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淘宝村集聚促进家庭农场发展的研究--以长三角为例

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中国农业资源与区划 2024年第5期45卷 233-244页

作者：林玉妹李承翰上海对外经贸大学马克思主义学院上海201620

[目的]家庭农场作为新型农业经营主体的核心,探究以“淘宝村”为典型模式的农村电子商务集聚对家庭农场的影响,对于发展新型农村集体经济具有重要意义。[方法]文章基于2015—2020年中国长三角地区城市面板数据,使用固定效应模型、空间... 详细信息

[目的]家庭农场作为新型农业经营主体的核心,探究以“淘宝村”为典型模式的农村电子商务集聚对家庭农场的影响,对于发展新型农村集体经济具有重要意义。[方法]文章基于2015—2020年中国长三角地区城市面板数据,使用固定效应模型、空间计量模型和中介效应模型等方法,结合集聚外部性理论实证研究了淘宝村集聚对家庭农场的影响及作用路径。[结果]淘宝村集聚对家庭农场的发展有显著的促进作用并且存在正向空间溢出效应,且该效应在不同城市规模和人力资本水平的地区存在明显的差异性。进一步通过机制检验发现,淘宝村集聚通过知识溢出、设施共享和劳动力匹配效应来助力家庭农场的发展。[结论]培养家庭农场主电商经营能力,推进农业数字化转型,提升农村电子商务的配套服务水平,加快实现家庭农场与农村电子商务的深度融合发展。

关键词：淘宝村集聚农村电子商务家庭农场新型农业经营主体空间溢出

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输变电技术在智能电网中的应用

通信电源技术 2024年第12期41卷 67-69页

作者：林玉梅康尼电子科技有限公司江苏南京210046

输变电技术可以实时采集电力输送数据,实现电力输送过程的自动控制,在智能电网安全可靠运行中发挥着重要作用。随着技术的发展,如何更好把控输变电技术在智能电网中的应用已成为人们关注的焦点。文章从智能电网和输变电技术的概念入手,... 详细信息

输变电技术可以实时采集电力输送数据,实现电力输送过程的自动控制,在智能电网安全可靠运行中发挥着重要作用。随着技术的发展,如何更好把控输变电技术在智能电网中的应用已成为人们关注的焦点。文章从智能电网和输变电技术的概念入手,分析智能电网中常用的输变电技术,并提出输变电技术落实的相关保障措施,以提高智能电网的运行质量,对未来输变电技术在智能电网中的应用研究具有一定的参考意义。

关键词：输变电技术智能电网电力输送

Sev对低氧缺糖诱导的脑神经元细胞损伤的影响

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脑与神经疾病杂志 2024年第3期32卷 180-184页

作者：陈基胜符明君林玉美海口市第三人民医院麻醉科海南571138

目的研究七氟醚(Sev)调控Toll样受体4 (TLR4)/核转录因子κB (NF-κB)信号通路抑制低氧缺糖对脑神经元细胞损伤的保护作用。方法将大鼠皮质神经元细胞分为对照组、模型组、1.0MAC和2.0 MAC七氟醚组;细胞计数试剂盒(CCK-8)法、流式细... 详细信息

