全文获取类型
收费全文 | 450篇 |
免费 | 36篇 |
国内免费 | 8篇 |
专业分类
耳鼻咽喉 | 9篇 |
儿科学 | 18篇 |
妇产科学 | 19篇 |
基础医学 | 66篇 |
口腔科学 | 21篇 |
临床医学 | 53篇 |
内科学 | 95篇 |
皮肤病学 | 18篇 |
神经病学 | 52篇 |
特种医学 | 6篇 |
外科学 | 53篇 |
综合类 | 6篇 |
预防医学 | 23篇 |
眼科学 | 14篇 |
药学 | 27篇 |
中国医学 | 5篇 |
肿瘤学 | 9篇 |
出版年
2024年 | 1篇 |
2023年 | 15篇 |
2022年 | 17篇 |
2021年 | 23篇 |
2020年 | 20篇 |
2019年 | 13篇 |
2018年 | 33篇 |
2017年 | 27篇 |
2016年 | 32篇 |
2015年 | 42篇 |
2014年 | 31篇 |
2013年 | 47篇 |
2012年 | 36篇 |
2011年 | 34篇 |
2010年 | 30篇 |
2009年 | 21篇 |
2008年 | 19篇 |
2007年 | 12篇 |
2006年 | 7篇 |
2005年 | 11篇 |
2004年 | 7篇 |
2003年 | 6篇 |
2002年 | 1篇 |
2001年 | 3篇 |
2000年 | 3篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1997年 | 1篇 |
排序方式: 共有494条查询结果,搜索用时 0 毫秒
491.
Naiemeh Seyedfatemi Masoud Ahmadzad Asl Raheleh Bahrami Hamid Haghani 《Archives of Psychiatric Nursing》2021,35(3):290-295
Psycho-education may have a positive effect on family caregivers of clients with mental disorders, and promote positive psychological states such as hope. The present study aims to investigate the effect of virtual social network-based psycho-education on the hope of family caregivers of clients with severe mental disorders.This study is a quasi-experimental research with a control and experimental groups. The participants of the study were 72 family caregivers of clients with severe mental disorders (36 in each group). Data were collected using demographic questionnaire and Adult Hope Scale before the study, immediately after the end of the training (first post-test), and 4 weeks afterwards (second post-test). The experimental group received psycho-education through Telegram App for four weeks.The results of the demographic questionnaire showed that both groups were homogeneous. The results of the Adult Hope Scale indicated that the mean score of both control and experimental groups were statistically significant and increased in the experimental group (P < 0.001). In addition, the changes of hope score in the experimental group were statistically significant in the first post-test than the pre-test, and in the second post-test than the first post-test and pre-test (P < 0.001).The findings of this study suggested that virtual social network-based psycho-education promotes the hopes of the family caregivers of clients with severe mental disorders. Due to the low cost and fast access of people to virtual networks, the content of this educational program can be widely used for family caregivers. 相似文献
492.
Effect of Er:YAG laser enamel conditioning and moisture on the microleakage of a hydrophilic sealant
Zeynep Aslı Güçlü Andrew Paul Hurt Nazmiye Dönmez Nichola Jayne Coleman 《Odontology / the Society of the Nippon Dental University》2018,106(3):225-231
For a given sealant, successful pit and fissure sealing is principally governed by the enamel conditioning technique and the presence of moisture contamination. A new generation of hydrophilic resin sealants is reported to tolerate moisture. This study investigates the impact of Er:YAG laser pre-conditioning and moisture contamination on the microleakage of a recent hydrophilic sealant. Occlusal surfaces of extracted human molars were either acid etched (n = 30), or successively lased and acid etched (n = 30). Ten teeth from each group were either air-dried, water-contaminated, or saliva-contaminated prior to sealing with UltraSeal XT® hydro?. Samples were inspected for penetration of fuchsin dye following 3000 thermocycles between 5 and 50 °C, and the enamel–sealant interfaces were observed by scanning electron microscopy (SEM). Significant differences in microleakage were evaluated using the Mann–Whitney U test with Bonferroni adjustment (p = 0.05). Laser pre-conditioning significantly reduced dye penetration irrespective of whether the enamel surface was moist or dry. Microleakage of water-contaminated acid etched teeth was significantly greater than that of their air-dried or saliva-contaminated counterparts. SEM analysis demonstrated good adaptation in all groups with the exception of water-contaminated acid etched teeth which exhibited relatively wide gaps. In conclusion, this hydrophilic sealant tolerates the presence of saliva, although water was found to impair its sealing ability. Laser pre-conditioning significantly decreases microleakage in all cases. 相似文献
493.
Saeed Farajzadeh Valilou Javad Karimzad Hagh Mohammad Salimi Asl Isa Abdi Rad Masoud Edizadeh Arash Pooladi 《Clinical Case Reports》2021,9(8)
The report of LMNB2‐related progressive myoclonus epilepsy and ataxia due to missense homozygous c.473G>T variant. 相似文献
494.
Nasrin Saki Fatemeh Sari Aslani Mozhdeh Sepaskhah Mohadese Shafiei Sara Alavizadeh Seyed Ali Hosseini Fatemeh Ansari Asl Najmeh Ahramiyanpour 《Clinical Case Reports》2022,10(8)
Various conditions, including infections, can cause telogen effluvium (TE). One of them is coronavirus disease 2019 (COVID‐19), where hair loss usually begins between 2 and 12 weeks after the illness. TE can be acute or chronic, and the chronic type can be intermittent. Here, we present the case of a 17‐year‐old girl with severe and widespread hair loss following an upper respiratory infection suspected to be COVID‐19, with the patient having a history of such attacks since childhood. Evidence from biopsy and dermoscopy indicated a diagnosis of TE. 相似文献