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   1283494篇
  免费   98239篇
  国内免费   2042篇
耳鼻咽喉   18481篇
儿科学   44418篇
妇产科学   35133篇
基础医学   182549篇
口腔科学   33747篇
临床医学   111583篇
内科学   259441篇
皮肤病学   28192篇
神经病学   100828篇
特种医学   51415篇
外国民族医学   660篇
外科学   197204篇
综合类   27079篇
现状与发展   1篇
一般理论   377篇
预防医学   96009篇
眼科学   28073篇
药学   94993篇
  2篇
中国医学   2428篇
肿瘤学   71162篇
  2018年   13264篇
  2017年   10058篇
  2016年   11036篇
  2015年   12518篇
  2014年   17384篇
  2013年   26488篇
  2012年   36425篇
  2011年   38507篇
  2010年   23057篇
  2009年   22046篇
  2008年   37038篇
  2007年   39650篇
  2006年   39863篇
  2005年   38787篇
  2004年   37875篇
  2003年   36703篇
  2002年   35983篇
  2001年   64018篇
  2000年   66512篇
  1999年   56436篇
  1998年   15167篇
  1997年   13776篇
  1996年   14213篇
  1995年   13462篇
  1994年   12776篇
  1993年   11793篇
  1992年   44559篇
  1991年   43466篇
  1990年   42217篇
  1989年   40113篇
  1988年   36901篇
  1987年   36238篇
  1986年   33618篇
  1985年   32280篇
  1984年   24140篇
  1983年   20269篇
  1982年   11726篇
  1981年   10694篇
  1980年   9523篇
  1979年   21345篇
  1978年   14824篇
  1977年   12534篇
  1976年   11695篇
  1975年   12625篇
  1974年   14664篇
  1973年   14118篇
  1972年   12944篇
  1971年   11730篇
  1970年   11050篇
  1969年   10025篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
Haemophilia is a common cause of genetically inherited bleeding disorders. Pseudotumours occur in 1–2 % of persons with severe forms of haemophilia. These are a result of repeated haemorrhage into soft tissues, subperiosteum or a site of bone fracture with inadequate resorption of the extravasated blood. There are a number of therapeutic alternatives for this dangerous condition: surgical removal, percutaneous management, irradiation, embolization etc. In this case report, we describe the natural history, clinical course and successful surgical management of a patient with haemophilia who presented with a massive pseudotumour. We also briefly review the relevant literature on the various therapeutic modalities that have been implemented in the management of this rare complication. Though surgeons may be averse to operate on haemophiliacs, primary surgical management as done in our case may prove to be the definitive treatment option for such patients.  相似文献   
5.
6.
7.
8.
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   
9.
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