全文获取类型
| 收费全文 | 732篇 |
| 免费 | 13篇 |
| 国内免费 | 8篇 |
专业分类
| 教育 | 436篇 |
| 科学研究 | 88篇 |
| 各国文化 | 28篇 |
| 体育 | 117篇 |
| 综合类 | 13篇 |
| 文化理论 | 3篇 |
| 信息传播 | 68篇 |
出版年
| 2023年 | 4篇 |
| 2022年 | 5篇 |
| 2021年 | 18篇 |
| 2020年 | 23篇 |
| 2019年 | 37篇 |
| 2018年 | 43篇 |
| 2017年 | 35篇 |
| 2016年 | 31篇 |
| 2015年 | 29篇 |
| 2014年 | 20篇 |
| 2013年 | 122篇 |
| 2012年 | 31篇 |
| 2011年 | 33篇 |
| 2010年 | 31篇 |
| 2009年 | 27篇 |
| 2008年 | 24篇 |
| 2007年 | 30篇 |
| 2006年 | 19篇 |
| 2005年 | 22篇 |
| 2004年 | 13篇 |
| 2003年 | 27篇 |
| 2002年 | 29篇 |
| 2001年 | 19篇 |
| 2000年 | 15篇 |
| 1999年 | 3篇 |
| 1998年 | 4篇 |
| 1997年 | 3篇 |
| 1996年 | 5篇 |
| 1995年 | 2篇 |
| 1994年 | 3篇 |
| 1992年 | 2篇 |
| 1991年 | 3篇 |
| 1989年 | 3篇 |
| 1988年 | 2篇 |
| 1985年 | 3篇 |
| 1984年 | 4篇 |
| 1983年 | 4篇 |
| 1981年 | 1篇 |
| 1980年 | 2篇 |
| 1979年 | 3篇 |
| 1978年 | 1篇 |
| 1977年 | 4篇 |
| 1976年 | 2篇 |
| 1972年 | 1篇 |
| 1971年 | 1篇 |
| 1969年 | 1篇 |
| 1963年 | 2篇 |
| 1957年 | 1篇 |
| 1955年 | 1篇 |
| 1875年 | 1篇 |
排序方式： 共有753条查询结果，搜索用时 15 毫秒
141.
Stuart Caulfield Kirsty A. McDonald Brian Dawson Sarah M. Stearne Ben A. Green Jonas Rubenson 《Journal of sports sciences》2016,34(15):1485-1490
This study examined the haemolytic effects of an interval-based running task in fore-foot and rear-foot striking runners. Nineteen male distance runners (10 fore-foot, 9 rear-foot) completed 8 × 3 min repeats at 90% vVO2peak on a motorised treadmill. Pre- and post-exercise venous blood samples were analysed for serum haptoglobin to quantify the haemolytic response to running. Vertical ground reaction forces were also captured via a force plate beneath the treadmill belt. Haptoglobin levels were significantly decreased following exercise (P = 0.001) in both groups (but not between groups), suggesting that the running task created a haemolytic stress. The ground reaction force data showed strong effect sizes for a greater peak force (d = 1.20) and impulse (d = 1.37) in fore-foot runners, and a greater rate of force development (d = 2.74) in rear-foot runners. The lack of difference in haptoglobin response between groups may be explained by the trend for fore-foot runners to experience greater peak force and impulse during the stance phase of their running gait, potentially negating any impact of the greater rate of force development occurring from the rear-foot runners’ heel strike. Neither type of runner (fore-foot or rear-foot) appears more susceptible to technique-related foot-strike haemolysis. 相似文献
142.
罗本琦 《安庆师范学院学报(社会科学版)》2001,20(1):9-11
我国现行收养制度由于收养关系建立的随意性、收养效果的不稳定性等弊端 ,不能充分体现收养制度的本来目的。建立我国特别收养制度很有必要 ,主要应解决如下问题 :限制特别收养关系主体范围 ,严肃特别收养关系成立的形式 ,强化特别收养关系的效果。 相似文献
143.
The onset of exercise facilitates an improvement in psychomotor performance until the second ventilatory threshold, after which performance is reduced. This inverted-U relationship appears valid for incremental and steady-state exercise, however, not for intermittent exercise. This study examined changes in psychomotor performance of team sport officials during a laboratory-based match simulation. Twelve elite Australian football (n = 5) and rugby league (n = 7) officials (32.5 ± 5.5 years; 180.0 ± 6.8 cm; 78.8 ± 7.6 kg) completed the match simulation on a non-motorised treadmill. Physiological measures were routinely taken, while psychomotor performance was assessed using the Eriksen flanker task (multiple-choice response time). Significant reductions (P < 0.05) were observed in distance covered and high-speed running during the second half when compared to the first. No significant differences (P > 0.05) in psychomotor performance at different time points were observed. Response time was significantly improved when running above 65% of maximal sprinting speed (P < 0.01). This data questions the application of the inverted-U hypothesis for intermittent exercise and suggests that the short high-intensity efforts may not result in the same physiological events that limit psychomotor performance during sustained high-intensity exercise. More so, the high-intensity efforts during the match protocol appeared to promote psychomotor performance during the intermittent exercise. 相似文献
144.
145.
146.
147.
148.
Ben Compaine 《Journal of Media Economics》2013,26(2):113-115
149.
150.