全文获取类型
收费全文 | 1262379篇 |
免费 | 96530篇 |
国内免费 | 1575篇 |
专业分类
耳鼻咽喉 | 16314篇 |
儿科学 | 41025篇 |
妇产科学 | 34952篇 |
基础医学 | 189418篇 |
口腔科学 | 34730篇 |
临床医学 | 117768篇 |
内科学 | 247838篇 |
皮肤病学 | 27278篇 |
神经病学 | 101867篇 |
特种医学 | 46768篇 |
外国民族医学 | 265篇 |
外科学 | 178673篇 |
综合类 | 25753篇 |
现状与发展 | 3篇 |
一般理论 | 568篇 |
预防医学 | 104661篇 |
眼科学 | 28048篇 |
药学 | 92567篇 |
6篇 | |
中国医学 | 2022篇 |
肿瘤学 | 69960篇 |
出版年
2018年 | 13539篇 |
2017年 | 10392篇 |
2016年 | 11325篇 |
2015年 | 13080篇 |
2014年 | 18002篇 |
2013年 | 27486篇 |
2012年 | 37580篇 |
2011年 | 39972篇 |
2010年 | 23057篇 |
2009年 | 22255篇 |
2008年 | 37765篇 |
2007年 | 40394篇 |
2006年 | 39978篇 |
2005年 | 39108篇 |
2004年 | 37556篇 |
2003年 | 35967篇 |
2002年 | 34874篇 |
2001年 | 56039篇 |
2000年 | 57055篇 |
1999年 | 48104篇 |
1998年 | 13404篇 |
1997年 | 12225篇 |
1996年 | 12645篇 |
1995年 | 11920篇 |
1994年 | 11109篇 |
1993年 | 10403篇 |
1992年 | 38204篇 |
1991年 | 37677篇 |
1990年 | 36457篇 |
1989年 | 35259篇 |
1988年 | 32693篇 |
1987年 | 32034篇 |
1986年 | 30533篇 |
1985年 | 28787篇 |
1984年 | 21943篇 |
1983年 | 19198篇 |
1982年 | 11369篇 |
1981年 | 10321篇 |
1979年 | 20947篇 |
1978年 | 15394篇 |
1977年 | 12792篇 |
1976年 | 11847篇 |
1975年 | 12810篇 |
1974年 | 15589篇 |
1973年 | 15364篇 |
1972年 | 14515篇 |
1971年 | 13553篇 |
1970年 | 12789篇 |
1969年 | 12070篇 |
1968年 | 11232篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
111.
Chumakov E. M. Petrova N. N. Limankin O. V. Ashenbrenner Yu. V. 《Neuroscience and behavioral physiology》2022,52(1):45-51
Neuroscience and Behavioral Physiology - Objective. To determine the frequency, structure, and severity of cognitive impairments in patients with bipolar affective disorder (BAD) in remission.... 相似文献
112.
Journal of Assisted Reproduction and Genetics - 相似文献
113.
Leyi Wang Saraswathi Lanka Debbie Cassout Nohra E. Mateus‐Pinilla Ganwu Li William C. Wilson Dongwan Yoo Paul Shelton Richard L. Fredrickson 《Transboundary and Emerging Diseases》2019,66(5):1809-1820
First described in 1955 in New Jersey, epizootic haemorrhagic disease (EHD) causes a severe clinical disease in wild and domestic ruminants worldwide. Epizootic haemorrhagic disease outbreaks occur in deer populations each year from summer to late autumn. The etiological agent is EHD virus (EHDV) which is a double‐stranded segmented icosahedral RNA virus. EHD virus utilizes point mutations and reassortment strategies to maintain viral fitness during infection. In 2018, EHDV serotype 2 was predominantly detected in deer in Illinois. Whole genome sequencing was conducted for two 2018 EHDV2 isolates (IL41747 and IL42218) and the sequence analyses indicated that IL42218 was a reassortant between different serotypes whereas IL41747 was a genetically stable strain. Our data suggest that multiple strains contribute to outbreaks each year. 相似文献
114.
115.
116.
117.
118.
119.
120.
W. Do T. Elzerman R. de Bree A. Rosenberg T. Forouzanfar E.M. Van Cann 《International journal of oral and maxillofacial surgery》2021,50(5):591-597
The aim of this study was to analyse the effect of body mass index (BMI), both low and high values, on the perioperative complication rate in patients with oral squamous cell carcinoma (OSCC). The medical records of 259 patients operated between 2014 and 2017 for OSCC were reviewed. Univariate and multivariate analyses were performed. Sixty of the 259 patients developed 87 complications. Low or high BMI was not associated with the perioperative complication rate. A longer operating time and increased blood loss were associated with a higher perioperative complication rate and higher Clavien–Dindo grade. Low BMI, American Society of Anesthesiologists score 2 and 3, a longer operating time, and increased blood loss were associated with a longer hospital stay. Low BMI was associated with a longer hospital stay. Neither low nor high BMI was associated with the perioperative complication rate. A longer operating time and increased blood loss were associated with a higher perioperative complication rate and higher Clavien–Dindo grade. 相似文献