World's Best Scientists 2026 revealed!
Kiyoshi Okuda

Kiyoshi Okuda

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Animal Science and Veterinary 38 1408 1302 12 11 190 5279

Kiyoshi Okuda publications per year

The chart shows the history of publications by Kiyoshi Okuda between 1962 and 2022, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Kiyoshi Okuda published across 61 years, from 1962 to 2022, averaging 4.9 papers a year. Output peaked at 21 publications in 2009. 3 of the 298 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1962 to 2022. Vertical axis: number of publications, 0 to 21. Peak 21 publications in 2009. 1962: 1 publication 1963: 2 publications 1964: 1 publication 1965: 0 publications 1966: 0 publications 1967: 0 publications 1968: 1 publication 1969: 0 publications 1970: 1 publication 1971: 0 publications 1972: 1 publication 1973: 0 publications 1974: 1 publication 1975: 0 publications 1976: 0 publications 1977: 1 publication 1978: 1 publication 1979: 2 publications 1980: 3 publications 1981: 4 publications 1982: 5 publications 1983: 4 publications 1984: 4 publications 1985: 6 publications 1986: 5 publications 1987: 10 publications 1988: 2 publications 1989: 7 publications 1990: 3 publications 1991: 5 publications 1992: 3 publications 1993: 5 publications 1994: 6 publications 1995: 1 publication 1996: 5 publications 1997: 4 publications 1998: 3 publications 1999: 3 publications 2000: 11 publications 2001: 4 publications 2002: 5 publications 2003: 8 publications 2004: 8 publications 2005: 4 publications 2006: 8 publications 2007: 15 publications 2008: 12 publications 2009: 21 publications 2010: 16 publications 2011: 2 publications 2012: 18 publications 2013: 13 publications 2014: 15 publications 2015: 10 publications 2016: 13 publications 2017: 5 publications 2018: 3 publications 2019: 1 publication 2020: 3 publications 2021: 2 publications 2022: 1 publication
1962 2022

298 publications in total across all disciplines

View publications per year as a table
Kiyoshi Okuda: publications per year, 1962 to 2022
Year Publications
1962 1
1963 2
1964 1
1965 0
1966 0
1967 0
1968 1
1969 0
1970 1
1971 0
1972 1
1973 0
1974 1
1975 0
1976 0
1977 1
1978 1
1979 2
1980 3
1981 4
1982 5
1983 4
1984 4
1985 6
1986 5
1987 10
1988 2
1989 7
1990 3
1991 5
1992 3
1993 5
1994 6
1995 1
1996 5
1997 4
1998 3
1999 3
2000 11
2001 4
2002 5
2003 8
2004 8
2005 4
2006 8
2007 15
2008 12
2009 21
2010 16
2011 2
2012 18
2013 13
2014 15
2015 10
2016 13
2017 5
2018 3
2019 1
2020 3
2021 2
2022 1
Total 298
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Kiyoshi Okuda publications per year - data summary

  • Kiyoshi Okuda, a Animal Science and Veterinary scholar from Okayama University, has 298 publications recorded across 61 years, from 1962 to 2022.
  • The oldest publication on record dates to 1962 and the most recent to 2022.
  • The most productive year is 2009, with 21 publications.
  • The least productive years with any output are 1962, 1964, 1968, 1970 and others, with 1 publication each.
  • 8 of the 61 years in the span carry no publications at all (1965, 1966, 1967, 1969 and others).
  • The rate of publication averages 4.9 papers per year over the whole span, or 5.6 per year counting only the 53 years with at least one publication.
  • The last 5 years on the chart (2018-2022) hold 10 publications, 3% of the career total.
  • Split into equal eras - 1962-1982: 24 publications (1.1 per year); 1983-2003: 104 publications (5.0 per year); 2004-2022: 170 publications (8.9 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Kiyoshi Okuda publication distribution in Animal Science and Veterinary in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Animal Science and Veterinary in 2026. The highlighted bar marks where Kiyoshi Okuda sits on this spectrum.

