World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 61 9186 8325 2598 2139 245 14272
Biology and Biochemistry 62 10742 9914 4666 4189 236 14454

John R. Whitaker publications per year

The chart shows the history of publications by John R. Whitaker between 1950 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. John R. Whitaker published across 75 years, from 1950 to 2024, averaging 3.7 papers a year. Output peaked at 18 publications in 2018. 1 of the 277 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1950 to 2024. Vertical axis: number of publications, 0 to 18. Peak 18 publications in 2018. 1950: 1 publication 1951: 1 publication 1952: 2 publications 1953: 0 publications 1954: 2 publications 1955: 4 publications 1956: 1 publication 1957: 3 publications 1958: 2 publications 1959: 2 publications 1960: 1 publication 1961: 2 publications 1962: 5 publications 1963: 4 publications 1964: 5 publications 1965: 3 publications 1966: 2 publications 1967: 10 publications 1968: 8 publications 1969: 9 publications 1970: 2 publications 1971: 4 publications 1972: 6 publications 1973: 5 publications 1974: 6 publications 1975: 1 publication 1976: 3 publications 1977: 10 publications 1978: 9 publications 1979: 6 publications 1980: 9 publications 1981: 5 publications 1982: 8 publications 1983: 5 publications 1984: 16 publications 1985: 8 publications 1986: 2 publications 1987: 5 publications 1988: 4 publications 1989: 6 publications 1990: 8 publications 1991: 6 publications 1992: 1 publication 1993: 4 publications 1994: 2 publications 1995: 4 publications 1996: 2 publications 1997: 2 publications 1998: 5 publications 1999: 2 publications 2000: 2 publications 2001: 1 publication 2002: 12 publications 2003: 8 publications 2004: 4 publications 2005: 0 publications 2006: 0 publications 2007: 2 publications 2008: 1 publication 2009: 0 publications 2010: 2 publications 2011: 0 publications 2012: 1 publication 2013: 0 publications 2014: 1 publication 2015: 0 publications 2016: 0 publications 2017: 0 publications 2018: 18 publications 2019: 0 publications 2020: 1 publication 2021: 0 publications 2022: 0 publications 2023: 0 publications 2024: 1 publication
1950 2024

277 publications in total across all disciplines

View publications per year as a table
John R. Whitaker: publications per year, 1950 to 2024
Year Publications
1950 1
1951 1
1952 2
1953 0
1954 2
1955 4
1956 1
1957 3
1958 2
1959 2
1960 1
1961 2
1962 5
1963 4
1964 5
1965 3
1966 2
1967 10
1968 8
1969 9
1970 2
1971 4
1972 6
1973 5
1974 6
1975 1
1976 3
1977 10
1978 9
1979 6
1980 9
1981 5
1982 8
1983 5
1984 16
1985 8
1986 2
1987 5
1988 4
1989 6
1990 8
1991 6
1992 1
1993 4
1994 2
1995 4
1996 2
1997 2
1998 5
1999 2
2000 2
2001 1
2002 12
2003 8
2004 4
2005 0
2006 0
2007 2
2008 1
2009 0
2010 2
2011 0
2012 1
2013 0
2014 1
2015 0
2016 0
2017 0
2018 18
2019 0
2020 1
2021 0
2022 0
2023 0
2024 1
Total 277
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John R. Whitaker publications per year - data summary

  • John R. Whitaker, a Chemistry scholar from University of California, Davis, has 277 publications recorded across 75 years, from 1950 to 2024.
  • The oldest publication on record dates to 1950 and the most recent to 2024.
  • The most productive year is 2018, with 18 publications.
  • The least productive years with any output are 1950, 1951, 1956, 1960 and others, with 1 publication each.
  • 13 of the 75 years in the span carry no publications at all (1953, 2005, 2006, 2009 and others).
  • The rate of publication averages 3.7 papers per year over the whole span, or 4.5 per year counting only the 62 years with at least one publication.
  • The last 5 years on the chart (2020-2024) hold 2 publications, <1% of the career total.
  • Split into equal eras - 1950-1974: 90 publications (3.6 per year); 1975-1999: 133 publications (5.3 per year); 2000-2024: 54 publications (2.2 per year).
  • Comparing the opening and closing eras, the overall trend of publication is declining.

