Robert A. Okamoto

829 total citations
21 papers, 674 citations indexed

About

Robert A. Okamoto is a scholar working on Health, Toxicology and Mutagenesis, Automotive Engineering and Fluid Flow and Transfer Processes. According to data from OpenAlex, Robert A. Okamoto has authored 21 papers receiving a total of 674 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Health, Toxicology and Mutagenesis, 13 papers in Automotive Engineering and 5 papers in Fluid Flow and Transfer Processes. Recurrent topics in Robert A. Okamoto's work include Vehicle emissions and performance (13 papers), Air Quality and Health Impacts (12 papers) and Toxic Organic Pollutants Impact (6 papers). Robert A. Okamoto is often cited by papers focused on Vehicle emissions and performance (13 papers), Air Quality and Health Impacts (12 papers) and Toxic Organic Pollutants Impact (6 papers). Robert A. Okamoto collaborates with scholars based in United States, Brazil and Germany. Robert A. Okamoto's co-authors include Norman Y. Kado, Reiko Kobayashi, Paul A. Kuzmicky, Alberto Ayala, Bruno Spinosa De Martinis, Lilian Rothschild Franco de Carvalho, Lara A. Gundel, Randy L. Maddalena, Paul Rieger and Thomas M. Cahill and has published in prestigious journals such as Environmental Science & Technology, Journal of Agricultural and Food Chemistry and Chemosphere.

In The Last Decade

Robert A. Okamoto

21 papers receiving 625 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Robert A. Okamoto United States	16	374	317	165	137	107	21	674
Luigi Turrio‐Baldassarri Italy	15	583 1.6×	217 0.7×	185 1.1×	192 1.4×	125 1.2×	27	904
Jen-Hsiung Tsai Taiwan	16	383 1.0×	210 0.7×	171 1.0×	237 1.7×	73 0.7×	37	686
Frank Black United States	15	230 0.6×	309 1.0×	160 1.0×	90 0.7×	26 0.2×	38	560
V. Beránek Czechia	12	193 0.5×	120 0.4×	73 0.4×	88 0.6×	81 0.8×	24	386
Olaf Schröder Germany	18	243 0.6×	320 1.0×	481 2.9×	657 4.8×	214 2.0×	55	1.0k
Shu-Mei Chien Taiwan	8	218 0.6×	200 0.6×	158 1.0×	186 1.4×	37 0.3×	9	462
Ronald L. Bradow United States	13	235 0.6×	300 0.9×	113 0.7×	50 0.4×	27 0.3×	29	547
Ioannis Sadiktsis Sweden	15	395 1.1×	106 0.3×	47 0.3×	93 0.7×	169 1.6×	26	666
Robin Nyström Sweden	11	481 1.3×	128 0.4×	38 0.2×	82 0.6×	184 1.7×	16	668
Xi Jiang China	9	405 1.1×	323 1.0×	55 0.3×	40 0.3×	25 0.2×	12	528

Countries citing papers authored by Robert A. Okamoto

Since Specialization

Citations

This map shows the geographic impact of Robert A. Okamoto's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Robert A. Okamoto with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Robert A. Okamoto more than expected).

Fields of papers citing papers by Robert A. Okamoto

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Robert A. Okamoto. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Robert A. Okamoto. The network helps show where Robert A. Okamoto may publish in the future.

Co-authorship network of co-authors of Robert A. Okamoto

This figure shows the co-authorship network connecting the top 25 collaborators of Robert A. Okamoto. A scholar is included among the top collaborators of Robert A. Okamoto based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Robert A. Okamoto. Robert A. Okamoto is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Vogel, Christoph F. A., Sarah Y. Kado, Reiko Kobayashi, et al.. (2018). Inflammatory marker and aryl hydrocarbon receptor-dependent responses in human macrophages exposed to emissions from biodiesel fuels. Chemosphere. 220. 993–1002. 29 indexed citations

Na, Kwangsam, et al.. (2015). Impact of biodiesel and renewable diesel on emissions of regulated pollutants and greenhouse gases on a 2000 heavy duty diesel truck. Atmospheric Environment. 107. 307–314. 46 indexed citations

Hajbabaei, Maryam, Kent C. Johnson, Robert A. Okamoto, & Thomas D. Durbin. (2013). Evaluation of the Impacts of Biofuels on Emissions for a California Certified Diesel Fuel from Heavy-Duty Engines. SAE international journal of fuels and lubricants. 6(2). 393–406. 18 indexed citations

Cahill, Thomas M. & Robert A. Okamoto. (2012). Emissions of Acrolein and Other Aldehydes from Biodiesel-Fueled Heavy-Duty Vehicles. Environmental Science & Technology. 46(15). 8382–8388. 24 indexed citations

