UV/Vis Spectroscopy / Ezine
Recycling hydrogen: A galactic enterprise
Date: Dec 1, 2011
Author: David Bradley
Galaxies recycle immense volumes of hydrogen gas and heavy elements. In so doing they help to build successive generations of stars in processes that stretch out across billions of years, according to data obtained using the ultraviolet-sensitive Cosmic Origins Spectrograph.
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Journal Highlight: In vivo measurement of bladder wall oxygen saturation using optical spectroscopy
Date: Nov 7, 2011
Author:
The first in vivo measurements of oxygen saturation in the walls of human bladders with normal function have been reported as proof of principle for using this marker to explore bladder dysfunction.
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Autumn leaves: Different this year thanks to spectroscopy
Date: Nov 1, 2011
Author: David Bradley
Ultraviolet spectroscopy, as well as NMR and mass spectrometry, have been used by an Austrian team to reveal the existence of a previously unknown chlorophyll decomposition product in the autumn leaves of Norway maples. The novel structure suggests an entirely different degradation route not seen in other deciduous trees is present. The work suggests that the route is more akin to the formation of bile pigment from broken down haemoglobin.
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Journal Highlight: Template-assisted fabrication and characterization of photoluminescent polymer nanopillars
Date: Oct 10, 2011
Author:
A process has been described for the fabrication of photoluminescent nanopillars by replication from nanoporous anodic alumina via template wetting using polymer from different chemical families.
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Fungal production: Nanobiocomposite for pollution control
Date: Oct 1, 2011
Author: David Bradley
A whole raft of techniques, including UV-Vis spectroscopy has been used to characterise systematically biological composites containing silver-nanocrystals produced by the fungus Cylindrocladium floridanum in a novel, environmentally benign biological process. The biocomposite can rapidly degrade the widespread toxic pollutant nitrophenol.
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Journal Highlight: Dual-color fluorescence lifetime correlation spectroscopy to quantify protein-protein interactions in live cell
Date: Sep 6, 2011
Author:
Problems with crosstalk in dual-color fluorescence correlation spectroscopy studies of protein interactions in living cells have been overcome with an approach based on fluorescence lifetime correlation spectroscopy.
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Adenine pathways: UV protection racket
Date: Sep 1, 2011
Author: David Bradley
A collaboration between teams in Germany and the US has shown that one of the building blocks of the nucleic acids DNA and RNA, adenine, has a previously unrecognised variable range of ionization energies along its reaction pathways. The finding could improve our understanding of experimental data regarding how adenine survives exposure to ultraviolet light, showing that the processes might be more complicated than previously thought. However, it also has potentially far-reaching implications for...
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Journal Highlight: Automated classification of multicolored rolling circle products in dual-channel wide-field fluorescence microscopy
Date: Aug 8, 2011
Author:
Image analysis methods are presented for the detection and classification of single molecules and single-molecule interactions detected using padlock probes or proximity ligation.
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Sunburn solution: UV damage pivots on single electron
Date: Aug 1, 2011
Author: David Bradley
Researchers who have been working for nearly a decade to piece together the process by which an enzyme repairs UV-damaged DNA have finally witnessed the entire process in full detail in the laboratory and it seems just one electron underpins the whole process pointing to a potential treatment for sunburn.
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Journal Highlight: Synchronous fluorescence spectroscopy as a novel tool to enable PAT applications in bioprocesses
Date: Jul 11, 2011
Author:
Synchronous fluorescence spectroscopy was evaluated as a new tool for real-time bioprocess monitoring of animal cell cultures using bioreactor cultures of three monoclonal antibody-producing CHO cell lines. The technique provides data on various fluorescent compounds in a single spectrum, showing improved peak resolution and recording speed.
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