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   55488篇
  免费   3574篇
  国内免费   110篇
耳鼻咽喉   529篇
儿科学   2296篇
妇产科学   1514篇
基础医学   6948篇
口腔科学   539篇
临床医学   8546篇
内科学   9519篇
皮肤病学   756篇
神经病学   5330篇
特种医学   974篇
外科学   4603篇
综合类   590篇
一般理论   109篇
预防医学   7773篇
眼科学   760篇
药学   3632篇
中国医学   61篇
肿瘤学   4693篇
  2023年   291篇
  2022年   431篇
  2021年   1016篇
  2020年   693篇
  2019年   1050篇
  2018年   1202篇
  2017年   977篇
  2016年   1058篇
  2015年   1237篇
  2014年   1711篇
  2013年   2728篇
  2012年   3929篇
  2011年   4241篇
  2010年   2356篇
  2009年   2127篇
  2008年   3831篇
  2007年   4075篇
  2006年   3927篇
  2005年   4068篇
  2004年   3863篇
  2003年   3636篇
  2002年   3351篇
  2001年   469篇
  2000年   343篇
  1999年   470篇
  1998年   685篇
  1997年   608篇
  1996年   479篇
  1995年   481篇
  1994年   425篇
  1993年   338篇
  1992年   244篇
  1991年   207篇
  1990年   185篇
  1989年   196篇
  1988年   187篇
  1987年   169篇
  1986年   162篇
  1985年   163篇
  1984年   186篇
  1983年   169篇
  1982年   216篇
  1981年   208篇
  1980年   158篇
  1979年   97篇
  1978年   114篇
  1977年   53篇
  1976年   57篇
  1975年   45篇
  1974年   68篇
排序方式: 共有10000条查询结果,搜索用时 16 毫秒
41.
We report the MRI features in a series of four patients with primary angiitis of the central nervous system (PACNS). Based on MRI features, clinical presentation, paraclinical investigations and laboratory tests, including cerebrospinal fluid (CSF) analysis, various differentials were considered. In two patients with MRI findings of cortical, subcortical and deep white matter lesions, lack of mass effect, focal areas of bleed and heterogeneous parenchymal, leptomeningeal or pial enhancement and a normal magnetic resonance angiography, a differential diagnosis of primary angiitis of the CNS was also considered. In all patients, an open brain biopsy was advised to establish a definitive diagnosis of PACNS. Here, we briefly discuss the MRI features, correlation with clinical presentation and paraclinical parameters for the diagnosis of this entity. We also briefly review the literature.  相似文献   
42.
43.
44.
45.
This paper reports the proceedings of the discussion panel assigned to look at clinical aspects of quality in emergency medicine. One of the seven stated objectives of the Academic Emergency Medicine consensus conference on quality in emergency medicine was to educate emergency physicians regarding quality measures and quality improvement as essential aspects of the practice of emergency medicine. Another topic of interest was a discussion of the value of information technology in facilitating quality care in the clinical practice of emergency medicine. It is important to note that this is not intended to be a comprehensive review of this extensive topic, but instead is designed to report the discussion that occurred at this session of the consensus conference.  相似文献   
46.
47.
48.
Pressure ulcers are a high-risk, high-volume, and high-cost problem for persons with disabilities. This article describes four tools published in the literature and reports the validity, reliability, strengths, and limitations of each. These tools include the Pressure Ulcer Scale for Healing (PUSH), the Pressure Sore Status Tool (PSST), the Sussman Wound Healing Tool (SWHT), and the Sessing Scale. Rehabilitation nurses should use a consistent framework with accurate quantification to assess, document, and monitor changes in pressure ulcers over time. Such a measurement tool must prove valid for the disabled population in which the tool is used. This will enable healthcare providers to communicate more effectively and evaluate the therapeutic plan of care.  相似文献   
49.
Metabolic syndrome is associated with increased risk for cardiovascular and cerebrovascular disease. The World Health Organization and National Cholesterol Education Program Adult Treatment Panel III have identified physiologic abnormalities associated with metabolic syndrome, including impaired glucose metabolism, high blood pressure, elevated cholesterol levels, and abdominal obesity. It is estimated that 47 million Americans have metabolic syndrome. A variety of therapies may help reduce the incidence and risk, including diet, weight loss, physical exercise, glycemic control, and pharmacological treatments. Nursing care is focused on developing an individualized plan of care that includes family members and providing education, psychosocial support, close monitoring, and continued follow-up to ensure adherence and success in achieving patient outcomes.  相似文献   
50.
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