Green Day's long-awaited South African debut on Jan. 19 was anything but ordinary. By Jessica Lynch Green Day delivered a politically charged performance during their Jan. 19 concert at ...

CALCIUM carbonate can exist in three polymorphic forms, which in the order of their usual stabilities are calcite, aragonite and vaterite. Calcite is the most stable and the least soluble ...

Note : Support and Resistance level for the month, calculated based on price range of the previous trading month.

Upgrading biogas to valuable solid carbon can potentially lead to negative CO 2 emissions with long-term carbon storage but faces substantial thermodynamic and kinetic limits using a single reactor.