全文获取类型
收费全文 | 1824篇 |
免费 | 223篇 |
国内免费 | 19篇 |
专业分类
耳鼻咽喉 | 21篇 |
儿科学 | 63篇 |
妇产科学 | 43篇 |
基础医学 | 136篇 |
口腔科学 | 52篇 |
临床医学 | 237篇 |
内科学 | 345篇 |
皮肤病学 | 152篇 |
神经病学 | 290篇 |
特种医学 | 136篇 |
外科学 | 206篇 |
综合类 | 100篇 |
现状与发展 | 30篇 |
预防医学 | 83篇 |
眼科学 | 31篇 |
药学 | 59篇 |
中国医学 | 3篇 |
肿瘤学 | 79篇 |
出版年
2024年 | 18篇 |
2023年 | 179篇 |
2022年 | 17篇 |
2021年 | 20篇 |
2020年 | 63篇 |
2019年 | 30篇 |
2018年 | 69篇 |
2017年 | 59篇 |
2016年 | 55篇 |
2015年 | 66篇 |
2014年 | 95篇 |
2013年 | 97篇 |
2012年 | 66篇 |
2011年 | 89篇 |
2010年 | 102篇 |
2009年 | 112篇 |
2008年 | 50篇 |
2007年 | 85篇 |
2006年 | 41篇 |
2005年 | 36篇 |
2004年 | 44篇 |
2003年 | 25篇 |
2002年 | 34篇 |
2001年 | 24篇 |
2000年 | 21篇 |
1999年 | 30篇 |
1998年 | 40篇 |
1997年 | 49篇 |
1996年 | 40篇 |
1995年 | 36篇 |
1994年 | 31篇 |
1993年 | 34篇 |
1992年 | 14篇 |
1991年 | 10篇 |
1990年 | 11篇 |
1989年 | 24篇 |
1988年 | 22篇 |
1987年 | 22篇 |
1986年 | 11篇 |
1985年 | 14篇 |
1984年 | 16篇 |
1982年 | 9篇 |
1981年 | 11篇 |
1980年 | 15篇 |
1979年 | 9篇 |
1978年 | 13篇 |
1976年 | 19篇 |
1975年 | 14篇 |
1972年 | 11篇 |
1971年 | 10篇 |
排序方式: 共有2066条查询结果,搜索用时 15 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
![点击此处可从《Journal of advanced nursing》网站下载免费的PDF全文](/ch/ext_images/free.gif)
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.
5.
6.
Kimberly M Miller Michael S Okun Hubert F Fernandez Charles E Jacobson Ramon L Rodriguez Dawn Bowers 《Movement disorders》2007,22(5):666-672
Depression is common in Parkinson's disease (PD) and affects 30 to 50% of all patients. In contrast to the wealth of research on depression in PD, little is known about the occurrence of depression in other movement disorders. The primary objective of the current study was to determine whether the high prevalence of depression symptoms seen in PD is also found in other movement disorders, by directly comparing rates of specific depression symptoms and depression severity across PD, dystonia, and essential tremor (ET). Three hundred and fifty-four patients with PD, 83 patients with dystonia, and 53 patients with ET completed the Beck Depression Inventory (BDI). We found no significant between-groups differences for depression severity, frequency, or endorsement of specific depression symptoms. Forty-eight percent of PD patients, 37.3% of dystonia patients, and 34% of ET patients were found to be at least mildly depressed (BDI score of 10 or higher). The most commonly endorsed symptoms were fatigability, difficulty with work, anhedonia, and sleep disturbance. Clinicians should be aware that depression is a frequent problem in dystonia and ET, in addition to PD, and inquire about depression symptoms in these patients so that they can be appropriately treated. 相似文献
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