Molecular and genetic characterizations of mutants have led to a better understanding of many developmental processes in the model system Arabidopsis thaliana. However, the leaf development that is specific to plants ...Molecular and genetic characterizations of mutants have led to a better understanding of many developmental processes in the model system Arabidopsis thaliana. However, the leaf development that is specific to plants has been little studied. With the aim of contributing to the genetic dissection of leaf development, we have performed a large-scare screening for mutants with abnormal leaves. Among a great number of leaf mutants we have generated by T-DNA and transposon tagging and ethylmethae sulfonate (EMS) mutagenesis, four independent mutant lines have been identified and studied genetically. Phenotypes of these mutant lines represent the defects of four novel nuclear genes designated LL1 (LOTUS LEAF 1), LL2 (LOTUS LEAF 2), URO (UPRIGHT ROSETTE), and EIL (ENVIRONT CONDITION INDUCED LESION). The phenotypic analysis indicates that these genes play important roles during leaf development. FOr the further genetic analysis of these genes and the map-based cloning of LL1 and LL2, we have mapped these genes to chromosome regions with an efficient and rapid mapping method.展开更多
In terms of Caratheodory metric and Kobayashi metric, distortion theorems for biholomorphic convex mappings on bounded circular convex domains are given.
【目的】采用文献计量学分析方法,探讨针灸治疗焦虑症的现状趋势和研究热点,旨在为今后的研究提供基础和参考。【方法】通过中国知网期刊全文数据库(CNKI)和科技引文索引(Web of Science,WOS)数据库,搜索从数据库建库至2022年4月期间针...【目的】采用文献计量学分析方法,探讨针灸治疗焦虑症的现状趋势和研究热点,旨在为今后的研究提供基础和参考。【方法】通过中国知网期刊全文数据库(CNKI)和科技引文索引(Web of Science,WOS)数据库,搜索从数据库建库至2022年4月期间针灸治疗焦虑症的相关文献。利用Cite Space和VOS viewer对其发文量、所在国家(地区)和机构、共被引文献、共现关键词、突发关键词以及相关中心度进行分析。【结果】通过计算机检索,分别得到CNKI文献1167篇、WOS文献985篇,年发文量呈现波动上升的趋势。中国(351篇)和成都中医药大学(43篇)分别为最具生产力的国家(地区)和机构,国家合作以中国、美国为中心,但机构之间合作并不紧密。关键词及被引文献分析显示,研究以躯体疾病伴发焦虑为主,抑郁和疼痛是最常被研究的伴随症状。WOS中研究类型以系统评价和随机对照试验(RCT)为主,CNKI则以综述居多,均少见针灸治疗焦虑症相关机制的深入研究。对焦虑患者生活质量的关注可能成为未来针灸治疗焦虑症的研究重点。【结论】采用文献计量学方法对针刺治疗焦虑症的相关文献进行知识图谱分析,有助于研究者确定该领域的现状、热点和前沿趋势,并进一步探索针刺治疗焦虑症的未来研究方向。展开更多
基金supported by a grant from the Chinese Academy of Sciences,KJ951-B1-604 and a National Distinguished Young Scholar Award to Hai HUANG.
文摘Molecular and genetic characterizations of mutants have led to a better understanding of many developmental processes in the model system Arabidopsis thaliana. However, the leaf development that is specific to plants has been little studied. With the aim of contributing to the genetic dissection of leaf development, we have performed a large-scare screening for mutants with abnormal leaves. Among a great number of leaf mutants we have generated by T-DNA and transposon tagging and ethylmethae sulfonate (EMS) mutagenesis, four independent mutant lines have been identified and studied genetically. Phenotypes of these mutant lines represent the defects of four novel nuclear genes designated LL1 (LOTUS LEAF 1), LL2 (LOTUS LEAF 2), URO (UPRIGHT ROSETTE), and EIL (ENVIRONT CONDITION INDUCED LESION). The phenotypic analysis indicates that these genes play important roles during leaf development. FOr the further genetic analysis of these genes and the map-based cloning of LL1 and LL2, we have mapped these genes to chromosome regions with an efficient and rapid mapping method.
文摘In terms of Caratheodory metric and Kobayashi metric, distortion theorems for biholomorphic convex mappings on bounded circular convex domains are given.
文摘【目的】采用文献计量学分析方法,探讨针灸治疗焦虑症的现状趋势和研究热点,旨在为今后的研究提供基础和参考。【方法】通过中国知网期刊全文数据库(CNKI)和科技引文索引(Web of Science,WOS)数据库,搜索从数据库建库至2022年4月期间针灸治疗焦虑症的相关文献。利用Cite Space和VOS viewer对其发文量、所在国家(地区)和机构、共被引文献、共现关键词、突发关键词以及相关中心度进行分析。【结果】通过计算机检索,分别得到CNKI文献1167篇、WOS文献985篇,年发文量呈现波动上升的趋势。中国(351篇)和成都中医药大学(43篇)分别为最具生产力的国家(地区)和机构,国家合作以中国、美国为中心,但机构之间合作并不紧密。关键词及被引文献分析显示,研究以躯体疾病伴发焦虑为主,抑郁和疼痛是最常被研究的伴随症状。WOS中研究类型以系统评价和随机对照试验(RCT)为主,CNKI则以综述居多,均少见针灸治疗焦虑症相关机制的深入研究。对焦虑患者生活质量的关注可能成为未来针灸治疗焦虑症的研究重点。【结论】采用文献计量学方法对针刺治疗焦虑症的相关文献进行知识图谱分析,有助于研究者确定该领域的现状、热点和前沿趋势,并进一步探索针刺治疗焦虑症的未来研究方向。
