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   12255篇
  免费   1146篇
  国内免费   20篇
耳鼻咽喉   173篇
儿科学   302篇
妇产科学   219篇
基础医学   1588篇
口腔科学   211篇
临床医学   1398篇
内科学   2311篇
皮肤病学   221篇
神经病学   1375篇
特种医学   334篇
外科学   1492篇
综合类   215篇
一般理论   11篇
预防医学   1400篇
眼科学   225篇
药学   991篇
中国医学   11篇
肿瘤学   944篇
  2023年   160篇
  2022年   153篇
  2021年   475篇
  2020年   267篇
  2019年   409篇
  2018年   428篇
  2017年   290篇
  2016年   356篇
  2015年   389篇
  2014年   467篇
  2013年   616篇
  2012年   903篇
  2011年   891篇
  2010年   456篇
  2009年   423篇
  2008年   670篇
  2007年   623篇
  2006年   618篇
  2005年   529篇
  2004年   484篇
  2003年   426篇
  2002年   378篇
  2001年   187篇
  2000年   194篇
  1999年   169篇
  1998年   85篇
  1997年   72篇
  1996年   65篇
  1995年   64篇
  1994年   56篇
  1993年   68篇
  1992年   176篇
  1991年   160篇
  1990年   129篇
  1989年   142篇
  1988年   122篇
  1987年   109篇
  1986年   92篇
  1985年   100篇
  1984年   58篇
  1983年   52篇
  1978年   47篇
  1976年   44篇
  1975年   58篇
  1974年   58篇
  1973年   55篇
  1972年   70篇
  1971年   52篇
  1970年   51篇
  1969年   44篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
Background: Traumatic brain injury (TBI) results in verbal recall deficits and impaired processing of emotion encoded in facial appearance, prosody and the linguistic content of messages. Emotion facilitates memory (emotional memory advantage) for non-brain injured (NBI) individuals but the impact of emotion on verbal recall for linguistically encoded stimuli in TBI has not been explored.

Aims: The purpose of this study was to determine the effects of stimulus emotional content on verbal recall of words and paragraphs in TBI compared to NBI individuals.

Methods and procedures: Six 10-item lists, each with five emotional and five neutral words, and six paragraphs (three emotional, three neutral) were counterbalanced and presented in random order to 20 individuals with TBI and 44 NBI. The number of words from lists and the number of content units from paragraphs were compared for the two groups.

Outcomes and results: The NBI participants recalled more words from the lists and content units from the paragraphs than the individuals with TBI. Both groups recalled significantly more emotional than neutral words. NBI but not TBI participants had significantly greater recall for information in paragraphs with emotional content.

Conclusions: Participants with TBI showed impaired recall of words and paragraph content. Emotion facilitated word and paragraph content recall for neurotypical individuals but emotional memory advantage was limited to words for the TBI participants.  相似文献   

3.
4.
5.

Background

Physicians treating nonvalvular atrial fibrillation (AF) assess stroke and bleeding risks when deciding on anticoagulation. The agreement between empirical and physician-estimated risks is unclear. Furthermore, the association between patient and physician sex and anticoagulation decision-making is uncertain.

Methods

We pooled data from 2 national primary care physician chart audit databases of patients with AF (Facilitating Review and Education to Optimize Stroke Prevention in Atrial Fibrillation and Coordinated National Network to Engage Physicians in the Care and Treatment of Patients with Atrial Fibrillation Chart Audit) with a combined 1035 physicians (133 female, 902 male) and 10,927 patients (4567 female and 6360 male).

Results

Male physicians underestimated stroke risk in female patients and overestimated risk in male patients. Female physicians estimated stroke risk well in female patients but underestimated the risk in male patients. Risk of bleeding was underestimated in all. Despite differences in risk assessment by physician and patient sex, > 90% of patients received anticoagulation across all subgroups. There was modest agreement between physician estimated and calculated (ie, CHADS2 score) stroke risk: Kappa scores were 0.41 (0.35-0.47) for female physicians and 0.34 (0.32-0.36) for male physicians.

Conclusions

Our study is the first to examine the association between patient and physician sex influences and stroke and bleeding risk estimation in AF. Although there were differences in agreement between physician estimated stroke risk and calculated CHADS2 scores, these differences were small and unlikely to affect clinical practice; further, despite any perceived differences in the accuracy of risk assessment by sex, most patients received anticoagulation.  相似文献   
6.
Rates of smoking during pregnancy remain high in Canada, and cessation rates are low among women who are younger than 24 years and who are socially disadvantaged, that is, have few social and economic resources because of poverty, violence, or mental health issues. On the basis of findings from literature reviews and consultation with policy makers, we developed and operationalized four approaches that can be used by health care providers to tailor interventions for tobacco use in pregnancy. These four approaches are woman centered, trauma informed, harm reducing, and equitable. Public health initiatives that address smoking in young and socially disadvantaged women could be more sharply focused by shifting to such tailored approaches that are grounded in social justice aims, span pre- and postpregnancy periods, and can be used to address women’s social contexts and concerns.  相似文献   
7.
8.
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