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D-Index & Metrics

Discipline name D-Index World Ranking National Ranking Publications Citations
Chemistry 73 4983 1554 348 18370

Larry K. Keefer publications per year

The chart shows the history of publications by Larry K. Keefer between 1966 and 2023, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Larry K. Keefer published across 58 years, from 1966 to 2023, averaging 7 papers a year. Output peaked at 31 publications in 2010. 4 of the 407 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1966 to 2023. Vertical axis: number of publications, 0 to 31. Peak 31 publications in 2010. 1966: 1 publication 1967: 2 publications 1968: 0 publications 1969: 0 publications 1970: 3 publications 1971: 2 publications 1972: 3 publications 1973: 4 publications 1974: 0 publications 1975: 3 publications 1976: 2 publications 1977: 3 publications 1978: 2 publications 1979: 2 publications 1980: 0 publications 1981: 5 publications 1982: 2 publications 1983: 6 publications 1984: 1 publication 1985: 4 publications 1986: 4 publications 1987: 4 publications 1988: 9 publications 1989: 7 publications 1990: 12 publications 1991: 9 publications 1992: 7 publications 1993: 18 publications 1994: 12 publications 1995: 10 publications 1996: 14 publications 1997: 9 publications 1998: 11 publications 1999: 8 publications 2000: 9 publications 2001: 18 publications 2002: 13 publications 2003: 14 publications 2004: 7 publications 2005: 10 publications 2006: 15 publications 2007: 12 publications 2008: 22 publications 2009: 14 publications 2010: 31 publications 2011: 20 publications 2012: 12 publications 2013: 13 publications 2014: 7 publications 2015: 6 publications 2016: 1 publication 2017: 0 publications 2018: 0 publications 2019: 0 publications 2020: 0 publications 2021: 0 publications 2022: 0 publications 2023: 4 publications
1966 2023

407 publications in total across all disciplines

View publications per year as a table
Larry K. Keefer: publications per year, 1966 to 2023
Year Publications
1966 1
1967 2
1968 0
1969 0
1970 3
1971 2
1972 3
1973 4
1974 0
1975 3
1976 2
1977 3
1978 2
1979 2
1980 0
1981 5
1982 2
1983 6
1984 1
1985 4
1986 4
1987 4
1988 9
1989 7
1990 12
1991 9
1992 7
1993 18
1994 12
1995 10
1996 14
1997 9
1998 11
1999 8
2000 9
2001 18
2002 13
2003 14
2004 7
2005 10
2006 15
2007 12
2008 22
2009 14
2010 31
2011 20
2012 12
2013 13
2014 7
2015 6
2016 1
2017 0
2018 0
2019 0
2020 0
2021 0
2022 0
2023 4
Total 407
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Larry K. Keefer 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 Larry K. Keefer 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, 341–360 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: 348 publications — 73rd percentile

73% 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
281–300 939
301–320 764
321–340 643
341–360 628 348
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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Larry K. Keefer 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 Larry K. Keefer 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, 72–73 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: 73 D-Index — 73rd percentile

73% 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
68–69 683
70–71 646
72–73 561 73
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

Larry K. Keefer was a researcher affiliated with Science Applications International Corporation in the United States. Throughout their career, they contributed to scientific knowledge specifically through publications in notable academic venues.

Their recent publication record includes a paper titled Index, Volume 28, 2023, published in 2023 in the journal Critical Reviews™ in Oncogenesis. This paper reflected their engagement with topics related to oncogenesis and critical reviews within that domain.

Frequent collaborations were a part of their scientific activity. Some of the coauthors who worked with Larry K. Keefer multiple times were:

  • Paul J. Shami
  • Khosrow Kashfi
  • Paul Shami Bio
  • Bio Vii
  • Karen Keefer Tribute

Larry K. Keefer published primarily in the venue Critical Reviews™ in Oncogenesis. This indicates a focus on critical evaluation and review of research related to cancer and its biological mechanisms.

Best Publications

  • Complexes of 'NO with Nucleophiles as Agents for the Controlled Biological Release of Nitric Oxide. Vasorelaxant Effects

    Chris M. Maragos;Deborah Morley;David A. Wink;Tambra M. Dunams

  • New nitric oxide-releasing zwitterions derived from polyamines

    Joseph A. Hrabie;John R. Klose;David A. Wink;Larry K. Keefer

  • "NONOates" (1-substituted diazen-1-ium-1,2-diolates) as nitric oxide donors: convenient nitric oxide dosage forms

    Larry K. Keefer;Raymond W. Nims;Keith M. Davies;David A. Wink

  • Chemistry of the nitric oxide-releasing diazeniumdiolate ("nitrosohydroxylamine") functional group and its oxygen-substituted derivatives.