John R. Whitaker 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 John R. Whitaker 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, 241–260 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: 245 publications — 48th percentile

48% 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 1,100 245
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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John R. Whitaker publication distribution in Chemistry in 2026 - data summary

  • The chart plots the publication count of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 63 ranges running from 61–80 to 1,295+ publications.
  • John R. Whitaker, a Chemistry scholar from University of California, Davis, records 245 publications - the 48th percentile of the discipline.
  • 48% of ranked Chemistry scientists score the same or lower than John R. Whitaker, and about 52% score higher.
  • The median of the discipline falls in the 241–260 publications range, and John R. Whitaker falls inside that same range.
  • The most crowded range is 161–180 publications, holding 1,350 scientists (8% of the field).
  • 77% of the field sits in the lowest quarter of the value range (up to 361–380 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 1,295 publications or more, 100 scientists in all (<1% of the field).

John R. Whitaker 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 John R. Whitaker 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, 60–61 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: 61 D-Index — 49th percentile

49% 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 61
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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John R. Whitaker D-index placement in Chemistry in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 61 ranges running from 40–41 to 159+ D-Index.
  • John R. Whitaker, a Chemistry scholar from University of California, Davis, records 61 D-Index - the 49th percentile of the discipline.
  • 49% of ranked Chemistry scientists score the same or lower than John R. Whitaker, and about 51% score higher.
  • The median of the discipline falls in the 62–63 D-Index range, and John R. Whitaker ranks below the median.
  • The most crowded range is 56–57 D-Index, holding 1,051 scientists (6% of the field).
  • 70% of the field sits in the lowest quarter of the value range (up to 70–71 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 159 D-Index or more, 98 scientists in all (<1% of the field).

Research.com Recognitions

  • 1998 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

John R. Whitaker is affiliated with the University of California, Davis in the United States. Their research primarily falls within the field of Medicine, encompassing 139 publications with a focus on several subfields. These subfields include Cardiology and Cardiovascular Medicine, Emergency Medicine, Public Health, Environmental and Occupational Health, Pediatrics, Perinatology and Child Health, as well as Emergency Medical Services.

Their research covers a range of topics notable for their recurrence in published work. Key topics include:

  • Cardiac Arrhythmias and Treatments
  • Trauma and Emergency Care Studies
  • Cardiac electrophysiology and arrhythmias
  • Global Maternal and Child Health
  • Atrial Fibrillation Management and Outcomes
  • Cardiac pacing and defibrillation studies
  • Global Health and Surgery

John R. Whitaker has authored and contributed to several recent papers, illustrating the scope and diversity of their work in global health and surgery, trauma care, and cancer surgery outcomes. Notable recent publications are:

  • "Global variation in postoperative mortality and complications after cancer surgery: a multicentre, prospective cohort study in 82 countries" (2021) published in The Lancet
  • "Impact of malnutrition on early outcomes after cancer surgery: an international, multicentre, prospective cohort study" (2023) published in The Lancet Global Health
  • "Assessing trauma care systems in low-income and middle-income countries: a systematic review and evidence synthesis mapping the Three Delays framework to injury health system assessments" (2021) published in BMJ Global Health
  • "Identifying, Prioritizing and Visually Mapping Barriers to Injury Care in Rwanda: A Multi-disciplinary Stakeholder Exercise" (2020) published in World Journal of Surgery
  • "Equitable access to quality trauma systems in low-income and middle-income countries: assessing gaps and developing priorities in Ghana, Rwanda and South Africa" (2022) published in BMJ Global Health

The range of publication venues where John R. Whitaker frequently publishes includes:

  • Heart Rhythm
  • BMJ Military Health
  • Zenodo (CERN European Organization for Nuclear Research)
  • BMJ Open
  • BMJ Global Health

Frequent collaborators in their work include Usha B. Tedrow, Justine Davies, Paul C. Zei, William H. Sauer, and Steven Niederer, reflecting a network of co-authorships in related medical and clinical research fields.

