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   4356164篇
  免费   369663篇
  国内免费   14723篇
耳鼻咽喉   60775篇
儿科学   140127篇
妇产科学   115434篇
基础医学   667692篇
口腔科学   122972篇
临床医学   395487篇
内科学   788661篇
皮肤病学   105877篇
神经病学   368731篇
特种医学   175343篇
外国民族医学   742篇
外科学   666376篇
综合类   131833篇
现状与发展   24篇
一般理论   2605篇
预防医学   365499篇
眼科学   102035篇
药学   308479篇
  19篇
中国医学   11440篇
肿瘤学   210399篇
  2021年   55873篇
  2019年   58600篇
  2018年   73597篇
  2017年   55867篇
  2016年   61981篇
  2015年   75292篇
  2014年   109869篇
  2013年   175128篇
  2012年   117179篇
  2011年   121136篇
  2010年   123915篇
  2009年   126071篇
  2008年   108180篇
  2007年   114677篇
  2006年   124019篇
  2005年   118999篇
  2004年   120996篇
  2003年   111051篇
  2002年   100042篇
  2001年   159705篇
  2000年   155651篇
  1999年   143561篇
  1998年   71886篇
  1997年   68047篇
  1996年   66331篇
  1995年   62038篇
  1994年   56079篇
  1993年   52221篇
  1992年   108333篇
  1991年   104473篇
  1990年   100203篇
  1989年   97590篇
  1988年   90683篇
  1987年   89014篇
  1986年   84569篇
  1985年   83429篇
  1984年   69711篇
  1983年   61899篇
  1982年   49368篇
  1981年   45827篇
  1980年   43150篇
  1979年   61692篇
  1978年   49340篇
  1977年   43454篇
  1976年   40508篇
  1975年   40140篇
  1974年   44870篇
  1973年   43201篇
  1972年   40211篇
  1971年   37254篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
61.
62.
63.
64.
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   
65.
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   
66.
67.
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   
68.
69.
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