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Sakae Takenaka

Sakae Takenaka

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 50 14418 12983 1127 1024 165 8513

Sakae Takenaka publications per year

The chart shows the history of publications by Sakae Takenaka between 1994 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Sakae Takenaka published across 32 years, from 1994 to 2025, averaging 5.9 papers a year. Output peaked at 20 publications in 2004. 12 of the 189 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1994 to 2025. Vertical axis: number of publications, 0 to 20. Peak 20 publications in 2004. 1994: 3 publications 1995: 2 publications 1996: 3 publications 1997: 5 publications 1998: 4 publications 1999: 5 publications 2000: 7 publications 2001: 8 publications 2002: 6 publications 2003: 10 publications 2004: 20 publications 2005: 7 publications 2006: 9 publications 2007: 7 publications 2008: 7 publications 2009: 8 publications 2010: 10 publications 2011: 6 publications 2012: 6 publications 2013: 6 publications 2014: 2 publications 2015: 7 publications 2016: 1 publication 2017: 5 publications 2018: 5 publications 2019: 1 publication 2020: 2 publications 2021: 4 publications 2022: 2 publications 2023: 9 publications 2024: 5 publications 2025: 7 publications
1994 2025

189 publications in total across all disciplines

View publications per year as a table
Sakae Takenaka: publications per year, 1994 to 2025
Year Publications
1994 3
1995 2
1996 3
1997 5
1998 4
1999 5
2000 7
2001 8
2002 6
2003 10
2004 20
2005 7
2006 9
2007 7
2008 7
2009 8
2010 10
2011 6
2012 6
2013 6
2014 2
2015 7
2016 1
2017 5
2018 5
2019 1
2020 2
2021 4
2022 2
2023 9
2024 5
2025 7
Total 189
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Sakae Takenaka publications per year - data summary

  • Sakae Takenaka, a Chemistry scholar from Doshisha University, has 189 publications recorded across 32 years, from 1994 to 2025.
  • The oldest publication on record dates to 1994 and the most recent to 2025.
  • The most productive year is 2004, with 20 publications.
  • The least productive years with any output are 2016 and 2019, with 1 publication each.
  • The rate of publication averages 5.9 papers per year over the whole span, or 5.9 per year counting only the 32 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 27 publications, 14% of the career total.
  • Split into equal eras - 1994-2004: 73 publications (6.6 per year); 2005-2015: 75 publications (6.8 per year); 2016-2025: 41 publications (4.1 per year).
  • Comparing the opening and closing eras, the overall trend of publication is declining.

Sakae Takenaka 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 Sakae Takenaka sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 161–180 publications, is where this scientist sits. 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
61–80 publications 1,295+

This scientist: 165 publications — 19th percentile

19% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350 165
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Sakae Takenaka publication distribution in Chemistry in 2026 - data summary

  • The chart plots the publication count of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 63 ranges running from 61–80 to 1,295+ publications.
  • Sakae Takenaka, a Chemistry scholar from Doshisha University, records 165 publications - the 19th percentile of the discipline.
  • 19% of ranked Chemistry scientists score the same or lower than Sakae Takenaka, and about 81% score higher.
  • The median of the discipline falls in the 241–260 publications range, and Sakae Takenaka ranks below the median.
  • The most crowded range is 161–180 publications, holding 1,350 scientists (8% of the field).
  • 77% of the field sits in the lowest quarter of the value range (up to 361–380 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 1,295 publications or more, 100 scientists in all (<1% of the field).

Sakae Takenaka 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 Sakae Takenaka sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 50–51 D-Index, is where this scientist sits. 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
40–41 D-Index 159+

This scientist: 50 D-Index — 21st percentile

21% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861 50
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Sakae Takenaka D-index placement in Chemistry in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 61 ranges running from 40–41 to 159+ D-Index.
  • Sakae Takenaka, a Chemistry scholar from Doshisha University, records 50 D-Index - the 21st percentile of the discipline.
  • 21% of ranked Chemistry scientists score the same or lower than Sakae Takenaka, and about 79% score higher.
  • The median of the discipline falls in the 62–63 D-Index range, and Sakae Takenaka ranks below the median.
  • The most crowded range is 56–57 D-Index, holding 1,051 scientists (6% of the field).
  • 70% of the field sits in the lowest quarter of the value range (up to 70–71 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 159 D-Index or more, 98 scientists in all (<1% of the field).

