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   1681168篇
  免费   118257篇
  国内免费   2008篇
耳鼻咽喉   21877篇
儿科学   54981篇
妇产科学   45119篇
基础医学   260229篇
口腔科学   45029篇
临床医学   155442篇
内科学   321650篇
皮肤病学   36849篇
神经病学   129245篇
特种医学   62801篇
外国民族医学   316篇
外科学   241630篇
综合类   32245篇
现状与发展   4篇
一般理论   661篇
预防医学   135901篇
眼科学   37776篇
药学   125221篇
  7篇
中国医学   2961篇
肿瘤学   91489篇
  2018年   17851篇
  2017年   13500篇
  2016年   14995篇
  2015年   17204篇
  2014年   23522篇
  2013年   35773篇
  2012年   49752篇
  2011年   53579篇
  2010年   30989篇
  2009年   29267篇
  2008年   50003篇
  2007年   54062篇
  2006年   53336篇
  2005年   51836篇
  2004年   50109篇
  2003年   48097篇
  2002年   46676篇
  2001年   72867篇
  2000年   74392篇
  1999年   62506篇
  1998年   17552篇
  1997年   15617篇
  1996年   16065篇
  1995年   15165篇
  1994年   13961篇
  1992年   49274篇
  1991年   49886篇
  1990年   48784篇
  1989年   47414篇
  1988年   43853篇
  1987年   43278篇
  1986年   40949篇
  1985年   38864篇
  1984年   29446篇
  1983年   25623篇
  1982年   14722篇
  1981年   13395篇
  1979年   28179篇
  1978年   20518篇
  1977年   16993篇
  1976年   16415篇
  1975年   18292篇
  1974年   21734篇
  1973年   21348篇
  1972年   19999篇
  1971年   18823篇
  1970年   17739篇
  1969年   16588篇
  1968年   15585篇
  1967年   13918篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
121.
122.
123.
124.
125.
126.
This study explored the relationship between active mediation, exposure to Daniel Tiger’s Neighborhood, and key indicators of preschoolers’ social and emotional development. One hundred and twenty-seven children aged 2–6 either watched or did not watch 10 episodes of Daniel Tiger’s Neighborhood over a two-week period. Results revealed that preschoolers who watched the program exhibited higher levels of empathy, self-efficacy, and emotion recognition when their regular TV-watching experiences are frequently accompanied by active mediation. This was especially true for younger preschoolers and preschoolers from low-income families. Implications for policy-makers, parents, producers of prosocial programming, and educators are discussed.  相似文献   
127.
On 8 April 2014, a US jury ordered Takeda and Eli Lilly to pay $9 bn in punitive damages after finding that they had concealed the cancer risks associated with pioglitazone. By contrast, on 28 August 2014, the long‐awaited outcome of the 10‐year Kaiser Permanente Northern California study was announced. That study was specifically designed to investigate whether patients exposed to pioglitazone were at an increased risk of bladder cancer and found no association; thus, at last, the controversial issue has been resolved. A review, in retrospect, of the story of the proposed link between pioglitazone and bladder cancer reveals flaws at every stage. In 2012, a BMJ editorial, in keeping with some other contemporary reports, stated ‘it can confidently be assumed that pioglitazone increases the risk of bladder cancer’. Examination of the information which led to such a statement shows that: 1) the pre‐clinical findings of bladder cancer in male rats is not indicative of human risk; 2) there is no association between bladder cancer and pioglitazone in randomized controlled trials, once cases that could not plausibly be related to treatment are removed; and 3) the observational studies that have suggested a link have over‐extrapolated from the data: pioglitazone‐treated patients had more risk factors for bladder cancer than those not treated with pioglitazone. Meanwhile careful study of randomized controlled trials shows evidence of cardiovascular benefit from pioglitazone in Type 2 diabetes, a condition which results, more than anything, in premature cardiovascular death and morbidity.  相似文献   
128.
129.
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   
130.
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