Haruo Kumagai

561 total citations
24 papers, 472 citations indexed

About

Haruo Kumagai is a scholar working on Ocean Engineering, Mechanical Engineering and Biomedical Engineering. According to data from OpenAlex, Haruo Kumagai has authored 24 papers receiving a total of 472 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Ocean Engineering, 11 papers in Mechanical Engineering and 10 papers in Biomedical Engineering. Recurrent topics in Haruo Kumagai's work include Coal Properties and Utilization (11 papers), Thermochemical Biomass Conversion Processes (9 papers) and NMR spectroscopy and applications (6 papers). Haruo Kumagai is often cited by papers focused on Coal Properties and Utilization (11 papers), Thermochemical Biomass Conversion Processes (9 papers) and NMR spectroscopy and applications (6 papers). Haruo Kumagai collaborates with scholars based in Japan, United States and Canada. Haruo Kumagai's co-authors include Tadatoshi Chiba, Jun‐ichiro Hayashi, Koyo Norinaga, Toshimasa Takanohashi, Masashi Iino, Yuzo Sanada, Tadashi Yoshida, Toshinori Inoue, Juji Mondori and Chiharu Yamaguchi and has published in prestigious journals such as Carbon, Fuel and Energy & Fuels.

In The Last Decade

Haruo Kumagai

23 papers receiving 458 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Haruo Kumagai Japan	13	234	226	119	100	77	24	472
Richard F. Yarzab United States	7	174 0.7×	109 0.5×	74 0.6×	102 1.0×	115 1.5×	8	371
Tieying Pan China	10	402 1.7×	194 0.9×	85 0.7×	154 1.5×	174 2.3×	18	553
Shigang Kang China	9	242 1.0×	154 0.7×	91 0.8×	111 1.1×	89 1.2×	13	417
Xilan Lu China	7	339 1.4×	156 0.7×	66 0.6×	147 1.5×	137 1.8×	8	457
W. Hodek Germany	7	320 1.4×	133 0.6×	51 0.4×	144 1.4×	94 1.2×	11	439
Yūzō Toda Japan	11	155 0.7×	188 0.8×	118 1.0×	107 1.1×	56 0.7×	22	400
Yosuke Maekawa Japan	14	216 0.9×	74 0.3×	93 0.8×	206 2.1×	49 0.6×	53	486
Yu. F. Patrakov Russia	9	87 0.4×	105 0.5×	77 0.6×	106 1.1×	52 0.7×	84	293
G.V. Deshpande United States	7	496 2.1×	134 0.6×	77 0.6×	168 1.7×	66 0.9×	8	638
D.J. Allardice Australia	13	292 1.2×	396 1.8×	187 1.6×	213 2.1×	160 2.1×	18	706

Countries citing papers authored by Haruo Kumagai

Since Specialization

Citations

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

Fields of papers citing papers by Haruo Kumagai

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Haruo Kumagai

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

All Works

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20 of 20 papers shown

Inoue, Toshinori, et al.. (2015). Mathematical model of the water sorption kinetics of UBC. Fuel Processing Technology. 137. 194–203. 7 indexed citations

Inoue, Toshinori, et al.. (2014). Water Adsorption and Desorption of Upgraded Brown Coal. Part 1: Isotherms of Adsorption and Desorption. Energy & Fuels. 28(8). 4986–4992. 11 indexed citations

Inoue, Toshinori, et al.. (2014). Mathematical model of water sorption isotherms of UBC. Fuel Processing Technology. 131. 133–141. 15 indexed citations

SHIMADA, Sohei, et al.. (2010). Study on CO2 Sorption on Coal Measured by Heat of Sorption and Spin-Spin Relaxation. Journal of MMIJ. 126(10/11). 608–613.

