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Arthur F. J. Ram

Arthur F. J. Ram

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Microbiology 66 2400 2195 100 92 197 15638

Arthur F. J. Ram publications per year

The chart shows the history of publications by Arthur F. J. Ram between 1991 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Arthur F. J. Ram published across 35 years, from 1991 to 2025, averaging 6.3 papers a year. Output peaked at 17 publications in 2016. 15 of the 222 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1991 to 2025. Vertical axis: number of publications, 0 to 17. Peak 17 publications in 2016. 1991: 1 publication 1992: 0 publications 1993: 0 publications 1994: 2 publications 1995: 5 publications 1996: 2 publications 1997: 5 publications 1998: 4 publications 1999: 1 publication 2000: 1 publication 2001: 2 publications 2002: 3 publications 2003: 0 publications 2004: 7 publications 2005: 8 publications 2006: 4 publications 2007: 10 publications 2008: 7 publications 2009: 5 publications 2010: 5 publications 2011: 12 publications 2012: 11 publications 2013: 9 publications 2014: 7 publications 2015: 8 publications 2016: 17 publications 2017: 16 publications 2018: 9 publications 2019: 8 publications 2020: 13 publications 2021: 6 publications 2022: 10 publications 2023: 9 publications 2024: 5 publications 2025: 10 publications
1991 2025

222 publications in total across all disciplines

View publications per year as a table
Arthur F. J. Ram: publications per year, 1991 to 2025
Year Publications
1991 1
1992 0
1993 0
1994 2
1995 5
1996 2
1997 5
1998 4
1999 1
2000 1
2001 2
2002 3
2003 0
2004 7
2005 8
2006 4
2007 10
2008 7
2009 5
2010 5
2011 12
2012 11
2013 9
2014 7
2015 8
2016 17
2017 16
2018 9
2019 8
2020 13
2021 6
2022 10
2023 9
2024 5
2025 10
Total 222
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Arthur F. J. Ram publications per year - data summary

  • Arthur F. J. Ram, a Microbiology scholar from Leiden University, has 222 publications recorded across 35 years, from 1991 to 2025.
  • The oldest publication on record dates to 1991 and the most recent to 2025.
  • The most productive year is 2016, with 17 publications.
  • The least productive years with any output are 1991, 1999 and 2000, with 1 publication each.
  • 3 of the 35 years in the span carry no publications at all (1992, 1993 and 2003).
  • The rate of publication averages 6.3 papers per year over the whole span, or 6.9 per year counting only the 32 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 40 publications, 18% of the career total.
  • Split into equal eras - 1991-2002: 26 publications (2.2 per year); 2003-2014: 85 publications (7.1 per year); 2015-2025: 111 publications (10.1 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Arthur F. J. Ram publication distribution in Microbiology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Microbiology in 2026. The highlighted bar marks where Arthur F. J. Ram sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 64 bars. Horizontal axis: publications, 55–64 to 679+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 135–144 publications. The last bar groups every scientist with 679 publications or more. The highlighted bar, 195–204 publications, is where this scientist sits. 55–64 publications: 8 scientists 65–74 publications: 29 scientists 75–84 publications: 55 scientists 85–94 publications: 112 scientists 95–104 publications: 137 scientists 105–114 publications: 190 scientists 115–124 publications: 235 scientists 125–134 publications: 234 scientists 135–144 publications: 288 scientists 145–154 publications: 265 scientists 155–164 publications: 264 scientists 165–174 publications: 253 scientists 175–184 publications: 276 scientists 185–194 publications: 190 scientists 195–204 publications: 234 scientists 205–214 publications: 208 scientists 215–224 publications: 198 scientists 225–234 publications: 155 scientists 235–244 publications: 161 scientists 245–254 publications: 160 scientists 255–264 publications: 146 scientists 265–274 publications: 139 scientists 275–284 publications: 148 scientists 285–294 publications: 115 scientists 295–304 publications: 96 scientists 305–314 publications: 88 scientists 315–324 publications: 106 scientists 325–334 publications: 65 scientists 335–344 publications: 76 scientists 345–354 publications: 64 scientists 355–364 publications: 62 scientists 365–374 publications: 65 scientists 375–384 publications: 61 scientists 385–394 publications: 34 scientists 395–404 publications: 44 scientists 405–414 publications: 36 scientists 415–424 publications: 35 scientists 425–434 publications: 29 scientists 435–444 publications: 33 scientists 445–454 publications: 34 scientists 455–464 publications: 25 scientists 465–474 publications: 26 scientists 475–484 publications: 20 scientists 485–494 publications: 19 scientists 495–504 publications: 16 scientists 505–514 publications: 17 scientists 515–524 publications: 23 scientists 525–534 publications: 14 scientists 535–544 publications: 14 scientists 545–554 publications: 18 scientists 555–564 publications: 12 scientists 565–574 publications: 7 scientists 575–584 publications: 9 scientists 585–594 publications: 9 scientists 595–604 publications: 9 scientists 605–614 publications: 7 scientists 615–624 publications: 9 scientists 625–634 publications: 7 scientists 635–644 publications: 4 scientists 645–654 publications: 5 scientists 655–664 publications: 6 scientists 665–674 publications: 7 scientists 675–678 publications: 3 scientists 679+ publications: 99 scientists
55–64 publications 679+