No. of scientists
25 50 75 100
Bar chart with 84 bars. Horizontal axis: publications, 29–33 to 442+. Vertical axis: number of scientists, 0 to 109. Most scientists, 109, have 119–123 publications. The last bar groups every scientist with 442 publications or more. The highlighted bar, 189–193 publications, is where this scientist sits. 29–33 publications: 1 scientist 34–38 publications: 6 scientists 39–43 publications: 17 scientists 44–48 publications: 23 scientists 49–53 publications: 28 scientists 54–58 publications: 44 scientists 59–63 publications: 66 scientists 64–68 publications: 75 scientists 69–73 publications: 71 scientists 74–78 publications: 85 scientists 79–83 publications: 108 scientists 84–88 publications: 105 scientists 89–93 publications: 84 scientists 94–98 publications: 103 scientists 99–103 publications: 97 scientists 104–108 publications: 95 scientists 109–113 publications: 89 scientists 114–118 publications: 88 scientists 119–123 publications: 109 scientists 124–128 publications: 93 scientists 129–133 publications: 89 scientists 134–138 publications: 95 scientists 139–143 publications: 92 scientists 144–148 publications: 80 scientists 149–153 publications: 75 scientists 154–158 publications: 74 scientists 159–163 publications: 67 scientists 164–168 publications: 53 scientists 169–173 publications: 62 scientists 174–178 publications: 63 scientists 179–183 publications: 50 scientists 184–188 publications: 55 scientists 189–193 publications: 50 scientists 194–198 publications: 27 scientists 199–203 publications: 44 scientists 204–208 publications: 31 scientists 209–213 publications: 28 scientists 214–218 publications: 38 scientists 219–223 publications: 33 scientists 224–228 publications: 36 scientists 229–233 publications: 29 scientists 234–238 publications: 35 scientists 239–243 publications: 23 scientists 244–248 publications: 24 scientists 249–253 publications: 29 scientists 254–258 publications: 28 scientists 259–263 publications: 21 scientists 264–268 publications: 25 scientists 269–273 publications: 11 scientists 274–278 publications: 18 scientists 279–283 publications: 13 scientists 284–288 publications: 18 scientists 289–293 publications: 10 scientists 294–298 publications: 12 scientists 299–303 publications: 11 scientists 304–308 publications: 15 scientists 309–313 publications: 14 scientists 314–318 publications: 14 scientists 319–323 publications: 8 scientists 324–328 publications: 8 scientists 329–333 publications: 13 scientists 334–338 publications: 14 scientists 339–343 publications: 13 scientists 344–348 publications: 10 scientists 349–353 publications: 11 scientists 354–358 publications: 5 scientists 359–363 publications: 8 scientists 364–368 publications: 8 scientists 369–373 publications: 6 scientists 374–378 publications: 7 scientists 379–383 publications: 8 scientists 384–388 publications: 3 scientists 389–393 publications: 4 scientists 394–398 publications: 5 scientists 399–403 publications: 8 scientists 404–408 publications: 5 scientists 409–413 publications: 4 scientists 414–418 publications: 3 scientists 419–423 publications: 8 scientists 424–428 publications: 5 scientists 429–433 publications: 3 scientists 434–438 publications: 5 scientists 439–441 publications: 5 scientists 442+ publications: 99 scientists
29–33 publications 442+

This scientist: 190 publications — 72nd percentile

72% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 442 publications or more.

View publications distribution as a table
Number of Animal Science and Veterinary scientists by publication count, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
Publications Scientists This scientist
29–33 1
34–38 6
39–43 17
44–48 23
49–53 28
54–58 44
59–63 66
64–68 75
69–73 71
74–78 85
79–83 108
84–88 105
89–93 84
94–98 103
99–103 97
104–108 95
109–113 89
114–118 88
119–123 109
124–128 93
129–133 89
134–138 95
139–143 92
144–148 80
149–153 75
154–158 74
159–163 67
164–168 53
169–173 62
174–178 63
179–183 50
184–188 55
189–193 50 190
194–198 27
199–203 44
204–208 31
209–213 28
214–218 38
219–223 33
224–228 36
229–233 29
234–238 35
239–243 23
244–248 24
249–253 29
254–258 28
259–263 21
264–268 25
269–273 11
274–278 18
279–283 13
284–288 18
289–293 10
294–298 12
299–303 11
304–308 15
309–313 14
314–318 14
319–323 8
324–328 8
329–333 13
334–338 14
339–343 13
344–348 10
349–353 11
354–358 5
359–363 8
364–368 8
369–373 6
374–378 7
379–383 8
384–388 3
389–393 4
394–398 5
399–403 8
404–408 5
409–413 4
414–418 3
419–423 8
424–428 5
429–433 3
434–438 5
439–441 5
442+ 99
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Kiyoshi Okuda publication distribution in Animal Science and Veterinary in 2026 - data summary

