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   3468篇
  免费   417篇
教育   3397篇
科学研究   13篇
各国文化   97篇
体育   70篇
文化理论   7篇
信息传播   301篇
  2023年   5篇
  2022年   6篇
  2021年   37篇
  2020年   61篇
  2019年   135篇
  2018年   141篇
  2017年   170篇
  2016年   122篇
  2015年   169篇
  2014年   192篇
  2013年   1120篇
  2012年   141篇
  2011年   161篇
  2010年   171篇
  2009年   135篇
  2008年   153篇
  2007年   113篇
  2006年   92篇
  2005年   87篇
  2004年   79篇
  2003年   40篇
  2002年   35篇
  2001年   40篇
  2000年   43篇
  1999年   41篇
  1998年   24篇
  1997年   23篇
  1996年   31篇
  1995年   37篇
  1994年   21篇
  1993年   21篇
  1992年   26篇
  1991年   22篇
  1990年   34篇
  1989年   17篇
  1988年   18篇
  1987年   19篇
  1986年   10篇
  1985年   14篇
  1984年   10篇
  1983年   9篇
  1982年   11篇
  1981年   7篇
  1980年   7篇
  1979年   5篇
  1978年   5篇
  1977年   3篇
  1974年   4篇
  1970年   2篇
  1969年   6篇
排序方式: 共有3885条查询结果,搜索用时 31 毫秒
1.
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   
2.
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   
3.
4.
5.
Review article     
Ducellier, A., Kaplan, M., Martin, Bernadette, avec la collaboration de Françoise Micheau. Le Moyen Âge en Orient. Byzance et l'Islam. Des Barbares aux Ottomans. Paris: Hachette Histoire Université, 1990.  相似文献   
6.
Book reviews     
Association of Research Libraries  相似文献   
7.
8.
9.
10.
Field work and structured interviews with 139 foreign sojourners in India were analyzed to describe the socialization of aliens into their role. Attitude scales measuring favorability toward the host country and people were also examined in relation to the respondent's occupational status and elapsed time in India. The results from the field work and interviews suggest that the privileges and high status accorded many Western visitors may contribute to the visitors' derogation of their hosts, a process which is often subtle but unmistakable. The visitors appear to become socialized into the world of aliens rather than the world of their hosts. The higher the visitor's status and the longer the elapsed time in India, the more pronounced these patterns appear. While the correlational nature of the study makes it impossible to determine whether persons with initially unfavorable attitudes are selected into the high status positions or whether the positions themselves create such attitudes, it appears reasonable to conclude that there would be less derogation and alienation if the lures of status and money were removed; persons would be neither selected nor influenced by such factors.  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