Eleven celadons with different degrees of degradation excavated from the Dalian Island shipwreck of the Yuan Dynasty (1271–1368 AD) were selected, and the degradation mechanism of the ancient porcelain at marine environment was investigated. The chemica
to erode down to waist or Modern Cairo extends to the ankle level. foot of the Giza Plateau. For three years we cleared the Digging the dirt modern debris and waste Although we have modern which had covered the site of techniques to help with dating the lost city. Edges of the area ...
Archaeological chemist Marvin Rowe was asked to date a Coptic textile that was contaminated by a mass of debris that turned out to be insect coprolites. Having no other food to munch on but the textile, the inevitable egestion of the waste material became embedded in the artifact. Rowe and ...
gold extraction and processing technologies have evolved. During the Roman Empire period, Emperor Augustus made significant advancements in hydraulic gold mining. He developed the “ground sluicing” method, which used water to wash away the overlying soil and expose the bedrock where gold deposits wer...
Surface water from the Minjiang was consequently available to enhance food production, but if unregulated, it coursed through the plain, in the words of Jones [49], as a “seething torrent, laden with uprooted trees, debris from houses and villages, and drowned animals.” The Dujiangyan ...