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Improved Diurnal Cycle of Precipitation on Land in a Global Non-Hydrostatic Model Using a Revised NSAS Deep Convective Scheme

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Advances in Atmospheric Sciences 2024年第6期41卷 1217-1234页

作者： yifan ZHAO Xindong PENG Xiaohan LI Siyuan chen State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China University of Chinese Academy of Sciences Beijing 100049China CMA Earth System modeling and Prediction Centre Beijing 100081China 2035 Future Laboratory PIESAT Information Technology Co Ltd.Beijing 100195China

In relatively coarse-resolution atmospheric models,cumulus parameterization helps account for the effect of subgridscale convection,which produces supplemental rainfall to the grid-scale precipitation and impacts the diurnal cycle of *** this study,the diurnal cycle of precipitation was studied using the new simplified Arakawa-Schubert scheme in a global non-hydrostatic atmospheric model,i.e.,the Yin-Yang-grid Unified Model for the *** new diagnostic closures and a convective trigger function were suggested to emphasize the job of the cloud work function corresponding to the free tropospheric large-scale *** results of the 0.25-degree model in 3-month batched real-case simulations revealed an improvement in the diurnal precipitation variation by using a revised trigger function with an enhanced dynamical constraint on the convective initiation and a suitable threshold of the *** reducing the occurrence of convection during peak solar radiation hours,the revised scheme was shown to be effective in delaying the appearance of early-afternoon rainfall peaks over most land areas and accentuating the nocturnal peaks that were wrongly concealed by the more substantial afternoon *** addition,the revised scheme enhanced the simulation capability of the precipitation probability density function,such as increasing the extremely low-and high-intensity precipitation events and decreasing small and moderate rainfall events,which contributed to the reduction of precipitation bias over mid-latitude and tropical land areas.

关键词： cumulus parameterization diurnal cycle of precipitation large-scale dynamic forcing global non-hydrostatic atmospheric model performance verification

High-resolution tsunami hazard assessment for the Guangdong-Hong Kong-Macao Greater Bay Area based on a non-hydrostatic tsunami model

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Science China Earth Sciences 2024年第7期67卷 2326-2351页

作者： yifan ZHU Chao AN Houyun YU Wei ZHANG Xiaofei chen Key Laboratory of Hydrodynamics(Ministry of Education) School of Ocean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China Department of Earth and Space Sciences Southern University of Science and Technology Shenzhen 518055China

The Guangdong-Hong Kong-Macao Greater Bay Area(GBA)is threatened by potential tsunami hazards from the Littoral Fault Zone(LFZ)and the Manila subduction zone(MSZ),and may suffer huge damage because of its dense population,concentrated infrastructure,and low-lying *** tsunami studies for the GBA made simple assumptions on the mechanisms of LFZ earthquakes,and used coarse bathymetry data in tsunami simulation,which limited the prediction of detailed tsunami hazard *** this paper,we develop a parallel dispersive tsunami model PCOMCOT to efficiently simulate dispersive,nonlinear,and breaking tsunami *** also construct large-scale and high-resolution bathymetry models for the GBA by correcting and integrating various data *** rupture simulation is performed for the LFZ to obtain a more reliable earthquake source *** propose several representative earthquake scenarios for the LFZ and MSZ,and use PCOMCOT to calculate the resulting tsunami waves,currents,and inundation in the *** results indicate that if an M_(w)7.5 oblique-slip earthquake occurs in the LFZ off the Pearl River Estuary(PRE),the subsequent tsunami will primarily impact Hong Kong,causing maximum positive and negative waves of around 1 m and -2 m,respectively,along with slightly destructive currents(≥1.5 m/s).An M_(w)9.0 MSZ megathrust earthquake can lead to widespread inundation with>1 m depth on the outlying islands of Macao and in the urban areas of Hong Kong around the Victoria ***,it will also cause catastrophic tsunami currents along the narrow waterways in Hong Kong and Macao,and the spatial distribution of strong currents(≥3 m/s)shows a considerable discrepancy from the areas of serious ***,more attention should be paid to the potential impacts of tsunami currents on the GBA.

关键词： Tsunami hazards Inundation Tsunami currents Non-hydrostatic model Guangdong-Hong Kong-Macao Greater Bay Area

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基于UHPLC-Q-Exactive Orbitrap MS技术的退黄合剂化学成分快速表征

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广东药科大学学报 2024年第3期40卷 54-62页

作者：陈桃灵孟祥乐邹宇凤王嘉怡陈逸凡李辉河南省夏邑县中心医院河南商丘476400 河南中医药大学第一附属医院河南郑州450000 湖南医药学院药学院湖南怀化418000

目的建立一种高效快速的超高效液相色谱串联四极杆轨道阱质谱(UHPLC-Q-Exactive Orbitrap MS)法,对退黄合剂的化学成分进行表征。方法采用Waters ACQUITY UPLC BEH C_(18)色谱柱(100 mm×2.1 mm,1.7μm),以流动相0.1%甲酸水溶液(A)-乙腈... 详细信息