This scientist: 197 publications — 47th percentile

47% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 679 publications or more.

View publications distribution as a table
Number of Microbiology scientists by publication count, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
Publications Scientists This scientist
55–64 8
65–74 29
75–84 55
85–94 112
95–104 137
105–114 190
115–124 235
125–134 234
135–144 288
145–154 265
155–164 264
165–174 253
175–184 276
185–194 190
195–204 234 197
205–214 208
215–224 198
225–234 155
235–244 161
245–254 160
255–264 146
265–274 139
275–284 148
285–294 115
295–304 96
305–314 88
315–324 106
325–334 65
335–344 76
345–354 64
355–364 62
365–374 65
375–384 61
385–394 34
395–404 44
405–414 36
415–424 35
425–434 29
435–444 33
445–454 34
455–464 25
465–474 26
475–484 20
485–494 19
495–504 16
505–514 17
515–524 23
525–534 14
535–544 14
545–554 18
555–564 12
565–574 7
575–584 9
585–594 9
595–604 9
605–614 7
615–624 9
625–634 7
635–644 4
645–654 5
655–664 6
665–674 7
675–678 3
679+ 99
Download as CSV

Arthur F. J. Ram publication distribution in Microbiology in 2026 - data summary

  • The chart plots the publication count of all 5,513 Microbiology scientists ranked by Research.com in 2026, grouped into 64 ranges running from 55–64 to 679+ publications.
  • Arthur F. J. Ram, a Microbiology scholar from Leiden University, records 197 publications - the 47th percentile of the discipline.
  • 47% of ranked Microbiology scientists score the same or lower than Arthur F. J. Ram, and about 53% score higher.
  • The median of the discipline falls in the 195–204 publications range, and Arthur F. J. Ram falls inside that same range.
  • The most crowded range is 135–144 publications, holding 288 scientists (5% of the field).
  • 54% of the field sits in the lowest quarter of the value range (up to 205–214 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 679 publications or more, 99 scientists in all (2% of the field).

