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基于Sentinel-2卫星影像的滨海筏式养殖区提取研究

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首都师范大学学报（自然科学版） 2024年第5期45卷 11-18页

作者：武义洲胡德勇首都师范大学资源环境与旅游学院北京100048 首都师范大学三维信息获取与应用教育部重点实验室北京100048

我国滨海养殖在全球占有较大比例,快速获取滨海养殖区域大小和分布等信息,有利于实现对养殖区域的监测规划、产量估算和灾害预防。针对筏式养殖区提取过程中出现的与海水区分较困难、识别精度低和“椒盐”噪声等问题,本文将以长山群岛... 详细信息

我国滨海养殖在全球占有较大比例,快速获取滨海养殖区域大小和分布等信息,有利于实现对养殖区域的监测规划、产量估算和灾害预防。针对筏式养殖区提取过程中出现的与海水区分较困难、识别精度低和“椒盐”噪声等问题,本文将以长山群岛附近筏式养殖区为研究区域,利用哨兵二号(Sentinel-2)卫星遥感影像数据构建光谱、纹理和几何等特征,通过特征域优化(FSO)获得提取筏式养殖区的优选特征,结合面向对象的随机森林、决策树和最近邻3种算法对研究区筏式养殖区进行提取,在分析和对比提取结果基础上,总结了最优分类算法,并验证了FSO分类的可靠性。结果表明:(1)归一化差分水体指数、几何特征边界和形状、灰度共生矩阵相关性是识别筏式养殖区的最优指标;(2)FSO分类保证了提取精度,减少了数据冗余、提高了运算效率,对筏式养殖的提取具有较高可靠性和适用性;(3)基于FSO和面向对象随机森林的分类方法综合评价最优,总体分类精度为88.8%,κ=0.801,该方法有效避免“椒盐”噪声的产生,可以高效精确的提取筏式养殖区专题信息。本研究可为筏式养殖的动态监测、产量估算等方面提供了技术和专题数据支持。

关键词： Sentinel-2 筏式养殖区面向对象特征域优化

全龄友好型城镇社区规划策略——以温州市龙湾区为例

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规划师 2024年第8期40卷 114-120页

作者：张雍雍金建伟傅哲宁詹敏吴一洲浙江省城乡规划设计研究院规划一分院杭州市规划设计研究院浙江省城乡规划设计研究院浙江工业大学研究生院

城镇社区是城市建设治理的基本单元,承载着居民大部分的日常生活,是居民提升生活品质、共建美好生活的核心载体。立足于当前全龄友好型社区规划实践,分析城镇社区全龄人群的构成,提出包括全龄友好的顶层谋划、代际需求的精准画像、空间... 详细信息

城镇社区是城市建设治理的基本单元,承载着居民大部分的日常生活,是居民提升生活品质、共建美好生活的核心载体。立足于当前全龄友好型社区规划实践,分析城镇社区全龄人群的构成,提出包括全龄友好的顶层谋划、代际需求的精准画像、空间场景的灵活匹配、互利互助的协同治理等方面的全龄友好型社区规划建设实施策略。以温州市龙湾区为例,从顶层谋划、代际需求、空间匹配、协同治理4个维度提出面向全龄友好的城镇社区规划建设策略,探索中国式现代化的城镇社区规划实施途径。

关键词：全龄友好代际需求空间匹配城镇社区温州市龙湾区

Insulation characteristics of triple mixtures of c-C_4F_8/N_2/CO_2 under lightning impulse voltage

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Plasma Science and Technology 2018年第10期20卷 112-117页

作者： Zhouming ZHANG Zhaorui NI Dengming XIAO yizhou wu Department of Electrical Engineering Shanghai Jiao Tong University Shanghai 200030 People's Republic of China Michigan-Shanghai Jiaotong University Joint Institute Shanghai Jiao Tong University Shanghai 200240 People's Republic of China

This paper has researched the insulation characteristics of 10% c-C4F8/N2/CO2 mixtures under lightning impulse voltage by experiment. It is shown that the positive and negative lightning impulse breakdown voltages of 10%c-C4F8/N2/CO2 gas mixtures rise linearly as the electrode gap distance and gas pressure increase and under the same conditions, the positive lightning impulse breakdown voltage of the gas mixtures is always higher than the negative lightning impulse breakdown voltage. As the gas mixtures have a little higher liquefied temperature than SF6 and the comprehensive GWP is about 5% of SF6, and the positive and negative lightning impulse breakdown voltages can both reach 60% of SF6, 10%c-C4F8/N2/CO2 gas mixtures can be applied as insulation gas in electrical equipment such as C-GIS, GIT, GIL and so on.

