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   2325597篇
  免费   188062篇
  国内免费   7485篇
耳鼻咽喉   31984篇
儿科学   78345篇
妇产科学   64333篇
基础医学   324377篇
口腔科学   63945篇
临床医学   208400篇
内科学   468515篇
皮肤病学   53598篇
神经病学   187515篇
特种医学   94774篇
外国民族医学   883篇
外科学   361787篇
综合类   53121篇
现状与发展   3篇
一般理论   747篇
预防医学   182680篇
眼科学   50914篇
药学   168703篇
  7篇
中国医学   4049篇
肿瘤学   122464篇
  2018年   23745篇
  2017年   18312篇
  2016年   21265篇
  2015年   23886篇
  2014年   33300篇
  2013年   50449篇
  2012年   65093篇
  2011年   69658篇
  2010年   42685篇
  2009年   41197篇
  2008年   65781篇
  2007年   70450篇
  2006年   71512篇
  2005年   69314篇
  2004年   66886篇
  2003年   65019篇
  2002年   62689篇
  2001年   112362篇
  2000年   116153篇
  1999年   97447篇
  1998年   27110篇
  1997年   24178篇
  1996年   25123篇
  1995年   26035篇
  1994年   24453篇
  1993年   22782篇
  1992年   79820篇
  1991年   78105篇
  1990年   75495篇
  1989年   72120篇
  1988年   66550篇
  1987年   65342篇
  1986年   61352篇
  1985年   59048篇
  1984年   44852篇
  1983年   37721篇
  1982年   22864篇
  1981年   20636篇
  1980年   19011篇
  1979年   40350篇
  1978年   28757篇
  1977年   24411篇
  1976年   22513篇
  1975年   23911篇
  1974年   28122篇
  1973年   27016篇
  1972年   24911篇
  1971年   22887篇
  1970年   21213篇
  1969年   19568篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Modified-release opioids are often prescribed for the management of moderate to severe acute pain following total hip and knee arthroplasty, despite recommendations against their use due to increasing concerns regarding harm. The primary objective of this multicentre study was to examine the impact of modified-release opioid use on the incidence of opioid-related adverse events compared with immediate-release opioid use, among adult inpatients following total hip or knee arthroplasty. Data for total hip and knee arthroplasty inpatients receiving an opioid analgesic for postoperative analgesia during hospitalisation were collected from electronic medical records of three tertiary metropolitan hospitals in Australia. The primary outcome was the incidence of opioid-related adverse events during hospital admission. Patients who received modified with or without immediate-release opioids were matched to those receiving immediate-release opioids only (1:1) using nearest neighbour propensity score matching with patient and clinical characteristics as covariates. This included total opioid dose received. In the matched cohorts, patients given modified-release opioids (n = 347) experienced a higher incidence of opioid-related adverse events overall, compared with those given immediate-release opioids only (20.5%, 71/347 vs. 12.7%, 44/347; difference in proportions 7.8% [95%CI 2.3–13.3%]). Modified-release opioid use was associated with an increased risk of harm when used for acute pain during hospitalisation after total hip or knee arthroplasty.  相似文献   
2.
3.
Neuroscience and Behavioral Physiology - We present here results from analysis of the formation of brain bioelectrical activity in children and adolescents living in the northern region of Russia...  相似文献   
4.
5.
6.
7.
8.
9.
Maternal and Child Health Journal - Early life exposures can have an impact on a child’s developmental trajectory and children born late preterm (34–36 weeks gestational age)...  相似文献   
10.
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   
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