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   1398671篇
  免费   113666篇
  国内免费   3271篇
耳鼻咽喉   18327篇
儿科学   46389篇
妇产科学   40940篇
基础医学   198852篇
口腔科学   37613篇
临床医学   124650篇
内科学   280696篇
皮肤病学   33299篇
神经病学   115858篇
特种医学   53708篇
外国民族医学   464篇
外科学   209837篇
综合类   32666篇
一般理论   487篇
预防医学   108790篇
眼科学   31338篇
药学   98098篇
  1篇
中国医学   3266篇
肿瘤学   80329篇
  2019年   11522篇
  2018年   16342篇
  2017年   12508篇
  2016年   14105篇
  2015年   15802篇
  2014年   22459篇
  2013年   33304篇
  2012年   45325篇
  2011年   47862篇
  2010年   28081篇
  2009年   26969篇
  2008年   44258篇
  2007年   46763篇
  2006年   47324篇
  2005年   45797篇
  2004年   43700篇
  2003年   41613篇
  2002年   40119篇
  2001年   72897篇
  2000年   74365篇
  1999年   61180篇
  1998年   16026篇
  1997年   14382篇
  1996年   14539篇
  1995年   14690篇
  1994年   13344篇
  1993年   12516篇
  1992年   45795篇
  1991年   43478篇
  1990年   41471篇
  1989年   39534篇
  1988年   36154篇
  1987年   35337篇
  1986年   32847篇
  1985年   31261篇
  1984年   23789篇
  1983年   19972篇
  1982年   12166篇
  1981年   10731篇
  1979年   20664篇
  1978年   14552篇
  1977年   12033篇
  1976年   11289篇
  1975年   11572篇
  1974年   13941篇
  1973年   13495篇
  1972年   12613篇
  1971年   11444篇
  1970年   10893篇
  1969年   10059篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
AIDS and Behavior - Although misperceived norms often drive personal health behaviors, we do not know about this phenomenon in the context of antiretroviral therapy (ART) adherence. We conducted a...  相似文献   
2.
Coates  Laura C.  Mease  Philip  Kronbergs  Andris  Helt  Cameron  Sandoval  David  Park  So Young  Combe  Bernard  Nash  Peter  Deodhar  Atul 《Clinical rheumatology》2022,41(10):3035-3047
Clinical Rheumatology - To evaluate the three-year efficacy and safety of ixekizumab with and without concomitant conventional synthetic disease-modifying antirheumatic drug (csDMARD) use in...  相似文献   
3.
Prevention Science - There is evidence that universal school-based mindfulness training (SBMT) can have positive effects for young people. However, it is unknown who benefits most from such...  相似文献   
4.
5.
6.
BackgroundResearch into oral health care for older people has shown that dental care in general decreases with increasing age and frailty and, therefore, oral health care provision may be complex. The aim of this study is to identify the oral health care dentists provide to community-dwelling older people and which barriers they experience in doing this.MethodsIn this cross-sectional study, a representative sample of dentists in the Netherlands was asked to prospectively select one older patient and describe this patient using a specially developed registration form; the patient was requested to fill out a questionnaire. The relationship between experienced barriers in providing oral health care to older patients and characteristics of the dentists and the patients was studied by means univariate and multivariate logistic regression analysis.ResultsIn total, 923 dentists were asked to participate in the study. Data were available for 39.4% dentist–patient pairs. In most cases (87.4%), oral health care was focussed on conservation of the dentition. In all, 14.0% of the dentists experienced barriers in providing oral health care for older people. Some patient factors increase the risk of experiencing barriers, eg, the more difficult behaviour of older patients and the greater disease burden.ConclusionsOral health care was mostly focussed on conservation of the dentition, and dentists especially experience barriers in oral health provision to older patients if they are already frail.  相似文献   
7.
8.
European Child & Adolescent Psychiatry - Substance abuse is a significant public health concern that disproportionately burdens males and low-income communities. This study examined (1)...  相似文献   
9.
The Earth’s mean surface temperature is already approximately 1.1°C higher than pre-industrial levels. Exceeding a mean 1.5°C rise by 2050 will make global adaptation to the consequences of climate change less possible. To protect public health, anaesthesia providers need to reduce the contribution their practice makes to global warming. We convened a Working Group of 45 anaesthesia providers with a recognised interest in sustainability, and used a three-stage modified Delphi consensus process to agree on principles of environmentally sustainable anaesthesia that are achievable worldwide. The Working Group agreed on the following three important underlying statements: patient safety should not be compromised by sustainable anaesthetic practices; high-, middle- and low-income countries should support each other appropriately in delivering sustainable healthcare (including anaesthesia); and healthcare systems should be mandated to reduce their contribution to global warming. We set out seven fundamental principles to guide anaesthesia providers in the move to environmentally sustainable practice, including: choice of medications and equipment; minimising waste and overuse of resources; and addressing environmental sustainability in anaesthetists’ education, research, quality improvement and local healthcare leadership activities. These changes are achievable with minimal material resource and financial investment, and should undergo re-evaluation and updates as better evidence is published. This paper discusses each principle individually, and directs readers towards further important references.  相似文献   
10.
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