全文获取类型
收费全文 | 2014篇 |
免费 | 141篇 |
国内免费 | 4篇 |
专业分类
耳鼻咽喉 | 5篇 |
儿科学 | 45篇 |
妇产科学 | 64篇 |
基础医学 | 250篇 |
口腔科学 | 113篇 |
临床医学 | 160篇 |
内科学 | 514篇 |
皮肤病学 | 47篇 |
神经病学 | 172篇 |
特种医学 | 40篇 |
外科学 | 264篇 |
综合类 | 10篇 |
一般理论 | 1篇 |
预防医学 | 125篇 |
眼科学 | 54篇 |
药学 | 162篇 |
中国医学 | 15篇 |
肿瘤学 | 118篇 |
出版年
2023年 | 16篇 |
2022年 | 14篇 |
2021年 | 68篇 |
2020年 | 48篇 |
2019年 | 82篇 |
2018年 | 85篇 |
2017年 | 41篇 |
2016年 | 60篇 |
2015年 | 48篇 |
2014年 | 83篇 |
2013年 | 83篇 |
2012年 | 150篇 |
2011年 | 149篇 |
2010年 | 91篇 |
2009年 | 70篇 |
2008年 | 137篇 |
2007年 | 114篇 |
2006年 | 107篇 |
2005年 | 96篇 |
2004年 | 103篇 |
2003年 | 96篇 |
2002年 | 79篇 |
2001年 | 47篇 |
2000年 | 57篇 |
1999年 | 33篇 |
1998年 | 15篇 |
1997年 | 11篇 |
1996年 | 11篇 |
1995年 | 11篇 |
1994年 | 5篇 |
1993年 | 4篇 |
1992年 | 18篇 |
1991年 | 18篇 |
1990年 | 17篇 |
1989年 | 12篇 |
1988年 | 12篇 |
1987年 | 7篇 |
1986年 | 9篇 |
1985年 | 5篇 |
1984年 | 2篇 |
1983年 | 6篇 |
1982年 | 7篇 |
1981年 | 4篇 |
1980年 | 3篇 |
1978年 | 2篇 |
1975年 | 2篇 |
1974年 | 3篇 |
1970年 | 2篇 |
1969年 | 7篇 |
1968年 | 3篇 |
排序方式: 共有2159条查询结果,搜索用时 47 毫秒
1.
2.
3.
Mariela Dutra Gontijo Moura Soraya de Mattos Camargo Grossmann Linaena Méricy da Silva Fonseca Maria Inês Barreiros Senna Ricardo Alves Mesquita 《Journal of oral pathology & medicine》2006,35(6):321-326
BACKGROUND: Oral hairy leukoplakia (OHL) may be an indicator of the progression of Human Immunodeficiency Virus (HIV)-induced immuno-depression, and the evaluation of risk factors leading to OHL is important in the management of these HIV-infected patients. However, there are few studies that analyze risk factors leading to OHL in the Brazilian population. The aim of this case-control study is to present data about prevalence rates and risk factors leading to OHL in a sample of HIV-infected adults in Brazil. METHODS: This case-control study included 111 HIV-infected patients treated at a clinic for sexually transmitted diseases and HIV. In the initial examinations with dentists, variables were collected from all patients. Diagnosis of OHL was performed in accordance with the International Classification System and cytological features. The Fisher and the chi-squared tests were used for statistical analysis. The proportional prevalence and odds ratio were estimated. RESULTS: Outcome presented a positive, statistically significant association among the presence of OHL and viral load of 3000 copies/mul or greater (P = 0.0001; odds ratio (OR) = 5.8), presence of oral candidiasis (P = 0.0000; OR = 11.1), previous use of fluconazole (P = 0.0000; OR = 24.6), and use of systemic acyclovir (P = 0.032; OR = 4.3). Antiretroviral medication presented a negative, statistically significant association with the presence of OHL (P = 0.002; OR = 8.4). CONCLUSIONS: Prevalence of OHL was 28.8%. Viral load, oral candidiasis, previous use of fluconazole, and systemic acyclovir were determined to be risk factors for OHL. Antiretroviral medication proved to be protective against the development of OHL. 相似文献
4.
5.
6.
7.
Rectal diazepam in the treatment of absence status: a pharmacodynamic study 总被引:7,自引:1,他引:6 下载免费PDF全文
Norman Milligan Soraya Dhillon Alan Richens Jolyon Oxley 《Journal of neurology, neurosurgery, and psychiatry》1981,44(10):914-917
Rectal administration of diazepam is highly effective in terminating absence status as judged by reduction of spike-wave activity in the EEG. Pharmacokinetic studies indicate that diazepam can have antiepileptic properties at serum levels well below those previously reported as being necessary to achieve a therapeutic effect. 相似文献
8.
9.
10.
An eighth locus for autosomal dominant retinitis pigmentosa is linked to chromosome 17q 总被引:5,自引:2,他引:5
Bardienb Soraya; Ebenezer Neil; Greenberg Jacquie; Inglehearn Chris F.; Bartmann Lecia; Goliath Rene; Beighton Peter; Ramesar Rajkumar; Bhattacharya Shomi S. 《Human molecular genetics》1995,4(8):1459-1462
Retinitis pigmentosa is one of the most common causes of severevisual handicap in middle to late life. Prior to this report,seven loci had previously been mapped for the autosomal dominantform of this disorder (adRP). We now report the identificationof a novel adRP locus on chromosome 17q. To map the new locus,we performed linkage analysis with microsatellite markers ina large South African kindred. After exclusion of 13 RP candidategene loci (including rhodopsin and peripherin-RDS), we obtainedsignificant positive lod scores at zero recombination fraction( 相似文献