全文获取类型
收费全文 | 438篇 |
免费 | 31篇 |
专业分类
耳鼻咽喉 | 5篇 |
儿科学 | 23篇 |
妇产科学 | 20篇 |
基础医学 | 53篇 |
口腔科学 | 18篇 |
临床医学 | 54篇 |
内科学 | 84篇 |
皮肤病学 | 9篇 |
神经病学 | 29篇 |
特种医学 | 22篇 |
外科学 | 43篇 |
综合类 | 2篇 |
一般理论 | 1篇 |
预防医学 | 43篇 |
眼科学 | 14篇 |
药学 | 31篇 |
中国医学 | 3篇 |
肿瘤学 | 15篇 |
出版年
2024年 | 1篇 |
2023年 | 10篇 |
2022年 | 18篇 |
2021年 | 36篇 |
2020年 | 19篇 |
2019年 | 25篇 |
2018年 | 31篇 |
2017年 | 24篇 |
2016年 | 23篇 |
2015年 | 16篇 |
2014年 | 24篇 |
2013年 | 36篇 |
2012年 | 32篇 |
2011年 | 37篇 |
2010年 | 21篇 |
2009年 | 13篇 |
2008年 | 17篇 |
2007年 | 18篇 |
2006年 | 8篇 |
2005年 | 7篇 |
2004年 | 8篇 |
2003年 | 5篇 |
2002年 | 13篇 |
2001年 | 6篇 |
2000年 | 4篇 |
1999年 | 6篇 |
1996年 | 1篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1988年 | 3篇 |
1984年 | 1篇 |
1975年 | 1篇 |
1974年 | 1篇 |
1965年 | 1篇 |
排序方式: 共有469条查询结果,搜索用时 31 毫秒
1.
2.
3.
4.
Chung‐Ying Lin Vida Imani Mark D. Griffiths Anders Brostrm Annette Nygrdh Zsolt Demetrovics Amir H. Pakpour 《Journal of sleep research》2021,30(1):e13076
The extant literature has suggested relationships between an individual's chronotype (in relation to morningness/eveningness) and several outcomes, including addictive disorders, psychological distress and daytime sleepiness. Moreover, sleep quality has been proposed to be a mediator in the aforementioned relationships. Consequently, the aim of the present study was to investigate the complex relationship between morningness/eveningness, problematic social media use, psychological distress and daytime sleepiness, with the potential mediators of sleep quality and insomnia. All participants (N = 1,791 [30.1% males]; mean age = 27.2 years, SD = 10.1) completed a battery of psychometric scales, including a reduced version of the Morningness‐Eveningness Questionnaire (at baseline), the Pittsburgh Sleep Quality Index and Insomnia Severity Index (1 month after baseline assessment), the Bergen Social Media Addiction Scale, the Hospital Anxiety and Depression Scale, and the Epworth Sleepiness Scale (2 months after baseline assessment). The impacts of morningness‐eveningness on problematic social media use, anxiety, depression and daytime sleepiness were found in the mediation models. Furthermore, the mediated effects of insomnia and sleep quality were observed. The present study's results emphasize the importance of promoting healthy sleep habits and sleep hygiene behaviours, and that of early detection of sleep problems among individuals who have the eveningness chronotype, because this would significantly improve their health outcomes. 相似文献
5.
Background
Human immunodeficiency virus (HIV)-1 infection increases the burden of malaria by increasing susceptibility to infection and decreasing the response to malarial treatment. HIV-1 has also been found to suppress the immune system and predispose to severe forms of malaria in adults. There is still a paucity of data on the association between HIV-1 infection and cerebral malaria in children. The aim of this study was to determine whether HIV-1 infection is a risk factor for cerebral malaria in children. 相似文献6.
7.
