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Etsuo Kokufuta

Etsuo Kokufuta

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 48 15330 13822 1205 1094 181 7486

Etsuo Kokufuta publications per year

The chart shows the history of publications by Etsuo Kokufuta between 1973 and 2016, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Etsuo Kokufuta published across 44 years, from 1973 to 2016, averaging 4.1 papers a year. Output peaked at 13 publications in 1999. 2 of the 181 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1973 to 2016. Vertical axis: number of publications, 0 to 13. Peak 13 publications in 1999. 1973: 1 publication 1974: 1 publication 1975: 2 publications 1976: 0 publications 1977: 2 publications 1978: 4 publications 1979: 2 publications 1980: 4 publications 1981: 5 publications 1982: 5 publications 1983: 2 publications 1984: 4 publications 1985: 4 publications 1986: 6 publications 1987: 3 publications 1988: 6 publications 1989: 2 publications 1990: 3 publications 1991: 5 publications 1992: 8 publications 1993: 9 publications 1994: 8 publications 1995: 7 publications 1996: 3 publications 1997: 5 publications 1998: 8 publications 1999: 13 publications 2000: 7 publications 2001: 7 publications 2002: 7 publications 2003: 6 publications 2004: 3 publications 2005: 4 publications 2006: 2 publications 2007: 8 publications 2008: 3 publications 2009: 3 publications 2010: 2 publications 2011: 2 publications 2012: 1 publication 2013: 2 publications 2014: 0 publications 2015: 1 publication 2016: 1 publication
1973 2016

181 publications in total across all disciplines

View publications per year as a table
Etsuo Kokufuta: publications per year, 1973 to 2016
Year Publications
1973 1
1974 1
1975 2
1976 0
1977 2
1978 4
1979 2
1980 4
1981 5
1982 5
1983 2
1984 4
1985 4
1986 6
1987 3
1988 6
1989 2
1990 3
1991 5
1992 8
1993 9
1994 8
1995 7
1996 3
1997 5
1998 8
1999 13
2000 7
2001 7
2002 7
2003 6
2004 3
2005 4
2006 2
2007 8
2008 3
2009 3
2010 2
2011 2
2012 1
2013 2
2014 0
2015 1
2016 1
Total 181
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Etsuo Kokufuta publications per year - data summary

  • Etsuo Kokufuta, a Chemistry scholar from University of Tsukuba, has 181 publications recorded across 44 years, from 1973 to 2016.
  • The oldest publication on record dates to 1973 and the most recent to 2016.
  • The most productive year is 1999, with 13 publications.
  • The least productive years with any output are 1973, 1974, 2012, 2015 and others, with 1 publication each.
  • 2 of the 44 years in the span carry no publications at all (1976 and 2014).
  • The rate of publication averages 4.1 papers per year over the whole span, or 4.3 per year counting only the 42 years with at least one publication.
  • The last 5 years on the chart (2012-2016) hold 5 publications, 3% of the career total.
  • Split into equal eras - 1973-1987: 45 publications (3.0 per year); 1988-2002: 98 publications (6.5 per year); 2003-2016: 38 publications (2.7 per year).
  • Comparing the opening and closing eras, the overall trend of publication is broadly steady.

Etsuo Kokufuta 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 Etsuo Kokufuta 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, 181–200 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: 181 publications — 25th percentile

25% 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
181–200 1,344 181
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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Etsuo Kokufuta 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.
  • Etsuo Kokufuta, a Chemistry scholar from University of Tsukuba, records 181 publications - the 25th percentile of the discipline.
  • 25% of ranked Chemistry scientists score the same or lower than Etsuo Kokufuta, and about 75% score higher.
  • The median of the discipline falls in the 241–260 publications range, and Etsuo Kokufuta 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).

Etsuo Kokufuta 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 Etsuo Kokufuta 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, 48–49 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: 48 D-Index — 16th percentile

16% 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 48
50–51 861
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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Etsuo Kokufuta 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.
  • Etsuo Kokufuta, a Chemistry scholar from University of Tsukuba, records 48 D-Index - the 16th percentile of the discipline.
  • 16% of ranked Chemistry scientists score the same or lower than Etsuo Kokufuta, and about 84% score higher.
  • The median of the discipline falls in the 62–63 D-Index range, and Etsuo Kokufuta 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

Etsuo Kokufuta is affiliated with the University of Tsukuba in Japan. Their academic career is centered around research and scholarship conducted within this institution.

