In information technology, individual items of data are sometimes aggregated into a database. Unlike marshalling, aggregation doesn't require giving one thing precedence over another thing. The noun has special meanings in geology and in building construction.
At the time of early colonial settlement, Barangaroo-a powerful Cammeraygal woman-was a key figure in local Aboriginal culture and community. She was also the wife of Bennelong, after whom Bennelong Point-the site of the Sydney Opera House-was named.
Barium was identified as a new element in 1774, but not reduced to a metal until 1808 with the advent of electrolysis. Barium has only a few industrial applications. The metal has been historically used as a getter for vacuum tubes.It is a component of YBCO (high-temperature superconductors) and electroceramics, and is added to steel and cast iron to reduce the size of carbon grains within the microstructure of the metal.arium has only a few industrial applications. The metal has been historically used as a getter for vacuum tubes. It is a component of YBCO (high-temperature superconductors) and electroceramics, and is added to steel and cast iron to reduce the size of carbon grains within the microstructure of the metal.