University of La Serena

The Star Formation History and Evolution of the Ultra-Diffuse M81 Satellite F8D1

Abstract We present deep Hubble Space Telescope (HST) imaging of one of the nearest ultra-diffuse galaxies (UDGs) outside of the Local Group: F8D1, a satellite of M81 known to be tidally disrupting. UDGs are an enigmatic and diverse population, with evolutionary pathways ranging...

Hydrogen-assisted combustion of GQD–DEE-enhanced WCO biodiesel in a dual-fuel CI engine

Abstract The relatively low performance and elevated nitrogen oxide (NOx) emissions associated with biodiesel-fueled compression ignition (CI) engines continue to limit their widespread application. To address these challenges, the present study investigates the combined influenc...

Clinical-histological and genetic features of rare variants of melanoma.

Melanoma is traditionally classified into a limited number of common clinicopathologic subtypes; however, routine clinical and histopathologic practice reveals a broad spectrum of rare variants and unusual morphologic patterns that pose significant diagnostic and therapeutic chal...