目的研究七氟醚(Sev)调控Toll样受体4 (TLR4)/核转录因子κB (NF-κB)信号通路抑制低氧缺糖对脑神经元细胞损伤的保护作用。方法将大鼠皮质神经元细胞分为对照组、模型组、1.0MAC和2.0 MAC七氟醚组;细胞计数试剂盒(CCK-8)法、流式细胞术检测细胞增殖和凋亡。试剂盒检测丙二醛(MDA)含量以及超氧化物歧化酶(SOD)、过氧化氢酶(CAT)活性。酶联免疫吸附测定法(ELISA)检测肿瘤坏死因子(TNF-α)、白细胞介素-6 (IL-6)、白细胞介素-8 (IL-8)水平;蛋白印迹法(Western blot)检测Bcl-2相关X蛋白(Bax)、B细胞淋巴瘤/白血病-2 (Bcl-2)、TLR4、磷酸化核因子κB抑制蛋白α (p-IκBα)和核因子κB抑制蛋白α (IκBα)蛋白表达。结果与对照组比较,模型组细胞存活率、SOD、CAT活性降低(均P<0.05),凋亡率、MDA含量、TNF-α、IL-6、IL-8水平升高(P<0.05),TLR4、p-IκBα蛋白表达升高;与模型组比较,Sev显著升高细胞存活率、SOD、CAT活性(P<0.05),显著降低细胞凋亡率、MDA含量、TNF-α、IL-6、IL-8水平(P<0.05),TLR4、p-IκBα蛋白表达降低(P<0.05)。结论Sev可减轻低氧缺糖诱导的脑神经元细胞损伤,其机制可能与抑制TLR4/NF-κB信号通路有关。

关键词：七氟醚 TLR4/NF-κB信号通路低氧缺糖神经元细胞损伤

Climate Suitability Assessment of Human Settlements for Regions along the Belt and Road

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Chinese Geographical Science 2021年第6期31卷 996-1010页

作者： lin yumei LI Peng FENG Zhiming YANG Yanzhao YOU Zhen ZHU Fuxin Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing100049China National Tibetan Plateau Data Center Key Laboratory of Tibetan Environmental Changes and Land Surface ProcessesInstitute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing100101China

Climate is one important environmental variable that affects human *** the regions along the Belt and Road(B&R)encompass vast territories and large populations,it is significant to assess climate suitability for human settlements,which will influence the migration of various surrounding *** selected seven regions including 65 countries along the B&R for the research area and adopted the temperature-humidity index(THI),to assess the climate *** analyzed the spatial characteristics of THI and the correlation between population distribution and THI,the results of which enabled us to adjust the THI classification *** finally assessed the climate suitability of each *** results reveal that outside the Qinghai-Tibet Plateau,the THI values generally tend to decrease from west to east as longitude increases and downward with increasing *** population distribution is significantly correlated with the *** with relative suitable climate,including high suitability areas(HASs),moderately suitable areas(MSAs)and low suitability areas(LSAs),account for 50.62%of the total area and encompass in excess of 90%of total *** areas are widely distributed in the southern regions of 45°N latitude,again with the exception of the Qinghai-Tibet *** suitable area includes 19.48%of the entire area and 8.98%of total *** non-suitable area accounts for less than 30%of total area,concentrated in the cold high-latitude and high-altitude areas.

关键词： climate suitability temperature-humidity index human settlements spatial distribution the Belt and Road

调整体位角度护理对极低出生体重儿胃食管反流和胃排空的影响

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中国医药指南 2024年第24期22卷 49-51页

作者：张美莉林玉梅颜惠萍泉州市儿童医院新生儿重症监护室泉州362000

目的探讨不同体位角度下极低出生体重儿(VLBWI)的胃食管反流与胃排空情况,为规避VLBWI吸入风险提供参考。方法以2022年9月至2023年9月我院收治的120例VLBWI为研究对象,用随机数字表法分为3组,予以不同喂养体位护理方案。试验组40例,近... 详细信息

目的探讨不同体位角度下极低出生体重儿(VLBWI)的胃食管反流与胃排空情况,为规避VLBWI吸入风险提供参考。方法以2022年9月至2023年9月我院收治的120例VLBWI为研究对象,用随机数字表法分为3组,予以不同喂养体位护理方案。试验组40例,近似坐位(90°)喂养,喂养后近似坐位30 min+头高足低60°30 min+头高足低30°保持。对照1组40例,头高足低60°喂养,喂养后头高足低60°30 min+头高足低30°保持。对照2组40例,头高足低30°喂养,喂养后头高足低30°保持。喂养期间,统计3组溢乳/呕吐与呼吸暂停的发生例次,计算3组呼吸暂停与气管内呛咳的发生率,评价胃食管反流情况。统计3组胃残留、减量喂养与停喂的发生例次,评价胃排空情况。结果试验组溢乳/呕吐发生例次少于对照1组,溢乳/呕吐与呼吸暂停发生例次少于对照2组,呼吸暂停和气管内呛咳发生率低于对照2组(P<0.05)。试验组胃残留、减量喂养与停喂发生例次少于对照1组和对照2组,对照1组胃残留、减量喂养与停喂发生例次少于对照2组(P<0.05)。结论采用近似坐位喂养VLBWI,喂养后保持近似坐位30 min,再调至头高足低位60°保持30 min,最后降至头高足低30°并保持的体位护理方案,可以加快VLBWI胃排空,减少胃食管反流。

