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   4932814篇
  免费   393053篇
  国内免费   15597篇
耳鼻咽喉   69191篇
儿科学   158238篇
妇产科学   130157篇
基础医学   741394篇
口腔科学   137215篇
临床医学   454512篇
内科学   902038篇
皮肤病学   117139篇
神经病学   413874篇
特种医学   193515篇
外国民族医学   968篇
外科学   740423篇
综合类   139007篇
现状与发展   24篇
一般理论   2813篇
预防医学   413308篇
眼科学   115857篇
药学   351984篇
  26篇
中国医学   12988篇
肿瘤学   246793篇
  2021年   56917篇
  2019年   59379篇
  2018年   76204篇
  2017年   58446篇
  2016年   64812篇
  2015年   77286篇
  2014年   111730篇
  2013年   177462篇
  2012年   140389篇
  2011年   148286篇
  2010年   130989篇
  2009年   130994篇
  2008年   133579篇
  2007年   143401篇
  2006年   150969篇
  2005年   145214篇
  2004年   146004篇
  2003年   135826篇
  2002年   124459篇
  2001年   197258篇
  2000年   194208篇
  1999年   174306篇
  1998年   75864篇
  1997年   70580篇
  1996年   68762篇
  1995年   64337篇
  1994年   58178篇
  1993年   54002篇
  1992年   128567篇
  1991年   123389篇
  1990年   118837篇
  1989年   115371篇
  1988年   106267篇
  1987年   104326篇
  1986年   98415篇
  1985年   95830篇
  1984年   77790篇
  1983年   68465篇
  1982年   51628篇
  1981年   47709篇
  1980年   44733篇
  1979年   67695篇
  1978年   53054篇
  1977年   46617篇
  1976年   43247篇
  1975年   44066篇
  1974年   48999篇
  1973年   46936篇
  1972年   43932篇
  1971年   40626篇
排序方式: 共有10000条查询结果,搜索用时 15 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