【目的】分析中国肿瘤学论文的发表现状,探讨中国肿瘤学稿件外流现象与相关对策。【方法】利用Web of Science数据库,对2013—2017年中国作者发表的肿瘤学论文及发表期刊进行分析。【结果】我国肿瘤学英文论文发表平台有限,大部分论文...【目的】分析中国肿瘤学论文的发表现状,探讨中国肿瘤学稿件外流现象与相关对策。【方法】利用Web of Science数据库,对2013—2017年中国作者发表的肿瘤学论文及发表期刊进行分析。【结果】我国肿瘤学英文论文发表平台有限,大部分论文发表于国外期刊。中国作者倾向于选择发文量大、中国作者论文占比高、影响因子≤3的期刊,论文影响力有限。发表于国外SCI收录期刊的中国肿瘤学研究论文数量逐年提高,而中国科学引文数据库收录期刊发表的我国肿瘤学研究论文总量却逐年降低。【结论】中国高质量肿瘤学稿件外流现象较严重。我国肿瘤学期刊尚有较大发展空间,应在采取各种有效措施提高自身办刊效率基础上,扩大宣传范围,出台配套政策,以鼓励中国作者向本国期刊投稿。展开更多
Many technological applications require templates with nanoscale patterns.Block copolymer self-assembly is a method of choice for obtaining a large variety of such patterns,with greatest flexibility achieved when comb...Many technological applications require templates with nanoscale patterns.Block copolymer self-assembly is a method of choice for obtaining a large variety of such patterns,with greatest flexibility achieved when combined with a supramolecular approach.One of the ways to fabricate block copolymer templates is the Langmuir-Blodgett (LB) technique.Here,we briefly summarize recent work with LB films of polystyrene-poly(4-vinyl pyridine) (PS-P4VP) mixed with 3-n-pentade cylphenol (PDP),illustrating the different types of patterns possible and the principles governing them.One interesting pattern that can be easily achieved with this system is the so-called "nanostrand network",which,when used as a template for gold deposition,can produce double striped lines of gold.Here,we show how this pattern can be modified by acetone swelling to give rise to gold monolayer ribbons with internal structure.The results also suggest new insights into the early stages of morphology formation at the air/water interface.展开更多
文摘【目的】分析中国肿瘤学论文的发表现状,探讨中国肿瘤学稿件外流现象与相关对策。【方法】利用Web of Science数据库,对2013—2017年中国作者发表的肿瘤学论文及发表期刊进行分析。【结果】我国肿瘤学英文论文发表平台有限,大部分论文发表于国外期刊。中国作者倾向于选择发文量大、中国作者论文占比高、影响因子≤3的期刊,论文影响力有限。发表于国外SCI收录期刊的中国肿瘤学研究论文数量逐年提高,而中国科学引文数据库收录期刊发表的我国肿瘤学研究论文总量却逐年降低。【结论】中国高质量肿瘤学稿件外流现象较严重。我国肿瘤学期刊尚有较大发展空间,应在采取各种有效措施提高自身办刊效率基础上,扩大宣传范围,出台配套政策,以鼓励中国作者向本国期刊投稿。
基金supported by the Natural Sciences and Engineering Council of Canada (NSERC)the Fonds de recherches du Québec-Nature et Technologies (FQRNT)
文摘Many technological applications require templates with nanoscale patterns.Block copolymer self-assembly is a method of choice for obtaining a large variety of such patterns,with greatest flexibility achieved when combined with a supramolecular approach.One of the ways to fabricate block copolymer templates is the Langmuir-Blodgett (LB) technique.Here,we briefly summarize recent work with LB films of polystyrene-poly(4-vinyl pyridine) (PS-P4VP) mixed with 3-n-pentade cylphenol (PDP),illustrating the different types of patterns possible and the principles governing them.One interesting pattern that can be easily achieved with this system is the so-called "nanostrand network",which,when used as a template for gold deposition,can produce double striped lines of gold.Here,we show how this pattern can be modified by acetone swelling to give rise to gold monolayer ribbons with internal structure.The results also suggest new insights into the early stages of morphology formation at the air/water interface.
