The problem of the appearance of the sliding effect in the wheel-road contact in railway transport is considered.It is known that the sliding effect accompanying the rolling process of the wheel is explained by two fundamentally different processes: sliding caused by the loss of traction of the wheel to the road surface and, so-called, deformation
TikTok is one of the results of advances in the world of technology that can make it easier for someone to do anything online.It is not surprising that most people today use various social media to disseminate the information they get, both in groups and individually.The purpose of the study is to get an overview of the feelings of insecurity among
Objective: To perform a systematic review and multiple-treatment meta-analysis for the treatment of premature infants with post-hemorrhagic ventricular dilatation (PHVD), to prevent death or long-term neuro-disability.Design/Method: A systematic review was performed using PubMed, EMBASE, and the Cochrane Library.A free-word search was performed to
Helium nanodroplets irradiated by MagFit+ intense near-infrared laser pulses ignite and form highly ionized nanoplasmas even at laser intensities where helium is not directly ionized by the optical field, provided the droplets contain a few dopant atoms.We present a combined theoretical and experimental study of the He nanoplasma ignition dynamics