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   6501篇
  免费   366篇
  国内免费   29篇
耳鼻咽喉   78篇
儿科学   179篇
妇产科学   229篇
基础医学   925篇
口腔科学   176篇
临床医学   516篇
内科学   1169篇
皮肤病学   161篇
神经病学   451篇
特种医学   263篇
外科学   902篇
综合类   174篇
一般理论   2篇
预防医学   652篇
眼科学   126篇
药学   539篇
中国医学   65篇
肿瘤学   289篇
  2023年   38篇
  2022年   95篇
  2021年   190篇
  2020年   100篇
  2019年   168篇
  2018年   209篇
  2017年   148篇
  2016年   135篇
  2015年   199篇
  2014年   212篇
  2013年   279篇
  2012年   472篇
  2011年   503篇
  2010年   265篇
  2009年   196篇
  2008年   346篇
  2007年   355篇
  2006年   320篇
  2005年   296篇
  2004年   306篇
  2003年   232篇
  2002年   252篇
  2001年   183篇
  2000年   217篇
  1999年   163篇
  1998年   74篇
  1997年   54篇
  1996年   47篇
  1995年   37篇
  1994年   30篇
  1993年   33篇
  1992年   74篇
  1991年   53篇
  1990年   60篇
  1989年   73篇
  1988年   55篇
  1987年   57篇
  1986年   50篇
  1985年   38篇
  1984年   25篇
  1983年   31篇
  1982年   20篇
  1981年   17篇
  1979年   14篇
  1978年   19篇
  1977年   13篇
  1976年   17篇
  1975年   18篇
  1974年   17篇
  1972年   13篇
排序方式: 共有6896条查询结果,搜索用时 0 毫秒
91.
92.
93.
94.
Development of secondary amyloidosis is an infrequent complication in patients with Behçet's syndrome (BS). It has been reported that multiple systemic involvement, long disease duration, and male gender are major clinical factors accompanying the development of amyloidosis in BS. We report a case of secondary amyloidosis in a patient diagnosed as having BS with a positive pathergy test 9 years previously and who had isolated mucocutaneous involvement. Regular use of colchicine since the diagnosis and somewhat mild progress of the disease could not prevent the development of secondary amyloidosis in this patient. He is alive and receives hemodialysis regularly.  相似文献   
95.
96.
BACKGROUND: Although it is widely accepted that stenting confers favorable angiographic and clinical results in coronary arteries >/=3.0 mm in diameter, the outcome of stent placement in smaller vessels remains largely unclear. METHODS AND RESULTS: We sought to specifically determine the early and long-term clinical outcomes in a large series of 197 consecutive patients who underwent stent placement in 207 vessels <3.0 mm in diameter. Procedural success, accomplished in 97.3%, was accompanied by a significant reduction in lesion severity from 85% +/- 9% before to 3% +/- 7% diameter stenosis after the procedure (P =.0001) and a 0.5% incidence of subacute stent thrombosis. At 1 and 2 years of follow-up, survival rate without major target lesion-driven events was observed in 77.3% and 73.9% of patients, respectively. Repeat revascularization procedures accounted for most of these events; cardiac deaths (including those related to subacute stent thrombosis) and late (>30 days) myocardial infarctions were infrequent (2.4% and 1.0%, respectively). The 6-month angiographic binary instent restenosis rate was 30.1%. On multivariate analysis, diabetes mellitus (P =. 0275), small baseline reference vessel size (P =.0300), and stent size 相似文献   
97.
98.
BACKGROUND: The involvement of the rectovaginal septum, of rectum and sigmoid by endometriosis leads to intense symptoms as dysmenorrhea, pelvic pain, deep dyspareunia, tenesmus and hematochezia in young and middle aged women during periods. The diagnosis can be made by tipycal history and vaginal examination, rectal examination, barium enema, proctoscopy and so on. The indications of operation include severe clinic symptoms and failed conservative therapy. The treatment of choice for this type of endometriosis is the surgical resection of affected tissue, in order to relieve patient symptoms, and avoid disease progression. The correct assessment as to the presence and extension of the endometriosis-affected sites such as the rectum, uterosacral ligaments and rectovaginal septum is extremely important to provide better results with the surgical treatment of endometriosis. AIM: To describe the main aspects related to rectovaginal septum endometriosis and offer the general surgeon some information about this enigmatic disease. CONCLUSION: Rectovaginal septum endometriosis is a frequent disease, with specific diagnosis and treatment.  相似文献   
99.
100.
Journal of Thrombosis and Thrombolysis - Newer generation durable polymer drug-eluting stents (DP-DES) and biodegradable polymer DES (BP-DES) have similar efficacy with dual-antiplatelet therapy...  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