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基于超分子衍生类多孔有机聚合物的样品前处理方法研究进展

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色谱 2024年第6期42卷 496-507页

作者：康晶燕师彦平中国科学院兰州化学物理研究所中国科学院西北特色植物资源化学重点实验室甘肃兰州730000

多孔有机聚合物是一类由有机构筑单元通过共价键连接构成的多孔材料,因具有高比表面积、可调节孔径、高度可设计性和易修饰性等特点,在样品前处理领域表现出巨大的应用潜力。设计新型功能性的构筑单元是实现目前多孔有机聚合物材料创新... 详细信息

多孔有机聚合物是一类由有机构筑单元通过共价键连接构成的多孔材料,因具有高比表面积、可调节孔径、高度可设计性和易修饰性等特点,在样品前处理领域表现出巨大的应用潜力。设计新型功能性的构筑单元是实现目前多孔有机聚合物材料创新发展的重要因素,也是实现复杂基质中目标分子高效、高选择性分离富集的核心与关键。近年来,超分子衍生类化合物凭借其良好的主客体识别化学性质、简便易行的功能化策略以及可调节的拓扑构型,为多孔有机聚合物材料的构筑提供了新的启示和突破。本文重点归纳了不同结构类型的超分子衍生类多孔有机聚合物构筑策略,并聚焦于食品分析和环境监测,简要综述了超分子衍生类多孔有机聚合物在样品前处理领域的最新研究进展,并对该领域的发展方向进行了展望。

关键词：多孔有机聚合物样品前处理超分子衍生物食品分析环境监测综述

Selective extinction and habitat nestedness are the main drivers of lizard nestedness in the Zhoushan Archipelago

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Current Zoology 2024年第2期70卷 244-252页

作者： Minchu Zhang Chaonan Tang Qing Zhang Chengxiu Zhan Chuanwu Chen yanping Wang Laboratory of Island Biogeography and Conservation Biology College of Life SciencesNanjing Normal UniversityNanjing 210023China

Nested subset pattern(nestedness)is an important part of the theoretical framework of island biogeography and community ***,most previous studies often used nestedness metrics or randomization algorithms that are vulnerable to type I *** this study,we inves-tigated the nestedness of lizard assemblages on 37 islands in the Zhoushan Archipelago,*** used the line-transect method to survey species occurrence,abundance,and habitat types of lizards on 37 islands during 2 breeding seasons in 2021 and *** applied the nested metric WNODF and the conservative rc null model to control for type I error and quantify the significance of *** rank cor relations were used to evaluate the role of 4 habitat variables(island area,2 isolation indices,and habitat diversity)and 4 ecological traits(body size,geographic range size,clutch size,and minimum area requirement)in generating *** results of WNODF analyses showed that lizard assemblages were significantly *** habitat-by-site matrix estimated by the program NODF was also significantly nested,support-ing the habitat nestedness *** nestedness of lizard assemblages were significantly correlated with island area,habitat *** size,and minimum area ***,our results suggest that selective extinction and habitat nestedness were the main drivers of lizard nestedness in our *** contrast,the nestedness of lizard assemblages was not due to passive sampling or selective *** maximize the number of species preserved,our results indicate that we should protect both large islands with diverse habitats and species with largearea requirement and clutch size.

关键词： clutch size habitat nestedness lizards minimum area requirement nestedness selective extinction WNODF Zhoushan Archipelago.

Photo-responsive functional materials based on light-driven molecular motors

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Light(Science & Applications) 2024年第3期13卷 407-420页

作者： yanping Deng Guiying Long Yang Zhang Wei Zhao Guofu Zhou Ben L.Feringa Jiawen Chen SCNU-UG International Joint Laboratory of Molecular Science and Displays National Center for International Research on Green OptoelectronicsSouth China Normal UniversityGuangzhou 510006China Stratingh Institute for Chemistry University of GroningenNijenborgh 49747AG GroningenThe Netherlands

In the past two decades,the research and development of light-triggered molecular machines have mainly focused on developing molecular devices at the nanoscale.A key scientific issue in the field is how to amplify the controlled motion of molecules at the nanoscale along multiple length scales,such as the mesoscopic or the macroscopic scale,or in a more practical perspective,how to convert molecular motion into changes of properties of a macroscopic ***-driven molecular motors are able to perform repetitive unidirectional rotation upon irradiation,which offers unique opportunities for responsive macroscopic *** several reviews that focus on the design,synthesis and operation of the motors at the nanoscale,photo-responsive macroscopic materials based on light-driven molecular motors have not been comprehensively *** the present review,we first discuss the strategy of confining absolute molecular rotation into relative rotation by grafting motors on ***,examples of self-assemble motors in supramolecular polymers with high internal order are ***,we will focus on building of motors in a covalently linked system such as polymeric gels and polymeric liquid crystals to generate complex responsive ***,a perspective toward future developments and opportunities is *** review helps us getting a more and more clear picture and understanding on how complex movement can be programmed in light-responsive systems and how man-made adaptive materials can be invented,which can serve as an important guideline for further design of complex and advanced responsive materials.