Arthur F. J. Ram D-index placement in Microbiology in 2026

The chart shows the D-index (discipline H-index) distribution of Microbiology scientists ranked by Research.com in 2026. The highlighted bar marks where Arthur F. J. Ram sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 88 bars. Horizontal axis: D-Index, 40 to 127+. Vertical axis: number of scientists, 0 to 162. Most scientists, 162, have 58 D-Index. The last bar groups every scientist with 127 D-Index or more. The highlighted bar, 66 D-Index, is where this scientist sits. 40 D-Index: 30 scientists 41 D-Index: 86 scientists 42 D-Index: 90 scientists 43 D-Index: 117 scientists 44 D-Index: 122 scientists 45 D-Index: 123 scientists 46 D-Index: 108 scientists 47 D-Index: 110 scientists 48 D-Index: 106 scientists 49 D-Index: 109 scientists 50 D-Index: 129 scientists 51 D-Index: 111 scientists 52 D-Index: 116 scientists 53 D-Index: 127 scientists 54 D-Index: 134 scientists 55 D-Index: 134 scientists 56 D-Index: 112 scientists 57 D-Index: 136 scientists 58 D-Index: 162 scientists 59 D-Index: 151 scientists 60 D-Index: 139 scientists 61 D-Index: 123 scientists 62 D-Index: 126 scientists 63 D-Index: 144 scientists 64 D-Index: 109 scientists 65 D-Index: 103 scientists 66 D-Index: 124 scientists 67 D-Index: 112 scientists 68 D-Index: 103 scientists 69 D-Index: 131 scientists 70 D-Index: 94 scientists 71 D-Index: 93 scientists 72 D-Index: 96 scientists 73 D-Index: 92 scientists 74 D-Index: 80 scientists 75 D-Index: 66 scientists 76 D-Index: 87 scientists 77 D-Index: 60 scientists 78 D-Index: 73 scientists 79 D-Index: 59 scientists 80 D-Index: 57 scientists 81 D-Index: 55 scientists 82 D-Index: 47 scientists 83 D-Index: 77 scientists 84 D-Index: 50 scientists 85 D-Index: 45 scientists 86 D-Index: 42 scientists 87 D-Index: 41 scientists 88 D-Index: 32 scientists 89 D-Index: 38 scientists 90 D-Index: 35 scientists 91 D-Index: 34 scientists 92 D-Index: 27 scientists 93 D-Index: 26 scientists 94 D-Index: 33 scientists 95 D-Index: 22 scientists 96 D-Index: 37 scientists 97 D-Index: 22 scientists 98 D-Index: 21 scientists 99 D-Index: 22 scientists 100 D-Index: 30 scientists 101 D-Index: 16 scientists 102 D-Index: 20 scientists 103 D-Index: 17 scientists 104 D-Index: 19 scientists 105 D-Index: 16 scientists 106 D-Index: 19 scientists 107 D-Index: 18 scientists 108 D-Index: 14 scientists 109 D-Index: 10 scientists 110 D-Index: 9 scientists 111 D-Index: 7 scientists 112 D-Index: 11 scientists 113 D-Index: 6 scientists 114 D-Index: 15 scientists 115 D-Index: 10 scientists 116 D-Index: 12 scientists 117 D-Index: 7 scientists 118 D-Index: 10 scientists 119 D-Index: 10 scientists 120 D-Index: 11 scientists 121 D-Index: 2 scientists 122 D-Index: 7 scientists 123 D-Index: 12 scientists 124 D-Index: 5 scientists 125 D-Index: 9 scientists 126 D-Index: 6 scientists 127+ D-Index: 95 scientists
40 D-Index 127+

This scientist: 66 D-Index — 58th percentile

58% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 127 D-Index or more.

View D-Index distribution as a table
Number of Microbiology scientists by D-index, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
D-Index Scientists This scientist
40 30
41 86
42 90
43 117
44 122
45 123
46 108
47 110
48 106
49 109
50 129
51 111
52 116
53 127
54 134
55 134
56 112
57 136
58 162
59 151
60 139
61 123
62 126
63 144
64 109
65 103
66 124 66
67 112
68 103
69 131
70 94
71 93
72 96
73 92
74 80
75 66
76 87
77 60
78 73
79 59
80 57
81 55
82 47
83 77
84 50
85 45
86 42
87 41
88 32
89 38
90 35
91 34
92 27
93 26
94 33
95 22
96 37
97 22
98 21
99 22
100 30
101 16
102 20
103 17
104 19
105 16
106 19
107 18
108 14
109 10
110 9
111 7
112 11
113 6
114 15
115 10
116 12
117 7
118 10
119 10
120 11
121 2
122 7
123 12
124 5
125 9
126 6
127+ 95
Download as CSV

