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社区环境与活动空间共享对社区归属感的影响

地理研究 2024年第9期43卷 2343-2353页

作者：塔娜孙翊豪华东师范大学地理科学学院上海200241 华东师范大学地理信息科学教育部重点实验室上海200241 自然资源部超大城市自然资源时空大数据分析应用重点实验室上海200241

社会转型与移动性背景下,个体与社区环境的互动方式不断重构,社区归属感的形成路径更加复杂。基于此,本文利用上海市居民活动与出行调查数据,建立公共接触潜力的广度、强度和跨群体接触指数测度居民的社区活动空间共享特征,运用有序logi... 详细信息

社会转型与移动性背景下,个体与社区环境的互动方式不断重构,社区归属感的形成路径更加复杂。基于此,本文利用上海市居民活动与出行调查数据,建立公共接触潜力的广度、强度和跨群体接触指数测度居民的社区活动空间共享特征,运用有序logit模型探究社区环境、活动空间共享对居民社区归属感的影响。研究发现:①公共接触潜力广度和跨收入群体公共接触潜力对社区归属感具有负向影响,跨户口群体公共接触潜力具有正向影响,公共接触潜力强度影响不显著。②社区外来人口比例较高有利于提升社区归属感,说明社区社会组成多样有利于提升对社区的情感依赖。③社区环境感知对社区归属感具有正向影响,商品房居民比其他社区居民更有可能表现出高社区归属感。④本地、中收入、已婚和拥有住房产权的居民更有可能对社区产生情感依赖,但日常活动远离社区的人更难建立起对社区的情感。本文提出通过活动空间共享深化移动性背景下社区促进社会融合的机制研究,丰富社区社会融合理论,为构建包容性城市和促进高质量发展提供参考。

关键词：行为地理学户口社会融合社区活动空间

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地铁可达性对生活满意度的影响研究进展

科技导报 2024年第3期42卷 44-52页

作者：塔娜王琦华东师范大学地理信息科学教育部重点实验室上海200241 华东师范大学地理科学学院上海200241 自然资源部超大城市自然资源时空大数据分析应用重点实验室上海200241

总结了地铁可达性的测度方法,梳理了地铁可达性对生活满意度影响的直接与间接效应,构建了地铁可达性对生活满意度影响的行为框架,以行为地理学与城市规划的相关理论为基础,从微观个体的视角出发,探讨地铁可达性、个体时空间行为、生活... 详细信息

总结了地铁可达性的测度方法,梳理了地铁可达性对生活满意度影响的直接与间接效应,构建了地铁可达性对生活满意度影响的行为框架,以行为地理学与城市规划的相关理论为基础,从微观个体的视角出发,探讨地铁可达性、个体时空间行为、生活满意度三者之间的关系。

关键词：地铁可达性时空间行为生活满意度行为地理学

Molecular mechanism of flowering time regulation in Brassica rapa:similarities and differences with Arabidopsis

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Horticultural Plant Journal 2024年第3期10卷 615-628页

作者： na Li Rui Yang Shuxing Shen Jianjun Zhao State Key Laboratory of North China Crop Improvement and Regulation Key Laboratory of Vegetable Germplasm Innovation and Utilization of HebeiCollaborative Innovation Center of Vegetable Industry in HebeiCollege of HorticultureHebei Agricultural UniversityBaodingHebei 071000China

Properly regulated flowering time is pivotal for successful plant *** floral transition from vegetative growth to reproductive growth is regulated by a complex gene regulatory network that integrates environmental signals and internal conditions to ensure that flowering takes place under favorable *** rapa is a diploid Cruciferae species that includes several varieties that are cultivated as vegetable or oil *** time is one of the most important agricultural traits of *** crops because of its influence on yield and *** transition to flowering in *** is regulated by several environmental and developmental cues,which are perceived by several signaling pathways,including the vernalization pathway,the autonomous pathway,the circadian clock,the thermosensory pathway,and gibberellin(GA)*** signals are integrated to control the expression of floral integrators BrFTs and BrSOC1s to regulate *** this review,we summarized current research advances on the molecular mechanisms that govern flowering time regulation in *** and compare this to what is known in Arabidopsis.

