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   864篇
  免费   67篇
  国内免费   2篇
耳鼻咽喉   23篇
儿科学   43篇
妇产科学   33篇
基础医学   69篇
口腔科学   36篇
临床医学   81篇
内科学   176篇
皮肤病学   18篇
神经病学   82篇
特种医学   41篇
外科学   186篇
综合类   20篇
预防医学   23篇
眼科学   24篇
药学   48篇
中国医学   1篇
肿瘤学   29篇
  2024年   4篇
  2023年   8篇
  2022年   26篇
  2021年   31篇
  2020年   23篇
  2019年   32篇
  2018年   38篇
  2017年   34篇
  2016年   66篇
  2015年   66篇
  2014年   67篇
  2013年   68篇
  2012年   114篇
  2011年   87篇
  2010年   47篇
  2009年   33篇
  2008年   21篇
  2007年   21篇
  2006年   23篇
  2005年   21篇
  2004年   12篇
  2003年   10篇
  2002年   8篇
  2001年   10篇
  2000年   5篇
  1999年   5篇
  1998年   5篇
  1997年   3篇
  1995年   1篇
  1992年   1篇
  1991年   1篇
  1990年   1篇
  1989年   1篇
  1986年   2篇
  1985年   2篇
  1984年   1篇
  1983年   4篇
  1982年   1篇
  1979年   2篇
  1977年   2篇
  1975年   1篇
  1974年   5篇
  1973年   3篇
  1972年   5篇
  1971年   1篇
  1969年   4篇
  1968年   2篇
  1965年   3篇
  1963年   2篇
排序方式: 共有933条查询结果,搜索用时 15 毫秒
1.
2.
3.
Mumps is still a common childhood disease in rural areas where mumps vaccination is not widespread. A 14-year-old girl with fatal interstitial nephritis as a complication of mumps is reported. The patient had not been vaccinated with mumps vaccine and had contracted mumps during a village epidemic. The illness began with parotitis, and renal insufficiency developed within a week. The patient’s renal function rapidly deteriorated and the outcome was fatal. The postmortem renal necropsy sample demonstrated interstitial mononuclear cell infiltration, edema, and focal tubular epithelial cell damage, confirming the clinical diagnosis. In developing countries routine mumps vaccination may help to prevent possible fatal complications of mumps. Furthermore, patients with mumps, especially complicated cases, should be followed closely. Received: 19 August 1998 / Revised: 7 December 1998 / Accepted: 8 December 1998  相似文献   
4.
5.
Rocuronium is a non-depolarizing neuromuscular blocking agent which is associated with injection pain and induces withdrawal movement of the injected hand or arm or generalized movements of the body after intravenous injection. The aim of this randomized study was to compare the efficacy of pretreatment with oral dexketoprofen trometamol (Arvelles®; Group A) with placebo (Group P) without tourniquet to prevent the withdrawal response caused by rocuronium injection. The study cohort comprised 150 American Society of Anaesthesiologists class I–III patients aged 18–75 years who were scheduled to undergo elective surgery with general anesthesia. The patients response to rocuronium was graded using a 4-point scale [0 = no response; 1 = movement/withdrawal at the wrist only, 2 = movement/withdrawal involving the arm only (elbow/shoulder); 3 = generalized response]. The overall incidence of withdrawal movement after rocuronium injection was significantly lower in Group A (30.1 %) than in Group P (64.6 %) (p < 0.001). The incidence of score 0 withdrawal movements was higher in Group A (69.9 %) than in Group P (35.4 %), that of score 1 withdrawal movements was similar between groups (Group A 21.9 %; Group B 26.1 %) (p = 0.560) and that of score 2 withdrawal movements was lower in Group A (8.2 %) than in Group P (38.5 %) (p < 0.001). There were no score 3 withdrawal movements in either group (p > 0.05). These results demonstrate that the preemptive administration of dexketoprofen trometamol can attenuate the degree of withdrawal movements caused by the pain of the rocuronium injection.  相似文献   
6.
7.
An 11‐year‐old girl was admitted to pediatric emergency unit with complaints of fatigue and cough. The patient had no previous complaints. There was no history of rheumatic heart disease. The height and duration of the P‐wave was 4 mm and 0.16 seconds, respectively (p mitrale). Echocardiography showed enlarged left atrium (51×61 mm in diameter). Both the anterolateral and posteromedial papillary muscles were directly attached to the anterior and posterior mitral valve leaflets without tendinous chords. The patient was diagnosed with mitral arcade, severe mitral stenosis, and mitral regurgitation. The patient was referred to surgery for replacement of mitral valve.  相似文献   
8.
9.
Coexistence of bicuspid aortic and pulmonary valves in the same patient is a very rare entity identified mainly during surgery and postmortem. To the best of our knowledge, only one case has been diagnosed by two‐dimensional echocardiography in a newborn with malposition of the great arteries but no images were presented. Here, we are reporting the first case of bicuspid pulmonary and aortic valves diagnosed by live/real time three‐dimensional transesophageal echocardiography in an adult with normally related great arteries.  相似文献   
10.

Purpose  

High-energy photons are most commonly used in radiotherapy to treat cancer. Wedge filters are required to obtain homogeneous dose distribution in the patient. Different wedge filter types create different surface doses. In this study, the effect of the virtual and physical wedge filters on the surface and build-up region doses was examined for 6- and 18-MV high-energy photon beams.  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