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   187319篇
  免费   2111篇
  国内免费   24篇
耳鼻咽喉   1284篇
儿科学   6986篇
妇产科学   3402篇
基础医学   18183篇
口腔科学   1749篇
临床医学   14050篇
内科学   32856篇
皮肤病学   866篇
神经病学   17684篇
特种医学   9270篇
外国民族医学   1篇
外科学   30204篇
综合类   2561篇
一般理论   12篇
预防医学   19380篇
眼科学   3036篇
药学   10234篇
中国医学   641篇
肿瘤学   17055篇
  2022年   109篇
  2021年   235篇
  2020年   169篇
  2019年   229篇
  2018年   22171篇
  2017年   17546篇
  2016年   19700篇
  2015年   1115篇
  2014年   1141篇
  2013年   1263篇
  2012年   7564篇
  2011年   21552篇
  2010年   19093篇
  2009年   11817篇
  2008年   19986篇
  2007年   22178篇
  2006年   1081篇
  2005年   2700篇
  2004年   3824篇
  2003年   4766篇
  2002年   2903篇
  2001年   593篇
  2000年   726篇
  1999年   461篇
  1998年   324篇
  1997年   319篇
  1996年   183篇
  1995年   201篇
  1994年   201篇
  1993年   141篇
  1992年   282篇
  1991年   324篇
  1990年   354篇
  1989年   272篇
  1988年   277篇
  1987年   257篇
  1986年   247篇
  1985年   223篇
  1984年   188篇
  1983年   188篇
  1982年   142篇
  1981年   120篇
  1980年   136篇
  1979年   181篇
  1978年   137篇
  1977年   100篇
  1976年   126篇
  1975年   122篇
  1974年   147篇
  1973年   95篇
排序方式: 共有10000条查询结果,搜索用时 24 毫秒
21.

Background  

Health service policy in the United Kingdom emphasises the importance of self-care by patients with chronic conditions. Written information for patients about their condition is seen as an important aid to help patients look after themselves. From a discourse analysis perspective written texts such as patient information leaflets do not simply describe the reality of a medical condition and its management but by drawing on some sorts of knowledge and evidence rather than others help construct the reality of that condition. This study explored patient information leaflets on osteoarthritis (OA) to see how OA was constructed and to consider the implications for self-care.  相似文献   
22.

Background  

Total hip arthroplasty is a successful surgery, that fails at a rate of approximately 10% at ten years from surgery. Causes for failure are mainly aseptic loosening of one or both components partially due to wear of articular surfaces and partially to design. The present analysis aimed to identify risk factors and quantify their effects on aseptic failure.  相似文献   
23.

Background  

Skin and soft tissue infections are increasingly prevalent clinical problems, and it is important for health care practitioners to be well trained in how to treat skin abscesses. A realistic model of abscess incision and drainage will allow trainees to learn and practice this basic physician procedure.  相似文献   
24.
Abstract Background: Primary shoulder hemiarthroplasty is an established treatment modality for complex fractures of the proximal humerus. Long-term functional outcome is often disappointing. However, little is known about social implications particularly in the elderly. Methods: A single-institution case series of consecutive geriatric patients (age > 70 years) treated with shoulder hemiarthroplasty for complex fractures of the proximal humerus between 1994 and 1997 was analysed. Postoperative morbidity, long-term function, radiological outcome and social implications were evaluated. Results: Seventy-seven patients fulfilled the study criteria. Median age at the time of operation was 80 years (range 70–93 years). Systemic and local postoperative complications were observed in 8% including 2 patients (3%) with revision surgery. Postoperative mortality was 1%. Forty-eight patients (62%) were available for follow-up (median 49 months, range 25–80 months), 22 (29%) died from causes unrelated to hemiarthroplasty before follow-up and 7 patients (9%) did not attend follow-up examination. Median Constant-Murley score was 41 points (range 17–77 points). Long-term results concerning pain were satisfying. The Oxford shoulder score ranged from 14 to 40 (median 30). Forty-one patients (85%) still lived in their original environment and managed their daily life independently despite poor shoulder function. Four patients (8%) lived in a retirement home and 3 (6%) in a nursery home. Eighty percent of our patients were still able to use public transportation, do the daily shopping and wash their whole body by themselves. Conclusion: Most patients managed their daily life independently despite poor shoulder function.  相似文献   
25.
26.
27.

Background  

The telomeric region of mouse chromosome 12 has previously shown frequent allelic loss in murine lymphoma. The Bcl11b gene has been identified and suggested as a candidate tumor suppressor gene within this region. In this study, we aimed to elucidate whether Bcl11b is mutated in lymphomas with allelic loss, and whether the mutations we detected conferred any effect on cell proliferation and apoptosis.  相似文献   
28.
29.
30.
Abstract Surgical treatment of proximal humeral fractures still remains a challenge. This is primarily due to the fact that sufficient implant fixation in humeral head fractures is often not achieved due to substantial bone tissue loss with increasing age. In the last few years the locking plates and locking nails have been introduced into clinical practice with varying results. The biomechanical studies have focused on locking plate osteosynthesis as well. The following paper focuses on bone quality, biomechanical studies and biology of proper osteosynthesis and reviews the most recent literature.  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