关键词：极低出生体重儿体位角度护理胃食管反流胃排空

Assessment of Climate Suitability for Human Settlements in Tibet,China

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Journal of Resources and Ecology 2022年第5期13卷 880-887页

作者： lin yumei ZHU Fuxin LI Wenjun LIU Xiaona Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China The National Tibetan Plateau Data Center Key Laboratory of Tibetan Environmental Changes and Land Surface ProcessesInstitute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Beijing Municipal Research Institute of Eco-Environment Protection National Urban Environmental Pollution Control Engineering Research CenterBeijing 100037China

Climate is an important factor that affects the livability of a *** climate suitability of a region’s environment for human settlement profoundly affects the regional socio-economic development and the population *** is an area that is sensitive to climate *** the impact of global climate change,the climate suitability of Tibet has undergone significant *** this study,the temperature humidity index(THI)values for Tibet were calculated,and the relationships between the population distribution and the THI were analyzed *** this way,the zoning standards for climate suitability in Tibet were determined such that the climate suitability could be *** results show that the average annual temperature in the southeast of Tibet,where the population was densely distributed,was relatively *** mean annual relative humidity showed a trend of gradually decreasing from south to *** with a suitable climate,including the high suitability areas(HSAs),the moderately suitable areas(MSAs)and the low suitability areas(LSAs),accounted for only 7.90%of the total area but accommodated over 40%of the total *** critically suitable areas(CSAs)accounted for 37.81%of the land area and 48.24%of the total ***-suitable areas(NSAs)were widely distributed in Tibet and accounted for 54.29%of the total area and 11.33%of the total *** results of this study may provide a reference for guiding the reasonable distribution of population and promoting the optimization of the spatial planning in Tibet.

关键词： climate suitability temperature-humidity index human settlements Tibet

Inductive effect of Ti-doping in Fe_(2)O_(3)enhances the photoelectrochemical water oxidation

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Science China Chemistry 2023年第7期66卷 2091-2097页

作者： yumei lin Yan Wang Hongxia Wang Jingjing Wang Xiaofeng Wu Jan P.Hofmann Giulio Gorni Victor A.de la Pena O'Shea Freddy E.Oropeza Kelvin H.L.Zhang State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Surface Science Laboratory Department of Materials and Earth SciencesTechnical University of DarmstadtDarmstadt 64287Germany CELLS-ALBA Synchrotron Barcelona 08290Spain Institute of Optics(IO-CSIC) c/Serrano 121Madrid 28006Spain Photoactivated Processes Unit IMDEA Energy InstituteMadrid 28935Spain

Hematite(α-Fe_(2)O_(3))is an ideal oxide semiconductor candidate for photoelectrochemical(PEC)water *** of Fe_(2)O_(3)is known to benefit the PEC water oxidation efficiency,but despite extensive research efforts,the underlying mechanism still remains *** this work,we report a comprehensive study on the relationship between the electronic structure,interfacial reaction kinetics and PEC activity of Ti-doped Fe_(2)O_(3)*** results show that the interfacial charge transfer efficiency at the Fe_(2)O_(3)/electrolyte interface is the main factor in the significant increase of the PEC activity of doped Fe_(2)O_(3).Electrochemical impedance spectroscopy reveals that the interfacial charge transfer efficiency is determined by energy overlap between the water oxidation potential and energy distribution of an intermediate surface state that has been identified as Fe^(IV)=O groups on Fe_(2)O_(3)surface generated during PEC ***,the potential energy distribution of this intermediate surface state can be modulated by Ti doping,and a shift towards a more positive potential of the intermediate surface state increases the overlap with the water oxidation potential and thus enhances the kinetics of charge transfer for PEC water *** origin of such potential energy modulation is traced to the inductive effect from Ti-doping on the Fe^(3+)/Fe^(4+)redox transition and the Fe-O bond *** results provide new insight into the mechanism for the doping effect on the PEC water splitting,introducing new strategies to optimize the PEC activity by tuning the redox properties of active metal oxides.

