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Advances in Atmospheric Sciences 2021年第5期38卷 737-754页

作者： guifu zhang Jidong GAO Muyun DU School of Meteorology University of OklahomaNormanOK 73072USA National Severe Storms Laboratory/NOAA NormanOK 73072USA Institute of Heavy Rain CMAWuhan 430205China

Many weather radar networks in the world have now provided polarimetric radar data(PRD)that have the potential to improve our understanding of cloud and precipitation microphysics,and numerical weather prediction(NWP).To realize this potential,an accurate and efficient set of polarimetric observation operators are needed to simulate and assimilate the PRD with an NWP model for an accurate analysis of the model state *** this purpose,a set of parameterized observation operators are developed to simulate and assimilate polarimetric radar data from NWP model-predicted hydrometeor mixing ratios and number concentrations of rain,snow,hail,and *** polarimetric radar variables are calculated based on the T-matrix calculation of wave scattering and integrations of the scattering weighted by the particle size *** calculated polarimetric variables are then fitted to simple functions of water content and volumeweighted mean diameter of the hydrometeor particle size *** parameterized PRD operators are applied to an ideal case and a real case predicted by the Weather Research and Forecasting(WRF)model to have simulated PRD,which are compared with existing operators and real observations to show their validity and *** new PRD operators use less than one percent of the computing time of the old operators to complete the same simulations,making it efficient in PRD simulation and assimilation usage.

关键词： forward operators polarimetric radar data data assimilation numerical weather prediction

Seasonal Variations of Observed Raindrop Size Distribution in East China

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Advances in Atmospheric Sciences 2019年第4期36卷 346-362页

作者： Long WEN Kun ZHAO Mengyao WANG guifu zhang Key Laboratory of Mesoscale Severe Weather of Ministry of Education and School of Atmospheric Sciences Nanjing University State Key Laboratory of Severe Weather and Joint Center for Atmospheric Radar Research of China Meteorological Administration and Nanjing University Chinese Academy of Meteorological Sciences Xichang Satellite Launch Center School of Meteorology and Center for Analysis and Prediction of Storms University of Oklahoma

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.

关键词： raindrop size distribution precipitation microphysics disdrometer seasonal variation East China

Deformation process of a shocked drop-in-liquid

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Science China(Physics,Mechanics & Astronomy) 2018年第10期61卷 92-95页

作者： Bin Liao guifu zhang YuJian Zhu ZhuFei Li ErQiang Li JiMing Yang Department of Modern Mechanics University of Science and Technology of China College of Architecture and Civil Engineering Anhui Polytechnic University

A mixed flow of two immiscible liquids may form drops of one liquid in the other. Deformation and breakup of drops occur when there is sufficient hydrodynamic or surface forces from the ambient liquid; such deformation and breakup of drops is a common phenomenon in various engineering applications, such as oil-water flow in the petroleum recovery industry [1, 2], stirred dispersions in the chemical industry [3,4], and melted metal and cooling liquid interactions in the nuclear industry [5, 6]. A typical simplified model for the mechanism study is the behaviours of a single drop against its surrounding liquid.

关键词：化学工业混合流动水动力学相互作用液体表面力水流动

Insight into structure evolution of carbon nitrides and its energy conversion as luminescence

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Carbon Energy 2024年第2期6卷 37-60页

作者： Hao zhang Jingwei zhang Wenjie Chen Minjia Tao Xianguang Meng Yuanjian zhang guifu Zuo Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials College of Materials Science and EngineeringNorth China University of Science and TechnologyTangshanHebeiChina College of Clinical Medicine North China University of Science and TechnologyTangshanHebeiChina Hebei Iron and Steel Laboratory TangshanHebeiChina Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical ResearchState Key Laboratory of BioelectronicsSchool of Chemistry and Chemical EngineeringMedical SchoolSoutheast UniversityNanjingJiangsuChina

A series of carbon nitride(CN)materials represented by graphitic carbon nitride(g-C_(3)N_(4))have been widely used in bioimaging,biosensing,and other fields in recent years due to their nontoxicity,low cost,and high luminescent quantum *** is more attractive is that the luminescent properties such as wavelength and intensity can be regulated by controlling the structure at the molecular ***,it is time to summarize the related research on CN structural evolution and make a prospect on future *** this review,we first summarize the research history and multiple structural evolution of ***,the progress of improving the luminescence performance of CN through structural evolution was ***,the relationship between CN structure evolution and energy conversion in the forms of photoluminescence,chemiluminescence,and electrochemiluminescence was ***,key challenges and opportunities such as nanoscale dispersion strategy,luminous efficiency improving methods,standardization evaluation,and macroscopic preparation of CN are highlighted.

