1979-1984 Bayer (India) und ICI (India)

1995 National Institute for Resource and Environment (NIRE), Tsukuba, Japan

1996 Europian Commission: MArine Science and Technology (MAST)

1996 BMBF (German Minsitry for Education and Research) - German/Japanese Research Initiative

1989-1999 Regular consultant for International Scientific Publishers such as. American Chemical Society (USA), Elsevier (Netherlands), Springer (Germany)-Peer Review