Kent C. Johnson

4.1k citations

107 papers · 3.3k · 2 hit papers · h-index 35

Impact in

Automotive Engineering top 0.2%
- Vehicle emissions and performance
Fluid Flow and Transfer Processes top 0.5%
- Advanced Combustion Engine Technologies

Papers in

Automotive Engineering 92
- Vehicle emissions and performance 91
Health, Toxicology and Mutagenesis 57
- Air Quality and Health Impacts 57

Co-authors: Thomas D. Durbin (76 shared papers)David R. Cocker (32 shared papers)Georgios Karavalakis (43 shared papers)John W. Miller (21 shared papers)Heejung Jung (22 shared papers)Maryam Hajbabaei (11 shared papers)Jiacheng Yang (17 shared papers)Yu Jade Jiang (15 shared papers)
Journals: Environmental Science & Technology (14 papers)Atmospheric Environment (13 papers)SAE technical papers on CD-ROM/SAE technical paper series (12 papers)The Science of The Total Environment (9 papers)Fuel (9 papers)
Partner nations: United States Japan Canada

In The Last Decade

Kent C. Johnson

104 papers receiving 3.1k citations

Kent C. Johnson's Hit Papers

align trajectories log scale

Reduction in greenhouse gas and other emissions from ship engines: Current trends and future options 2022 · 180 citations

What are hit papers?

Paper score: A paper's citations measured against the top-1% bar of its own field and year: the square root of citations ÷ bar, so 1 means right at the bar and 2 means four times its citations. The bar blends the citation counts that enter the top 1% of the paper's subfields in its year (weighted 89.5%), of those subfields over all years (0.5%) and of its year across all fields (10%); a subfield and year with fewer than 400 papers takes its year's bar. Papers from 2026 are not scored yet: in an unfinished year, when a paper appeared matters more than how it is cited.

Hit paper: A paper cited at least 1.5× the top-1% bar of its field and year: a paper score of at least √1.5.

2022 Progress in Energy and Combustion Science
1994 Neurology

Peers

Countries citing papers authored by Kent C. Johnson

Since Specialization

Citations

This map shows the geographic impact of Kent C. Johnson'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 Kent C. Johnson with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Kent C. Johnson more than expected).

Fields of papers citing papers by Kent C. Johnson

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Kent C. Johnson. 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 Kent C. Johnson. The network helps show where Kent C. Johnson may publish in the future.