  • The chart plots the publication count of all 3,155 Animal Science and Veterinary scientists ranked by Research.com in 2026, grouped into 84 ranges running from 29–33 to 442+ publications.
  • Kiyoshi Okuda, a Animal Science and Veterinary scholar from Okayama University, records 190 publications - the 72nd percentile of the discipline.
  • 72% of ranked Animal Science and Veterinary scientists score the same or lower than Kiyoshi Okuda, and about 28% score higher.
  • The median of the discipline falls in the 139–143 publications range, and Kiyoshi Okuda ranks above the median.
  • The most crowded range is 119–123 publications, holding 109 scientists (3% of the field).
  • 47% of the field sits in the lowest quarter of the value range (up to 129–133 publications), so the distribution leans towards the lower end of the scale.
  • The final bar has no upper bound: it groups every scientist with 442 publications or more, 99 scientists in all (3% of the field).

Kiyoshi Okuda D-index placement in Animal Science and Veterinary in 2026

The chart shows the D-index (discipline H-index) distribution of Animal Science and Veterinary scientists ranked by Research.com in 2026. The highlighted bar marks where Kiyoshi Okuda sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 58 bars. Horizontal axis: D-Index, 20 to 77+. Vertical axis: number of scientists, 0 to 158. Most scientists, 158, have 31 D-Index. The last bar groups every scientist with 77 D-Index or more. The highlighted bar, 38 D-Index, is where this scientist sits. 20 D-Index: 5 scientists 21 D-Index: 22 scientists 22 D-Index: 31 scientists 23 D-Index: 44 scientists 24 D-Index: 53 scientists 25 D-Index: 66 scientists 26 D-Index: 80 scientists 27 D-Index: 101 scientists 28 D-Index: 106 scientists 29 D-Index: 116 scientists 30 D-Index: 154 scientists 31 D-Index: 158 scientists 32 D-Index: 143 scientists 33 D-Index: 137 scientists 34 D-Index: 126 scientists 35 D-Index: 134 scientists 36 D-Index: 112 scientists 37 D-Index: 115 scientists 38 D-Index: 105 scientists 39 D-Index: 111 scientists 40 D-Index: 107 scientists 41 D-Index: 87 scientists 42 D-Index: 74 scientists 43 D-Index: 62 scientists 44 D-Index: 61 scientists 45 D-Index: 41 scientists 46 D-Index: 51 scientists 47 D-Index: 43 scientists 48 D-Index: 28 scientists 49 D-Index: 47 scientists 50 D-Index: 40 scientists 51 D-Index: 34 scientists 52 D-Index: 33 scientists 53 D-Index: 43 scientists 54 D-Index: 16 scientists 55 D-Index: 32 scientists 56 D-Index: 21 scientists 57 D-Index: 18 scientists 58 D-Index: 28 scientists 59 D-Index: 33 scientists 60 D-Index: 17 scientists 61 D-Index: 21 scientists 62 D-Index: 18 scientists 63 D-Index: 21 scientists 64 D-Index: 9 scientists 65 D-Index: 20 scientists 66 D-Index: 11 scientists 67 D-Index: 16 scientists 68 D-Index: 12 scientists 69 D-Index: 17 scientists 70 D-Index: 13 scientists 71 D-Index: 15 scientists 72 D-Index: 11 scientists 73 D-Index: 11 scientists 74 D-Index: 14 scientists 75 D-Index: 5 scientists 76 D-Index: 6 scientists 77+ D-Index: 100 scientists
20 D-Index 77+

This scientist: 38 D-Index — 57th percentile

57% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 77 D-Index or more.

View D-Index distribution as a table
Number of Animal Science and Veterinary scientists by D-index, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
D-Index Scientists This scientist
20 5
21 22
22 31
23 44
24 53
25 66
26 80
27 101
28 106
29 116
30 154
31 158
32 143
33 137
34 126
35 134
36 112
37 115
38 105 38
39 111
40 107
41 87
42 74
43 62
44 61
45 41
46 51
47 43
48 28
49 47
50 40
51 34
52 33
53 43
54 16
55 32
56 21
57 18
58 28
59 33
60 17
61 21
62 18
63 21
64 9
65 20
66 11
67 16
68 12
69 17
70 13
71 15
72 11
73 11
74 14
75 5
76 6
77+ 100
Download as CSV

