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   81127篇
  免费   6080篇
  国内免费   264篇
耳鼻咽喉   915篇
儿科学   2117篇
妇产科学   1090篇
基础医学   11010篇
口腔科学   858篇
临床医学   8499篇
内科学   17519篇
皮肤病学   904篇
神经病学   7858篇
特种医学   3124篇
外科学   13228篇
综合类   897篇
一般理论   91篇
预防医学   5995篇
眼科学   2002篇
药学   5418篇
中国医学   95篇
肿瘤学   5851篇
  2024年   57篇
  2023年   677篇
  2022年   1069篇
  2021年   2459篇
  2020年   1387篇
  2019年   2243篇
  2018年   2577篇
  2017年   1830篇
  2016年   1937篇
  2015年   2254篇
  2014年   3265篇
  2013年   4134篇
  2012年   6583篇
  2011年   6846篇
  2010年   3763篇
  2009年   3299篇
  2008年   5504篇
  2007年   5690篇
  2006年   5292篇
  2005年   5266篇
  2004年   4752篇
  2003年   4350篇
  2002年   3971篇
  2001年   614篇
  2000年   410篇
  1999年   589篇
  1998年   821篇
  1997年   610篇
  1996年   490篇
  1995年   440篇
  1994年   417篇
  1993年   409篇
  1992年   267篇
  1991年   207篇
  1990年   195篇
  1989年   175篇
  1988年   169篇
  1987年   139篇
  1986年   137篇
  1985年   154篇
  1984年   184篇
  1983年   156篇
  1982年   243篇
  1981年   239篇
  1980年   169篇
  1979年   96篇
  1978年   119篇
  1977年   101篇
  1976年   73篇
  1975年   61篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
991.
992.
993.
Background Candida auris is an emerging multidrug-resistant fungal pathogen associated with bloodstream, wound and other infections, especially in critically ill patients. C. auris carriage is persistent and is difficult to eradicate from the hospital environment.AimWe aimed to pilot admission screening for C. auris in intensive care units (ICUs) in England to estimate prevalence in the ICU population and to inform public health guidance.MethodsBetween May 2017 and April 2018, we screened admissions to eight adult ICUs in hospitals with no previous cases of C. auris, in three major cities. Swabs were taken from the nose, throat, axilla, groin, perineum, rectum and catheter urine, then cultured and identified using matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry (MALDI-TOF MS). Patient records were linked to routine ICU data to describe and compare the demographic and health indicators of the screened cohort with a national cohort of ICU patients admitted between 2016 and 2017.ResultsAll C. auris screens for 921 adults from 998 admissions were negative. The upper confidence limit of the pooled prevalence across all sites was 0.4%. Comparison of the screened cohort with the national cohort showed it was broadly similar to the national cohort with respect to demographics and co-morbidities.ConclusionThese findings imply that C. auris colonisation among patients admitted to ICUs in England is currently rare. We would not currently recommend widespread screening for C. auris in ICUs in England. Hospitals should continue to screen high-risk individuals based on local risk assessment.  相似文献   
994.
995.
996.
997.
998.
The COVID-19 outbreak has led to a focus by public health practitioners and scholars on ways to limit spread while facing unprecedented challenges and resource constraints. Recent COVID-19-specific enhanced Traffic Control Bundling (eTCB) recommendations provide a cogent framework for managing patient care pathways and reducing health care worker (HCW) and patient exposure to SARS-CoV-2. eTCB has been applied broadly and has proven to be effective in limiting fomite and droplet transmissions in hospitals and between hospitals and the surrounding community. At the same time, resource constrained conditions involving limited personal protective equipment (PPE), low testing availability, and variability in physical space can require modifications in the way hospitals implement eTCB. While eTCB has come to be viewed as a standard of practice, COVID-19 related resource constraints often require hospital implementation teams to customize eTCB solutions. We provide and describe a cross-functional, collaborative on-the-ground adaptive application of eTCB initially piloted at two hospitals and subsequently reproduced at 16 additional hospitals and health systems in the US to date. By effectively facilitating eTCB deployment, hospital leaders and practitioners can establish clearer ‘zones of risk’ and related protective practices that prevent transmission to HCWs and patients. We outline key insights and recommendations gained from recent implementation under the aforementioned constraints and a cross-functional team process that can be utilized by hospitals to most effectively adapt eTCB under resource constraints.  相似文献   
999.
1000.
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