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   31470篇
  免费   3519篇
  国内免费   69篇
耳鼻咽喉   344篇
儿科学   820篇
妇产科学   807篇
基础医学   3964篇
口腔科学   842篇
临床医学   4099篇
内科学   6584篇
皮肤病学   641篇
神经病学   3122篇
特种医学   1300篇
外国民族医学   2篇
外科学   4269篇
综合类   776篇
一般理论   25篇
预防医学   2719篇
眼科学   864篇
药学   2026篇
  2篇
中国医学   42篇
肿瘤学   1810篇
  2023年   234篇
  2021年   451篇
  2020年   435篇
  2019年   432篇
  2018年   661篇
  2017年   523篇
  2016年   552篇
  2015年   582篇
  2014年   850篇
  2013年   1318篇
  2012年   1479篇
  2011年   1539篇
  2010年   943篇
  2009年   1025篇
  2008年   1414篇
  2007年   1503篇
  2006年   1577篇
  2005年   1530篇
  2004年   1501篇
  2003年   1374篇
  2002年   1403篇
  2001年   787篇
  2000年   743篇
  1999年   683篇
  1998年   418篇
  1997年   360篇
  1996年   334篇
  1995年   361篇
  1994年   287篇
  1993年   276篇
  1992年   524篇
  1991年   580篇
  1990年   526篇
  1989年   453篇
  1988年   478篇
  1987年   434篇
  1986年   443篇
  1985年   431篇
  1984年   388篇
  1983年   324篇
  1982年   248篇
  1981年   246篇
  1980年   236篇
  1979年   315篇
  1978年   263篇
  1977年   238篇
  1976年   210篇
  1975年   227篇
  1974年   250篇
  1972年   218篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Bowel diseases of prematurity, including necrotizing enterocolitis, are dreaded ailments of neonates. Early diagnosis is difficult, with clinical and radiographic findings often inconclusive. We present a novel use of contrast-enhanced ultrasound in detection of pediatric bowel disease. Early identification of compromised blood flow or an at-risk bowel can be quantitatively detected and monitored. This ability has implications for guidance of emerging therapies, allowing targeting of inflammation. These findings represent an advancement in detection of bowel disease in neonates.  相似文献   
2.
3.
4.
5.

Introduction

Physician communication impacts patient outcomes. However, communication skills, especially around difficult conversations, remain suboptimal, and there is no clear way to determine the validity of entrustment decisions. The aims of this study were to 1) describe the development of a simulation-based mastery learning (SBML) curriculum for breaking bad news (BBN) conversation skills and 2) set a defensible minimum passing standard (MPS) to ensure uniform skill acquisition among learners.

Innovation

An SBML BBN curriculum was developed for fourth-year medical students. An assessment tool was created to evaluate the acquisition of skills involved in a BBN conversation. Pilot testing was completed to confirm improvement in skill acquisition and set the MPS.

Outcomes

A BBN assessment tool containing a 15-item checklist and six scaled items was developed. Students' checklist performance improved significantly at post-test compared to baseline (mean 65.33%, SD = 12.09% vs mean 88.67%, SD = 9.45%, P < 0.001). Students were also significantly more likely to have at least a score of 4 (on a five-point scale) for the six scaled questions at post-test. The MPS was set at 80%, requiring a score of 12 items on the checklist and at least 4 of 5 for each scaled item. Using the MPS, 30% of students would require additional training after post-testing.

Comments

We developed a SBML curriculum with a comprehensive assessment of BBN skills and a defensible competency standard. Future efforts will expand the mastery model to larger cohorts and assess the impact of rigorous education on patient care outcomes.  相似文献   
6.
Bulletin of Experimental Biology and Medicine - Fast neutron therapy, which previously has demonstrated effective results, but along with a large number of complications, can again be considered a...  相似文献   
7.
8.
<正>Photobiomodulation (PBM)-the irradiation of cells or tissues with low-intensity red to near-infrared light-is emerging as an effective means of enhancing cell and tissue resilience and repair. As reviewed elsewhere (Gordon et al., 2019), the intracellular effects of  相似文献   
9.
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