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   3208179篇
  免费   229460篇
  国内免费   8652篇
耳鼻咽喉   43196篇
儿科学   107174篇
妇产科学   88589篇
基础医学   453473篇
口腔科学   89168篇
临床医学   293078篇
内科学   627338篇
皮肤病学   75533篇
神经病学   261935篇
特种医学   123238篇
外国民族医学   1009篇
外科学   477855篇
综合类   67410篇
现状与发展   5篇
一般理论   1265篇
预防医学   248233篇
眼科学   72216篇
药学   233939篇
  11篇
中国医学   6561篇
肿瘤学   175065篇
  2019年   24979篇
  2018年   35397篇
  2017年   27220篇
  2016年   31315篇
  2015年   35295篇
  2014年   48568篇
  2013年   73679篇
  2012年   97587篇
  2011年   103340篇
  2010年   62176篇
  2009年   59346篇
  2008年   96652篇
  2007年   102500篇
  2006年   104470篇
  2005年   100094篇
  2004年   96812篇
  2003年   93494篇
  2002年   90124篇
  2001年   152874篇
  2000年   156670篇
  1999年   132164篇
  1998年   37994篇
  1997年   33880篇
  1996年   33953篇
  1995年   32893篇
  1994年   30318篇
  1993年   28260篇
  1992年   103549篇
  1991年   100036篇
  1990年   97246篇
  1989年   93915篇
  1988年   85852篇
  1987年   84660篇
  1986年   79266篇
  1985年   75928篇
  1984年   56619篇
  1983年   47981篇
  1982年   28541篇
  1981年   25571篇
  1979年   50451篇
  1978年   35864篇
  1977年   30398篇
  1976年   28340篇
  1975年   30065篇
  1974年   35805篇
  1973年   34120篇
  1972年   31763篇
  1971年   29571篇
  1970年   27245篇
  1969年   25990篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
993.
994.
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   
995.
996.
Objectives –  To assess long‐term functioning and disability after traumatic brain injury (TBI). Material and methods –  Individuals (n = 88) in Norrbotten, northern Sweden, who had been transferred for neurosurgical care were assessed with internationally established TBI outcome measures 6–15 years post‐injury. Results –  There was an improvement in overall outcome from discharge from inpatient rehabilitation to follow‐up. Many individuals had a high degree of motor and cognitive functioning, which enabled them to live independently in their own home without assistance, but there remained a disability related to community reintegration and social participation. This affected their productivity and to some degree their marital stability. The remaining disability and reduced productivity were related to the age at injury and the injury severity. Conclusions –  Our data showed that individuals with a TBI can achieve and maintain a high degree of functioning many years after the injury. Increasing age and a greater injury severity contributed to their long‐term disability.  相似文献   
997.
998.
999.
1000.
Background  Patients with psoriasis experience remission and gradual reappearance of erythematous and scaly plaques and require individualized treatment over time. A goal of psoriasis treatment is to provide optimal efficacy with a flexible therapeutic regimen that may include treatment pauses.
Objectives  To determine whether patients receiving initial treatment with etanercept who then pause therapy would subsequently recapture response during re-treatment.
Patients and methods  A post-hoc analysis of 226 patients with moderate-to-severe psoriasis from a large multicentre trial was performed. Patients had received etanercept 50 mg twice weekly subcutaneously until a target clinical response had been achieved, then had paused treatment and eventually relapsed. They were then re-treated with etanercept 25 mg twice weekly. The number of patients recapturing a Physician Global Assessment (PGA) of psoriasis rating of ≤ 2 (clear, almost clear or mild) on first re-treatment was assessed. Patient satisfaction during the initial treatment and first re-treatment period was also determined.
Results  A total of 187 (83%) patients recaptured the target clinical response of a PGA of ≤ 2 after re-treatment. The majority of patients [219 of 226 (97%)] reported satisfaction with etanercept re-treatment. No new safety concerns emerged during re-treatment.
Conclusions  In this post-hoc analysis, patients with psoriasis who were re-treated with etanercept 25 mg twice weekly effectively recaptured clinical responses that patients found satisfactory. A flexible treatment option is available to dermatologists and patients for individualized care.  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