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D-Index & Metrics

Materials Science

D-Index
66
Citations
14975
World Ranking
5383
National Ranking
260

Akira Kohyama publication distribution in Materials Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Materials Science in 2026. The highlighted bar marks where Akira Kohyama sits on this spectrum.

50–69 publications: 28 scientists 70–89 publications: 152 scientists 90–109 publications: 356 scientists 110–129 publications: 487 scientists 130–149 publications: 723 scientists 150–169 publications: 835 scientists 170–189 publications: 850 scientists 190–209 publications: 891 scientists 210–229 publications: 862 scientists 230–249 publications: 766 scientists 250–269 publications: 726 scientists 270–289 publications: 665 scientists 290–309 publications: 593 scientists 310–329 publications: 537 scientists 330–349 publications: 477 scientists 350–369 publications: 440 scientists 370–389 publications: 356 scientists 390–409 publications: 321 scientists 410–429 publications: 256 scientists 430–449 publications: 246 scientists 450–469 publications: 216 scientists 470–489 publications: 212 scientists 490–509 publications: 174 scientists 510–529 publications: 194 scientists 530–549 publications: 162 scientists 550–569 publications: 131 scientists 570–589 publications: 111 scientists 590–609 publications: 103 scientists 610–629 publications: 99 scientists 630–649 publications: 77 scientists 650–669 publications: 92 scientists 670–689 publications: 56 scientists 690–709 publications: 53 scientists 710–729 publications: 53 scientists 730–749 publications: 38 scientists 750–769 publications: 52 scientists 770–789 publications: 43 scientists 790–809 publications: 38 scientists 810–829 publications: 34 scientists 830–849 publications: 25 scientists 850–869 publications: 18 scientists 870–889 publications: 20 scientists 890–909 publications: 24 scientists 910–929 publications: 27 scientists 930–949 publications: 20 scientists 950–969 publications: 17 scientists 970–989 publications: 10 scientists 990–1,009 publications: 16 scientists 1,010–1,029 publications: 13 scientists 1,030–1,049 publications: 12 scientists 1,050–1,069 publications: 9 scientists 1,070–1,089 publications: 8 scientists 1,090–1,109 publications: 7 scientists 1,110–1,129 publications: 9 scientists 1,130–1,149 publications: 2 scientists 1,150–1,162 publications: 5 scientists 1,163+ publications: 100 scientists
50 publications 1,163+

This scientist: 554 publications — 90th percentile

90% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,163 publications or more.

Akira Kohyama D-index placement in Materials Science in 2026

The chart shows the D-index (discipline H-index) distribution of Materials Science scientists ranked by Research.com in 2026. The highlighted bar marks where Akira Kohyama sits on this spectrum.

40–41 D-Index: 211 scientists 42–43 D-Index: 450 scientists 44–45 D-Index: 612 scientists 46–47 D-Index: 612 scientists 48–49 D-Index: 598 scientists 50–51 D-Index: 657 scientists 52–53 D-Index: 667 scientists 54–55 D-Index: 621 scientists 56–57 D-Index: 597 scientists 58–59 D-Index: 610 scientists 60–61 D-Index: 587 scientists 62–63 D-Index: 606 scientists 64–65 D-Index: 533 scientists 66–67 D-Index: 490 scientists 68–69 D-Index: 469 scientists 70–71 D-Index: 378 scientists 72–73 D-Index: 421 scientists 74–75 D-Index: 359 scientists 76–77 D-Index: 323 scientists 78–79 D-Index: 299 scientists 80–81 D-Index: 230 scientists 82–83 D-Index: 210 scientists 84–85 D-Index: 195 scientists 86–87 D-Index: 203 scientists 88–89 D-Index: 175 scientists 90–91 D-Index: 175 scientists 92–93 D-Index: 142 scientists 94–95 D-Index: 121 scientists 96–97 D-Index: 117 scientists 98–99 D-Index: 107 scientists 100–101 D-Index: 88 scientists 102–103 D-Index: 85 scientists 104–105 D-Index: 68 scientists 106–107 D-Index: 62 scientists 108–109 D-Index: 57 scientists 110–111 D-Index: 45 scientists 112–113 D-Index: 49 scientists 114–115 D-Index: 50 scientists 116–117 D-Index: 34 scientists 118–119 D-Index: 38 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 29 scientists 124–125 D-Index: 28 scientists 126–127 D-Index: 24 scientists 128–129 D-Index: 33 scientists 130–131 D-Index: 28 scientists 132–133 D-Index: 21 scientists 134–135 D-Index: 20 scientists 136–137 D-Index: 23 scientists 138–139 D-Index: 17 scientists 140–141 D-Index: 12 scientists 142–143 D-Index: 17 scientists 144–145 D-Index: 21 scientists 146–147 D-Index: 13 scientists 148–149 D-Index: 11 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 13 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 4 scientists 162–163 D-Index: 4 scientists 164 D-Index: 3 scientists 165+ D-Index: 98 scientists
40 D-Index 165+

This scientist: 66 D-Index — 59th percentile

59% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 165 D-Index or more.

