全文获取类型
收费全文 | 1361篇 |
免费 | 190篇 |
国内免费 | 18篇 |
专业分类
耳鼻咽喉 | 20篇 |
儿科学 | 53篇 |
妇产科学 | 19篇 |
基础医学 | 87篇 |
口腔科学 | 38篇 |
临床医学 | 275篇 |
内科学 | 291篇 |
皮肤病学 | 105篇 |
神经病学 | 52篇 |
特种医学 | 133篇 |
外科学 | 193篇 |
综合类 | 94篇 |
现状与发展 | 30篇 |
预防医学 | 59篇 |
眼科学 | 15篇 |
药学 | 32篇 |
中国医学 | 3篇 |
肿瘤学 | 70篇 |
出版年
2024年 | 14篇 |
2023年 | 180篇 |
2022年 | 11篇 |
2021年 | 16篇 |
2020年 | 57篇 |
2019年 | 26篇 |
2018年 | 51篇 |
2017年 | 48篇 |
2016年 | 41篇 |
2015年 | 55篇 |
2014年 | 85篇 |
2013年 | 63篇 |
2012年 | 29篇 |
2011年 | 36篇 |
2010年 | 76篇 |
2009年 | 93篇 |
2008年 | 34篇 |
2007年 | 58篇 |
2006年 | 28篇 |
2005年 | 22篇 |
2004年 | 17篇 |
2003年 | 23篇 |
2002年 | 19篇 |
2001年 | 22篇 |
2000年 | 16篇 |
1999年 | 29篇 |
1998年 | 39篇 |
1997年 | 53篇 |
1996年 | 41篇 |
1995年 | 36篇 |
1994年 | 29篇 |
1993年 | 34篇 |
1992年 | 10篇 |
1991年 | 9篇 |
1990年 | 11篇 |
1989年 | 24篇 |
1988年 | 21篇 |
1987年 | 17篇 |
1986年 | 4篇 |
1985年 | 14篇 |
1984年 | 5篇 |
1983年 | 3篇 |
1982年 | 8篇 |
1981年 | 10篇 |
1980年 | 13篇 |
1978年 | 5篇 |
1977年 | 3篇 |
1976年 | 13篇 |
1975年 | 10篇 |
1974年 | 3篇 |
排序方式: 共有1569条查询结果,搜索用时 31 毫秒
1.
A mixed‐method study of effects of a therapeutic play intervention for children on parental anxiety and parents' perceptions of the intervention 下载免费PDF全文
2.
Hysterosalpingography was performed in 31 patients by means of a low-dose scanning-beam digital radiographic system. The technique permits adequate evaluation of gynecologic abnormalities while allowing significant reduction in radiation: 2.4-mR (6.1 X 10(-7) C/kg) exposure to the skin and 0.7-mrad (7 X 10(-6) Gy) mean dose to the ovaries per image obtained. Sixteen patients demonstrated readily recognizable and documented abnormalities, corroborated by laparoscopy, laparotomy, or other supportive evidence. 相似文献
3.
4.
The Relationship Between Daily Life Stress and Gastrointestinal Symptoms in Women with Irritable Bowel Syndrome 总被引:3,自引:0,他引:3
Rona L. Levy Kevin C. Cain Monica Jarrett Margaret M. Heitkemper 《Journal of behavioral medicine》1997,20(2):177-193
Research on irritable bowel syndrome (IBS), a functional disorder of the gastrointestinal (GI) system, has linked GI symptoms to stress. This study examined the relationship between daily stress and GI symptoms across women and within woman in IBS patients (n = 26), IBS nonpatients (IBS-NP; n = 23), and controls (n = 26), controlling for menstrual cycle phase. Women (ages 20–45) completed daily health diaries for two cycles in which they monitored daily GI symptoms and stress levels. The Life Event Survey (LES) was used as a retrospective measure of self-reported stress. The across-women analyses showed higher mean GI symptoms and stress in the IBS and IBS-NP groups relative to controls but no group differences in LES scores. The within-woman analyses found a significant and positive relationship between daily stress and daily symptoms in both the IBS-NP and the IBS groups. Controlling for menstrual cycle had no substantial impact on the results. 相似文献
5.
6.
7.
8.
Solitary bronchioloalveolar carcinoma: CT criteria 总被引:14,自引:0,他引:14
Kuhlman JE; Fishman EK; Kuhajda FP; Meziane MM; Khouri NF; Zerhouni EA; Siegelman SS 《Radiology》1988,167(2):379-382
The computed tomographic (CT) scans of 30 patients with solitary bronchioloalveolar carcinoma were reviewed. Common features at CT included the peripheral or subpleural location of a pulmonary mass (25 cases), pseudocavitation (18 cases), heterogeneous attenuation (17 cases), irregular margins forming a star pattern (22 cases), and pleural tags (21 cases). Using these CT criteria, four independent observers attempted to identify cases of bronchioloalveolar carcinoma from a larger sample of lung cancers and benign lesions by categorizing a series of test cases into four probability categories. Although the bronchioloalveolar carcinomas were correctly ranked in the two highest probability categories 75% of the time (in 45 of 60 cases), there was considerable overlap with other lung lesions, particularly with adenocarcinoma and large cell undifferentiated carcinoma. However, even though the typical features of bronchioloalveolar carcinoma are not invariable or highly specific, they are characteristic enough to suggest the diagnosis. 相似文献
9.
10.
Roderik Metz Gino MMJ Kerkhoffs Egbert-Jan MM Verleisdonk Geert J van der Heijden 《BMC musculoskeletal disorders》2007,8(1):108