Obmenennaya, Alexandra, A.N. Kosygin Russian State University (Technology. Design. Art)
Odzhaqverdiyeva, S.Y.
Ogbodo, C.V., Federal University of Agriculture, Makurdi, Nigeria 
Ogbodo, J. O., Benue State Polytechnic, Ugbokolo, Benue State
Ogbuagu, Dr. Dike Henry, Federal University of Technology, PMB 1526, Owerri
Ogunfowokan, Aderemi Okunola, Obafemi Awolowo University, Ile-Ife
Ogunsile, B. O., Department of Chemistry, University of Ibadan, Ibadan, Nigeria
Ojah, Emmanuel Onah
Okamura, Daniel, Department of Chemistry, Federal University of Lavras (UFLA), Lavras – MG
Okere M, Chijioke, Federal University of Technology, Owerri
Okoro, Linus N., American University of Nigeria, Yola, Adamawa State
Okwu, G.N., Federal University of Technology, Owerri
Olabanji, Iyabo Oluremi, Department Of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria.
Olabanji, IyaboOluremi, ObafemiAwolowo University, Ile-Ife
Olivier, Perez, Laboratoire CRISMAT, UMR 6508 CNRS, ENSICAEN- 6 Boulevard du Marechal Juin- 14050- Caen- Cedex 4
Oludare H., Adedeji, Federal University of Agriculture, PMB 2240, Abeokuta, Ogun State
Olufunmilayo. O, Olayinka, Federal University of Agriculture, PMB 2240, Abeokuta, Ogun State
Oluyemi, Ayodele Emmanuel, Department Of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria.
Omar, Mahmoud A., Minia University, Minia
Omary, A.S.Al-, Chemistry Department, Faculty of Applied Science, Umm Al-Qura University, Makkah Al-Mukarrama, Saudi Arabia.
Omary, Kh.A.Al, Chemistry Department, Faculty of Applied Science, Umm Al-Qura University, Makkah Al-Mukarrama, Saudi Arabia.
Onyrkwere, Eze Sunday, Abia State University, PMB 2000, Uturu, AbiaState
Oshaghi, Ebrahim Abbasi, Medical School, Hamadan University of Medical Sciences, Hamadan
Osman, Ahmed H., Department of Chemistry, Faculty of Science, Assiut University, Assiut, 71516, Egypt
Osman, Ibrahim, Faculty of science, Al-Azhar University, Nasr City, Cairo, Egypt

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