Subsequently his portfolio was reduced .
He served as Minister of State for Higher Education and Scientific Research from 27 March 1984 until January 1990 , when he was replaced in the wake of student unrest at Omar Bongo University .
Subsequently his portfolio was reduced and he served as Minister of State for Higher Education and Scientific Research from 27 March 1984 until January 1990 , when he was replaced in the wake of student unrest at Omar Bongo University .