新冠肺炎语境下气溶胶研究现状及趋势—基于Citespace的网络图谱分析

Current studies on aerosols related to COVID-19 and the trends of researches-a visualized network analysis via Citespace

目的以"气溶胶-新冠肺炎/新冠病毒"为中心,进行文献计量和可视化分析,归纳与展望该领域研究的发展历程、研究热点变化及趋势。方法利用文献计量学分析软件Citespace,对Web of Science核心数据集数据库检索得到的文献进行统计分析。其中针对发文国家,发文研究机构进行共现分析及可视化图谱绘制,对文献关键词进行共现分析及聚类时间线分析,同时对文献进行共被引聚类网络分析及可视化图谱绘制。结果美中两国分别以998及527篇占据发文量前两位;其中中国科学院发文量最多,为80篇;英法两国研究机构在共现网络的中介中心性评估中取得较高的分数。各有12个聚类被纳入文献共被引聚类分析及文献关键词聚类时间线分析中。关键词频次及共现网络分析中,"空气传播(airborne transmission)"、"温度(temperature)"及"相对湿度(relative humidity)"出现频次较高。结论中国及北美研究机构的发文数量高于其他国家,但跨区域合作与英国及北欧的研究机构相比较少。目前研究主要集中于由携带病毒气溶胶导致的感染风险评估,人群密集场所中气溶胶的测定及有效控制正逐渐成为新的研究热点之一。

Objective To perform bibliometric and visualization analyses using"aerosol-coronavirus disease 2019/severe acute respiratory syndrome coronavirus 2"as the topic,so as to summarize and predict the development history,modification and trends of research interests in this field.Methods The bibliometric analysis software,Citespace was used to perform statistical analysis on the literature retrieved from the Web of Science core data set database.For the countries and the research institutes that published articles,the co-occurrence analysis and visual map drawing were conducted.For keywords in the references,the co-occurrence analysis and clustering timeline analysis were performed.For the references,the co-citation clustering network analysis and visual map drawing were conducted at the same time.Results The researchers in USA and People's Republic of China published 998 and 527 research papers,and ranked top two for the number of published papers,whereas the Chinese Academy of Sciences contributed the most(80 published papers).The research institutes in England and France had higher score in betweenness centrality of the co-occurrence analysis.Both the clusters analyses of co-cited reference and keywords enrolled 12 clusters.The frequency and co-occurrence analyses on literature keywords shown that"airborne transmission","temperature"and"relative humidity"were more frequent.Conclusions The number of published papers in China and North America was higher than those in other countries,but the level of cross-regional cooperation was relatively lower than those in the institutes form England and Nordic Countries.The current researches focused on the risk assessment for infection caused by virus-carrying aerosols,and the measurement and effective control of aerosols in crowded places is gradually becoming one of the new research interest.