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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 54 12438 11193 3314 2709 237 18360

Paul Langan publications per year

The chart shows the history of publications by Paul Langan between 1989 and 2023, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Paul Langan published across 35 years, from 1989 to 2023, averaging 7.2 papers a year. Output peaked at 30 publications in 2010. 2 of the 252 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1989 to 2023. Vertical axis: number of publications, 0 to 30. Peak 30 publications in 2010. 1989: 1 publication 1990: 1 publication 1991: 0 publications 1992: 5 publications 1993: 1 publication 1994: 0 publications 1995: 2 publications 1996: 4 publications 1997: 7 publications 1998: 3 publications 1999: 6 publications 2000: 1 publication 2001: 6 publications 2002: 3 publications 2003: 3 publications 2004: 6 publications 2005: 6 publications 2006: 5 publications 2007: 6 publications 2008: 15 publications 2009: 8 publications 2010: 30 publications 2011: 26 publications 2012: 17 publications 2013: 8 publications 2014: 30 publications 2015: 23 publications 2016: 8 publications 2017: 6 publications 2018: 9 publications 2019: 1 publication 2020: 2 publications 2021: 1 publication 2022: 1 publication 2023: 1 publication
1989 2023

252 publications in total across all disciplines

View publications per year as a table
Paul Langan: publications per year, 1989 to 2023
Year Publications
1989 1
1990 1
1991 0
1992 5
1993 1
1994 0
1995 2
1996 4
1997 7
1998 3
1999 6
2000 1
2001 6
2002 3
2003 3
2004 6
2005 6
2006 5
2007 6
2008 15
2009 8
2010 30
2011 26
2012 17
2013 8
2014 30
2015 23
2016 8
2017 6
2018 9
2019 1
2020 2
2021 1
2022 1
2023 1
Total 252
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Paul Langan 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 Paul Langan 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, 221–240 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: 237 publications — 45th percentile

45% 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 1,216 237
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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Paul Langan 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 Paul Langan 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, 54–55 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: 54 D-Index — 31st percentile

31% 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 54
56–57 1,051
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

Paul Langan is affiliated with Oak Ridge National Laboratory in the United States. Their research primarily spans the fields of biochemistry, genetics, and molecular biology, with a particular emphasis on molecular biology and biomedical engineering.

The scientist's work focuses on multiple specialized topics including:

  • SARS-CoV-2 and COVID-19 Research
  • Computational Drug Discovery Methods
  • RNA and protein synthesis mechanisms
  • Advanced Cellulose Research Studies
  • Biofuel production and bioconversion
  • Polysaccharides and Plant Cell Walls
  • Machine Learning in Healthcare

Paul Langan has contributed to several peer-reviewed papers in notable publication venues. Recent publications include:

  • Structural plasticity of SARS-CoV-2 3CL Mpro active site cavity revealed by room temperature X-ray crystallography, 2020, Nature Communications
  • Untangling the threads of cellulose mercerization, 2022, Nature Communications
  • Morphological changes in the cellulose and lignin components of biomass occur at different stages of steam pretreatment, 2021, HAL (Le Centre pour la Communication Scientifique Directe)
  • Trustworthy Data and AI Environments for Clinical Prediction: Application to Crisis-Risk in People With Depression, 2023, IEEE Journal of Biomedical and Health Informatics
  • Capturing the Catalytic Proton of Dihydrofolate Reductase: Implications for General Acid-Base Catalysis, 2021, ACS Catalysis

Frequent co-authors collaborating with Paul Langan include:

  • Hugh O'Neill
  • Andrey Kovalevsky
  • Daniel W. Kneller
  • G.N. Phillips
  • R. Jedrzejczak

The scientist's publications have appeared primarily in the following venues:

  • Nature Communications
  • IEEE Journal of Biomedical and Health Informatics
  • Research Square (Research Square)
  • ACS Catalysis
  • HAL (Le Centre pour la Communication Scientifique Directe)

Best Publications

  • Lignin valorization: improving lignin processing in the biorefinery.

    Arthur J. Ragauskas;Gregg T. Beckham;Mary J. Biddy;Richard Chandra

  • Crystal Structure and Hydrogen-Bonding System in Cellulose Iβ from Synchrotron X-ray and Neutron Fiber Diffraction

    Yoshiharu Nishiyama;Paul Langan;Henri Chanzy

  • X-ray structure of mercerized cellulose II at 1 Å resolution

    Paul Langan;Yoshiharu Nishiyama;Henri Chanzy

  • Structural plasticity of SARS-CoV-2 3CL M pro active site cavity revealed by room temperature X-ray crystallography.

