全文获取类型
收费全文 | 1341篇 |
免费 | 4篇 |
专业分类
教育 | 1083篇 |
科学研究 | 75篇 |
各国文化 | 10篇 |
体育 | 41篇 |
文化理论 | 10篇 |
信息传播 | 126篇 |
出版年
2018年 | 14篇 |
2017年 | 12篇 |
2016年 | 16篇 |
2014年 | 22篇 |
2013年 | 310篇 |
2012年 | 23篇 |
2011年 | 23篇 |
2010年 | 19篇 |
2009年 | 28篇 |
2008年 | 26篇 |
2007年 | 23篇 |
2006年 | 28篇 |
2005年 | 23篇 |
2004年 | 27篇 |
2003年 | 21篇 |
2002年 | 21篇 |
2001年 | 12篇 |
2000年 | 13篇 |
1999年 | 13篇 |
1998年 | 10篇 |
1997年 | 14篇 |
1996年 | 14篇 |
1995年 | 15篇 |
1994年 | 17篇 |
1993年 | 21篇 |
1992年 | 20篇 |
1991年 | 17篇 |
1990年 | 16篇 |
1989年 | 24篇 |
1988年 | 17篇 |
1987年 | 24篇 |
1986年 | 16篇 |
1985年 | 29篇 |
1984年 | 24篇 |
1983年 | 25篇 |
1982年 | 19篇 |
1981年 | 34篇 |
1980年 | 24篇 |
1979年 | 26篇 |
1978年 | 28篇 |
1977年 | 20篇 |
1976年 | 20篇 |
1975年 | 12篇 |
1974年 | 17篇 |
1973年 | 22篇 |
1972年 | 11篇 |
1971年 | 12篇 |
1970年 | 15篇 |
1968年 | 16篇 |
1966年 | 13篇 |
排序方式: 共有1345条查询结果,搜索用时 46 毫秒
31.
32.
Justin X. Nicoll Andrew J. Galpin Donald B. Thomason Christopher A. Moore 《European Journal of Sport Science》2017,17(9):1194-1202
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
33.
This study was designed to obtain the perceptions of regular class teachers who taught children who had been in EMR programs, but had been decertified (D) and returned to regular classes in response to court cases and recent legislation. A cohort of regular class (RC) students were selected for comparative purposes. It was found that D students were placed into low ability classes; yet, teachers perceived D subjects to be significantly lower than RC students in both academic achievement and social acceptance. Only a small proportion of teachers indicated that the enrollment of D students had much impact on the regular class instructional program. However, the teachers were rather critical of the services received under the auspices of a transitional program, indicating in large part that the services were either not apparent or ineffective. 相似文献
34.
Peter J. Brady Cyril I. Figuerres Donald W. Felker Wayne M. Garrison 《Psychology in the schools》1978,15(3):434-438
Nineteen elementary teachers were observed for the frequency with which they modeled self-praise for their students and taught their students to praise and evaluate themselves. Measures of student self-concept, anxiety, and achievement responsibility were taken at the end of the year. It was found that teacher modeling of self-praise correlated negatively with boys' selfconcept and positively with girls'. Teacher encouragement of students to praise other students correlated positively with boys' anxiety and negatively with girls'. Teacher modeling of self-praise and teacher encouragement of students to praise other students were the best predictors of self-concept. 相似文献
35.
36.
37.
J. Bruce Francis Michalina Vaughan Colin Flood Page Sally Tomlinson R. A. Becher Margaret C. Ives John Urry K. G. Collier Meir Zadok Charles Carter Jürgen Schramm Jean Barry Graeme C. Moodie Donald Bligh R. A. King D. G. Mulcahy Peter Scott F. R. Charmer T. R. Bone John A. Hughes Roger Greenhough Alec M. Ross John Wakeford Joyce Skinner Duncan B. Nimmo Cedric Cullingford L. R. B. Elton 《Higher Education》1979,8(6):709-744
38.
39.
Details of the preparation and the immunogenic properties of an ultraviolet-inactivated poliomyelitis vaccine are described. The data presented indicate that the SK murine strain of the virus may be inactivated by controlled irradiation and yet retain sufficient immunizing potency to protect mice against 1,000 to 10,000 M.L.D. of the active virus administered intraperitoneally or intranasally. 相似文献
40.