全文获取类型
收费全文 | 2172871篇 |
免费 | 152307篇 |
国内免费 | 3201篇 |
专业分类
耳鼻咽喉 | 29736篇 |
儿科学 | 66396篇 |
妇产科学 | 58942篇 |
基础医学 | 315056篇 |
口腔科学 | 63394篇 |
临床医学 | 195597篇 |
内科学 | 420362篇 |
皮肤病学 | 46459篇 |
神经病学 | 169440篇 |
特种医学 | 85689篇 |
外国民族医学 | 429篇 |
外科学 | 326662篇 |
综合类 | 41979篇 |
现状与发展 | 3篇 |
一般理论 | 777篇 |
预防医学 | 167909篇 |
眼科学 | 49520篇 |
药学 | 162944篇 |
11篇 | |
中国医学 | 4020篇 |
肿瘤学 | 123054篇 |
出版年
2018年 | 23550篇 |
2017年 | 19271篇 |
2016年 | 20156篇 |
2015年 | 24261篇 |
2014年 | 31215篇 |
2013年 | 44389篇 |
2012年 | 65040篇 |
2011年 | 63768篇 |
2010年 | 36844篇 |
2009年 | 36920篇 |
2008年 | 59091篇 |
2007年 | 63136篇 |
2006年 | 63847篇 |
2005年 | 69260篇 |
2004年 | 68476篇 |
2003年 | 62189篇 |
2002年 | 56513篇 |
2001年 | 102563篇 |
2000年 | 103681篇 |
1999年 | 89821篇 |
1998年 | 22736篇 |
1997年 | 20179篇 |
1996年 | 20654篇 |
1995年 | 19354篇 |
1994年 | 18024篇 |
1993年 | 16733篇 |
1992年 | 71562篇 |
1991年 | 69978篇 |
1990年 | 68091篇 |
1989年 | 66166篇 |
1988年 | 61102篇 |
1987年 | 59604篇 |
1986年 | 56313篇 |
1985年 | 53100篇 |
1984年 | 39189篇 |
1983年 | 33660篇 |
1982年 | 18565篇 |
1979年 | 36775篇 |
1978年 | 25844篇 |
1977年 | 21643篇 |
1976年 | 19526篇 |
1975年 | 21942篇 |
1974年 | 26839篇 |
1973年 | 25733篇 |
1972年 | 24551篇 |
1971年 | 23211篇 |
1970年 | 21940篇 |
1969年 | 20828篇 |
1968年 | 19230篇 |
1967年 | 17443篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
62.
63.
64.
Susan E. Hickman Alexia M. Torke Greg A. Sachs Rebecca L. Sudore Anne L. Myers Qing Tang Giorgos Bakoyannis Bernard J. Hammes 《Journal of pain and symptom management》2019,57(6):1143-1150.e5
ContextIt is especially important that patients are well informed when making high-stakes, preference-sensitive decisions like those on the Physician Orders for Life-Sustaining Treatment (POLST) form. However, there is currently no way to easily evaluate whether patients understand key concepts when making these important decisions.ObjectivesTo develop a POLST knowledge survey.MethodsExpert (n = 62) ratings of key POLST facts were used to select items for a POLST knowledge survey. The survey was administered to nursing facility residents (n = 97) and surrogate decision-makers (n = 112). A subset (n = 135) were re-administered the survey after a standardized advance care planning discussion to assess the scale's responsiveness to change.ResultsThe 19-item survey demonstrated adequate reliability (α = 0.72.). Residents' scores (x = 11.4, standard deviation 3.3) were significantly lower than surrogate scores (x = 14.7, standard deviation 2.5) (P < 0.001). Scores for both groups increased significantly after administration of a standardized advance care planning discussion (P < 0.001). Although being a surrogate, age, race, education, cognitive functioning, and health literacy were significantly associated with higher POLST Knowledge Survey scores in univariate analyses, only being a surrogate (P < 0.001) and being white (P = 0.028) remained significantly associated with higher scores in multivariate analyses.ConclusionThe 19-item POLST Knowledge Survey demonstrated adequate reliability and responsiveness to change. Findings suggest the survey could be used to identify knowledge deficits and provide targeted education to ensure adequate understanding of key clinical decisions when completing POLST. 相似文献
65.
Amosova E. N. Shilova I. V. Zueva E. P. Rybalkina O. Yu. 《Pharmaceutical Chemistry Journal》2020,54(7):721-724
Pharmaceutical Chemistry Journal - Three extracts were produced from the above-ground part of the meadowsweet Filipendula ulmaria (L.) Maxim. using water, 40% ethanol, and 70% ethanol. Comparative... 相似文献
66.
67.
Dermoscopic difficult lesions: an objective evaluation of reflectance confocal microscopy impact for accurate diagnosis
下载免费PDF全文
![点击此处可从《Journal of the European Academy of Dermatology and Venereology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
68.
Caroline E. Sloan Judy Zhong Dinushika Mohottige Rasheeda Hall Clarissa J. Diamantidis Leight E. Boulware Virginia Wang 《Seminars in dialysis》2020,33(6):440-448
Caring for patients with end-stage kidney disease (ESKD) in the United States is challenging, due in part to the complex epidemiology of the disease's progression as well as the ways in which care is delivered. As CKD progresses toward ESKD, the number of comorbidities increases and care involves multiple healthcare providers from multiple subspecialties. This occurs in the context of a fragmented US healthcare delivery system that is traditionally siloed by provider specialty, organization, as well as systems of payment and administration. This article describes the role of care fragmentation in the delivery of optimal ESKD care and identifies research gaps in the evidence across the continuum of care. We then consider the impact of care fragmentation on ESKD care from the patient and health system perspectives and explore opportunities for system-level interventions aimed at improving care for patients with ESKD. 相似文献
69.
70.
As millions of people turn to social media for health information, better understanding the factors that guide health-related judgments and perceptions in this context is imperative. We report on two Web experiments (n > 400 total) examining the power of society’s widespread weight bias and related stereotypes to influence nutrition judgments in social media spaces. In Experiment 1, meals were judged as lower in nutritional quality when the person who recommended them (the source) was depicted as obese rather than of normal weight, an effect mediated by stereotypic beliefs about the source as a generally unhealthy person. Experiment 2 replicated this effect, which—notably—remained significant when controlling for objective nutritional information (calories and fat content). Results highlight spillover effects of weight bias that extend beyond person perception to color impressions of objects (here, food) that are associated with stigmatized attributes. Implications for everyday nutrition judgments and public health are considered. 相似文献