    Joseph A. Hrabie;Larry K. Keefer

  • Preparation and characterization of hydrophobic polymeric films that are thromboresistant via nitric oxide release

    Kelly A. Mowery;Mark H. Schoenfisch;Joseph E. Saavedra;Larry K. Keefer

  • Complexes of nitric oxide with nucleophiles as agents for the controlled biological release of nitric oxide: hemodynamic effect in the rabbit.

    Jean G. Diodati;Arshed A. Quyyumi;Larry K. Keefer

  • Quantitative Measurement of Endogenous Estrogens and Estrogen Metabolites in Human Serum by Liquid Chromatography-Tandem Mass Spectrometry

    Xia Xu;John M. Roman;Haleem J. Issaq;Larry K. Keefer

  • Measuring fifteen endogenous estrogens simultaneously in human urine by high-performance liquid chromatography-mass spectrometry.

    Xia Xu;Timothy D Veenstra;Stephen D Fox;John M Roman

  • Nitric Oxide-Releasing Polymers Containing the (N(O)NO) - Group

    Daniel J. Smith;Debashish Chakravarthy;Sharon Pulfer;Maia L. Simmons

  • Key bioactive reaction products of the NO/H2S interaction are S/N-hybrid species, polysulfides, and nitroxyl

    Miriam M. Cortese-Krott;Gunter G. C. Kuhnle;Alex Dyson;Bernadette O. Fernandez

  • Chemistry of the diazeniumdiolates. 2. Kinetics and mechanism of dissociation to nitric oxide in aqueous solution.

    Keith M. Davies;David A. Wink;and Joseph E. Saavedra;Larry K. Keefer

  • Implants, prostheses, and stents comprising polymer-bound nitric oxide/nucleophile adducts capable of releasing nitric oxide

    Larry K. Keefer;Joseph A. Hrabie

  • Hypoxic Mammalian Cell Radiosensitization by Nitric Oxide

    James B. Mitchell;David A. Wink;William DeGraff;Janet Gamson

  • Overexpression of glutathione S-transferase II and multidrug resistance transport proteins is associated with acquired tolerance to inorganic arsenic.

    Jie Liu;Hua Chen;David S. Miller;Joseph E. Saavedra

  • Esterase-sensitive nitric oxide donors of the diazeniumdiolate family: in vitro antileukemic activity.

    Joseph E. Saavedra;Paul J. Shami;Lai Yi Wang;Keith M. Davies

  • Polymer-bound nitric oxide/nucleophile adduct compositions, pharmaceutical compositions incorporating same and methods of treating biological disorders using same

    Larry K. Keefer;Joseph A. Hrabie

  • Diazeniumdiolates: pro- and antioxidant applications of the "NONOates".

    Anthony L. Fitzhugh;Larry K. Keefer

  • Nitric oxide/nucleophile complexes: a unique class of nitric oxide-based vasodilators

    Deborah Morley;Larry K. Keefer

  • Differential effects of nonselective nitric oxide synthase (NOS) and selective inducible NOS inhibition on hepatic necrosis, apoptosis, ICAM-1 expression, and neutrophil accumulation during endotoxemia.

    Junhai Ou;Timothy M. Carlos;Simon C. Watkins;Joseph E. Saavedra

  • Induction of proliferative lesions of the uterus, testes, and liver in Swiss mice given repeated injections of sodium arsenate : Possible estrogenic mode of action

    Michael P. Waalkes;Larry K. Keefer;Bhalchandra A. Diwan

  • The preparation and properties of some nitrosamino acids.

    Unknown

Frequent Co-Authors

Joseph E. Saavedra
Joseph E. Saavedra National Institutes of Health
David A. Wink
David A. Wink National Institutes of Health
Michael P. Waalkes
Michael P. Waalkes National Institutes of Health
Clifford George
Clifford George United States Naval Research Laboratory
Peter P. Roller
Peter P. Roller National Institutes of Health
Xinhua Ji
Xinhua Ji National Institutes of Health
Jeffrey R. Deschamps
Jeffrey R. Deschamps United States Naval Research Laboratory
Paul Kleihues
Paul Kleihues University of Zurich
Timothy D. Veenstra
Timothy D. Veenstra Lake Erie College of Osteopathic Medicine
Judith L. Flippen-Anderson
Judith L. Flippen-Anderson United States Naval Research Laboratory

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