Koji UKEGAWA

697 total citations
38 papers, 611 citations indexed

About

Koji UKEGAWA is a scholar working on Mechanical Engineering, Biomedical Engineering and Analytical Chemistry. According to data from OpenAlex, Koji UKEGAWA has authored 38 papers receiving a total of 611 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Mechanical Engineering, 11 papers in Biomedical Engineering and 10 papers in Analytical Chemistry. Recurrent topics in Koji UKEGAWA's work include Catalysis and Hydrodesulfurization Studies (17 papers), Petroleum Processing and Analysis (10 papers) and Biodiesel Production and Applications (4 papers). Koji UKEGAWA is often cited by papers focused on Catalysis and Hydrodesulfurization Studies (17 papers), Petroleum Processing and Analysis (10 papers) and Biodiesel Production and Applications (4 papers). Koji UKEGAWA collaborates with scholars based in Japan and China. Koji UKEGAWA's co-authors include Kazumasa Yazu, Yorihiro Yamamoto, Keiji Miki, Takeshi Furuya, Mitsunori Makino, Yōichi Kodera, Akimitsu Matsumura, Etsuo Niki, Ikuo Saito and Shinya Sato and has published in prestigious journals such as Renewable and Sustainable Energy Reviews, Fuel and Catalysis Today.

In The Last Decade

Koji UKEGAWA

33 papers receiving 586 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Koji UKEGAWA Japan 12 386 254 204 156 136 38 611
B. Burghoff Netherlands 14 140 0.4× 145 0.6× 57 0.3× 101 0.6× 64 0.5× 18 515
Aynur Şenol Türkiye 18 262 0.7× 170 0.7× 109 0.5× 353 2.3× 85 0.6× 55 835
L. Boyadzhiev Bulgaria 17 421 1.1× 47 0.2× 60 0.3× 274 1.8× 58 0.4× 50 731
Z. Lazarova Bulgaria 14 278 0.7× 46 0.2× 81 0.4× 160 1.0× 53 0.4× 25 585
Russell L. Holliday United States 8 121 0.3× 52 0.2× 81 0.4× 431 2.8× 66 0.5× 10 570
Samah E. E. Warrag United Arab Emirates 16 329 0.9× 229 0.9× 173 0.8× 245 1.6× 741 5.4× 17 988
Jesse R. Vanderveen Canada 10 116 0.3× 69 0.3× 109 0.5× 175 1.1× 102 0.8× 15 553
Yolanda Sánchez‐Vicente United Kingdom 14 172 0.4× 55 0.2× 115 0.6× 354 2.3× 84 0.6× 33 580
John W. Frankenfeld United States 11 240 0.6× 81 0.3× 132 0.6× 151 1.0× 26 0.2× 31 601
Aldo Bosetti Italy 14 147 0.4× 77 0.3× 70 0.3× 307 2.0× 28 0.2× 25 644

