期刊文献+
共找到4篇文章
< 1 >
每页显示 20 50 100
A Statistical Analysis on Papers and Authors in Wuhan University Journal of Natural Sciences in 2003
1
作者 HUMin 《Wuhan University Journal of Natural Sciences》 CAS 2004年第6期983-986,共4页
The author of this article counts and analyzes the papers and authors printed in 2003 Wuhan University Journal of Natural Sciences by means of bibliometric statistical methods, of which the characteristics of papers a... The author of this article counts and analyzes the papers and authors printed in 2003 Wuhan University Journal of Natural Sciences by means of bibliometric statistical methods, of which the characteristics of papers and authors are expounded. The result shows that the ratio of reprinting of this journal has been increased and the areas where the authors come from and their organization scattered in the whole world are widened as well, which implies a better-known fame of the journal. Key words Wuhan University Journal of Natural Sciences - papers analysis - authors analysis - statistical analysis CLC number G 353.1 Biography: HU Min(1961-), famale, Associate professor, research direction; editing science and biochemistry. 展开更多
关键词 Wuhan University Journal of Natural Sciences papers analysis authors analysis statistical analysis
下载PDF
Analysis of authors of Chinese Journal of Orthopaedics from 2005 to 2009
2
作者 杨华 《外科研究与新技术》 2011年第2期127-128,共2页
Objective To investigate the authors,the institution and endemic distribution of these authors of Chinese Journal of Orthopaedics,and understand the current situation and problems in the field of Orthopaedics.Methods ... Objective To investigate the authors,the institution and endemic distribution of these authors of Chinese Journal of Orthopaedics,and understand the current situation and problems in the field of Orthopaedics.Methods The authors,the 展开更多
关键词 analysis of authors of Chinese Journal of Orthopaedics from 2005 to 2009
下载PDF
Analysis of Renewable Energy Research Hotspots and Trends Based on Bibliometric and Patent Survey
3
作者 Yidan Wang Jiaxing Wang +2 位作者 Jingli Fan Yuhui Xia Xian Zhang 《Journal of Economic Science Research》 2020年第2期24-30,共7页
In recent years,renewable energy has taken on an increasingly important role as a result of the depletion of traditional fossil fuels and the pressure of climate change.Due to the advantages of clean energy production... In recent years,renewable energy has taken on an increasingly important role as a result of the depletion of traditional fossil fuels and the pressure of climate change.Due to the advantages of clean energy production and wide availability,research on renewable energy has increased worldwide.We collected data from the Web of Science and the Derwent Innovations Index to analyze research trends in the field of renewable energy.It was found that the number of research achievements in this field has developed rapidly worldwide since 2005.The United States ranks first in the quantity and quality of literature and fourth in the number of authorized patents.China ranks second and first regarding the quantity of literature and authorized patents,respectively.Biomass energy,wind energy,and solar energy are trending research topics in various stages of development.China has maintained close cooperation with the United States,the United Kingdom,Australia,and other countries. 展开更多
关键词 Renewable energy Technology transfer BIBLIOMETRICS authorized patent analysis Situational analysis
下载PDF
胃蝇属三龄幼虫形态特征及行为的种间和种内关系分析 被引量:3
4
作者 刘善辉 胡德夫 +1 位作者 李凯 范晓泽 《中国兽医杂志》 CAS 北大核心 2018年第6期3-7,共5页
以胃蝇属6个种(黑腹胃蝇、黑角胃蝇、鼻胃蝇、肠胃蝇、红尾胃蝇、裸节胃蝇)三龄幼虫为研究对象,借助于2010年9月-2016年9月期间获取的数据,研究其种间和种内形态学特征及行为方式的遗传差异,为研究其适应宿主体内寄生生活机制提供依据... 以胃蝇属6个种(黑腹胃蝇、黑角胃蝇、鼻胃蝇、肠胃蝇、红尾胃蝇、裸节胃蝇)三龄幼虫为研究对象,借助于2010年9月-2016年9月期间获取的数据,研究其种间和种内形态学特征及行为方式的遗传差异,为研究其适应宿主体内寄生生活机制提供依据。结果表明,胃蝇三龄幼虫种间在体长、体宽、体重、体长/体宽和蠕动频率、爬行速度、入土深度及入土时间上均表达显著水平,且三龄幼虫形态种间和种内都存在着丰富的遗传变异。胃蝇属三龄幼虫种间变异率入土深度(25. 25%)>爬行速度(25. 09%)>蠕动频率(24. 60%)>体重(22. 75%)>入土时间(20. 75%)>体长/体宽(19. 16%)>三龄幼虫体宽(13. 95%)>三龄幼虫体长(13. 03%)。在形态及特征与行为方式相关性上,三龄幼虫体长与爬行速度和入土深度分别呈显著负相关和极显著负相关;体宽与蠕动频率呈显著正相关;体长/体宽与入土时间呈显著正相关,与蠕动频率和爬行速度分别呈极显著负相关和显著负相关关系;体重与爬行速度及入土深度分别呈极显著负相关和显著负相关关系。根据形态特征和行为方式指标将胃蝇属6个种划分为3类,肠胃蝇、红尾胃蝇和裸节胃蝇三支聚集成为一簇,黑腹胃蝇分支单独形成一簇,鼻胃蝇和黑角胃蝇分支形成第三簇。 展开更多
关键词 胃蝇属 形态特征 表观遗传 行为方式 聚类分析
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部