全文获取类型
收费全文 | 3162593篇 |
免费 | 227590篇 |
国内免费 | 4913篇 |
专业分类
耳鼻咽喉 | 44875篇 |
儿科学 | 103909篇 |
妇产科学 | 88099篇 |
基础医学 | 463369篇 |
口腔科学 | 88254篇 |
临床医学 | 282119篇 |
内科学 | 607654篇 |
皮肤病学 | 69127篇 |
神经病学 | 249521篇 |
特种医学 | 120013篇 |
外国民族医学 | 827篇 |
外科学 | 478908篇 |
综合类 | 66860篇 |
现状与发展 | 12篇 |
一般理论 | 1077篇 |
预防医学 | 245277篇 |
眼科学 | 74434篇 |
药学 | 237165篇 |
12篇 | |
中国医学 | 6173篇 |
肿瘤学 | 167411篇 |
出版年
2018年 | 34135篇 |
2017年 | 25641篇 |
2016年 | 28825篇 |
2015年 | 32694篇 |
2014年 | 45877篇 |
2013年 | 69315篇 |
2012年 | 95530篇 |
2011年 | 101795篇 |
2010年 | 60509篇 |
2009年 | 57054篇 |
2008年 | 96351篇 |
2007年 | 102924篇 |
2006年 | 104093篇 |
2005年 | 101276篇 |
2004年 | 97145篇 |
2003年 | 93690篇 |
2002年 | 91171篇 |
2001年 | 140704篇 |
2000年 | 144316篇 |
1999年 | 121741篇 |
1998年 | 35884篇 |
1997年 | 31579篇 |
1996年 | 31949篇 |
1995年 | 30070篇 |
1994年 | 27893篇 |
1993年 | 26220篇 |
1992年 | 95953篇 |
1991年 | 93852篇 |
1990年 | 92002篇 |
1989年 | 89021篇 |
1988年 | 82254篇 |
1987年 | 80740篇 |
1986年 | 76370篇 |
1985年 | 73206篇 |
1984年 | 54685篇 |
1983年 | 46818篇 |
1982年 | 28151篇 |
1981年 | 25192篇 |
1979年 | 51158篇 |
1978年 | 36366篇 |
1977年 | 30746篇 |
1976年 | 29286篇 |
1975年 | 31903篇 |
1974年 | 37907篇 |
1973年 | 36340篇 |
1972年 | 34325篇 |
1971年 | 32358篇 |
1970年 | 29956篇 |
1969年 | 28647篇 |
1968年 | 26637篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
91.
In 1963, Goffman argued that forming a group based on shared stigma may provide benefits. However, there is no empirical research on whether perception that a separate, unique, coherent group exists (i.e., group entitativity) influences coping, such as educating others or secrecy, for the stigmatized individual or his or her spouse. Further, little is known about how spouses influence each other in terms of promoting the education of others about a stigmatizing condition, especially when it comes to the role of believing that stigma-based groups, to which they may both belong, exist. This study provides a step toward bridging this gap in the research by applying the label management model in efforts to understand coping for couples in which one spouse is diagnosed with genetic mutations leading to alpha-1 antitrypsin deficiency (AATD). This study included 50 married couples in which one spouse is diagnosed with genetic mutations leading to alpha-1 antitrypsin deficiency (AATD). We found that group entitativity related to those with AATD counterbalanced the influence of genetic stigma on spouses’ intentions to keep the diagnosis secret or to educate others about it. Intrapersonal and interpersonal influences appeared among spouses. Attention is needed on the power of creating groups for stigmatized persons and their relatives. Indeed, people live within a dynamic world of group entities, and multiple social identities including spousal and familial. While attention has been paid to the diffusion of stigmas to loved ones, less has been paid to the uplift of group entities for them. 相似文献
92.
93.
94.
95.
96.
Marcel Toussaint Raymond J. Gilles Noura Azzabou Benjamin Marty Alexandre Vignaud Andreas Greiser Pierre G. Carlier 《Medicine》2015,94(43)
Delayed contrast enhancement after injection of a gadolinium-chelate (Gd-chelate) is a reference imaging method to detect myocardial tissue changes. Its localization within the thickness of the myocardial wall allows differentiating various pathological processes such as myocardial infarction (MI), inflammatory myocarditis, and cardiomyopathies. The aim of the study was first to characterize benign myocarditis using quantitative delayed-enhancement imaging and then to investigate whether the measure of the extracellular volume fraction (ECV) can be used to discriminate between MI and myocarditis.In 6 patients with acute benign myocarditis (32.2 ± 13.8 year-old, subepicardial late gadolinium enhancement [LGE]) and 18 patients with MI (52.3 ± 10.9 year-old, subendocardial/transmural LGE), myocardial T1 was determined using the Modified Look-Locker Imaging (MOLLI) sequence at 3 Tesla before and after Gd-chelate injection. T1 values were compared in LGE and normal regions of the myocardium. The myocardial T1 values were normalized to the T1 of blood, and the ECV was calculated from T1 values of myocardium and blood pre- and post-Gd injection.In both myocarditis and MI, the T1 was lower in LGE regions than in normal regions of the left ventricle. T1 of LGE areas was significantly higher in myocarditis than in MI (446.8 ± 45.8 vs 360.5 ± 66.9 ms, P = 0.003) and ECV was lower in myocarditis than in MI (34.5 ± 3.3 vs 53.8 ± 13.0 %, P = 0.004).Both inflammatory process and chronic fibrosis induce LGE (subepicardial in myocarditis and subendocardial in MI). The present study demonstrates that the determination of T1 and ECV is able to differentiate the 2 histological patterns.Further investigation will indicate whether the severity of ECV changes might help refine the predictive risk of LGE in myocarditis. 相似文献
97.
98.
99.
100.