The grim milestone of three million deaths due to the global pandemic of coronavirus disease 2019 (COVID-19) caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was reached a few weeks ago.COVID-19 is a multi-system all-pervasive disease with protean manifestations, and its major signs and symptoms, such as the incessant dry

Lunar/planetary spacecraft should be able to land softly and conduct thorough explorations.Conventional landing methods suffer from various problems such as high rebound, the impossibility of reuse, and necessity of air.Therefore, a novel landing method that solves these problems is required for black knight darts landing in severe environments.Tow

Abstract Heart shape captures variation in cardiac structure beyond traditional phenotypes of mass and volume.Although observational studies have demonstrated associations with cardiometabolic risk factors and diseases, its genetic basis is less understood.We utilised cardiovascular magnetic resonance images from 45,683 UK Biobank participants to c

Public health and safety are increasingly ceiling fan with 18 inch downrod concerned as public awareness of health-related issues grows.To find a rapid, convenient, and non-destructive testing method for detecting human nutritional toxicology detection, this study selects sildenafil, phenolphthalein, and metformin hydrochloride—commonly foun

The vibration of flexible structures in spacecraft, such as large space deployable reflectors, solar panels and large antenna structure, has a great impact on the normal operation of spacecraft.Accurate vibration control is necessary, and the control of angular displacement is a difficulty of accurate control.In the traditional control method, the