全文获取类型
收费全文 | 414篇 |
免费 | 29篇 |
国内免费 | 6篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 28篇 |
妇产科学 | 4篇 |
基础医学 | 39篇 |
口腔科学 | 7篇 |
临床医学 | 38篇 |
内科学 | 81篇 |
皮肤病学 | 13篇 |
神经病学 | 21篇 |
特种医学 | 73篇 |
外科学 | 35篇 |
综合类 | 19篇 |
一般理论 | 1篇 |
预防医学 | 31篇 |
眼科学 | 15篇 |
药学 | 16篇 |
中国医学 | 1篇 |
肿瘤学 | 26篇 |
出版年
2023年 | 5篇 |
2022年 | 4篇 |
2021年 | 5篇 |
2020年 | 12篇 |
2019年 | 9篇 |
2018年 | 9篇 |
2017年 | 9篇 |
2016年 | 10篇 |
2015年 | 7篇 |
2014年 | 19篇 |
2013年 | 15篇 |
2012年 | 10篇 |
2011年 | 12篇 |
2010年 | 17篇 |
2009年 | 28篇 |
2008年 | 16篇 |
2007年 | 13篇 |
2006年 | 12篇 |
2005年 | 6篇 |
2004年 | 6篇 |
2003年 | 8篇 |
2002年 | 4篇 |
2001年 | 6篇 |
2000年 | 5篇 |
1999年 | 6篇 |
1998年 | 16篇 |
1997年 | 11篇 |
1996年 | 18篇 |
1995年 | 12篇 |
1994年 | 14篇 |
1993年 | 19篇 |
1992年 | 8篇 |
1991年 | 5篇 |
1990年 | 6篇 |
1989年 | 8篇 |
1988年 | 11篇 |
1987年 | 12篇 |
1986年 | 7篇 |
1985年 | 10篇 |
1984年 | 2篇 |
1983年 | 1篇 |
1982年 | 5篇 |
1981年 | 7篇 |
1980年 | 6篇 |
1979年 | 2篇 |
1978年 | 4篇 |
1977年 | 5篇 |
1976年 | 3篇 |
1975年 | 2篇 |
1971年 | 2篇 |
排序方式: 共有449条查询结果,搜索用时 50 毫秒
101.
102.
103.
KS Wenk KC Arrington A Ehrlich 《Journal of the European Academy of Dermatology and Venereology》2011,25(4):383-391
Several recent studies have found an increased prevalence of non‐alcoholic fatty liver disease within psoriasis patients. The exact pathophysiological mechanisms behind these observations are unclear, but are likely related to the high prevalence of obesity and metabolic syndrome within this patient population. Chronic inflammation, mediated by either proinflammatory adipokines or skin‐derived cytokines, may contribute to fatty liver disease development by increasing insulin resistance which in turn promotes hepatic lipid accumulation. These same adipokines in addition to hepatic cytokines may act on the skin to influence psoriasis disease severity. 相似文献
104.
105.
106.
107.
108.
Paddy KC Janssen ;Ron van Schaik ;Berend Olivier ;Marcel D Waldinger 《Asian journal of andrology》2014,16(4):607-610
It has been postulated that the persistent short intravaginal ejaculation latency time (IELT) of men with lifelong premature ejaculation (LPE) is related to 5-hydroxytryptamine (HT)2c receptor functioning. The aim of this study was to investigate the relationship of Cys23Ser 5-HT2c receptor gene polymorphism and the duration of IELT in men with LPE. Therefore, a prospective study was conducted in 64 Dutch Caucasian men with LPE. Baseline IELT during coitus was assessed by stopwatch over a 1-month period. All men were genotyped for Cys23Ser 5-HT2c receptor gene polymorphism. Allele frequencies and genotypes of Cys and Ser variants of 5-HT2c receptor gene polymorphism were determined. Association between Cys/Cys and Ser/Ser genotypes and the natural logarithm of the IELT in men with LPE were.investigated. As a result, the geometric mean, median and natural mean IELT were 25.2, 27.0, 33.9s, respectively. Of all men, 20.0%, 10.8%, 23.1% and 41.5% ejaculated within 10, 10-20, 20-30 and 30-60s after vaginal penetration. Of the 64 men, the Cys/Cys and Ser/Ser genotype frequency for the Cys23Ser polymorphism of the 5-HT2c receptor gene was 81% and 19%, respectively. The geometric mean IELT of the wildtypes (Cys/Cys) is significantly lower (22.6s; 95% CI 18.3-27.8s) than in male homozygous mutants (Ser/Ser) (40.4s; 95% CI 20.3-80.4s) (P = 0.03). It is concluded that Cys23Ser 5-HT2c receptor gene polymorphism is associated with the IELT in men with LPE. Men with Cys/Cys genotype have shorter IELTs than men with Ser/Ser genotypes. 相似文献
109.
110.