首页 | 官方网站   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   7141篇
  免费   590篇
  国内免费   35篇
医药卫生   7766篇
  2023年   38篇
  2022年   43篇
  2021年   128篇
  2020年   96篇
  2019年   153篇
  2018年   164篇
  2017年   132篇
  2016年   131篇
  2015年   148篇
  2014年   237篇
  2013年   447篇
  2012年   505篇
  2011年   487篇
  2010年   287篇
  2009年   272篇
  2008年   415篇
  2007年   514篇
  2006年   458篇
  2005年   418篇
  2004年   402篇
  2003年   384篇
  2002年   344篇
  2001年   64篇
  2000年   53篇
  1999年   83篇
  1998年   95篇
  1997年   88篇
  1996年   68篇
  1995年   68篇
  1994年   65篇
  1993年   39篇
  1992年   53篇
  1991年   45篇
  1990年   41篇
  1989年   52篇
  1988年   58篇
  1987年   50篇
  1986年   49篇
  1985年   48篇
  1984年   47篇
  1983年   47篇
  1982年   46篇
  1981年   42篇
  1980年   37篇
  1979年   21篇
  1978年   20篇
  1977年   21篇
  1975年   18篇
  1974年   25篇
  1973年   24篇
排序方式: 共有7766条查询结果,搜索用时 15 毫秒
131.
132.
133.
134.
Objectives : This review aimed to identify free, high‐quality, smoking cessation mobile applications (apps) that adhere to Australian smoking cessation treatment guidelines. Methods : A systematic search of smoking cessation apps was conducted using Google. The technical quality of relevant apps was rated using the Mobile Application Rating Scale. The content of apps identified as high quality was assessed for adherence to smoking cessation treatment guidelines. Results : 112 relevant apps were identified. The majority were of poor technical quality and only six ‘high‐quality’ apps were identified. These apps adhered to Australian treatment guidelines in part. The efficacy of two apps had been previously evaluated. Conclusions : In lieu of more substantial research in this area, it is suggested that the high‐quality apps identified in this review may be more likely than other available apps to encourage smoking cessation. Implications for public health : Smoking cessation apps have the potential to address many barriers that prevent smoking cessation support being provided; however few high‐quality smoking cessation apps are currently available in Australia, very few have been evaluated and the app market is extremely volatile. More research to evaluate smoking cessation apps, and sustained funding for evidence‐based apps, is needed.  相似文献   
135.
136.
In brief: Three tennis players had vague wrist pain when hitting the ball; all three were using the same racket model. Results of physical examination of the three patients were unremarkable, but x-rays of the tennis rackets showed a ‘fracture’ in the handle weights. Replacement of the racket with an identical new model relieved the symptoms in all the patients.  相似文献   
137.
138.
139.
140.
In 1894, John H. Patterson of the National Cash Register Company in Dayton, Ohio, introduced morning and afternoon exercise breaks for his employees. Ten years later he installed a gym on the fourth floor, and in 1911, he opened a 325-acre park for his employees. Every fall Americans watch the results of another company fitness program: the Green Bay Packers, originally an employee team sponsored by the Indian Packing Company in Green Bay, Wisconsin.

But it wasn't until about ten years ago that industry fitness programs really began to grow – in number and variety. They range from sessions led by interested employees to carefully controlled projects under full-time fitness directors. The facilities might be a local park or an elaborately equipped company gym. But reporters for The Physician and Sportsmedicine found that the programs had one theory in common: Increased fitness means increased production.  相似文献   
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-23

京公网安备 11010802026262号