ACOUSTIC PROPERTIES OF ALUMINIUM FOAMS

The article discusses normal incidence sound absorption by aluminium foam manufactured with powder metallurgy technology.Aluminium foams with different surface morphologies were obtained by varying the type white feather tinsel of precursor and adding filler materials during the foaming process.The sound absorption coefficients found for these alum

BackgroundThe COVID-19 pandemic brought on a range of stressors in homes and workplaces.With no sign of ending after one year, burnout was a concern.Resilience has been known to shield against the effects of curlimal hedgehog stress.While often thought of as an individual trait, previous studies have shown social support to improve resilience.The s