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   3153425篇
  免费   228445篇
  国内免费   8758篇
耳鼻咽喉   43692篇
儿科学   101745篇
妇产科学   88238篇
基础医学   444571篇
口腔科学   88298篇
临床医学   285064篇
内科学   616245篇
皮肤病学   73556篇
神经病学   258083篇
特种医学   122175篇
外国民族医学   884篇
外科学   475165篇
综合类   68989篇
现状与发展   7篇
一般理论   1159篇
预防医学   243039篇
眼科学   71628篇
药学   231453篇
  8篇
中国医学   6390篇
肿瘤学   170239篇
  2018年   33596篇
  2017年   25920篇
  2016年   29963篇
  2015年   34001篇
  2014年   47079篇
  2013年   71110篇
  2012年   94139篇
  2011年   99435篇
  2010年   59809篇
  2009年   57252篇
  2008年   93067篇
  2007年   99305篇
  2006年   100817篇
  2005年   97010篇
  2004年   93798篇
  2003年   90739篇
  2002年   87411篇
  2001年   147300篇
  2000年   150646篇
  1999年   127332篇
  1998年   37135篇
  1997年   33159篇
  1996年   33153篇
  1995年   32033篇
  1994年   29552篇
  1993年   27753篇
  1992年   100647篇
  1991年   97101篇
  1990年   94304篇
  1989年   91159篇
  1988年   83816篇
  1987年   82345篇
  1986年   77409篇
  1985年   74060篇
  1984年   55626篇
  1983年   47364篇
  1982年   28552篇
  1981年   25702篇
  1979年   50708篇
  1978年   36175篇
  1977年   30648篇
  1976年   28374篇
  1975年   30402篇
  1974年   36325篇
  1973年   34635篇
  1972年   32665篇
  1971年   30276篇
  1970年   28179篇
  1969年   27184篇
  1968年   24930篇
排序方式: 共有10000条查询结果,搜索用时 9 毫秒
111.
Obtaining accurate assessment data from adolescents in treatment aids clinical decision making and facilitates more accurate outcome evaluations. However, findings could be biased due to underreported substance use and mental health symptoms. This article compares self-reports of youth in non-White matched client–assessor dyads and those in nonmatched dyads. There were no differences on self-reported substance use, but matched youth reported significantly fewer attention deficit/hyperactivity disorder symptoms versus the comparison group. One possible reason for these findings is the effect of in-group stereotype threat. Future studies should examine the potential effect that in-group stereotyping and perceived racism have on the therapeutic relationship.  相似文献   
112.
113.
114.
115.
116.
While peer support has been investigated in multiple clinical contexts, its application to the postpartum setting is unknown. The aim was to assess acceptability of a postpartum peer support program for women with diabetes. Observational survey-based needs assessment of forty low-income women with diabetes, receiving care at a major medical institution. Mean age and gravidity were 30.7 years and 3.15 ± 1.67 respectively. 45 % expressed interest in a “buddy.” There was no significant difference between groups desiring and not desiring this program. A majority of respondents desired telephone, text messaging, and in-person contacts (79.2, 72.1, 83.8 %), with 72.5 % of patients desiring diabetes-related activities during clinic waiting time. Many women desire a postpartum diabetes reciprocal peer program for support outside of clinician visits. Patients are receptive to educational services during their wait and outside of clinic time, a potentially valuable opportunity to share important health information.  相似文献   
117.
118.
At this study a multi-criteria model was developed to examine the available procedures, techniques and methods of handling infectious waste in the large healthcare unit of University Regional General Hospital of Patras, Western Greece. Particularly, this study examined the: a) current legislation and Directives issued for medical waste management at Greece and among the other EU-members, b) contribution of healthcare wastes (HCW) generation rate on social and economic parameters in selected European countries, c) available procedures, techniques, and methods upon the disposal of infectious wastes at the healthcare studied, and, d) propositions for integrated management of such hazardous wastes. Specifically, the Analytic Hierarchy Process (AHP) methodology was applied under pair wise comparison matrices in two stages: 1) the scale factors and the indicators, and 2) the criteria and their sub–criteria. The assessment of these pair wise matrices included the indicators and the sub–criteria. Subsequently, two pair wise comparison matrices, upon a) the “Fulfillment of environmental objectives” indicator and b) the “Energy consumption” sub criterion, were denoted. The AHP methodology yielded good results; however there is still space of improving the environmental performance. The normalized relative weights obtained for the criteria and sub criteria motivated specific actions that have to be handled. Particularly, the results indicated a very good value in environmental management criteria due the values obtained for the commitment towards the environmental policy standards and the waste management procedures. However, further improvements on staff awareness (such as development programs to enhance sensitivity) and more green purchasing suppliers, should be further addressed.  相似文献   
119.
120.
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