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   1461406篇
  免费   101102篇
  国内免费   3187篇
耳鼻咽喉   21983篇
儿科学   44921篇
妇产科学   41768篇
基础医学   205004篇
口腔科学   43734篇
临床医学   122173篇
内科学   284962篇
皮肤病学   33929篇
神经病学   118338篇
特种医学   60197篇
外国民族医学   455篇
外科学   228897篇
综合类   31965篇
现状与发展   6篇
一般理论   466篇
预防医学   98198篇
眼科学   35126篇
药学   108875篇
  4篇
中国医学   3287篇
肿瘤学   81407篇
  2018年   14134篇
  2016年   13270篇
  2015年   14891篇
  2014年   19851篇
  2013年   29730篇
  2012年   39957篇
  2011年   41333篇
  2010年   24489篇
  2009年   23212篇
  2008年   39958篇
  2007年   43686篇
  2006年   44193篇
  2005年   43285篇
  2004年   41950篇
  2003年   40856篇
  2002年   40239篇
  2001年   67605篇
  2000年   69174篇
  1999年   58808篇
  1998年   15789篇
  1997年   14336篇
  1996年   13635篇
  1995年   12779篇
  1994年   11984篇
  1992年   44196篇
  1991年   42592篇
  1990年   41875篇
  1989年   40748篇
  1988年   38008篇
  1987年   37473篇
  1986年   35834篇
  1985年   33994篇
  1984年   25541篇
  1983年   21614篇
  1982年   13082篇
  1981年   11953篇
  1979年   24700篇
  1978年   17643篇
  1977年   15307篇
  1976年   13818篇
  1975年   15839篇
  1974年   18705篇
  1973年   18129篇
  1972年   17419篇
  1971年   16300篇
  1970年   15454篇
  1969年   14826篇
  1968年   13950篇
  1967年   12450篇
  1966年   11610篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
101.
102.
103.
104.
Donor site morbidity following radial forearm flap (RFF) harvest remains a controversial issue. The aim of this meta-analysis was to answer the question “Are the range of wrist movements (range of motion, ROM) and hand strength affected after RFF harvesting?” The PubMed, Embase, Scopus, and Cochrane Library electronic databases were systematically searched (to December 2019). Self-controlled studies evaluating hand biomechanics after RFF harvest were included. Weighted mean differences with 95% confidence intervals were calculated using the random-effects model. The outcome variables were ROM, forearm movements, grip, and pinch strengths. Thirteen studies involving a total of 335 patients were included. With the exception of grip strength and supination, which showed statistically significant reductions of about 2.40 kg and 2.86° (P < 0.05), all other ROM, forearm movements, and pinch strengths showed an insignificant difference when the operated hand was compared to the non-operated hand (P > 0.05). Regression analysis showed that the method of donor site closure and size of the donor site defect had an insignificant impact on hand biomechanics. This study confirms the lack of discernible biomechanical morbidity after RFF transfer. The minimal reduction in hand biomechanics after RFF is considered to be clinically negligible.  相似文献   
105.
106.
107.
Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz - Gefahrstoffe sind in der Arbeitswelt allgegenwärtig. Beschäftigte aus allen Branchen sind bei ihrer Arbeit mit...  相似文献   
108.
109.
Shaving and other modes of epilation can cause undue anxiety, pain, or skin irritation in children. Here, we present hair trimming as a safe, painless, and cost‐effective alternative for patients with unwanted hair which may be performed indefinitely or until the child is old enough to direct management. In select cases, removing unwanted hair using this technique may facilitate dermatologic surveillance.  相似文献   
110.

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   
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