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   3781984篇
  免费   312821篇
  国内免费   14680篇
耳鼻咽喉   50914篇
儿科学   119970篇
妇产科学   97889篇
基础医学   592723篇
口腔科学   102404篇
临床医学   341694篇
内科学   676572篇
皮肤病学   98800篇
神经病学   318385篇
特种医学   147525篇
外国民族医学   262篇
外科学   583823篇
综合类   114053篇
现状与发展   23篇
一般理论   2407篇
预防医学   310539篇
眼科学   89490篇
药学   261884篇
  25篇
中国医学   11434篇
肿瘤学   188669篇
  2021年   55917篇
  2020年   35584篇
  2019年   58733篇
  2018年   73152篇
  2017年   55472篇
  2016年   61384篇
  2015年   75023篇
  2014年   109380篇
  2013年   174853篇
  2012年   106626篇
  2011年   108651篇
  2010年   121391篇
  2009年   124167篇
  2008年   94764篇
  2007年   99442篇
  2006年   108740篇
  2005年   103410篇
  2004年   105066篇
  2003年   94710篇
  2002年   84022篇
  2001年   136112篇
  2000年   129642篇
  1999年   122036篇
  1998年   68640篇
  1997年   65297篇
  1996年   63028篇
  1995年   58572篇
  1994年   52556篇
  1993年   48916篇
  1992年   85037篇
  1991年   80962篇
  1990年   76669篇
  1989年   75113篇
  1988年   69019篇
  1987年   67201篇
  1986年   63540篇
  1985年   62764篇
  1984年   54875篇
  1983年   49581篇
  1982年   43636篇
  1981年   40996篇
  1980年   38467篇
  1979年   44843篇
  1978年   38241篇
  1977年   34916篇
  1976年   31965篇
  1975年   30783篇
  1974年   32477篇
  1973年   31178篇
  1972年   29031篇
排序方式: 共有10000条查询结果,搜索用时 31 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