    Daniel W. Kneller;Gwyndalyn Phillips;Hugh M. O’Neill;Robert Jedrzejczak

  • A REVISED STRUCTURE AND HYDROGEN-BONDING SYSTEM IN CELLULOSE II FROM A NEUTRON FIBER DIFFRACTION ANALYSIS

    P. Langan;Y. Nishiyama;H. Chanzy

  • Restructuring the crystalline cellulose hydrogen bond network enhances its depolymerization rate

    Shishir P. S. Chundawat;Giovanni Bellesia;Nirmal Uppugundla;Leonardo da Costa Sousa

  • Cellulose IIII Crystal Structure and Hydrogen Bonding by Synchrotron X-ray and Neutron Fiber Diffraction

    Masahisa Wada;Henri Chanzy;Yoshiharu Nishiyama;Paul Langan

  • Joint X-ray and neutron refinement with phenix.refine

    Pavel V. Afonine;Marat Mustyakimov;Ralf W. Grosse-Kunstleve;Nigel W. Moriarty

  • Neutron crystallography, molecular dynamics, and quantum mechanics studies of the nature of hydrogen bonding in cellulose Ibeta.

    Yoshiharu Nishiyama;Glenn P. Johnson;Alfred D. French;V. Trevor Forsyth

  • Periodic disorder along ramie cellulose microfibrils.

    Yoshiharu Nishiyama;Ung-Jin Kim;Dae-Young Kim;Kyoko S. Katsumata

  • Common processes drive the thermochemical pretreatment of lignocellulosic biomass

    Paul Langan;Paul Langan;Loukas Petridis;Loukas Petridis;Hugh M. O'Neill;Sai Venkatesh Pingali

  • Insights into Hydrogen Bonding and Stacking Interactions in Cellulose

    R. Parthasarathi;G. Bellesia;S. P. S. Chundawat;S. P. S. Chundawat;B. E. Dale;B. E. Dale

  • Metal ion roles and the movement of hydrogen during reaction catalyzed by D-xylose isomerase: a joint x-ray and neutron diffraction study.

    Andrey Y. Kovalevsky;Leif Hanson;S. Zoe Fisher;Marat Mustyakimov

  • Neutron crystallography: opportunities, challenges, and limitations

    Matthew P Blakeley;Paul Langan;Paul Langan;Nobuo Niimura;Alberto Podjarny

  • Effect of lignin content on changes occurring in poplar cellulose ultrastructure during dilute acid pretreatment

    Qining Sun;Marcus Foston;Xianzhi Meng;Daisuke Sawada

  • Generalized X-ray and neutron crystallographic analysis: more accurate and complete structures for biological macromolecules

    Paul D. Adams;Paul D. Adams;Marat Mustyakimov;Pavel V. Afonine;Paul Langan

  • Ionic-liquid induced changes in cellulose structure associated with enhanced biomass hydrolysis.

    Indira P. Samayam;B. Leif Hanson;Paul Langan;Constance A. Schall

  • Synchrotron X-ray structures of cellulose Iβ and regenerated cellulose II at ambient temperature and 100 K

    Paul Langan;Narayanasami Sukumar;Yoshiharu Nishiyama;Henri Chanzy

  • Dynamics of water bound to crystalline cellulose

    Hugh O'Neill;Hugh O'Neill;Sai Venkatesh Pingali;Loukas Petridis;Loukas Petridis;Junhong He

  • Conformational flexibility of soluble cellulose oligomers: chain length and temperature dependence.

    Tongye Shen;Paul Langan;Alfred D. French;Glenn P. Johnson

  • New Insights into Hydrogen Bonding and Stacking Interactions in Cellulose

    Paul Langan

Frequent Co-Authors

Andrey Kovalevsky
Andrey Kovalevsky Oak Ridge National Laboratory
Yoshiharu Nishiyama
Yoshiharu Nishiyama Centre national de la recherche scientifique, CNRS
Jeremy C. Smith
Jeremy C. Smith University of Tennessee at Knoxville
Masahisa Wada
Masahisa Wada Kyoto University
Hugh O'Neill
Hugh O'Neill Oak Ridge National Laboratory
Brian H. Davison
Brian H. Davison Oak Ridge National Laboratory
Paul D. Adams
Paul D. Adams Lawrence Berkeley National Laboratory
Henri Chanzy
Henri Chanzy Joseph Fourier University
Arthur J. Ragauskas
Arthur J. Ragauskas University of Tennessee at Knoxville
David A. Keen
David A. Keen Rutherford Appleton Laboratory

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