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   11025篇
  免费   525篇
  国内免费   47篇
耳鼻咽喉   157篇
儿科学   258篇
妇产科学   302篇
基础医学   1294篇
口腔科学   896篇
临床医学   580篇
内科学   2904篇
皮肤病学   177篇
神经病学   808篇
特种医学   255篇
外科学   1622篇
综合类   34篇
一般理论   2篇
预防医学   743篇
眼科学   306篇
药学   510篇
中国医学   29篇
肿瘤学   720篇
  2024年   11篇
  2023年   86篇
  2022年   194篇
  2021年   381篇
  2020年   197篇
  2019年   275篇
  2018年   341篇
  2017年   257篇
  2016年   291篇
  2015年   311篇
  2014年   492篇
  2013年   572篇
  2012年   994篇
  2011年   980篇
  2010年   523篇
  2009年   442篇
  2008年   766篇
  2007年   771篇
  2006年   687篇
  2005年   620篇
  2004年   581篇
  2003年   505篇
  2002年   457篇
  2001年   53篇
  2000年   40篇
  1999年   50篇
  1998年   72篇
  1997年   65篇
  1996年   54篇
  1995年   50篇
  1994年   56篇
  1993年   34篇
  1992年   24篇
  1991年   29篇
  1990年   22篇
  1989年   30篇
  1988年   19篇
  1987年   19篇
  1986年   21篇
  1985年   11篇
  1984年   15篇
  1983年   15篇
  1982年   31篇
  1981年   20篇
  1980年   16篇
  1979年   11篇
  1977年   13篇
  1976年   12篇
  1974年   8篇
  1973年   8篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
3.
4.
Journal of Digital Imaging - Vertebral Compression Fracture (VCF) occurs when the vertebral body partially collapses under the action of compressive forces. Non-traumatic VCFs can be secondary to...  相似文献   
5.
6.
7.

Background Drug-related problems are mostly preventable or predictable circumstances that may impact on health outcomes. Clinical pharmacy activities such as medication therapy management can identify and solve these problems, with potential to improve medication safety and effectiveness. Objective To evaluate ability of medication therapy management service to detect drug-related problems and prevent adverse drug events. This study also aimed to assess the risk factors for drugrelated problem occurrence. Setting Medical intensive care unit of a public tertiary hospital in Brazil. Methods Patients were evaluated by a clinical pharmacist, who provided medication therapy management service. Detected drug-related problems were categorized according to the Pharmaceutical Care Network Europe methodology and analyzed in multinomial regression to identify risk factors. Main outcome measure Potential risk factors for drug-related problem occurrence. Results The proposed medication therapy management service allowed detection of 170 drug-related problems that had potential to reach patients causing harm and other 50 unavoidable adverse events. Drug-related problems identified were more often associated with antibacterial use, caused by improper combinations or inadequate drug dosage. These problems required interventions that were accepted by the multidisciplinary team, resulting in more than 85% adherence and total problem solving. Main risk factors identified were previous diagnosis of kidney injury (OR?=?8.38), use of midazolam (OR?=?7.96), furosemide (OR?=?5.87) and vancomycin (OR?=?4.82). Conclusion Medication therapy management proved to be an effective method not only for drug-related problem detection, but also for adverse drug event prevention, contributing to improve patient safety.

  相似文献   
8.
9.
10.
Studies on the exposure of children to sugar-sweetened beverages (SSBs) at an early age may contribute to better understand the common causes and the temporal order of the relationships between obesity and asthma in early childhood. The objective of this study was to estimate the association between SSB and child asthma traits in the 2nd year of life, modeling direct and indirect pathways mediated by the highest BMI-z of the child and allergic inflammation. Data from the BRISA cohort, São Luís-MA, Brazil (n = 1140), were obtained from the baseline and from the follow-up performed at the 2nd year of life. The main explanatory variable was the calories from added sugars in SSBs as a percentage of the total daily energy intake. The outcome child asthma traits was a latent variable deduced from four indicators: medical diagnosis of asthma, wheezing, emergency visit due to intense wheezing, and medical diagnosis of rhinitis. A high percentage of daily calories from sugars added to SSBs was directly associated with higher values of child asthma traits (standardized coefficient (SC = 0.073; P = .030)). High levels of eosinophils were also directly associated with child asthma traits (SC = 0.118; P = .049). No mediation pathways were observed via greater BMI-z or eosinophil counts. Therefore, early exposure of children to SSB may contribute to increased risk of childhood asthma, preceding the link between sugar consumption and overweight/obesity, not yet evident in children in the first 2 years of life.  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