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   3107985篇
  免费   223227篇
  国内免费   4501篇
耳鼻咽喉   43487篇
儿科学   100857篇
妇产科学   83673篇
基础医学   453861篇
口腔科学   86377篇
临床医学   281875篇
内科学   594925篇
皮肤病学   68941篇
神经病学   243203篇
特种医学   118184篇
外国民族医学   733篇
外科学   467400篇
综合类   63738篇
现状与发展   13篇
一般理论   1082篇
预防医学   238704篇
眼科学   72858篇
药学   237132篇
  18篇
中国医学   6553篇
肿瘤学   172099篇
  2021年   24335篇
  2019年   24773篇
  2018年   34451篇
  2017年   26234篇
  2016年   29541篇
  2015年   33144篇
  2014年   46548篇
  2013年   69793篇
  2012年   95722篇
  2011年   101846篇
  2010年   60526篇
  2009年   56897篇
  2008年   95405篇
  2007年   101835篇
  2006年   102730篇
  2005年   99423篇
  2004年   95294篇
  2003年   91775篇
  2002年   88854篇
  2001年   146509篇
  2000年   150733篇
  1999年   126566篇
  1998年   35747篇
  1997年   31423篇
  1996年   31685篇
  1995年   29825篇
  1994年   27446篇
  1993年   25874篇
  1992年   97437篇
  1991年   94820篇
  1990年   92893篇
  1989年   89395篇
  1988年   82005篇
  1987年   80345篇
  1986年   75495篇
  1985年   71961篇
  1984年   53309篇
  1983年   45306篇
  1982年   26469篇
  1979年   48806篇
  1978年   34369篇
  1977年   29241篇
  1976年   27246篇
  1975年   29776篇
  1974年   35311篇
  1973年   33780篇
  1972年   31911篇
  1971年   30154篇
  1970年   27789篇
  1969年   26584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.
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   
77.
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   
78.
79.
We report on a child with several café au lait spots in association with a lumbar lipomeningomyelocele as an apparently new association. Cutaneous markers, the identification of which plays a crucial role in the early diagnosis and management of spinal malformations, can accompany occult spinal dysraphism. Herein we report a case of lumbar lipomeningomyelocele associated with an overlying café au lait spot that served as a marker of occult spinal dysraphism. The patient also had segmental café au lait spots on the face, making the association unique.  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