The present study introduces a screw-pressing charging method to tackle deficiencies in automation and charge uniformity during the melt-casting of polymer-based energetic materials.To ensure the safety of the experim...The present study introduces a screw-pressing charging method to tackle deficiencies in automation and charge uniformity during the melt-casting of polymer-based energetic materials.To ensure the safety of the experiments,this study used inert materials with similar physical properties to partially substitute for the actual energetic components in the preparation of simulant materials.By thoroughly analyzing slurry physical properties,a simulation framework and an extensive performance evaluation method were developed.Such tools guide the design of the structure and configuration of process parameters.Results demonstrate that employing the Pin element significantly enhances radial mixing within the screw,minimizes temperature variations in the slurry,and improves both efficiency and safety in the mixing process.Further,adjustments such as widening the cone angle of the barrel,modifying the solid content of the slurry,and varying the speed of the screw can optimize the mechanical and thermal coupling in the flow field.These adjustments promote higher-quality slurry and create a safer production environment for the extrusion process.展开更多
为了更全面地了解国内外茶饮料的热点内容和研究进展,本文以Web of Science核心合集数据库为数据源,采用可视化数据分析软件CiteSpace v 6.1.6R对2002~2022年WOS收录的1247篇英文文献的年度发文量、作者共现与共被引、研究机构、国家发...为了更全面地了解国内外茶饮料的热点内容和研究进展,本文以Web of Science核心合集数据库为数据源,采用可视化数据分析软件CiteSpace v 6.1.6R对2002~2022年WOS收录的1247篇英文文献的年度发文量、作者共现与共被引、研究机构、国家发文量、期刊和研究热点进行可视化分析。分析结果表明,国内外对茶饮料研究的热度持续升高,年度发文量呈现逐年上升的趋势。发文数量大于4篇的核心作者584人,占总作者人数的82.4%。机构发文量的主力来自中国高校,其中发文量第一的机构是安徽农林大学。中国是发文量最大的国家,其次是美国、日本。刊载量较大的期刊主要集中在农业和食品化学领域,Journal of Agricultural and Food Chemistry是共被引频次最高的期刊,共被引988次。“caffeine”“acid”“catechin”是茶饮料研究的高频关键词,研究热点主要集中于茶饮料中活性物质的检测和提取、发酵茶、抗氧化和抗菌活性。综上所述,有关茶饮料的研究仍处于上升态势,但现有研究存在作者机构间合作不足、研究领域较为局限、研究方法趋同等问题,该领域学者应当加强多方面合作交流,拓宽研究广度与深度,共同推进该领域研究发展。本研究为后期从整体上更加深入了解全球茶饮料研究现状提供借鉴思路。展开更多
基金financially supported by the Fundamental Research Funds for the Central Universities(Grant No.30923011018)。
文摘The present study introduces a screw-pressing charging method to tackle deficiencies in automation and charge uniformity during the melt-casting of polymer-based energetic materials.To ensure the safety of the experiments,this study used inert materials with similar physical properties to partially substitute for the actual energetic components in the preparation of simulant materials.By thoroughly analyzing slurry physical properties,a simulation framework and an extensive performance evaluation method were developed.Such tools guide the design of the structure and configuration of process parameters.Results demonstrate that employing the Pin element significantly enhances radial mixing within the screw,minimizes temperature variations in the slurry,and improves both efficiency and safety in the mixing process.Further,adjustments such as widening the cone angle of the barrel,modifying the solid content of the slurry,and varying the speed of the screw can optimize the mechanical and thermal coupling in the flow field.These adjustments promote higher-quality slurry and create a safer production environment for the extrusion process.
文摘为了更全面地了解国内外茶饮料的热点内容和研究进展,本文以Web of Science核心合集数据库为数据源,采用可视化数据分析软件CiteSpace v 6.1.6R对2002~2022年WOS收录的1247篇英文文献的年度发文量、作者共现与共被引、研究机构、国家发文量、期刊和研究热点进行可视化分析。分析结果表明,国内外对茶饮料研究的热度持续升高,年度发文量呈现逐年上升的趋势。发文数量大于4篇的核心作者584人,占总作者人数的82.4%。机构发文量的主力来自中国高校,其中发文量第一的机构是安徽农林大学。中国是发文量最大的国家,其次是美国、日本。刊载量较大的期刊主要集中在农业和食品化学领域,Journal of Agricultural and Food Chemistry是共被引频次最高的期刊,共被引988次。“caffeine”“acid”“catechin”是茶饮料研究的高频关键词,研究热点主要集中于茶饮料中活性物质的检测和提取、发酵茶、抗氧化和抗菌活性。综上所述,有关茶饮料的研究仍处于上升态势,但现有研究存在作者机构间合作不足、研究领域较为局限、研究方法趋同等问题,该领域学者应当加强多方面合作交流,拓宽研究广度与深度,共同推进该领域研究发展。本研究为后期从整体上更加深入了解全球茶饮料研究现状提供借鉴思路。