目的建立一种高效快速的超高效液相色谱串联四极杆轨道阱质谱(UHPLC-Q-Exactive Orbitrap MS)法,对退黄合剂的化学成分进行表征。方法采用Waters ACQUITY UPLC BEH C_(18)色谱柱(100 mm×2.1 mm,1.7μm),以流动相0.1%甲酸水溶液(A)-乙腈(B)进行梯度洗脱,流速为0.3 mL/min,进样量为2μL,柱温为40°C。质谱采用电喷雾离子源(ESI)负离子模式,质谱扫描范围为m/z 100~1500。结果通过对照品、数据库及参考文献共鉴定出退黄合剂中77种化学成分,其中包括黄酮类30种、多酚类18种、有机酸10种、萜类9种、蒽醌类9种、其他类1种。结论所建立的方法可高效、快速地鉴定退黄合剂的化学成分。

关键词：退黄合剂 UHPLC-Q-Exactive Orbitrap MS 化学成分快速表征

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应用型本科人才培养“产教协同、理实融通、专创融合”模式的探索与实践——以水利类专业为例

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大学教育 2024年第11期 129-132页

作者：陈斌徐存东黄赛花周建芬段永刚陈一帆浙江水利水电学院浙江杭州310018

新工科背景下的应用型本科人才培养以校企合作为纽带,全方位实施产教协同,开展专业课程改革,构建实践育人校企合作机制。通过创新实践教学方式方法,人才培养方案增设课内“非实验实践性教学”和“工程训练”等环节,全面推行毕业设计“... 详细信息

新工科背景下的应用型本科人才培养以校企合作为纽带,全方位实施产教协同,开展专业课程改革,构建实践育人校企合作机制。通过创新实践教学方式方法,人才培养方案增设课内“非实验实践性教学”和“工程训练”等环节,全面推行毕业设计“真题真做”、校企“双导师制”,建立完整的实践教学体系。将实践教学和创新创业教育融为一体,促使产教协同“提质增效”,在理实融通的教学过程中提高学生的学习效果,在专业教育与创新创业教育融合中激发学生的创新活力,实现应用型人才的高质量培养。

关键词：新工科水利专业应用型人才培养理实融通专创融合

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Perovskite bridging PbS quantum dot/polymer interface enables efficient solar cells

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Nano Research 2022年第7期15卷 6121-6127页

作者： Xing Meng yifan chen Fan Yang Jieqi Zhang Guozheng Shi Yannan Zhang Haodong Tang Wei chen Yang Liu Lin Yuan Shaojuan Li Kai Wang Qi chen Zeke Liu Wanli Ma Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123China State Key Laboratory of Applied Optics Changchun Institute of Optics Fine Mechanics and PhysicsChangchun 130033China i-Lab CAS Center for Excellence in NanoscienceSuzhou Institute of Nano-Tech and Nano-BionicsSuzhou 215123China Department of Electrical and Electronic Engineering Southern University of Science and TechnologyShenzhen 518055China

Conjugated polymers have been explored as promising hole-transporting layer(HTL)in lead sulfide(PbS)quantum dot(QD)solar *** fine regulation of the inorganic/organic interface is pivotal to realize high device *** this work,we propose using CsPbI_(3) QDs as the interfacial layer between PbS QD active layer and organic polymer *** relative soft perovskite can mediate the interface and form favorable energy level alignment,improving charge extraction and reducing interfacial charge *** a result,the photovoltaic performance can be efficiently improved from 10.50%to 12.32%.This work may provide new guidelines to the device structural design of QD optoelectronics by integrating different solutionprocessed semiconductors.

关键词： lead sulfide quantum dot solar cells perovskite energy level alignment

1998—2021年上海市闵行区麻疹流行与时空分布特征

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中国初级卫生保健 2024年第4期38卷 59-62页

作者：陈一凡王颖张莉萍范佳磊陈泓泓杜艳复旦大学公共卫生学院上海200032 上海市闵行区疾病预防控制中心上海201101

目的:分析上海市闵行区麻疹流行与时空分布特征,为相关部门制定麻疹防控措施提供参考依据。方法:收集1998—2021年上海市闵行区麻疹发病数据,采用全局空间自相关和局部空间自相关分析判断空间差异类型;采用SaTScan 10.1软件探测麻疹发... 详细信息