关键词： functions materials material

Bird specimen number linked with species trait and climate niche breadth

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Avian Research 2024年第1期15卷 108-115页

作者： Xiaoyu Duan Xiongwei Huang Jingya Zhang Shuo Lv Gang Song yanping Wang Gang Feng Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau&Inner Mongolia Key Laboratory of Grassland Ecology School of Ecology and EnvironmentInner Mongolia UniversityHohhot010020China Key Laboratory of Marine Biotechnology of Fujian Province Institute of OceanologyCollege of Marine SciencesFujian Agriculture and Forestry UniversityFuzhou350002China Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijing100101China Laboratory of Island Biogeography and Conservation Biology College of Life SciencesNanjing Normal UniversityNanjing210023China

Biological specimens are fundamental for taxonomy and flora/fauna *** importantly,they also play crucial roles in recording environmental impacts on morphology and behavior,which is vital for biodiversity research and ***,there are few systematic studies on the patterns and drivers of bird specimen number at regional *** study is the first attempt to examine the relationships between bird specimen number and species traits as well as climate niche breadth in China,aiming to answer two questions:1)how do species’temperature niche breadth and precipitation niche breadth influence specimen number?2)which trait is most associated with bird specimen number?The associations between bird specimen number and explanatory variables were examined using ordinary least squares,generalized linear models,phylogenetic generalized linear mixed models,and multiple *** results showed that Muscicapidae was the family with the highest specimen number,and Passeriformes was the order with the highest specimen *** specimen number significantly increased with larger temperature niche breadth and precipitation niche *** number was also positively associated with geographic range size,habitat specificity,hunting vulnerability and clutch size,but negatively associated with body *** findings suggest that future bird specimen collection should pay more attention to birds with limited ecological niches,large body sizes,and small clutch *** research enhances the use of bird specimen data to study and preserve biodiversity.

关键词： Biodiversity conservation Biological specimens Bird traits Scientific collection Specimen number Temperature and precipitation

Copper-catalyzed C(sp)-H aryl amination enables modular synthesis of quinolines and 2-quinolinones

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Science China Chemistry 2024年第2期67卷 595-603页

作者： Yang Gao Haixia Li Simin Yang yanping Huo Qian Chen Xianwei Li Zhe Wang Xiao-Qiang Hu School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou510006China Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory Jieyang515200China Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education&Hubei Key Laboratory of Catalysis and Materials Science School of Chemistry and Materials ScienceSouth-Central University for NationalitiesWuhan430074China

Herein,we disclose a novel copper-catalyzed C(sp)-H aryl amination of terminal alkynes with anthranils,enabling the rapid generation of highly reactive secondary N-aryl ynamines for the modular synthesis of structurally diverse C2-substituted quinolines and *** in-situ formed carbonyl-ynamines are prone to tautomerize to carbonyl-ketenimines,which can efficiently react with a series of nucleophiles,including amines,alcohols,phenols,thiols,thiophenols,active-methylene compounds,and even water to produce various quinoline derivatives with the generation of H_(2)O as a sole and green *** method also unlocks a practical route to create various quinoline-fused heterocycles and can be successfully applied to the late-stage modification of complex molecules and the concise synthesis of bioactive *** studies reveal a coppercatalyzed inner-sphere nitrene transfer process by using anthranils as novel aryl nitrene precursors.

关键词： copper catalysis anthranils C(sp)-H aryl amination carbonyl-ketenimines quinolines

Differences in Precipitation and Related Wind Dynamics and Moisture and Heat Features in Separate Areas of the South China Sea before and after Summer Monsoon Onset

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Advances in Atmospheric Sciences 2024年第8期41卷 1643-1660页

作者： Chunyan ZHANG Donghai WANG Kaifeng ZHANG Wanwen HE yanping ZHENG Yan XU Guangdong Meteorological Data Center Guangdong Meteorological BureauGuangzhou 510640China School of Atmospheric Sciences Sun Yat-sen UniversityGuangdong Province Key Laboratory for Climate Change and Natural Disaster StudiesKey Laboratory of Tropical Atmosphere-Ocean SystemMinistry of EducationZhuhai 519082China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China National Observation and Research Station of Coastal Ecological Environments in Macao Macao Environmental Research InstituteMacao University of Science and TechnologyMacao SAR 999078China Foshan Meteorological Service Foshan 528000China Ningjiang District Meteorological Bureau Songyuan 138000China

Using surface and balloon-sounding measurements, satellite retrievals, and ERA5 reanalysis during 2011–20, this study compares the precipitation and related wind dynamics, moisture and heat features in different areas of the South China Sea(SCS) before and after SCS summer monsoon onset(SCSSMO). The rainy sea around Dongsha(hereafter simply referred to as Dongsha) near the north coast, and the rainless sea around Xisha(hereafter simply referred to as Xisha) in the western SCS, are selected as two typical research subregions. It is found that Dongsha, rather than Xisha, has an earlier and greater increase in precipitation after SCSSMO under the combined effect of strong low-level southwesterly winds, coastal terrain blocking and lifting, and northern cold air. When the 950-h Pa southwesterly winds enhance and advance northward, accompanied by strengthened moisture flux, there is a strong convergence of wind and moisture in Dongsha due to a sudden deceleration and rear-end collision of wind by coastal terrain blocking. Moist and warm advection over Dongsha enhances early and deepens up to 200 h Pa in association with the strengthened upward motion after SCSSMO, thereby providing ample moisture and heat to form strong precipitation. However, when the 950-h Pa southwesterly winds weaken and retreat southward, Xisha is located in a wind-break area where strong convergence and upward motion centers move in. The vertical moistening and heating by advection in Xisha enhance later and appear far weaker compared to that in Dongsha, consistent with later and weaker precipitation.

