Prince of Songkla University (PSU) proudly congratulates its researchers who have been ranked among the world’s top 2% of scientists, according to a global database compiled by a research team from Stanford University, USA. The ranking is based on publication records, citation impact, and h-index data extracted from the Scopus database, assessing both career-long citation impact and single-year citation impact.
The study, titled “Updated Science-Wide Author Databases of Standardized Citation Indicators” and published in the PLOS Biology journal, evaluates over 100,000 leading scientists worldwide using multiple standardized metrics, including citations, h-index, co-authorship-adjusted hm-index, and composite c-score indicators. The data was last updated on September 19, 2025, reflecting citation statistics up to the end of 2024, following the Science-Metrix classification system.
Career-Long Citation Impact (Up to 2024)
Out of 230,333 scientists worldwide and 302 Thai researchers, eight PSU academics were recognized for their outstanding lifetime research impact:
1. Prof. Dr. Soottawat Benjakul, Faculty of Agro-Industry – Agriculture, Fisheries & Forestry
2. Asst. Prof. Dr. Raymond James Ritchie, Faculty of Technology and Environment, Phuket Campus – Biology
3. Assoc. Prof. Dr. Anukorn Pruengrongrat, Faculty of Science – Enabling & Strategic Technologies
4. Assoc. Prof. Dr. Thawien Wittaya, Faculty of Agro-Industry – Agriculture, Fisheries & Forestry
5. Assoc. Prof. Dr. Sumetha Suwanboon, Faculty of Science – Enabling & Strategic Technologies
6. Prof. Dr. Benjamas Cheirsilp, Faculty of Agro-Industry – Enabling & Strategic Technologies
7. Prof. Emeritus Dr. Poonsuk Prasertsan, Faculty of Science – Enabling & Strategic Technologies
8. Prof. Emeritus Dr. Vatcharin Rukachaisiriku, Faculty of Science – Chemistry
Single-Year Citation Impact (2024)
Among 236,313 scientists globally and 454 Thai researchers, 18 PSU researchers were included in the 2024 ranking:
1. Prof. Dr. Soottawat Benjakul, Faculty of Agro-Industry – Agriculture, Fisheries & Forestry
2. Asst. Prof. Dr. Raymond James Ritchie, Faculty of Technology and Environment, Phuket Campus – Biology
3. Assoc. Prof. Dr. Anukorn Pruengrongrat, Faculty of Science – Enabling & Strategic Technologies
4. Assoc. Prof. Dr. Matanchai Sutthiphan, Faculty of Management Sciences – Economics & Business
5. Prof. Dr. Benjamas Cheirsilp, Faculty of Agro-Industry – Enabling & Strategic Technologies
6. Asst. Prof. Dr. Itthipon Jeerapan, Faculty of Science – Enabling & Strategic Technologies
7. Asst. Prof. Dr. Thammanoon Prodpran, Faculty of Agro-Industry – Agriculture, Fisheries & Forestry
8. Asst. Prof. Dr. Avtar Singh, Faculty of Agro-Industry – Agriculture, Fisheries & Forestry
9. Assoc. Prof. Dr. Sumetha Suwanboon, Faculty of Science – Enabling & Strategic Technologies
10. Prof. Emeritus Dr. Poonsuk Prasertsan, Faculty of Science – Enabling & Strategic Technologies
11. Prof. Emer. Dr. Spaying Voravuthikunchai, Faculty of Science – Biomedical Research
12. Prof. Dr. Pharkphoom Panichayupakaranant, Faculty of Pharmaceutical Sciences – Chemistry
13. Dr. Teeradej Saenasu, Faculty of Science – Chemistry
14. Assoc. Prof. Dr. Supinya Tiewtrakool, Faculty of Pharmaceutical Sciences – Chemistry
15. Prof. Dr. Teerapol Srichana, Faculty of Pharmaceutical Sciences – Clinical Medicine
16. Prof. Dr. Saowaluck Pongpaichitr, Faculty of Science – Chemistry
17. Assoc. Prof. Dr. Praphaporn Boonmee, Faculty of Pharmaceutical Sciences – Clinical Medicine
18. Prof. Emeritus Dr. Rawee Teanpaisan, Research and Development Office – Clinical Medicine
This achievement highlights PSU’s global research excellence and its researchers’ significant contributions to advancing science and innovation. The university remains committed to fostering impactful research that drives sustainable development and enhances Thailand’s competitiveness on the world stage.