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Stephen J. Allen

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 66 7220 6544 416 376 154 16918

Stephen J. Allen publications per year

The chart shows the history of publications by Stephen J. Allen between 1980 and 2019, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Stephen J. Allen published across 40 years, from 1980 to 2019, averaging 4.9 papers a year. Output peaked at 16 publications in 2004. 1 of the 195 publications appeared in the last two years.

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

195 publications in total across all disciplines

View publications per year as a table
Stephen J. Allen: publications per year, 1980 to 2019
Year Publications
1980 2
1981 1
1982 1
1983 3
1984 4
1985 0
1986 2
1987 4
1988 6
1989 2
1990 3
1991 7
1992 7
1993 2
1994 1
1995 4
1996 4
1997 6
1998 4
1999 4
2000 8
2001 6
2002 11
2003 11
2004 16
2005 13
2006 5
2007 9
2008 9
2009 5
2010 5
2011 8
2012 5
2013 8
2014 4
2015 1
2016 0
2017 3
2018 0
2019 1
Total 195
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Stephen J. Allen 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 Stephen J. Allen 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, 141–160 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: 154 publications — 15th percentile

15% 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 1,218 154
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
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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Stephen J. Allen 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 Stephen J. Allen 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, 66–67 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: 66 D-Index — 60th percentile

60% 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
64–65 731
66–67 775 66
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

Stephen J. Allen is affiliated with Queen's University Belfast in the United Kingdom. Their research profile reflects involvement in academic endeavors primarily connected to this institution.

No specific recent papers or publications have been recorded, nor are there listed frequent co-authors or common publication venues associated with their work in the data provided.

Details regarding the main fields of study, subfields, or main topics of their research have not been indicated in the current information.

There is no record of book publications or awards linked to this researcher in the information given.

Their academic contributions, affiliations, and potential areas of research cannot be further detailed based on the provided data.

Best Publications

  • Adsorption isotherm models for basic dye adsorption by peat in single and binary component systems

    Stephen Allen;G. McKay;J.F. Porter

  • The removal of dyes from textile wastewater: a study of the physical characteristics and adsorption mechanisms of diatomaceous earth

    M.A. Al-Ghouti;Majeda Khraisheh;Stephen Allen;Mohamad Ahmad

  • Effect of carbon surface chemistry on the removal of reactive dyes from textile effluent

    Y. Al-Degs;M.A.M. Khraisheh;S.J. Allen;M.N. Ahmad

  • Metal removal from wastewater using peat.

    P.A Brown;S.A Gill;S.J Allen

  • Adsorption of Methylene Blue onto activated carbon produced from steam activated bituminous coal: A study of equilibrium adsorption isotherm

    Emad N. El Qada;Stephen J. Allen;Gavin M. Walker

  • Intraparticle diffusion of a basic dye during adsorption onto sphagnum peat

    S.J. Allen;Gordon Mckay;K.Y.H. Khader

  • Kinetic and thermodynamics of chromium ions adsorption onto low-cost dolomite adsorbent

    Ahmad B. Albadarin;Chirangano Mangwandi;Ala’a H. Al-Muhtaseb;Ala’a H. Al-Muhtaseb;Gavin M. Walker

  • Comparison of optimised isotherm models for basic dye adsorption by kudzu

    Stephen J. Allen;Quan Gan;Ronan Matthews;Pauline A. Johnson

  • Kinetics of a reactive dye adsorption onto dolomitic sorbents.

    G.M. Walker;L. Hansen;J.-A. Hanna;S.J. Allen

  • Adsorption of basic dyes from aqueous solution onto activated carbons

    Emad N. El Qada;Stephen J. Allen;Gavin M. Walker

  • Thermodynamic behaviour and the effect of temperature on the removal of dyes from aqueous solution using modified diatomite: A kinetic study

    M. Al-Ghouti;M.A.M. Khraisheh;Mohamad Ahmad;Stephen Allen

  • Effect of OH and silanol groups in the removal of dyes from aqueous solution using diatomite.

