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36篇 您的检索式:作者名="GuiFu Zhang"
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1Seasonal Variations of Observed Raindrop Size Distribution in East China显示文摘Seasonal variations of rainfall microphysics in East China are investigated using data from the observations of a twodimensional video disdrometer and a vertically pointing micro rain radar. The precipitation and rain drop size distribution(DSD) characteristics are revealed for different rain types and seasons. Summer rainfall is dominated by convective rain,while during the other seasons the contribution of stratiform rain to rainfall amount is equal to or even larger than that of convective rain. The mean mass-weighted diameter versus the generalized intercept parameter pairs of convective rain are plotted roughly around the 'maritime' cluster, indicating a maritime nature of convective precipitation throughout the year in East China. The localized rainfall estimators, i.e., rainfall kinetic energy–rain rate, shape–slope, and radar reflectivity–rain rate relations are further derived. DSD variability is believed to be a major source of diversity of the aforementioned derived estimators. These newly derived relations would certainly improve the accuracy of rainfall kinetic energy estimation, DSD retrieval, and quantitative precipitation estimation in this specific region.Long WEN Kun ZHAO Mengyao WANG Guifu ZHANG 2019Advances in Atmospheric Sciences2019,36,4:14
2Deficient plastidic fatty acid synthesis triggers cell death by modulating mitochondrial reactive oxygen species显示文摘Jian Wu Yuefeng Sun Yannan Zhao Jian Zhang Lilan Luo Meng Li Jinlong Wang Hong Yu Guifu Liu Liusha Yang Guosheng Xiong Jian-Min Zhou Jianru Zuo Yonghong Wang Jiayang Li 2015Cell Research2015,25,5:13
3Recent Progress in Dual-Polarization Radar Research and Applications in China显示文摘Dual-polarization(dual-pol)radar can measure additional parameters that provide more microphysical information of precipitation systems than those provided by conventional Doppler radar.The dual-pol parameters have been successfully utilized to investigate precipitation microphysics and improve radar quantitative precipitation estimation(QPE).The recent progress in dual-pol radar research and applications in China is summarized in four aspects.Firstly,the characteristics of several representative dual-pol radars are reviewed.Various approaches have been developed for radar data quality control,including calibration,attenuation correction,calculation of specific differential phase shift,and identification and removal of non-meteorological echoes.Using dual-pol radar measurements,the microphysical characteristics derived from raindrop size distribution retrieval,hydrometeor classification,and QPE is better understood in China.The limited number of studies in China that have sought to use dual-pol radar data to validate the microphysical parameterization and initialization of numerical models and assimilate dual-pol data into numerical models are summarized.The challenges of applying dual-pol data in numerical models and emerging technologies that may make significant impacts on the field of radar meteorology are discussed.Kun ZHAO Hao HUANG Mingjun WANG Wen-Chau LEE Gang CHEN Long WEN Jing WEN Guifu ZHANG Ming XUE Zhengwei YANG Liping LIU Chong WU Zhiqun HU Sheng CHEN 2019Advances in Atmospheric Sciences2019,36,9:12
4Current Status and Future Challenges of Weather Radar Polarimetry: Bridging the Gap between Radar Meteorology/Hydrology/Engineering and Numerical Weather Prediction显示文摘After decades of research and development, the WSR-88 D(NEXRAD) network in the United States was upgraded with dual-polarization capability, providing polarimetric radar data(PRD) that have the potential to improve weather observations,quantification, forecasting, and warnings. The weather radar networks in China and other countries are also being upgraded with dual-polarization capability. Now, with radar polarimetry technology having matured, and PRD available both nationally and globally, it is important to understand the current status and future challenges and opportunities. The potential impact of