Zobrazeno 1 - 10
of 132
pro vyhledávání: '"D. Wynn-Williams"'
Publikováno v:
Icarus. 174:560-571
With proposals that micro-miniaturised Raman spectrometers could soon be part of a suite of analytical instrumentation on the surface of Mars, it is critically important to examine the spectral information that could be forthcoming from attempts to d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f24f2d646349d1870706c83d68112f3f
https://doi.org/10.1016/j.icarus.2004.07.029
https://doi.org/10.1016/j.icarus.2004.07.029
Publikováno v:
Journal of Raman Spectroscopy. 35:463-469
FT-Raman spectra were obtained for two Antarctic extremophiles, the epilithic lichens Xanthoria elegans and Caloplaca sublobulata from the maritime ecological long-term research site on Leonie Island. Twelve specimens from cloches designed for the fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62725aae1570cf40c703b442dbaa6511
https://doi.org/10.1002/jrs.1172
https://doi.org/10.1002/jrs.1172
Publikováno v:
Journal of Raman Spectroscopy. 35:470-474
Detailed FT-Raman spectra of Antarctic cryptoendolithic colonies in Beacon sandstone have revealed some novel information about the biogeological modification process involving iron(III) mobilization by the organism. The previously unreported but cha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::772d9796b019632d0b85e26830827107
https://doi.org/10.1002/jrs.1171
https://doi.org/10.1002/jrs.1171
Autor:
Alex Ellery, Howell G. M. Edwards, David L. Dickensheets, John Parnell, David D. Wynn-Williams
Publikováno v:
Journal of Raman Spectroscopy. 35:441-457
We describe how the exploration of the Martian environment would be considerably enhanced through the use of Raman spectroscopy. Furthermore, Raman spectroscopy is particularly suited for both mineralogical analysis of Martian rock and soil and for t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46cceadf092ef4083be7ed32ec235607
https://doi.org/10.1002/jrs.1189
https://doi.org/10.1002/jrs.1189
Autor:
Luiz Fernando C. de Oliveira, David D. Wynn-Williams, Charles S. Cockell, Howell G. M. Edwards, J. Cynan Ellis-Evans
Publikováno v:
International Journal of Astrobiology. 3:125-129
The FT-Raman spectra are described of green and red snow algae, Chlamydomona, involved in the colonization of exposed surfaces of the McLeod Glacier, Jane Col, Signy Island, situated at the northern edge of the Weddell Sea, Antarctica. The protective
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::221eb181701150411fbb0e47e56d29df
https://doi.org/10.1017/s1473550404002034
https://doi.org/10.1017/s1473550404002034
Publikováno v:
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 59:2277-2290
The vital UV-protective and photosynthetic pigments of cyanobacteria and lichens (microbial symbioses) that dominate primary production in Antarctic desert ecosystems auto-fluoresce at short-wavelengths. A long wavelength (1064 nm) near infra-red las
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3885762b420aebd564b04a410ddfe07c
https://doi.org/10.1016/s1386-1425(03)00071-4
https://doi.org/10.1016/s1386-1425(03)00071-4
Publikováno v:
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 59:2301-2309
Lichens in Antarctic habitats are subjected to environmental extremes, including UVB radiation, desiccation and low temperatures, as well as to rapid fluctuations in these. Lichens synthesise a variety of chemical compounds in response to their envir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09e55abdb67686ed9cb8a14343263b0a
https://doi.org/10.1016/s1386-1425(03)00073-8
https://doi.org/10.1016/s1386-1425(03)00073-8
Publikováno v:
Journal of Molecular Structure. :27-37
The FT-Raman and infrared vibrational spectra of some important lichen compounds from two metabolic pathways are characterised. Key biomolecular marker bands have been suggested for the spectroscopic identification of atranorin, gyrophoric acid, fuma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0dbc2ba7e67fd6b0f8502a4c72dac281
https://doi.org/10.1016/s0022-2860(02)00626-9
https://doi.org/10.1016/s0022-2860(02)00626-9
Seasonal periodicity of physical factors, inorganic nutrients and microalgae in Antarctic fellfields
Publikováno v:
Polar Biology. 26:396-403
Over 15 months between January 1990 and March 1991, a range of physical, chemical and biological parameters was monitored regularly in fellfield soils of frost-sorted polygons at four sites on Signy Island (South Orkney Islands, maritime Antarctica).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ff911a28a56d07e2c592e70b4a5030c
https://doi.org/10.1007/s00300-003-0503-2
https://doi.org/10.1007/s00300-003-0503-2
Publikováno v:
Journal of Molecular Structure. 648:49-59
The Raman and infrared spectra of the UV-radiation protectant parietin extracted from Xanthoria lichen species are reported and vibrational assignments made of key features which are important for the characterisation of parietin in situ in stresstol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::354ce1df88f206d33c504a51ad104efc
https://doi.org/10.1016/s0022-2860(02)00384-8
https://doi.org/10.1016/s0022-2860(02)00384-8