关键词： Flowering time Brassica rapa Vernalization Photoperiod

Reactive Transport Process of Earthquake-induced Hydrochemical Changes in Guanding Thermal Spring,Western Sichuan,China

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Acta Geologica Sinica(English Edition) 2024年第1期98卷 241-249页

作者： na Jin JIANG Xue SHI Zheming CHEN Yanmei Hubei Key Laboratory of Petroleum Geochemistry and Environment(Yangtze University) Wuhan 430100China School of Environmental Studies China University of GeosciencesWuhan 430074China School of Water Resources and Environment China University of GeosciencesBeijing 100083China State Key Laboratory of Water Resource Protection and Utilization in Coal Mining Beijing 100000China

Earthquake-related hydrochemical changes in thermal springs have been widely observed;however,quantitative modeling of the reactive transport process is *** the present study,we apply reactive transport simulation to capture the hydrochemical responses in a thermal spring following the Wenchuan Ms 8.0 and Lushan Ms 7.0 *** first constrain deep reservoir geothermal fluid compositions and temperature by multicomponent geothermometry,and then a reactive geochemical transport model is constructed to reproduce the hydrochemical evolution *** results show that the recharge from the shallow aquifer increases gradually until it reaches a peak because of the permeability enhancement caused by the Lushan earthquake,which may be the mechanism to explain the earthquake-related hydrochemical *** contrast to the postseismic effect of the Wenchuan earthquake,the chemical evolution can be considered as hydrochemical anomalies related to the Lushan *** study proves that the efficient simulation of reactive transport processes is useful for investigating earthquake-related signals in hydrochemical time series.

关键词： earthquake hydrochemical changes reactive geochemical transport model Kangding area

Molecular mechanisms of stress resistance in sorghum: Implications for crop improvement strategies

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Journal of Integrative Agriculture 2024年第3期23卷 741-768页

作者： Hongxiang Zheng Yingying dang Xianmin diao na Sui Shandong Provincial Key Laboratory of Plant Stress/College of life Sciences Shandong Normal UniversityJinan 250014China Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China

Abiotic stresses, such as drought, salt, extreme temperatures, and heavy metal pollution, are the main environmental factors that limit crop growth and yield. Sorghum, a C4 grass plant with high photosynthetic efficiency, can grow in adverse environmental conditions due to its excellent stress resistance characteristics. Therefore, unraveling the stress-resistance mechanism of sorghum could provide a theoretical basis for developing and cultivating various stress-resistant crops. This understanding could also help to create a conducive environment for using marginal soil in agriculture and ensuring food security. In this review, we discuss the adaptation mechanisms of sorghum under drought, salinity, temperature, and soil heavy metal stresses, the specific response to stress, the screening of sorghum-resistant germplasm, and the identification and functional analysis of the relevant genes and quantitative trait loci(QTL). In addition, we discuss the application potential of different stress-tolerant sorghum germplasms reported to date and emphasize the feasibility and potential use in developing and promoting highly stress-tolerant sorghum in marginal soil.

关键词： abiotic stress C4 plants QTL sorghum stress resistance yield stability

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中国地理学的行为革命及其理论内涵

地理研究 2024年第9期43卷 2259-2270页

作者：柴彦威塔娜北京大学城市与环境学院北京100871 华东师范大学地理信息科学教育部重点实验室上海200241 华东师范大学地理科学学院上海200241 自然资源部超大城市自然资源时空大数据分析应用重点实验室上海200241

流动性社会与高质量发展对中国地理学的理论创新提出了新的要求。在积极响应中国式现代化转型中的规划与治理需求过程中,中国地理学迫切需要对中国城乡社会的微观过程与行为机理进行刻画与解释,构建具有中国特色、指导中国社会建设的行... 详细信息

流动性社会与高质量发展对中国地理学的理论创新提出了新的要求。在积极响应中国式现代化转型中的规划与治理需求过程中,中国地理学迫切需要对中国城乡社会的微观过程与行为机理进行刻画与解释,构建具有中国特色、指导中国社会建设的行为地理学研究范式。本文在借鉴西方地理学从计量革命走向行为革命的范式转型路径的基础上,提出中国地理学行为革命的理论框架,并讨论了行为革命对中国社会经济发展现实需求的意义和对中国地理学学科建设的贡献。行为革命立足于建立基于人的地理学解释框架,关注“时空间中的人”这一主体,构建以时空间行为交互与整合为核心的研究新范式,从个体行为与行为交互两个维度探索行为过程的机理解释,并引入新技术、新方法建立多维整合的混合研究路径,最终建立人地互动的决策支持系统。

