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   1472449篇
  免费   99271篇
  国内免费   2010篇
耳鼻咽喉   19781篇
儿科学   51351篇
妇产科学   38409篇
基础医学   203026篇
口腔科学   35205篇
临床医学   124491篇
内科学   292267篇
皮肤病学   28875篇
神经病学   117908篇
特种医学   60614篇
外国民族医学   661篇
外科学   229541篇
综合类   29765篇
现状与发展   1篇
一般理论   379篇
预防医学   114698篇
眼科学   30764篇
药学   105298篇
  2篇
中国医学   3048篇
肿瘤学   87646篇
  2018年   35801篇
  2017年   28020篇
  2016年   32007篇
  2015年   13432篇
  2014年   18094篇
  2013年   27129篇
  2012年   43053篇
  2011年   59680篇
  2010年   41845篇
  2009年   33853篇
  2008年   57714篇
  2007年   63632篇
  2006年   40212篇
  2005年   41431篇
  2004年   42081篇
  2003年   42557篇
  2002年   39711篇
  2001年   64542篇
  2000年   67346篇
  1999年   56773篇
  1998年   15437篇
  1997年   14134篇
  1996年   14383篇
  1995年   13671篇
  1994年   12996篇
  1993年   11965篇
  1992年   44746篇
  1991年   43717篇
  1990年   42474篇
  1989年   40308篇
  1988年   37074篇
  1987年   36423篇
  1986年   33778篇
  1985年   32441篇
  1984年   24260篇
  1983年   20381篇
  1982年   11866篇
  1981年   10744篇
  1980年   9661篇
  1979年   21489篇
  1978年   14916篇
  1977年   12589篇
  1976年   11788篇
  1975年   12660篇
  1974年   14734篇
  1973年   14148篇
  1972年   12973篇
  1971年   11752篇
  1970年   11097篇
  1969年   10079篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
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   
6.
7.
8.
9.
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   
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