Kiyoshi Okuda D-index placement in Animal Science and Veterinary in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 3,155 Animal Science and Veterinary scientists ranked by Research.com in 2026, grouped into 58 ranges running from 20 to 77+ D-Index.
  • Kiyoshi Okuda, a Animal Science and Veterinary scholar from Okayama University, records 38 D-Index - the 57th percentile of the discipline.
  • 57% of ranked Animal Science and Veterinary scientists score the same or lower than Kiyoshi Okuda, and about 43% score higher.
  • The median of the discipline falls in the 36 D-Index range, and Kiyoshi Okuda ranks above the median.
  • The most crowded range is 31 D-Index, holding 158 scientists (5% of the field).
  • 43% of the field sits in the lowest quarter of the value range (up to 34 D-Index), so the distribution leans towards the lower end of the scale.
  • The final bar has no upper bound: it groups every scientist with 77 D-Index or more, 100 scientists in all (3% of the field).

Best Publications

  • Is Tumor Necrosis Factor α a Trigger for the Initiation of Endometrial Prostaglandin F2α Release at Luteolysis in Cattle

    Unknown

  • Production of Prostaglandin F2α by Cultured Bovine Endometrial Cells in Response to Tumor Necrosis Factor α: Cell Type Specificity and Intracellular Mechanisms

    Unknown

  • Evidence for oxytocin receptors in cultured bovine luteal cells.

    Kiyoshi Okuda;Akio Miyamoto;Helga Sauerwein;Florian J. Schweigert

  • Progesterone Is a Suppressor of Apoptosis in Bovine Luteal Cells

    Unknown

  • Tumor Necrosis Factor-α and Its Receptor in Bovine Corpus Luteum Throughout the Estrous Cycle

    Ryosuke Sakumoto;Bajram Berisha;Noritoshi Kawate;Dieter Schams

  • Different actions of noradrenaline and nitric oxide on the output of prostaglandins and progesterone in cultured bovine luteal cells.

    Unknown

  • Sensitivity of Bovine Corpora Lutea to Prostaglandin F2α Is Dependent on Progesterone, Oxytocin, and Prostaglandins

    Unknown

  • Roles of Tumor Necrosis Factor-α of the Estrous Cycle in Cattle: An In Vivo Study

    Unknown

  • Species-related differences in the mechanism of apoptosis during structural luteolysis.

    Norihiro Sugino;Kiyoshi Okuda

  • Influence of Nitric Oxide and Noradrenaline on Prostaglandin F2α-Induced Oxytocin Secretion and Intracellular Calcium Mobilization in Cultured Bovine Luteal Cells

    Unknown

  • Role of tumor necrosis factor-α and nitric oxide in luteolysis in cattle

    Unknown

  • Hypoxia is Important for Establishing Vascularization During Corpus Luteum Formation in Cattle

    Unknown

  • Multiple roles of TNF super family members in corpus luteum function

    Unknown

  • Regulation of Angiotensin II Production and Angiotensin Receptors in Microvascular Endothelial Cells from Bovine Corpus Luteum

    Kanako Hayashi;Akio Miyamoto;Akio Miyamoto;Bajram Berisha;Michaela R. Kosmann

  • Cortisol Is a Suppressor of Apoptosis in Bovine Corpus Luteum

    Unknown

  • Nitric oxide induces apoptosis in bovine luteal cells.

    Unknown

  • Functional oxytocin receptors in bovine granulosa cells.

    Kiyoshi Okuda;Yoshihisa Uenoyama;Yasuko Fujita;Yasuko Fujita;Kosuke Iga

  • The influence of tumor necrosis factor α (TNF) on the secretory function of bovine corpus luteum: TNF and its receptors expression during the estrous cycle

    Unknown

  • Lysophosphatic acid modulates prostaglandin secretion in the bovine uterus

    Unknown

  • Expression of mRNAs for interleukin-4, interleukin-6 and their receptors in porcine corpus luteum during the estrous cycle

    Unknown

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Related Online Degrees & Career Pathways

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For those seeking to support family dynamics involving pet ownership or companion animal therapy, a marriage and family masters programs can be instrumental. These programs help develop skills to navigate complex interpersonal relationships, enriching animal-assisted therapy initiatives.

Finally, to achieve leadership roles in counseling education, professionals may consider an online phd counselor education and supervision that allows for flexible study schedules and career advancement. This credential supports the development of future educators and supervisors in both clinical and academic settings.

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