全文获取类型
收费全文 | 5118篇 |
免费 | 383篇 |
国内免费 | 27篇 |
专业分类
耳鼻咽喉 | 65篇 |
儿科学 | 194篇 |
妇产科学 | 143篇 |
基础医学 | 676篇 |
口腔科学 | 118篇 |
临床医学 | 664篇 |
内科学 | 898篇 |
皮肤病学 | 132篇 |
神经病学 | 676篇 |
特种医学 | 116篇 |
外科学 | 549篇 |
综合类 | 42篇 |
一般理论 | 2篇 |
预防医学 | 478篇 |
眼科学 | 37篇 |
药学 | 320篇 |
中国医学 | 7篇 |
肿瘤学 | 411篇 |
出版年
2024年 | 7篇 |
2023年 | 80篇 |
2022年 | 123篇 |
2021年 | 155篇 |
2020年 | 130篇 |
2019年 | 171篇 |
2018年 | 186篇 |
2017年 | 160篇 |
2016年 | 175篇 |
2015年 | 184篇 |
2014年 | 204篇 |
2013年 | 308篇 |
2012年 | 395篇 |
2011年 | 388篇 |
2010年 | 192篇 |
2009年 | 194篇 |
2008年 | 337篇 |
2007年 | 311篇 |
2006年 | 260篇 |
2005年 | 258篇 |
2004年 | 233篇 |
2003年 | 225篇 |
2002年 | 211篇 |
2001年 | 52篇 |
2000年 | 41篇 |
1999年 | 54篇 |
1998年 | 52篇 |
1997年 | 40篇 |
1996年 | 22篇 |
1995年 | 21篇 |
1994年 | 33篇 |
1993年 | 22篇 |
1992年 | 22篇 |
1991年 | 25篇 |
1990年 | 27篇 |
1989年 | 21篇 |
1988年 | 16篇 |
1987年 | 9篇 |
1986年 | 16篇 |
1985年 | 11篇 |
1984年 | 18篇 |
1983年 | 14篇 |
1982年 | 16篇 |
1981年 | 9篇 |
1980年 | 17篇 |
1979年 | 11篇 |
1978年 | 14篇 |
1976年 | 7篇 |
1973年 | 10篇 |
1972年 | 6篇 |
排序方式: 共有5528条查询结果,搜索用时 15 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.
4.
5.
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
6.
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
7.
Trine Juhler N?ttrup Stine Sofia Korreman Anders Navrsted Pedersen Lasse Rye Aarup H?kan Nystr?m Mikael Olsen Lena Specht 《Radiotherapy and oncology》2007,84(1):40-48
BACKGROUND AND PURPOSE: This study aimed at quantifying the breathing variations among lung cancer patients over full courses of fractionated radiotherapy. The intention was to relate these variations to the margins assigned to lung tumours, to account for respiratory motion, in fractionated radiotherapy. MATERIALS AND METHODS: Eleven lung cancer patients were included in the study. The patients' chest wall motions were monitored as a surrogate measure for breathing motion during each fraction of radiotherapy by use of an external optical marker. The exhale level variations were evaluated with respect to exhale points and fraction-baseline, defined for intra- and interfraction variations respectively. The breathing amplitude was evaluated as breathing cycle amplitudes and fraction-max-amplitudes defined for intra- and interfraction breathing, respectively. RESULTS: The breathing variations over a full treatment course, including both intra- and interfraction variations, were 15.2mm (median over the patient population), range 5.5-26.7mm, with the variations in exhale level as the major contributing factor. The median interfraction span in exhale level was 14.8mm, whereas the median fraction-max-amplitude was 6.1mm (median of patient individual SD 1.4). The median intrafraction span in exhale level was 1.6mm, and the median breathing cycle amplitude was 4.0mm (median of patient individual SD 1.4). CONCLUSIONS: The variations in externally measured exhale levels are larger than variations in breathing amplitude. The interfraction variations in exhale level are in general are up to 10 times larger than intrafraction variations. Margins to account for respiratory motion cannot safely be based on one planning session, especially not if relying on measuring external marker motion. Margins for lung tumours should include interfraction variations in breathing. 相似文献
8.
9.
10.
The platelet and the neuron: Two cells in focus in migraine 总被引:1,自引:0,他引:1
Reports of platelet abnormalities in migraine are abundant, and the present paper discusses the role of platelets in the migraine aetiology. Platelets are considered good models for pre- and post-synaptic functions in serotonergic neurons. We propose that migraine is associated with a lowered threshold for stimulus response in both platelets and serotonergic neurons and that the alterations in platelet function reflect central serotonergic disturbances. The platelet abnormalities in migraine approach those found in depression, and there are several links between the two disorders. The clinical significance of platelet hyperactivity in migraineurs for the occurrence of thrombotic disorders is also discussed. Studies of platelet functions in migraine, using platelets as models for serotonergic neurons, may broaden our understanding of the neuronal processes that take place during a migraine attack. The platelet can also be an investigative tool for better understanding of the modes of action of anti-migraine drugs. 相似文献