Iino, Masashi, et al.. (2006). Increase in Extraction Yields of Coals by Water Treatment: Beulah-Zap Lignite. Energy & Fuels. 21(1). 205–208. 6 indexed citations

Kumagai, Haruo, Izumi Shimoyama, & Yasuyuki Harada. (2006). High Temperature EPR Study on the Thermoplastic and Re-solidification Phenomenon of Coal upon Heating. Tetsu-to-Hagane. 92(3). 122–126. 1 indexed citations

Iino, Masashi, et al.. (2004). Increase in Extraction Yields of Coals by Water Treatment. Energy & Fuels. 18(5). 1414–1418. 27 indexed citations

Yoshida, Takahiro, Toshimasa Takanohashi, Masashi Iino, Haruo Kumagai, & Kenji Kato. (2004). Interactions among Different Fractions in the Thermoplastic State of Goonyella Coking Coal. Energy & Fuels. 18(2). 349–356. 12 indexed citations

Numata, Yukari, Haruo Kumagai, Hiroyuki Kono, Tomoki Erata, & Mitsuo Takai. (2004). Structural Analysis of Cellulose Triacetate I by Molecular Dynamics Simulation. Sen i Gakkaishi. 60(3). 75–80. 2 indexed citations

10.

Li, Chunqi, Toshimasa Takanohashi, Ikuo Saito, et al.. (2002). The Behavior of Free Radicals in Coal at Temperatures up to 300 °C in Various Organic Solvents, Using in Situ EPR Spectroscopy. Energy & Fuels. 16(5). 1116–1120. 14 indexed citations

11.

Hayashi, Jun‐ichiro, Hiroshi Takahashi, Satoshi Doi, et al.. (2000). Reactions in Brown Coal Pyrolysis Responsible for Heating Rate Effect on Tar Yield. Energy & Fuels. 14(2). 400–408. 58 indexed citations

12.

Takanohashi, Toshimasa, Takahiro Yoshida, Masashi Iino, Haruo Kumagai, & Kenji Kato. (1999). Relationship between Variation of Parameters and Behaviors of Coals during Heating. Tetsu-to-Hagane. 85(5). 382–386. 8 indexed citations

13.

Norinaga, Koyo, Haruo Kumagai, Jun‐ichiro Hayashi, & Tadatoshi Chiba. (1998). Evaluation of Drying Induced Changes in the Molecular Mobility of Coal by Means of Pulsed Proton NMR. Energy & Fuels. 12(5). 1013–1019. 21 indexed citations

14.

Norinaga, Koyo, Haruo Kumagai, Jun‐ichiro Hayashi, & Tadatoshi Chiba. (1998). Classification of Water Sorbed in Coal on the Basis of Congelation Characteristics. Energy & Fuels. 12(3). 574–579. 80 indexed citations

15.

Nakamura, Kazuo, Toshimasa Takanohashi, Masashi Iino, et al.. (1995). A Model Structure of Zao Zhuang Bituminous Coal. Energy & Fuels. 9(6). 1003–1010. 46 indexed citations

16.

Yamaguchi, Chiharu, et al.. (1995). Air-blowing reactions of pitch: I. Oxidation of aromatic hydrocarbons. Carbon. 33(2). 193–201. 41 indexed citations

17.

Yamaguchi, Chiharu, et al.. (1994). Properties and Molecular Structure of Pitches Produced in Air-Blowing Reaction. TANSO. 1994(162). 78–83. 4 indexed citations

18.

Yamaguchi, Chiharu, et al.. (1994). Study on Chemical Structure of Meso-Carbon Microbeads Made from Coal-Tar Pitches by 13C-NMR and ESR Methods. TANSO. 1994(164). 193–198. 2 indexed citations

19.

Yamaguchi, Chiharu, et al.. (1994). Structure and Characterization of Air Blown Pitch as a Carbon Fiber Precursor. TANSO. 1994(163). 124–132. 1 indexed citations

20.

Sanada, Yuzo, Haruo Kumagai, & Masahide Sasaki. (1994). E.s.r. study of electron acceptor doped coals. Fuel. 73(6). 840–842. 6 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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