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   4228862篇
  免费   342097篇
  国内免费   13872篇
耳鼻咽喉   58781篇
儿科学   135504篇
妇产科学   111041篇
基础医学   653559篇
口腔科学   113883篇
临床医学   385863篇
内科学   763643篇
皮肤病学   106288篇
神经病学   351885篇
特种医学   164117篇
外国民族医学   505篇
外科学   648622篇
综合类   119615篇
现状与发展   23篇
一般理论   2601篇
预防医学   355692篇
眼科学   99099篇
药学   295679篇
  26篇
中国医学   11351篇
肿瘤学   207054篇
  2021年   55992篇
  2020年   35618篇
  2019年   58703篇
  2018年   74007篇
  2017年   56527篇
  2016年   62554篇
  2015年   75632篇
  2014年   110054篇
  2013年   175409篇
  2012年   122371篇
  2011年   128119篇
  2010年   125853篇
  2009年   127004篇
  2008年   114218篇
  2007年   121674篇
  2006年   130317篇
  2005年   125428篇
  2004年   125677篇
  2003年   116002篇
  2002年   105159篇
  2001年   149910篇
  2000年   144756篇
  1999年   134538篇
  1998年   70209篇
  1997年   66316篇
  1996年   64529篇
  1995年   59791篇
  1994年   53863篇
  1993年   50134篇
  1992年   96234篇
  1991年   92805篇
  1990年   89212篇
  1989年   86966篇
  1988年   80145篇
  1987年   78619篇
  1986年   73984篇
  1985年   73102篇
  1984年   61775篇
  1983年   55527篇
  1982年   46096篇
  1981年   43191篇
  1980年   40568篇
  1979年   53230篇
  1978年   44122篇
  1977年   38943篇
  1976年   36316篇
  1975年   36344篇
  1974年   39511篇
  1973年   37691篇
  1972年   35306篇
排序方式: 共有10000条查询结果,搜索用时 29 毫秒
991.
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   
992.
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   
993.
994.
995.
996.
997.
998.
999.
1000.
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