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   18434篇
  免费   1083篇
  国内免费   77篇
耳鼻咽喉   144篇
儿科学   494篇
妇产科学   459篇
基础医学   2511篇
口腔科学   358篇
临床医学   1784篇
内科学   4279篇
皮肤病学   475篇
神经病学   1594篇
特种医学   319篇
外科学   1795篇
综合类   100篇
一般理论   13篇
预防医学   1986篇
眼科学   414篇
药学   1293篇
中国医学   80篇
肿瘤学   1496篇
  2024年   13篇
  2023年   136篇
  2022年   278篇
  2021年   639篇
  2020年   335篇
  2019年   558篇
  2018年   589篇
  2017年   397篇
  2016年   400篇
  2015年   529篇
  2014年   748篇
  2013年   978篇
  2012年   1458篇
  2011年   1609篇
  2010年   869篇
  2009年   677篇
  2008年   1253篇
  2007年   1256篇
  2006年   1167篇
  2005年   1162篇
  2004年   1017篇
  2003年   934篇
  2002年   851篇
  2001年   173篇
  2000年   157篇
  1999年   172篇
  1998年   158篇
  1997年   124篇
  1996年   86篇
  1995年   92篇
  1994年   78篇
  1993年   57篇
  1992年   71篇
  1991年   61篇
  1990年   52篇
  1989年   42篇
  1988年   42篇
  1987年   28篇
  1986年   34篇
  1985年   39篇
  1984年   30篇
  1983年   26篇
  1982年   21篇
  1981年   22篇
  1980年   16篇
  1979年   27篇
  1976年   13篇
  1975年   13篇
  1974年   14篇
  1970年   13篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Breast pseudoaneurysms after a core needle biopsy are a rare complication with a low incidence. However, it is important to be aware of the possibility of complications that require treatment.  相似文献   
2.
3.
Over 36 million people worldwide are infected with HIV. Antiretroviral therapy (ART) has proven to be highly effective to prevent HIV-1 transmission, clinical progression and death. Despite this success, the number of HIV-1 infected individuals continues increasing and ART should be taken for life. Therefore, there are two main priorities: the development of preventive vaccines to protect from HIV acquisition and achieve an efficient control of HIV infection in the absence of ART (functional cure). In this sense, in the last few years, there has been a broad interest in new and innovative approaches such as mRNA-based vaccines. RNA-based immunogens represent a promising alternative to conventional vaccines because of their high potency, capacity for rapid development and potential for low-cost manufacture and safe administration. Some mRNA-based vaccines platforms against infectious diseases have demonstrated encouraging results in animal models and humans. However, their application is still limited because the instability and inefficient in vivo delivery of mRNA. Immunogens, design, immunogenicity, chemical modifications on the molecule or the vaccine delivery methods are all crucial interventions for improvement. In this review we, will present the current knowledge and challenges in this research field. mRNA vaccines hold great promises as part of a combined strategy, for achieving HIV functional cure.  相似文献   
4.
5.
6.
7.
8.
9.

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   
10.
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