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   2692351篇
  免费   241952篇
  国内免费   12694篇
耳鼻咽喉   37301篇
儿科学   85783篇
妇产科学   68576篇
基础医学   450557篇
口腔科学   71602篇
临床医学   240039篇
内科学   456818篇
皮肤病学   78742篇
神经病学   236268篇
特种医学   106919篇
外国民族医学   68篇
外科学   428786篇
综合类   86845篇
现状与发展   23篇
一般理论   2123篇
预防医学   227384篇
眼科学   60931篇
药学   180849篇
  17篇
中国医学   8315篇
肿瘤学   119051篇
  2021年   54292篇
  2020年   34683篇
  2019年   57561篇
  2018年   69494篇
  2017年   52459篇
  2016年   57830篇
  2015年   72412篇
  2014年   106526篇
  2013年   171528篇
  2012年   71770篇
  2011年   68761篇
  2010年   111169篇
  2009年   117109篇
  2008年   56239篇
  2007年   56696篇
  2006年   68361篇
  2005年   64093篇
  2004年   66527篇
  2003年   57893篇
  2002年   47891篇
  2001年   64023篇
  2000年   55398篇
  1999年   63431篇
  1998年   60763篇
  1997年   59738篇
  1996年   57392篇
  1995年   52920篇
  1994年   47144篇
  1993年   44160篇
  1992年   41459篇
  1991年   39323篇
  1990年   36651篇
  1989年   36956篇
  1988年   34384篇
  1987年   33457篇
  1986年   31896篇
  1985年   33077篇
  1984年   34365篇
  1983年   32750篇
  1982年   36800篇
  1981年   35120篇
  1980年   33163篇
  1979年   26278篇
  1978年   26435篇
  1977年   24938篇
  1976年   22677篇
  1975年   20685篇
  1974年   19775篇
  1973年   19106篇
  1972年   18047篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
981.
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   
982.
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   
983.
984.
985.
986.
987.
988.
989.
990.
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