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Morio Ikehara

Morio Ikehara

Osaka University
Japan

D-Index & Metrics

Discipline name D-Index World Ranking National Ranking Publications Citations
Chemistry 56 11540 856 519 12354

Morio Ikehara publications per year

The chart shows the history of publications by Morio Ikehara between 1950 and 1997, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Morio Ikehara published across 48 years, from 1950 to 1997, averaging 10.9 papers a year. Output peaked at 25 publications in 1981. 2 of the 521 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1950 to 1997. Vertical axis: number of publications, 0 to 25. Peak 25 publications in 1981. 1950: 1 publication 1951: 2 publications 1952: 0 publications 1953: 1 publication 1954: 0 publications 1955: 2 publications 1956: 0 publications 1957: 0 publications 1958: 0 publications 1959: 2 publications 1960: 6 publications 1961: 4 publications 1962: 9 publications 1963: 13 publications 1964: 7 publications 1965: 8 publications 1966: 5 publications 1967: 9 publications 1968: 9 publications 1969: 7 publications 1970: 20 publications 1971: 12 publications 1972: 21 publications 1973: 13 publications 1974: 24 publications 1975: 15 publications 1976: 19 publications 1977: 22 publications 1978: 23 publications 1979: 24 publications 1980: 18 publications 1981: 25 publications 1982: 25 publications 1983: 16 publications 1984: 19 publications 1985: 15 publications 1986: 20 publications 1987: 23 publications 1988: 17 publications 1989: 10 publications 1990: 10 publications 1991: 18 publications 1992: 10 publications 1993: 5 publications 1994: 8 publications 1995: 2 publications 1996: 1 publication 1997: 1 publication
1950 1997

521 publications in total across all disciplines

View publications per year as a table
Morio Ikehara: publications per year, 1950 to 1997
Year Publications
1950 1
1951 2
1952 0
1953 1
1954 0
1955 2
1956 0
1957 0
1958 0
1959 2
1960 6
1961 4
1962 9
1963 13
1964 7
1965 8
1966 5
1967 9
1968 9
1969 7
1970 20
1971 12
1972 21
1973 13
1974 24
1975 15
1976 19
1977 22
1978 23
1979 24
1980 18
1981 25
1982 25
1983 16
1984 19
1985 15
1986 20
1987 23
1988 17
1989 10
1990 10
1991 18
1992 10
1993 5
1994 8
1995 2
1996 1
1997 1
Total 521
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Morio Ikehara 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 Morio Ikehara 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, 501–520 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: 519 publications — 90th percentile

90% 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
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
501–520 201 519
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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Morio Ikehara 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 Morio Ikehara 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, 56–57 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: 56 D-Index — 36th percentile

36% 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
52–53 872
54–55 933
56–57 1,051 56
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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Overview

Morio Ikehara is affiliated with Osaka University in Japan. Their academic career is linked with this institution, where they conduct their research activities.

No specific information is available regarding their recent publications, making it unclear which topics or fields they have recently contributed to in detail. There is also no data on frequent co-authors or collaborative networks connected to their work.

Details about the venues where Morio Ikehara frequently publishes are not provided. This limits insight into their preferred journals or conferences and the scope of their dissemination channels.

Information about books published by Morio Ikehara is also not recorded, thus their involvement in book authorship or editorial roles cannot be confirmed.

Their main fields of study, subfields, and primary research topics are unspecified, which restricts an overview of the scientific areas they focus on or specialize in.

There are no recorded awards or recognitions associated with Morio Ikehara in the available data, leaving their accolade history unknown.

Known facts confirm that Morio Ikehara is currently living. The scientist's professional identity is maintained without gender designation, ensuring a neutral description.

Best Publications

  • An alternative approach to deoxyoligonucleotides as hybridization probes by insertion of deoxyinosine at ambiguous codon positions.

    E Ohtsuka;S Matsuki;M Ikehara;Y Takahashi

  • Three-dimensional structure of ribonuclease H from E. coli

    K. Katayanagi;M. Miyagawa;M. Matsushima;M. Ishikawa

  • Molecular cloning of the human cholecystokinin gene by use of a synthetic probe containing deoxyinosine

    Yoosuke Takahashi;Kikuya Kato;Yoshihide Hayashizaki;Toshiaki Wakabayashi

  • NMR studies of a DNA containing 8-hydroxydeoxyguanosine.

    Yasushi Oda;Seichi Uesugi;Morio Ikehara;Susumu Nishimura

  • How does RNase H recognize a DNA.RNA hybrid

    H Nakamura;Y Oda;S Iwai;H Inoue

  • Structural details of ribonuclease H from Escherichia coli as refined to an atomic resolution.

    K. Katayanagi;M. Miyagawa;M. Matsushima;M. Ishikawa

  • Identification of the amino acid residues involved in an active site of Escherichia coli ribonuclease H by site-directed mutagenesis.