关键词： Dongsha Xisha South China Sea summer monsoon onset precipitation wind dynamics moisture heat

Human thermal comfort in non-uniform thermal environments:A review

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Energy and Built Environment 2024年第6期5卷 853-862页

作者： Xiaowen Su yanping Yuan Zhaojun Wang Wei Liu Li Lan Zhiwei Lian School of Mechanical Engineering Southwest Jiaotong UniversityChengduChina 610031 School of Architecture Harbin Institute of TechnologyHarbinChina 150006 Department of Architecture School of DesignShanghai Jiao Tong UniversityShanghaiChina

Thermal comfort is critical for ensuring the health and productivity of occupants and knowing their thermal demand could help creat a satisfying environment with the least energy *** of thermal comfort is built based on experimental studies in uniform and stable environments,while there is still a gap when applying in evaluating human thermal comfort in non-uniform thermal ***,an insight into human thermal comfort in non-uniform thermal environments is *** fundamental studies of thermal comfort in non-uniform thermal environments are explicated,including thermal comfort theory applied in non-uniform thermal environments,types of non-uniform thermal environments and corresponding studies,physiological and psychological thermal responses in the ***,the evaluation indices of non-uniform thermal environments are classified according to their definitions and the comfort models are ***,future works in this research field are *** general,the overall thermal comfort and local thermal comfort should be both taken into account in non-uniform thermal environments where skin temperatures and psychological thermal responses of occupants are different among local body ***,as studies of local thermal comfort are mainly conducted in thermally neutral condition,the limits considering the state deviating thermal neutrality(slightly warm or cool),which is frequently found in reality,are encouraged to be ***,a well-defined comprehensive index should be proposed considering heat exchange of human body with their microenvironments and thus the comfort range of the index could be provided for designing of non-uniform thermal environments.

关键词： Local thermal comfort Non-uniform thermal environment Comfort theory Thermal response Evaluation indices

锂电池极片涂布机NMP回收系统的红外辐射研究

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系统仿真学报 2020年第1期32卷 96-104页

作者：肖艳军杨欢康炎平河北工业大学机械工程学院

目前锂电池极片涂布过程中NMP回收系统的结构面临很大问题,其中包含了真空以及红外辐射加热技术。针对真空系统,分析了其对涂布机工艺的影响,通过对NMP回收系统的烘干需求分析,采用层次分析法确定了最适合本系统的红外辐射加热器类型;... 详细信息

目前锂电池极片涂布过程中NMP回收系统的结构面临很大问题,其中包含了真空以及红外辐射加热技术。针对真空系统,分析了其对涂布机工艺的影响,通过对NMP回收系统的烘干需求分析,采用层次分析法确定了最适合本系统的红外辐射加热器类型;对回收气态NMP过程进行了数值模拟,得到了系统流畅性能的仿真结果;通过红外辐射加热器加热极片的多组小实验及数据图表对烘干的时间、布置方式等参数进行了确定。对NMP溶剂的回收稳定及效率、干燥的效果及极片导电性能有重大的影响。

关键词：锂电池极片 NMP回收系统真空系统红外辐射层次分析法

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基于STM32系列电子产品的IAP研究

现代电子技术 2017年第22期40卷 142-144,148页

作者：康燕萍程小辉黄鹏桂林理工大学信息科学与工程学院广西桂林541004 桂林优利特医疗电子有限公司广西桂林541004

研究一种基于STM32系列单片机实现IAP升级固件的方案,此方案对比ST官网IAP升级固件方案有较大的改进。电子产品出厂烧录固件时无需额外烧录Boot Loader引导代码,出厂后的电子产品可使用USB线与电脑连接,通过USB接口把需要升级的固件拷... 详细信息

研究一种基于STM32系列单片机实现IAP升级固件的方案,此方案对比ST官网IAP升级固件方案有较大的改进。电子产品出厂烧录固件时无需额外烧录Boot Loader引导代码,出厂后的电子产品可使用USB线与电脑连接,通过USB接口把需要升级的固件拷贝到电子产品自带的外部FLASH中。STM32读取外部FLASH中的固件对自身的FLASH数据进行升级,整个升级过程中不受断电影响。此升级方案可应用于智能家居产品、医疗电子产品、智能家电产品等。

关键词： STM32 在线应用编程固件 USB 闪存