Hiroyuki Nigami

45 papers and 670 indexed citations i.

About

Hiroyuki Nigami is a scholar working on Epidemiology, Pulmonary and Respiratory Medicine and Hematology. According to data from OpenAlex, Hiroyuki Nigami has authored 45 papers receiving a total of 670 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Epidemiology, 10 papers in Pulmonary and Respiratory Medicine and 9 papers in Hematology. Recurrent topics in Hiroyuki Nigami’s work include Pneumonia and Respiratory Infections (5 papers), Platelet Disorders and Treatments (5 papers) and Infectious Encephalopathies and Encephalitis (4 papers). Hiroyuki Nigami is often cited by papers focused on Pneumonia and Respiratory Infections (5 papers), Platelet Disorders and Treatments (5 papers) and Infectious Encephalopathies and Encephalitis (4 papers). Hiroyuki Nigami collaborates with scholars based in Japan and United States. Hiroyuki Nigami's co-authors include Kousaku Matsubara, Takashi Fukaya, Takayuki Tanaka, Akihiro Tamura, Aya Iwata, Kunizo Baba, Haruo Hattori, Yoshihisa Higuchi, K. Baba and Takahiro Hayakawa and has published in prestigious journals such as The Journal of Infectious Diseases, European Journal of Pharmacology and British Journal of Haematology.

In The Last Decade

Co-authorship network of co-authors of Hiroyuki Nigami i

Fields of papers citing papers by Hiroyuki Nigami

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hiroyuki Nigami. 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 Hiroyuki Nigami. The network helps show where Hiroyuki Nigami may publish in the future.

Countries citing papers authored by Hiroyuki Nigami

Since Specialization
Citations

This map shows the geographic impact of Hiroyuki Nigami'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 Hiroyuki Nigami with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hiroyuki Nigami more than expected).

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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2025