Overview

Akira Kohyama is affiliated with the Muroran Institute of Technology in Japan. Their research primarily spans the fields of Medicine and Health Professions, with particular focus on subfields such as Oncology, General Health Professions, Pulmonary and Respiratory Medicine, and Gender Studies.

The scientist's recent publications address topics relevant to global surgical practices and challenges during the COVID-19 pandemic. Notable papers include:

  • "Surgeons' fear of getting infected by COVID19: A global survey" (2020, British journal of surgery)
  • "Impact of asymptomatic COVID-19 patients in global surgical practice during the COVID-19 pandemic" (2020, British journal of surgery)

Kohyama's research topics encompass:

  • COVID-19 and healthcare impacts
  • Healthcare professionals' stress and burnout
  • Infection Control and Ventilation
  • Healthcare cost, quality, practices
  • Diversity and Career in Medicine

Co-authorship collaborations include:

  • Yongbo An
  • Vittoria Bellato
  • Tsuyoshi Konishi
  • Gianluca Pellino
  • Bruno Sensi

The British journal of surgery is the primary venue where Kohyama's work has been published, indicating a focus on surgical and clinical implications within their research.

Best Publications

  • Low-activation ferritic and martensitic steels for fusion application

    A. Kohyama;A. Hishinuma;D.S. Gelles;R.L. Klueh

  • Current status and critical issues for development of SiC composites for fusion applications

    Yutai Katoh;Lance L. Snead;Charles H. Henager;A. Hasegawa

  • Single-Crystal SiC Nanowires with a Thin Carbon Coating for Stronger and Tougher Ceramic Composites

    Wen Yang;Hiroshi Araki;Chengchun Tang;Somsri Thaveethavorn

  • Current status and future R&D for reduced-activation ferritic/martensitic steels

    A Hishinuma;A Kohyama;R.L Klueh;D.S Gelles

  • Promise and challenges of SiCf/SiC composites for fusion energy applications

    Russell H. Jones;L. Giancarli;Akira Hasegawa;Y. Katoh

  • Design and material issues for high performance SiCf/SiC-based fusion power cores

    A. R. Raffray;R. Jones;G. Aiello;M. Billone

  • Status of silicon carbide composites for fusion

    L.L Snead;R.H Jones;A Kohyama;P Fenici

  • Issues and advances in SiCf/SiC composites development for fusion reactors

    B Riccardi;L Giancarli;A Hasegawa;Y Katoh

  • Critical issues and current status of SiC/SiC composites for fusion

    A. Hasegawa;A. Kohyama;R.H. Jones;L.L. Snead

  • Development of an extensive database of mechanical and physical properties for reduced-activation martensitic steel F82H

    S Jitsukawa;M Tamura;B van der Schaaf;R.L Klueh

  • Current status of SiC/SiC composites R&D

    P. Fenici;A.J. Frias Rebelo;R.H. Jones;A. Kohyama

  • Microstructural development in cubic silicon carbide during irradiation at elevated temperatures

    Y. Katoh;N. Hashimoto;S. Kondo;L.L. Snead

  • SiC/SiC composites through transient eutectic-phase route for fusion applications

    Y Katoh;Y Katoh;A Kohyama;T Nozawa;M Sato

  • Status of R&D activities on materials for fusion power reactors

    N. Baluc;K. Abe;J. L. Boutard;V. M. Chernov

  • Preparation of SiC/SiC Composites by Hot Pressing, Using Tyranno-SA Fiber as Reinforcement

    Shaoming Dong;Yutai Katoh;Akira Kohyama

  • Influence of surface structure of SiC nano-sized powder analyzed by X-ray photoelectron spectroscopy on basic powder characteristics

    Kazuya Shimoda;Joon-Soo Park;Tatsuya Hinoki;Akira Kohyama

  • Recent results of the reduced activation ferritic/martensitic steel development

    S Jitsukawa;A Kimura;A Kohyama;R.L Klueh

  • Effect of geometrical parameters in micro-grooved crosshatch pattern under lubricated sliding friction

    Min-soo Suh;Young-hun Chae;Seock-sam Kim;Tatsuya Hinoki

  • Thermo-mechanical properties and microstructure of silicon carbide composites fabricated by nano-infiltrated transient eutectoid process

    Y Katoh;S.M Dong;A Kohyama

  • Recent advances and issues in development of silicon carbide composites for fusion applications

    T. Nozawa;T. Hinoki;A. Hasegawa;A. Kohyama

Frequent Co-Authors

Yutai Katoh
Yutai Katoh Oak Ridge National Laboratory
Akihiko Kimura
Akihiko Kimura Kyoto University
Ronald L. Klueh
Ronald L. Klueh Oak Ridge National Laboratory
Shigeharu Ukai
Shigeharu Ukai Hokkaido University
Edgar Lara-Curzio
Edgar Lara-Curzio Oak Ridge National Laboratory
Milena Salvo
Milena Salvo Polytechnic University of Turin
Ji-Jung Kai
Ji-Jung Kai City University of Hong Kong
G.R. Odette
G.R. Odette University of California, Santa Barbara
Steven J. Zinkle
Steven J. Zinkle University of Tennessee at Knoxville

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