Hajbabaei, Maryam, et al.. (2012). Evaluation of the Impacts of Biodiesel and Second Generation Biofuels on NO_x Emissions for CARB Diesel Fuels. Environmental Science & Technology. 46(16). 9163–9173. 51 indexed citations

Kobayashi, Reiko, Robert A. Okamoto, Randy L. Maddalena, & Norman Y. Kado. (2008). Polycyclic aromatic hydrocarbons in edible grain: A pilot study of agricultural crops as a human exposure pathway for environmental contaminants using wheat as a model crop. Environmental Research. 107(2). 145–151. 50 indexed citations

Kobayashi, Reiko, Thomas M. Cahill, Robert A. Okamoto, Randy L. Maddalena, & Norman Y. Kado. (2007). Controlled Exposure Chamber Study of Uptake and Clearance of Airborne Polycyclic Aromatic Hydrocarbons by Wheat Grain. Environmental Science & Technology. 41(22). 7934–7940. 19 indexed citations

Okamoto, Robert A., Norman Y. Kado, Paul A. Kuzmicky, Alberto Ayala, & Reiko Kobayashi. (2005). Unregulated Emissions from Compressed Natural Gas (CNG) Transit Buses Configured with and without Oxidation Catalyst. Environmental Science & Technology. 40(1). 332–341. 23 indexed citations

Kado, Norman Y., Robert A. Okamoto, Paul A. Kuzmicky, et al.. (2005). Emissions of Toxic Pollutants from Compressed Natural Gas and Low Sulfur Diesel-Fueled Heavy-Duty Transit Buses Tested over Multiple Driving Cycles. Environmental Science & Technology. 39(19). 7638–7649. 101 indexed citations

10.

Ayala, Alberto, et al.. (2003). CNG and Diesel Transit Bus Emissions in Review. University of North Texas Digital Library (University of North Texas). 7 indexed citations

11.

Lev-On, Miriam, Ken Kimura, Teresa L. Alleman, et al.. (2002). Speciation of Organic Compounds from the Exhaust of Trucks and Buses: Effect of Fuel and After-Treatment on Vehicle Emission Profiles. SAE technical papers on CD-ROM/SAE technical paper series. 1. 29 indexed citations

12.

Martinis, Bruno Spinosa De, Robert A. Okamoto, Norman Y. Kado, Lara A. Gundel, & Lilian Rothschild Franco de Carvalho. (2002). Polycyclic aromatic hydrocarbons in a bioassay-fractionated extract of PM10 collected in São Paulo, Brazil. Atmospheric Environment. 36(2). 307–314. 60 indexed citations

13.

Ayala, Alberto, Norman Y. Kado, Robert A. Okamoto, et al.. (2002). Diesel and CNG Heavy-duty Transit Bus Emissions over Multiple Driving Schedules: Regulated Pollutants and Project Overview. SAE technical papers on CD-ROM/SAE technical paper series. 1. 76 indexed citations

14.

Kado, Norman Y., Paul A. Kuzmicky, & Robert A. Okamoto. (2001). Environmental and Occupational Exposure to Toxic Air Pollutants from Winter Snowmobile Use in Yellowstone National Park FINAL REPORT. 2 indexed citations

15.

Kado, Norman Y., et al.. (2000). Airborne Particle Emissions from 2- and 4-Stroke Outboard Marine Engines: Polycyclic Aromatic Hydrocarbon and Bioassay Analyses. Environmental Science & Technology. 34(13). 2714–2720. 26 indexed citations

16.

Martinis, Bruno Spinosa De, Norman Y. Kado, Lilian Rothschild Franco de Carvalho, Robert A. Okamoto, & Lara A. Gundel. (1999). Genotoxicity of fractionated organic material in airborne particles from São Paulo, Brazil. Mutation Research/Genetic Toxicology and Environmental Mutagenesis. 446(1). 83–94. 52 indexed citations

17.

Kado, Norman Y., Robert A. Okamoto, & Paul A. Kuzmicky. (1996). Chemical and Bioassay Analyses of Diesel and Biodiesel Particulate Matter: Pilot Study. 6 indexed citations

18.

Kado, Norman Y., et al.. (1996). Integrated supercritical fluid extraction, bioassay and chemical screening methods for analyzing vapor-phase compounds of an environmental complex mixture: Diesel exhaust. Chemosphere. 33(3). 495–516. 14 indexed citations

19.

Needles, Howard L., et al.. (1987). Adhesion at the Interface in Cured Graphite Fiber Epoxy-Amine Resin Composites. Journal of Reinforced Plastics and Composites. 6(4). 357–366. 2 indexed citations

20.

Okamoto, Robert A., et al.. (1981). Volatile terpenes in Sequoia sempervirens foliage. Changes in composition during maturation. Journal of Agricultural and Food Chemistry. 29(2). 324–326. 17 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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