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   2966993篇
  免费   216926篇
  国内免费   4420篇
耳鼻咽喉   41531篇
儿科学   92040篇
妇产科学   78982篇
基础医学   432798篇
口腔科学   84494篇
临床医学   266654篇
内科学   573982篇
皮肤病学   64495篇
神经病学   233632篇
特种医学   112397篇
外国民族医学   557篇
外科学   455485篇
综合类   60841篇
现状与发展   12篇
一般理论   1029篇
预防医学   224888篇
眼科学   69575篇
药学   223883篇
  14篇
中国医学   6025篇
肿瘤学   165025篇
  2019年   23015篇
  2018年   32259篇
  2017年   24395篇
  2016年   27442篇
  2015年   30858篇
  2014年   43417篇
  2013年   64965篇
  2012年   89363篇
  2011年   94722篇
  2010年   56316篇
  2009年   53394篇
  2008年   89848篇
  2007年   95563篇
  2006年   96889篇
  2005年   93819篇
  2004年   89905篇
  2003年   86661篇
  2002年   84233篇
  2001年   142743篇
  2000年   146752篇
  1999年   123319篇
  1998年   34155篇
  1997年   29893篇
  1996年   30154篇
  1995年   28464篇
  1994年   26245篇
  1993年   24558篇
  1992年   95494篇
  1991年   92643篇
  1990年   90459篇
  1989年   87253篇
  1988年   80063篇
  1987年   78505篇
  1986年   73293篇
  1985年   70570篇
  1984年   51852篇
  1983年   44146篇
  1982年   25287篇
  1979年   47191篇
  1978年   33185篇
  1977年   27806篇
  1976年   26026篇
  1975年   28176篇
  1974年   34019篇
  1973年   32259篇
  1972年   30329篇
  1971年   28800篇
  1970年   26805篇
  1969年   25513篇
  1968年   23248篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
61.
62.
While previous randomised controlled trials and meta-analyses offer only limited evidence for the effectiveness of cognitive rehabilitation, qualitative studies examining patient perspectives report more positive outcomes. This meta-synthesis of qualitative studies examined patient perspectives of cognitive rehabilitation for memory, attention, and executive function problems in people with multiple sclerosis. Using set eligibility criteria, we screened electronic databases, reference lists, and academic networks for relevant papers. Seven papers (195 participants) were selected. Two independent researchers conducted quality appraisals of papers. Data analysis, guided by the thematic synthesis approach, yielded six main themes. These suggested that patients benefitted from the group environment in rehabilitation. Cognitive rehabilitation facilitated the participants’ reflection and awareness of their cognitive deficits, and was associated with increased knowledge and understanding of their illness. Increased strategy use was reported and associated with improvements in cognitive functioning and greater confidence and perseverance. Participants reported emotional and social improvements, and felt more optimistic. Overall, these changes had a positive impact on participants’ quality of life. This synthesis of qualitative studies indicates that people with multiple sclerosis who experience cognitive deficits benefit from cognitive rehabilitation programmes. This finding must, however, be viewed in light of the limitations of this meta-synthesis. The meta-synthesis was registered in the PROSPERO database under CRD42017040148.  相似文献   
63.
64.
We report two British cases of liver abscess, due to Klebsiella pneumoniae and associated with synchronous infection elsewhere, which required liver resection for definitive treatment. They illustrate the geographic spread of aggressive K pneumoniae liver infection and demonstrate the importance of early aggressive treatment.  相似文献   
65.
Henna, derived from a combination of natural leaves and coloring additives, is a common decorative dye traditionally used in many Islamic religious celebrations. Para‐phenylenediamine (PPD), a major component of black henna tattoo, is a strong sensitizer and common allergen. We report a case of severe connubial allergic contact dermatitis after black henna heterotransfer in a girl.  相似文献   
66.
67.
68.
69.
Acne vulgaris (acne) is a chronic inflammatory disease of the sebaceous gland, characterized by follicular hyperkeratinization, excessive colonization by Propionibacterium acnes (Pacnes) as well as immune reactions and inflammation. Despite an armamentarium of topical treatments available including benzoyl peroxide, retinoids and azelaic acid, topical antibiotics in monotherapies, especially erythromycin and clindamycin, are still used in Europe to treat acne. This intensive use led to antimicrobial‐resistant P. acnes and staphylococci strains becoming one of the main health issues worldwide. This is an update on the current topical acne treatments available in Europe, their mechanism of action, their potential to induce antimicrobial resistance and their clinical efficacy and safety.  相似文献   
70.
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