全文获取类型
收费全文 | 156894篇 |
免费 | 32870篇 |
国内免费 | 2427篇 |
专业分类
耳鼻咽喉 | 5184篇 |
儿科学 | 5502篇 |
妇产科学 | 2535篇 |
基础医学 | 4157篇 |
口腔科学 | 1901篇 |
临床医学 | 27255篇 |
内科学 | 49237篇 |
皮肤病学 | 7629篇 |
神经病学 | 15560篇 |
特种医学 | 6579篇 |
外科学 | 41769篇 |
综合类 | 253篇 |
现状与发展 | 72篇 |
一般理论 | 2篇 |
预防医学 | 7338篇 |
眼科学 | 3440篇 |
药学 | 1397篇 |
中国医学 | 33篇 |
肿瘤学 | 12348篇 |
出版年
2024年 | 518篇 |
2023年 | 4821篇 |
2022年 | 1273篇 |
2021年 | 3297篇 |
2020年 | 6140篇 |
2019年 | 2338篇 |
2018年 | 7585篇 |
2017年 | 7494篇 |
2016年 | 8567篇 |
2015年 | 8603篇 |
2014年 | 15772篇 |
2013年 | 15958篇 |
2012年 | 6078篇 |
2011年 | 6096篇 |
2010年 | 10646篇 |
2009年 | 14501篇 |
2008年 | 6290篇 |
2007年 | 4546篇 |
2006年 | 6941篇 |
2005年 | 4276篇 |
2004年 | 3460篇 |
2003年 | 2390篇 |
2002年 | 2459篇 |
2001年 | 3859篇 |
2000年 | 3066篇 |
1999年 | 3273篇 |
1998年 | 3730篇 |
1997年 | 3521篇 |
1996年 | 3414篇 |
1995年 | 3266篇 |
1994年 | 1987篇 |
1993年 | 1592篇 |
1992年 | 1411篇 |
1991年 | 1442篇 |
1990年 | 1093篇 |
1989年 | 1213篇 |
1988年 | 1039篇 |
1987年 | 879篇 |
1986年 | 912篇 |
1985年 | 733篇 |
1984年 | 566篇 |
1983年 | 541篇 |
1982年 | 529篇 |
1981年 | 406篇 |
1980年 | 375篇 |
1979年 | 315篇 |
1978年 | 333篇 |
1977年 | 400篇 |
1975年 | 281篇 |
1972年 | 306篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
Elizabeth A. Mosley PhD MPH Amy J. Schulz PhD MPH MSW Lisa H. Harris MD PhD Barbara A. Anderson PhD 《Women & health》2020,60(7):806-820
ABSTRACT Abortion is legal in South Africa, but negative abortion attitudes remain common and are poorly understood. We used nationally representative South African Social Attitudes Survey data to analyze abortion attitudes in the case of fetal anomaly and in the case of poverty from 2007 to 2016 (n = 20,711; ages = 16+). We measured correlations between abortion attitudes and these important predictors: religiosity, attitudes about premarital sex, attitudes about preferential hiring and promotion of women, and attitudes toward family gender roles. Abortion acceptability for poverty increased over time (b = 0.05, p < .001), but not for fetal anomaly (b = ?0.008, p = .284). Highly religious South Africans reported lower abortion acceptability in both cases (Odds Ratio (OR)anomaly = 0.85, p = .015; ORpoverty = 0.84, p = .02). Premarital sex acceptability strongly and positively predicted abortion acceptability (ORanomaly = 2.63, p < .001; ORpoverty = 2.46, p < .001). Attitudes about preferential hiring and promotion of women were not associated with abortion attitudes, but favorable attitudes about working mothers were positively associated with abortion acceptability for fetal anomaly ((ORanomaly = 1.09, p = .01; ORpoverty = 1.02, p = .641)). Results suggest negative abortion attitudes remain common in South Africa and are closely tied to religiosity, traditional ideologies about sexuality, and gender role expectations about motherhood. 相似文献
62.
63.
64.
65.
Psychological characteristics and physiological reactivity to acute stress in mothers of children with autism spectrum disorder 总被引:1,自引:0,他引:1
Elena Pattini Luca Carnevali Alfonso Troisi Guido Matrella Dolores Rollo Mauro Fornari Andrea Sgoifo 《Stress and health》2019,35(4):421-431
Stress related to parenting a child with autism spectrum disorder can differently affect caregiver's physiological reactivity to acute stress. Here, parental stress levels, psychological characteristics, and coping strategies were assessed alongside measures of heart rate, heart rate variability, and cortisol during a psychosocial stress test in mothers of children with ASD (M‐ASD, n = 15) and mothers of typically developing children (n = 15). M‐ASD reported significantly higher levels of parental stress, anxiety, negative affectivity, social inhibition, and a larger preference for avoidance strategies. M‐ASD showed larger heart rate and cortisol responses to the psychosocial stress test. A positive relationship was found between parental stress levels and the magnitude of the cortisol stress response in both groups. The present findings indicate exaggerated physiological reactivity to acute psychosocial stress in M‐ASD and prompt further research to explore the role of individual differences in mediating the effects of parental stress on physiological stress responses. 相似文献
66.
Worsening pneumonitis due to a pharmacokinetic drug–drug interaction between everolimus and voriconazole in a renal transplant patient
下载免费PDF全文
![点击此处可从《Journal of clinical pharmacy and therapeutics》网站下载免费的PDF全文](/ch/ext_images/free.gif)
67.
Is it possible to make a diagnosis of raw,heated, and baked egg allergy in children using cutoffs? A systematic review
下载免费PDF全文
![点击此处可从《Pediatric allergy and immunology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
68.
69.