全文获取类型
收费全文 | 1351篇 |
免费 | 98篇 |
国内免费 | 6篇 |
专业分类
耳鼻咽喉 | 27篇 |
儿科学 | 63篇 |
妇产科学 | 15篇 |
基础医学 | 157篇 |
口腔科学 | 35篇 |
临床医学 | 158篇 |
内科学 | 295篇 |
皮肤病学 | 17篇 |
神经病学 | 58篇 |
特种医学 | 233篇 |
外科学 | 84篇 |
综合类 | 20篇 |
预防医学 | 101篇 |
眼科学 | 22篇 |
药学 | 94篇 |
中国医学 | 8篇 |
肿瘤学 | 68篇 |
出版年
2022年 | 10篇 |
2021年 | 13篇 |
2020年 | 8篇 |
2019年 | 9篇 |
2018年 | 18篇 |
2017年 | 16篇 |
2016年 | 17篇 |
2015年 | 27篇 |
2014年 | 34篇 |
2013年 | 38篇 |
2012年 | 50篇 |
2011年 | 37篇 |
2010年 | 41篇 |
2009年 | 38篇 |
2008年 | 34篇 |
2007年 | 47篇 |
2006年 | 30篇 |
2005年 | 34篇 |
2004年 | 34篇 |
2003年 | 28篇 |
2002年 | 40篇 |
2001年 | 24篇 |
2000年 | 25篇 |
1999年 | 21篇 |
1998年 | 50篇 |
1997年 | 62篇 |
1996年 | 57篇 |
1995年 | 51篇 |
1994年 | 63篇 |
1993年 | 38篇 |
1992年 | 26篇 |
1991年 | 21篇 |
1990年 | 30篇 |
1989年 | 25篇 |
1988年 | 42篇 |
1987年 | 23篇 |
1986年 | 38篇 |
1985年 | 42篇 |
1984年 | 24篇 |
1983年 | 24篇 |
1982年 | 26篇 |
1981年 | 11篇 |
1980年 | 13篇 |
1979年 | 9篇 |
1978年 | 12篇 |
1977年 | 15篇 |
1976年 | 17篇 |
1975年 | 14篇 |
1972年 | 8篇 |
1971年 | 7篇 |
排序方式: 共有1455条查询结果,搜索用时 15 毫秒
101.
102.
103.
Relapsing polychondritis studied by computed tomography 总被引:1,自引:0,他引:1
Computed tomographic findings in a patient with relapsing polychondritis are described. Collapse of the cartilage of the nose and calcification in cartilages of the ears were clearly demonstrated. CT scanning was also helpful in evaluating the tracheobronchial tree for airway compromise, which could prove fatal in this condition. 相似文献
104.
105.
106.
107.
108.
The present study examined the effect of glycerol ingestion on aspects of auditory performance in subjects having Ménière's disease. It was hypothesized that Ménière's disease may be associated with abnormal firing in the auditory nerve and that this should result in a decreased ability to code the auditory temporal fine structure. Psychoacoustical measures of interaural time discrimination and quasi frequency modulation rate discrimination were used as measures of temporal coding, and performance on these tasks was examined both before and after glycerol ingestion. Pre- and postglycerol measures of speech recognition and audiometric thresholds were also obtained. In agreement with previous results, glycerol-related changes in audiometric thresholds were modest or absent, but improvements in speech recognition were relatively reliable. Improvements in interaural time discrimination and quasi frequency modulation rate discrimination were also observed. The results provide limited support for the hypothesis that Ménière's disease may be associated with a reduced ability to code the temporal fine structure of sound. 相似文献
109.
110.
Logan PM 《Irish journal of medical science》2004,173(1):7-8
Background Lung cancer is the most common cause of cancer-related death in Ireland. There are few complete data sets available as to
the stage and cell type of lung cancers at time of presentation in Ireland.
Aim To audit the lung cancers presenting to a large Dublin teaching hospital over a 12-month period.
Method Prospective evaluation of all lung tumours presenting to our institution over a consecutive 12-month period.
Results One hundred and ninety-eight lung cancers presented over the study period. There were 34 cases of small cell carcinoma and
150 cases of non-small cell carcinoma (NSCC). Fourteen patients were too ill or compromised at time of presentation for tissue
confirmation. The most common cell type was squamous carcinoma. Eighty-four per cent of the NSCCs were either stage 3 or 4
at presentation.
Conclusion Most lung cancers present late in the time course of the disease. Distribution of cell type and location are similar in Ireland
and other developed countries. 相似文献