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   11124篇
  免费   548篇
  国内免费   26篇
耳鼻咽喉   158篇
儿科学   552篇
妇产科学   199篇
基础医学   1054篇
口腔科学   178篇
临床医学   721篇
内科学   2284篇
皮肤病学   286篇
神经病学   821篇
特种医学   337篇
外科学   1854篇
综合类   377篇
预防医学   553篇
眼科学   459篇
药学   916篇
  1篇
中国医学   54篇
肿瘤学   894篇
  2023年   58篇
  2022年   178篇
  2021年   331篇
  2020年   176篇
  2019年   239篇
  2018年   278篇
  2017年   203篇
  2016年   293篇
  2015年   288篇
  2014年   453篇
  2013年   602篇
  2012年   842篇
  2011年   900篇
  2010年   498篇
  2009年   438篇
  2008年   666篇
  2007年   728篇
  2006年   675篇
  2005年   565篇
  2004年   566篇
  2003年   449篇
  2002年   340篇
  2001年   167篇
  2000年   186篇
  1999年   163篇
  1998年   72篇
  1997年   71篇
  1996年   64篇
  1995年   51篇
  1994年   36篇
  1993年   45篇
  1992年   64篇
  1991年   55篇
  1990年   58篇
  1989年   60篇
  1988年   48篇
  1987年   66篇
  1986年   49篇
  1985年   61篇
  1984年   53篇
  1983年   34篇
  1978年   29篇
  1977年   30篇
  1974年   34篇
  1973年   49篇
  1972年   42篇
  1971年   37篇
  1970年   30篇
  1969年   35篇
  1968年   36篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
Malignancy larynx usually presents early, the common symptoms being hoarseness, pain thorat, cough and irritation of throat. An advanced malignancy is likely to be complicated by a pharyngo-cutaneous fistula. However it is an occurrence towards the end stage of the disease. Here we present a case of malignancy larynx primarily presenting as pharyngo-cutaneous fistula without any other symptoms.  相似文献   
12.
13.
Three cases of enteritis necroticans seen at Port Moresby General Hospital are described. All three cases proved diagnostic problems and in all three the diagnosis was made only at laparotomy. While the condition is uncommon in Port Moresby, these cases indicate that it must now be considered earlier rather than later.  相似文献   
14.
15.
Reported herein is a case of obsessive–compulsive disorder with persistent and distressing musical obsessions along with other symptoms. Advanced source analysis of electroencephalographic data indicated high spectral power over the bifrontal region. The musical symptoms were resistant to pharmacotherapy but there was some reduction in frequency and duration of musical obsessions with thought-stopping technique.  相似文献   
16.
Abstract   Dissection of the pulmonary autograft is an extremely rare complication requiring emergent treatment as there is a chance of rupture and proximal aortic involvement. The autograft dissection can involve the aortic annulus, causing separation of leaflets from the annulus in addition to causing annular dilatation, thereby precluding resuspension of leaflets. The usual treatment in such cases is to perform the Bentall procedure, which involves placing a valved conduit (usually mechanical valve) and thereby necessitating anticoagulation. This report describes a case of successful valve-sparing aortic root replacement following the Ross procedure with dissection of autograft.  相似文献   
17.
18.
Object Intracranial aneurysms are rare in children and have different epidemiological, clinical, and morphological characteristics and outcome from those in adults. Materials and methods We analyzed demographic, clinical, radiologic features, treatment, and outcome in 55 patients <18 years of age, treated from Jan 1995 through December 2005. Results Intracranial aneurysms in children below 18 years constituted 4% of all intracranial aneurysms. Internal Carotid artery (ICA) bifurcation was the commonest location. About half of the aneurysms were complex. Three-fourth of the patients required surgical treatment. Two patients died, constituting 5% mortality. Two patients (5%) had poor outcome, whereas the majority (90%) had a favorable outcome. Conclusions Pediatric aneurysms have male predominance, higher incidence of clinical features of mass effect or seizures, high incidence of large, traumatic/mycotic aneurysms, associated illnesses and ICH/IVH and hydrocephalus, better Hunt and Hess grades at presentation, ICA bifurcation as the commonest site, and better outcome than their adult counterparts.  相似文献   
19.
One hundred insulin-dependent diabetic patients (age < 45 years, 53 smokers) were followed for six years. The age, duration of diabetes and mean glycated haemoglobin levels, were comparable between the smokers and non-smokers. Microvascular complications (retinopathy and increased urine albumin excretion) were commoner and more severe in the smoking group at six years, particularly in heavy smokers. Of the 45 original smokers reviewed at six years, 12 (27%) had stopped, six of whom had developed microvascular complications. Only two of the ''heavy'' initial smokers, likely to be at most risk, had stopped smoking, and three original non-smokers had started smoking.  相似文献   
20.
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