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   1494766篇
  免费   119790篇
  国内免费   15730篇
耳鼻咽喉   20486篇
儿科学   47099篇
妇产科学   39580篇
基础医学   207433篇
口腔科学   37582篇
临床医学   139232篇
内科学   291459篇
皮肤病学   30641篇
神经病学   112194篇
特种医学   59299篇
外国民族医学   755篇
外科学   220620篇
综合类   60356篇
现状与发展   49篇
一般理论   415篇
预防医学   108960篇
眼科学   34169篇
药学   117555篇
  159篇
中国医学   13126篇
肿瘤学   89117篇
  2021年   17005篇
  2020年   13220篇
  2019年   16436篇
  2018年   20852篇
  2017年   16730篇
  2016年   17339篇
  2015年   22160篇
  2014年   29530篇
  2013年   37760篇
  2012年   53031篇
  2011年   56699篇
  2010年   34191篇
  2009年   30889篇
  2008年   48962篇
  2007年   51597篇
  2006年   51439篇
  2005年   50491篇
  2004年   45835篇
  2003年   43734篇
  2002年   42001篇
  2001年   69042篇
  2000年   71654篇
  1999年   61856篇
  1998年   17781篇
  1997年   16441篇
  1996年   16015篇
  1995年   15876篇
  1994年   14881篇
  1993年   13166篇
  1992年   46502篇
  1991年   45220篇
  1990年   43672篇
  1989年   41361篇
  1988年   37988篇
  1987年   37207篇
  1986年   34392篇
  1985年   32921篇
  1984年   24546篇
  1983年   20540篇
  1982年   11872篇
  1979年   21507篇
  1978年   14890篇
  1977年   12577篇
  1976年   11748篇
  1975年   12671篇
  1974年   14742篇
  1973年   14177篇
  1972年   12999篇
  1971年   11775篇
  1970年   11099篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
101.
102.
103.
Due to the COVID-19 pandemic's consequences and the state of alarm, literature has shown that people worldwide have experienced severe stressors that have been associated with increased prevalence of emotional distress. In this study, we explored psychological distress (depression, anxiety, and somatization symptoms) using an online survey platform in a sample of 1,781 Spanish adults during the confinement due to COVID-19, relationships between distress and sleep problems, affect, pain, sleep, emotional regulation, gender, type of housing, history of psychopathology, and living alone during the confinement, and differences depending on demographic and psychological variables. Results showed that between 25% and 39% of the sample referred to clinically significant levels of distress. In addition, women showed higher levels of distress, negative affect, perception of pain, and cognitive reappraisal and lower levels of emotional suppression and sleep quality than men. A history of psychopathology, being younger, living alone or in a flat was associated with higher distress. Finally, the variables most strongly related to distress were negative and positive affect, levels of pain, sleep quality, and emotional suppression. Our results highlight the important role of emotional suppression, cognitive reappraisal, and loneliness and the impact of being a woman and younger in Spain during the COVID-19 pandemic. Therefore, it would be necessary to provide assessments of distress levels in these population groups and focus psychological preventive and therapeutic online interventions on expressing emotions and preventing loneliness.  相似文献   
104.
105.
106.
目的探讨品管圈对结直肠癌患者术后胃肠功能恢复时间的临床效果。方法选取2019年4月至5月间上海市健康医学院附属嘉定区中心医院收治的52例结直肠癌术后患者为改进前组,2019年6月至7月52例患者为改进后组。检查改进前组患者平均排气时间、排便时间及腹胀发生率,采用品管圈对改进后组患者进行干预,比较两组患者胃肠道功能和相关无形成果。结果改进后组患者排气时间、排便时间和腹胀发生率均低于改进前组,差异均有统计学意义(均P<0.05)。通过品管圈活动,圈员们责任心、自我价值、团队精神、科研能力、沟通能力和解决问题能力均提升。结论品管圈可缩短结直肠癌患者术后排气时间和排便时间,降低腹胀发生率,提高圈员综合素质,值得推广。  相似文献   
107.
108.
109.
IntroductionInterprofessional learning (IPL) is a vital aspect of training in radiation oncology professions, yet is rarely delivered to those professionals who work most closely together in clinical practice. Scenario-based learning using simulation facilities provides a unique opportunity to facilitate this learning and this project aimed to determine the impact and value of this initiative.MethodsSmall groups comprising post-graduate diploma pre-registration therapeutic radiographers, medical physics trainees and radiation oncology registrars were challenged with 4 plausible and challenging radiotherapy scenarios within an academic simulation centre. Pre- and post-event completion of the “Readiness for Interprofessional Learning Scale” measured impact and a Likert-style survey gathered feedback from participants.ResultsThe session increased participants' teamwork and collaboration skills as well as strengthening professional identities. Participants reported high levels of enjoyment related to collaborative working, communication and observing other professionals deploying their technical skills and specialist knowledge.ConclusionAlthough beneficial, simulated scenarios offering equal opportunities for engagement across the professions are challenging to plan and timetabling issues between the 3 groups present significant difficulties. The safe environment and unique opportunity for these groups to learn together was particularly well received and future oncology-specific simulated scenario sessions are planned with larger cohorts.Implications for practiceSimulated scenario training can be used to improve team working across the radiotherapy interprofessional team and may have wider use in other specialist interdisciplinary team development.  相似文献   
110.
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