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   3155564篇
  免费   235862篇
  国内免费   4741篇
耳鼻咽喉   44841篇
儿科学   105112篇
妇产科学   85960篇
基础医学   459420篇
口腔科学   86816篇
临床医学   284321篇
内科学   611236篇
皮肤病学   69701篇
神经病学   249719篇
特种医学   120118篇
外国民族医学   1096篇
外科学   477756篇
综合类   67362篇
现状与发展   12篇
一般理论   1126篇
预防医学   246895篇
眼科学   73983篇
药学   235616篇
  10篇
中国医学   6133篇
肿瘤学   168934篇
  2019年   25034篇
  2018年   34839篇
  2017年   26197篇
  2016年   29337篇
  2015年   33077篇
  2014年   46604篇
  2013年   70416篇
  2012年   96936篇
  2011年   103203篇
  2010年   61566篇
  2009年   58226篇
  2008年   97268篇
  2007年   103940篇
  2006年   104839篇
  2005年   101554篇
  2004年   97852篇
  2003年   94398篇
  2002年   91880篇
  2001年   144827篇
  2000年   149067篇
  1999年   126149篇
  1998年   36567篇
  1997年   32211篇
  1996年   32597篇
  1995年   30906篇
  1994年   28743篇
  1993年   26859篇
  1992年   98618篇
  1991年   96625篇
  1990年   94060篇
  1989年   90265篇
  1988年   83084篇
  1987年   81889篇
  1986年   76523篇
  1985年   73672篇
  1984年   55040篇
  1983年   46760篇
  1982年   27749篇
  1981年   25003篇
  1979年   50404篇
  1978年   35756篇
  1977年   30043篇
  1976年   28525篇
  1975年   30812篇
  1974年   36527篇
  1973年   34971篇
  1972年   32608篇
  1971年   30513篇
  1970年   28438篇
  1969年   26773篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
72.

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   
73.
74.
75.
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   
76.
77.
78.
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   
79.
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   
80.
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