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   2039篇
  免费   159篇
  国内免费   13篇
耳鼻咽喉   18篇
儿科学   67篇
妇产科学   38篇
基础医学   328篇
口腔科学   48篇
临床医学   253篇
内科学   371篇
皮肤病学   32篇
神经病学   195篇
特种医学   43篇
外科学   231篇
综合类   9篇
一般理论   2篇
预防医学   203篇
眼科学   45篇
药学   153篇
中国医学   4篇
肿瘤学   171篇
  2023年   24篇
  2022年   11篇
  2021年   56篇
  2020年   59篇
  2019年   67篇
  2018年   78篇
  2017年   54篇
  2016年   76篇
  2015年   56篇
  2014年   95篇
  2013年   128篇
  2012年   138篇
  2011年   158篇
  2010年   84篇
  2009年   73篇
  2008年   130篇
  2007年   140篇
  2006年   127篇
  2005年   106篇
  2004年   104篇
  2003年   97篇
  2002年   93篇
  2001年   23篇
  2000年   20篇
  1999年   9篇
  1998年   10篇
  1997年   20篇
  1996年   6篇
  1995年   12篇
  1994年   11篇
  1993年   10篇
  1992年   9篇
  1991年   9篇
  1989年   6篇
  1988年   7篇
  1987年   8篇
  1986年   6篇
  1985年   5篇
  1984年   7篇
  1982年   7篇
  1979年   8篇
  1978年   3篇
  1977年   3篇
  1976年   3篇
  1974年   6篇
  1972年   4篇
  1971年   5篇
  1970年   3篇
  1968年   5篇
  1965年   4篇
排序方式: 共有2211条查询结果,搜索用时 15 毫秒
1.
ABSTRACT

Introduction

Individuals with autism spectrum disorder (ASD) and intellectual disability (ID) seem to be at increased risk for post-traumatic stress disorder (PTSD), but knowledge is sparse regarding its identification in this population. Previous research indicates that certain symptoms of PTSD may be more easily recognized, and that identifying reexperiencing and avoidance is particularly challenging.  相似文献   
2.
3.
4.
5.
Healthcare workers (HCWs) are at increased risk of both exposure and transmission of infectious disease. Two European Union (EU) directives state that health services are responsible for assessing their employees’ potential exposure to infectious diseases and offering immunisation free of charge. We assessed current policy for immunisation of HCWs and the availability of vaccine coverage data in the Nordic countries by surveying national vaccination experts in Denmark, Finland, Iceland, Norway and Sweden, as well as Swedish county medical officers (CMOs). All national experts and 17 of 21 Swedish CMOs responded. All EU countries had transposed the European directives into national law, while Norway and Iceland had similar national legislation. Recommendations or guidelines were issued in Denmark, Finland, Iceland, Norway and 15 of 17 responding Swedish counties. The range of diseases covered differed by countries and Swedish counties. HCW vaccine coverage data were not systematically collected; incomplete estimates were only available for Finland and two Swedish counties. In conclusion, recommendations or guidelines exist in the Nordic countries, but their impact cannot be assessed, as vaccine uptake among HCWs is not currently measured. Systematic collection of data is a necessary step towards improving HCW immunisation policy and practice in the Nordic countries.  相似文献   
6.
7.
In a prospective, randomized trial, 104 consecutive patients with displaced femoral neck fractures were allocated either to fixation with a sliding screw plate or 4 ASIF cancellous bone screws. The patients were reexamined at fixed intervals to determine the time of union. The 2-year-cumulated rate of union was 64 per cent in the plate group and 84 per cent in the screw group.  相似文献   
8.
9.
Plantar sensory threshold in the ulcerative foot   总被引:1,自引:0,他引:1  
J A Birke  D S Sims 《Leprosy review》1986,57(3):261-267
  相似文献   
10.
Postoperative Cognitive Dysfunction in Middle-aged Patients   总被引:13,自引:0,他引:13  
Background: Postoperative cognitive dysfunction (POCD) after noncardiac surgery is strongly associated with increasing age in elderly patients; middle-aged patients (aged 40-60 yr) may be expected to have a lower incidence, although subjective complaints are frequent.

Methods: The authors compared the changes in neuropsychological test results at 1 week and 3 months in patients aged 40-60 yr, using a battery of neuropsychological tests, with those of age-matched control subjects using Z-score analysis. They assessed risk factors and associations of POCD with measures of subjective cognitive function, depression, and activities of daily living.

Results: At 7 days, cognitive dysfunction as defined was present in 19.2% (confidence interval [CI], 15.7-23.1) of the patients and in 4.0% (CI, 1.6-8.0) of control subjects (P < 0.001). After 3 months, the incidence was 6.2% (CI, 4.1-8.9) in patients and 4.1% (CI, 1.7-8.4) in control subjects (not significant). POCD at 7 days was associated with supplementary epidural analgesia and reported avoidance of alcohol consumption. At 3 months, 29% of patients had subjective symptoms of POCD, and this finding was associated with depression. Early POCD was associated with reports of lower activity scores at 3 months.  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