Objective Small numbered turnouts are widely used in urban rail transit, especially in metro depots, but their large switch angles pose a derailment risk when vehicles pass through them.It is necessary to investigate the reasons for vehicle derailment at the turnout frog positions in metro depot.Method A step-by-step approach is Clay Powder taken t
In this study, we conducted a combined examination of the photometric and colorimetric performances of trichromatic light sources, which are synthesized by three kinds of light-source units, by transferring their photometric performance to chromaticity diagrams.Contour maps of three photometric performances, which are within a triangle gamut-area f
Distributed acoustic sensing (DAS) is an emerging technology for recording vibration signals via the optical fibers buried in subsurface conduits.Its relatively easy-to-deploy and high spatial and temporal sampling characteristics make DAS an appealing tool to record seismic wavefields at higher quantity and quality than traditional geophones.Consi
Heart rate variability (HRV) is regularly assessed in neuroimaging studies as an indicator of autonomic, emotional or cognitive processes.In this study, we investigated the influence of a loud and cramped environment during magnetic resonance imaging (MRI) on resting HRV measures.We compared recordings during functional MRI sessions with recordings