首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1424篇
  免费   53篇
  国内免费   25篇
电工技术   19篇
技术理论   1篇
综合类   129篇
化学工业   131篇
金属工艺   28篇
机械仪表   51篇
建筑科学   235篇
矿业工程   25篇
能源动力   24篇
轻工业   68篇
水利工程   27篇
石油天然气   45篇
武器工业   1篇
无线电   112篇
一般工业技术   99篇
冶金工业   114篇
原子能技术   11篇
自动化技术   382篇
  2024年   6篇
  2023年   12篇
  2022年   14篇
  2021年   33篇
  2020年   61篇
  2019年   71篇
  2018年   35篇
  2017年   31篇
  2016年   27篇
  2015年   44篇
  2014年   66篇
  2013年   64篇
  2012年   62篇
  2011年   93篇
  2010年   96篇
  2009年   66篇
  2008年   74篇
  2007年   58篇
  2006年   57篇
  2005年   63篇
  2004年   49篇
  2003年   45篇
  2002年   50篇
  2001年   34篇
  2000年   33篇
  1999年   31篇
  1998年   18篇
  1997年   8篇
  1996年   11篇
  1995年   16篇
  1994年   17篇
  1993年   8篇
  1992年   7篇
  1991年   12篇
  1990年   7篇
  1989年   5篇
  1987年   4篇
  1986年   4篇
  1985年   13篇
  1984年   13篇
  1983年   11篇
  1981年   17篇
  1980年   6篇
  1977年   4篇
  1975年   3篇
  1969年   5篇
  1968年   4篇
  1965年   4篇
  1963年   3篇
  1954年   3篇
排序方式: 共有1502条查询结果,搜索用时 0 毫秒
1.
《Planning》2015,(3)
为了培养青年医师运用医学科普语言传播医学知识的能力,向社会提供更优质、可及的健康知识,改善医患关系,促进社会和谐;同时出于向社区、媒体推送一批优秀青年医学科普人才的考虑,本文在总结北京协和医院培养青年医务人员医学科普能力经验的基础上,尝试构建一套适合大型公立医院(尤其是教学医院)培养青年医务人员医学科普能力的新模式——“科普训练营”。本文旨在系统介绍该模式的产生背景、实践经验及初期效果,阐释实施后的重要意义,及实施过程中的挑战与应对策略。  相似文献   
2.
胡俊红 《包装工程》2002,23(3):109-110
艺术与科学的问题一直是设计界普遍关注的问题之一。技术与艺术的分离与结合,推动了设计的发展,但设计最终必将走向科学与艺术的结合之路。  相似文献   
3.
Presents the 2003 American Psychological Foundation's Gold Medal Award for Life Achievement in the Science of Psychology, which was presented to Robert Rosenthal. A biography of Rosenthal is provided, along with a selected bibliography and the text of the award citation: "For outstanding scientific contributions that have had a profound influence on research methods, empirical investigations, theory, and applications. Robert Rosenthal's seminal research on interpersonal expectancy inspired hundreds of studies with applications within and beyond psychology. His amplification of experimenter- and subject-related artifacts and his insights about ethical issues have improved the way that research is conducted. His statistical contributions are classic and wide ranging, including his body of work on meta-analysis and contrast analysis and his formulation of valuable procedures, such as the binomial effect-size display and counternull statistics. An exceptional scientist, teacher, mentor, and author, Rosenthal, with his generous and brilliant touch, has shaped the lives and work of countless others." (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
4.
Why is science difficult to learn? Things are seldom what they seem   总被引:9,自引:0,他引:9  
Abstract The difficulties of learning science are related to the nature of science itself and to the methods by which science is customarily taught without regard to what is known about children's learning. An information processing model is proposed to guide thinking and research in this area.  相似文献   
5.
Data-logging: effects on practical science   总被引:2,自引:0,他引:2  
Abstract This paper describes an investigation into the processes and effects of using electronic data-logging in practical science. A pilot study of classical laboratory work in schools was compared with similar tasks performed with data-logging systems. A more detailed exploration of pupils' performance was then conducted through an extensive series of observations in a range of secondary schools. The results reinforce previous indications of the potential benefits of data-logging, but such benefits must be viewed in the curriculum context of the type of measurement activity and the pedagogical context of teaching and learning objectives. The paper concludes with a discussion of the latter issues.  相似文献   
6.
Abstract This paper outlines the work of the Conceptual Change in Science project, funded as part of the ESRC InTER programme. The aims of this research project are to clarify and describe the process of change in learners' conceptual understandings of natural phenomena. The domain of reasoning selected for study is that of mechanics. Computer software which may be useful in exploring and developing pupils' reasoning and promoting conceptual change in this domain is being developed and evaluated. The group that is carrying out the research is based at the Universities of Leeds, Glasgow and the Open University.  相似文献   
7.
Presents a collection of abstracts from the 2007 Canadian Society for Brain, Behaviour and Cognitive Science (CSBBCS) Annual Meeting. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
8.
In this report, the scientific productivity of Year 2006 of chemical engineering professionals in Taiwan was analyzed carefully with information retrieved from the database of the ISI Web of Science. The distributions of number of authors with x publication versus the number of publication x follows a general power-law trend, which coincidently comply with the Pareto distribution. The power-law indices found ranges from −1.64 to −2.22, which is consistent with values reported in the literature investigated for periods of 1907–1916 and 1969–2004.  相似文献   
9.
徐爱华 《微型电脑应用》2012,28(8):15-17,21
运用复杂网络理论的基本原理和有关方法,对理工医文等学科、专业之间的合作规律和人员合作方式进行探讨,以某高校2005-2010年医工合作情况作为实例展开研究,采用5年的合作数据作了计算分析,研究了高校内部理工医文开展学科交叉工作的特点及其运行情况、医工交叉合作中存在问题,客观分析其原因,提出了解决的办法,为今后开展高校系统的理工医文交叉合作,建设电子化交叉平台.  相似文献   
10.
For biological imaging using electron microscopy (EM), the use of room-temperature ionic liquids (RTILs) has been proposed as an alternative to traditional lengthy preparation methods. With their low vapor pressures and conductivity, RTILs can be applied onto hard-to-image soft and/or wet samples without dehydration – allowing for a more representative, hydrated state of material and opening the possibility for visualization of in situ physiological processes using conventional EM systems. However, RTILs have yet to be utilized to their full potential by microscopists and microbiologists alike. To this end, this review aims to provide a comprehensive summary of biological applications of RTILs for EM to bridge the RTIL, in situ microscopy, and biological communities. We outline future research avenues for the use of RTILs for the EM observation of biological samples, notably i) RTIL selection and optimization, ii) applications for live cell processes and iii) electron beam and ionic liquid interaction studies.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号