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   2461818篇
  免费   181353篇
  国内免费   3668篇
耳鼻咽喉   33793篇
儿科学   79668篇
妇产科学   65217篇
基础医学   363071篇
口腔科学   69728篇
临床医学   220011篇
内科学   481734篇
皮肤病学   54737篇
神经病学   195034篇
特种医学   91467篇
外国民族医学   508篇
外科学   368096篇
综合类   48542篇
现状与发展   12篇
一般理论   892篇
预防医学   195621篇
眼科学   56665篇
药学   181885篇
  11篇
中国医学   5065篇
肿瘤学   135082篇
  2021年   21802篇
  2019年   22086篇
  2018年   30656篇
  2017年   23021篇
  2016年   25176篇
  2015年   28548篇
  2014年   40165篇
  2013年   58968篇
  2012年   82511篇
  2011年   87734篇
  2010年   51263篇
  2009年   48175篇
  2008年   80789篇
  2007年   86119篇
  2006年   86343篇
  2005年   84085篇
  2004年   80272篇
  2003年   76976篇
  2002年   73204篇
  2001年   111118篇
  2000年   113683篇
  1999年   95574篇
  1998年   27927篇
  1997年   24437篇
  1996年   24789篇
  1995年   23398篇
  1994年   21514篇
  1993年   20336篇
  1992年   73359篇
  1991年   71432篇
  1990年   69671篇
  1989年   66927篇
  1988年   61480篇
  1987年   60220篇
  1986年   56269篇
  1985年   54011篇
  1984年   40053篇
  1983年   34009篇
  1982年   20221篇
  1979年   36422篇
  1978年   26010篇
  1977年   21520篇
  1976年   20608篇
  1975年   22171篇
  1974年   26519篇
  1973年   25162篇
  1972年   23506篇
  1971年   22317篇
  1970年   20546篇
  1969年   19595篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.

Introduction

Several studies demonstrated that simulator-acquired skill transfer to the operating room is incomplete. Our objective was to identify trainee characteristics that predict the transfer of simulator-acquired skill to the operating room.

Methods

Trainees completed baseline assessments including intracorporeal suturing (IS) performance, attentional selectivity, self-reported use of mental skills, and self-reported prior clinical and simulated laparoscopic experience and confidence. Residents then followed proficiency-based laparoscopic skills training, and their skill transfer was assessed on a live-anesthetized porcine model. Predictive characteristics for transfer test performance were assessed using multiple linear regression.

Results

Thirty-eight residents completed the study. Automaticity, attentional selectivity, resident perceived ability with laparoscopy and simulators, and post-training IS performance were predictive of IS performance during the transfer test.

Conclusions

Promoting automaticity, self-efficacy, and attention selectivity may help improve the transfer of simulator-acquired skill. Mental skills training and training to automaticity may therefore be valuable interventions to achieve this goal.  相似文献   
62.
63.
64.
65.
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   
66.
We report two British cases of liver abscess, due to Klebsiella pneumoniae and associated with synchronous infection elsewhere, which required liver resection for definitive treatment. They illustrate the geographic spread of aggressive K pneumoniae liver infection and demonstrate the importance of early aggressive treatment.  相似文献   
67.
Henna, derived from a combination of natural leaves and coloring additives, is a common decorative dye traditionally used in many Islamic religious celebrations. Para‐phenylenediamine (PPD), a major component of black henna tattoo, is a strong sensitizer and common allergen. We report a case of severe connubial allergic contact dermatitis after black henna heterotransfer in a girl.  相似文献   
68.
69.
70.
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