Z.A. Zainal

8.1k total citations · 3 hit papers
129 papers, 6.4k citations indexed

About

Z.A. Zainal is a scholar working on Biomedical Engineering, Mechanical Engineering and Computational Mechanics. According to data from OpenAlex, Z.A. Zainal has authored 129 papers receiving a total of 6.4k indexed citations (citations by other indexed papers that have themselves been cited), including 85 papers in Biomedical Engineering, 53 papers in Mechanical Engineering and 46 papers in Computational Mechanics. Recurrent topics in Z.A. Zainal's work include Thermochemical Biomass Conversion Processes (56 papers), Biodiesel Production and Applications (34 papers) and Advanced Combustion Engine Technologies (28 papers). Z.A. Zainal is often cited by papers focused on Thermochemical Biomass Conversion Processes (56 papers), Biodiesel Production and Applications (34 papers) and Advanced Combustion Engine Technologies (28 papers). Z.A. Zainal collaborates with scholars based in Malaysia, Indonesia and India. Z.A. Zainal's co-authors include Pooya Lahijani, Samsudin Anis, Abdul Rahman Mohamed, K.N. Seetharamu, Maedeh Mohammadi, K.A. Al-attab, Irfan Anjum Badruddin, Rashid Ali, Zia Ud Din and P. A. Aswatha Narayana and has published in prestigious journals such as SHILAP Revista de lepidopterología, Renewable and Sustainable Energy Reviews and Bioresource Technology.

In The Last Decade

Z.A. Zainal

126 papers receiving 6.1k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Tar reduction in biomass producer gas via mechanical, catalytic and thermal methods: A review

2011 664 citations Samsudin Anis, Z.A. Zainal Renewable and Sustainable Energy Reviews profile →
Prediction of performance of a downdraft gasifier using equilibrium modeling for different biomass materials

2001 643 citations Z.A. Zainal et al. profile →
Conversion of the greenhouse gas CO2 to the fuel gas CO via the Boudouard reaction: A review

2014 396 citations Pooya Lahijani, Z.A. Zainal et al. Renewable and Sustainable Energy Reviews profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Z.A. Zainal Malaysia	38	4.5k	2.3k	1.5k	944	835	129	6.4k
E. Kakaras Greece	51	4.1k 0.9×	3.0k 1.3×	1.5k 1.0×	1.3k 1.4×	758 0.9×	154	7.7k
Qingang Xiong China	48	3.4k 0.7×	2.3k 1.0×	2.0k 1.3×	737 0.8×	227 0.3×	155	5.8k
Hermann Hofbauer Austria	58	8.7k 1.9×	4.8k 2.1×	2.1k 1.5×	2.2k 2.3×	2.4k 2.9×	291	10.7k
Alberto Gómez‐Barea Spain	38	3.9k 0.9×	1.4k 0.6×	1.0k 0.7×	683 0.7×	474 0.6×	98	4.7k
Ashwani K. Gupta United States	52	5.0k 1.1×	1.4k 0.6×	4.4k 3.0×	1.1k 1.2×	638 0.8×	398	9.7k
Mazlan Abdul Wahid Malaysia	36	2.0k 0.4×	2.6k 1.1×	1.5k 1.0×	1.3k 1.3×	548 0.7×	228	7.4k
Shaharin Anwar Sulaıman Malaysia	34	2.5k 0.5×	596 0.3×	423 0.3×	389 0.4×	359 0.4×	260	4.4k
Isam Janajreh United Arab Emirates	34	1.6k 0.4×	966 0.4×	574 0.4×	425 0.5×	260 0.3×	204	3.9k
Panagiotis Grammelis Greece	39	2.7k 0.6×	1.4k 0.6×	1.1k 0.7×	662 0.7×	162 0.2×	168	4.7k
Mohand Tazerout France	40	2.6k 0.6×	1.0k 0.4×	870 0.6×	622 0.7×	106 0.1×	160	4.2k

Countries citing papers authored by Z.A. Zainal

Since Specialization

Citations

This map shows the geographic impact of Z.A. Zainal's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Z.A. Zainal with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Z.A. Zainal more than expected).

Fields of papers citing papers by Z.A. Zainal

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Z.A. Zainal. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Z.A. Zainal. The network helps show where Z.A. Zainal may publish in the future.