Among the recognitions received, John R. Whitaker was named a Fellow of the American Association for the Advancement of Science (AAAS) in 1998.

Best Publications

  • Determination of Molecular Weights of Proteins by Gel Filtration of Sephadex.

    Unknown

  • The biochemistry and control of enzymatic browning

    M.Victoria Martinez;John R. Whitaker

  • An absolute method for protein determination based on difference in absorbance at 235 and 280 nm

    John R. Whitaker;Per Einar Granum

  • Principles of enzymology for the food sciences

    John R. Whitaker

  • MODIFICATION OF PROTEINS BY POLYPHENOL OXIDASE AND PEROXIDASE AND THEIR PRODUCTS

    Günter Matheis;John R. Whitaker

  • Handbook of Food Enzymology

    John R. Whitaker;Alphons G. J. Voragen;Dominic W.S. Wong

  • Enzymatic browning and its prevention

    Chang Y. Lee;John R. Whitaker

  • Pectic substances, pectic enzymes and haze formation in fruit juices

    John R. Whitaker

  • Kinetics of Papain-Catalyzed Hydrolysis of α-N-Benzoyl-L-arginine Ethyl Ester and α-N-Benzoyl-L-argininamide1

    John R. Whitaker;Myron L. Bender

  • Chemical modification of papain. I. Reaction with the chloromethyl ketones of phenylalanine and lysine and with phenylmethyl-sulfonyl fluoride.

    John R. Whitaker;Javier Perez-Villaseñor

  • Isolation and characterization of polyphenol oxidase isozymes of clingstone peach.

    Thomas C. Wong;Bor S. Luh;John R. Whitaker

  • Effect of ascorbic acid, sodium bisulfite, and thiol compounds on mushroom polyphenol oxidase

    Avi Golan-Goldhirsh;John R. Whitaker

  • Development of flavor, odor, and pungency in onion and garlic.

    John R. Whitaker

  • Effects of alkali on proteins. Disulfides and their products.

    Aws S. Nashef;David T. Osuga;Honson S. Lee;Ahmed I. Ahmed

  • Purification and Some Properties of Two Polyphenol Oxidases from Bartlett Pears

    Nilo de Jesus Rivas;John R. Whitaker

  • Biocatalysis in agricultural biotechnology

    John R. Whitaker;Philip E. Sonnet

  • Purification and Properties of Chlorophyllase from Ailanthus altissima (Tree-of-Heaven)

    Roger F. McFeeters;Clinton O. Chichester;John R. Whitaker

  • Evaluation of the Biuret and Dye-Binding Methods for Protein Determination in Meats

    Judith Torten;J. R. Whitaker

  • Cloning, sequencing, purification, and crystal structure of Grenache (Vitis vinifera) polyphenol oxidase.

    V.M Virador;J.P Reyes Grajeda;A Blanco-Labra;E Mendiola-Olaya

  • Physical, chemical, and nutritional properties of common bean (Phaseolus) proteins.

    Valdemiro C. Sgarbieri;John R. Whitaker

  • PURIFICATION AND SOME PHYSICAL AND CHEMICAL PROPERTIES OF RED KIDNEY BEAN (PHASEOLUS VULGARIS) α‐AMYLASE INHIBITOR

    Joseph R. Powers;John R. Whitaker

  • The Handbook of Food Enzymology

    John R. Whitaker;Alphons G. J. Voragen;Dominic W. S. Wong

Frequent Co-Authors

Robert E. Feeney
Robert E. Feeney University of California, Davis
Alphons G. J. Voragen
Alphons G. J. Voragen Wageningen University & Research
Rickey Y. Yada
Rickey Y. Yada University of British Columbia
Fereidoon Shahidi
Fereidoon Shahidi Memorial University of Newfoundland
Richard W. Hartel
Richard W. Hartel University of Wisconsin–Madison
Al L. Tappel
Al L. Tappel University of California, Davis
Raymond L. Rodriguez
Raymond L. Rodriguez University of California, Davis
Diane M. Barrett
Diane M. Barrett University of California, Davis
Robert M. Hughes
Robert M. Hughes Oregon State University
Paul Gepts
Paul Gepts University of California, Davis

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