The bronze casting stone moulds discovered in Xinjiang, mainly for tools and weapons, are mostly dated to the Bronze Age and this is the result of the eastward spread of the bronze culture springing up very early from the west of Eurasian Steppe.

Kinetics of methane hydrate formation in mixture of ice powders and sand;

Study on technologic condition of sand in immobilized biological activated carbon purification technology;

Study on function correlation between long-fiber filtering and sand filtering;

Improvement of quartz sand filtration of polluted NHD solution;

Improvement of quartz sand filtration process for vinegar treatment;

Study on surface modification of quartz sand with iron oxide;