PRD has been limited by their oftentimes subjective and empirical use. More importantly, the community has not begun to regularly derive from PRD the state parameters, such as water mixing ratios and number concentrations, used in numerical weather prediction(NWP) models.In this review, we summarize the current status of weather radar polarimetry, discuss the issues and limitations of PRD usage, and explore potential approaches to more efficiently use PRD for quantitative precipitation estimation and forecasting based on statistical retrieval with physical constraints where prior information is used and observation error is included. This approach aligns the observation-based retrievals favored by the radar meteorology community with the model-based analysis of the NWP community. We also examine the challenges and opportunities of polarimetric phased array radar research and development for future weather observation.Guifu ZHANG Vivek N.MAHALE Bryan J.PUTNAM Youcun QI Qing CAO ANDrew D.BYRD Petar BUKOVCIC Dusan S.ZRNIC Jidong GAO Ming XUE Youngsun JUNG Heather D.REEVES Pamela L.HEINSELMAN AlexANDer RYZHKOV Robert D.PALMER Pengfei ZHANG Mark WEBER Greg M.MCFARQUHAR Berrien MOORE III Yan ZHANG Jian ZHANG J.VIVEKANANDAN Yasser AL-RASHID Richard L.ICE Daniel S.BERKOWITZ Chong-chi TONG Caleb FULTON Richard J.DOVIAK 2019Advances in Atmospheric Sciences2019,36,6:9
5Studies of biouptake and transformation of mercury by a typical unicellular diatom Phaeodactylum tricornutum显示文摘Mercury(Hg) is a toxic heavy metal with its biogeochemical cycling in the ocean depending on the type and behavior of the oceanic microalgae.The present work aimed to evaluate bioaccumulation and transformation of Hg by Phaeodactylum tricornutum,a typical unicellular diatom,when exposed to the extremely high level of Hg in order to understand the possible mechanisms of acute stress response.P.tricornutum can accumulate Hg(its bioaccumulation factor is at 104 level),and the 96 h EC 50 was estimated to be 145μg L-1.The amounts of surface-bound Hg being about 1.2 to 4.8 times higher than those of intracellular Hg under exposure to HgCl 2(from 20 to 120μg L-1 concentrations) suggested that the cell wall of P.tricornutum is an important 'fence' towards Hg.After entering the P.tricornutum cell,Hg underwent transformation in its chemical form via interactions with high molecular weight sulfur-containing proteins(accounting for 68% of the intracellular Hg),and glutathione as well as the induced phytochelatins(PCs)(24% Hg) which alleviated the toxicity of HgCl2.In addition,the existence of organic ligands greatly influenced the uptake and transformation behavior of P.tricornutum towards HgCl2,especially in the case of cysteine(Cys),which increased the uptake of Hg,but alleviated the toxicity of Hg towards P.tricornutum due to the fact that Cys is an important precursor for the synthesis of PCs inside the cell.The uptake process of Hg by P.tricornutum was in agreement with the Freundlich isotherm,suggesting a typical heterogeneous sorption process.More importantly,we observed the conversion of HgCl2 into methylmercury inside the P.tricornutum cells and its release into the culture solution using HPLC/CVG-AFS and GC-MS,although the mechanism needs to be further investigated.DENG GuiFu ZHANG TianWen YANG LiMin WANG QiuQuan 2013Chinese Science Bulletin2013,58,2:7
6From Green Super Rice to green agriculture:Reaping the promise of functional genomics research显示文摘Producing sufficient food with finite resources to feed the growing global population while having a smaller impact on the environment has always been a great challenge.Here,we review the concept and practices of Green Super Rice(GSR)that have led to a paradigm shift in goals for crop genetic improvement and models of food production for promoting sustainable agriculture.The momentous achievements and global deliveries of GSR have been fueled by the integration of abundant genetic resources,functional gene discoveries,and innovative breeding techniques with precise gene and whole-genome selection and efficient agronomic management to promote resource-saving,environmentally friendly crop production systems.We also provide perspectives on new horizons in genomic breeding technologies geared toward delivering green and nutritious crop varieties to further enhance the development of green agricul-ture and better nourish the world population.Sibin Yu Jauhar Ali Shaochuan Zhou Guangjun Ren Huaan Xie Jianlong Xu Xinqiao Yu Fasong Zhou Shaobing Peng Liangyong Ma Dingyang Yuan Zefu Li Dazhou Chen Ruifeng Zheng Zhigang Zhao Chengcai Chu Aiqing You Yu Wei Susong Zhu Qiongyao Gu Guangcun He Shigui Li Guifu Liu Changhua Liu Chaopu Zhang Jinghua Xiao Lijun Luo Zhikang Li Qifa Zhang 2022Molecular Plant2022,15,1:6
