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Chemistry
Canada
2025

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 88 2287 2055 49 42 758 28026

Howard Alper publications per year

The chart shows the history of publications by Howard Alper between 1967 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Howard Alper published across 59 years, from 1967 to 2025, averaging 13.1 papers a year. Output peaked at 42 publications in 1995. 7 of the 774 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1967 to 2025. Vertical axis: number of publications, 0 to 42. Peak 42 publications in 1995. 1967: 1 publication 1968: 2 publications 1969: 4 publications 1970: 10 publications 1971: 5 publications 1972: 14 publications 1973: 17 publications 1974: 12 publications 1975: 15 publications 1976: 14 publications 1977: 16 publications 1978: 16 publications 1979: 15 publications 1980: 23 publications 1981: 18 publications 1982: 13 publications 1983: 24 publications 1984: 18 publications 1985: 27 publications 1986: 19 publications 1987: 12 publications 1988: 12 publications 1989: 17 publications 1990: 18 publications 1991: 21 publications 1992: 21 publications 1993: 29 publications 1994: 23 publications 1995: 42 publications 1996: 23 publications 1997: 14 publications 1998: 12 publications 1999: 25 publications 2000: 22 publications 2001: 19 publications 2002: 8 publications 2003: 12 publications 2004: 20 publications 2005: 11 publications 2006: 11 publications 2007: 17 publications 2008: 20 publications 2009: 8 publications 2010: 17 publications 2011: 9 publications 2012: 13 publications 2013: 4 publications 2014: 3 publications 2015: 5 publications 2016: 7 publications 2017: 2 publications 2018: 0 publications 2019: 0 publications 2020: 0 publications 2021: 1 publication 2022: 5 publications 2023: 1 publication 2024: 1 publication 2025: 6 publications
1967 2025

774 publications in total across all disciplines

View publications per year as a table
Howard Alper: publications per year, 1967 to 2025
Year Publications
1967 1
1968 2
1969 4
1970 10
1971 5
1972 14
1973 17
1974 12
1975 15
1976 14
1977 16
1978 16
1979 15
1980 23
1981 18
1982 13
1983 24
1984 18
1985 27
1986 19
1987 12
1988 12
1989 17
1990 18
1991 21
1992 21
1993 29
1994 23
1995 42
1996 23
1997 14
1998 12
1999 25
2000 22
2001 19
2002 8
2003 12
2004 20
2005 11
2006 11
2007 17
2008 20
2009 8
2010 17
2011 9
2012 13
2013 4
2014 3
2015 5
2016 7
2017 2
2018 0
2019 0
2020 0
2021 1
2022 5
2023 1
2024 1
2025 6
Total 774
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Howard Alper 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 Howard Alper 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, 741–760 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: 758 publications — 97th percentile

97% 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
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 67 758
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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Howard Alper 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 Howard Alper 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, 88–89 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: 88 D-Index — 88th percentile

88% 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
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235 88
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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Research.com Recognitions

  • 2025 - Research.com Chemistry in Canada Leader Award
  • 2022 - Research.com Chemistry in Canada Leader Award
  • 2003 - Fellow, The World Academy of Sciences
  • 1997 - Chemical Institute of Canada Medal
  • 1985 - Fellow of John Simon Guggenheim Memorial Foundation
  • 1984 - Fellow of the Royal Society of Canada Academy of Science

Overview

Howard Alper is affiliated with the University of Ottawa in Canada. Their research spans multiple fields, focusing primarily on medicine, health professions, and psychology. Their work incorporates several subfields including occupational therapy, clinical psychology, public health, environmental and occupational health, emergency medicine, and emergency medical services.

The main topics addressed in their research include occupational health and performance, posttraumatic stress disorder research, injury epidemiology and prevention, trauma and emergency care studies, disaster response and management, traffic and road safety, and migration, health, and trauma.

Howard Alper has published extensively, with notable recent papers including:

  • Association Between Socioeconomic Status and Asthma-Related Emergency Department Visits Among World Trade Center Rescue and Recovery Workers and Survivors, 2020, JAMA Network Open
  • Injury Severity and Psychological Distress Sustained in the Aftermath of the Attacks of 11 September 2001 Predict Somatic Symptoms in World Trade Center Health Registry Enrollees Sixteen Years Later, 2020, International Journal of Environmental Research and Public Health
  • Trajectories of psychological distress among individuals exposed to the 9/11 World Trade Center disaster, 2021, Psychological Medicine
  • Post-9/11 Mental Health Comorbidity Predicts Self-Reported Confusion or Memory Loss in World Trade Center Health Registry Enrollees, 2020, International Journal of Environmental Research and Public Health
  • Stroke hospitalizations, posttraumatic stress disorder, and 9/11-related dust exposure: Results from the World Trade Center Health Registry, 2021, American Journal of Industrial Medicine

Frequent coauthors in Howard Alper's collaborations include Robert M. Brackbill, Jennifer Brite, Shengchao Yu, Sean Locke, and James E. Cone.

The most common venues for their publications are the International Journal of Environmental Research and Public Health, the American Journal of Industrial Medicine, Psychological Medicine, JAMA Network Open, and the Journal of Asthma.

Howard Alper has been recognized by various awards and honors, including:

  • Fellow of the Royal Society of Canada, 1984 (Academy of Science)
  • Fellow of John Simon Guggenheim Memorial Foundation, 1985
  • Chemical Institute of Canada Medal, 1997
  • Fellow, The World Academy of Sciences, 2003

Best Publications

  • Transformations of Chloroarenes, Catalyzed by Transition-Metal Complexes

    Vladimir V. Grushin;Howard Alper

  • Metal supported on dendronized magnetic nanoparticles: highly selective hydroformylation catalysts.

