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   2463170篇
  免费   179738篇
  国内免费   3615篇
耳鼻咽喉   33590篇
儿科学   78977篇
妇产科学   65549篇
基础医学   365269篇
口腔科学   68044篇
临床医学   218183篇
内科学   481522篇
皮肤病学   55005篇
神经病学   194989篇
特种医学   90769篇
外国民族医学   490篇
外科学   366640篇
综合类   48027篇
现状与发展   12篇
一般理论   868篇
预防医学   197641篇
眼科学   57642篇
药学   184505篇
  10篇
中国医学   5011篇
肿瘤学   133780篇
  2021年   20921篇
  2019年   21773篇
  2018年   30896篇
  2017年   22799篇
  2016年   25122篇
  2015年   28277篇
  2014年   39039篇
  2013年   58438篇
  2012年   82623篇
  2011年   87711篇
  2010年   51143篇
  2009年   47502篇
  2008年   81176篇
  2007年   86570篇
  2006年   87039篇
  2005年   84142篇
  2004年   80244篇
  2003年   77042篇
  2002年   74479篇
  2001年   111067篇
  2000年   113997篇
  1999年   95480篇
  1998年   27426篇
  1997年   23931篇
  1996年   24320篇
  1995年   22946篇
  1994年   21093篇
  1993年   19879篇
  1992年   73217篇
  1991年   71223篇
  1990年   69567篇
  1989年   66721篇
  1988年   61339篇
  1987年   60082篇
  1986年   56208篇
  1985年   53937篇
  1984年   40010篇
  1983年   34008篇
  1982年   20189篇
  1979年   36774篇
  1978年   26249篇
  1977年   21800篇
  1976年   20903篇
  1975年   22472篇
  1974年   26990篇
  1973年   25708篇
  1972年   24053篇
  1971年   22879篇
  1970年   21047篇
  1969年   20175篇
排序方式: 共有10000条查询结果,搜索用时 265 毫秒
61.
62.

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   
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