Another site investigated by university scientists is Chan-Chan a site that gives name to the Archaic Chan-Chan Complex.[9] Dairy technology and science: The university's Centro Tecnológico de la Leche (lit. Milk Technology Centre) have been credited by scholar Paulina Rytkönen for being behind the higher dairy productivity in Los Ríos Region when compared with adjacent Los Lagos Region.[10] Dendrochronology: Scientists at the Dendrochronology Laboratory of UACh has set up the longest dendrochronology in the Southern Hemisphere going back 5666 years. Researchers have also reconstructed the temperatures of the last 3622 years with tree rings from Fitzroya and have used a dendrochronology network of Lenga Beech, spanning from Talca to Navarino Island, to investigate global warming in the recent decades.[11] Mapudungun language: UACh is one of the main sites of Mapudungun linguistic studies and teaching.