Koichi Oguma

1.7k total citations
99 papers, 1.5k citations indexed

About

Koichi Oguma is a scholar working on Analytical Chemistry, Spectroscopy and Inorganic Chemistry. According to data from OpenAlex, Koichi Oguma has authored 99 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 61 papers in Analytical Chemistry, 26 papers in Spectroscopy and 26 papers in Inorganic Chemistry. Recurrent topics in Koichi Oguma's work include Analytical chemistry methods development (54 papers), Radioactive element chemistry and processing (24 papers) and Analytical Chemistry and Chromatography (21 papers). Koichi Oguma is often cited by papers focused on Analytical chemistry methods development (54 papers), Radioactive element chemistry and processing (24 papers) and Analytical Chemistry and Chromatography (21 papers). Koichi Oguma collaborates with scholars based in Japan, China and United Kingdom. Koichi Oguma's co-authors include Masami Shibukawa, Hai‐Long Wu, Rokurô Kuroda, Toshihiro Suzuki, Kyoichi Saito, Masanori Fujinami, Junichi Nakajima, Takanobu Sugo, Takayuki Baba and Hiroki Sakurai and has published in prestigious journals such as Analytical Chemistry, Langmuir and Journal of Catalysis.

In The Last Decade

Koichi Oguma

98 papers receiving 1.4k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Koichi Oguma Japan 21 783 342 307 276 220 99 1.5k
Shukuro Igarashi Japan 19 591 0.8× 461 1.3× 162 0.5× 416 1.5× 112 0.5× 115 1.4k
Yu. A. Zolotov Russia 25 915 1.2× 529 1.5× 258 0.8× 440 1.6× 172 0.8× 223 2.2k
Hiroto Watanabe Japan 18 704 0.9× 587 1.7× 134 0.4× 353 1.3× 79 0.4× 73 1.6k
Takahiro Kumamaru Japan 21 1.1k 1.4× 452 1.3× 134 0.4× 643 2.3× 117 0.5× 150 1.7k
E. Casassas Spain 24 763 1.0× 502 1.5× 94 0.3× 598 2.2× 247 1.1× 108 2.0k
R. B. Jordan Canada 29 1.0k 1.3× 227 0.7× 528 1.7× 240 0.9× 361 1.6× 172 3.1k
M. Soledad Larrechi Spain 23 935 1.2× 277 0.8× 93 0.3× 161 0.6× 385 1.8× 85 2.2k
G. Schmuckler Israel 15 346 0.4× 486 1.4× 156 0.5× 104 0.4× 147 0.7× 39 1.1k
Jinguang Wu China 23 462 0.6× 401 1.2× 243 0.8× 72 0.3× 140 0.6× 126 1.6k
Masami Shibukawa Japan 20 638 0.8× 709 2.1× 95 0.3× 141 0.5× 105 0.5× 109 1.6k

Countries citing papers authored by Koichi Oguma

Since Specialization
Citations

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

Fields of papers citing papers by Koichi Oguma

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koichi Oguma

This figure shows the co-authorship network connecting the top 25 collaborators of Koichi Oguma. A scholar is included among the top collaborators of Koichi Oguma 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 Koichi Oguma. Koichi Oguma is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Fujinami, Masanori, Koun Shirai, Koichi Oguma, et al.. (2019). Gettering of Cu in self-ion irradiated silicon studied by positron annihilation spectroscopy. Japanese Journal of Applied Physics. 58(9). 96501–96501. 3 indexed citations
2.
Oguma, Koichi & Nobuo Uehara. (2014). Recent Advances of Trace Analysis of Iron and Steel by Separation and Preconcentration Techniques. Tetsu-to-Hagane. 100(7). 818–831. 2 indexed citations
3.
Oguma, Koichi, Osamu YOSHIOKA, Junji Noro, & Hiroki Sakurai. (2012). Simultaneous determination of vanadium(IV) and vanadium(V) by flow injection analysis using kinetic spectrophotometry with Xylenol Orange. Talanta. 96. 44–49. 7 indexed citations
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Fujinami, Masanori, et al.. (2008). Production of a Positron Microprobe Using a Transmission Remoderator. Analytical Sciences. 24(1). 73–79. 21 indexed citations
7.
Arai, Takayoshi, Toru Sato, Hirofumi Kanoh, et al.. (2007). Organic–Inorganic Hybrid Polymer‐Encapsulated Magnetic Nanobead Catalysts. Chemistry - A European Journal. 14(3). 882–885. 57 indexed citations
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Oguma, Koichi, et al.. (2005). Indirect Determination of Uranium by the On-line Reduction and Fluorimetric Detection of Cerium(III). Analytical Sciences. 21(2). 155–159. 7 indexed citations
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Wu, Hai‐Long, Ru‐Qin Yu, & Koichi Oguma. (2002). Trilinear Component Analysis in Modern Analytical Chemistry. 17. 8 indexed citations
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Wu, Hailong, Masami Shibukawa, & Koichi Oguma. (1997). Second-Order Calibration Based on Alternating Trilinear Decomposition:A Comparison with the Traditional PARAFAC Algorithm (Proceedings of Asianalysis 4--The Fourth Asian Conference on Analytical Sciences). Analytical Sciences. 13. 53–58. 1 indexed citations
15.
Sato, Hiroki, et al.. (1997). Isolation of intact transition protein 2 with three zinc finger motifs from boar late spermatid nuclei. IUBMB Life. 42(5). 865–872. 5 indexed citations
16.
Oguma, Koichi, et al.. (1989). Determination of Trace Beryllium in Biological Materials by a Combined Ion-Exchange-Graphite Furnace Atomic Absorption Spectrometry. Analytical Sciences. 5(5). 531–533. 5 indexed citations
17.
Kuroda, Rokurô, et al.. (1979). Anion-exchange behaviour and separation of metal ions on deae-cellulose in oxalic acid media. Talanta. 26(3). 211–214. 7 indexed citations
18.
Kuroda, Rokurô, Takaaki Kondo, & Koichi Oguma. (1973). Anion-exchange behaviour of various metals on DEAE-cellulose in mixed acetic acid—nitric acid media. Talanta. 20(6). 533–539. 6 indexed citations
19.
Kuroda, Rokurô, Takaaki Kondo, & Koichi Oguma. (1972). Ion-exchange behaviour of metals on deae-cellulose in methanol-thiocyanate-hydrochloric acid media. Talanta. 19(9). 1043–1048. 5 indexed citations
20.
Kuroda, Rokurô, Koichi Oguma, & K. Nakamura. (1970). Reversed-Phase Thin-Layer Chromatography of A Number of Metal Ions in the System Amberlite LA-2-Mixture of Hydrochloric Acid and Thiocyanate. Nippon kagaku zassi. 91(12). 1155–1158. 4 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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