| Near-field characterization of methane emission variability from a compressor station using a model aircraft BJ Nathan, LM Golston, AS O’Brien, K Ross, WA Harrison, L Tao, DJ Lary, ... Environmental science & technology 49 (13), 7896-7903, 2015 | 105 | 2015 |
| Greenhouse gas emissions and fuel efficiency of in-use high horsepower diesel, dual fuel, and natural gas engines for unconventional well development DR Johnson, R Heltzel, AC Nix, N Clark, M Darzi Applied energy 206, 739-750, 2017 | 81 | 2017 |
| Pump-to-wheels methane emissions from the heavy-duty transportation sector NN Clark, DL McKain, DR Johnson, WS Wayne, H Li, V Akkerman, ... Environmental science & technology 51 (2), 968-976, 2017 | 67 | 2017 |
| Methane emissions from leak and loss audits of natural gas compressor stations and storage facilities DR Johnson, AN Covington, NN Clark Environmental science & technology 49 (13), 8132-8138, 2015 | 53 | 2015 |
| Low pressure direct injection strategies effect on a small SI natural gas two-stroke engine’s energy distribution and emissions M Darzi, D Johnson, C Ulishney, N Clark Applied energy 230, 1585-1602, 2018 | 33 | 2018 |
| Methods to improve combustion stability, efficiency, and power density of a small, port-injected, spark-ignited, two-stroke natural gas engine D Johnson, M Darzi, C Ulishney, M Bade, N Zamani Internal Combustion Engine Division Fall Technical Conference 58325, V002T07A008, 2017 | 26 | 2017 |
| Future methane emissions from the heavy-duty natural gas transportation sector for stasis, high, medium, and low scenarios in 2035 NN Clark, DR Johnson, DL McKain, WS Wayne, H Li, J Rudek, ... Journal of the Air & Waste Management Association 67 (12), 1328-1341, 2017 | 22 | 2017 |
| An optimization method for flexural bearing design for high-stroke high-frequency applications NZ Meymian, NN Clark, T Musho, M Darzi, D Johnson, P Famouri Cryogenics 95, 82-94, 2018 | 21 | 2018 |
| Temporal Variations in Methane Emissions from an Unconventional Well Site D Johnson, D Heltzel, Rovert, and Oliver ACS Omega 4 (2), 3708-3715, 2019 | 20 | 2019 |
| Baseline evaluation of ignition timing and compression ratio configurations on efficiency and combustion stability of a small-bore, two-stroke, natural gas engine M Darzi, D Johnson, C Ulishney, M Bade, N Zamani ASME International Mechanical Engineering Congress and Exposition 58417 …, 2017 | 18 | 2017 |
| Regulated gaseous emissions from in-use high horsepower drilling and hydraulic fracturing engines D Johnson, R Heltzel, A Nix, N Clark, M Darzi Journal of Pollution Effects & Control 5, 187, 2017 | 17 | 2017 |
| Methane emissions measurements of natural gas components using a utility terrain vehicle and portable methane quantification system D Johnson, R Heltzel Atmospheric environment 144, 1-7, 2016 | 17 | 2016 |
| Design and Testing of an Independently Controlled Urea SCR Retrofit System for the Reduction of NOx Emissions from Marine Diesels DR Johnson, CR Bedick, NN Clark, DL McKain Jr Environmental science & technology 43 (10), 3959-3963, 2009 | 16 | 2009 |
| Gaseous fuels variation effects on first and second law analyses of a small direct injection engine for micro-CHP systems M Darzi, D Johnson, C Ulishney, D Oliver Energy conversion and management 184, 609-625, 2019 | 15 | 2019 |
| Methane emissions from oil and gas production sites and their storage tanks in West Virginia D Johnson, N Clark, R Heltzel, M Darzi, TL Footer, S Herndon, ED Thoma Atmospheric Environment: X 16, 100193, 2022 | 14 | 2022 |
| Design and use of a Full Flow Sampling System (FFS) for the quantification of methane emissions DR Johnson, AN Covington, NN Clark JoVE (Journal of Visualized Experiments), e54179, 2016 | 14 | 2016 |
| Continuous OTM 33A analysis of controlled releases of methane with various time periods, data rates and wind filters RS Heltzel, MT Zaki, AK Gebreslase, OI Abdul-Aziz, DR Johnson Environments 7 (9), 65, 2020 | 12 | 2020 |
| Continuously varying exhaust outlet diameter to improve efficiency and emissions of a small SI natural gas two-stroke engine by internal EGR M Darzi, D Johnson, RMB Bade, C Ulishney, NZ Meymian, N Clark, ... SAE Technical Paper, 2018 | 12 | 2018 |
| Quantification of energy pathways and gas exchange of a small port injection SI two-stroke natural gas engine operating on different exhaust configurations M Darzi, D Johnson, C Ulishney, RMB Bade, NZ Meymian, G Thompson, ... SAE Technical Paper, 2018 | 12 | 2018 |
| Sensitivity analysis and control methodology for linear engine alternator M Bade, N Clark, P Famouri, PD Guggilapu, M Darzi, D Johnson SAE International Journal of Advances and Current Practices in Mobility 1 …, 2019 | 10 | 2019 |
Andrew NixWest Virginia UniversityVerified email at mail.wvu.edu
