- 23 1990 Ogos 27-30.
Pameran Penyelidikan UKM Sempena Ulang Tahun Ke-20. Dewan Canselor Tun Abdul Razak (DECTAR), UKM: Item-item pameran: (1) Mat Zakaria, Arisol Alimuniar, Md. Pauzi Abdullah, Rusli Abd Ghani, Mohd Ambar Yarmo, Mohd Jamil Jais & Wan Saime Wan Ngah, Kitosan Daripada Sisa Perikanan Untuk Perawatan air dan Efluen Domestik, (2) Mohd. Ambar Yarmo, Arisol Alimuniar, Rusli Abd Ghani, Nik Idris Nik Yusoff, Mat Zakaria, Mohd Zaki Abdul Rahman, Nor Asikin Mohd Nordin, Normala Abdul Rahman, Rusuan Abdul Rahman, Khomah Ismail, Alias Muda, Rozita Osman, Man Ghani, Abd Rahman Sulaiman, Yusof Itam & Mohd Nor Ibrahim. Pengeksploitasian Tindak Balas Metatesis Terhadap Sumber Semula Jadi Negara.
[UKM Research Exhibition on the 20th Anniversary. DECTAR, UKM: Exhibition items: (1) Mat Zakaria, Arisol Alimuniar, Md. Pauzi Abdullah, Rusli Abd Ghani, Mohd Ambar Yarmo, Mohd Jamil Jais & Wan Saime Wan Ngah: (trl) Chitosan from Fishery Waste for Treatment of Water andDomestic Effluent. (2) Mohd. Ambar Yarmo, Arisol Alimuniar, Rusli Abd Ghani, Nik Idris Nik Yusoff, Mat Zakaria, Mohd Zaki Abdul Rahman, Nor Asikin Mohd Nordin, Normala Abdul Rahman, Rusuan Abdul Rahman, Khomah Ismail, Alias Muda, Rozita Osman, Man Ghani, Abd Rahman Sulaiman, Yusof Itam & Mohd Nor Ibrahim. (trl) Exploitation of Metathetic Reactions on the National Natural Resources.]
- oo 1990 Ogos 20-25.
Third Training Course on Operation and Maintenance of Waste Water Treatment Plants. Universiti Pertanian Malaysia (UPM): Department of Environmental Science, UPM, Department of Environment (DOE), Ministry of Science, Technology and Environment, and Ministry of Housing and Local Government, Malaysia.
- 22 1990 Ogos 20-26.
Mindex '90 - Pameran Reka Cipta dan Reka Bentuk Malaysia. PWTC, Kuala Lumpur: Kementerian Sains, Teknologi dan Alam Sekitar, Malaysia. Item pameran: Mat Zakaria, Arisol Alimuniar, Md. Pauzi Abdullah, Rusli Abd Ghani, Mohd Ambar Yarmo, Mohd Jamil Jais & Wan Saime Wan Ngah: Model Perawatan Air dan Efluen Industri yang Menggunakan Kitosan daripada Sisa Industri Perikanan.
[Mindex '90 - Malaysian Invention and Design Exhibition. PWTC, Kuala Lumpur: Ministry of Science, Technology and Environment. Exhibition item: Mat Zakaria, Arisol Alimuniar, Md. Pauzi Abdullah, Rusli Abd Ghani, Mohd Ambar Yarmo, Mohd Jamil Jais & Wan Saime Wan Ngah. (trl) Model for Treatment of Water and Industrial Effluent Using Chitosan from Fishery Industrial Waste.]
- 21 1990 Jul 7-16.
Bengkel Pembinaan Bahan Kurikulum untuk Kurikulum Bersepadu Sekolah Menengah. Pusat Perkembangan Kurikulum, Kuala Lumpur: Biro Buku Teks dan Pusat Perkembangan Kurukulum, Kementerian Pendidikan Malaysia. Perserta.
[Workshop on Curriculum Materials Development of the Integrated Curriculum for Secondary School. Curriculum Development Centre: Kuala Lumpur: Textbook Bureau and Curriculum Development Centre, Ministry of Education Malaysia. Participant.]
- 20 1990 Mei 14-16.
Bengkel Kursus Matrikulasi Sains Ke-IX. Universiti Kebangsaan Malaysia: Pusat Matrikulasi dan Canselori Universiti Kebangsaan Malaysia. Ahli panel bengkel matapelajaran kimia.
[9th Workshop on Matriculation Science Courses. UKM Bangi: UKM Matriculation Centre and UKM Chancellory. A panel of chemistry workshop.]
