目的:为了探究数字化教学的资源以及数字化教学发展的趋势。方法:以1998~2023年三大中文数据库的CSSCI (中文社会科学引文索引)期刊为样本,通过CiteSpace 5.7.R5和VOSviewer 1.6.20两种软件进行可视化分析。结果:研究结果表明数字化教...目的:为了探究数字化教学的资源以及数字化教学发展的趋势。方法:以1998~2023年三大中文数据库的CSSCI (中文社会科学引文索引)期刊为样本,通过CiteSpace 5.7.R5和VOSviewer 1.6.20两种软件进行可视化分析。结果:研究结果表明数字化教学的发展分为三个阶段,1998~2004主题是“数字化的形式”,2004~2020年以“数字化教学资源”为主题,2020年后围绕“数字化教学的发展”的主题。三个阶段循序渐进,不断推进数字化教学的发展。当前,在线教学、数字素养、数字化转型等已经成为研究热点,且“数字化转型”研究热点在未来将受到持续关注,同时数字化教学的发展朝着教育公平方向发展。结论:目前,数字化教学发展正处于数字化教学模式中数字化转型的阶段,教育数字化转型是教育教学活动与现代数字技术的有机融合,为教育教学焕发新活力提供新动能,推动良好教育生态的构建,数字化转型是基础教育跃升优质发展之关键路径,基础教育作为国民素养培育之基石,其数字化转型进程备受国家瞩目与重视。Objective: To explore the resources of digital teaching and the development trend of digital teaching. Methods: Using CSSCI (Chinese Social Sciences Citation Index) journals of three major Chinese databases from 1998 to 2023 as samples, CiteSpace 5.7.R5 and VOSviewer 1.6.20 were used for visualization analysis. Results: The research results show that the development of digital teaching can be divided into three stages, the theme of 1998~2004 is “digital form”, the theme of 2004~2020 is “digital teaching resources”, and the theme of “development of digital teaching” after 2020. Three stages step by step, and constantly promote the development of digital teaching. At present, online teaching, digital literacy, and digital transformation have become research hotspots, and the research hotspot of “digital transformation” will receive continuous attention in the future, while the development of digital teaching is developing in the direction of educational equity. Conclusion: At present, the development of digital teaching is in the stage of digital transformation in the digital teaching mode. The digital transformation of education is the organic integration of education and teaching activities and modern digital technology, which provides new momentum for education and teaching to glow with new vitality and promote the construction of a good education ecology. Digital transformation is the key path for the high-quality development of basic education. Basic education is the cornerstone of national literacy cultivation, and its digital transformation process has attracted national attention and attention.展开更多
建立检测面膜中非法添加6种糖皮质激素的HPLC法。采用Boston Green ODS(4.6×250 mm, 5μm)色谱柱,流动相为0.1%乙酸溶液-乙腈梯度洗脱,流速为1.0 mL/min,检测波长为240 nm,柱温为25℃,进样量为10μL。研究表明6种糖皮质激素在各自...建立检测面膜中非法添加6种糖皮质激素的HPLC法。采用Boston Green ODS(4.6×250 mm, 5μm)色谱柱,流动相为0.1%乙酸溶液-乙腈梯度洗脱,流速为1.0 mL/min,检测波长为240 nm,柱温为25℃,进样量为10μL。研究表明6种糖皮质激素在各自浓度范围内线性关系良好,相关系数均大于0.9995,平均回收率为86.0%~108.8%。市售随机采样29批次,均未检出6种糖皮质激素成分。该方法简便、快速、准确,可用于面膜中非法添加6种糖皮质激素的检测。展开更多
文摘目的:为了探究数字化教学的资源以及数字化教学发展的趋势。方法:以1998~2023年三大中文数据库的CSSCI (中文社会科学引文索引)期刊为样本,通过CiteSpace 5.7.R5和VOSviewer 1.6.20两种软件进行可视化分析。结果:研究结果表明数字化教学的发展分为三个阶段,1998~2004主题是“数字化的形式”,2004~2020年以“数字化教学资源”为主题,2020年后围绕“数字化教学的发展”的主题。三个阶段循序渐进,不断推进数字化教学的发展。当前,在线教学、数字素养、数字化转型等已经成为研究热点,且“数字化转型”研究热点在未来将受到持续关注,同时数字化教学的发展朝着教育公平方向发展。结论:目前,数字化教学发展正处于数字化教学模式中数字化转型的阶段,教育数字化转型是教育教学活动与现代数字技术的有机融合,为教育教学焕发新活力提供新动能,推动良好教育生态的构建,数字化转型是基础教育跃升优质发展之关键路径,基础教育作为国民素养培育之基石,其数字化转型进程备受国家瞩目与重视。Objective: To explore the resources of digital teaching and the development trend of digital teaching. Methods: Using CSSCI (Chinese Social Sciences Citation Index) journals of three major Chinese databases from 1998 to 2023 as samples, CiteSpace 5.7.R5 and VOSviewer 1.6.20 were used for visualization analysis. Results: The research results show that the development of digital teaching can be divided into three stages, the theme of 1998~2004 is “digital form”, the theme of 2004~2020 is “digital teaching resources”, and the theme of “development of digital teaching” after 2020. Three stages step by step, and constantly promote the development of digital teaching. At present, online teaching, digital literacy, and digital transformation have become research hotspots, and the research hotspot of “digital transformation” will receive continuous attention in the future, while the development of digital teaching is developing in the direction of educational equity. Conclusion: At present, the development of digital teaching is in the stage of digital transformation in the digital teaching mode. The digital transformation of education is the organic integration of education and teaching activities and modern digital technology, which provides new momentum for education and teaching to glow with new vitality and promote the construction of a good education ecology. Digital transformation is the key path for the high-quality development of basic education. Basic education is the cornerstone of national literacy cultivation, and its digital transformation process has attracted national attention and attention.
文摘建立检测面膜中非法添加6种糖皮质激素的HPLC法。采用Boston Green ODS(4.6×250 mm, 5μm)色谱柱,流动相为0.1%乙酸溶液-乙腈梯度洗脱,流速为1.0 mL/min,检测波长为240 nm,柱温为25℃,进样量为10μL。研究表明6种糖皮质激素在各自浓度范围内线性关系良好,相关系数均大于0.9995,平均回收率为86.0%~108.8%。市售随机采样29批次,均未检出6种糖皮质激素成分。该方法简便、快速、准确,可用于面膜中非法添加6种糖皮质激素的检测。