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   4350篇
  免费   447篇
  国内免费   1篇
教育   4134篇
科学研究   52篇
各国文化   109篇
体育   108篇
文化理论   8篇
信息传播   387篇
  2023年   11篇
  2022年   12篇
  2021年   56篇
  2020年   82篇
  2019年   159篇
  2018年   189篇
  2017年   226篇
  2016年   161篇
  2015年   209篇
  2014年   215篇
  2013年   1293篇
  2012年   159篇
  2011年   195篇
  2010年   186篇
  2009年   153篇
  2008年   186篇
  2007年   119篇
  2006年   112篇
  2005年   98篇
  2004年   101篇
  2003年   45篇
  2002年   59篇
  2001年   66篇
  2000年   52篇
  1999年   46篇
  1998年   35篇
  1997年   37篇
  1996年   46篇
  1995年   44篇
  1994年   30篇
  1993年   33篇
  1992年   31篇
  1991年   27篇
  1990年   44篇
  1989年   19篇
  1988年   26篇
  1987年   32篇
  1986年   21篇
  1985年   18篇
  1984年   15篇
  1983年   16篇
  1982年   18篇
  1981年   14篇
  1980年   12篇
  1979年   9篇
  1978年   14篇
  1977年   7篇
  1974年   7篇
  1971年   6篇
  1969年   7篇
排序方式: 共有4798条查询结果,搜索用时 31 毫秒
101.
The KAIT (Kaufman Adolescent and Adult Intelligence Test) is a relatively new test of intelligence. This paper explores its use in a southwestern university with three different student groups. The results are reported and implications noted.  相似文献   
102.
103.
104.
105.
106.
107.
108.
This study investigated the validity and reliability of the GymAware PowerTool (GPT). Thirteen resistance trained participants completed three visits, consisting of three repetitions of free-weight back squat, bench press, deadlift (80% one repetition maximum), and countermovement jump. Bar displacement, peak and mean velocity, peak and mean force, and jump height were calculated using the GPT, a three-dimensional motion capture system (Motion Analysis Corporation; 150 Hz), and a force plate (Kistler; 1500 Hz). Least products regression were used to compare agreeability between devices. A within-trial one-way ANOVA, typical error (TE; %), and smallest worthwhile change (SWC) were used to assess reliability. Regression analysis resulted in R2 values of >0.85 for all variables excluding deadlift mean velocity (R2 = 0.54–0.69). Significant differences were observed between visits 3-2 for bench press bar displacement (0.395 ± 0.055 m; 0.383 ± 0.053 m), and deadlift bar displacement (0.557 ± 0.034 m; 0.568 ± 0.034 m). No other significant differences were found. Low to moderate TE (0.6–8.8%) were found for all variables, with SWC ranging 1.7–7.4%. The data provides evidence that the GPT can be used to measure kinetic and kinematic outputs, however, care should be taken when monitoring deadlift performance.  相似文献   
109.
According to its foundation myth, association football was introduced to Ireland when one man, John McAlery, personally organised an exhibition match between two Scottish teams in Belfast in 1878 and went on to form the first Irish association club in 1879 and the Irish Football Association in 1880. Based on new research, this article seeks to revise this traditional account, by presenting evidence of earlier association matches, including one in 1875: the earliest recorded association match thus far discovered. It also uses primary sources and a critical re-examination of secondary sources to re-evaluate the role of McAlery, and suggests that others ought also to be credited for the efforts that were made to establish association football in Ireland from the mid-1870s. The article also considers, but dismisses, other extant claims of early association football in Ireland, and, taking stock of recent scholarship, points to the existence of other more informal, less organised and less successful processes of diffusion in Ireland, prior to and contemporaneous to, but independent of, that which was ultimately successful in Ulster.  相似文献   
110.
Purpose: There is a paucity of research investigating the expression of mitogen-activated protein kinases (MAPK) in chronically trained (CT) athletes. Thus, it is unclear how MAPK may contribute to performance and muscle adaptation in CT subjects. The purpose of this study was to determine MAPK total protein, and phosphorylated expression of extracellular signal-regulated kinases 1 and 2 (ERK1/2), c-Jun N-terminal kinase (JNK), and p38-MAPK (p38) between untrained, and chronically trained runners. Methods: Tissue samples were analysed from sedentary (SED; n?=?5) controls and chronically trained runners (CT; n?=?5). Resting muscle biopsy samples were analysed for total-MAPK – and ratio of phosphorylated/total (p-MAPK) – ERK1/2, JNK, and p38-MAPK via western blotting. Mann–Whitney U tests and effect sizes were utilized to determine differences in total MAPK protein content and phosphorylation status between SED and CT subjects. Results: There was no difference in total-MAPK expression between SED and CT (p?>?.05). p-p38-MAPK tended to be greater for CT compared to SED (p?=?.07). There were moderate effect sizes of decreased pERK/total-ERK (d?=??0.69) and increased pJNK/total-JNK (d?=?0.54) in CT compared to SED. There was a positive correlation between p-p38-MAPK/total-MAPK and the percentage of type I fibres (r?=?0.73, p?=?.016). Conclusion: Contrary to previous studies, chronic endurance training does not greatly influence total MAPK protein expression in chronically trained runners. However, resting phosphorylation of p38-MAPK may contribute to enhanced oxidative metabolism at chronically trained levels. These alterations are likely involved in the different physiological adaptations that occur following long-term training or at highly competitive levels.  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