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   1278656篇
  免费   100172篇
  国内免费   2001篇
耳鼻咽喉   18426篇
儿科学   44429篇
妇产科学   35143篇
基础医学   182484篇
口腔科学   33623篇
临床医学   111461篇
内科学   258564篇
皮肤病学   28028篇
神经病学   100596篇
特种医学   51287篇
外国民族医学   660篇
外科学   196690篇
综合类   27099篇
现状与发展   1篇
一般理论   377篇
预防医学   95933篇
眼科学   27929篇
药学   94917篇
  2篇
中国医学   2440篇
肿瘤学   70740篇
  2018年   13204篇
  2017年   10023篇
  2016年   10972篇
  2015年   12462篇
  2014年   17269篇
  2013年   26343篇
  2012年   36195篇
  2011年   38237篇
  2010年   22901篇
  2009年   21915篇
  2008年   36780篇
  2007年   39382篇
  2006年   39645篇
  2005年   38594篇
  2004年   37714篇
  2003年   36563篇
  2002年   35898篇
  2001年   64031篇
  2000年   66540篇
  1999年   56454篇
  1998年   15150篇
  1997年   13770篇
  1996年   14219篇
  1995年   13470篇
  1994年   12774篇
  1993年   11814篇
  1992年   44592篇
  1991年   43498篇
  1990年   42250篇
  1989年   40144篇
  1988年   36917篇
  1987年   36262篇
  1986年   33646篇
  1985年   32312篇
  1984年   24168篇
  1983年   20285篇
  1982年   11734篇
  1981年   10703篇
  1980年   9532篇
  1979年   21361篇
  1978年   14844篇
  1977年   12544篇
  1976年   11702篇
  1975年   12636篇
  1974年   14677篇
  1973年   14122篇
  1972年   12954篇
  1971年   11742篇
  1970年   11060篇
  1969年   10034篇
排序方式: 共有10000条查询结果,搜索用时 171 毫秒
91.
Obtaining accurate assessment data from adolescents in treatment aids clinical decision making and facilitates more accurate outcome evaluations. However, findings could be biased due to underreported substance use and mental health symptoms. This article compares self-reports of youth in non-White matched client–assessor dyads and those in nonmatched dyads. There were no differences on self-reported substance use, but matched youth reported significantly fewer attention deficit/hyperactivity disorder symptoms versus the comparison group. One possible reason for these findings is the effect of in-group stereotype threat. Future studies should examine the potential effect that in-group stereotyping and perceived racism have on the therapeutic relationship.  相似文献   
92.
93.
94.
95.
96.
97.
98.
99.
IntroductionInterprofessional learning (IPL) is a vital aspect of training in radiation oncology professions, yet is rarely delivered to those professionals who work most closely together in clinical practice. Scenario-based learning using simulation facilities provides a unique opportunity to facilitate this learning and this project aimed to determine the impact and value of this initiative.MethodsSmall groups comprising post-graduate diploma pre-registration therapeutic radiographers, medical physics trainees and radiation oncology registrars were challenged with 4 plausible and challenging radiotherapy scenarios within an academic simulation centre. Pre- and post-event completion of the “Readiness for Interprofessional Learning Scale” measured impact and a Likert-style survey gathered feedback from participants.ResultsThe session increased participants' teamwork and collaboration skills as well as strengthening professional identities. Participants reported high levels of enjoyment related to collaborative working, communication and observing other professionals deploying their technical skills and specialist knowledge.ConclusionAlthough beneficial, simulated scenarios offering equal opportunities for engagement across the professions are challenging to plan and timetabling issues between the 3 groups present significant difficulties. The safe environment and unique opportunity for these groups to learn together was particularly well received and future oncology-specific simulated scenario sessions are planned with larger cohorts.Implications for practiceSimulated scenario training can be used to improve team working across the radiotherapy interprofessional team and may have wider use in other specialist interdisciplinary team development.  相似文献   
100.

Background

Early dumping is a poorly defined and incompletely understood complication after Roux-en-Y gastric (RYGB).

Objective

We performed a mixed-meal tolerance test in patients after RYGB to address the prevalence of early dumping and to gain further insight into its pathophysiology.

Setting

The study was conducted in a regional hospital in the northern part of the Netherlands.

Methods

From a random sample of patients who underwent primary RYGB between 2008 and 2011, 46 patients completed the mixed-meal tolerance test. The dumping severity score for early dumping was assessed every 30 minutes. A sum score at 30 or 60 minutes of ≥5 and an incremental score of ≥3 points were defined as indicating a high suspicion of early dumping. Blood samples were collected at baseline, every 10 minutes during the first half hour, and at 60 minutes after the start.

Results

The prevalence of a high suspicion of early dumping was 26%. No differences were seen for absolute hematocrit value, inactive glucagon-like peptide-1, and vasoactive intestinal peptide between patients with or without early dumping. Patients at high suspicion of early dumping had higher levels of active glucagon-like peptide-1 and peptide YY.

Conclusion

The prevalence of complaints at high suspicion of early dumping in a random population of patients after RYGB is 26% in response to a mixed-meal tolerance test. Postprandial increases in both glucagon-like peptide-1 and peptide YY are associated with symptoms of early dumping, suggesting gut L-cell overactivity in this syndrome.  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