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   486854篇
  免费   21419篇
  国内免费   964篇
耳鼻咽喉   6814篇
儿科学   17327篇
妇产科学   15843篇
基础医学   70173篇
口腔科学   13027篇
临床医学   39161篇
内科学   89584篇
皮肤病学   10657篇
神经病学   32831篇
特种医学   22084篇
外国民族医学   139篇
外科学   74981篇
综合类   9039篇
现状与发展   1篇
一般理论   169篇
预防医学   35946篇
眼科学   11040篇
药学   34504篇
  30篇
中国医学   964篇
肿瘤学   24923篇
  2018年   7733篇
  2017年   6845篇
  2016年   6762篇
  2015年   8887篇
  2014年   9474篇
  2013年   11442篇
  2012年   19202篇
  2011年   14224篇
  2010年   8783篇
  2009年   9679篇
  2008年   10870篇
  2007年   12401篇
  2006年   12448篇
  2005年   19954篇
  2004年   21007篇
  2003年   16135篇
  2002年   11018篇
  2001年   17222篇
  2000年   15250篇
  1999年   16701篇
  1998年   3589篇
  1997年   3093篇
  1996年   2986篇
  1995年   2900篇
  1992年   14481篇
  1991年   14822篇
  1990年   14845篇
  1989年   14381篇
  1988年   13146篇
  1987年   12712篇
  1986年   12161篇
  1985年   11274篇
  1984年   8049篇
  1983年   6783篇
  1982年   3413篇
  1980年   2794篇
  1979年   7939篇
  1978年   5415篇
  1977年   4399篇
  1976年   3938篇
  1975年   5143篇
  1974年   6227篇
  1973年   5939篇
  1972年   5708篇
  1971年   5523篇
  1970年   5240篇
  1969年   4916篇
  1968年   4655篇
  1967年   4419篇
  1966年   4054篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
52.
53.
54.
55.
56.
57.
Theory: Immersive simulation is a common mode of education for medical students. Observation of clinical simulations prior to participation is believed to be beneficial, though this is often a passive process. Active observation may be more beneficial. Hypotheses: The hypothesis tested in this study was that the active use of a simple checklist during observation of an immersive simulation would result in better participant performance in a subsequent scenario compared with passive observation alone. Methods: Medical students were randomized to either passive or active (with checklist) observation of an immersive simulation involving cardiac arrest prior to participating in their own simulation. Performance measures included time to cardiopulmonary resuscitation (CPR) and time to defibrillation and were compared between first and second scenarios as well as between passive and active observers. Results: Seventy-nine simulations involving 232 students were conducted. Mean time to CPR was 18 seconds (SD = 11.6) for those using the checklist and 24 seconds (SD = 15.8) for those who observed passively (M difference = 6 seconds), t(35) = 1.46, p =.153. Time to defibrillation was 94 seconds (SD = 26.4) for those using the checklist and 92 seconds (SD = 23.8) for those who observed passively (M difference = –2 seconds), t(38) =.21, p =.837. Time to CPR was 24 seconds (SD = 15.8) for passive observers and 31 seconds (SD = 21.0; M difference = 7 seconds), t(35) = 1.13, p =.265, for their first scenario counterparts. Time to CPR was 18 seconds (SD = 11.6) for active observers and 36 seconds (SD = 26.2; M difference = 18 seconds), t(24) = 2.81, p =.010, for their first scenario counterparts. Time to defibrillation was 92 seconds (SD = 23.8) for passive observers and 125 seconds (SD = 32.2; M difference = 33 seconds), t(33) = 3.63, p =.001, for their first scenario counterparts. Time to defibrillation was 94 seconds (SD = 26.4) for the active observers and 132 seconds (SD = 52.9; M difference = 38 seconds), t(28) =.46, p =.008, for their first scenario counterparts. Conclusions: Observation alone leads to improved performance in the management of a simulated cardiac arrest. The active use of a simple skills-based checklist during observation did not appear to improve performance over passive observation alone.  相似文献   
58.
59.
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   
60.
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