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   3434163篇
  免费   293458篇
  国内免费   13297篇
耳鼻咽喉   46884篇
儿科学   109489篇
妇产科学   89772篇
基础医学   548606篇
口腔科学   93058篇
临床医学   316240篇
内科学   606336篇
皮肤病学   91390篇
神经病学   294987篇
特种医学   134092篇
外国民族医学   288篇
外科学   524980篇
综合类   102376篇
现状与发展   24篇
一般理论   2399篇
预防医学   294366篇
眼科学   78458篇
药学   235525篇
  23篇
中国医学   9341篇
肿瘤学   162284篇
  2021年   55044篇
  2020年   35237篇
  2019年   58097篇
  2018年   71669篇
  2017年   54411篇
  2016年   59795篇
  2015年   73922篇
  2014年   108141篇
  2013年   173390篇
  2012年   94795篇
  2011年   95374篇
  2010年   117367篇
  2009年   121727篇
  2008年   82403篇
  2007年   85948篇
  2006年   95839篇
  2005年   91503篇
  2004年   93069篇
  2003年   83725篇
  2002年   73518篇
  2001年   102626篇
  2000年   95221篇
  1999年   95342篇
  1998年   64741篇
  1997年   62778篇
  1996年   60938篇
  1995年   56320篇
  1994年   50548篇
  1993年   47246篇
  1992年   67630篇
  1991年   64864篇
  1990年   61475篇
  1989年   60622篇
  1988年   56456篇
  1987年   55217篇
  1986年   52650篇
  1985年   52234篇
  1984年   48172篇
  1983年   44338篇
  1982年   41721篇
  1981年   39437篇
  1980年   37168篇
  1979年   40671篇
  1978年   36271篇
  1977年   32842篇
  1976年   30129篇
  1975年   29012篇
  1974年   30499篇
  1973年   29612篇
  1972年   27866篇
排序方式: 共有10000条查询结果,搜索用时 15 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