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   4055篇
  免费   269篇
  国内免费   26篇
耳鼻咽喉   40篇
儿科学   96篇
妇产科学   63篇
基础医学   395篇
口腔科学   60篇
临床医学   366篇
内科学   911篇
皮肤病学   51篇
神经病学   246篇
特种医学   66篇
外科学   678篇
综合类   128篇
一般理论   2篇
预防医学   326篇
眼科学   106篇
药学   453篇
中国医学   70篇
肿瘤学   293篇
  2023年   37篇
  2022年   142篇
  2021年   186篇
  2020年   101篇
  2019年   116篇
  2018年   144篇
  2017年   79篇
  2016年   109篇
  2015年   124篇
  2014年   162篇
  2013年   196篇
  2012年   312篇
  2011年   318篇
  2010年   165篇
  2009年   136篇
  2008年   246篇
  2007年   227篇
  2006年   196篇
  2005年   218篇
  2004年   194篇
  2003年   173篇
  2002年   143篇
  2001年   69篇
  2000年   73篇
  1999年   62篇
  1998年   43篇
  1997年   26篇
  1996年   20篇
  1995年   22篇
  1994年   18篇
  1993年   11篇
  1992年   28篇
  1991年   32篇
  1990年   16篇
  1989年   27篇
  1988年   19篇
  1987年   18篇
  1986年   21篇
  1985年   16篇
  1984年   12篇
  1983年   10篇
  1982年   7篇
  1981年   5篇
  1980年   7篇
  1979年   8篇
  1978年   9篇
  1977年   7篇
  1974年   7篇
  1973年   5篇
  1966年   6篇
排序方式: 共有4350条查询结果,搜索用时 15 毫秒
71.
Bray  J. O.  Sutton  T. L.  Akhter  M. S.  Iqbal  E.  Orenstein  S. B.  Nikolian  V. C. 《Hernia》2022,26(6):1687-1694
Hernia - Telemedicine has emerged as a viable option to in-person visits for the evaluation and management of surgical patients. Increased integration of telemedicine has allowed for greater access...  相似文献   
72.
Today, research in biomedicine often requires the knowledge and technologies in diverse fields. Therefore, there is an increasing need for collaborative team science that crosses traditional disciplines. Here, we discuss our own lessons from both interdisciplinary and transdisciplinary teams, which ultimately ushered us to expand our research realm beyond bone biology.  相似文献   
73.
74.
75.
76.
77.
78.
The current document commissioned by the Society for Cardiovascular Angiography and Interventions (SCAI) and endorsed by the American College of Cardiology, the American Heart Association, and Heart Rhythm Society represents a comprehensive update to the 2012 and 2016 consensus documents on patient-centered best practices in the cardiac catheterization laboratory. Comprising updates to staffing and credentialing, as well as evidence-based updates to the pre-, intra-, and post-procedural logistics, clinical standards and patient flow, the document also includes an expanded section on CCL governance, administration, and approach to quality metrics. This update also acknowledges the collaboration with various specialties, including discussion of the heart team approach to management, and working with electrophysiology colleagues in particular. It is hoped that this document will be utilized by hospitals, health systems, as well as regulatory bodies involved in assuring and maintaining quality, safety, efficiency, and cost-effectiveness of patient throughput in this high volume area.  相似文献   
79.

The study evaluated the hepatoprotective activity of plant extracts of cinnamon and glycyrrhizin in distinct dosage ways to minimize the oxidative stress induced by carbon tetrachloride (CCl4) in BALB/cJ inbred albino mice. Fifteen albino mice were divided into five groups, each group containing three mice. Group A was referred as positive control while group B, C, D and E were injected intraperitoneally with 1 mL/kg body weight of CCl4 twice a week for 1 month. Group C and D were treated orally with isolated extracts of cinnamon @50 mg/kg and glycyrrhizin @50 mg/kg respectively on daily basis for 1 month. However, group E was treated orally with combination dose of cinnamon @50 mg/kg + glycyrrhizin @50 mg/kg body weight. The increase in the levels of alanine transaminase (ALT), aspartate transaminase (AST) and alkaline phosphatase (ALP), triglyceride (TG), malondialdehyde (MDA) and glucose were recorded in CCl4 induced liver injury in mice while there is decrease in the levels of total protein (TP), reduced glutathione (GSH), Superoxide dismutase (SOD) and catalase (CAT) in CCL4 intoxicated mice. Isolated therapy of plant extracts of cinnamon and glycyrrhizin decreased the levels of ALT, AST, ALP, MDA, TG and glucose whereas increase in TP, GSH, SOD and CAT was observed in plant extracts treated mice. The best restoration of all the above said parameters near to control was observed in group of mice treated with combination dose of cinnamon and glycyrrhizin @50 mg/kg. Therefore, the present study declared the antioxidative, anti-inflammatory and hepatoprotective activity of standardized extracts of cinnamon and glycyrrhizin and their potent defensive property.

  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