No recent papers, frequent co-authors, or publication venues are listed for Etsuo Kokufuta. Similarly, there is no available data on book publications, main fields of study, subfields, or main topics of their work.

There are no recorded awards associated with Etsuo Kokufuta, and they are currently living.

Best Publications

  • Volume transition in a gel driven by hydrogen bonding

    Franck Ilmain;Toyoichi Tanaka;Etsuo Kokufuta;Etsuo Kokufuta

  • Phase Transitions of Gels

    Toyoichi Tanaka;Masahiko Annaka;Franck Ilmain;Kazuhiro Ishii

  • Effects of surfactants on the phase transition of poly(N-isopropylacrylamide) gel

    Etsuo Kokufuta;Yong Qing Zhang;Toyoichi Tanaka;Akira Mamada

  • Crumpled and collapsed conformation in graphite oxide membranes

    Xin Wen;Carl W. Garland;Terence Hwa;Mehran Kardar

  • In-Phase Synchronization of Chemical and Mechanical Oscillations in Self-Oscillating Gels

    Ryo Yoshida;Masami Tanaka;Satoko Onodera;Tomohiko Yamaguchi

  • Complexation of Proteins with a Strong Polyanion in an Aqueous Salt-free System

    Atsushi Tsuboi;Tsuyoshi Izumi;Mitsuo Hirata;Jiulin Xia

  • Ciliary motion actuator using self-oscillating gel

    O. Tabata;H. Hirasawa;S. Aoki;R. Yoshida

  • Preparation and characterization of thermosensitive polyampholyte nanogels

    Kazuyoshi Ogawa;and Atsushi Nakayama;Etsuo Kokufuta

  • Volume Phase Transition of Polyelectrolyte Gels with Different Charge Distributions

    Etsuo Kokufuta;Benlian Wang;Ryo Yoshida;and Alexei R. Khokhlov

  • Beating polymer gels coupled with a nonlinear chemical reaction

    Ryo Yoshida;Etsuo Kokufuta;Tomohiko Yamaguchi

  • Preparation of Thermosensitive Submicrometer Gel Particles with Anionic and Cationic Charges

    Shoji Ito;Kazuyoshi Ogawa;Hironori Suzuki;Benlian Wang

  • Interpenetrating-polymer network phase-transition gels

    Toyoichi Tanaka;Franck Ilmain;Etsuo Kokufuta;Masahiko Annaka

  • Aspects of the Belousov−Zhabotinsky Reaction in Polymer Gels

    Ryo Yoshida;Satoko Onodera;and Tomohiko Yamaguchi;Etsuo Kokufuta

  • Formation of an Intrapolymer Complex from Human Serum Albumin and Poly(ethylene glycol)

    Shinji Azegami;Atsushi Tsuboi;Tsuyoshi Izumi;Mitsuo Hirata

  • Conformation of graphite oxide membranes in solution.

    Terence Hwa;Etsuo Kokufuta;Toyoichi Tanaka

  • Newly designed hydrogel with both sensitive thermoresponse and biodegradability

    Takatsune Yoshida;Takao Aoyagi;Etsuo Kokufuta;Teruo Okano

  • Functional immobilized biocatalysts

    Etsuo Kokufuta

  • Small angle neutron scattering studies on structural inhomogeneities in polymer gels: irradiation cross-linked gels vs chemically cross-linked gels

    Tomohisa Norisuye;Naoki Masui;Yusuke Kida;Daigo Ikuta

  • Chemical waves in self-oscillating gels

    Kenji Miyakawa;Fumitaka Sakamoto;Ryo Yoshida;Etsuo Kokufuta

  • Enzyme-Regulated Microgel Collapse for Controlled Membrane Permeability

    Kazuyoshi Ogawa;and Benlian Wang;Etsuo Kokufuta

  • Biochemically controlled thermal phase transition of gels

    Etsuo Kokufuta;Toyoichi Tanaka

Frequent Co-Authors

Ryo Yoshida
Ryo Yoshida University of Tokyo
Paul L. Dubin
Paul L. Dubin University of Massachusetts Amherst
Tsuneo Okubo
Tsuneo Okubo Gifu University
Hideo Tanaka
Hideo Tanaka University of Tsukuba
Terence Hwa
Terence Hwa University of California, San Diego
Mitsuhiro Shibayama
Mitsuhiro Shibayama Comprehensive Research Organization for Science and Society
Curtis W. Frank
Curtis W. Frank Stanford University
Takao Aoyagi
Takao Aoyagi Nihon University

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