Effects of environmental conditions on COVID-19 morbidity as an example of multicausality: a multi-city case study in Italy.

The coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), broke out in December 2019 in Wuhan city, in the Hubei province of China. Since then, it has spread practically all over the world, disrupting many human activities. In temperate climates overwhelming evidence indicates that its incidence increases significantly during the cold season.

Transmittance and Reflectance Effects during Thermal Diffusivity Measurements of GNP Samples with the Flash Method.

Thermal diffusivity of (graphene nano-platelets) is an important thermo-physical property as it is useful to predict the material behavior in many heat transfer applications. samples were pressed at different loads to obtain different densities, and then thermal diffusivity was measured with the flash method. All samples were coated with a thin layer (~1 µm) of colloidal graphite (Aquadag) on both sides to reduce reflectance of their surfaces and consequently increase the emissivity.