World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
53
Citations
8654
World Ranking
13217
National Ranking
1004

Ken Takaki publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Ken Takaki sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 205 publications — 34th percentile

34% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

Ken Takaki D-index placement in Chemistry in 2026

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

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 53 D-Index — 28th percentile

28% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Overview

Ken Takaki is affiliated with Kyushu University in Japan and is an active researcher in the field of medicine. Their work spans several subfields including immunology, reproductive medicine, obstetrics and gynecology, ophthalmology, and oncology.

The scientist's research topics primarily focus on reproductive system and pregnancy, endometriosis research and treatment, pregnancy and preeclampsia studies, ocular oncology and treatments, as well as cutaneous melanoma detection and management. Additionally, their work involves studying melanin and skin pigmentation.

Ken Takaki has published research in various academic venues. Notably, these include:

  • International Journal of Functional Nutrition
  • Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association)

Some of their recent publications include:

  • "Vitamin D3 regulates HAND2 expression in endometrial stromal cell decidualization", 2024, International Journal of Functional Nutrition
  • "A Case of Sigmoid Colon and Liver Metastases 14 Years after Surgery for Choroidal Malignant Melanoma", 2024, Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association)

Ken Takaki frequently collaborates with Namika Yoshida, Ayaka Tanaka, Susumu Tanaka, Toshihiro Sato, and Ayano Nakamura.

Best Publications

  • Autothermal reforming of CH4 over supported Ni catalysts prepared from Mg–Al hydrotalcite-like anionic clay

    Katsuomi Takehira;Tetsuya Shishido;Peng Wang;Tokuhisa Kosaka

  • Behavior of active sites on Cr-MCM-41 catalysts during the dehydrogenation of propane with CO2

    Katsuomi Takehira;Yoshihiko Ohishi;Tetsuya Shishido;Tomonori Kawabata

  • A simple and efficient iron-catalyzed intramolecular hydroamination of unactivated olefins.

    Kimihiro Komeyama;Takayuki Morimoto;Ken Takaki

  • Active Cu/ZnO and Cu/ZnO/Al2O3 catalysts prepared by homogeneous precipitation method in steam reforming of methanol

    Tetsuya Shishido;Yoshihiro Yamamoto;Hiroyuki Morioka;Ken Takaki

  • Copper-Catalyzed Three-Component Carboboration of Alkynes and Alkenes

    Hiroto Yoshida;Ikuo Kageyuki;Ken Takaki

  • Copper-Catalyzed Borylation Reactions of Alkynes and Arynes†

    Hiroto Yoshida;Shota Kawashima;Yuki Takemoto;Kengo Okada

  • Aryne Insertion Reactions into Carbon–Carbon σ-Bonds

    Hiroto Yoshida;Ken Takaki

  • Partial oxidation of methane over Ni/Mg-Al oxide catalysts prepared by solid phase crystallization method from Mg-Al hydrotalcite-like precursors

    Tetsuya Shishido;Masanori Sukenobu;Hiroyuki Morioka;Masuo Kondo

  • Cationic iron-catalyzed intramolecular alkyne-hydroarylation with electron-deficient arenes

    Kimihiro Komeyama;Ryoichi Igawa;Ken Takaki

  • Ytterbium(III) Triflate Catalyzed Synthesis of Quinoline Derivatives from N-Arylaldimines and Vinyl Ethers

    Yoshikazu Makioka;Takaaki Shindo;Yuki Taniguchi;Ken Takaki

  • A masked diboron in Cu-catalysed borylation reaction: highly regioselective formal hydroboration of alkynes for synthesis of branched alkenylborons

    Hiroto Yoshida;Yuki Takemoto;Ken Takaki

  • Mechanism of reconstitution of hydrotalcite leading to eggshell-type Ni loading on MgAl mixed oxide

    Katsuomi Takehira;Tomonori Kawabata;Tetsuya Shishido;Kazuhiro Murakami

  • Dehydrogenation of ethylbenzene with CO2 over Cr-MCM-41 catalyst

    Yoshihiko Ohishi;Tomonori Kawabata;Tetsuya Shishido;Ken Takaki

  • Rare-earth silylamide-catalyzed selective dimerization of terminal alkynes and subsequent hydrophosphination in one pot.

    Kimihiro Komeyama;Tomonori Kawabata;Katsuomi Takehira;Ken Takaki

  • Intermolecular Hydrophosphination of Alkynes and Related Carbon−Carbon Multiple Bonds Catalyzed by Organoytterbiums

    Ken Takaki;Go Koshoji;Kimihiro Komeyama;Mitsuhiro Takeda

  • Palladium(II) and/or copper(II)-catalyzed carboxylation of small alkanes such as methane and ethane with carbon monoxide

    Kazuyuki Nakata;Yoshinori Yamaoka;Tsutomu Miyata;Yuki Taniguchi

  • PALLADIUM(II)-CATALYZED CARBOXYLATION OF BENZENE AND OTHER AROMATIC COMPOUNDS WITH CARBON MONOXIDE UNDER VERY MILD CONDITIONS

    Wenjun Lu;Yoshinori Yamaoka;Yuki Taniguchi;Tsugio Kitamura

  • Nickel containing Mg-Al hydrotalcite-type anionic clay catalyst for the oxidation of alcohols with molecular oxygen

    Tomonori Kawabata;Yuriko Shinozuka;Yoshihiko Ohishi;Tetsuya Shishido

  • Three‐Component Coupling of Arynes and Organic Bromides

    Hiroto Yoshida;Yuji Asatsu;Yasuhiro Mimura;Yu Ito

  • Synchronous Ar-F and Ar-Sn bond formation through fluorostannylation of arynes.

    Hiroto Yoshida;Ryuma Yoshida;Ken Takaki

Frequent Co-Authors

Yuzo Fujiwara
Yuzo Fujiwara Kyushu University
Hiroto Yoshida
Hiroto Yoshida Hiroshima University
Tetsuya Shishido
Tetsuya Shishido Tokyo Metropolitan University
Katsuomi Takehira
Katsuomi Takehira Hiroshima University
Itaru Osaka
Itaru Osaka Hiroshima University
Joji Ohshita
Joji Ohshita Hiroshima University
Ye Wang
Ye Wang Xiamen University
Qinghong Zhang
Qinghong Zhang Xiamen University
Yuko Fujiwara
Yuko Fujiwara Harvard University
Mitsuo Ishikawa
Mitsuo Ishikawa Hiroshima University

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