关键词： SF6 alternative insulation characteristics lightning impulse voltage c-C4F8 gas mixtures

炎症指标与病灶位置对再发性缺血性脑卒中中医辨证分型的影响研究

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深圳中西医结合杂志 2024年第13期34卷 6-9页

作者：崔凌辉吴逸舟李浩华陈健王雷上海建工医院上海200083

目的:探讨再发性缺血性脑卒中(RIS)患者的中医辨证分型与炎症指标、头颅磁共振成像(MRI)检查结果的关系。方法:收集上海建工医院2021年5月至2023年5月收治的120例RIS患者进行中医辨证分型和MRI检查,采集患者的临床指标、炎症指标和人口... 详细信息

目的:探讨再发性缺血性脑卒中(RIS)患者的中医辨证分型与炎症指标、头颅磁共振成像(MRI)检查结果的关系。方法:收集上海建工医院2021年5月至2023年5月收治的120例RIS患者进行中医辨证分型和MRI检查,采集患者的临床指标、炎症指标和人口学资料等信息,比较不同中医证型患者的炎症指标、头颅MRI病灶分布部位的差异,分析不同患者在性别、年龄、体质量指数(BMI)、烟酒史、糖尿病、高血压、高脂血症和炎症指标水平等方面的差异,探讨这些因素与中医证候类型的关系。结果:风痰瘀阻证型患者病灶多分布于基底节和丘脑(P<0.05);肝阳上亢证型则多见于脑干(P<0.05);阴虚风动证型病灶在脑叶和基底节较明显(P<0.05);痰热腑实证型病灶以丘脑为主(P<0.05);而气虚血瘀证型患者脑叶病灶占比最多(P<0.05)。此外,风痰瘀阻、肝阳上亢和痰热腑实证型患者炎症指标血清淀粉样蛋白A(SAA)、白细胞介素–6(IL–6)和C反应蛋白(CRP)水平显著上升,其中痰热腑实证型最为明显,而阴虚风动和气虚血瘀证型炎症指标水平较低。logistic回归分析显示,性别、BMI、吸烟史和高脂血症病史是中医证型的影响因素,炎症指标也均是中医证型的影响因素。结论:RIS患者头颅MRI、炎症指标与中医辨证分型存在一定联系,头颅MRI影像学检查可以作为中医证型的辨证参考,炎症指标可以作为辨证分型实证类型的客观辅助指标。

关键词：再发性缺血性脑卒中中医辨证分型炎症指标磁共振成像

Designing metal sulfide-based cathodes and separators for suppressing polysulfide shuttling in lithium-sulfur batteries

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Nano Research 2024年第4期17卷 2574-2591页

作者： Guoyin Zhu Qingzhu wu Xianghua Zhang Yuwen Bao Xuan Zhang Zhuoyao Shi yizhou Zhang Lianbo Ma Institute of Advanced Materials and Flexible Electronics(IAMFE) School of Chemistry and Materials ScienceNanjing University of Information Science&TechnologyNanjing 210044China School of Materials Science and Engineering Anhui University of TechnologyMaanshan 243002China School of Mechanical Engineering Jiangsu University of TechnologyChangzhou 213001China

Lithium-sulfur(Li-S)batteries,known for their high energy density,are attracting extensive research interest as a promising next-generation energy storage ***,their widespread use has been hampered by certain issues,including the dissolution and migration of polysulfides,along with sluggish redox *** sulfides present a promising solution to these obstacles regarding their high electrical conductivity,strong chemical adsorption with polysulfides,and remarkable electrocatalytic capabilities for polysulfide *** this review,the recent progress on the utilization of metal sulfide for suppressing polysulfide shuttling in Li-S batteries is systematically summarized,with a special focus on sulfur hosts and functional *** critical roles of metal sulfides in realizing high-performing Li-S batteries have been comprehensively discussed by correlating the materials’structure and electrochemical ***,the remaining issues/challenges and future perspectives are *** offering a detailed understanding of the crucial roles of metal sulfides,this review dedicates to contributing valuable knowledge for the pursuit of high-efficiency Li-S batteries based on metal sulfides.

