwei Zhang Jie Sun Li'e 2012International Journal of Remote Sensing2012,33,17:1
8Satellite macroalgae bloom multi-source data and drifting velocity estimation显示文摘Cui Tingwei Zhang Jie Sun monitoring of massive green imaging ability comparison of Lie 2012International Journal ofRemote Sensing2012,33,17:1
9Research on the Effectiveness of KMV Model in China's Bond Credit Rating Market显示文摘In recent years,China's bond market has experienced rapid development,but the pace of credit risk supervision has not kept up.Since 2014,the number of domestic credit bond defaults has increased.In 2016,there were 79 domestic default bonds,with a default amount of up to 40.3 billion Yuan.From the perspective of domestic bond market credit risk supervision and early warning mechanism,rating is not objective,and tracking is not timely also rating methods are backward.Therefore,with the development of big data and other technologies,it is urgent to study credit risk supervision methods suitable for the domestic bond market.On the basis of combing the development of domestic bond market and analyzing the current situation of domestic credit rating,this paper combines the results of theoretical research at home and abroad,the information available in the domestic market,big data mining and automation technology,based on the financial and stock exchange information of listed companies,combined with BS option pricing theory,constructs KMV model.Jifeng Sun Tingwei Sun 2020Journal of Finance Research2020,4,1:0
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