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   47937篇
  免费   3477篇
  国内免费   192篇
耳鼻咽喉   383篇
儿科学   1556篇
妇产科学   1227篇
基础医学   6825篇
口腔科学   616篇
临床医学   5096篇
内科学   10061篇
皮肤病学   884篇
神经病学   5610篇
特种医学   1152篇
外科学   4270篇
综合类   381篇
一般理论   58篇
预防医学   5728篇
眼科学   621篇
药学   3115篇
中国医学   88篇
肿瘤学   3935篇
  2024年   60篇
  2023年   657篇
  2022年   1095篇
  2021年   2158篇
  2020年   1305篇
  2019年   1794篇
  2018年   2057篇
  2017年   1384篇
  2016年   1533篇
  2015年   1684篇
  2014年   2056篇
  2013年   2659篇
  2012年   4259篇
  2011年   4214篇
  2010年   2133篇
  2009年   1889篇
  2008年   3011篇
  2007年   2980篇
  2006年   2829篇
  2005年   2630篇
  2004年   2346篇
  2003年   2083篇
  2002年   1783篇
  2001年   227篇
  2000年   198篇
  1999年   237篇
  1998年   365篇
  1997年   266篇
  1996年   222篇
  1995年   191篇
  1994年   136篇
  1993年   132篇
  1992年   107篇
  1991年   89篇
  1990年   84篇
  1989年   87篇
  1988年   73篇
  1987年   56篇
  1986年   67篇
  1985年   44篇
  1984年   63篇
  1983年   51篇
  1982年   41篇
  1981年   44篇
  1980年   39篇
  1979年   29篇
  1978年   22篇
  1977年   25篇
  1975年   17篇
  1973年   14篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
While previous randomised controlled trials and meta-analyses offer only limited evidence for the effectiveness of cognitive rehabilitation, qualitative studies examining patient perspectives report more positive outcomes. This meta-synthesis of qualitative studies examined patient perspectives of cognitive rehabilitation for memory, attention, and executive function problems in people with multiple sclerosis. Using set eligibility criteria, we screened electronic databases, reference lists, and academic networks for relevant papers. Seven papers (195 participants) were selected. Two independent researchers conducted quality appraisals of papers. Data analysis, guided by the thematic synthesis approach, yielded six main themes. These suggested that patients benefitted from the group environment in rehabilitation. Cognitive rehabilitation facilitated the participants’ reflection and awareness of their cognitive deficits, and was associated with increased knowledge and understanding of their illness. Increased strategy use was reported and associated with improvements in cognitive functioning and greater confidence and perseverance. Participants reported emotional and social improvements, and felt more optimistic. Overall, these changes had a positive impact on participants’ quality of life. This synthesis of qualitative studies indicates that people with multiple sclerosis who experience cognitive deficits benefit from cognitive rehabilitation programmes. This finding must, however, be viewed in light of the limitations of this meta-synthesis. The meta-synthesis was registered in the PROSPERO database under CRD42017040148.  相似文献   
3.
4.
5.
6.
7.
8.
Objective: Report measured resting energy expenditure (REE) in wheelchair rugby athletes and evaluate agreement between REE and the prediction models of Chun, Cunningham, Harris-Benedict, Mifflin, Nightingale and Gorgey, and Owen.

Design: Cohort-based validation study.

Setting. Paralympic team training camp.

Participants: Fourteen internationally competitive athletes who play wheelchair rugby, 13 of whom had cervical spinal cord injuries (SCI).

Outcome Measures: A portable metabolic analyzer was used to measure REE following an overnight fast and dual-energy X-ray absorptiometry (DXA) was used to assess lean body mass for the prediction equations.

Results: REE in the current sample was 1735?±?257?kcal?×?day?1 ranging from 1324 to 2068?kcal?×?day?1 Bhambhani Y. Physiology of wheelchair racing in athletes with spinal cord injury. Sports Med 2002;32(1):2351.[Crossref], [PubMed], [Web of Science ®] [Google Scholar]. Bland–Altman analyses revealed negative mean bias but similar limits of agreement between measured REE and scores predicted by Chun, Cunningham, Mifflin, Nightingale and Gorgey, and Owen models in elite athletes who play wheelchair rugby.

Conclusion: Prediction models regressed on persons with and without SCI under-predicted REE of competitive wheelchair rugby athletes. This outcome may be explained by the higher REE/fat-free mass (FFM) ratio of current athletes compared to less active samples. Findings from the current study will help practitioners to determine nutrient intake needs on training days of varied intensity.  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