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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 62 9026 8182 633 585 268 11077

Yoshihito Shirai publications per year

The chart shows the history of publications by Yoshihito Shirai between 1979 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Yoshihito Shirai published across 48 years, from 1979 to 2026, averaging 7.3 papers a year. Output peaked at 28 publications in 2009. 5 of the 349 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1979 to 2026. Vertical axis: number of publications, 0 to 28. Peak 28 publications in 2009. 1979: 1 publication 1980: 0 publications 1981: 1 publication 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 1 publication 1986: 1 publication 1987: 7 publications 1988: 9 publications 1989: 5 publications 1990: 2 publications 1991: 2 publications 1992: 5 publications 1993: 4 publications 1994: 5 publications 1995: 1 publication 1996: 2 publications 1997: 6 publications 1998: 3 publications 1999: 5 publications 2000: 3 publications 2001: 4 publications 2002: 4 publications 2003: 10 publications 2004: 14 publications 2005: 11 publications 2006: 9 publications 2007: 7 publications 2008: 14 publications 2009: 28 publications 2010: 23 publications 2011: 11 publications 2012: 22 publications 2013: 16 publications 2014: 14 publications 2015: 15 publications 2016: 13 publications 2017: 15 publications 2018: 9 publications 2019: 18 publications 2020: 7 publications 2021: 8 publications 2022: 5 publications 2023: 0 publications 2024: 4 publications 2025: 3 publications 2026: 2 publications
1979 2026

349 publications in total across all disciplines

View publications per year as a table
Yoshihito Shirai: publications per year, 1979 to 2026
Year Publications
1979 1
1980 0
1981 1
1982 0
1983 0
1984 0
1985 1
1986 1
1987 7
1988 9
1989 5
1990 2
1991 2
1992 5
1993 4
1994 5
1995 1
1996 2
1997 6
1998 3
1999 5
2000 3
2001 4
2002 4
2003 10
2004 14
2005 11
2006 9
2007 7
2008 14
2009 28
2010 23
2011 11
2012 22
2013 16
2014 14
2015 15
2016 13
2017 15
2018 9
2019 18
2020 7
2021 8
2022 5
2023 0
2024 4
2025 3
2026 2
Total 349
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Yoshihito Shirai 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 Yoshihito Shirai 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, 261–280 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: 268 publications — 55th percentile

55% 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
261–280 979 268
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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Yoshihito Shirai 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 Yoshihito Shirai 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, 62–63 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: 62 D-Index — 52nd percentile

52% 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
58–59 930
60–61 882
62–63 834 62
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

Yoshihito Shirai is affiliated with Kyushu Institute of Technology in Japan. Their research spans across the fields of Engineering and Environmental Science, with a substantial focus on Biomedical Engineering, Water Science and Technology, Industrial and Manufacturing Engineering, Molecular Biology, and Soil Science.

The scientist's main research topics include:

  • Biofuel production and bioconversion
  • Adsorption and biosorption for pollutant removal
  • Biodiesel Production and Applications
  • Thermochemical Biomass Conversion Processes
  • Composting and Vermicomposting Techniques
  • Oil Palm Production and Sustainability
  • Lignin and Wood Chemistry

Yoshihito Shirai has published frequently in various scientific venues. Notable publication venues include:

  • Environmental Pollution
  • Journal of Cleaner Production
  • Environmental Science and Pollution Research
  • Scientific Reports
  • Biomass and Bioenergy

Recent publications by Shirai and co-authors cover topics related to biochar production, adsorption mechanisms, and biodiesel production. Selected papers are:

  • "Adsorption mechanism and effectiveness of phenol and tannic acid removal by biochar produced from oil palm frond using steam pyrolysis" (2020) published in Environmental Pollution
  • "Effect of oil palm biomass cellulosic content on nanopore structure and adsorption capacity of biochar" (2021) published in Bioresource Technology
  • "Net energy and techno-economic assessment of biodiesel production from waste cooking oil using a semi-industrial plant: A Malaysia perspective" (2020) published in Sustainable Energy Technologies and Assessments
  • "Enhancement of Agro-Industrial Waste Composting Process via the Microbial Inoculation: A Brief Review" (2022) published in Agronomy
  • "Production of biochar from oil palm frond by steam pyrolysis for removal of residual contaminants in palm oil mill effluent final discharge" (2020) published in Journal of Cleaner Production

Frequent collaborators in Yoshihito Shirai's research include Mohd Ali Hassan, Mohd Rafein Zakaria, Mohd Zulkhairi Mohd Yusoff, and Mohammed Abdillah Ahmad Farid.

Best Publications

  • Biohydrogen production from biomass and industrial wastes by dark fermentation

    Mei Ling Chong;Vikineswary Sabaratnam;Yoshihito Shirai;Mohd Ali Hassan

  • Baseline study of methane emission from anaerobic ponds of palm oil mill effluent treatment.