Arthur F. J. Ram D-index placement in Microbiology in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 5,513 Microbiology scientists ranked by Research.com in 2026, grouped into 88 ranges running from 40 to 127+ D-Index.
  • Arthur F. J. Ram, a Microbiology scholar from Leiden University, records 66 D-Index - the 58th percentile of the discipline.
  • 58% of ranked Microbiology scientists score the same or lower than Arthur F. J. Ram, and about 42% score higher.
  • The median of the discipline falls in the 63 D-Index range, and Arthur F. J. Ram ranks above the median.
  • The most crowded range is 58 D-Index, holding 162 scientists (3% of the field).
  • 47% of the field sits in the lowest quarter of the value range (up to 61 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 127 D-Index or more, 95 scientists in all (2% of the field).

Overview

Arthur F. J. Ram is affiliated with Leiden University in the Netherlands, specializing in the fields of Biochemistry, Genetics, and Molecular Biology, as well as Agricultural and Biological Sciences. Their research spans several subfields including Molecular Biology, Plant Science, Biomedical Engineering, Biotechnology, and Pharmacology.

The research topics Arthur F. J. Ram has focused on include:

  • Fungal and yeast genetics research
  • Biofuel production and bioconversion
  • Enzyme Production and Characterization
  • Fermentation and Sensory Analysis
  • Fungal Biology and Applications
  • Plant Pathogens and Fungal Diseases
  • Microbial Metabolic Engineering and Bioproduction

The scientist's recent publications demonstrate involvement in fungal biotechnology, microbial recycling, and enzyme mechanisms. Sample works include:

  • "Growing a circular economy with fungal biotechnology: a white paper," 2020, Fungal Biology and Biotechnology
  • "Carbohydrate Binding Modules: Diversity of Domain Architecture in Amylases and Cellulases From Filamentous Microorganisms," 2020, Frontiers in Bioengineering and Biotechnology
  • "Toward Microbial Recycling and Upcycling of Plastics: Prospects and Challenges," 2022, Frontiers in Microbiology
  • "Rational Design of Mechanism-Based Inhibitors and Activity-Based Probes for the Identification of Retaining α-l-Arabinofuranosidases," 2020, Journal of the American Chemical Society
  • "Conserved white-rot enzymatic mechanism for wood decay in the Basidiomycota genus Pycnoporus," 2020, DNA Research

Arthur F. J. Ram collaborates frequently with researchers including:

  • Mark Arentshorst
  • Sjoerd J. Seekles
  • Peter J. Punt
  • Han A. B. Wösten
  • Adrian Tsang

Their work appears often in scientific journals such as:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Fungal Biology and Biotechnology
  • G3 Genes Genomes Genetics
  • RSC Chemical Biology
  • The Cell Surface

Best Publications

  • Genome sequencing and analysis of the versatile cell factory Aspergillus niger CBS 513.88

    Herman J. Pel;Johannes H. De Winde;Johannes H. De Winde;David B. Archer;Paul S. Dyer

  • Agrobacterium -mediated transformation as a tool for functional genomics in fungi

    Caroline B. Michielse;Paul J. J. Hooykaas;Cees A. M. J. J. van den Hondel;Arthur F. J. Ram

  • Comparative genomics reveals high biological diversity and specific adaptations in the industrially and medically important fungal genus Aspergillus

    Ronald P. de Vries;Robert Riley;Ad Wiebenga;Guillermo Aguilar-Osorio

  • Growing a circular economy with fungal biotechnology: a white paper

    Vera Meyer;Evelina Y Basenko;J Philipp Benz;Gerhard H Braus

  • Identification of fungal cell wall mutants using susceptibility assays based on Calcofluor white and Congo red

    Arthur F J Ram;Frans M Klis

  • Large scale identification of genes involved in cell surface biosynthesis and architecture in Saccharomyces cerevisiae

    Marc Lussier;Ann-Marie White;Jane Sheraton;Tiziano di Paolo

  • In silicio identification of glycosyl-phosphatidylinositol-anchored plasma-membrane and cell wall proteins of Saccharomyces cerevisiae

    L.H.P. Caro;H. Tettelin;J.H. Vossen;A.F.J. Ram

  • A new approach for isolating cell wall mutants in Saccharomyces cerevisiae by screening for hypersensitivity to calcofluor white

    A.F.J. Ram;A. Wolters;R. ten Hoopen;F.M. Klis

  • Features and functions of covalently linked proteins in fungal cell walls.

