Deep neural networks have received considerable attention in clinical imaging, particularly with respect to the reduction of radiation risk. Lowering dose by reducing photon flux inevitably results degradation scanned image quality. Thus, researchers sought exploit deep convolutional (DCNNs) map low-quality, low-dose images higher-dose, higher-quality images, thereby minimizing associated hazar...

We investigated the relationship between nuclear hits by alpha particles and the subsequent occurrence of sister chromatid exchanges (SCEs) in normal human diploid lung fibroblasts (HFL1). Cells were exposed to 238Pu alpha particles at doses ranging from 0.4-12.9 cGy and subsequently analyzed for SCEs. A significant increase in SCE frequency was observed even at the lowest dose examined. The ex...

Melatonin secretion, occurring at night in both diurnal and nocturnal species, provides an important circadian signal for initiating different types of behavior. In diurnal vertebrates, e.g., humans, macaques, zebrafish, this pineal hormone also has a pronounced acute effect on sleep. This effect on homeostatic sleep regulation is mediated via specific melatonin receptors and has a distinct dos...

Dose delivery (total emitted dose, or TED) from dry powder inhalers (DPIs), pulmonary deposition, and the biological effects depend on drug formulation and device and patient characteristics. The aim of this study was to measure, in vitro, the relationship between parameters of inhalation profiles recorded from patients, the TED and fine particle mass (FPM) of Diskus and Turbuhaler inhalers. In...

Dose delivery (total emitted dose, or TED) from dry powder inhalers (DPIs), pulmonary deposition, and the biological effects depend on drug formulation and device and patient characteristics. The aim of this study was to measure, in vitro, the relationship between parameters of inhalation profiles recorded from patients, the TED and fine particle mass (FPM) of Diskus and Turbuhaler inhalers. In...

background: although extensive development of technology provides welfare and accessibility for families but it may be one of the threatening factors for them. the unique characteristics of internet such as availability and facility are useful, but over using for its exciting content cause to internet addiction between family members. the aim of this study was to explain the experiences of the ...