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   2691198篇
  免费   193424篇
  国内免费   7824篇
耳鼻咽喉   36225篇
儿科学   89435篇
妇产科学   74551篇
基础医学   379434篇
口腔科学   73288篇
临床医学   242532篇
内科学   533760篇
皮肤病学   65479篇
神经病学   223062篇
特种医学   105478篇
外国民族医学   752篇
外科学   403584篇
综合类   51215篇
现状与发展   5篇
一般理论   989篇
预防医学   201466篇
眼科学   59876篇
药学   195811篇
  8篇
中国医学   5601篇
肿瘤学   149895篇
  2021年   21005篇
  2019年   21649篇
  2018年   31235篇
  2017年   24158篇
  2016年   28373篇
  2015年   31868篇
  2014年   42970篇
  2013年   64046篇
  2012年   85666篇
  2011年   89759篇
  2010年   54142篇
  2009年   51717篇
  2008年   84108篇
  2007年   89561篇
  2006年   91313篇
  2005年   87822篇
  2004年   84392篇
  2003年   81668篇
  2002年   78833篇
  2001年   131216篇
  2000年   134083篇
  1999年   113034篇
  1998年   32258篇
  1997年   28715篇
  1996年   28846篇
  1995年   27946篇
  1994年   25553篇
  1993年   23877篇
  1992年   86361篇
  1991年   82773篇
  1990年   80021篇
  1989年   77237篇
  1988年   70528篇
  1987年   68995篇
  1986年   64529篇
  1985年   61464篇
  1984年   45691篇
  1983年   38590篇
  1982年   22917篇
  1981年   20406篇
  1979年   39851篇
  1978年   28085篇
  1977年   23791篇
  1976年   21987篇
  1975年   23537篇
  1974年   27522篇
  1973年   26055篇
  1972年   24426篇
  1971年   22621篇
  1970年   20773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