    S Kanaya;A Kohara;Y Miura;A Sekiguchi

  • Studies on the conformation of purine nucleosides and their 5'-phosphates.

    Morio Ikehara;Seiichi Uesugi;Katsumi Yoshida

  • CARBON-13 MAGNETIC RESONANCE SPECTRA OF 8-SUBSTITUTED PURINE NUCLEOSIDES. CHARACTERISTIC SHIFTS FOR THE SYN CONFORMATION

    S. Uesugi;M. Ikehara

  • Amino acid sequence of mammalian elongation factor 2 deduced from the cDNA sequence: homology with GTP-binding proteins.

    Kenji Kohno;Tsuyoshi Uchida;Hiroaki Ohkubo;Shigetada Nakanishi

  • X-ray structure of T4 endonuclease V: an excision repair enzyme specific for a pyrimidine dimer.

    K Morikawa;O Matsumoto;M Tsujimoto;K Katayanagi

  • Importance of the positive charge cluster in Escherichia coli ribonuclease HI for the effective binding of the substrate.

    Shigenori Kanaya;Chieko Katsuda-Nakai;Morio Ikehara

  • A linear relationship between electronegativity of 2′-substituents and conformation of adenine nucleosides

    Seiichi Uesugi;Hiroko Miki;Morio Ikehara;Hideo Iwahashi

  • Molecular cloning and the complete nucleotide sequence of cDNA to mRNA for S-100 protein of rat brain

    Ryozo Kuwano;Hiroshi Usui;Toshinaga Maeda;Toshikazu Fukui

  • Stabilization of Escherichia coli ribonuclease H by introduction of an artificial disulfide bond.

    S Kanaya;C Katsuda;S Kimura;T Nakai

  • Synthesis of a gene for human growth hormone and its expression in Escherichia coli

    M Ikehara;E Ohtsuka;T Tokunaga;Y Taniyama

  • Two histidine residues are essential for ribonuclease T1 activity as is the case for ribonuclease A.

    Satoshi Nishikawa;Hiroshi Morioka;Hyo J. Kim;Kayoko Fuchimura

  • Recent developments in the chemical synthesis of polynucleotides.

    Eiko Ohtsuka;Morio Ikehara;Dieter Söll

  • Design and creation of a Ca2+ binding site in human lysozyme to enhance structural stability.

    Ryota Kuroki;Yoshio Taniyama;Chisako Seko;Haruki Nakamura

  • Studies of Nucleosides and Nucleotides. XXXVIII. Synthesis of 8-Bromoadenosine Nucleotides

    Morio Ikehara;Seiichi Uesugi

Frequent Co-Authors

Eiko Ohtsuka
Eiko Ohtsuka Hokkaido University
Shigenori Kanaya
Shigenori Kanaya Osaka University
Toshio Hakoshima
Toshio Hakoshima Nara Institute of Science and Technology
Shigenori Iwai
Shigenori Iwai Osaka University
Yoshimasa Kyogoku
Yoshimasa Kyogoku Osaka University
Haruki Nakamura
Haruki Nakamura Osaka University
Kosuke Morikawa
Kosuke Morikawa Kyoto University
Paul O. P. Ts'o
Paul O. P. Ts'o Johns Hopkins University
Susumu Nishimura
Susumu Nishimura University of Tsukuba
Akira Hasegawa
Akira Hasegawa Osaka University

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Best Scientists Citing Morio Ikehara

Shigenori Kanaya

Shigenori Kanaya

Osaka University

Publications: 62

Eiko Ohtsuka

Eiko Ohtsuka

Hokkaido University

Publications: 48

Frank Seela

Frank Seela

University of Münster

Publications: 34

Wolfgang Pfleiderer

Wolfgang Pfleiderer

University of Konstanz

Publications: 30

Haruki Nakamura

Haruki Nakamura

Osaka University

Publications: 30

Susan Marqusee

Susan Marqusee

University of California, Berkeley

Publications: 29

Hiroyuki Kamiya

Hiroyuki Kamiya

Hiroshima University

Publications: 28

Kazufumi Takano

Kazufumi Takano

Kyoto Prefectural University

Publications: 28

Shigeyuki Yokoyama

Shigeyuki Yokoyama

RIKEN

Publications: 27

Phillip Dan Cook

Phillip Dan Cook

Ionis Pharmaceuticals (United States)

Publications: 26

Susumu Nishimura

Susumu Nishimura

University of Tsukuba

Publications: 26

R. Stephen Lloyd

R. Stephen Lloyd

Oregon Health & Science University

Publications: 22

Stanley T. Crooke

Stanley T. Crooke

Ionis Pharmaceuticals (United States)

Publications: 20

David Shugar

David Shugar

Polish Academy of Sciences

Publications: 19

Wolfram Saenger

Wolfram Saenger

Freie Universität Berlin

Publications: 19

Hiroshi Kasai

Hiroshi Kasai

University of Occupational and Environmental Health Japan

Publications: 19

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