全文获取类型
收费全文 | 13409篇 |
免费 | 1107篇 |
国内免费 | 50篇 |
专业分类
耳鼻咽喉 | 130篇 |
儿科学 | 496篇 |
妇产科学 | 293篇 |
基础医学 | 1760篇 |
口腔科学 | 408篇 |
临床医学 | 1517篇 |
内科学 | 2265篇 |
皮肤病学 | 240篇 |
神经病学 | 1426篇 |
特种医学 | 494篇 |
外科学 | 1974篇 |
综合类 | 180篇 |
一般理论 | 6篇 |
预防医学 | 1217篇 |
眼科学 | 197篇 |
药学 | 761篇 |
中国医学 | 15篇 |
肿瘤学 | 1187篇 |
出版年
2023年 | 97篇 |
2022年 | 140篇 |
2021年 | 250篇 |
2020年 | 193篇 |
2019年 | 261篇 |
2018年 | 300篇 |
2017年 | 233篇 |
2016年 | 282篇 |
2015年 | 280篇 |
2014年 | 390篇 |
2013年 | 528篇 |
2012年 | 735篇 |
2011年 | 740篇 |
2010年 | 367篇 |
2009年 | 358篇 |
2008年 | 639篇 |
2007年 | 627篇 |
2006年 | 594篇 |
2005年 | 542篇 |
2004年 | 533篇 |
2003年 | 505篇 |
2002年 | 496篇 |
2001年 | 316篇 |
2000年 | 332篇 |
1999年 | 328篇 |
1998年 | 144篇 |
1997年 | 122篇 |
1995年 | 107篇 |
1994年 | 101篇 |
1993年 | 83篇 |
1992年 | 255篇 |
1991年 | 269篇 |
1990年 | 246篇 |
1989年 | 246篇 |
1988年 | 217篇 |
1987年 | 255篇 |
1986年 | 223篇 |
1985年 | 192篇 |
1984年 | 163篇 |
1983年 | 135篇 |
1982年 | 88篇 |
1981年 | 88篇 |
1979年 | 143篇 |
1978年 | 109篇 |
1977年 | 88篇 |
1976年 | 80篇 |
1974年 | 79篇 |
1973年 | 96篇 |
1972年 | 87篇 |
1971年 | 81篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
Hassen Lena M. Albarrak Rana A. Albahlal Reem A. Alsaqabi Dimah K. Hassen Ikhlass M. Daghestani Maha H. Alqurtas Eman M. Alkhalaf Abdulaziz T. Bedaiwi Mohammed K. Omair Mohammed A. Almaghlouth Ibrahim A. 《Quality of life research》2022,31(11):3229-3239
Quality of Life Research - The COVID-19 pandemic might add to the stressors experienced by people living with rheumatic diseases. This study aimed to examine rheumatic patients’ functional... 相似文献
2.
3.
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
4.
5.
6.
7.
Hydration and Cognitive Function in Children 总被引:3,自引:0,他引:3
Kristen E. D'Anci PhD Florence Constant MD PhD Irwin H. Rosenberg MD 《Nutrition reviews》2006,64(10):457-464
Adequate fluid intake is critical for survival. While adults are at liberty to drink fluids as wanted, children and infants are dependent upon caregivers for food and fluid. Children are at greater risk for dehydration than adults due to their higher surface-to-mass ratio. Additionally, children have different thirst sensitivities and body cooling mechanisms than adults. Children differ from adults in total body water content, and boys and girls differ in body water content with maturation. Research in young adults shows that mild dehydration corresponding to only 1% to 2% of body weight loss can lead to significant impairment in cognitive function. Dehydration in infants is associated with confusion, irritability, and lethargy; in children, it may produce decrements in cognitive performance. 相似文献
8.
Lena Adamson 《The American journal of occupational therapy》2003,57(5):578-581
The purpose of the present study was to examine the self-image of a group of young persons with cerebral palsy. The respondents (3 girls and 4 boys, ages 12 to 17 years) were interviewed and asked to complete a personality inventory. The results from the personality inventory revealed that the respondents viewed themselves in a very positive manner and rated markedly higher than norm groups. This positive view corresponded well with the findings of the interview. The following conclusions are made: Further studies on self-image and the psychosocial development of adolescents with disabilities should (a) focus on the social interaction outside their immediate families, and (b) continue to use and develop methods where these adolescents can give voice to their own experiences and opinions. 相似文献
9.
10.
Ludger Grote MD PhD Lena Leissner MD Jan Hedner MD PhD Jan Ulfberg MD PhD 《Movement disorders》2009,24(10):1445-1452
Iron deficiency may exacerbate symptoms in the Restless Legs Syndrome (RLS). We investigated the effect of intravenous iron sucrose or placebo on symptoms in patients with RLS and mild to moderate iron deficit. Sixty patients with primary RLS (seven males, age 46 (9) years, S‐ferritin ≤45 μg/L) recruited from a cohort of 231 patients were randomly assigned in a 12‐months double‐blind, multi‐centre study of iron sucrose 1000 mg (n = 29) or saline (n = 31). The primary efficacy variable was the RLS severity scale (IRLS) score at week 11. Median IRLS score decreased from 24 to 7 (week 11) after iron sucrose and from 26 to 17 after placebo (P = 0.123, N.S. for between treatment comparison). The corresponding scores at week 7 were 12 and 20 in the two groups (P = 0.017). Drop out rate because of lack of efficacy at 12 months was 19/31 after placebo and 5/29 patients after iron sucrose (Kaplan–Meier estimate, log rank test P = 0.0006) suggesting an iron induced superior long term RLS symptom control. Iron sucrose was well tolerated. This study showed a lack of superiority of iron sucrose at 11 weeks but found evidence that iron sucrose reduced RLS symptoms both in the acute phase (7 weeks) and during long‐term follow up in patients with variable degree of iron deficiency. Further studies on target patient groups, dosing and dosing intervals are warranted before iron sucrose could be considered for treatment of iron deficient patients with RLS. © 2009 Movement Disorder Society 相似文献