Zobrazeno 1 - 10
of 27
pro vyhledávání: '"G.G McFadyen"'
Autor:
G.G McFadyen, J.N Cape
Publikováno v:
Atmospheric Research. 50:359-371
During spring the atmospheric concentration of Peroxyacetyl Nitrate, PAN, in the UK varies over three orders of magnitude due to long range transport and local photochemical production. An experiment at Great Dun Fell was used to determine which of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5de11218e974d8380d8d13a8c1ed6a4
https://doi.org/10.1016/s0169-8095(98)00102-1
https://doi.org/10.1016/s0169-8095(98)00102-1
Autor:
S.H Mesfin, G.G McFadyen, Axel Berner, David S. Lee, Keith Bower, Erik Swietlicki, C. Milford, Olle H. Berg, Brett Yuskiewicz, Mark A. Sutton, Jingchuan Zhou, B. Divjak, Z. Galambos, Göran Frank, Ulrike Dusek, Roy N. Colvile, S.A. Pepler, D. W. F. Inglis, K. M. Beswick, M. Bizjak, C.J. Dore, Manfred Wendisch, Martin Gallagher, John N. Cape, Wolfram Birmili, S. I. Cederfelt, F. Stratmann, Bengt G. Martinsson, A. Wiedensohler, Thomas Choularton, Carl Bradbury, Peter Ctyroky
Publikováno v:
Atmospheric Research. 50:151-184
During March and April of 1995 a major international field project was conducted at the UMIST field station site on Great Dun Fell in Cumbria, Northern England. The hill cap cloud which frequently envelopes this site was used as a natural flow throug
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7327e44dce43d0cb0d4ffd3eb1651ee0
https://doi.org/10.1016/s0169-8095(98)00103-3
https://doi.org/10.1016/s0169-8095(98)00103-3
Autor:
Thomas Choularton, G.G McFadyen, Ulrike Dusek, Carl Bradbury, A. Wiedensohler, Axel Berner, C.J. Dore, Erik Swietlicki, Wolfram Birmili, Brett Yuskiewicz, Keith Bower
Publikováno v:
Atmospheric Research. 50:185-204
Data collected at the Great Dun Fell site are used to provide input and comparative output for a computer model of the hill cap cloud system. The aim of the report is to investigate the effect of in-cloud chemical processing on aerosols and trace gas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5efce4566f7db9753875eb3290fbcae3
https://doi.org/10.1016/s0169-8095(98)00104-5
https://doi.org/10.1016/s0169-8095(98)00104-5
Autor:
Axel Berner, Martin Gallagher, David S. Lee, Keith Bower, Thomas Choularton, R.L. Storeton-West, C.J. Dore, John N. Cape, G.G McFadyen
Publikováno v:
Atmospheric Research. 50:345-358
A novel technique for measuring dissolved sulphur dioxide/bisulphite/sulphite (SIV) continuously in cloud water has been used in a study of the oxidation of SIV in a hill cap cloud. In March/April 1995 measurements were made at Great Dun Fell, Cumbri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::753aab6a2230f8b691fab8521df03827
https://doi.org/10.1016/s0169-8095(98)00101-x
https://doi.org/10.1016/s0169-8095(98)00101-x
Publikováno v:
Chemical Physics Letters. 293:343-351
The charge separation and recombination rate constants for electron transfer between the first excited singlet state of methylene blue and either aniline or N,N-dimethylaniline have been measured over a range of temperature so that the solvent's long
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a99a68ca1381bc4b854b68399546dc38
https://doi.org/10.1016/s0009-2614(98)00793-3
https://doi.org/10.1016/s0009-2614(98)00793-3
Publikováno v:
Chemical Physics. 172:363-376
The femtosecond non-linear optical response of polyacetylene and a norbornylene—polyacetylene copolymer, synthesized by the “Durham” route, has been measured using a variety of resonant four-wave mixing and transient absorption experiments. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c031f60fbbf6675e490240edf43c36ca
https://doi.org/10.1016/0301-0104(93)80130-2
https://doi.org/10.1016/0301-0104(93)80130-2
Publikováno v:
Chemical Physics Letters. 198:641-644
A new method for measuring picosecond transient absorption kinetics is proposed and demonstrated. Generation and transformation of a laser pulse, such that its wavelength changes linearly with time, allows the determination of the time delay after ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9559090e358aa6d6865cac56a912a982
https://doi.org/10.1016/0009-2614(92)85042-9
https://doi.org/10.1016/0009-2614(92)85042-9
Autor:
J.N. Cape, G.G. McFadyen
Publikováno v:
The Science of the total environment. 337(1-3)
Peroxyacetyl nitrate (PAN) concentrations in air were sampled hourly from 1994 to 1998 at a rural site 15 km south-west of Edinburgh, in eastern Scotland. Annual average concentrations were between 0.1 and 0.15 nl l(-1), with episodes up to 3 nl l(-1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::161ce7e4090f3ff0afeae5b356891e1f
https://pubmed.ncbi.nlm.nih.gov/15626392
https://pubmed.ncbi.nlm.nih.gov/15626392
Publikováno v:
Journal of Luminescence. :703-705
We present complementary results for non-linear decays of femtosecond induced absorption and time correlated single photon counting fluorescence that demonstrate that the principal excited state decay route of Durham polyacetylene is electron-hole re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d862ec262eb762741eba29efbdabed27
https://doi.org/10.1016/0022-2313(94)90255-0
https://doi.org/10.1016/0022-2313(94)90255-0
Autor:
M. Bell, L. M. Connors, Godfrey S. Beddard, G. M. Proudley, G.G. McFadyen, Trevor J. Hall, P. D. Foote, G.D. Reid, Keith Powell
Publikováno v:
Applied Optics. 32:174
An image-processing system based on four-wave mixing in a film of polyacetylene less than 100 nm thick is demonstrated with a 1-ps processing cycle time. Image phase conjugation and cross correlation are performed with a resolution space-bandwidth pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e539caedef34b8a55c3f3cdf06a1220
https://doi.org/10.1364/ao.32.000174
https://doi.org/10.1364/ao.32.000174