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   1544052篇
  免费   117529篇
  国内免费   6765篇
耳鼻咽喉   18256篇
儿科学   50174篇
妇产科学   40741篇
基础医学   204473篇
口腔科学   39477篇
临床医学   135299篇
内科学   317497篇
皮肤病学   33393篇
神经病学   129455篇
特种医学   65360篇
外国民族医学   274篇
外科学   244111篇
综合类   34924篇
现状与发展   2篇
一般理论   447篇
预防医学   125675篇
眼科学   31432篇
药学   105577篇
  33篇
中国医学   2930篇
肿瘤学   88816篇
  2018年   35776篇
  2017年   28005篇
  2016年   32507篇
  2015年   17136篇
  2014年   23191篇
  2013年   33733篇
  2012年   46870篇
  2011年   62194篇
  2010年   44473篇
  2009年   36798篇
  2008年   57771篇
  2007年   62193篇
  2006年   43435篇
  2005年   43472篇
  2004年   42538篇
  2003年   42055篇
  2002年   38032篇
  2001年   66484篇
  2000年   68389篇
  1999年   56733篇
  1998年   16505篇
  1997年   14706篇
  1996年   15530篇
  1995年   16529篇
  1994年   15351篇
  1993年   14319篇
  1992年   47199篇
  1991年   45918篇
  1990年   44188篇
  1989年   41960篇
  1988年   38852篇
  1987年   38164篇
  1986年   35934篇
  1985年   34716篇
  1984年   26435篇
  1983年   22145篇
  1982年   13934篇
  1981年   12472篇
  1980年   11774篇
  1979年   23544篇
  1978年   17085篇
  1977年   14391篇
  1976年   13184篇
  1975年   13731篇
  1974年   16112篇
  1973年   15404篇
  1972年   14176篇
  1971年   13042篇
  1970年   11890篇
  1969年   11123篇
排序方式: 共有10000条查询结果,搜索用时 234 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.
9.
Die Anaesthesiologie - Phantomschmerzen haben eine hohe Prävalenz nach Majoramputationen und sind mit einer zusätzlichen Einschränkung der Lebensqualität verbunden....  相似文献   
10.
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   
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