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   5467633篇
  免费   421851篇
  国内免费   16604篇
耳鼻咽喉   78177篇
儿科学   177400篇
妇产科学   146825篇
基础医学   807470篇
口腔科学   155904篇
临床医学   502830篇
内科学   998298篇
皮肤病学   128108篇
神经病学   453114篇
特种医学   215302篇
外国民族医学   1281篇
外科学   822000篇
综合类   151869篇
现状与发展   24篇
一般理论   2968篇
预防医学   455237篇
眼科学   130857篇
药学   393295篇
  24篇
中国医学   14177篇
肿瘤学   270928篇
  2021年   57985篇
  2019年   60390篇
  2018年   78846篇
  2017年   60147篇
  2016年   67035篇
  2015年   79084篇
  2014年   113871篇
  2013年   180503篇
  2012年   156292篇
  2011年   166958篇
  2010年   136982篇
  2009年   135151篇
  2008年   151885篇
  2007年   164420篇
  2006年   170955篇
  2005年   165346篇
  2004年   165451篇
  2003年   155301篇
  2002年   144092篇
  2001年   218317篇
  2000年   216118篇
  1999年   192301篇
  1998年   79008篇
  1997年   72727篇
  1996年   70729篇
  1995年   66237篇
  1994年   60223篇
  1993年   55712篇
  1992年   143997篇
  1991年   139267篇
  1990年   134974篇
  1989年   130902篇
  1988年   121141篇
  1987年   118909篇
  1986年   112738篇
  1985年   109643篇
  1984年   87408篇
  1983年   76784篇
  1982年   55187篇
  1981年   50717篇
  1980年   47637篇
  1979年   78395篇
  1978年   59943篇
  1977年   52427篇
  1976年   48844篇
  1975年   51007篇
  1974年   57718篇
  1973年   55412篇
  1972年   52281篇
  1971年   48383篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
62.
63.
64.
65.
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   
66.
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   
67.
68.
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   
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