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   234368篇
  免费   11637篇
  国内免费   602篇
耳鼻咽喉   3190篇
儿科学   6987篇
妇产科学   6003篇
基础医学   32254篇
口腔科学   7398篇
临床医学   16409篇
内科学   53871篇
皮肤病学   7002篇
神经病学   19591篇
特种医学   5607篇
外国民族医学   32篇
外科学   30335篇
综合类   1211篇
一般理论   70篇
预防医学   22921篇
眼科学   4829篇
药学   16849篇
中国医学   792篇
肿瘤学   11256篇
  2023年   1265篇
  2022年   1777篇
  2021年   4580篇
  2020年   2554篇
  2019年   4547篇
  2018年   6703篇
  2017年   4313篇
  2016年   4419篇
  2015年   5199篇
  2014年   6474篇
  2013年   9347篇
  2012年   15688篇
  2011年   16322篇
  2010年   8315篇
  2009年   6827篇
  2008年   13529篇
  2007年   14150篇
  2006年   13919篇
  2005年   13749篇
  2004年   12724篇
  2003年   11731篇
  2002年   11175篇
  2001年   6817篇
  2000年   7461篇
  1999年   5574篇
  1998年   1529篇
  1997年   1099篇
  1996年   1059篇
  1995年   925篇
  1994年   764篇
  1993年   687篇
  1992年   2411篇
  1991年   2299篇
  1990年   2095篇
  1989年   1878篇
  1988年   1693篇
  1987年   1664篇
  1986年   1560篇
  1985年   1513篇
  1984年   1168篇
  1983年   989篇
  1979年   1074篇
  1978年   723篇
  1975年   716篇
  1974年   947篇
  1973年   895篇
  1972年   756篇
  1971年   718篇
  1970年   772篇
  1969年   729篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
81.
82.
83.
84.
We report on a 3‐year‐old girl with a microvesicular generalized rash in whom primary infection by parvovirus B19 was demonstrated by seroconversion. To our knowledge, this is the first instance of an eruption arising from parvovirus B19 with this peculiar clinical pattern.  相似文献   
85.
86.

Introduction

The fast track / ultra-fast-track protocols are techniques used to optimise the patient care process and a quick recovery after cardiac surgery. They are one of the mainstays of efficient practice. With their use, the length of hospital and intensive care unit (ICU) stays are reduced, with a direct impact on costs and the quality of the health service.

Objective

To compare the length of stay in the ICU, length of hospital stay, and post-operative mortality in ultra-fast-track extubated (uFTE) patients and those with conventional extubation (CE) after cardiac surgery.

Methods

Longitudinal, analytical, retrospective study was conducted, with the period between the time of surgery and discharge being included as the study period.

Results

A total of 396 patients older than 18 years who required cardiac surgery were included, of whom 207 patients had (uFTE) and 189 had CE. Although the groups were not comparable due to the statistical differences found, when performing the multivariate adjustment, uFTE maintained its statistical independence and was associated with lower cardiovascular morbidity, such as myocardial ischaemia (95% CI: 0.37-0.86; P = .01) and lower post-surgical vasopressor requirement (95% CI: 0.18-0.49; P < .01). No significant differences were found in the length of hospital stay, ICU stay, or post-operative mortality in the ICU.

Conclusion

Implementing the uFTE strategy, decreases cardiovascular morbidity and vasopressor requirement. The change to uFTE should be accompanied by changes in models and practices in patient recovery to standardised protocols. This study shows that uFTE did not reduce the length of ICU stay, hospital stay, or mortality.  相似文献   
87.
88.
89.
Introduction: The rising prevalence of musculoskeletal pathologies in developed countries has caused a dramatic impact on social welfare. Amidst these musculoskeletal pathologies is Rheumatoid arthritis (RA), a chronic systemic autoimmune disease that mostly affects the synovium. RA metabolic-associated alterations, including distorted adipokine production, enhance RA inflammatory environment. Among the altered adipokines, visfatin is particularly involved in RA inflammation and catabolism and stands out as an essential enzyme linked to critical cell features.

Areas covered: We discuss the potential mechanism supporting the contribution of visfatin to RA and the association between RA and obesity. We discuss the repurposing of cancer-tested drugs to inhibit visfatin in the context of RA. Additionally, we address the possibility of combining these drugs with current RA therapy. Finally, we explore the future of visfatin as an RA biomarker or therapeutic target.

Expert opinion: Inhibition of visfatin has become an interesting therapeutic approach for RA pathology. Such a feat has already been attained in oncology using small molecule inhibitors, which suggest that a similar course of action would be worth pursuing in the RA context. Visfatin will become an important biomarker and therapeutic target for RA.  相似文献   

90.
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