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   3152534篇
  免费   235527篇
  国内免费   4738篇
耳鼻咽喉   44833篇
儿科学   104959篇
妇产科学   85874篇
基础医学   458923篇
口腔科学   86764篇
临床医学   283858篇
内科学   610721篇
皮肤病学   69640篇
神经病学   249412篇
特种医学   119992篇
外国民族医学   1096篇
外科学   477498篇
综合类   67296篇
现状与发展   12篇
一般理论   1118篇
预防医学   246527篇
眼科学   73936篇
药学   235366篇
  11篇
中国医学   6132篇
肿瘤学   168831篇
  2019年   24981篇
  2018年   34776篇
  2017年   26156篇
  2016年   29283篇
  2015年   33028篇
  2014年   46533篇
  2013年   70293篇
  2012年   96803篇
  2011年   103031篇
  2010年   61476篇
  2009年   58161篇
  2008年   97100篇
  2007年   103747篇
  2006年   104687篇
  2005年   101419篇
  2004年   97700篇
  2003年   94261篇
  2002年   91757篇
  2001年   144752篇
  2000年   149000篇
  1999年   126079篇
  1998年   36518篇
  1997年   32177篇
  1996年   32561篇
  1995年   30886篇
  1994年   28719篇
  1993年   26837篇
  1992年   98546篇
  1991年   96557篇
  1990年   93998篇
  1989年   90215篇
  1988年   83041篇
  1987年   81827篇
  1986年   76470篇
  1985年   73599篇
  1984年   55011篇
  1983年   46713篇
  1982年   27727篇
  1981年   24977篇
  1979年   50372篇
  1978年   35731篇
  1977年   30016篇
  1976年   28485篇
  1975年   30773篇
  1974年   36490篇
  1973年   34924篇
  1972年   32575篇
  1971年   30488篇
  1970年   28421篇
  1969年   26751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