首页 | 官方网站   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   2642073篇
  免费   193875篇
  国内免费   7651篇
医药卫生   2843599篇
  2021年   21016篇
  2019年   21710篇
  2018年   30550篇
  2017年   23583篇
  2016年   27207篇
  2015年   30665篇
  2014年   42161篇
  2013年   62945篇
  2012年   83991篇
  2011年   88528篇
  2010年   53252篇
  2009年   51094篇
  2008年   82601篇
  2007年   87707篇
  2006年   89353篇
  2005年   85372篇
  2004年   82322篇
  2003年   79337篇
  2002年   76518篇
  2001年   129397篇
  2000年   132249篇
  1999年   111469篇
  1998年   31960篇
  1997年   28526篇
  1996年   28770篇
  1995年   27877篇
  1994年   25533篇
  1993年   23799篇
  1992年   85913篇
  1991年   82322篇
  1990年   79514篇
  1989年   76793篇
  1988年   70057篇
  1987年   68700篇
  1986年   64204篇
  1985年   61203篇
  1984年   45496篇
  1983年   38441篇
  1982年   22864篇
  1981年   20339篇
  1979年   39452篇
  1978年   27771篇
  1977年   23508篇
  1976年   21773篇
  1975年   23045篇
  1974年   27132篇
  1973年   25679篇
  1972年   24022篇
  1971年   22192篇
  1970年   20381篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.

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   
72.
73.
74.
75.
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   
76.
77.
78.
79.
Acne vulgaris (acne) is a chronic inflammatory disease of the sebaceous gland, characterized by follicular hyperkeratinization, excessive colonization by Propionibacterium acnes (Pacnes) as well as immune reactions and inflammation. Despite an armamentarium of topical treatments available including benzoyl peroxide, retinoids and azelaic acid, topical antibiotics in monotherapies, especially erythromycin and clindamycin, are still used in Europe to treat acne. This intensive use led to antimicrobial‐resistant P. acnes and staphylococci strains becoming one of the main health issues worldwide. This is an update on the current topical acne treatments available in Europe, their mechanism of action, their potential to induce antimicrobial resistance and their clinical efficacy and safety.  相似文献   
80.
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   
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-23

京公网安备 11010802026262号