Countries citing papers authored by Koji UKEGAWA

Since Specialization
Citations

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

Fields of papers citing papers by Koji UKEGAWA

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koji UKEGAWA

This figure shows the co-authorship network connecting the top 25 collaborators of Koji UKEGAWA. A scholar is included among the top collaborators of Koji UKEGAWA 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 UKEGAWA. Koji UKEGAWA 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.
Tabata, Tomohiro, et al.. (2011). Life cycle assessment for co-firing semi-carbonized fuel manufactured using woody biomass with coal: A case study in the central area of Wakayama, Japan. Renewable and Sustainable Energy Reviews. 15(6). 2772–2778. 23 indexed citations
2.
Yazu, Kazumasa, Mitsunori Makino, & Koji UKEGAWA. (2004). Oxidative Desulfurization of Diesel Oil with Hydrogen Peroxide in the Presence of Acid Catalyst in Diesel Oil/Acetic Acid Biphasic System. Chemistry Letters. 33(10). 1306–1307. 73 indexed citations
3.
Yazu, Kazumasa, Yorihiro Yamamoto, Takeshi Furuya, Keiji Miki, & Koji UKEGAWA. (2001). Oxidation of Dibenzothiophenes in an Organic Biphasic System and Its Application to Oxidative Desulfurization of Light Oil. Energy & Fuels. 15(6). 1535–1536. 182 indexed citations
4.
Shimizu, Ken D., et al.. (2001). Catalytic activity for synthesis of isomerized products from benzene over platinum-supported sulfated zirconia. Applied Catalysis A General. 206(1). 79–86. 29 indexed citations
5.
Yazu, Kazumasa, Yorihiro Yamamoto, Keiji Miki, & Koji UKEGAWA. (2001). Requirement of Polar Organic Solvents for Photosensitized Oxidation of Dibenzothiophenes and Biphasic Photooxidative Desulfurization of Light Gas Oil.. Journal of Oleo Science. 50(6). 521–525. 8 indexed citations
6.
Kodera, Yōichi, Teruo KONDO, Ikuo Saito, Yoshiki SATO, & Koji UKEGAWA. (2000). Continuous-Distribution Kinetic Analysis for Asphaltene Hydrocracking. Energy & Fuels. 14(2). 291–296. 7 indexed citations
7.
Sato, Shinya, et al.. (1997). Methanol-Modiated Extraction of Coal Liquid. Extraction Yields and Partition Coefficients of Phenols.. Journal of the Japan Institute of Energy. 76(11). 1054–1062. 1 indexed citations
8.
Yazu, Kazumasa, Yorihiro Yamamoto, Koji UKEGAWA, & Etsuo Niki. (1996). Mechanism of lower oxidizability of eicosapentaenoate than linoleate in aqueous micelles. Lipids. 31(3). 337–40. 48 indexed citations
9.
Yazu, Kazumasa, Koji UKEGAWA, Yorihiro Yamamoto, & Etsuo Niki. (1994). Effects of the Nitrogen Moieties of Phosphatidylethanolamine and Phosphatidylcholine on the Autoxidation of These Phospholipids in Aqueous Dispersions. Journal of Japan Oil Chemists Society. 43(4). 350–356. 1 indexed citations
10.
Kodera, Yōichi, Koji UKEGAWA, Akimitsu Matsumura, & Xiaoliang Ma. (1993). Methanol-mediated extraction process for the separation of phenolic compounds from coal liquids. Fuel. 72(1). 57–58. 22 indexed citations
11.
Kodera, Yōichi, Akihiro Wakisaka, Koji UKEGAWA, et al.. (1992). Photocoloration and Photochemical Decoloration of Salicylideneaniline. Journal of the Japan Society of Colour Material. 65(5). 294–297. 4 indexed citations
12.
Yazu, Kazumasa, Masahiro Saito, Koji UKEGAWA, et al.. (1990). Liquid phase autoxidation of cresols catalyzed by metal acetate-Bromide ion in acetic anhydride.. NIPPON KAGAKU KAISHI. 92–96. 1 indexed citations
13.
Yoshitomi, Suehiko, et al.. (1988). Present status and technical problems for coal liquids and its utilization.. Journal of the Fuel Society of Japan. 67(1). 2–13. 1 indexed citations
14.
Yamamoto, Yorihiro, et al.. (1986). Degradation and stabilization of coal-derived liquid. II. Coloration of gas oil fraction of coal liquid.. Journal of the Fuel Society of Japan. 65(1). 19–25. 2 indexed citations
15.
16.
UKEGAWA, Koji, et al.. (1985). Degradation and stabilization of coal-derived liquid. I. Coloration of nitrogen-containing model compounds.. Journal of the Fuel Society of Japan. 64(12). 997–1002.
17.
SATO, Yoshiki, et al.. (1984). Hydrotreating of Coal Derived Middle Distillate and Evaluation of the Hydrotreated Oil (Part 5). Sekiyu Gakkaishi. 27(5). 433–439. 2 indexed citations
18.
Sasaki, Yoshiyuki, et al.. (1983). Hydrocraching of Heavy Oils with Highly Dispersed Vanadium Catalysts. Sekiyu Gakkaishi. 26(6). 472–477. 1 indexed citations
19.
UKEGAWA, Koji, et al.. (1980). Hydrocracking of Heavy Oils with Fine Powder Catalysts (Part 4). Sekiyu Gakkaishi. 23(4). 280–286. 1 indexed citations
20.
KONDO, Teruo, et al.. (1978). Hydrocracking of Heavy Oils with Fine Powder Catalysts (Part 1). Sekiyu Gakkaishi. 21(6). 372–379. 2 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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