全文获取类型
收费全文 | 2095篇 |
免费 | 263篇 |
国内免费 | 20篇 |
专业分类
耳鼻咽喉 | 22篇 |
儿科学 | 66篇 |
妇产科学 | 26篇 |
基础医学 | 214篇 |
口腔科学 | 41篇 |
临床医学 | 311篇 |
内科学 | 394篇 |
皮肤病学 | 109篇 |
神经病学 | 175篇 |
特种医学 | 158篇 |
外科学 | 253篇 |
综合类 | 102篇 |
现状与发展 | 30篇 |
预防医学 | 214篇 |
眼科学 | 32篇 |
药学 | 54篇 |
中国医学 | 3篇 |
肿瘤学 | 174篇 |
出版年
2024年 | 18篇 |
2023年 | 182篇 |
2022年 | 18篇 |
2021年 | 32篇 |
2020年 | 61篇 |
2019年 | 37篇 |
2018年 | 71篇 |
2017年 | 61篇 |
2016年 | 48篇 |
2015年 | 74篇 |
2014年 | 112篇 |
2013年 | 87篇 |
2012年 | 80篇 |
2011年 | 72篇 |
2010年 | 102篇 |
2009年 | 119篇 |
2008年 | 70篇 |
2007年 | 93篇 |
2006年 | 84篇 |
2005年 | 56篇 |
2004年 | 53篇 |
2003年 | 55篇 |
2002年 | 52篇 |
2001年 | 42篇 |
2000年 | 40篇 |
1999年 | 66篇 |
1998年 | 51篇 |
1997年 | 65篇 |
1996年 | 54篇 |
1995年 | 45篇 |
1994年 | 40篇 |
1993年 | 43篇 |
1992年 | 26篇 |
1991年 | 22篇 |
1990年 | 29篇 |
1989年 | 35篇 |
1988年 | 30篇 |
1987年 | 27篇 |
1986年 | 9篇 |
1985年 | 19篇 |
1984年 | 8篇 |
1983年 | 4篇 |
1982年 | 10篇 |
1981年 | 10篇 |
1980年 | 14篇 |
1978年 | 6篇 |
1976年 | 13篇 |
1975年 | 11篇 |
1974年 | 3篇 |
1959年 | 3篇 |
排序方式: 共有2378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.
H. M. A. Brink MD A. J. L. G. Pinckers A. M. Verbeek 《Documenta ophthalmologica. Advances in ophthalmology》1990,75(3-4):329-334
The electro-oculogram in 52 patients with a suspected malignant melanoma of the choroid or ciliary body was plotted in a diagram constructed for the differential diagnosis of malignant melanoma, metastasis, naevus and retinal detachment. Thirty-one patients were diagnosed as suffering from malignant melanoma on clinical grounds (19 histologically confirmed). Twenty-six were classified correctly as a melanoma using our EOG probability score. Rupture of Bruch's membrane and tumor localization were of no influence on the EOG classification. Accompanying retinal detachment lowered the Lp/Dt-ratio significantly without affecting the Dt, as was also the case in tumors with a prominence equal to or greater than 6mm when compared with smaller tumors. However melanomas were still classified correctly in the majority of the patients by means of EOG. We conclude that an acceptable differentiation can be made between melanomas, retinal detachments and naevi. Melanomas cannot be differentiated from choroidal metastases. 相似文献
4.
5.
Endosonography was carried out in a patient with an extensive juxtapapillary tumour. Radiology and endoscopy were unable to distinguish a villous adenoma from an invasive carcinoma. Endosonography revealed a mucosal hypoechoic tumour without penetration into the submucosa and muscularis propria. The common bile duct, pancreatic duct, and pancreas were normal. Lymph node abnormalities were not found. Based on the endosonography findings, local surgical tumour resection was undertaken instead of a Whipple procedure. The histology of the resected specimen confirmed the endosonography diagnosis. 相似文献
6.
7.
8.
9.
10.
A double or bilobar gallbladder as a cause of severe complications after (laparoscopic) cholecystectomy 总被引:1,自引:1,他引:0
A double or bilobar gallbladder is a rare congenital anomaly. If not recognized during preoperative evaluation or operation, it can cause severe complications. We describe two cases in which a second operation had to be performed because of the presence of a second or bilobar gallbladder that was not recognized in the preoperative evaluation and during (laparoscopic) cholecystectomy. The types of anomalies, the concomitant pathology, and treatment are discussed. 相似文献