Zobrazeno 1 - 10 of 21 pro vyhledávání: '"J. A. Ducker"'
1
Akademický článek
Development of an ecophysiology module in the GEOS-Chem chemical transport model version 12.2.0 to represent biosphere–atmosphere fluxes relevant for ozone air quality
Autor: J. C. Y. Lam, A. P. K. Tai, J. A. Ducker, C. D. Holmes
Publikováno v: Geoscientific Model Development, Vol 16, Pp 2323-2342 (2023)
Ground-level ozone (O3) is a major air pollutant that adversely affects human health and ecosystem productivity. Removal of tropospheric O3 by plant stomatal uptake can in turn cause damage to plant tissues with ramifications for ecosystem and crop h
Externí odkaz: https://doaj.org/article/6cdc1983ee6347289e9ce46a9e0b4849
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2
Akademický článek
Influence of plant ecophysiology on ozone dry deposition: comparing between multiplicative and photosynthesis-based dry deposition schemes and their responses to rising CO2 level
Autor: S. Sun, A. P. K. Tai, D. H. Y. Yung, A. Y. H. Wong, J. A. Ducker, C. D. Holmes
Publikováno v: Biogeosciences, Vol 19, Pp 1753-1776 (2022)
Dry deposition is a key process for surface ozone (O3) removal. Stomatal uptake is a major component of O3 dry deposition, which is parameterized differently in current land surface models and chemical transport models. We developed and used a standa
Externí odkaz: https://doaj.org/article/c309c9f5f7994ccc88a4b6f939ff20f6
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3
Akademický článek
Synthetic ozone deposition and stomatal uptake at flux tower sites
Autor: J. A. Ducker, C. D. Holmes, T. F. Keenan, S. Fares, A. H. Goldstein, I. Mammarella, J. W. Munger, J. Schnell
Publikováno v: Biogeosciences, Vol 15, Pp 5395-5413 (2018)
We develop and evaluate a method to estimate O3 deposition and stomatal O3 uptake across networks of eddy covariance flux tower sites where O3 concentrations and O3 fluxes have not been measured. The method combines standard micrometeorological f
Externí odkaz: https://doaj.org/article/692b28186c40423b9571bdef171ca810
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7
Modified steroid hormones-XXXIII
Autor: J. W. Ducker, B. Ellis, A. P. Leftwick, D. Burn, M.T. Davies, D.N. Kirk, P. Feather, Williamson David M, G. Cooley, A. K. Hiscock, V. Petrow
Publikováno v: Tetrahedron. 20:597-609
Reaction between steroidal 3-alkoxy-3,5-dienes and the Vilsmeier reagent leads to high yields of the corresponding 6-formyl derivatives. These intermediates are reduced to 3-alkoxy-6-hydroxymethyl-3,5-dienes which undergo dehydration with acids to 6-
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::94f11081d3e29a9602e9f42b5afab2fb
https://doi.org/10.1016/s0040-4020(01)98622-3
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8
Modified steroid hormones—XXXIV
Autor: B. Ellis, A. P. Leftwick, V. Petrow, J. W. Ducker, M.T. Davies
Publikováno v: Tetrahedron. 20:1927-1932
A route to 21-acetyl-16]ga,17]ga-isopropylidenedioxy-20-ketopregnenes has been developed. Some reactions of these compounds are described.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c6564954a31b1dfa88fcebe8d7ac23d7
https://doi.org/10.1016/s0040-4020(01)98460-1
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