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   4463958篇
  免费   365254篇
  国内免费   15536篇
耳鼻咽喉   61073篇
儿科学   142182篇
妇产科学   116633篇
基础医学   681067篇
口腔科学   124162篇
临床医学   407914篇
内科学   809928篇
皮肤病学   109233篇
神经病学   371802篇
特种医学   175714篇
外国民族医学   523篇
外科学   681815篇
综合类   133067篇
现状与发展   24篇
一般理论   2621篇
预防医学   372144篇
眼科学   105883篇
药学   313442篇
  29篇
中国医学   12565篇
肿瘤学   222927篇
  2021年   56437篇
  2020年   35864篇
  2019年   59127篇
  2018年   74872篇
  2017年   57165篇
  2016年   63353篇
  2015年   76482篇
  2014年   111025篇
  2013年   176643篇
  2012年   123938篇
  2011年   129346篇
  2010年   126733篇
  2009年   127731篇
  2008年   115084篇
  2007年   122745篇
  2006年   130809篇
  2005年   125661篇
  2004年   126821篇
  2003年   116399篇
  2002年   105029篇
  2001年   173630篇
  2000年   169445篇
  1999年   153711篇
  1998年   73362篇
  1997年   68737篇
  1996年   66820篇
  1995年   62485篇
  1994年   56429篇
  1993年   52443篇
  1992年   112191篇
  1991年   107861篇
  1990年   103212篇
  1989年   100402篇
  1988年   92473篇
  1987年   90498篇
  1986年   85570篇
  1985年   83878篇
  1984年   69736篇
  1983年   61693篇
  1982年   48930篇
  1981年   45455篇
  1980年   42684篇
  1979年   59511篇
  1978年   47832篇
  1977年   42590篇
  1976年   39351篇
  1975年   39143篇
  1974年   43003篇
  1973年   41449篇
  1972年   38666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.
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   
58.
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   
59.
60.
Cognitive Therapy and Research - Despite interest in psychological inflexibility as a marker of suicide risk, no measure of psychological inflexibility specific to SI exists. The present study...  相似文献   
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