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物流业集聚、空间溢出效应与农业绿色全要素生产率——基于省域数据的实证分析 被引量:18
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作者 鄢曹政 殷旅江 何波 《中国流通经济》 CSSCI 北大核心 2022年第9期3-16,共14页
基于我国31个省(自治区、直辖市)2016—2020年面板数据,探析物流业集聚对我国农业绿色全要素生产率的影响机制,利用区位熵法和DEA-Malmquist模型对物流业集聚水平和农业绿色全要素生产率进行测算;根据探索性空间数据分析方法对二者进行... 基于我国31个省(自治区、直辖市)2016—2020年面板数据,探析物流业集聚对我国农业绿色全要素生产率的影响机制,利用区位熵法和DEA-Malmquist模型对物流业集聚水平和农业绿色全要素生产率进行测算;根据探索性空间数据分析方法对二者进行空间相关性检验,揭示其空间演化特征;通过空间杜宾模型分析物流业集聚对农业绿色全要素生产率的空间溢出效应。研究表明:在样本考察期内,我国物流业集聚水平不高,地区间存在显著空间正相关性;农业绿色全要素生产率平稳增长,全局空间相关性较弱,地区之间存在显著局部空间相关性且呈现出随时间变化加强的趋势;从区域层面来看,我国物流业集聚水平与农业绿色全要素生产率增幅并不完全符合;物流业集聚对当地农业绿色全要素生产率具有明显促进作用,对邻近地区具有正向空间溢出效应;城镇化率、财政支农水平、农业机械化程度对农业绿色全要素生产率具有正向影响,而工业化水平、开放程度、自然灾害对农业绿色全要素生产率具有抑制作用。为此,结合我国实际情况,应从构建物流集聚高地、促进物流省际交流等方面发挥物流业集聚及空间溢出效应,提升农业技术效率,促进两业协同、绿色、健康发展。 展开更多
关键词 物流业集聚 农业绿色全要素生产率 DEA-Malmquist模型 空间杜宾模型 空间溢出效应
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Characterization of carbon fibers recovered through mechanochemical-enhanced recycling of waste carbon fiber reinforced plastics 被引量:2
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作者 NZIOKA Antony Mutua ALUNDA Bernard Ouma +4 位作者 yan cao-zheng SIM Ye-Jin KIM Myung-Gyun YOON Bok-Young KIM Young-Ju 《Journal of Central South University》 SCIE EI CAS CSCD 2019年第10期2688-2703,共16页
In this study,we present the characterization of the carbon fibers recovered from the mechanochemical-enhanced recycling of carbon fiber reinforced fibers.The objectives of the study were to investigate the effect of ... In this study,we present the characterization of the carbon fibers recovered from the mechanochemical-enhanced recycling of carbon fiber reinforced fibers.The objectives of the study were to investigate the effect of our modified recycling method on the interfacial properties of recovered fibers.The reinforced plastics were recycled;the recycling efficiency was determined and the recovered fibers were sized using 1 wt%and 3 wt%concentration of(3-aminopropyl)triethoxysilane.We characterized the morphologies utilizing the electron spectroscopy for chemical analysis(ESCA),atomic force microscopy(AFM),FTIR-attenuated total reflection(ATR)spectroscopy and scanning electron microscopy(SEM).Although the surface of the fibers had no cracks,there was evidence of contaminations which affected the interfacial properties and the quality of the fibers.Results showed that the trends in the recovered and virgin fibers were similar with an increase in sizing concentration.The results highlighted the perspectives of increasing the quality of recovered fibers after the recycling process. 展开更多
关键词 recycled carbon fibers fiber reinforced plastics mechanochemical process interfacial property surface morphology
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