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   4926891篇
  免费   393460篇
  国内免费   15635篇
耳鼻咽喉   69302篇
儿科学   158289篇
妇产科学   130169篇
基础医学   741067篇
口腔科学   137406篇
临床医学   453496篇
内科学   899561篇
皮肤病学   117248篇
神经病学   413829篇
特种医学   193798篇
外国民族医学   968篇
外科学   740606篇
综合类   138875篇
现状与发展   24篇
一般理论   2809篇
预防医学   409978篇
眼科学   115677篇
药学   352430篇
  21篇
中国医学   13027篇
肿瘤学   247406篇
  2021年   57064篇
  2019年   59469篇
  2018年   76327篇
  2017年   58197篇
  2016年   64695篇
  2015年   77128篇
  2014年   111658篇
  2013年   177448篇
  2012年   140897篇
  2011年   148862篇
  2010年   131386篇
  2009年   131327篇
  2008年   134131篇
  2007年   144108篇
  2006年   151696篇
  2005年   145955篇
  2004年   146761篇
  2003年   136528篇
  2002年   125193篇
  2001年   197470篇
  2000年   194428篇
  1999年   174527篇
  1998年   76050篇
  1997年   70725篇
  1996年   68881篇
  1995年   64446篇
  1994年   58272篇
  1993年   54074篇
  1992年   128736篇
  1991年   123526篇
  1990年   118937篇
  1989年   115520篇
  1988年   106393篇
  1987年   104446篇
  1986年   98508篇
  1985年   95903篇
  1984年   77853篇
  1983年   68510篇
  1982年   51661篇
  1981年   47658篇
  1980年   44289篇
  1979年   67370篇
  1978年   52741篇
  1977年   46196篇
  1976年   42886篇
  1975年   43756篇
  1974年   48756篇
  1973年   46738篇
  1972年   43833篇
  1971年   40504篇
排序方式: 共有10000条查询结果,搜索用时 312 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