全文获取类型
收费全文 | 2791篇 |
免费 | 321篇 |
国内免费 | 23篇 |
专业分类
耳鼻咽喉 | 51篇 |
儿科学 | 121篇 |
妇产科学 | 53篇 |
基础医学 | 269篇 |
口腔科学 | 54篇 |
临床医学 | 306篇 |
内科学 | 718篇 |
皮肤病学 | 139篇 |
神经病学 | 152篇 |
特种医学 | 176篇 |
外科学 | 470篇 |
综合类 | 100篇 |
现状与发展 | 30篇 |
预防医学 | 190篇 |
眼科学 | 29篇 |
药学 | 136篇 |
中国医学 | 11篇 |
肿瘤学 | 130篇 |
出版年
2024年 | 14篇 |
2023年 | 185篇 |
2022年 | 18篇 |
2021年 | 59篇 |
2020年 | 75篇 |
2019年 | 69篇 |
2018年 | 119篇 |
2017年 | 97篇 |
2016年 | 71篇 |
2015年 | 106篇 |
2014年 | 121篇 |
2013年 | 125篇 |
2012年 | 128篇 |
2011年 | 134篇 |
2010年 | 139篇 |
2009年 | 150篇 |
2008年 | 128篇 |
2007年 | 153篇 |
2006年 | 103篇 |
2005年 | 91篇 |
2004年 | 84篇 |
2003年 | 90篇 |
2002年 | 85篇 |
2001年 | 67篇 |
2000年 | 71篇 |
1999年 | 90篇 |
1998年 | 51篇 |
1997年 | 65篇 |
1996年 | 45篇 |
1995年 | 49篇 |
1994年 | 38篇 |
1993年 | 41篇 |
1992年 | 23篇 |
1991年 | 14篇 |
1990年 | 16篇 |
1989年 | 30篇 |
1988年 | 28篇 |
1987年 | 25篇 |
1986年 | 12篇 |
1985年 | 16篇 |
1984年 | 13篇 |
1983年 | 8篇 |
1982年 | 10篇 |
1981年 | 13篇 |
1980年 | 20篇 |
1978年 | 5篇 |
1977年 | 5篇 |
1976年 | 13篇 |
1975年 | 11篇 |
1974年 | 3篇 |
排序方式: 共有3135条查询结果,搜索用时 140 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.
Maria Gonzalez-Cao Cristina Carrera Juan Francisco Rodriguez Moreno Pedro Rodríguez-Jiménez Mónica Antoñanzas Basa Rosa Feltes Ochoa Teresa Puertolas Eva Muñoz-Couselo José Luis Manzano Ivan Marquez-Rodas Juan Martín-Liberal Ainara Soria Pilar Lopez Criado Almudena Garcia-Castaño Aram Boada Pablo Ayala de Miguel Susana Puig Guillermo Crespo Alfonso Berrocal 《Journal of the American Academy of Dermatology》2021,84(5):1412-1415
3.
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
4.
L Crespo J Graus F García-Hoz R Bárcena L Gil Grande V F Moreira J M Milicua J Sánchez J Blázquez 《Revista española de enfermedades digestivas》2007,99(11):667-670
Hepatic encephalopathy is a reversible state of altered cognition that may occur in patients with acute or chronic liver disease or porto-systemic shunt, and in which known neurological or psychiatric signs may develop. Nitrogenated substances from intestinal digestion reach the brain without being cleared by their passage through the liver due to the presence of porto-systemic shunt. We report two cases of patients with porto-systemic shunt diagnosed with recurrent chronic hepatic encephalopathy refractory to conventional medical treatment. They were satisfactorily treated with shunt embolization using interventionist radiology techniques. 相似文献
5.
6.
7.
8.
9.
10.
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