This map shows the geographic impact of Koji Nikkuni'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 Koji Nikkuni with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koji Nikkuni more than expected).
This network shows the impact of papers produced by Koji Nikkuni. 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 Koji Nikkuni. The network helps show where Koji Nikkuni may publish in the future.
Co-authorship network of co-authors of Koji Nikkuni
This figure shows the co-authorship network connecting the top 25 collaborators of Koji Nikkuni.
A scholar is included among the top collaborators of Koji Nikkuni 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 Koji Nikkuni. Koji Nikkuni is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Takai, Kazue, Takashi Ushiki, Koji Nikkuni, Hideki Hashidate, & Hiroyuki Shibuya. (2011). [Atypical myeloproliferative neoplasm with a small population of Philadelphia chromosome-positive clones in the bone marrow].. PubMed. 52(2). 73–7.
Zheng, Zhi, M Takahashi, Shin Aoki, et al.. (1998). Expression patterns of costimulatory molecules on cells derived from human hematological malignancies.. PubMed. 17(3). 251–8.37 indexed citations
13.
Uesugi, Y., et al.. (1995). [Essential thrombocythemia in transformation to smouldering megakaryoblastic leukemia with myelofibrosis].. PubMed. 36(10). 1210–6.5 indexed citations
14.
Takahashi, Masayuki, et al.. (1993). Combination therapy with rhGM-CSF and rhEpo for two patients with refractory anemia and aplastic anemia.. PubMed. 7(3). 153–8.4 indexed citations
15.
Moriyama, Y, Toshio Goto, S Hashimoto, et al.. (1993). Prediction of the ability to purge clonogenic B cell lymphoma from normal BM in vitro by heat: their survival curves correspond to a curve reflecting mortality in humans.. PubMed. 11(6). 437–41.4 indexed citations
Moriyama, Y, Takao Goto, Koji Nikkuni, et al.. (1991). Alpha-interferon broadens the difference between surviving fractions of normal and leukemic progenitor cells in vitro by heat: its application to marrow purging.. PubMed. 8(4). 301–5.2 indexed citations
18.
Nikkuni, Koji, et al.. (1991). Effect of hyperthermia on both primary proliferation and self-renewal of human leukemic progenitor cells in vitro: its application to in vitro purging.. PubMed. 5(4). 332–5.7 indexed citations
19.
Takahashi, Masayuki, Tatsuhiko Furukawa, Koji Nikkuni, et al.. (1991). Efficient introduction of a gene into hematopoietic cells in S-phase by electroporation.. PubMed. 19(5). 343–6.28 indexed citations
20.
Moriyama, Y, Koji Nikkuni, Hiroyuki Saito, et al.. (1990). In vitro sensitivity of human hematopoietic progenitor cells to hyperthermia: critical temperature for cells to survive and its application to in vitro purging.. PubMed. 6(4). 243–6.8 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.