关键词： lithium-sulfur batteries metal sulfides polysulfide shuttling sulfur hosts separator coating layers

Trajectory of COVID-19 response and management strategy in China:scientific rationale driven strategy adjustments

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Frontiers of Medicine 2024年第1期18卷 19-30页

作者： Zeyu Zhang Yue Yan Lina Zhao yizhou Bian Ning Zhao You wu Dahai Zhao Zongjiu Zhang Institute for Hospital Management Tsinghua UniversityBeijing100084China School of Medicine Tsinghua UniversityBeijing100084China School of International and Public Affairs Shanghai Jiao Tong UniversityShanghai200030China Yale University-Shanghai Jiao Tong University Joint Center for Health Policy Shanghai Jiao Tong UniversityShanghai200030China

The pneumonia caused by novel coronavirus SARS-CoV-2 infection in early December 2019,which was later named coronavirus disease 2019(COVID-19)by the World Health Organization(WHO),rapidly spread across the *** has made extraordinary efforts to this unprecedented pandemic,put its response and control at a very high level of infectious disease management(Category B but with measures for Category A),given top priority to the people and their lives,and balanced the pandemic control and socio-economic *** more than three years’fighting against this disease,China downgraded the management of COVID-19 to Category B infectious disease on January 8,2023 and the WHO declared the end of public health emergency on May 5,***,the ending of pandemic does not mean that the disease is no longer a health *** against COVID-19 from China and the whole world should be learned to prepare well for the future public health *** article gives a systematic review of the trajectory of COVID-19 development in China,summarizes the critical policy arrangements and provides evidence for the adjustment during policy making process,so as to share experiences with international community and contribute to the global health for all humanity.

关键词： COVID-19 public health response and control strategy science-based policy making

Enhancing the electrochemical performance of Na metal anodes via local eutectic melting in porous Al-Cu alloy hosts

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Nano Research 2024年第7期17卷 6111-6118页

作者： Tao Hu Qiang wu Cheng Wang Jialu Chen Fu Su Zibo Chen yizhou Wang Jianyu Chen Yanwen Ma Jin Zhao State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Nanjing University of Posts&Telecommunications9 Wenyuan RoadNanjing 210023China Materials Science and Engineering King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia Suzhou Vocational Institute of Industrial Technology 1 Zhineng AvenueSuzhou International Education ParkSuzhou 215104China

Sodium(Na)metal batteries(SMBs)have emerged as promising alternatives to lithium metal batteries for large-scale energy storage applications,owing to their cost-effectiveness,abundance,and favorable redox ***,the practical implementation of SMBs faces several challenges associated with the Na metal anode,including the formation of dendrites,low Coulombic efficiency,and capacity ***,we propose a novel approach to enhance the electrochemical performance of Na metal anodes through a porous Al-Cu alloy host(PAC)fabricated by a local eutectic melting *** local eutectic melting facilitates the development of a conductive network,offering mechanical support,and the porous structure provides abundant channels for the diffusion of Na ions and accommodates volume fluctuations in the Na metal during charge–discharge ***,the PAC exhibits a high average Coulombic efficiency of 99.8%at 1 mA·cm^(−2)for 1 mAh·cm^(−2)and a low voltage polarization of 19 mV during 500 *** study provides valuable insight into the design and fabrication of highperformance Na metal anodes,which hold significant promise for the advancements of next-generation energy storage systems.

