After the power failure, we had to restore the database from backup.

The metallurgical and economic indices subsystem is intended for operative presentation (at the shift and day end) of sumtotal indices of teams, sections and plants operation, as well as that of the concentrator as a whole, to the plants and concentrator management.

Otherwise, this approach will be valid subject to the previous rotation of the axes according to Euler's Rotation Theorem.

PHS can be converted to PHC followed by a mechanism similar to that between DHS and DHC, but the reverse reaction is catalyzed by the specific enzyme phytoceramidase.