全文获取类型
收费全文 | 700篇 |
免费 | 19篇 |
国内免费 | 1篇 |
专业分类
耳鼻咽喉 | 9篇 |
儿科学 | 7篇 |
妇产科学 | 6篇 |
基础医学 | 68篇 |
口腔科学 | 23篇 |
临床医学 | 90篇 |
内科学 | 122篇 |
皮肤病学 | 27篇 |
神经病学 | 29篇 |
特种医学 | 25篇 |
外科学 | 100篇 |
综合类 | 12篇 |
预防医学 | 47篇 |
眼科学 | 21篇 |
药学 | 111篇 |
中国医学 | 5篇 |
肿瘤学 | 18篇 |
出版年
2024年 | 7篇 |
2023年 | 18篇 |
2022年 | 22篇 |
2021年 | 37篇 |
2020年 | 30篇 |
2019年 | 45篇 |
2018年 | 46篇 |
2017年 | 27篇 |
2016年 | 27篇 |
2015年 | 27篇 |
2014年 | 37篇 |
2013年 | 49篇 |
2012年 | 59篇 |
2011年 | 75篇 |
2010年 | 38篇 |
2009年 | 21篇 |
2008年 | 28篇 |
2007年 | 40篇 |
2006年 | 29篇 |
2005年 | 17篇 |
2004年 | 5篇 |
2003年 | 3篇 |
2002年 | 9篇 |
2001年 | 2篇 |
2000年 | 1篇 |
1999年 | 3篇 |
1998年 | 1篇 |
1996年 | 1篇 |
1995年 | 3篇 |
1994年 | 6篇 |
1993年 | 1篇 |
1992年 | 2篇 |
1991年 | 1篇 |
1988年 | 3篇 |
排序方式: 共有720条查询结果,搜索用时 15 毫秒
81.
82.
83.
The present study examined the effects of two models of work–family conflict (WFC) and job‐strain on the job‐related and context‐free well‐being of employees. The participants of the study consisted of Iranian employees from a variety of organizations. The effects of three dimensions of the job‐strain model and six forms of WFC on affective well‐being were assessed. The results of hierarchical multiple regression analysis revealed that the number of working hours, strain‐based work interfering with family life (WIF) along with job characteristic variables (i.e. supervisory support, job demands and job control) all make a significant contribution to the prediction of job‐related well‐being. On the other hand, strain‐based WIF and family interfering with work (FIW) significantly predicted context‐free well‐being. Implications are drawn and recommendations made regarding future research and interventions in the workplace. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
84.
85.
Saman Zamani Marziyeh Farnia Saman Tavakoli Mehran Gholizadeh Mohammad Nazari Ali-Akbar Seddighi Hamidreza Setayesh Parviz Afshar Masahiro Kihara 《The International journal on drug policy》2010,21(3):167-172
BackgroundThis study aimed to investigate the context in which methadone maintenance treatment (MMT) is provided for opioid-dependent prisoners, and to identify barriers against further scale-up of MMT in Ghezel Hesar prison in Tehran.MethodsThis was a cross-sectional qualitative study using field observations, focus group discussions, and individual interviews. In total, 30 prisoners and 15 prison staff and health policymakers participated in this study in November 2006.ResultsThe rate of drug injecting in the prison unit was unanimously reported to have decreased drastically since introducing the MMT program. In addition to the health benefits to MMT recipients, interview data indicates that MMT has had positive effects on socio-economic status of prisoners’ families. Nevertheless, several impediments to the provision of MMT services and to its further expansion were also identified, including staff shortages, some degree of methadone diversion, widespread concerns over the possible side effects of methadone, and the stigma attached to methadone treatment.ConclusionMMT constitutes one of the main components of the Iran Prison Organization's comprehensive HIV prevention package and is becoming increasingly accessible to opioid-dependent prisoners in Iran. Our findings indicate that the MMT program in Ghezel Hesar prison has been helpful for many opioid-dependent prisoners to reduce their risk of drug-related harm and to ease social and financial burden over their families. Meanwhile, existing barriers against provision of MMT should be properly addressed before further scale up of the program. 相似文献
86.
Silk-elastinlike protein polymers (SELPs) are recombinant polymers designed from silk fibroin and mammalian elastin amino acid repeats. These are versatile materials that have been examined as controlled release systems for intratumoral gene delivery. SELP hydrogels comprise monodisperse and tunable polymers that have the capability to control and localize the release and expression of plasmid DNA and viruses. This article reviews recent developments in the synthesis and characterization of SELP hydrogels and their use for matrix-mediated gene delivery. 相似文献
87.
88.
89.
Mohammad Saeid Rezaee Zavareh Seyed Moayed Alavian Hamidreza Karimisari Mostafa Shafiei Seyed Yasser Saiedi Hosseini 《Hepatitis monthly》2014,14(8)
Background:
Occult hepatitis C virus infection (OCI) is recognized by finding hepatitis C virus (HCV) RNA in hepatocytes without detectable anti-HCV antibodies and viral RNA in plasma. Autoimmune hepatitis (AIH) is a chronic and generally progressive disease without exactly-identified etiology.Objectives:
This study aimed to determine the prevalence of OCI among patients with AIH and to evaluate the tests used to rule out HCV infection in diagnosing AIH.Patients and Methods:
Between July 2012 to February 2013, 35 Iranian patients with AIH who attended Tehran Hepatitis Center were investigated. For identifying OCI, detection of HCV RNA in both ultracentrifuged serum samples and peripheral blood mononuclear cells (PBMCs) was used. Data analysis was performed using SPSS.Results:
Six males and 29 females with mean disease duration of 77.1 ± 39.5 month and mean age of 43.62 ± 12.67 years were investigated. All cases were negative for anti-HCV antibody and we could not find any HCV RNA in ultracentrifuged serum samples and PBMCs.Conclusions:
With our laboratory diagnostic method, it seems that there are no cases of OCI in patients with AIH. However, we recommend further studies with more samples and more precise laboratory method. 相似文献90.
Hamidreza Abtahi Ahmadreza Okhovvat Somaiie Heidari Azar Gharagazarloo Motahare Mirdamadi Mohammad Hossein Nilforoush Hossein Ghazavi 《American journal of otolaryngology》2018,39(2):94-96