关键词： carbon nitride chemiluminescence electrochemiluminescence energy conversion photoluminescence structural evolution

水热处理对热浸镀铝/微弧氧化陶瓷膜层的耐蚀性能研究

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当代化工研究 2024年第10期 1-4页

作者：苏晓慧胡平张桂福彭小飞王书亮四川省工业环境监测研究院四川610000 西南石油大学新能源与材料学院四川610500

本文探究了水热处理对热浸镀铝/MAO陶瓷膜层表面形貌、物相组成、耐蚀性能等方面的影响,并通过高温铝液腐蚀实验分析了热浸镀铝/MAO/水热处理试样的耐铝液腐蚀能力。结果表明:热浸镀铝/MAO/水热处理试样的陶瓷膜层主要由Al相、Al2O3相和... 详细信息

本文探究了水热处理对热浸镀铝/MAO陶瓷膜层表面形貌、物相组成、耐蚀性能等方面的影响,并通过高温铝液腐蚀实验分析了热浸镀铝/MAO/水热处理试样的耐铝液腐蚀能力。结果表明:热浸镀铝/MAO/水热处理试样的陶瓷膜层主要由Al相、Al2O3相和ZrO2相组成,适宜的水热处理时间能够使得陶瓷膜层表面更加平整光滑,微孔数量减少,耐蚀性能更好。通过高温铝液腐蚀实验发现,经热浸镀铝/MAO/水热处理工艺改性后的316 L不锈钢试样表面更加平整,腐蚀失重和腐蚀速率仅为未镀膜的316 L不锈钢试样的一半。

关键词：水热处理陶瓷膜层耐蚀性能

Effects of Plastic Film Mulching on Quality and Appearance of Statuma Mandarin Fruit

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American Journal of Plant Sciences 2014年第26期5卷 3829-3835页

作者： guifu zhang Shenxi Xie Horticulture & Landscape College Hunan Agricultural University Changsha China Nuclear Technology and Chemical & Biological College Hubei University of Science and Engineering Xianning China

Six-year Statuma mandarin (Citrus unshiu Marc. Cv. Miyagawa Wase) trees were used as materials to investigate the effects of plastic film mulching on quality and appearance of Statuma mandarin fruit during three periods of cell division, cell enlargement and mature stages. The results showed that mulching during the cell division and early-mature stages increased total sugar and reduced sugar content of fruit as well as the Vc content, compared to the control. However, the titratable acid content, fruit size, peel weight and single fruit weight were all lower than the control. Film mulching during the cell division phage resulted in higher edible fruit rate, while the fruit shape index was similar to the control. Mulching during the early-mature stage didn’t affect the edible rate of fruit, but caused lower fruit shape index. Compared to the control, film mulching during the cell enlargement period caused lower total and reducing sugar content, titratable acid content and edible rate, while the Vc content was a little bit higher than the control. In addition, the fruit size, peel weight, single fruit weight and fruit shape index were all lower than the control. Mulching during the early-mature period effectively enhanced the content of total and reduced sugar and Vc and decreased the titratable acid content. Hence, it increased fruit quality but had negative effect on fruit appearance.

关键词： Statuma Mandarin Film Mulching Fruit Quality Fruit Appearance

Influence of Water Stress on the Citric Acid Metabolism Related Gene Expression in the Ponkan Fruits

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Agricultural Sciences 2014年第14期5卷 1513-1521页

作者： guifu zhang Shenxi Xie Horticulture & Landscape College Hunan Agricultural University Hunan China Nuclear Technology and Chemical & Biological College Hubei University of Science and Engineering Hubei China

