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   2366043篇
  免费   172480篇
  国内免费   3390篇
耳鼻咽喉   32294篇
儿科学   76327篇
妇产科学   63050篇
基础医学   350373篇
口腔科学   64016篇
临床医学   212783篇
内科学   460931篇
皮肤病学   51923篇
神经病学   186799篇
特种医学   88485篇
外国民族医学   489篇
外科学   356245篇
综合类   47769篇
现状与发展   12篇
一般理论   858篇
预防医学   184007篇
眼科学   54808篇
药学   175980篇
  11篇
中国医学   4616篇
肿瘤学   130137篇
  2021年   19556篇
  2019年   19986篇
  2018年   27591篇
  2017年   20705篇
  2016年   23111篇
  2015年   26079篇
  2014年   36666篇
  2013年   54737篇
  2012年   75765篇
  2011年   80547篇
  2010年   47668篇
  2009年   45083篇
  2008年   75513篇
  2007年   80398篇
  2006年   81200篇
  2005年   78626篇
  2004年   75166篇
  2003年   72410篇
  2002年   70043篇
  2001年   108843篇
  2000年   111540篇
  1999年   93621篇
  1998年   27118篇
  1997年   23782篇
  1996年   24148篇
  1995年   22813篇
  1994年   20975篇
  1993年   19805篇
  1992年   72068篇
  1991年   70138篇
  1990年   68463篇
  1989年   65719篇
  1988年   60368篇
  1987年   59197篇
  1986年   55272篇
  1985年   53077篇
  1984年   39396篇
  1983年   33478篇
  1982年   19955篇
  1979年   35926篇
  1978年   25717篇
  1977年   21295篇
  1976年   20399篇
  1975年   21869篇
  1974年   26202篇
  1973年   24856篇
  1972年   23249篇
  1971年   22061篇
  1970年   20278篇
  1969年   19343篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
92.
93.
94.
As countries implement Article 11 of the World Health Organization (WHO) Framework Convention on Tobacco Control, graphic warning labels that use images of people and their body parts to illustrate the consequences of smoking are being added to cigarette packs. According to exemplification theory, these case examples—exemplars—can shape perceptions about risk and may resonate differently among demographic subpopulations. Drawing on data from eight focus groups (N = 63) with smokers and nonsmokers from vulnerable populations, this qualitative study explores whether people considered exemplars in their reactions to and evaluations of U.S. graphic health warning labels initially proposed by the Food and Drug Administration. Participants made reference to prior and concurrent mass media messages and exemplars during the focus groups and used demographic cues in making sense of the images on the warning labels. Participants were particularly sensitive to age of the exemplars and how it might affect label effectiveness and beliefs about smoking. Race and socioeconomic status also were salient for some participants. We recommend that exemplars and exemplification be considered when selecting and evaluating graphic health warnings for tobacco labels and associated media campaigns.  相似文献   
95.
96.
97.
98.
Objective Consensus that enhanced teamwork is necessary for efficient and effective primary care delivery is growing. We sought to identify how electronic health records (EHRs) facilitate and pose challenges to primary care teams as well as how practices are overcoming these challenges.Methods Practices in this qualitative study were selected from those recognized as patient-centered medical homes via the National Committee for Quality Assurance 2011 tool, which included a section on practice teamwork. We interviewed 63 respondents, ranging from physicians to front-desk staff, from 27 primary care practices ranging in size, type, geography, and population size.Results EHRs were found to facilitate communication and task delegation in primary care teams through instant messaging, task management software, and the ability to create evidence-based templates for symptom-specific data collection from patients by medical assistants and nurses (which can offload work from physicians). Areas where respondents felt that electronic medical record EHR functionalities were weakest and posed challenges to teamwork included the lack of integrated care manager software and care plans in EHRs, poor practice registry functionality and interoperability, and inadequate ease of tracking patient data in the EHR over time.Discussion Practices developed solutions for some of the challenges they faced when attempting to use EHRs to support teamwork but wanted more permanent vendor and policy solutions for other challenges.Conclusions EHR vendors in the United States need to work alongside practicing primary care teams to create more clinically useful EHRs that support dynamic care plans, integrated care management software, more functional and interoperable practice registries, and greater ease of data tracking over time.  相似文献   
99.
100.
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