关键词： Na metal anode porous Al-Cu alloy porous current collector local eutectic melting

Intensifying Electron Utilization by Surface-Anchored Rh Complex for Enhanced Nicotinamide Cofactor Regeneration and Photoenzymatic CO_(2)Reduction

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Research 2021年第1期2021卷 507-517页

作者： Yuqing Cheng Jiafu Shi yizhou wu Xueying Wang Yiying Sun Ziyi Cai Yu Chen Zhongyi Jiang Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin University92 Weijin RoadNankai DistrictTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) 92 Weijin RoadNankai DistrictTianjin 300072China School of Environmental Science&Engineering Tianjin University92 Weijin RoadNankai DistrictTianjin 300072China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 10090China

Solar-driven photocatalytic regeneration of cofactors,including reduced nicotinamide adenine dinucleotide(NADH),reduced nicotinamide adenine dinucleotide phosphate(NADPH),and reduced flavin adenine dinucleotide(FADH_(2)),could ensure the sustainable energy supply of enzymatic reactions catalyzed by oxidoreductases for the efficient synthesis of ***,the elevation of cofactor regeneration efficiency is severely hindered by the inefficient utilization of electrons transferred on the surface of *** by the phenomenon of ferredoxin-NADP+reductase(FNR)anchoring on thylakoid membrane,herein,a homogeneous catalyst of rhodium(Rh)complex,[Cp_(∗)Rh(bpy)H_(2)O]^(2+),was anchored on polymeric carbon nitride(PCN)mediated by a tannic acid/polyethyleneimine(TA/PEI)adhesive layer,acquiring PCN@TA/PEI-Rh core@shell *** by visible light,electrons were excited from the PCN core,then transferred through the TA/PEI shell,and finally captured by the surface-anchored Rh for instant utilization during the regeneration of *** TA/PEI-Rh shell could facilitate the electron transfer from the PCN core and,more importantly,achieved~1.3-fold elevation of electron utilization efficiency compared with ***,the PCN@TA/PEI-Rh afforded the NADH regeneration efficiency of 37.8%after 20 min reaction under LED light(405 nm)illumination,over 1.5 times higher than PCN with free *** of the NADH regeneration system with formate dehydrogenase achieved continuous production of formate from carbon dioxide(CO_(2)).Our study may provide a generic and effective strategy to elevate the catalytic efficiency of a photocatalyst through intensifying the electron utilization.

关键词： enzymatic dinucleotide catalyst

Overexpression of tonoplast Ca^(2+)-ATPase in guard cells synergistically enhances stomatal opening and drought tolerance

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Journal of Integrative Plant Biology 2024年第8期66卷 1587-1602页

作者： Jinghan Su Bingqing He Peiyuan Li Baiyang Yu Qiwen Cen Lingfeng Xia Yi Jing Feibo wu Rucha Karnik Dawei Xue Michael R.Blatt yizhou Wang Institute of Crop Science Zhejiang UniversityHangzhou 310058China Laboratory of Plant Physiology and Biophysics University of GlasgowGlasgow G128QQUK BGI Research Sanya 572025China College of Life and Environmental Sciences Hangzhou Normal UniversityHangzhou 311121China Zhejiang Provincial Key Laboratory of Crop Germplasm Zhejiang UniversityHangzhou 310058China

Stomata play a crucial role in plants by controlling water status and responding to drought ***,simultaneously improving stomatal opening and drought tolerance has proven to be a significant *** address this issue,we employed the OnGuard quantitative model,which accurately represents the mechanics and coordination of ion transporters in guard *** the guidance of OnGuard,we successfully engineered plants that overexpressed the main tonoplast Ca^(2+)-ATPase gene,ACA11,which promotes stomatal opening and enhances plant ***,these transgenic plants also exhibited improved drought tolerance due to reduced water loss through their ***,OnGuard assisted us in understanding the mechanism behind the unexpected stomatal behaviors observed in the ACA11 overexpressing *** study revealed that the overexpression of ACA11 facilitated the accumulation of Ca^(2+)in the vacuole,thereby influencing Ca^(2+)storage and leading to an enhanced Ca^(2+)elevation in response to abscisic *** regulatory cascade finely tunes stomatal responses,ultimately leading to enhanced drought *** findings underscore the importance of tonoplast Ca^(2+)-ATPase in manipulating stomatal behavior and improving drought ***,these results highlight the diverse functions of tonoplast-localized ACA11 in response to different conditions,emphasizing its potential for future applications in plant enhancement.

关键词： ACA11 drought guard cells modeling stomata