Rebecka Hjort Emma Ahlqvist Per-Ola Carlsson Valdemar Grill Leif Groop Mats Martinell Bahareh Rasouli Anders Rosengren Tiinamaija Tuomi Bjørn Olav Åsvold Sofia Carlsson 《Diabetologia》2018,61(6):1333-1343
Aims/hypothesis
Excessive weight is a risk factor for type 2 diabetes, but its role in the promotion of autoimmune diabetes is not clear. We investigated the risk of latent autoimmune diabetes in adults (LADA) in relation to overweight/obesity in two large population-based studies.Methods
Analyses were based on incident cases of LADA (n?=?425) and type 2 diabetes (n?=?1420), and 1704 randomly selected control participants from a Swedish case–control study and prospective data from the Norwegian HUNT Study including 147 people with LADA and 1,012,957 person-years of follow-up (1984–2008). We present adjusted ORs and HRs with 95% CI.Results
In the Swedish data, obesity was associated with an increased risk of LADA (OR 2.93, 95% CI 2.17, 3.97), which was even stronger for type 2 diabetes (OR 18.88, 95% CI 14.29, 24.94). The association was stronger in LADA with low GAD antibody (GADA; <median) (OR 4.25; 95% CI 2.76, 6.52) but present also in LADA with high GADA (OR 2.14; 95% CI 1.42, 3.24). In the Swedish data, obese vs normal weight LADA patients had lower GADA levels, better beta cell function, and were more likely to have low-risk HLA-genotypes. The combination of overweight and family history of diabetes (FHD) conferred an OR of 4.57 (95% CI 3.27, 6.39) for LADA and 24.51 (95% CI 17.82, 33.71) for type 2 diabetes. Prospective data from HUNT indicated even stronger associations; HR for LADA was 6.07 (95% CI 3.76, 9.78) for obesity and 7.45 (95% CI 4.02, 13.82) for overweight and FHD.Conclusions/interpretation
Overweight/obesity is associated with increased risk of LADA, particularly when in combination with FHD. These findings support the hypothesis that, even in the presence of autoimmunity, factors linked to insulin resistance, such as excessive weight, could promote onset of diabetes.8.
Masoud Mohammad Andalib Masoud Mohammad Malekzadeh Zahra Agharahimi Maede Daryabeigi Bahareh Yaghmaei Mahmoud-Reza Ashrafi Ali Rabbani Nima Rezaei 《Iranian journal of pediatrics.》2015,25(5)
Background:
Tertiary pediatric hospitals usually provide excellent clinical services, but such centers have a lot to do for educational perfection.Objectives:
This study was performed to address under-graduate educational deficits and find feasible solutions.Patients and Methods:
This cross-sectional study was done in a target population of 77 sixth year undergraduate medical students (response rate = 78%) who spent their 3-month pediatric rotation in the Children’s Medical Center, the Pediatrics Center of Excellence in Tehran, Iran. The Dundee ready educational environment measure (DREEM) instrument was used for assessing educational environment of this subspecialized pediatric hospital.Results:
Among 60 students who answered the questionnaires, 24 were male (40%). Participants’ age ranged from 23 to 24 years. The mean total score was 95.8 (48%). Comparison of scores based on students’ knowledge showed no significant difference. Problematic areas were learning, academic self-perception, and social self-perception.Conclusions:
Having an accurate schedule to train general practitioner, using new teaching methods, and providing a non-stressful atmosphere were suggested solutions. 相似文献9.
Gholamigeravand Bahareh Shahidi Siamak Amiri Iraj Samzadeh-kermani Alireza Abbasalipourkabir Roghayeh Soleimani Asl Sara 《Metabolic brain disease》2021,36(6):1259-1266
Metabolic Brain Disease - Alzheimer’s disease is the most common neurodegenerative disease associated with deposition of amyloid-beta and the increased oxidative stress. High free radical... 相似文献
10.
Maryam Khazdouz Majid Sezavar Bahareh Imani Hossein Akhavan Alireza Babapour Gholamreza Khademi 《African Journal of Paediatric Surgery》2015,12(2):143-147