Data Sources and Citation-Based Metrics
The 5th edition of the Research.com Best Chemistry Scientists in Thailand Ranking is founded upon comprehensive bibliometric data primarily sourced from OpenAlex and CrossRef, supplemented by multiple other reputable data repositories. The citation-based metrics employed in constructing this ranking were extracted on January 12, 2026, ensuring an up-to-date and rigorous dataset. Central to determining each scientist's ranking position is the D-index (Discipline H-index), a refined metric that includes only those publications and citations directly relevant to the specified discipline — in this case, Chemistry. This approach allows for a precise evaluation of a researcher's impact within their specific scientific domain.
Scope of Research and Inclusion Criteria
This ranking reviewed an extensive pool of 279,971 scientist profiles identified from a wide array of bibliometric data sources across all scientific disciplines. From this broad dataset, 31 scientists specializing in Chemistry were specifically analyzed. To qualify for inclusion in the ranking, a scientist’s D-index was required to be at least 40, with the majority of their tier publications situated in the field of Chemistry. Additionally, consideration was given to awards and notable achievements within the Chemistry domain.
The threshold for the D-index utilized to identify top researchers is dynamically set in increments of 10, calibrated according to the estimated total number of scholars within each discipline. This method ensures the inclusion of the top 1% of leading scholars. Furthermore, qualified scientists exhibit a proximity of 30% or less between their general H-index and their D-index, reflecting a strong disciplinary focus in their research output.
Verification Practices and Methodological Rigor
The research team behind this ranking acknowledges that raw bibliometric data alone cannot fully represent the breadth and quality of a scholar’s academic contributions. Accordingly, all scientist profiles underwent manual verification and cross-correlation against publications documented in a broad spectrum of trusted academic sources. While the total number of papers published in prestigious journals and conference proceedings does not influence the ranking position, it serves as a valuable secondary indicator of each scientist’s scholarly impact.
The ranking position itself is firmly based on each researcher’s D-index, computed from data provided by OpenAlex and CrossRef—the premier bibliometric databases widely recognized and utilized within the global research community. For comprehensive details on the methodology underpinning this ranking, readers are encouraged to visit our methodology page.
Research.com’s Mission and Vision
Research.com is committed to fostering deeper insights into the trajectory of scientific expertise worldwide. Our mission is to inspire researchers, corporations, and policymakers to understand where leading experts are focusing their efforts and to provide the international scientific community with transparent and authoritative portraits of top researchers. By spotlighting outstanding individuals in specific disciplines, countries, and institutions, we aspire to facilitate collaboration, resource allocation, and informed decision-making across the academic and scientific ecosystems.
