首页 | 官方网站   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   1169633篇
  免费   82040篇
  国内免费   2285篇
医药卫生   1253958篇
  2021年   10712篇
  2019年   10762篇
  2018年   14778篇
  2017年   11359篇
  2016年   12476篇
  2015年   14383篇
  2014年   20047篇
  2013年   28483篇
  2012年   40738篇
  2011年   42492篇
  2010年   24718篇
  2009年   23326篇
  2008年   40061篇
  2007年   41989篇
  2006年   42375篇
  2005年   41242篇
  2004年   39464篇
  2003年   37331篇
  2002年   36207篇
  2001年   57076篇
  2000年   58448篇
  1999年   49317篇
  1998年   13567篇
  1997年   11738篇
  1996年   11581篇
  1995年   10760篇
  1994年   9884篇
  1993年   9168篇
  1992年   36844篇
  1991年   35174篇
  1990年   33873篇
  1989年   32940篇
  1988年   29978篇
  1987年   29185篇
  1986年   27202篇
  1985年   26144篇
  1984年   18982篇
  1983年   16141篇
  1982年   9024篇
  1979年   16517篇
  1978年   11344篇
  1977年   9650篇
  1976年   8473篇
  1975年   9101篇
  1974年   10995篇
  1973年   10360篇
  1972年   9736篇
  1971年   9187篇
  1970年   8673篇
  1969年   8164篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
1.
2.
3.
This article describes a case of anaphylaxis secondary to chlorhexidine during urethral catheterisation. Despite little evidence for the use of antiseptic lubricants in preventing catheter-associated urinary tract infections, the distribution and use of such products continues to be widespread. Chlorhexidine-free lubricating gel is widely available and should be used for urological procedures wherever possible.  相似文献   
4.
5.
6.
7.
8.
9.
10.
Past research suggests that as many as 50% of onward human immunodeficiency virus (HIV) transmissions occur during acute and recent HIV infection. It is clearly important to develop interventions which focus on this highly infectious stage of HIV infection to prevent further transmission in the risk networks of acutely and recently infected individuals. Project Protect tries to find recently and acutely infected individuals and prevents HIV transmission in their risk networks. Participants are recruited by community health outreach workers at community-based HIV testing sites and drug users' community venues, by coupon referrals and through referrals from AIDS clinics. When a network with acute/recent infection is identified, network members are interviewed about their risky behaviors, network information is collected, and blood is drawn for HIV testing. Participants are also educated and given prevention materials (condoms, syringes, educational materials); HIV-infected participants are referred to AIDS clinics and are assisted with access to care. Community alerts about elevated risk of HIV transmission are distributed within the risk networks of recently infected. Overall, 342 people were recruited to the project and screened for acute/recent HIV infection. Only six index cases of recent infection (2.3% of all people screened) were found through primary screening at voluntary counseling and testing (VCT) sites, but six cases of recent infection were found through contact tracing of these recently infected participants (7% of network members who came to the interview). Combining screening at VCT sites and contact tracing the number of recently infected people we located as compared to VCT screening alone. No adverse events were encountered. These first results provide evidence for the theory behind the intervention, i.e., in the risk networks of recently infected people there are other people with recent HIV infection and they can be successfully located without increasing stigma for project participants.  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-23

京公网安备 11010802026262号