    M.A.M. Khraisheh;M.A. Al-Ghouti;Stephen Allen;Mohamad Ahmad

  • Isotherm analyses for single component and multi-component metal sorption onto lignite

    Stephen J. Allen;Pauline A. Brown

  • Adsorption behaviour of methylene blue onto Jordanian diatomite: A kinetic study

    Mohammad A. Al-Ghouti;Majeda A.M. Khraisheh;Mohammad N.M. Ahmad;Stephen Allen

  • Kinetic dynamics in heterogeneous enzymatic hydrolysis of cellulose: an overview, an experimental study and mathematical modelling

    Quan Gan;Stephen Allen;G. Taylor

  • Enhanced removal of organic matter and ammoniacal-nitrogen in a column experiment of tidal flow constructed wetland system.

    Guangzhi Sun;Yaqian Zhao;Stephen Allen

  • Transport processes in the sorption of colored ions by peat particles

    Gordon McKay;Stephen J Allen;Ian F McConvey;Michael S Otterburn

  • Adsorption Characteristics of Reactive Dyes in Columns of Activated Carbon

    Y.S. Al-Degs;M.A.M. Khraisheh;S.J. Allen;M.N. Ahmad

  • Biosorption of toxic chromium from aqueous phase by lignin: mechanism, effect of other metal ions and salts

    Ahmad B. Albadarin;Ala’a H. Al-Muhtaseb;Nasir A. Al-laqtah;Gavin M. Walker

  • Kinetic modeling of the adsorption of basic dyes by kudzu.

    Stephen J. Allen;Quan Gan;Ronan Matthews;Pauline A. Johnson

Frequent Co-Authors

Gordon McKay
Gordon McKay Hamad bin Khalifa University
Gavin Walker
Gavin Walker University of Limerick
Ahmad B. Albadarin
Ahmad B. Albadarin University of Limerick
Mohammad N.M. Ahmad
Mohammad N.M. Ahmad American University of Beirut
Majeda Khraisheh
Majeda Khraisheh Qatar University
Guangzhi Sun
Guangzhi Sun Edith Cowan University
Yaqian Zhao
Yaqian Zhao Xi'an University of Technology
Ala’a H. Al-Muhtaseb
Ala’a H. Al-Muhtaseb Sultan Qaboos University
Ian S. Young
Ian S. Young Queen's University Belfast
Mika Sillanpää
Mika Sillanpää University of Johannesburg

External Links

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Best Scientists Citing Stephen J. Allen

Gordon McKay

Gordon McKay

Hamad bin Khalifa University

Publications: 103

Vinod Kumar Gupta

Vinod Kumar Gupta

King Abdulaziz University

Publications: 51

Mehrorang Ghaedi

Mehrorang Ghaedi

Yasouj University

Publications: 40

Ahmad B. Albadarin

Ahmad B. Albadarin

University of Limerick

Publications: 39

B.H. Hameed

B.H. Hameed

Qatar University

Publications: 38

Gavin Walker

Gavin Walker

University of Limerick

Publications: 28

Baoyu Gao

Baoyu Gao

Shandong University

Publications: 28

Yongsheng Yan

Yongsheng Yan

Jiangsu University

Publications: 27

Eric Guibal

Eric Guibal

Institut Mines-Télécom

Publications: 27

Yaqian Zhao

Yaqian Zhao

Xi'an University of Technology

Publications: 26

Jianming Pan

Jianming Pan

Jiangsu University

Publications: 23

George Z. Kyzas

George Z. Kyzas

Democritus University of Thrace

Publications: 23

Mika Sillanpää

Mika Sillanpää

University of Johannesburg

Publications: 23

Yuh-Shan Ho

Yuh-Shan Ho

Asian University

Publications: 23

Qinyan Yue

Qinyan Yue

Shandong University

Publications: 22

Dinesh Mohan

Dinesh Mohan

Jawaharlal Nehru University

Publications: 21

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