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   5949篇
  免费   460篇
  国内免费   2篇
教育   5235篇
科学研究   159篇
各国文化   115篇
体育   243篇
综合类   1篇
文化理论   17篇
信息传播   641篇
  2023年   20篇
  2022年   24篇
  2021年   61篇
  2020年   109篇
  2019年   243篇
  2018年   248篇
  2017年   289篇
  2016年   212篇
  2015年   223篇
  2014年   292篇
  2013年   1661篇
  2012年   205篇
  2011年   228篇
  2010年   208篇
  2009年   190篇
  2008年   253篇
  2007年   158篇
  2006年   165篇
  2005年   137篇
  2004年   139篇
  2003年   92篇
  2002年   72篇
  2001年   80篇
  2000年   92篇
  1999年   76篇
  1998年   54篇
  1997年   53篇
  1996年   56篇
  1995年   51篇
  1994年   57篇
  1993年   49篇
  1992年   48篇
  1991年   30篇
  1990年   48篇
  1989年   34篇
  1988年   34篇
  1987年   29篇
  1986年   27篇
  1985年   29篇
  1984年   28篇
  1983年   24篇
  1982年   18篇
  1981年   18篇
  1980年   15篇
  1979年   18篇
  1978年   11篇
  1977年   13篇
  1974年   12篇
  1972年   9篇
  1926年   10篇
排序方式: 共有6411条查询结果,搜索用时 250 毫秒
1.
Working memory training improves children's cognitive performance on untrained tasks; however, little is known about the underlying neural mechanisms. This was investigated in 32 typically developing children aged 10–14 years (19 girls and 13 boys) using a randomized controlled design and multi-modal magnetic resonance imaging (Devon, UK; 2015–2016). Training improved working memory performance and increased intrinsic functional connectivity between the bilateral intraparietal sulci. Furthermore, improvements in working memory were associated with greater recruitment of the left middle frontal gyrus on a complex span task. Repeated engagement of fronto-parietal regions during training may increase their activity and functional connectivity over time, affording greater working memory performance. The plausibility of generalizable cognitive benefits from a neurobiological perspective and implications for neurodevelopmental theory are discussed.  相似文献   
2.
3.
Abstract

Carnosine was originally discovered in skeletal muscle, where it exists in larger amounts than in other tissues. The majority of research into the physiological roles of carnosine have been conducted on skeletal muscle. Given this and the potential for muscle carnosine content to be increased with supplementation, there is now a large body of research examining the ergogenic effects (or otherwise) of carnosine. More recent research, however, points towards a potential for carnosine to exert a wider range of physiological effects in other tissues, including the brain, heart, pancreas, kidney and cancer cells. Taken together, this is suggestive of a potential for carnosine to have therapeutic benefits in health and disease, although this is by no means without complication. Herein, we will provide a review of the current literature relating to the potential therapeutic effects of carnosine in health and disease.  相似文献   
4.
5.
6.
7.
8.
The study examined the social‐information‐processing skills of kindergarten children with developmental learning disabilities (LD) utilizing Crick and Dodge's (1994) model of children's social adjustment as a theoretical framework. Participants consisted of 20 kindergarten children with developmental LD who attended three integrated kindergartens and 20 children without developmental LD from the same kindergartens. Participants were assessed on social‐information‐processing skills, feelings of loneliness, sense of coherence, and teachers' ratings of behavioral problems and positive resources. The results indicated that girls with developmental LD performed significantly lower on two information‐processing steps—the response decision and the enactment steps—than did girls without LD. Such differences were not found for boys. The results also showed that the social‐information‐processing skills of children with developmental LD were correlated with teachers' ratings.  相似文献   
9.
10.
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