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   249570篇
  免费   12546篇
  国内免费   543篇
耳鼻咽喉   3224篇
儿科学   7652篇
妇产科学   5106篇
基础医学   35955篇
口腔科学   5520篇
临床医学   19899篇
内科学   55666篇
皮肤病学   6427篇
神经病学   22229篇
特种医学   7791篇
外国民族医学   108篇
外科学   31974篇
综合类   1033篇
一般理论   66篇
预防医学   22158篇
眼科学   4715篇
药学   17294篇
中国医学   724篇
肿瘤学   15118篇
  2023年   1304篇
  2022年   991篇
  2021年   3887篇
  2020年   2318篇
  2019年   4293篇
  2018年   7836篇
  2017年   5149篇
  2016年   5217篇
  2015年   5887篇
  2014年   6321篇
  2013年   9963篇
  2012年   17134篇
  2011年   17132篇
  2010年   8706篇
  2009年   6698篇
  2008年   14769篇
  2007年   15726篇
  2006年   14574篇
  2005年   14496篇
  2004年   13557篇
  2003年   12445篇
  2002年   11749篇
  2001年   6283篇
  2000年   6333篇
  1999年   5700篇
  1998年   1136篇
  1997年   951篇
  1996年   874篇
  1995年   786篇
  1992年   3286篇
  1991年   2934篇
  1990年   2805篇
  1989年   2541篇
  1988年   2414篇
  1987年   2232篇
  1986年   2131篇
  1985年   1919篇
  1984年   1429篇
  1983年   1228篇
  1979年   1221篇
  1978年   861篇
  1977年   810篇
  1975年   818篇
  1974年   994篇
  1973年   1004篇
  1972年   947篇
  1971年   928篇
  1970年   868篇
  1969年   915篇
  1968年   794篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
103.
104.
105.
106.

Objective

To explore from a gender perspective the association with subjective health of the interaction between education and household arrangements within the framework of social determinants of health placed at the micro and mezzo levels.

Methods

The data comes from the Spanish sample of the European Union Statistics on Income and Living Conditions for 2014. Independent logistic regression models for men and women were run to analyze the association with subjective health of the interaction between education and household arrangements. An additive model was run to assess possible advantages over the interaction approach.

Results

The interaction models show a lower or even no significant effect on health of household arrangements usually negatively associated with health among individuals with high education, displaying specific patterns according to sex.

Conclusions

Health profiles of women and men are more precisely drawn if both social determinants of health are combined. Among the women, the important role was confirmed of both social determinants of health in understanding their health inequalities. Among the men, mainly those with low educational achievement, the interaction revealed that the household was a more meaningful social determinant of health. This could enable the definition of more efficient public policies to reduce health and gender inequalities.  相似文献   
107.
108.
109.
Conservation Genetics Resources - Fifteen polymorphic microsatellite markers were developed for Tridacna maxima in order to assess self-recruitment and larval dispersal within and among MPAs in New...  相似文献   
110.

Background and aims

Since accelerated atherosclerosis has been reported in systemic lupus erythematosus (SLE), predictive biomarkers of cardiovascular disease (CVD) are needed. Among non-traditional risk factors, bone mineral density (BMD) has been related to CVD. However, its role in SLE remains controversial. This study aims to analyze the associations of subclinical atherosclerosis with traditional and non-traditional CV risk factors.

Methods and results

In a cross-sectional study, atherosclerosis burden was compared between 112 female SLE patients and 31 controls. Plaque number and carotid intima-media wall thickness (cIMT) were assessed by ultrasonography. In a retrospective study, BMD determinations obtained 5-years before the ultrasonography assessment were analyzed in a subgroup of 62 patients. Plaque frequency was increased in SLE, even in patients without CV events or carotid wall thickening. cIMT was increased in patients with CVD, positively correlated with body mass index (BMI). Interestingly, a paradoxical effect of BMI on carotid parameters was observed. Whereas underweight patients (BMI < 20) showed increased prevalence of carotid plaques with low cIMT, those with BMI > 30 showed higher cIMT and plaque burden. Overweight patients (25 < BMI<30) exhibited both elevated cIMT and plaque number. BMI was an independent predictor of BMD. In our retrospective study, patients with either clinical or subclinical CVD exhibited lower BMD levels than their CV-free counterparts. A low lumbar spine BMD independently predicted CVD development after adjusting for confounders.

Conclusion

SLE was associated with a higher subclinical atherosclerosis burden, a bimodal effect being observed for BMI. Decreased BMD can be a CV risk biomarker in SLE.  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