全文获取类型
收费全文 | 1068篇 |
免费 | 161篇 |
国内免费 | 5篇 |
专业分类
耳鼻咽喉 | 140篇 |
儿科学 | 32篇 |
妇产科学 | 13篇 |
基础医学 | 136篇 |
口腔科学 | 10篇 |
临床医学 | 150篇 |
内科学 | 188篇 |
皮肤病学 | 2篇 |
神经病学 | 75篇 |
特种医学 | 208篇 |
外科学 | 140篇 |
综合类 | 17篇 |
预防医学 | 41篇 |
眼科学 | 8篇 |
药学 | 44篇 |
肿瘤学 | 30篇 |
出版年
2023年 | 13篇 |
2022年 | 7篇 |
2021年 | 10篇 |
2020年 | 8篇 |
2018年 | 33篇 |
2017年 | 15篇 |
2016年 | 22篇 |
2015年 | 24篇 |
2014年 | 49篇 |
2013年 | 50篇 |
2012年 | 25篇 |
2011年 | 42篇 |
2010年 | 45篇 |
2009年 | 57篇 |
2008年 | 39篇 |
2007年 | 40篇 |
2006年 | 32篇 |
2005年 | 39篇 |
2004年 | 26篇 |
2003年 | 36篇 |
2002年 | 31篇 |
2001年 | 35篇 |
2000年 | 33篇 |
1999年 | 32篇 |
1998年 | 29篇 |
1997年 | 32篇 |
1996年 | 19篇 |
1995年 | 17篇 |
1994年 | 14篇 |
1993年 | 24篇 |
1992年 | 21篇 |
1991年 | 23篇 |
1990年 | 21篇 |
1989年 | 39篇 |
1988年 | 35篇 |
1987年 | 27篇 |
1986年 | 23篇 |
1985年 | 27篇 |
1984年 | 12篇 |
1983年 | 11篇 |
1982年 | 12篇 |
1981年 | 6篇 |
1980年 | 9篇 |
1979年 | 13篇 |
1978年 | 5篇 |
1977年 | 13篇 |
1976年 | 12篇 |
1975年 | 8篇 |
1974年 | 5篇 |
1972年 | 6篇 |
排序方式: 共有1234条查询结果,搜索用时 31 毫秒
1.
Tass H Malik Iain A Bruce Gerard Kelly Richard T Ramsden Shakeel R Saeed 《Skull base》2007,17(4):235-238
In cases of cerebrospinal fluid (CSF) rhinorrhea following lateral skull base surgery, fibrosis and fibrin formation resulting from meningitis has been postulated as a mechanism of spontaneously resolving the CSF leak. This study was undertaken to explore any possible relationship between the cessation of CSF leak and meningitis. A retrospective study at a tertiary referral center of 232 consecutive patients was performed. Out of a total of 232 procedures, 29 patients developed CSF rhinorrhea, of whom 7 subsequently developed meningitis. Bacteria were isolated in CSF obtained at lumbar puncture in 5 cases, with the CSF analysis in the remaining 2 cases suggesting aseptic meningitis. Conservative treatment failed to stop the CSF rhinorrhea in 6 of 7 cases. In this study, the development of meningitis did not appear to aid in the resolution of the CSF rhinorrhea. We conclude that surgical intervention should not be delayed in the expectation that meningitis and conservative interventions may promote CSF leak resolution. 相似文献
2.
3.
A sensitive assay for human plasma BzAO, involving the conversion of 14C-benzylamine to 14C-benzaldehyde, was developed. MPTP and several of its analogues were found to be competitive inhibitors of the enzyme. Ki values for the MPTP analogues in the presence of human plasma BzAO were determined. The analogues had a different rank order of inhibition of human plasma BzAO compared with the rank order of inhibition of bovine plasma BzAO found previously. MPTP and 1-methyl-4-(2-methylphenyl)-1,2,3,6-tetrahydropyridine (2'-CH3-MPTP), which are potent nigrostriatal toxins, were weak inhibitors of human plasma BzAO. 相似文献
4.
5.
6.
7.
A Pace-Balzan A O Keith J W Curley R T Ramsden H Lewis 《The Journal of laryngology and otology》1991,105(2):119-120
A case of meningitis secondary to acute suppurative otitis media in a previously healthy child is reported. The only organism isolated from blood after aerobic and prolonged anaerobic culture was identified as Fusobacterium necrophorum. Complete recovery followed treatment with surgery and prolonged antibiotic therapy. The role of anaerobes in the development of meningitis, the isolation and identification of Fusobacterium necrophorum, the clinical presentations of F. necrophorum infection and the choice of antibiotics in the treatment of these infections are discussed. 相似文献
8.
9.
10.