1. calculation of the cracking rate in armour materials of the tanks of the Laboratoire Central de l’Armement Arcueil –1974 – FRANCE
2.extrapolation of the calculation of a linear motor at the launch of C.E.L. Vanves France rockets – 1975 .
3. studies and exploitation of tropical medicinal plants 1977 – 1992
POSITIONS PREVIOUSLY HELD
- Chargé d’études at the National Office of Scientific and Technical Research (ONAREST) Yaoundé – Cameroon.
- Deputy Director of Monitoring at the General Delegation for Scientific and Technical Research (DGRST) Yaoundé – Cameroon
- Temporary lecturer at the Ecole Nationale Supérieure Polytechnique Yaoundé – Cameroon
- Senior Expert at the Department of Scientific and Technical Research at UDEAC in Bangui, A.C.R.
- Temporary lecturer at the Faculty of Science, University of Bangui, CAR
Done at Yaoundé, 17 June 2000