    Piet W.J. De Groot;Arthur F. Ram;Frans M. Klis

  • Novel aspects of tomato root colonization and infection by Fusarium oxysporum f. sp. radicis-lycopersici revealed by confocal laser scanning microscopic analysis using the green fluorescent protein as a marker

    Anastasia L. Lagopodi;Arthur F. J. Ram;Gerda E. M. Lamers;Peter J. Punt

  • Highly efficient gene targeting in the Aspergillus niger kusA mutant.

    Vera Meyer;Mark Arentshorst;Aymen El-Ghezal;Ann-Christin Drews

  • Current challenges of research on filamentous fungi in relation to human welfare and a sustainable bio-economy: a white paper

    Vera Meyer;Mikael Rørdam Andersen;Axel A. Brakhage;Axel A. Brakhage;Gerhard H. Braus

  • Loss of the plasma membrane-bound protein Gas1p in Saccharomyces cerevisiae results in the release of beta1,3-glucan into the medium and induces a compensation mechanism to ensure cell wall integrity.

    A.F.J. Ram;J.C. Kapteyn;R.C. Montijn;L.H.P. Caro

  • Fungal Gene Expression on Demand: an Inducible, Tunable, and Metabolism-Independent Expression System for Aspergillus niger

    Vera Meyer;Franziska Wanka;Janneke van Gent;Mark Arentshorst

  • Agrobacterium -mediated transformation of the filamentous fungus Aspergillus awamori

    Caroline B Michielse;Paul J J Hooykaas;Cees A M J J van den Hondel;Arthur F J Ram

  • Altered extent of cross-linking of beta1,6-glucosylated mannoproteins to chitin in Saccharomyces cerevisiae mutants with reduced cell wall beta1,3-glucan content.

    J. C. Kapteyn;A. F. J. Ram;E. M. Groos;R. Kollar

  • Aspergillus as a multi-purpose cell factory: current status and perspectives.

    Vera Meyer;Bo Wu;Bo Wu;Arthur F. J. Ram

  • Expanding the ku70 toolbox for filamentous fungi: establishment of complementation vectors and recipient strains for advanced gene analyses

    Neuza D. S. P. Carvalho;Mark Arentshorst;Min Jin Kwon;Vera Meyer

  • The cell wall stress response in Aspergillus niger involves increased expression of the glutamine : fructose-6-phosphate amidotransferase-encoding gene (gfaA) and increased deposition of chitin in the cell wall

    Arthur F. J. Ram;Mark Arentshorst;Robbert A. Damveld;Patricia A. vanKuyk

  • Using Non-homologous End-Joining-Deficient Strains for Functional Gene Analyses in Filamentous Fungi

    Mark Arentshorst;Arthur F. J. Ram;Vera Meyer;Vera Meyer

  • Additional file 8: of Comparative genomics reveals high biological diversity and specific adaptations in the industrially and medically important fungal genus Aspergillus

    Ronald de Vries;Robert Riley;Ad Wiebenga;Guillermo Aguilar-Osorio

Frequent Co-Authors

Vera Meyer
Vera Meyer Technical University of Berlin
Peter J. Punt
Peter J. Punt Leiden University
Frans M. Klis
Frans M. Klis University of Amsterdam
Ronald P. de Vries
Ronald P. de Vries Utrecht University
Bernard Henrissat
Bernard Henrissat Technical University of Denmark
Jens Christian Frisvad
Jens Christian Frisvad Technical University of Denmark
Gerhard H. Braus
Gerhard H. Braus University of Göttingen
Jaap Visser
Jaap Visser Utrecht University
Eric Record
Eric Record INRAE : Institut national de recherche pour l'agriculture, l'alimentation et l'environnement

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