Since the introduction of synthetic dispersion paints in the mid-1950s, many artists have applied commercial synthetic dispersion varnishes, which were often marketed alongside paints, to ‘protect’ their works. Despite the relative photochemical stability of these coatings; many have deteriorated ...
Ancient DNA (aDNA) has changed the studies of history, enabling us to directly analyze early genetic variation. In recent years, there has been a sharp increase in the amount of collected aDNA and high-profile studies, but insufficient information about timing and geographical origin has limited ...