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   2461029篇
  免费   181204篇
  国内免费   3672篇
耳鼻咽喉   33773篇
儿科学   79650篇
妇产科学   65209篇
基础医学   362892篇
口腔科学   69663篇
临床医学   219972篇
内科学   481718篇
皮肤病学   54722篇
神经病学   194978篇
特种医学   91332篇
外国民族医学   508篇
外科学   367942篇
综合类   48538篇
现状与发展   12篇
一般理论   891篇
预防医学   195526篇
眼科学   56685篇
药学   181817篇
  11篇
中国医学   5062篇
肿瘤学   135004篇
  2021年   21787篇
  2019年   22049篇
  2018年   30633篇
  2017年   23001篇
  2016年   25152篇
  2015年   28511篇
  2014年   40131篇
  2013年   58902篇
  2012年   82433篇
  2011年   87660篇
  2010年   51214篇
  2009年   48125篇
  2008年   80703篇
  2007年   86033篇
  2006年   86275篇
  2005年   84016篇
  2004年   80204篇
  2003年   76912篇
  2002年   73136篇
  2001年   111076篇
  2000年   113645篇
  1999年   95531篇
  1998年   27899篇
  1997年   24423篇
  1996年   24771篇
  1995年   23373篇
  1994年   21503篇
  1993年   20321篇
  1992年   73329篇
  1991年   71403篇
  1990年   69633篇
  1989年   66888篇
  1988年   61449篇
  1987年   60190篇
  1986年   56236篇
  1985年   53983篇
  1984年   40029篇
  1983年   33990篇
  1982年   20206篇
  1979年   36404篇
  1978年   25996篇
  1977年   21512篇
  1976年   20597篇
  1975年   22157篇
  1974年   26494篇
  1973年   25147篇
  1972年   23492篇
  1971年   22307篇
  1970年   20535篇
  1969年   19582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