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   3263487篇
  免费   277247篇
  国内免费   13724篇
耳鼻咽喉   45168篇
儿科学   97389篇
妇产科学   81797篇
基础医学   518703篇
口腔科学   90914篇
临床医学   300477篇
内科学   571042篇
皮肤病学   88789篇
神经病学   280537篇
特种医学   127866篇
外国民族医学   105篇
外科学   517598篇
综合类   96185篇
现状与发展   58篇
一般理论   2156篇
预防医学   268824篇
眼科学   75258篇
药学   224011篇
  24篇
中国医学   9534篇
肿瘤学   158023篇
  2021年   55423篇
  2020年   36882篇
  2019年   58344篇
  2018年   73213篇
  2017年   56859篇
  2016年   62410篇
  2015年   76841篇
  2014年   111760篇
  2013年   177094篇
  2012年   84485篇
  2011年   82646篇
  2010年   116535篇
  2009年   122781篇
  2008年   70935篇
  2007年   71902篇
  2006年   83916篇
  2005年   78826篇
  2004年   80694篇
  2003年   71861篇
  2002年   61911篇
  2001年   103155篇
  2000年   95794篇
  1999年   96095篇
  1998年   65282篇
  1997年   63061篇
  1996年   60747篇
  1995年   56090篇
  1994年   49907篇
  1993年   46663篇
  1992年   66505篇
  1991年   62802篇
  1990年   59320篇
  1989年   58823篇
  1988年   54261篇
  1987年   52962篇
  1986年   49870篇
  1985年   50299篇
  1984年   45963篇
  1983年   42360篇
  1982年   40557篇
  1981年   38244篇
  1980年   35956篇
  1979年   36897篇
  1978年   33053篇
  1977年   30828篇
  1976年   27627篇
  1975年   26185篇
  1974年   26562篇
  1973年   25231篇
  1972年   23726篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
12.
13.
Graefe's Archive for Clinical and Experimental Ophthalmology - The published online version contains mistake as the author's first name and last name have been interchanged as "Hild...  相似文献   
14.
15.
16.
Although depression is associated to physical discomfort, meanings of the body in depression are rarely addressed in clinical research. Drawing on the concept of the lived body, this study explores depression as an embodied phenomenon. Using a hermeneutic phenomenological approach, the analysis of narrative‐based interviews with 11 depressed adults discloses a thematic structure of an embodied process of an ambiguous striving against fading. Five subthemes elicit different dimensions of this process, interpreted as disabling or enabling: feeling estranged, feeling confined, feeling burdensome, sensing life and seeking belongingness. In relation to clinical practice, we suggest that the interdisciplinary team can focus on enhancing the enabling dimensions, for example through guided physical activities to support the patient to feel more alive, capable and connected. Moreover, we suggest that the treatment process benefits from an increased awareness of the ambiguity in the patient's struggle, acknowledging both destructive and recharging elements of the withdrawing, and the perceived conflict in‐between.  相似文献   
17.
18.
19.
Academic output is just one aspect of a successful career as a plastic surgeon. However, for those with a strong interest in academia, the academic output of a department will likely be a key factor when deciding how to rank jobs. The aim of this study was to quantify and rank the academic output of plastic surgery units across the UK and Ireland. The Institute for Scientific Information (ISI) Web of Science Bibliometric analysis tool was used to collate cumulative (1950–2016), 10 year (2006–2016) and 3 years (2013–2015) research output data for plastic surgery units in the UK and Ireland. Sixty-six plastic surgery units were identified. Departments were ranked for each time period according to the number of papers produced, number of citations (Nc) and h-index (a measure of the impact of scientific output). The top 3 departments for number of papers in the last 10 years were The Royal Free Hospital, London (226) Broomfield Hospital, Chelmsford (218), and Morriston Hospital and Swansea (188). The top 3 for h-number were The Royal Free Hospital (21) Wythenshawe Hospital, Manchester (18) and Morriston Hospital (17). Academic output varies across plastic surgery units in the UK and Ireland. A number of departments have consistently maintained high academic outputs across the years and will be of interest to surgeons hoping to pursue a career in academia.  相似文献   
20.
Krishna S. Iyer 《Platelets》2020,31(4):474-482
Abstract

Platelets are small, anucleated effector cells that play an important role in linking the hemostatic and inflammatory processes in the body. Platelet function is known to be altered under various inflammatory conditions including aging. A gain in platelet function during aging can increase the risk of thrombotic events, such as stroke and acute myocardial infarction. Anti-platelet therapy is designed to reduce risk of serious cerebrovascular and cardiovascular events, but the adverse consequences of therapy, such as risk for bleeding increases with aging as well. Age-associated comorbidities such as obesity, diabetes, and hyperlipidemia also contribute to increased platelet activity and thus can enhance the risk of thrombosis. Therefore, identification of unique mechanisms of platelet dysfunction in aging and in age-associated comorbidities is warranted to design novel antiplatelet drugs. This review outlines some of the current areas of research on aging-related mechanisms of platelet hyperactivity and addresses the clinical urgency for designing anti-platelet therapies toward novel molecular targets in the aging population.  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