Kōji Yamakawa

3.6k total citations
273 papers, 2.7k citations indexed

About

Kōji Yamakawa is a scholar working on Organic Chemistry, Materials Chemistry and Molecular Biology. According to data from OpenAlex, Kōji Yamakawa has authored 273 papers receiving a total of 2.7k indexed citations (citations by other indexed papers that have themselves been cited), including 133 papers in Organic Chemistry, 50 papers in Materials Chemistry and 41 papers in Molecular Biology. Recurrent topics in Kōji Yamakawa's work include Chemical Synthesis and Reactions (46 papers), Synthetic Organic Chemistry Methods (28 papers) and Hydrogen embrittlement and corrosion behaviors in metals (27 papers). Kōji Yamakawa is often cited by papers focused on Chemical Synthesis and Reactions (46 papers), Synthetic Organic Chemistry Methods (28 papers) and Hydrogen embrittlement and corrosion behaviors in metals (27 papers). Kōji Yamakawa collaborates with scholars based in Japan, United States and France. Kōji Yamakawa's co-authors include Tsuyoshi Satoh, Masao Hisatome, Kiyoshi Nishitani, Masaru Hori, Shoji Den, Hiroyuki Kano, Mineo Hiramatsu, Yoshiko Ueda, Shiro Yoshizawa and Shingo Kondo and has published in prestigious journals such as Journal of the American Chemical Society, Applied Physics Letters and Journal of Applied Physics.

In The Last Decade

Kōji Yamakawa

254 papers receiving 2.5k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Kōji Yamakawa Japan 25 1.5k 517 375 322 205 273 2.7k
Hideo D. Takagi Japan 25 610 0.4× 419 0.8× 309 0.8× 219 0.7× 253 1.2× 128 2.1k
Vinod P. Singh India 31 974 0.7× 1.1k 2.1× 254 0.7× 103 0.3× 396 1.9× 135 2.6k
Peter A. S. Smith United States 24 1.0k 0.7× 664 1.3× 356 0.9× 585 1.8× 250 1.2× 85 2.7k
Xiaohang Liu China 31 1.3k 0.8× 848 1.6× 241 0.6× 190 0.6× 260 1.3× 90 2.9k
Ken‐ichi Shinohara Japan 29 995 0.7× 698 1.4× 951 2.5× 275 0.9× 92 0.4× 137 2.6k
Laurent Thouin France 31 635 0.4× 462 0.9× 323 0.9× 1.1k 3.3× 78 0.4× 80 2.7k
Shinya Otsuka Japan 24 1.1k 0.7× 359 0.7× 231 0.6× 89 0.3× 96 0.5× 70 1.9k
Dong‐En Wang China 19 344 0.2× 565 1.1× 296 0.8× 210 0.7× 36 0.2× 40 1.3k
Koji Nitta Japan 25 617 0.4× 235 0.5× 296 0.8× 1.1k 3.3× 121 0.6× 71 2.5k
Takahito Itoh Japan 32 1.3k 0.9× 687 1.3× 911 2.4× 838 2.6× 60 0.3× 225 3.8k

Countries citing papers authored by Kōji Yamakawa

Since Specialization
Citations

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

Fields of papers citing papers by Kōji Yamakawa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kōji Yamakawa

This figure shows the co-authorship network connecting the top 25 collaborators of Kōji Yamakawa. A scholar is included among the top collaborators of Kōji Yamakawa 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 Kōji Yamakawa. Kōji Yamakawa 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.
Yamakawa, Kōji, et al.. (2009). Migration of foreign body from mouth to nose. Signa Vitae. 4(1). 33–33. 1 indexed citations
2.
Yamakawa, Kōji, et al.. (2007). Early morning upper airway discomfort and appearance on two X ray films. Signa Vitae. 2(2). 21–21. 1 indexed citations
3.
Hori, Masaru & Kōji Yamakawa. (2004). . Journal of The Surface Finishing Society of Japan. 55(12). 788–792. 3 indexed citations
4.
5.
Tsubakino, Harushige, et al.. (1998). Hydrogen attack and its monitoring by an electrochemical method. 380. 25–30. 1 indexed citations
6.
Togawa, Kiyoshi, Soichiro Miyazaki, Kōji Yamakawa, & Yoshiaki Itasaka. (1993). Respiratory Disorders during Sleep; Clinical Aspects and the Role of Otolaryngologists.. Practica Oto-Rhino-Laryngologica. 86(7). 929–939.
7.
Togawa, Kiyoshi, et al.. (1992). Sleep Disordered Breathing - Diagnosis and Tre atment. Practica oto-rhino-laryngologica Suppl. 1992(Supplement57). 1–26. 5 indexed citations
8.
Miyazaki, Soichiro, Yoshiaki Itasaka, Kōji Yamakawa, Masako Okawa, & Kiyoshi Togawa. (1989). Respiratory disturbance during sleep due to adenoid-tonsillar hypertrophy. American Journal of Otolaryngology. 10(2). 143–149. 24 indexed citations
9.
Yamakawa, Kōji, et al.. (1988). Study on stress corrosion cracking by spectral analysis.. Journal of the Society of Materials Science Japan. 37(412). 43–49. 4 indexed citations
10.
Yamakawa, Kōji, et al.. (1987). Development of Ni-S cathode for chlorine cell. Electrode characteristics.. Journal of the Metal Finishing Society of Japan. 38(8). 324–328. 2 indexed citations
11.
Tsubakino, Harushige, et al.. (1986). Relationship between microstructure and corrosion fatigue behavior in a high strength steel.. Journal of the Society of Materials Science Japan. 35(388). 19–24. 2 indexed citations
12.
Yamakawa, Kōji, et al.. (1986). Corrosion behavior of aluminum alloys in concrete.. Journal of the Society of Materials Science Japan. 35(388). 30–34.
13.
Yamakawa, Kōji, et al.. (1986). Corrosion behavior of aluminum alloys in mortar.. Journal of the Society of Materials Science Japan. 35(388). 25–29. 1 indexed citations
14.
Yamakawa, Kōji, et al.. (1986). Effect of Sodium Chloride on Corrosion of Aluminum Alloys Burried in Mortar and Concrete. Journal of the Society of Materials Science Japan. 35(398). 1310–1315.
15.
16.
Yamakawa, Kōji, et al.. (1984). . Journal of the Society of Materials Science Japan. 33(365). 191–197. 2 indexed citations
17.
Yamakawa, Kōji, et al.. (1983). . Journal of the Society of Materials Science Japan. 32(361). 1125–1131. 1 indexed citations
18.
Iida, Mitsugi, et al.. (1981). Microbial Formation of Lumisantonin from (-)-α-Santonin : Studies on Microbial Transformations (XX). Journal of Fermentation Technology. 59(6). 483–484. 6 indexed citations
19.
Fujii, Satoshi, et al.. (1981). . Journal of the Metal Finishing Society of Japan. 32(8). 403–409. 1 indexed citations
20.

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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