Zobrazeno 1 - 10
of 418
pro vyhledávání: '"W A, Walters"'
Publikováno v:
Geoscientific Model Development, Vol 17, Pp 4673-4687 (2024)
The oxygen isotope anomaly (Δ17O = δ17O − 0.52 × δ18O > 0) has proven to be a robust tool for probing photochemical cycling and atmospheric formation pathways of oxidized reactive nitrogen (NOy). Several studies have developed modeling techniqu
Externí odkaz:
https://doaj.org/article/3e9afe0b4cb444f4a4809c4654ea0498
Autor:
Rui Zhang, Babak Mahjour, Andrew Outlaw, Andrew McGrath, Tim Hopper, Brian Kelley, W. Patrick Walters, Tim Cernak
Publikováno v:
Communications Chemistry, Vol 7, Iss 1, Pp 1-13 (2024)
Abstract Amines and carboxylic acids are abundant chemical feedstocks that are nearly exclusively united via the amide coupling reaction. The disproportionate use of the amide coupling leaves a large section of unexplored reaction space between amine
Externí odkaz:
https://doaj.org/article/f6e4602ac3b849a99ddc27ac6ea522a8
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 4185-4201 (2023)
Despite significant precursor emission reductions in the US over recent decades, atmospheric nitrate deposition remains an important terrestrial stressor. Here, we utilized statistical air mass back trajectory analysis and nitrogen stable isotope del
Externí odkaz:
https://doaj.org/article/5aafa09044f14e4a8d8ed7004f05c288
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 4203-4219 (2023)
The northeastern US represents a mostly urban corridor impacted by high population and fossil fuel combustion emission density. This has led to historically degraded air quality and acid rain that has been a focus of regulatory-driven emissions reduc
Externí odkaz:
https://doaj.org/article/429e6d318e5542ea923e8652c2d3f953
Autor:
James Thompson, W Patrick Walters, Jianwen A Feng, Nicolas A Pabon, Hongcheng Xu, Brian B Goldman, Demetri Moustakas, Molly Schmidt, Forrest York
Publikováno v:
Artificial Intelligence in the Life Sciences, Vol 3, Iss , Pp 100074- (2023)
Externí odkaz:
https://doaj.org/article/38729ea392e043bb89ec2e372de9b12e
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 13431-13448 (2022)
Atmospheric ammonia (NH3) is a critical component of our atmosphere that contributes to air quality degradation and reactive nitrogen deposition; however, our knowledge of NH3 in urban environments remains limited. Year-long ambient NH3 and related s
Externí odkaz:
https://doaj.org/article/54bb0d6762354bffaac201253b3eecdf
Autor:
James Thompson, W Patrick Walters, Jianwen A Feng, Nicolas A Pabon, Hongcheng Xu, Brian B Goldman, Demetri Moustakas, Molly Schmidt, Forrest York
Publikováno v:
Artificial Intelligence in the Life Sciences, Vol 2, Iss , Pp 100050- (2022)
While Relative Binding Free Energy (RBFE) calculations have become a mainstay in lead optimization programs, the computational expense of performing these calculations has limited their broader application. Active learning (AL), a machine learning me
Externí odkaz:
https://doaj.org/article/ddb6aa44a7cb41bfb5fdeed6a3246b71
Autor:
J. Chai, J. E. Dibb, B. E. Anderson, C. Bekker, D. E. Blum, E. Heim, C. E. Jordan, E. E. Joyce, J. H. Kaspari, H. Munro, W. W. Walters, M. G. Hastings
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 13077-13098 (2021)
Nitrous acid (HONO) is an important precursor to hydroxyl radical (OH) that determines atmospheric oxidative capacity and thus impacts climate and air quality. Wildfire is not only a major direct source of HONO, it also results in highly polluted con
Externí odkaz:
https://doaj.org/article/d63a0f6f91cf4c5d9aa577bbf1c30d68
Publikováno v:
Geoscientific Model Development, Vol 14, Pp 5001-5022 (2021)
Nitrogen oxides, classified as NOx (nitric oxide (NO) + nitrogen dioxide (NO2)) and NOy (NOx+ NO3, N2O5 HNO3, + HNO4+ HONO + Peroxyacetyl nitrate (PAN) + organic nitrates + any oxidized N compound), are important trace gases in the troposphere, which
Externí odkaz:
https://doaj.org/article/7934641e0f0c4e90acd93bdf570937f3
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 11551-11567 (2020)
Vehicle emissions have been identified as an important urban source of ammonia (NH3). However, there are large uncertainties regarding the contribution of vehicle emissions to urban NH3 budgets, as well as the role of NH3 in spatiotemporal fine parti
Externí odkaz:
https://doaj.org/article/10d52c4384ab432bbae59fd760b5130d