Co-authors

The 25 scholars most cited alongside Kent C. Johnson, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Kent C. Johnson Line = papers co-authored together Kent C. Johnson links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 107 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Megadose corticosteroids in multiple sclerosis Neurology ·Mark J. Kupersmith, David W. Kaufman, Donald W. Paty, George C. Ebers, H. McFarland, Kent C. Johnson, Stephen C. Reingold, John N. Whitaker Hit paper breakdown →	1994	331
2	Reduction in greenhouse gas and other emissions from ship engines: Current trends and future options Progress in Energy and Combustion Science ·Päivi Aakko-Saksa, Kati Lehtoranta, Niina Kuittinen, Anssi Järvinen, Jukka-Pekka Jalkanen, Kent C. Johnson, Heejung Jung, Leonidas D. Ntziachristos Hit paper breakdown →	2022	180
3	Development and Application of a Mobile Laboratory for Measuring Emissions from Diesel Engines. 1. Regulated Gaseous Emissions Environmental Science & Technology ·David R. Cocker, Sandip D. Shah, Kent C. Johnson, John W. Miller, Joseph M. Norbeck	2004	113
4	Regulated, greenhouse gas, and particulate emissions from lean-burn and stoichiometric natural gas heavy-duty vehicles on different fuel compositions Fuel ·Georgios Karavalakis, Maryam Hajbabaei, Yu Jade Jiang, Jiacheng Yang, Kent C. Johnson, David R. Cocker, Thomas D. Durbin	2016	93
5	On-Board Sensor-Based NOx Emissions from Heavy-Duty Diesel Vehicles Environmental Science & Technology ·Yi Tan, Paul Henderick, Seungju Yoon, Jorn Dinh Herner, Thomas Montes, Kanok Boriboonsomsin, Kent C. Johnson, George A. Scora	2019	85
6	Real-world operation conditions and on-road emissions of Beijing diesel buses measured by using portable emission measurement system and electric low-pressure impactor The Science of The Total Environment ·Zhihua Liu, Yunshan Ge, Kent C. Johnson, Asad Naeem Shah, Jianwei Tan, Chu Wang, Linxiao Yu	2011	80
7	Real-world NOx emissions from heavy-duty diesel, natural gas, and diesel hybrid electric vehicles of different vocations on California roadways The Science of The Total Environment ·Cavan McCaffery, Hanwei Zhu, Tianbo Tang, Chengguo Li, Georgios Karavalakis, Sam Cao, Adewale Oshinuga, Andrew Burnette	2021	75
8	The effect of natural gas composition on the regulated emissions, gaseous toxic pollutants, and ultrafine particle number emissions from a refuse hauler vehicle Energy ·Georgios Karavalakis, Maryam Hajbabaei, Thomas D. Durbin, Kent C. Johnson, Zhongqing Zheng, Wayne J. Miller	2012	74
9	The impact of ethanol and iso-butanol blends on gaseous and particulate emissions from two passenger cars equipped with spray-guided and wall-guided direct injection SI (spark ignition) engines Energy ·Georgios Karavalakis, Daniel Z. Short, Diep Vu, Robert L. Russell, Akua Asa-Awuku, Heejung Jung, Kent C. Johnson, Thomas D. Durbin	2015	73
10	Investigation of solid particle number measurement: Existence and nature of sub-23nm particles under PMP methodology Journal of Aerosol Science ·Zhongqing Zheng, Kent C. Johnson, Zhihua Liu, Thomas D. Durbin, Shaohua Hu, Tao Huai, David B. Kittelson, Heejung Jung	2011	71
11	Impact of natural gas fuel composition on criteria, toxic, and particle emissions from transit buses equipped with lean burn and stoichiometric engines Energy ·Maryam Hajbabaei, Georgios Karavalakis, Kent C. Johnson, Linda Lee, Thomas D. Durbin	2013	70
12	Regulated emissions from biodiesel fuels from on/off-road applications Atmospheric Environment ·Thomas D. Durbin, David R. Cocker, Aniket A. Sawant, Kent C. Johnson, John W. Miller, Bruce Holden, Norman L Helgeson, Jason Jack	2007	69
13	Gasoline Particulate Filters as an Effective Tool to Reduce Particulate and Polycyclic Aromatic Hydrocarbon Emissions from Gasoline Direct Injection (GDI) Vehicles: A Case Study with Two GDI Vehicles Environmental Science & Technology ·Jiacheng Yang, Patrick Roth, Thomas D. Durbin, Kent C. Johnson, David R. Cocker, Akua Asa-Awuku, Rasto Brezny, Michael D. Geller	2018	69
14	Evaluation and Comparison of Portable Emissions Measurement Systems and Federal Reference Methods for Emissions from a Back-Up Generator and a Diesel Truck Operated on a Chassis Dynamometer Environmental Science & Technology ·Thomas D. Durbin, Kent C. Johnson, David R. Cocker, John W. Miller, Hector Maldonado, Atul Shah, Carl Ensfield, Chris Weaver	2007	65
15	Evaluations of in-use emission factors from off-road construction equipment Atmospheric Environment ·Tanfeng Cao, Thomas D. Durbin, Robert L. Russell, David R. Cocker, George A. Scora, Hector Maldonado, Kent C. Johnson	2016	63
16	Real-world exhaust temperature profiles of on-road heavy-duty diesel vehicles equipped with selective catalytic reduction The Science of The Total Environment ·Kanok Boriboonsomsin, Thomas D. Durbin, George A. Scora, Kent C. Johnson, Daniel Sandez, Alexander Vu, Yu Jade Jiang, Andrew Burnette	2018	62
17	Development and Application of a Mobile Laboratory for Measuring Emissions from Diesel Engines. 2. Sampling for Toxics and Particulate Matter Environmental Science & Technology ·David R. Cocker, Sandip D. Shah, Kent C. Johnson, Xiaona Zhu, John W. Miller, Joseph M. Norbeck	2004	60
18	Evaluation of the Impacts of Biodiesel and Second Generation Biofuels on NO x Emissions for CARB Diesel Fuels Environmental Science & Technology ·Maryam Hajbabaei, Kent C. Johnson, Robert A. Okamoto, Alexander Mitchell, Marcie Pullman, Thomas D. Durbin	2012	57
19	Effects of hydrogenated vegetable oil (HVO) and HVO/biodiesel blends on the physicochemical and toxicological properties of emissions from an off-road heavy-duty diesel engine Fuel ·Cavan McCaffery, Hanwei Zhu, C. M. Sabbir Ahmed, Alexa Canchola, Jin Chen, Chengguo Li, Kent C. Johnson, Thomas D. Durbin	2022	54
20	On-road comparison of a portable emission measurement system with a mobile reference laboratory for a heavy-duty diesel vehicle Atmospheric Environment ·Kent C. Johnson, Thomas D. Durbin, David R. Cocker, Wayne J. Miller, Dipak Bishnu, Hector Maldonado, Nate Moynahan, Carl Ensfield	2009	53

About Kent C. Johnson

Kent C. Johnson is a scholar working on Automotive Engineering, Health, Toxicology and Mutagenesis, Fluid Flow and Transfer Processes, Environmental Engineering and Atmospheric Science, having authored 107 papers that have together received 3.3k indexed citations. Recurring topics across this work include Vehicle emissions and performance (91 papers), Air Quality and Health Impacts (57 papers), Advanced Combustion Engine Technologies (27 papers), Air Quality Monitoring and Forecasting (21 papers), Atmospheric chemistry and aerosols (19 papers), Catalytic Processes in Materials Science (13 papers), Energy, Environment, and Transportation Policies (12 papers) and Biodiesel Production and Applications (10 papers). The work is most often cited by research in Automotive Engineering (2.1k citations), Fluid Flow and Transfer Processes (824 citations), Health, Toxicology and Mutagenesis (1.3k citations), Environmental Engineering (657 citations) and Atmospheric Science (550 citations). Kent C. Johnson has collaborated with scholars based in United States, Japan and Canada. Frequent co-authors include Thomas D. Durbin, David R. Cocker, Georgios Karavalakis, John W. Miller, Heejung Jung, Maryam Hajbabaei, Jiacheng Yang, Yu Jade Jiang, Sandip D. Shah and John N. Whitaker. Their work appears in journals such as Environmental Science & Technology, Atmospheric Environment, SAE technical papers on CD-ROM/SAE technical paper series, The Science of The Total Environment and Fuel.

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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Kent C. Johnson

Kent C. Johnson's Hit Papers

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