1)CNKI core journalsCNKI核心期刊
英文短句/例句
1.ANALYSIS REPORT OF CHINESE PEER-REVIEW RESEARCH SITUATION-The Literature Research Based on CNKI Core Journals关于中国同行评议研究状况的分析报告——基于CNKI核心期刊的文献研究
2.EPA is a Key Journal in China and embodied by CA.本刊是中文核心期刊、A收录期刊。
3.Chief editors play very important roles in publishing sci-tech periodicals.科技期刊的主编是办好期刊的核心。
4.Comparative Analysis of the Core Journals of China and Chinese Journals Formation;中国期刊方阵与中文核心期刊的比较
5.A Core Journal Perspective on the Regulated Management of Academic Journals: Reflections on The Core Journals and Journal Assessment Written by Mr. Qian Ronggui;从“核心期刊”看学术期刊的规范化管理——钱荣贵著《“核心期刊”与期刊评价》读后
6.The Influence of Choose of Core Periodical on Journals of Science and Technology about Agriculture and Forestry核心期刊评选对农林类科技期刊发展的影响
7.Comparative Analysis on the Evaluation Methods of Core Journals and Statistical Source Journals核心期刊和统计源期刊评价方法的比较分析
8.The Differences and Sameness between Qualitative Evaluating Academic Journal and Evaluating Core Journal学术期刊质量评价与核心期刊评价之异同
9.Definition of Core Journals and Suggestions on Improvement of Core Journal Evaluation关于核心期刊的定义及对完善核心期刊评价的建议
10.Striving for a Top-Quality Academic Journal with Unrelenting Efforts:--Congratulations on the Inclusion of NJA in A Guide to the Core Journals of China再接再励争创精品学术期刊——贺本刊入编《中文核心期刊要目总览》
11.Fault of Journals : Views about the Development of Non-"Core journals";人之错 刊之过——非“核心期刊”类学报发展之思
12.Don t Revolve Around the "Core" in Running Academic Journals--Comment on the Phenomenon of So-Called Core Journals;办学报不能跟着“核心”转——兼谈所谓“核心期刊”现象
13.five periodicals make up the core of their publishing program.五份期刊组成了他们出版计划的核心。
14.Information about core journals authors of P.E.institutes in 2007;体育院校核心期刊2007年论文作者分析
15.Evaluation on China Kernel Scientific Periodicals;中国科技“核心期刊”评定问题研究
16.A New Method of Native Core Journal Selection;中国核心期刊评选的一个本土化方案
17.The Evolution of Library and Information Science Journals in China;我国图书馆学、情报学核心期刊的变迁
18.On Core Periodicals and the Quality of Academic Paper;如何看待“核心期刊”和“论文学术水平”
相关短句/例句
CNKI online periodicalsCNKI入网期刊
3)core journals核心期刊
1.Comparison of the Past Years Chinese Comprehensive Agricultural Core Journals历年综合性农业科学类中文核心期刊比较
4)core periodicals核心期刊
1.Analysis on sci-tech core periodicals evaluation;科技类核心期刊评价的缺憾分析
2.The history,present situation and developing trend of researches on Chinese P.E. core periodicals;中文体育类核心期刊研制工作的历史、现状和发展趋势
5)Core journal核心期刊
1.Bibliometric analysis of papers on research of core journals published in 1997-2007 in China;1997-2006年我国核心期刊研究的文献计量分析
2.Analyses on website services of core journals of natural sciences in China;我国自然科学核心期刊网络服务功能剖析
3.Statistics and analysis of university science journals included in and maintained as core journals;高校自然科学学报入选并保持核心期刊的统计与分析
6)core periodical核心期刊
1.The evolution and influence of the concept of the core periodicals;核心期刊概念的演变及影响
2.Evaluation and Analysis on the Overseas Professional Core Periodicals;我国专业类国外核心期刊的动态评价与分析
3.Thoughts on Awkward Situation of the Core Periodicals Due to Excessive Use;关于核心期刊遭遇尴尬的若干思考
延伸阅读
CN 硝酸纤维素实际上是纤维素的硝酸酯，它是以精制短棉绒为原料，用硝酸、硫酸的混合酸进行酯化，使纤维素中的-OH基酯化成－ONO2的产物。根据纤维素中3个-OH基酯化程度的不同，就可得到不同含氮量的CN，随着酯化程度增大，台氮量升高，三硝酸纤维素的理论含氮量为14．14％。不同含氮量的硝酸纤维素有着不同的溶解度和用途。塑料用的含氮量为10．5-12．3％，胶粘剂和涂料用的为11．5％-12．2％，火药用的为11．8％-13．5％。硝酸纤维素的聚合度n＝100-3500，分子量为16200-875000。 CN为白色或微黄色絮绒状固体，无臭、易燃 、易爆，相对密度1.58-1.65，熔点160-170 ℃，闪点12．78℃，自燃温度170℃，折射率1．51。不溶于水，易溶于酮、酯、醇、醚类溶剂，硝酸纤维素对碱很敏感，容易发生皂化而脱硝。长期在光和热作用下能分解并降低含氮量。硝酸纤维素主要用于配制溶剂型胶桔剂，粘接赛璐珞塑料制品和火药。配制火棉胶。由于硝化纤维素性质很不稳定，易燃易爆，当温度超过40 ℃时能加速分解而发生自燃。含水25％时较安全，因此在贮运时加入30％左右的乙醇或水为湿润剂，以增加稳定性。使用前应将硝酸纤维素的水烘干，要特别注意安全、最好使用水烘箱，如果用电烘箱温控一定要可取，烘箱门不得关死，防止爆炸。中间观察时人不得面对烘箱开门，以防发生意外。 贮存于阴凉、通风的专用库房内，温度不超过30℃，远离火种和热源。
