World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
86
Citations
34356
World Ranking
2923
National Ranking
1497

Robert A. Floyd publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Robert A. Floyd sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 418 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 197 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 60 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 286 publications — 76th percentile

76% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

Robert A. Floyd D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Robert A. Floyd sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 72 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 86 D-Index — 85th percentile

85% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Overview

Robert A. Floyd is affiliated with the Oklahoma Medical Research Foundation in the United States. Their research integrates multiple disciplines, primarily focusing on medicine and engineering, with specific attention to subfields such as Pulmonary and Respiratory Medicine, Radiology, Nuclear Medicine and Imaging, and Electrical and Electronic Engineering.

The scientist's work addresses complex topics that cross traditional domain boundaries, including Brain Metastases and Treatment, Radiopharmaceutical Chemistry and Applications, and Semiconductor Materials and Devices.

Recent scholarly contributions include the paper titled "MMAP-17 MANAGEMENT OF MELANOMA BRAIN METASTASES WITH IPILIMUMAB AND NIVOLUMAB WITH OR WITHOUT UPFRONT COMPREHENSIVE STEREOTACTIC RADIOSURGERY", published in 2025 in the journal Neuro-Oncology Advances. This publication forms part of Floyd's focused investigations on therapeutic approaches for brain metastases, integrating immunotherapy and radiosurgery techniques.

Frequent collaborators in their research projects include:

  • T. Kleber
  • Denái R. Milton
  • Subasree Srinivasan
  • Bikash Panthi
  • Michael A. Davies

Their work has appeared in venues such as:

  • Neuro-Oncology Advances

Floyd's interdisciplinary expertise encompasses key studies in Medicine, where they have contributed to both clinical and translational research, and Engineering, supporting technological and methodological advancements related to imaging and electronic devices. The subfields of their work highlight their involvement in highly specialized areas like pulmonary medicine, advanced imaging technologies, and electronic engineering, reflecting a broad yet interconnected research portfolio.

Topics commonly explored in their publications include:

  • Brain Metastases and Treatment
  • Radiopharmaceutical Chemistry and Applications
  • Semiconductor materials and devices

Best Publications

  • Excess brain protein oxidation and enzyme dysfunction in normal aging and in Alzheimer disease.

    C D Smith;J M Carney;P E Starke-Reed;C N Oliver

  • Reactive oxygen species, cell signaling, and cell injury.

    Hensley K;Robinson Ka;Gabbita Sp;Salsman S

  • Role of oxygen free radicals in carcinogenesis and brain ischemia.

    Robert A. Floyd

  • ANTIOXIDANTS, OXIDATIVE STRESS, AND DEGENERATIVE NEUROLOGICAL DISORDERS

    Robert A. Floyd

  • Oxidative stress in brain aging: Implications for therapeutics of neurodegenerative diseases

    Robert A Floyd;Robert A Floyd;Kenneth Hensley

  • The role of 8-hydroxyguanine in carcinogenesis.

    Robert A. Floyd

  • Oxidative damage to brain proteins, loss of glutamine synthetase activity, and production of free radicals during ischemia/reperfusion-induced injury to gerbil brain.

    C N Oliver;P E Starke-Reed;E R Stadtman;G J Liu

  • Biomarkers of oxidative stress study II : are oxidation products of lipids, proteins, and DNA markers of CCl4 poisoning?

    M.B. Kadiiska;B.C. Gladen;D.D. Baird;D. Germolec

  • Free radical damage to protein and DNA : mechanisms involved and relevant observations on brain undergoing oxidative stress

    Robert A. Floyd;John M. Carney

  • Electrochemical Analysis of Protein Nitrotyrosine and Dityrosine in the Alzheimer Brain Indicates Region-Specific Accumulation

    Kenneth Hensley;Michael L. Maidt;Zhenqiang Yu;Hong Sang

  • Oxygen free radical involvement in ischemia and reperfusion injury to brain

    W. Cao;J.M. Carney;A. Duchon;R.A. Floyd

  • Sensitive assay of hydroxyl free radical formation utilizing high pressure liquid chromatography with electrochemical detection of phenol and salicylate hydroxylation products

    Robert A. Floyd;Julia J. Watson;Peter K. Wong

  • p38 kinase is activated in the Alzheimer's disease brain.

    Kenneth Hensley;Robert A. Floyd;Nai-Ying Zheng;Raha Nael

  • New perspectives on vitamin E: γ-tocopherol and carboxyethylhydroxychroman metabolites in biology and medicine

    Kenneth Hensley;Elaine J. Benaksas;Roberto Bolli

  • Nordihydroguaiaretic acid and aspirin increase lifespan of genetically heterogeneous male mice.

    Randy Strong;Richard A. Miller;Richard A. Miller;Clinton M. Astle;Robert A. Floyd;Robert A. Floyd

  • Regional lipid peroxidation in rat brain in vitro: possible role of endogenous iron

    Malgorzata M. Zaleska;Robert A. Floyd

  • Neuroinflammatory processes are important in neurodegenerative diseases: an hypothesis to explain the increased formation of reactive oxygen and nitrogen species as major factors involved in neurodegenerative disease development.

    Robert A Floyd

  • Reactive Oxygen Species and Protein Oxidation in Aging: A Look Back, A Look Ahead

    Kenneth Hensley;Robert A. Floyd

  • Methylene blue plus light mediates 8-hydroxyguanine formation in DNA.

    R.A. Floyd;M.S. West;K.L. Eneff;J.E. Schneider

  • Association between reactive oxygen species and disease activity in chronic hepatitis C.

    Nicola De Maria;Alessandra Colantonl;Stefano Fagiuoli;Guang-Jun Liu

Frequent Co-Authors

Kenneth Hensley
Kenneth Hensley University of Toledo
Paula Grammas
Paula Grammas University of Rhode Island
Earl R. Stadtman
Earl R. Stadtman National Institutes of Health
William R. Markesbery
William R. Markesbery University of Kentucky
Dirk P. Dittmer
Dirk P. Dittmer University of North Carolina at Chapel Hill
Robert E. Anderson
Robert E. Anderson University of Oklahoma Health Sciences Center
Jian Xing Ma
Jian Xing Ma University of Oklahoma Health Sciences Center
David T. Tingey
David T. Tingey Environmental Protection Agency
Guoying Bing
Guoying Bing University of Kentucky
David H. Van Thiel
David H. Van Thiel Rush University Medical Center

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