全文获取类型
收费全文 | 1301篇 |
免费 | 58篇 |
国内免费 | 33篇 |
专业分类
耳鼻咽喉 | 26篇 |
儿科学 | 62篇 |
妇产科学 | 19篇 |
基础医学 | 113篇 |
口腔科学 | 27篇 |
临床医学 | 122篇 |
内科学 | 359篇 |
皮肤病学 | 109篇 |
神经病学 | 34篇 |
特种医学 | 207篇 |
外科学 | 116篇 |
综合类 | 29篇 |
预防医学 | 77篇 |
眼科学 | 8篇 |
药学 | 35篇 |
中国医学 | 3篇 |
肿瘤学 | 46篇 |
出版年
2019年 | 9篇 |
2018年 | 7篇 |
2017年 | 12篇 |
2016年 | 16篇 |
2015年 | 22篇 |
2014年 | 26篇 |
2013年 | 67篇 |
2012年 | 14篇 |
2011年 | 16篇 |
2010年 | 48篇 |
2009年 | 57篇 |
2008年 | 21篇 |
2007年 | 31篇 |
2006年 | 26篇 |
2005年 | 30篇 |
2004年 | 15篇 |
2003年 | 12篇 |
2002年 | 21篇 |
2001年 | 20篇 |
2000年 | 12篇 |
1999年 | 20篇 |
1998年 | 83篇 |
1997年 | 72篇 |
1996年 | 76篇 |
1995年 | 49篇 |
1994年 | 62篇 |
1993年 | 51篇 |
1992年 | 14篇 |
1991年 | 15篇 |
1990年 | 21篇 |
1989年 | 41篇 |
1988年 | 42篇 |
1987年 | 32篇 |
1986年 | 26篇 |
1985年 | 26篇 |
1984年 | 23篇 |
1983年 | 12篇 |
1982年 | 21篇 |
1981年 | 18篇 |
1980年 | 13篇 |
1979年 | 17篇 |
1978年 | 14篇 |
1977年 | 16篇 |
1976年 | 16篇 |
1975年 | 12篇 |
1973年 | 14篇 |
1972年 | 9篇 |
1971年 | 7篇 |
1965年 | 6篇 |
1957年 | 7篇 |
排序方式: 共有1392条查询结果,搜索用时 15 毫秒
81.
Multiple defects are often encountered in the treatment of malignant skin tumors. Nearby defects can present a reconstructive challenge since the closure of one defect may impact the closure of the other defect. The double O to Z flap design is ideally suited to combine the closure of adjacent defects into one technique. This flap technique and design is illustrated and described. Examples include defects on the forehead, temple, cheek, and nose following Mohs micrographic surgery. 相似文献
82.
83.
Parathyroid adenomas in the aortopulmonary window 总被引:3,自引:0,他引:3
84.
In the Orient there is a high frequency of residual intrahepatic stones after biliary tract surgery. Percutaneous removal of residual intrahepatic stones was attempted in a group of 74 patients. Stones were exclusively intrahepatic in 57 patients, whereas 17 patients also had stones in the common bile duct. Biliary strictures were present in 60 cases (81%). A combination of techniques was used, including preshaped angulated catheters, irrigation-suction, balloon dilation of strictures, and crushing of large stones. In 36 cases all stones were removed and in 14 cases most stones were removed, for a success rate of 67.6%. Biliary stricture was the factor most often responsible for failure. 相似文献
85.
86.
87.
S. Grioli C. Lomeo MC Quattropani G. Spignoli and C. Villardita 《Fundamental & clinical pharmacology》1990,4(2):169-173
Pyroglutamic acid (PCA) was compared with placebo in a randomized, double blind trial for assessing its efficacy in treating memory deficits in 40 aged subjects. Twenty subjects were treated with PCA and 20 with placebo over a period of 60 d. Memory functions were evaluated at baseline and after 60 d of treatment by means of a battery made up of 6 memory tasks. The results suggest that PCA is effective in improving some verbal memory functions in subjects affected by age-related memory decline. 相似文献
88.
89.
JD Fernandes† MC de Lorenzo Messina† ER de Almeida Pimentel† LGM Castro†‡§ 《Journal of the European Academy of Dermatology and Venereology》2008,22(6):704-706
In order to quantify presence of residual BCC in patients with histologic positive margins after the first excison and to correlate the presence of residual tumor in re‐excised lesions with the location of the positive margin on the first excision, a retrospective evaluation of 2053 surgically treated BCC was performed. Only 38.3% of the re‐excised lesions showed residual tumor. In the group of re‐excised lesions where residual BCC was found, 13% had lateral positive margin in the first excision, 39% had deep positive margin and 48% had both lateral and deep positive margins. In the group of re‐excised lesions where no residual BCC was found, 49% of the primary excised lesions had lateral positive margin, 32% had deep positive margin and 19% had both deep and lateral positive margins. The association between residual tumor and positive margins was statistically significant (p = 0.01). Our findings confirm that presence of residual tumour is more likely when both lateral and deep margins are compromised. 相似文献
90.