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   3596849篇
  免费   309005篇
  国内免费   14793篇
耳鼻咽喉   48778篇
儿科学   114838篇
妇产科学   94235篇
基础医学   570855篇
口腔科学   95603篇
临床医学   323914篇
内科学   645684篇
皮肤病学   94557篇
神经病学   310409篇
特种医学   140661篇
外国民族医学   512篇
外科学   551709篇
综合类   109171篇
现状与发展   24篇
一般理论   2406篇
预防医学   301946篇
眼科学   82154篇
药学   247791篇
  24篇
中国医学   10936篇
肿瘤学   174440篇
  2021年   56277篇
  2020年   35827篇
  2019年   59039篇
  2018年   72762篇
  2017年   55654篇
  2016年   61567篇
  2015年   75466篇
  2014年   109941篇
  2013年   175487篇
  2012年   103663篇
  2011年   104541篇
  2010年   120035篇
  2009年   124136篇
  2008年   91100篇
  2007年   95122篇
  2006年   105178篇
  2005年   100335篇
  2004年   101971篇
  2003年   92412篇
  2002年   81859篇
  2001年   120390篇
  2000年   113780篇
  1999年   109233篇
  1998年   67214篇
  1997年   64622篇
  1996年   62379篇
  1995年   57815篇
  1994年   51733篇
  1993年   48255篇
  1992年   75225篇
  1991年   70906篇
  1990年   66511篇
  1989年   65286篇
  1988年   60192篇
  1987年   58832篇
  1986年   55364篇
  1985年   55082篇
  1984年   49954篇
  1983年   45476篇
  1982年   42381篇
  1981年   39717篇
  1980年   37385篇
  1979年   40576篇
  1978年   35839篇
  1977年   32517篇
  1976年   29825篇
  1975年   28225篇
  1974年   29355篇
  1973年   28355篇
  1972年   26531篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
951.
Background: The opioid addiction and overdose crisis continues to ravage communities across the U.S. Maintenance pharmacotherapy using buprenorphine or methadone is the most effective intervention for Opioid Use Disorder (OUD), yet few have immediate and sustained access to these medications. Objectives: To address lack of medication access for people with OUD, the Missouri Department of Mental Health began implementing a Medication First (Med First) treatment approach in its publicly-funded system of comprehensive substance use disorder treatment programs. Methods: This Perspective describes the four principles of Med First, which are based on evidence-based guidelines. It draws conceptual comparisons between the Housing First approach to chronic homelessness and the Med First approach to pharmacotherapy for OUD, and compares state certification standards for substance use disorder (SUD) treatment (the traditional approach) to Med First guidelines for OUD treatment. Finally, the Perspective details how Med First principles have been practically implemented. Results: Med First principles emphasize timely access to maintenance pharmacotherapy without requiring psychosocial services or discontinuation for any reason other than harm to the client. Early results regarding medication utilization and treatment retention are promising. Feedback from providers has been largely favorable, though clinical- and system-level obstacles to effective OUD treatment remain. Conclusion: Like the Housing First model, Medication First is designed to decrease human suffering and activate the strengths and capacities of people in need. It draws on decades of research and facilitates partnerships between psychosocial and medical treatment providers to offer effective and life-saving care to persons with OUD.  相似文献   
952.
Purpose: Non-ambulatory persons with cerebral palsy are prone to low bone mineral density. In ambulatory persons with cerebral palsy, bone mineral density deficits are expected to be small or absent, but a consensus conclusion is lacking. In this systematic review bone mineral density in ambulatory persons with cerebral palsy (Gross Motor Function Classification Scales I–III) was studied.

Materials and methods: Medline, Embase, and Web of Science were searched. According to international guidelines, low bone mineral density was defined as Z-score?≤??2.0. In addition, we focused on Z-score?≤??1.0 because this may indicate a tendency towards low bone mineral density.

Results: We included 16 studies, comprising 465 patients aged 1–65?years. Moderate and conflicting evidence for low bone mineral density (Z-score?≤??2.0) was found for several body parts (total proximal femur, total body, distal femur, lumbar spine) in children with Gross Motor Function Classification Scales II and III. We found no evidence for low bone mineral density in children with Gross Motor Function Classification Scale I or adults, although there was a tendency towards low bone mineral density (Z-score?≤??1.0) for several body parts.

Conclusions: Although more high-quality research is needed, results indicate that deficits in bone mineral density are not restricted to non-ambulatory people with cerebral palsy.

  • Implications for Rehabilitation
  • Although more high-quality research is needed, including adults and fracture risk assessment, the current study indicates that deficits in bone mineral density are not restricted to non-ambulatory people with CP.

  • Health care professionals should be aware that optimal nutrition, supplements on indication, and an active lifestyle, preferably with weight-bearing activities, are important in ambulatory people with CP, also from a bone quality point-of-view.

  • If indicated, medication and fall prevention training should be prescribed.

  相似文献   
953.
954.
955.
956.
957.
958.
959.
960.
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