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   5466691篇
  免费   421193篇
  国内免费   17133篇
耳鼻咽喉   78129篇
儿科学   176882篇
妇产科学   147604篇
基础医学   806447篇
口腔科学   155851篇
临床医学   502588篇
内科学   998660篇
皮肤病学   127548篇
神经病学   451214篇
特种医学   214273篇
外国民族医学   1266篇
外科学   820329篇
综合类   154037篇
现状与发展   24篇
一般理论   2967篇
预防医学   458205篇
眼科学   130831篇
药学   392960篇
  27篇
中国医学   14415篇
肿瘤学   270760篇
  2021年   57816篇
  2019年   60129篇
  2018年   78300篇
  2017年   60045篇
  2016年   66687篇
  2015年   78782篇
  2014年   113525篇
  2013年   179818篇
  2012年   154382篇
  2011年   165057篇
  2010年   136023篇
  2009年   134310篇
  2008年   149898篇
  2007年   162280篇
  2006年   168785篇
  2005年   162929篇
  2004年   163323篇
  2003年   152949篇
  2002年   141766篇
  2001年   219293篇
  2000年   217173篇
  1999年   193272篇
  1998年   79525篇
  1997年   73026篇
  1996年   70753篇
  1995年   66244篇
  1994年   60270篇
  1993年   55767篇
  1992年   144935篇
  1991年   140153篇
  1990年   135845篇
  1989年   131778篇
  1988年   122028篇
  1987年   119861篇
  1986年   113622篇
  1985年   110419篇
  1984年   87885篇
  1983年   77268篇
  1982年   55333篇
  1981年   50848篇
  1980年   47744篇
  1979年   78891篇
  1978年   60128篇
  1977年   52615篇
  1976年   49032篇
  1975年   51239篇
  1974年   58060篇
  1973年   55820篇
  1972年   52674篇
  1971年   48783篇
排序方式: 共有10000条查询结果,搜索用时 187 毫秒
51.
Abstract

Purpose

Financial hardship can be a major cause of distress among persons with cancer, resulting in chronic stress and impacting physical and emotional health. This paper provides an analysis of the lived experience of cancer patients’ financial hardship from diagnosis to post-treatment.  相似文献   
52.
53.
54.
55.
56.
57.
58.
Purpose

This paper describes the design of a theory-informed pragmatic intervention for adolescent perinatal depression in primary care in Nigeria.

Methods

We conducted Focus Group Discussions (FGDs) among 17 adolescent mothers and 25 maternal health care providers with experience in the receipt and provision of care for perinatal depression. The Consolidated Framework for Implementation Research (CFIR) was used to systematically examine the barriers and facilitators affecting adolescent mothers' use of an existing intervention package for depression. The Theoretical Domain Framework (TDF) and the Capability, Opportunity, Motivation, Behaviour (COM-B) model were used to analyze the results of the data across the five CFIR domains.

Results

FGD analysis revealed that care providers lacked knowledge on approaches to engage young mothers in treatment. Young mothers had poor treatment engagement, low social support, and little interest in parenting. A main characteristic of the newly designed intervention is the inclusion of age-appropriate psychoeducation supported with weekly mobile phone calls, to address treatment engagement and parenting behaviours of young mothers. Also in the outer setting, low social support from relatives was addressed with education, “as need arises” phone calls, and the involvement of "neighborhood mothers”. In the inner settings, care providers’ behaviour is addressed with training to increase their capacity to engage young mothers in treatment.

Conclusion

A theory-based approach helped develop an age-appropriate intervention package targeting depression and parenting skills deficit among perinatal adolescents in primary maternal care and in which a pragmatic use of mobile phone was key.

  相似文献   
59.
Major depressive disorder and other neuropsychiatric disorders are often managed with long-term use of antidepressant medication. Fluoxetine, an SSRI antidepressant, is widely used as a first-line treatment for neuropsychiatric disorders. However, fluoxetine has also been shown to increase the risk of metabolic diseases such as non-alcoholic fatty liver disease. Fluoxetine has been shown to increase hepatic lipid accumulation in vivo and in vitro. In addition, fluoxetine has been shown to alter the production of prostaglandins which have also been implicated in the development of non-alcoholic fatty liver disease. The goal of this study was to assess the effect of fluoxetine exposure on the prostaglandin biosynthetic pathway and lipid accumulation in a hepatic cell line (H4-II-E-C3 cells). Fluoxetine treatment increased mRNA expression of prostaglandin biosynthetic enzymes (Ptgs1, Ptgs2, and Ptgds), PPAR gamma (Pparg), and PPAR gamma downstream targets involved in fatty acid uptake (Cd36, Fatp2, and Fatp5) as well as production of 15-deoxy-Δ12,14PGJ2 a PPAR gamma ligand. The effects of fluoxetine to induce lipid accumulation were attenuated with a PTGS1 specific inhibitor (SC-560), whereas inhibition of PTGS2 had no effect. Moreover, SC-560 attenuated 15-deoxy-Δ12,14PGJ2 production and expression of PPAR gamma downstream target genes. Taken together these results suggest that fluoxetine-induced lipid abnormalities appear to be mediated via PTGS1 and its downstream product 15d-PGJ2 and suggest a novel therapeutic target to prevent some of the adverse effects of fluoxetine treatment.  相似文献   
60.
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