目的:分析上海市闵行区麻疹流行与时空分布特征,为相关部门制定麻疹防控措施提供参考依据。方法:收集1998—2021年上海市闵行区麻疹发病数据,采用全局空间自相关和局部空间自相关分析判断空间差异类型;采用SaTScan 10.1软件探测麻疹发病时空聚集的区域。结果:1998—2021年上海市闵行区麻疹年均发病率为5.05/10万,呈明显下降趋势。全局空间自相关分析结果显示,没有明显空间相关性;局部空间自相关分析结果显示,户籍人口及非户籍人口分别在2014—2021年梅陇镇地区出现高—高聚集区,1998—2005年华漕镇地区户籍人口和2014—2021年的非户籍人口均出现高—低离散区。时空扫描发现3个高发时空聚集区,其中户籍人口时空聚集区2处,分别发生在2005年的5个街(镇)为一类聚集区,2005—2008年的4个街(镇)为二类聚集区;非户籍人口出现1处时空聚集区,为1998—2009年的6个街(镇)。结论:1998—2021年上海市闵行区麻疹发病存在时空聚集性,相关部门应加强华漕镇、莘庄镇、颛桥镇、梅陇镇的麻疹防控工作。

关键词：麻疹时空自相关分布

乡村振兴背景下农业院校学生思想政治教育协同育人模式研究

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农业技术与装备 2024年第7期 115-117页

作者：石雷邵宝健赵娜陈一凡师春祥陈辉河北农业大学动物科技学院河北保定071001

乡村振兴关键在于产业振兴,农业产业发展需要一大批知农爱农的新型高素质人才,而推进农业院校思想政治教育协同育人模式,则是有效培养新型高素质人才的关键措施。基于此,深入探讨了乡村振兴背景下农业院校学生思想政治教育协同育人模式。

关键词：乡村振兴农业院校思政教育育人模式

Dynamically Securing the Data by^(1)O_(2)Sensitization of Fluorescent Composites with a High Latency and Uncrackable Features

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Chinese Journal of Chemistry 2024年第14期42卷 1651-1658页

作者： Yuanyuan chen Jiamao chen Huacan Wu yifan Liu Donghui Wang Weiguo Huang College of Chemistry and Materials Science Fujian Normal UniversityFuzhouFujian350002 China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of Sciences155 Yangqiao West RoadFuzhouFujian350002 China University of Chinese Academy of Sciences 19A Yuquan RoadBeijing100049 China

Dynamic fluorescent materials play a crucial role in secure inks for data encryption;however,they are still plagued by issues such as photodegradation,poor latency,and susceptibility to unauthorized ***,we propose a photochemically modulated dynamic fluorescent encryption system based on^(1)O_(2)sensitization of fluorescent composites,comprising a^(1)O_(2)-sensitive fluorophore(F2)and non-emissive *** UV irradiation,in-situ generated^(1)O_(2)from the polymer effectively binds with F2 to form endoperoxides(F2EPO),resulting in a significant redshift in emission,up to 150 ***^(1)O_(2)concentration is closely related to the irradiation time,rendering different fluorescent colors in a time-gated ***,the emission of F2EPO can be regulated by polymer chemical structure,molecular weight,and crosslinking *** on these merits,we develop a dynamic data encryption method with various non-emissive polymers as the data storage media,UV light irradiation as the data encoder,and F2 as the data *** light irradiation of diverse polymer solutions generates^(1)O_(2)at different concentrations,effectively encoding the data,which remains invisible under both UV and natural *** addition of F2 to these irradiated polymer solutions produces different redshifted fluorescence,enabling secure data *** to the non-emissive nature of the polymers,time-gated readout fashion,excellent latency of^(1)O_(2),and subtle interactions between^(1)O_(2)and F2,this data encryption is nearly *** work offers an advantage data encryption approach beyond the reach of conventional fluorophores.

关键词： Dynamic fluorescent materials Photochemically modulation ^(1)O_(2)-sensitive fluorophore High latency Data encryption Fluorescence Photochemistry Singlet oxygen

Insight into demand-driven preparation of single-atomic mediators for lithium–sulfur batteries

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Journal of Energy Chemistry 2024年第3期90卷 205-219,I0007页

作者： Miaoyu Lu yifan Ding Zaikun Xue Ziang chen Yuhan Zou Jingyu Sun College of Energy Soochow Institute for Energy and Materials InnovationsKey Laboratory for Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhou 215006JiangsuChina Beijing Graphene Institute Beijing 100095China

Lithium-sulfur(Li-S) batteries have attracted considerable attention as one of the most appealing energy storage *** efforts have been devoted to tackling the tremendous challenges,mainly pertaining to the severe shuttle effect,sluggish redox kinetics and lithium dendritic ***-atomic mediators as promising candidates exhibit impressive performance in addressing these intractable *** research often utilizes a trial-and-error approach,proposing solutions to fabricate single-atomic materials with diversified ***,comprehensive review articles especially targeting demand-driven preparation are still in a nascent *** by these considerations,this review summarizes the design of single-atomic mediators based on the application case-studies in LiS batteries and other metal-sulfur *** preparation routes represented by chemical vapor deposition technology are introduced in a demand-oriented ***,future research directions are proposed to foster the advancement of single-atomic mediators in Li-S realm.

关键词： Single-atom catalyst Lithium–sulfur battery Chemical vapor deposition Demand-driven preparation