7Natural variations in grain length 10(GL10)regulate rice grain size显示文摘Grain size is an important determinant of grain weight and yield in rice.Although several genes related to grain size have been identified,natural variations in these genes that affect grain size are poorly characterized.Here,we describe the grain length QTL GL10,encoding MADS56,which positively regulates grain length and grain weight.A natural allelic variation of NIL-gl10,containing an~1.0-kb deletion in the first exon that abolishes its transcription,results in shorter grain length,lower grain weight and delayed flowering in gl10 plants.The knockout of GL10 in the HJX74 background leads to grain phenotypes similar to that of NIL-gl10,while overexpression of GL10 results in increased grain length and weight and earlier heading date.GL10 regulates grain length by promoting greater longitudinal cell growth in the grain glume.Additionally,GL10 participates in the regulation of gibberellic acid(GA)signaling pathway genes in young panicle tissues.Analysis of GL10 haplotypes shows obvious divergence between the japonica and indica lineages.Our findings reveal an allelic variation of GL10 that may explain differences in grain length among modern cultivars and could be used to breed rice varieties with optimized grain shape.Penglin Zhan Shuaipeng Ma Zhili Xiao Fangping Li Xin Wei Shaojun Lin Xiaoling Wang Zhe Ji Yu Fu Jiahao Pan Mi Zhou Yue Liu Zengyuan Chang Lu Li Suhong Bu Zupei Liu Haitao Zhu Guifu Liu Guiquan Zhang Shaokui Wang 2022Journal of Genetics and Genomics2022,49,5:3
8Animal exercise studies in cardiovascular research:Current knowledge and optimal design--A position paper of the Committee on Cardiac Rehabilitation,Chinese Medical Doctors’Association显示文摘Growing evidence has demonstrated exercise as an effective way to promote cardiovascular health and protect against cardiovascular diseases However,the underlying mechanisms of the beneficial effects of exercise have yet to be elucidated.Animal exercise studies are widely used to investigate the key mechanisms of exercise-induced cardiovascular protection.However,standardized procedures and well-established evaluation indicators for animal exercise models are needed to guide researchers in carrying out effective,high-quality animal studies using exercise to prevent and treat cardiovascular diseases.In our review,we present the commonly used animal exercise models in cardiovascular research and propose a set of standard procedures for exercise training,emphasizing the appropriate measurements and analysis in these chronic exercise models.We also provide recommendations for optimal design of animal exercise studies in cardiovascular research,including the choice of exercise models,control of exercise protocols,exercise at different stages of disease,and other considerations,such as age,sex,and genetic background.We hope that this position paper will promote basic research on exercise-induced cardiovascular protection and pave the way for successful translation of exercise studies from bench to bedside in the prevention and treatment of cardiovascular diseases.Yihua Bei Lei Wang Rongjing Ding Lin Che Zhiqing Fan Wei Gao Qi Liang Shenghui Lin Suixin Liu Xiao Lu Yuqin Shen Guifu Wu Jian Yang Guolin Zhang Wei Zhao Lan Guo Junjie Xiao 2021Journal of Sport and Health Science2021,10,6:2
9显示文摘Jiang Changlong Zhang Wangqun Zou Guifu 2005J Phys Chem B2005,109,:1