Overview

Sakae Takenaka is affiliated with Doshisha University in Japan and has contributed to various research fields, primarily focusing on medicine. Their work encompasses subfields such as cardiology and cardiovascular medicine, electrical and electronic engineering, catalysis, materials chemistry, and radiology, nuclear medicine, and imaging. The research topics covered by Takenaka include cardiac valve diseases and treatments, catalysis and oxidation reactions, catalytic processes in materials science, electrocatalysts for energy conversion, fuel cells and related materials, cardiac imaging and diagnostics, and cardiovascular function and risk factors.

The scientific contributions of Takenaka are reflected in several recent publications. Selected papers include the following:

  • Partial oxidation of methane to formaldehyde over copper-molybdenum complex oxide catalysts, 2021, Catalysis Science & Technology
  • Superior Performance of Copper Phosphate α-Cu2P2O7 Catalysts for Partial Oxidation of Methane into Formaldehyde, 2022, Chemistry Letters
  • Active and durable copper phosphate catalysts modified with metal oxides for methane oxidation with oxygen into formaldehyde, 2023, Catalysis Science & Technology
  • Effect of low-dose administration of carperitide for acute heart failure: the LASCAR-AHF trial, 2024, European Heart Journal Acute Cardiovascular Care
  • Design of Interfaces and Phase Interfaces on Cathode Catalysts for Polymer Electrolyte Fuel Cells, 2020, Chemistry Letters

Frequently publishing in respected venues, Takenaka's work appears multiple times in journals such as the Journal of the American College of Cardiology, Circulation, Catalysis Science & Technology, Chemistry Letters, and ECS Meeting Abstracts.

  • Journal of the American College of Cardiology (7 publications)
  • Circulation (4 publications)
  • Catalysis Science & Technology (3 publications)
  • Chemistry Letters (2 publications)
  • ECS Meeting Abstracts (2 publications)

The collaborative aspect of Takenaka's research is evident through frequent co-authors including Toshihisa Anzai, Toshiyuki Nagai, Kiwamu Kamiya, Yoshifumi Mizuguchi, and Kohei Saiin. The number of coauthored publications with these collaborators ranges from 9 to 18, reflecting sustained research partnerships.

  • Toshihisa Anzai (18 co-authored works)
  • Toshiyuki Nagai (17 co-authored works)
  • Kiwamu Kamiya (12 co-authored works)
  • Yoshifumi Mizuguchi (12 co-authored works)
  • Kohei Saiin (9 co-authored works)

Overall, Sakae Takenaka's interdisciplinary research spans both medical and chemical engineering domains, particularly integrating catalysis studies with cardiovascular medicine. The work encompasses experimental studies on catalysts for methane oxidation, interfaces for fuel cells, and clinical investigations related to acute heart failure, signaling a varied and multifaceted research portfolio.

Best Publications

  • Complete removal of carbon monoxide in hydrogen-rich gas stream through methanation over supported metal catalysts

    Sakae Takenaka;Toru Shimizu;Kiyoshi Otsuka

  • Ni/SiO2 catalyst effective for methane decomposition into hydrogen and carbon nanofiber

    Sakae Takenaka;Shoji Kobayashi;Hitoshi Ogihara;Kiyoshi Otsuka

  • Decomposition of methane over supported-Ni catalysts: effects of the supports on the catalytic lifetime

    Sakae Takenaka;Hitoshi Ogihara;Ichiro Yamanaka;Kiyoshi Otsuka

  • Formation of filamentous carbons over supported Fe catalysts through methane decomposition

    Sakae Takenaka;Michio Serizawa;Kiyoshi Otsuka

  • Methane decomposition into hydrogen and carbon nanofibers over supported Pd–Ni catalysts