关键词：行为地理学行为革命时空间行为中国社会转型中国地理学

UiO-66-NH_(2)nanoparticles supported on layered double hydroxides as an excellent adsorbent for levofloxacin capture

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Particuology 2024年第9期92卷 155-165页

作者： Yan Li Heng Lin Qiaolan Yu na Ma Wei dai College of Geography and Environmental Sciences Zhejiang Normal UniversityJinhua321004China Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Materials ScienceZhejiang Normal UniversityJinhua321004China

The adsorption performances of individual adsorbent such as UiO-66-NH_(2)and MgAl-layered double hydroxides(MgAl-LdH)toward levofloxacin(LVX)is less satisfactory due to the disappointing uptake capacity and adsorption ***,a 3d flower-like composite adsorbent prepared via iterative hydrothermal synthesis method anchoring UiO-66-NH_(2)nanoparticles onto the MgAl-LdH *** to the synergistic effects of UiO-66-NH_(2),and MgAl-LdH,the MgAl-LdH@UiO-66-NH_(2)exhibits an outstanding adsorption performance toward ***,the maximum LVX uptake capacity over MgAl-LdH@UiO-66-NH_(2)reached 268 mg/g,which was higher than that of the individual adsorption materials UiO-66-NH_(2)(41 mg/g),MgAl-LdH(140 mg/g),and some adsorbents reported in previous *** rapid adsorption process can reach equilibrium within 20 min,which conformed well to the pseudo-second-order kinetics and the Langmuir isotherm *** thermodynamic result also indicated that the adsorption was spontaneous and exothermic,simultaneous coexisting physical and chemical adsorption ***,the MgAl-LdH@UiO-66-NH_(2)still maintained excellent adsorption capacity with a slightly decrease after fifth cycle,exhibiting a remarkable reuse and stable *** work provides a highly novel strategy to prepare recyclable composite adsorbent for the LVX capture from aqueous solution.

关键词： Layered double hydroxides UiO-66-NH_(2) LVX Adsorption

Exceptional points enhance sensing in silicon micromechanical resonators

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Microsystems & nanoengineering 2024年第1期10卷 17-25页

作者： Man-na Zhang Lei dong Li-Feng Wang Qing-An Huang Key Laboratory of MEMS of the Ministry of Education Southeast UniversityNanjing 210096China

Exceptional points(EPs)have recently emerged as a new method for engineering the response of open physical systems,that is,systems that interact with the *** systems at the EPs exhibit a strong response to a small ***,we show a method by which the sensitivity of silicon resonant sensors can be enhanced when operated at *** our experiments,we use a pair of mechanically coupled silicon micromechanical resonators constituting a parity-time(PT)-symmetric *** perturbations introduced on the mechanically coupled spring cause the frequency to split from the EPs into the PT-symmetric regime without broadening the two spectrum linewidths,and this frequency splitting scales with the square root of the perturbation *** overall signal-tonoise ratio is still greatly enhanced,although the measured noise spectral density of the EP sensing scheme has a slight increase comparable to the traditional *** results pave the way for resonant sensors with ultrahigh sensitivity.

关键词： resonant symmetric points

Advances in self-assembly-based circularly polarized luminescent materials

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Science China Chemistry 2024年第10期67卷 3247-3257页

作者： Bing-Hao Liu Yang Zong na Liu Zong-Quan Wu State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China The School of Pharmaceutical Sciences Jilin UniversityChangchun 130021China

Circularly polarized luminescent(CPL)materials have garnered attention for their diverse applications,including three-dimensional(3d)imaging,bio-imaging,chiral sensing,and other emerging ***,the fabrication of CPL-activated materials required the use of chiral luminescent small *** introduction of the idea of self-assembly has transformed the production of CPL-activated materials,providing new and promising opportunities for their *** utilizing self-assembly,it is now feasible to produce chiral nano-assemblies with CPL activity not only from chiral molecules but also from non-chiral substances and inorganic *** addition,self-assembly routes provide a way to increase the asymmetry factor,creating possibilities for additional refinement and adjustment of CPL material *** review offers a summary of the current progress and developments in the self-assembly of small molecules and polymers,with a specific emphasis on their capacity to create or enhance CPL in different *** aim of this review is to inspire interest in optical materials that are based on the principles of self-assembly.

关键词： circularly polarized luminescence photochemistry self-assembly chiral materials