    Shahrakbah Yacob;Mohd Ali Hassan;Yoshihito Shirai;Minato Wakisaka

  • Thermal degradation behaviour of poly(lactic acid) stereocomplex

    Yujiang Fan;Yujiang Fan;Haruo Nishida;Yoshihito Shirai;Yutaka Tokiwa

  • Effect of tin on poly(L-lactic acid) pyrolysis

    Haruo Nishida;Tomokazu Mori;Tomokazu Mori;Shinya Hoshihara;Yujiang Fan;Yujiang Fan

  • Biohydrogen production by Clostridium butyricum EB6 from palm oil mill effluent

    Mei Ling Chong;Raha Abdul Rahim;Yoshihito Shirai;Mohd Ali Hassan

  • Thermal degradation of poly(L-lactide): effect of alkali earth metal oxides for selective L, L-lactide formation

    Yujiang Fan;Yujiang Fan;Haruo Nishida;Tomokazu Mori;Tomokazu Mori;Yoshihito Shirai

  • Importance of the methanogenic archaea populations in anaerobic wastewater treatments

    Meisam Tabatabaei;Raha Abdul Rahim;Norhani Abdullah;André Denis G. Wright

  • Co-composting of empty fruit bunches and partially treated palm oil mill effluents in pilot scale.

    A. S. Baharuddin;M. Wakisaka;Y. Shirai;S. Abd-Aziz

  • Start-up operation of semi-commercial closed anaerobic digester for palm oil mill effluent treatment

    Shahrakbah Yacob;Shahrakbah Yacob;Yoshihito Shirai;Mohd Ali Hassan;Minato Wakisaka

  • Turning waste to wealth-biodegradable plastics polyhydroxyalkanoates from palm oil mill effluent – a Malaysian perspective

    Tabassum Mumtaz;Tabassum Mumtaz;Noor Amalina Yahaya;Suraini Abd-Aziz;Nor’Aini Abdul Rahman

  • Enzymatic hydrolysis of food waste and ethanol fermentation

    Hee Cheon Moon;Il Seok Song;Jong Chan Kim;Yoshihito Shirai

  • Pyrolysis kinetics of poly(l-lactide) with carboxyl and calcium salt end structures

    Yujiang Fan;Yujiang Fan;Haruo Nishida;Shinya Hoshihara;Yoshihito Shirai

  • Renewable sugars from oil palm frond juice as an alternative novel fermentation feedstock for value-added products

    Mior Ahmad Khushairi Mohd Zahari;Mohd Rafein Zakaria;Hidayah Ariffin;Mohd Noriznan Mokhtar

  • Making plastics from garbage : a novel process for poly-L-lactate production from municipal food waste

    Kenji Sakai;Masayuki Taniguchi;Shigenobu Miura;Hitomi Ohara

  • Modification of oil palm mesocarp fiber characteristics using superheated steam treatment.

    Noor Ida Amalina Ahamad Nordin;Hidayah Ariffin;Yoshito Andou;Mohd Ali Hassan

  • Determination of multiple thermal degradation mechanisms of poly(3-hydroxybutyrate)

    Hidayah Ariffin;Hidayah Ariffin;Haruo Nishida;Yoshihito Shirai;Mohd Ali Hassan

  • Sustainable production of polyhydroxyalkanoates from renewable oil-palm biomass.

    Mohd Ali Hassan;Lian-Ngit Yee;Phang Lai Yee;Hidayah Ariffin

  • Thermal stability of poly (L-lactide): influence of end protection by acetyl group

    Yujiang Fan;Haruo Nishida;Yoshihito Shirai;Takeshi Endo

  • Improved economic viability of integrated biogas energy and compost production for sustainable palm oil mill management.

    Tatsuya Yoshizaki;Yoshihito Shirai;Mohd Ali Hassan;Azhari Samsu Baharuddin

  • Effect of steam pretreatment on oil palm empty fruit bunch for the production of sugars

    Saleha Shamsudin;Saleha Shamsudin;Umi Kalsom Md Shah;Huzairi Zainudin;Suraini Abd-Aziz

  • Production of bacterial endoglucanase from pretreated oil palm empty fruit bunch by bacillus pumilus EB3.

    Hidayah Ariffin;Mohd Ali Hassan;Umi Kalsom Shah;Norhafizah Abdullah

  • Feedstock Recycling of Flame-Resisting Poly(lactic acid)/Aluminum Hydroxide Composite to l,l-lactide

    Haruo Nishida;Yujiang Fan;Tomokazu Mori;Naoko Oyagi

  • Effects of palm oil mill effluent (POME) anaerobic sludge from 500 m3 of closed anaerobic methane digested tank on pressed-shredded empty fruit bunch (EFB) composting process

    Azhari Samsu Baharuddin;Azhari Samsu Baharuddin;Lim Siong Hock;Mohd Zulkhairi Md Yusof;Nor' Aini Abdul Rahman

  • Production of mono sugar from acid hydrolysis of seaweed

    Sung-Soo Jang;Yoshihito Shirai;Motoharu Uchida;Minato Wakisaka

  • Production and characterisation of cellulase from Bacillus pumilus EB3

    Hidayah Ariffin;Norhafizah Abdullah;Umi Kalsom Md. Shah;Yoshihito Shirai

Frequent Co-Authors

Mohd Ali Hassan
Mohd Ali Hassan Universiti Putra Malaysia
Haruo Nishida
Haruo Nishida Kyushu Institute of Technology
Takeshi Endo
Takeshi Endo Kyushu Institute of Technology
Kazuhiro Nakanishi
Kazuhiro Nakanishi Okayama University
Meisam Tabatabaei
Meisam Tabatabaei Agricultural Biotechnology Research Institute of Iran
Qunhui Wang
Qunhui Wang University of Science and Technology Beijing
Kenji Hashimoto
Kenji Hashimoto Kyoto University
Norhani Abdullah
Norhani Abdullah Universiti Putra Malaysia
Ryuichi Matsuno
Ryuichi Matsuno Ishikawa Prefectural University
Nor Azowa Ibrahim
Nor Azowa Ibrahim Universiti Putra Malaysia

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