The aim of this study was to evaluate the reproducibility of the gray values and noise of a direct digital radiography system (Visualix eHD) for various exposure times and analyzed regions. To obtain radiographic images in a standardized manner, the digital sensor of the system and a stepwedge were positioned in a phantom at a focus-film distance of 30 cm in a dental device at 70 kV, 7 mA and 2...

AIMS This study aimed at testing whether drinking volume and episodic heavy drinking (EHD) frequency in Germany are polarizing between consumption levels over time. Polarization is defined as a reduction in alcohol use among the majority of the population, while a subpopulation with a high intake level maintains or increases its drinking or its EHD frequency. The polarization hypothesis was tes...

Owing to the increasing interest in the nonvolatile memory devices, resistive switching based on hybrid nanocomposite of a 2D material, molybdenum disulphide (MoS2) and polyvinyl alcohol (PVA) is explored in this work. As a proof of concept, we have demonstrated the fabrication of a memory device with the configuration of PET/Ag/MoS2-PVA/Ag via an all printed, hybrid, and state of the art fabri...

Metal halide perovskite quantum dots (PQDs) are widely used in the display field due to their excellent photoelectric properties, such as ultra-narrow half-peak widths and ultra-pure luminescence color purity. Inkjet printing, laser direct writing electrospinning all common methods for PQDs printing prepare micropattern displays. In order produce large-scale high-resolution micropatterns, elect...

To investigate the drying characteristics and mechanism during electrohydrodynamic (EHD) with ultrasonic pretreatment, pretreatment-assisted EHD method at different power values was used to carry out experiment of potatoes. this study, potato slices were pretreated (150, 180, 210, 240, 270 W) or without ultrasound for 30 min 30°C. The corresponding voltage 18 kV drying. moisture ratio, rate, co...

Electrohydrodynamic drying (EHDD) is an energy-efficient and non-thermal technique for dehydrating heat-sensitive biological materials, like fruits, vegetables, or medicinal plants. Although this method has been studied more than three decades, still little known about the relative contribution of different dehydration mechanisms in EHDD. An accurate understanding impact EHD-driven mass transfe...