10Fine Mapping of QTLs for Stigma Exsertion Rate from Oryza glaberrima by Chromosome Segment Substitution显示文摘Stigma exsertion is an important trait for outcrossing ability in rice.Stigma exsertion rate(SER)of male sterile lines(MSLs)is a key factor affecting F1-seed production in hybrid rice.In this study,seven QTLs for SER were detected on five chromosomes using a set of single-segment substitution lines(SSSLs)derived from O.glaberrima.Three of the QTLs were mapped in the estimated intervals of 92.5–333.0 kb.qSER-5 was located in a substitution segment of 92.5 kb.qS ER-1 b and qS ER-8 b were respectively limited to 333.0 kb and 107.5 kb by secondary substitution mapping.qSER-1 b and qSER-3 had bigger additive effects of 11.5%and 11.9%,respectively,while the other five QTLs had smaller additive effects from 5.7%to 8.6%.Open reading frames were identified in the regions of qS ER-5 and qSER-8 b in O.sativa and O.glaberrima genomes.Fine mapping of the QTLs laid a foundation for the cloning of genes,and QTLs for SER will be used to develop MSLs with strong ability of outcrossing.TAN Quanya ZHU Haitao LIU Hui NI Yuerong WU Shengze LUAN Xin LIU Junwei YANG Weifeng YANG Zifeng ZENG Ruizhen LIU Guifu WANG Shaokui ZHANG Guiquan 2022Rice science2022,29,1:1
11Preparing of a high speed bistable electromagnetic RF MEMS switch显示文摘Yong-hua Zhang Guifu Ding Xiaofeng Shun Donghua Gu Bingchu Cai Zongsheng Lai 2006Sensors & Actuators: A. Physical2006,,2:1
12Fundamentals of Engineering Thermodynamics 显示文摘Zhang Xuexue Li Guifu 2000Beijing: Higher Education Press2000,,:1
13Bias in differential reflectivity due to cross coupling through the radiation patterns of polarimetric weather radars 显示文摘Zrnic D S Doviak R J Zhang Guifu 2010Journal of Atmospheric and Oceanic Technology2010,27,10:1
14Experiments in Rainfall Estimation with a Polari- metric Radar in a Subtropical Environment显示文摘BRANDES E A ZHANG Guifu VIVEKANANDAN J 2002Journal of Applied Meteorology2002,41,6:1
15Preparing of a high speed bistable electromagnetic RF MEMS switch显示文摘Zhang Yonghua Ding Guifu Shun Xiaofeng 2007Sensors and Actuators A2007,134,2:1
16Synthesis and in vitro PDT activity of miscellaneous porphyrins with amino acid and uracil显示文摘Shi Weimin Zhang Ge Dai Guifu 2008Bioorganic & Medicinal Chemistry2008,16,:1
17GL9 from Oryza glumaepatula controls grain size and chalkiness in rice显示文摘Grain size is a key factor influencing grain yield and appearance quality in rice.We identified twelve quantitative trait loci(QTL)for grain length(GL),nine for grain width(GW),and nine for 1000-kernel weight(TKW)using GLU-SSSLs,which are single-segment substitution lines with Oryza glumaepatula as donor parent and Huajingxian 74(HJX74)as recipient parent.Among the QTL,qGL1-2,qGL1-4,qGL9-2,qGW2-2,qGW9-1 and qTKW9-2 contributed to high grain yield.GL9 was identified as a candidate gene for qGL9-2 by map-based cloning and sequencing,and is a novel allele of GS9.The kernel of NIL-gl9was slenderer and longer than that of HJX74,and the TKW and grain yield per plant of NIL-gl9 were higher than those of HJX74.The proportion of grain chalkiness of NIL-gl9 was much lower than that of HJX74.Thus,gl9 increased grain yield and appearance quality simultaneously.Three pyramid lines,NIL-gs3/gl9,NIL-GW7/gl9 and NIL-gw8/gl9,were developed and the kernel of each was longer than that of the corresponding recipient parent lines.The gl9 allele may be beneficial for breeding rice varieties with high grain yield and good appearance quality.Shaojun Lin Zupei Liu Kui Zhang Weifeng Yang Penglin Zhan Quanya Tan Yajun Gou Shuaipeng Ma Xin Luan Chubing Huang Zhili Xiao Yuanyuan Liu Bihuang Zhu Ruiqing Liang Wenqi Zhou Haitao Zhu Suhong Bu Guifu Liu Guiquan Zhang Shaokui Wang 2023The Crop Journal2023,11,1:1
18Dynamic expression of nine QTLs for tiller number detected with single segment substitution lines in rice显示文摘Guifu Liu Ruizhen Zeng Haitao Zhu Zemin Zhang Xiaohua Ding Fangming Zhao Wentao Li Guiquan Zhang 2009Theoretical and Applied Genetics2009,,3:1
19Preparing of a high speed bistable electromagnetic RF MEMS switch显示文摘Yong-hua Zhang Guifu Ding Xiaofeng Shun 2006Sensor and Actuator2006,,6:1
20Experiments in rainfall estimation with a polarimetric radar in a subtropical environ- ment显示文摘BRANDES A E Guifu Zhang VIVEKANANDAN J 2002Joumal of Applied Meteorology2002,41,6:1
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