Feb 28 (Reuters) - Alexium International Group Ltd AJX.AX
* Appointed Dirk Van Hyning, ph.d. As chief executive officer
* Dirk Van Hynin replaces Nicholas Clark, who remains on board
* Nicholas Clark, who remains on board and assumes new role of executive director strategy reporting to chairman Source text for Eikon: ID:nASX8D1hCC Further company coverage: AJX.AX