    Sakae Takenaka;Yukio Shigeta;Eishi Tanabe;Kiyoshi Otsuka

  • Direct and Continuous Production of Hydrogen Peroxide with 93 % Selectivity Using a Fuel‐Cell System

    Ichiro Yamanaka;Takeshi Onizawa;Sakae Takenaka;Kiyoshi Otsuka

  • Chemical storage of hydrogen by modified iron oxides

    K Otsuka;T Kaburagi;C Yamada;S Takenaka

  • Formation of Carbon Nanofibers and Carbon Nanotubes through Methane Decomposition over Supported Cobalt Catalysts

    Sakae Takenaka;Minoru Ishida;Michio Serizawa;Eishi Tanabe

  • Hydrogen storage and production by redox of iron oxide for polymer electrolyte fuel cell vehicles

    K Otsuka;C Yamada;T Kaburagi;S Takenaka

  • Specific performance of silica-coated Ni catalysts for the partial oxidation of methane to synthesis gas

    Sakae Takenaka;Hiroshi Umebayashi;Eishi Tanabe;Hideki Matsune

  • Structural change of Ni species during the methane decomposition and the subsequent gasification of deposited carbon with CO2 over supported Ni catalysts

    Sakae Takenaka;Emi Kato;Yo Tomikubo;Kiyoshi Otsuka

  • Photo-enhanced reduction of carbon dioxide with hydrogen over Rh/TiO2

    Yoshiumi Kohno;Hiroki Hayashi;Sakae Takenaka;Tsunehiro Tanaka

  • Decomposition of methane over Ni catalysts supported on carbon fibers formed from different hydrocarbons

    Kiyoshi Otsuka;Hitoshi Ogihara;Sakae Takenaka

  • Photocatalytic reaction centers in two-dimensional titanium oxide crystals.

    Shintaro Ida;Namhoon Kim;Namhoon Kim;Elif Ertekin;Elif Ertekin;Sakae Takenaka

  • Structural Change of Ni Species in Ni/SiO2 Catalyst during Decomposition of Methane

    Sakae Takenaka;Hitoshi Ogihara;Kiyoshi Otsuka

  • Methane Decomposition into Hydrogen and Carbon Nanofibers over Supported Pd−Ni Catalysts: Characterization of the Catalysts during the Reaction

    Sakae Takenaka;Yukio Shigeta;Eishi Tanabe;Kiyoshi Otsuka

  • Catalytic Activity of Highly Durable Pt/CNT Catalysts Covered with Hydrophobic Silica Layers for the Oxygen Reduction Reaction in PEFCs

    Sakae Takenaka;Hiroaki Miyamoto;Yutaka Utsunomiya;Hideki Matsune

  • Improvement in the durability of Pt electrocatalysts by coverage with silica layers

    Sakae Takenaka;Hiroshi Matsumori;Keizo Nakagawa;Hideki Matsune

  • Production of hydrogen from methane without CO2-emission mediated by indium oxide and iron oxide

    Kiyoshi Otsuka;Aiko Mito;Sakae Takenaka;Ichiro Yamanaka

  • Formation of highly concentrated hydrogen through methane decomposition over Pd-based alloy catalysts

    Hitoshi Ogihara;Sakae Takenaka;Ichiro Yamanaka;Eishi Tanabe

Frequent Co-Authors

Kiyoshi Otsuka
Kiyoshi Otsuka Tokyo Institute of Technology
Satohiro Yoshida
Satohiro Yoshida Kyoto University
Shintaro Ida
Shintaro Ida Kumamoto University
Atsushi Satsuma
Atsushi Satsuma Kyoto University
Tatsumi Ishihara
Tatsumi Ishihara Kyushu University
Yoji Kobayashi
Yoji Kobayashi King Abdullah University of Science and Technology
Takashi Yamamoto
Takashi Yamamoto Hiroshima University
Kentaro Teramura
Kentaro Teramura Kyoto University
Kenji Kaneko
Kenji Kaneko Kyushu University
Wataru Ueda
Wataru Ueda Kanagawa University

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