    Raed Abu-Reziq;Howard Alper;Dashan Wang;Michael L Post

  • Asymmetric synthesis of acids by the palladium-catalyzed hydrocarboxylation of olefins in the presence of (R)-(-)- or (S)-(+)-1,1'-binaphthyl-2,2'-diyl hydrogen phosphate

    Howard Alper;Nathalie Hamel

  • Activation of Unreactive Bonds and Organic Synthesis

    Shinji Murai;H. Alper;R. A. Gossage;V. V. Grushin

  • Alkali-induced disproportionation of palladium(II) tertiary phosphine complexes, [L2PdCl2], to LO and palladium(O). Key intermediates in the biphasic carbonylation of ArX catalyzed by [L2PdCl2]

    Vladimir V. Grushin;Howard Alper

  • Computer simulations of the dielectric properties of water: Studies of the simple point charge and transferrable intermolecular potential models

    Howard E. Alper;Ronald M. Levy

  • Transition Metal Mediated Carbonylative Ring Expansion of Heterocyclic Compounds

    Kanjai Khumtaveeporn;Howard Alper

  • Enantiospecific and stereospecific rhodium(I)-catalyzed carbonylation and ring expansion of aziridines. Asymmetric synthesis of .beta.-lactams and the kinetic resolution of aziridines

    Serge Calet;Fabio Urso;Howard Alper

  • Regioselective Palladium(II)-Catalyzed Synthesis of Five- or Seven-Membered Ring Lactones and Five-, Six- or Seven-Membered Ring Lactams by Cyclocarbonylation Methodology

    Bassam El Ali;Kazumi Okuro;Giuseppe Vasapollo;Howard Alper

  • Platinum Nanoparticles Supported on Ionic Liquid-Modified Magnetic Nanoparticles: Selective Hydrogenation Catalysts

    Raed Abu-Reziq;Dashan Wang;Michael Post;Howard Alper

  • P,S Ligands for the Asymmetric Construction of Quaternary Stereocenters in Palladium‐Catalyzed Decarboxylative [4+2] Cycloadditions

    Yi Wei;Liang-Qiu Lu;Tian-Ren Li;Bin Feng

  • Hydroformylation Reactions Using Recyclable Rhodium-Complexed Dendrimers on Silica

    S. Christine Bourque and;Howard Alper;Leo E. ManzerPrabhat Arya

  • Magnetic nanoparticle-supported proline as a recyclable and recoverable ligand for the CuI catalyzed arylation of nitrogen nucleophiles.

    Unknown

  • Palladium-catalyzed hydrocarboxylation of alkynes with formic acid

    Davit Zargarian;Howard Alper

  • Hydroformylation Reactions with Rhodium-Complexed Dendrimers on Silica

    Unknown

  • Periodic Mesoporous Silica-Supported Recyclable Rhodium-Complexed Dendrimer Catalysts

    Jan P. K. Reynhardt;Yong Yang;and Abdelhamid Sayari;Howard Alper

  • Highly Ligand-Controlled Regioselective Pd-Catalyzed Aminocarbonylation of Styrenes with Aminophenols.

    Unknown

  • Palladium(0)-Catalyzed Asymmetric Cycloaddition of Vinyloxiranes with Heterocumulenes Using Chiral Phosphine Ligands: An Effective Route to Highly Enantioselective Vinyloxazolidine Derivatives

    Chitchamai Larksarp;Howard Alper

  • Mechanism of Solute Diffusion through Lipid Bilayer Membranes by Molecular Dynamics Simulation

    Donna Bassolino-Klimas;Howard E. Alper;Terry R. Stouch

  • Solute diffusion in lipid bilayer membranes: an atomic level study by molecular dynamics simulation.

    Unknown

  • Regiospecific metal-catalyzed ring expansion of aziridines to .beta.-lactams

    Howard Alper;Fabio Urso;David J. H. Smith

  • A NEW, EFFICIENT, AND IN SOME CASES HIGHLY REGIOSELECTIVE WATER-SOLUBLE POLYMER RHODIUM CATALYST FOR OLEFIN HYDROFORMYLATION

    Abdelaziz Nait Ajjou;Howard Alper

  • Separable Catalysts in One-Pot Syntheses for Greener Chemistry

    Raed Abu-Reziq;Dashan Wang;Michael Post;Howard Alper

  • Novel palladium-catalyzed carbonylation of organic halides by chloroform and alkali

    Vladimir V. Grushin;Howard Alper

Frequent Co-Authors

Vladimir V. Grushin
Vladimir V. Grushin DuPont (United States)
Giuseppe Vasapollo
Giuseppe Vasapollo University of Salento
Anthony C. Willis
Anthony C. Willis Australian National University
Dominique Roberto
Dominique Roberto University of Milan
Cathleen M. Crudden
Cathleen M. Crudden Queen's University
Wen-Jing Xiao
Wen-Jing Xiao Central China Normal University
Wing-Yiu Yu
Wing-Yiu Yu Hong Kong Polytechnic University
Roland Boese
Roland Boese University of Duisburg-Essen
Davit Zargarian
Davit Zargarian University of Montreal
Ferenc Joó
Ferenc Joó University of Debrecen

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