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   808篇
  免费   69篇
  国内免费   9篇
耳鼻咽喉   2篇
儿科学   41篇
妇产科学   11篇
基础医学   64篇
口腔科学   29篇
临床医学   136篇
内科学   206篇
皮肤病学   40篇
神经病学   19篇
特种医学   103篇
外科学   89篇
综合类   13篇
预防医学   22篇
眼科学   3篇
药学   12篇
中国医学   1篇
肿瘤学   95篇
  2023年   8篇
  2021年   8篇
  2020年   6篇
  2019年   12篇
  2018年   16篇
  2017年   17篇
  2016年   28篇
  2015年   19篇
  2014年   33篇
  2013年   36篇
  2012年   25篇
  2011年   31篇
  2010年   34篇
  2009年   58篇
  2008年   27篇
  2007年   27篇
  2006年   33篇
  2005年   27篇
  2004年   23篇
  2003年   26篇
  2002年   17篇
  2001年   17篇
  2000年   4篇
  1999年   16篇
  1998年   36篇
  1997年   36篇
  1996年   38篇
  1995年   26篇
  1994年   24篇
  1993年   29篇
  1992年   6篇
  1991年   8篇
  1990年   7篇
  1989年   16篇
  1988年   12篇
  1987年   20篇
  1986年   12篇
  1985年   9篇
  1984年   7篇
  1983年   5篇
  1982年   3篇
  1981年   9篇
  1980年   5篇
  1978年   3篇
  1977年   4篇
  1976年   5篇
  1975年   2篇
  1974年   2篇
  1970年   4篇
  1963年   2篇
排序方式: 共有886条查询结果,搜索用时 15 毫秒
881.
882.
The objective of this study is to determine if there was a difference in rate of post-transplantation urinary tract infection (UTI) in patients who have an indwelling catheter inserted using sterile versus clean technique. UTI is the most common nosocomial infection in the post-transplantation period. We aim to describe risk factors associated with postoperative UTI in our institution and determine if there was a difference between those who have an indwelling catheter inserted using sterile versus clean technique. Risk factors for UTIs can be divided into recipient, donor, and procedure related factors. While an indwelling urinary catheter increases the risk of infection, it is vital for post-operative fluid balance monitoring. Given the morbidity of UTIs in transplant recipients, a number of studies have investigated modifiable risk factors; however, investigation of the technique of indwelling catheter insertion at the time of renal transplantation is yet to be examined. A retrospective analysis of a contemporaneously maintained database was performed of renal transplant recipients over a 2-year period from 2019–2021. Patients were divided into sterile versus clean technique, defined as the use of sterile gloves, gown and fenestrated drape following a surgical scrub, or sterile gloves alone following the use of alcohol-based hand sanitiser respectively. A p value of <0.05 was considered statistically significant. One hundred sixty-nine patients were included in analysis, with 31 UTIs (18.3%) within 30 days of renal transplantation. Female gender and autosomal dominant polycystic kidney disease were associated with a higher rate of UTI. One hundred twenty-three patients had a catheter inserted via sterile technique, and 46 with clean technique, with no significant difference in rate of post-operative UTI (p = 0.52). Inserting an indwelling catheter either by sterile or clean technique at the time of renal transplantation was not associated with the rate of postoperative UTI within 30 days.  相似文献   
883.
We report on five SARS-CoV-2 congregate setting outbreaks at U.S. Operation Allies Welcome Safe Havens/military facilities. Outbreak data were collected, and attack rates were calculated for various populations. Even in vaccinated populations, there was rapid spread, illustrating the importance of institutional prevention and mitigation policies in congregate settings.  相似文献   
884.
885.
886.
Crown fractures and luxations occur most frequently of all dental injuries. An appropriate treatment plan after an injury is important for a good prognosis. Guidelines are useful for delivering the best care possible in an efficient manner. The International Association of Dental Traumatology (IADT) has developed a consensus statement after a review of the dental literature and group discussions. Experienced researchers and clinicians from various specialties were included in the group. In cases where the data did not appear conclusive, recommendations were based on the consensus opinion of the IADT board members. The guidelines represent the current best evidence, based on literature research and professional opinion. In this first article of three, the IADT Guidelines for management of fractures and luxations of permanent teeth will be presented.  相似文献   
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