| Tar reduction in biomass producer gas via mechanical, catalytic and thermal methods: A review S Anis, ZA Zainal Renewable and sustainable energy reviews 15 (5), 2355-2377, 2011 | 1008 | 2011 |
| Prediction of performance of a downdraft gasifier using equilibrium modeling for different biomass materials ZA Zainal, R Ali, CH Lean, KN Seetharamu Energy conversion and management 42 (12), 1499-1515, 2001 | 986 | 2001 |
| Experimental investigation of a downdraft biomass gasifier ZA Zainal, A Rifau, GA Quadir, KN Seetharamu Biomass and bioenergy 23 (4), 283-289, 2002 | 548 | 2002 |
| Conversion of the greenhouse gas CO2 to the fuel gas CO via the Boudouard reaction: A review P Lahijani, ZA Zainal, M Mohammadi, AR Mohamed Renewable and Sustainable Energy Reviews 41, 615-632, 2015 | 433 | 2015 |
| Gasification of palm empty fruit bunch in a bubbling fluidized bed: a performance and agglomeration study P Lahijani, ZA Zainal Bioresource technology 102 (2), 2068-2076, 2011 | 321 | 2011 |
| CO2 gasification reactivity of biomass char: catalytic influence of alkali, alkaline earth and transition metal salts P Lahijani, ZA Zainal, AR Mohamed, M Mohammadi Bioresource technology 144, 288-295, 2013 | 282 | 2013 |
| Biomass integrated gasification–SOFC systems: Technology overview ZU Din, ZA Zainal Renewable and Sustainable Energy Reviews 53, 1356-1376, 2016 | 258 | 2016 |
| Spray and combustion characterization for internal combustion engines using optical measuring techniques–A review SN Soid, ZA Zainal Energy 36 (2), 724-741, 2011 | 237 | 2011 |
| Oil palm biomass as potential substitution raw materials for commercial biomass briquettes production. AB Nasrin, AN Ma, YM Choo, S Mohamad, MH Rohaya, A Azali, Z Zainal | 216 | 2008 |
| Analysis of biomass-residue-based cogeneration system in palm oil mills Z Husain, ZA Zainal, MZ Abdullah Biomass and Bioenergy 24 (2), 117-124, 2003 | 196 | 2003 |
| Performance and emissions of straight vegetable oils and its blends as a fuel in diesel engine: A review SC Mat, MY Idroas, MF Hamid, ZA Zainal Renewable and Sustainable Energy Reviews 82, 808-823, 2018 | 185 | 2018 |
| Numerical analysis of convection conduction and radiation using a non-equilibrium model in a square porous cavity IA Badruddin, ZA Zainal, PAA Narayana, KN Seetharamu International journal of thermal sciences 46 (1), 20-29, 2007 | 182 | 2007 |
| Externally fired gas turbine technology: A review KA Al-Attab, ZA Zainal Applied Energy 138, 474-487, 2015 | 167 | 2015 |
| Effect of viscous dissipation and radiation on natural convection in a porous medium embedded within vertical annulus IA Badruddin, ZA Zainal, ZA Khan, Z Mallick International journal of thermal sciences 46 (3), 221-227, 2007 | 162 | 2007 |
| Thermal non-equilibrium modeling of heat transfer through vertical annulus embedded with porous medium IA Badruddin, ZA Zainal, PAA Narayana, KN Seetharamu International journal of heat and mass transfer 49 (25-26), 4955-4965, 2006 | 156 | 2006 |
| Heat transfer in porous cavity under the influence of radiation and viscous dissipation IA Badruddin, ZA Zainal, PAA Narayana, KN Seetharamu International Communications in Heat and Mass Transfer 33 (4), 491-499, 2006 | 151 | 2006 |
| Study of mixed convection in an annular vertical cylinder filled with saturated porous medium, using thermal non-equilibrium model NJS Ahmed, IA Badruddin, J Kanesan, ZA Zainal, KSN Ahamed International Journal of Heat and Mass Transfer 54 (17-18), 3822-3825, 2011 | 141 | 2011 |
| Heat transfer by radiation and natural convection through a vertical annulus embedded in porous medium IA Badruddin, ZA Zainal, PAA Narayana, KN Seetharamu International Communications in Heat and Mass Transfer 33 (4), 500-507, 2006 | 132 | 2006 |
| Heat transfer in a conical cylinder with porous medium NJS Ahmed, IA Badruddin, ZA Zainal, HMT Khaleed, J Kanesan International Journal of Heat and Mass Transfer 52 (13-14), 3070-3078, 2009 | 126 | 2009 |
| Free convection and radiation for a vertical wall with varying temperature embedded in a porous medium IA Badruddin, ZA Zainal, PAA Narayana, KN Seetharamu, LW Siew International journal of thermal sciences 45 (5), 487-493, 2006 | 121 | 2006 |