| Dr | Varma | Rambaran | The University of Trinidad and Tobago | Trinidad and Tobago | |
| Dr | M.T. | Ramesan | University of Calicut | India | |
| Prof Dr | Rengan | Ramesh | Bharathidasan University | India | |
| Mr | Di | Ran | Shenyang Urban Construction University | China | |
| Prof Dr | K Yamuna | Rani | CSIR-Indian Institute of Chemical Technology | India | |
| Prof | Luay | Rashan | Dhofar University | Oman | |
| Prof | Alimorad | Rashidi | Research Institute of petreolum Industry | Iran | |
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| Prof Dr | ELENA | REIGADAS | hOSPITAL GREGORIO MARAÑÓN Y FACULTAD MEDICINA UNIVERSIDAD COMPLUTENSE | Spain | |
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| Prof Dr | Bo | Ren | Zhejiang University of Technology | China | |
| Dr | Wenju | Ren | Chongqing University of Posts and Telecommunications | China | |
| Prof Dr | Adel | Rezk | Department of Agricultural Biotechnology, College of Agricultural and Food Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia | Saudi Arabia | |
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