Co-authorship network of co-authors of Z.A. Zainal

This figure shows the co-authorship network connecting the top 25 collaborators of Z.A. Zainal. A scholar is included among the top collaborators of Z.A. Zainal based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Z.A. Zainal. Z.A. Zainal is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Al-attab, K.A., et al.. (2025). Combustion and emission characteristics of pre-heated palm vegetable oil and its blends in a new micro gas turbine combustion chamber. Applied Thermal Engineering. 263. 125435–125435. 3 indexed citations

Idroas, Mohamad Yusof, et al.. (2020). Numerical Investigation of the Effect of Incorporated Guide Vane Length with SCC Piston for High-Viscosity Fuel Applications. Processes. 8(11). 1328–1328. 2 indexed citations

Idroas, Mohamad Yusof, et al.. (2020). Numerical Investigation of Fluid Flow and In-Cylinder Air Flow Characteristics for Higher Viscosity Fuel Applications. Processes. 8(4). 439–439. 9 indexed citations

Anis, Samsudin, et al.. (2018). EFFECT OF BIODIESEL/DIESEL BLEND AND TEMPERATURE ON 1-CYLINDER DIESEL FUEL INJECTION PUMP PERFORMANCE AND SPRAY PATTERN. SHILAP Revista de lepidopterología. 7(2). 121–127. 2 indexed citations

Al-attab, K.A., et al.. (2018). Swirl flow field analysis of producer gas premixed charge in a flameless cyclone combustor. International Journal of Energy Research. 42(14). 4360–4371. 11 indexed citations

Zainal, Z.A., et al.. (2016). Performance and chemical composition of waste palm cooking oil as scrubbing medium for tar removal from biomass producer gas. Journal of Natural Gas Science and Engineering. 32. 256–261. 23 indexed citations

Lahijani, Pooya, Maedeh Mohammadi, Z.A. Zainal, & Abdul Rahman Mohamed. (2015). Advances in CO 2 gasification reactivity of biomass char through utilization of radio frequency irradiation. Energy. 93. 976–983. 18 indexed citations

Zainal, Z.A., et al.. (2015). Experimental study and characterization of a two-compartment cylindrical internally circulating fluidized bed gasifier. Biomass and Bioenergy. 77. 147–154. 22 indexed citations

Al-attab, K.A. & Z.A. Zainal. (2014). Performance of a biomass fueled two-stage micro gas turbine (MGT) system with hot air production heat recovery unit. Applied Thermal Engineering. 70(1). 61–70. 30 indexed citations

10.

Ramasamy, D., et al.. (2014). Validation of Road Load Characteristic of a Sub-Compact Vehicle by Engine Operation. International Journal of Automotive and Mechanical Engineering. 9. 1820–1831. 16 indexed citations

11.

Lahijani, Pooya, Z.A. Zainal, Maedeh Mohammadi, & Abdul Rahman Mohamed. (2014). Conversion of the greenhouse gas CO2 to the fuel gas CO via the Boudouard reaction: A review. Renewable and Sustainable Energy Reviews. 41. 615–632. 396 indexed citations breakdown →

12.

Mohammadi, Maedeh, Pooya Lahijani, Z.A. Zainal, & Abdul Rahman Mohamed. (2013). Capture of carbon dioxide from flue/fuel gas using dolomite under microwave irradiation. Chemical Engineering Journal. 240. 169–178. 15 indexed citations

13.

Hassan, Saima, et al.. (2011). The Effects of Supercharging on the Performance and Exhaust Gas Emissions of a Dual-Fuel Engine Fueled with Producer Gas-Diesel and Palm Oil Blends. Middle East journal of scientific research. 7(2). 162–169. 4 indexed citations

14.

Zainal, Z.A., et al.. (2011). Experimental Study of Hydrodynamic Characteristics and CO ₂ Absorption in Producer Gas Using CaO-sand Mixture in a Bubbling Fluidized Bed Reactor. International Journal of Chemical Reactor Engineering. 9(1). 1 indexed citations

15.

Lahijani, Pooya & Z.A. Zainal. (2010). Gasification of palm empty fruit bunch in a bubbling fluidized bed: A performance and agglomeration study. Bioresource Technology. 102(2). 2068–2076. 217 indexed citations

16.

Zainal, Z.A., et al.. (2009). LABORATORY-SCALE PYROLYSIS OF OIL PALM PRESSED FRUIT FIBRES. Journal of Oil Palm Research. 21. 577–587. 18 indexed citations

17.

Lim, K.O., et al.. (2009). Small Industrial Scale Pyrolysis of Oil Palm Shells and Characterizations of their Products. International Energy Journal. 9(4). 5 indexed citations

18.

Zainal, Z.A., et al.. (2009). Design, Fabrication and Testing of a Swirl Burner for Alpha V-Shaped Stirling Engine. Asian Journal of Applied Sciences. 2(6). 475–485. 2 indexed citations

19.

Zainal, Z.A., et al.. (2008). HEAT TRANSFER ANALYSIS OF POROUS MEDIUM IN A CONICAL CYLINDER WITH VARIABLE WALL TEMPERATURE. International Journal of Mechanical and Materials Engineering. 3(2). 145–152. 28 indexed citations

20.

Lim, K.O., Z.A. Zainal, G.A. Quadir, & M.Z. Abdullah. (2007). Plant Based Energy Potential and Biomass Utilization in Malaysia. International Energy Journal. 1(2). 6 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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