Abstract: In this paper the resulting equation for natural vibration of buildings with coupled shear walls is proved to be the forth-order Sturm–Liouville differential equation, and a hand method for determining the first two periods ...

Abstract: To solve the problems with disposing of sludge and mine tailings, calcium fluoride sludge (CFS) was tested as a component for producing ceramics made by using serpentine tailing waste (STW) and kaolin tailing waste (KTW). ...