关键词： hematite surface states doping photoelectrochemical water splitting electronic structure

Research on Land Resource Carrying Capacity:Progress and Prospects

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Journal of Resources and Ecology 2018年第4期9卷 331-340页

作者： SUN Tong FENG Zhiming YANG Yanzhao lin yumei WU Yanjuan Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China College of resources and environment University of Chinese Academy of SciencesBeijing 100049China National Academy of Innovation Strategy Beijing 100863China

As an important part of resource and environment carrying capacity（RECC）,land resource carrying capacity（LRCC） has focused on the limiting factors on regional development from the scale of land resources for more than two hundred *** a brief review of the origin and early development of LRCC,the progress of LRCC is summarized as a progression from land resource population carrying capacity（LPCC） to land resource comprehensive carrying capacity（LCCC）,and the hot issues of LRCC have changed from the simple human–grain relationship to more complex social and economic activities–land resources *** corresponding research methods also evolved,from static research to dynamic research,and the assessment factor have evolved from a single factor to a comprehensive index ***-ecological zoning（AEZ）,system dynamics（SD）,ecological footprint（EF）,and comprehensive evaluation methods have come to be viewed as the most representative methods of LRCC in recent *** a focus of conventional LRCC research,the human–grain relationship still plays a significant role in LRCC evaluation because grain remains the top limiting factor of land resources and is the most significant criterion in the balance between regional population and land resources,especially for very populous *** attention should be paid to the accurate calculation of arable land and average food consumption levels to improve the scientific basis of LRCC *** development of science and technology and the variation of lifestyle are also important factors that influence regional *** a new topic of LRCC,LCCC has expanded the research field of LRCC in an attempt to reveal the limiting effects of land resource under open systems,but some issues such as carrying mechanism research and the combination of theoretical and applied research are needed in future studies to promote the further development of LCCC.

关键词： land resource carrying capacity grain land comprehensive carrying capacity

区域一体化背景下跨区域产业协同发展研究——以长三角地区为例

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中州学刊 2022年第11期 34-40页

作者：林玉妹林善浪上海对外经贸大学马克思主义学院上海201620 同济大学经济与管理学院上海200092

推动区域一体化发展是国家的重大战略,产业跨区域协同发展是区域一体化的核心议题。以长三角地区为例,长三角地区产业协同发展效果显著,不断优化二、三产业跨区域空间布局,构建跨区域分工协作的制造产业链,构筑多层次的生产性服务业聚集... 详细信息

推动区域一体化发展是国家的重大战略,产业跨区域协同发展是区域一体化的核心议题。以长三角地区为例,长三角地区产业协同发展效果显著,不断优化二、三产业跨区域空间布局,构建跨区域分工协作的制造产业链,构筑多层次的生产性服务业聚集区,建设“一极两核多点”的跨区域原始创新策源地,打造跨区域协同创新共同体。但目前长三角地区仍存在跨区域产业协同发展体制机制不健全、部分地区跨区域产业协同效果不显著、地区之间产业素质参差不齐、跨区域产业布局存在“路径依赖”、跨区域科创产业融合存在着体制性障碍等深层次问题。因此,要提高政府跨区域治理能力、推进跨区域创新链和产业链衔接联动、优化跨区域协同创新共同体、创新跨区域科技成果转化机制、培育分工协作的创新产业集群。

关键词：区域一体化产业发展跨区域协同