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   1344698篇
  免费   115889篇
  国内免费   6384篇
耳鼻咽喉   16895篇
儿科学   43445篇
妇产科学   36911篇
基础医学   184686篇
口腔科学   36490篇
临床医学   121556篇
内科学   279039篇
皮肤病学   32111篇
神经病学   111375篇
特种医学   56015篇
外国民族医学   274篇
外科学   211936篇
综合类   31987篇
现状与发展   3篇
一般理论   438篇
预防医学   107189篇
眼科学   28438篇
药学   94577篇
  5篇
中国医学   2189篇
肿瘤学   71412篇
  2018年   13752篇
  2017年   10860篇
  2016年   13123篇
  2015年   14649篇
  2014年   20396篇
  2013年   30450篇
  2012年   37214篇
  2011年   39825篇
  2010年   24945篇
  2009年   24450篇
  2008年   37213篇
  2007年   39645篇
  2006年   40699篇
  2005年   39364篇
  2004年   37574篇
  2003年   36571篇
  2002年   34506篇
  2001年   66195篇
  2000年   67981篇
  1999年   56501篇
  1998年   16125篇
  1997年   14307篇
  1996年   15344篇
  1995年   16285篇
  1994年   15129篇
  1993年   14189篇
  1992年   47215篇
  1991年   45888篇
  1990年   44119篇
  1989年   41945篇
  1988年   38865篇
  1987年   38186篇
  1986年   35958篇
  1985年   34784篇
  1984年   26465篇
  1983年   22157篇
  1982年   13930篇
  1981年   12523篇
  1980年   11752篇
  1979年   23596篇
  1978年   17088篇
  1977年   14409篇
  1976年   13230篇
  1975年   13777篇
  1974年   16181篇
  1973年   15464篇
  1972年   14223篇
  1971年   13095篇
  1970年   11921篇
  1969年   11157篇
排序方式: 共有10000条查询结果,搜索用时 171 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.
4.
5.
6.
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   
7.
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   
8.
Die Anaesthesiologie - Phantomschmerzen haben eine hohe Prävalenz nach Majoramputationen und sind mit einer zusätzlichen Einschränkung der Lebensqualität verbunden....  相似文献   
9.
During first outburst of COVID-19, several strategies had been applied for surgical oncology patients to minimize COVID-19 transmission. COVID-19 infection seemed to compromise survival and major complication rates of surgical oncology patients. However, survival, tumor progression and recurrence rates of surgical oncology patients were associated to the consequences of COVID-19 pandemic on their management. In addition, the severity of COVID-19 infections has been downgraded. Therefore, management of surgical oncology patients should be reconsidered.  相似文献   
10.
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