To explore the influence of water stress on fruit quality and gene expression related to citrate metabolism of ponkan. The test were conducted from May 15 to December 24 in 2013 using six-year-old ponkan (C. blanco cv. Ponkan) trees with 40% soil water conditions by taken regular watering as control. The content of acids in fruit were determined by HPLC, and relative expression of related genes of citric acid metabolic were determined by relative fluorescence quantitative PCR. The results showed that the content of citric acid, malic acid, quinic acid and total organic acids per gram sarcocarp were extremely increased by 285.2%, 320%, 480% and 299.1%, and the content of per-fruit organic acid were 77.39%, 89.64%, 117.24% and 75.9% respectively compared to those control in the fruit mature stage. Relative expression of CitCS1, CitCS2 were higher than control, and relative expression of CitAco1, CitAco2, CitAco3 had a certain increase in the late fruit development, were lower in mature stage. Three relative expression of CitIDH gene were higher than control in mature stage. Low CitGAD4 relative expression and undetectable in mature stage, the relative expression of CitGAD5 gene had a role in promoting under water stress. Furthermore, the relative expression of CitCS1, CitCS2, CitACO1, CitACO3, CitIDH1, CitIDH2, CitIDH3, CitGAD4 and CitGAD5 were influenced by water stress through the correlation analysis. Water stress caused the accumulation of citric acid, declined fruit quality, leaded to change of the genetic rela- tive expression about citric acid synthesis and degradation. The down-regulation of CitACO1, CitGAD4 and up-regulation of CitCS1, CitCS2 might be one of the reasons that promoted to the accumulation of citric acid.

关键词： Ponkan Water Stress Fruit Quality Citric Acid Gene Expression

经皮肾镜取石术下腔静脉损伤致术中大出血1例

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临床泌尿外科杂志 2024年第5期39卷 463-466页

作者：杨龙雨禾刘虎赵星何王跃强张贵福马真云南省滇南中心医院(红河州第一人民医院)泌尿外科云南蒙自661100 云南省元阳县人民医院普外科

经皮肾镜取石术(percutaneous nephrolithotripsy,PCNL)是治疗肾结石的常用方法,术中出血是其最常见的并发症之一。本文报道了1例PCNL中发生下腔静脉损伤导致术中大出血的患者,患者出现血流动力学不稳定,因此立即进行剖腹探查手术。在... 详细信息

经皮肾镜取石术(percutaneous nephrolithotripsy,PCNL)是治疗肾结石的常用方法,术中出血是其最常见的并发症之一。本文报道了1例PCNL中发生下腔静脉损伤导致术中大出血的患者,患者出现血流动力学不稳定,因此立即进行剖腹探查手术。在探查过程中发现下腔静脉和肾血管受损,尝试修补下腔静脉,但仍有大量出血。考虑到肾血管损伤无法修复,最终决定行肾切除术。通过对相关文献的综述,发现误入下腔静脉是PCNL术中的罕见并发症。术中的穿刺点选择、导丝操作和扩张深度等因素可能增加了发生下腔静脉损伤的风险。通过总结这一病例和相关文献,可以提高医生对该并发症的认识和警惕性,从而减少类似并发症的发生。

关键词：经皮肾镜取石术罕见并发症下腔静脉大出血肾脏切除

Recent Progress in Dual-Polarization Radar Research and Applications in China

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Advances in Atmospheric Sciences 2019年第9期36卷 961-974页

作者： 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 Key Laboratory of Mesoscale Severe Weather of Ministry of Education and School of Atmospheric Sciences Nanjing University163 Xianlin RoadNanjing 210023China State Key Laboratory of Severe Weather and Joint Center for Atmospheric Radar Research of China Meteorological Administration and Nanjing University Chinese Academy of Meteorological SciencesBeijing 100081China National Center for Atmospheric Research BoulderColorado 80301USA School of Meteorology and Advanced Radar Research Center University of OklahomaNormanOklahoma 73019USA School of Atmospheric Sciences and Guangdong Province Key Laboratory for Climate Change and Natural Disaster StudiesSun Yat-sen UniversityGuangzhou 510006China

Dual-polarization(dual-pol)radar can measure additional parameters that provide more microphysical information of precipitation systems than those provided by conventional Doppler *** 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 ***,the characteristics of several representative dual-pol radars are *** 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 *** dual-pol radar measurements,the microphysical characteristics derived from raindrop size distribution retrieval,hydrometeor classification,and QPE is better understood in *** 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 *** 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.

关键词： dual-polarization radar quantitative precipitation estimation precipitation microphysics drop size distribution numerical model

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输尿管狭窄修复与重建的研究进展

临床泌尿外科杂志 2024年第8期39卷 743-747页

作者：杨龙雨禾杨剑兵招云亮卫娜王跃强张贵福白蕾(审校) 云南省滇南中心医院(红河州第一人民医院)泌尿外科云南蒙自661199

输尿管狭窄是泌尿外科的一类梗阻性疾病,针对此类疾病虽有多种修复术式可供选择,但手术技术复杂,具体情况下不同术式之间有差异,本文主要针对现阶段修复与重建技术在输尿管狭窄治疗中的应用、相关进展进行综述。

关键词：输尿管狭窄修复重建自体组织