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rssJournal Highlight: Ion implanted inconel alloy – SIMS and GDMS depth profile analysis
Date: Feb 4, 2013
Author: spectroscopyNOW
SIMS and GDMS have been applied to the depth profile analysis of ion-implanted nickel alloy inconel 600, giving similar results for implanted N, Ti and Y.
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Journal Highlight: Imaging of internal stress around a mineral inclusion in a sapphire crystal: application of micro-Raman and photoluminescence spectroscopy
Date: Feb 4, 2013
Author: spectroscopyNOW
A micro-Raman and photoluminescence imaging technique was developed for visualizing the internal stress fields in a sapphire crystal and applied to an Australian sapphire gemstone with a zircon inclusion.
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Journal Highlight: Could infrared spectroscopy identify melamine-related stone using melamine-contained mixture as a reference?
Date: Feb 4, 2013
Author: spectroscopyNOW
The infrared spectra of dry melamine-containing mixtures are different from those of melamine-containing stones formed in urine, so cannot be used for reference purposes.
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Tipping point: Wooden toothpicks for ambient ionisation of illegal drugs
Date: Feb 1, 2013
Author: Steve Down
Ketamine and its major metabolite norketamine have been measured in urine and oral fluid by ambient electrospray mass spectrometry using a wooden toothpick as the sample holder.
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No slipping up: Banana proteome unpeeled using peptide libraries
Date: Feb 1, 2013
Author: Steve Down
An in-depth proteome study of banana fruit using combinatorial peptide ligand libraries to isolate the proteins from the sugar-rich pulp has identified more than 1100 proteins.
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Viral detection: SERS sensitivity
Date: Feb 1, 2013
Author: David Bradley
The surface envelope and antigens from the zoonotic pathogens West Nile virus (WNV) and Rift Valley fever virus (RVFV) can now be detected with high sensitivity thanks to the development of an immunoassay based on surface-enhanced Raman scattering (SERS) spectroscopy.
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Orange juice: NMR health test
Date: Feb 1, 2013
Author: David Bradley
The amino acid composition of juice from oranges grown on trees infected with HLB, Huanglongbing, a pathogen that causes citrus greening disease, can now be distinguished from that produced from healthy trees using a new application of NMR spectroscopy.
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Tanned: Ion channel clues to UV protection
Date: Feb 1, 2013
Author: David Bradley
Skin cells known as melanocytes can sense ultraviolet light and increase production of melanin - tanning - in the skin to protect themselves and the tissues below. New research reveals that a well-studied and chemically sensitive ion channel found in cells elsewhere in the body plays a central role in "detecting" incident ultraviolet.
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Hydrogen from silicon: Just add water
Date: Feb 1, 2013
Author: David Bradley
Two techniques, X-ray photoelectron spectroscopy (XPS) and time-of-flight-secondary-ion-mass-spectrometry (TOF-SIMS), have been used in parallel to show how adding water to silicon can generate hydrogen. The work might take us another step closer to the so-called carbon-free hydrogen economy.
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Martian metabolism: The rise and fall of salt
Date: Feb 1, 2013
Author: David Bradley
An MRI study of members of the Russian "Mars500" mission by Jens Titze and colleagues has looked at how the volunteers' sodium levels change in cycles lasting a week or even a month. The study published in the journal Cell Metabolism, suggests that the conventional wisdom regarding excretion of sodium keeping levels constant in the body ought to be revised.
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