Data breakdown due to fluctuation of an operation power source is suppressed by suppressing a sub-threshold leakage current. In a second aspect, the invention discloses a shelf-stable acidic setting cement powder comprising:\u2014 a calcium phosphate based powder, and a powdered compound which, upon addition of water to form a cement paste, retards the cement setting reaction or increases the zeta potential of the resultant suspended particles to at least \u221230 mV. A sound characteristic of a communication channel for providing communication between the vehicle unit and the server requires to be adjusted so that the server properly recognizes the voice signal. Upon input of the requested number, a signal will be sent through to the phone to ring the phone and connect the caller upon a user answering the phone. In addition, pharmaceutical compositions thereof, methods for preparing and methods for using this compound or composition for treating a variety of diseases, including cancer and inflammation are also provided.