What does QSU stand for?

What does QSU mean?

QSU	Quality Systems Update Miscellaneous » Unclassified
QSU	Shall I send or reply on this frequency? Academic & Science » Amateur Radio
QSU	Australian Services Union Queensland Business » General
QSU	Queer and Straight in Unity
QSU	Quality and Standards Unit Business » General
QSU	Quality and Standards Unit Governmental » US Government
QSU	Quality Science Universal Business » Firms
QSU	Quality and Standards Unit Governmental » NASA
QSU	Quick Start Unix Computing » Software
QSU	Quality Systems Update Newsletter Community » Media