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   4970341篇
  免费   397872篇
  国内免费   19265篇
耳鼻咽喉   69698篇
儿科学   158617篇
妇产科学   130425篇
基础医学   745027篇
口腔科学   137801篇
临床医学   459268篇
内科学   904549篇
皮肤病学   117520篇
神经病学   415310篇
特种医学   195240篇
外国民族医学   992篇
外科学   745223篇
综合类   150526篇
现状与发展   39篇
一般理论   2812篇
预防医学   414352篇
眼科学   116695篇
药学   357093篇
  76篇
中国医学   16420篇
肿瘤学   249795篇
  2021年   59398篇
  2019年   60685篇
  2018年   77693篇
  2017年   59705篇
  2016年   65878篇
  2015年   79284篇
  2014年   114422篇
  2013年   180165篇
  2012年   144794篇
  2011年   152982篇
  2010年   134522篇
  2009年   133963篇
  2008年   136748篇
  2007年   146329篇
  2006年   153577篇
  2005年   147484篇
  2004年   147266篇
  2003年   136889篇
  2002年   125229篇
  2001年   197887篇
  2000年   194794篇
  1999年   174741篇
  1998年   76132篇
  1997年   70831篇
  1996年   68946篇
  1995年   64518篇
  1994年   58301篇
  1993年   54103篇
  1992年   128655篇
  1991年   123465篇
  1990年   118905篇
  1989年   115409篇
  1988年   106314篇
  1987年   104369篇
  1986年   98447篇
  1985年   95849篇
  1984年   77799篇
  1983年   68463篇
  1982年   51631篇
  1981年   47714篇
  1980年   44731篇
  1979年   67693篇
  1978年   53043篇
  1977年   46607篇
  1976年   43239篇
  1975年   44061篇
  1974年   48992篇
  1973年   46929篇
  1972年   43931篇
  1971年   40619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