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rssJournal Highlight: Gilding and pigments of Renaissance marble of Abatellis Palace: non-invasive investigation by XRF spectrometry
Date: Mar 11, 2013
Author: spectroscopyNOW
The chemical composition of pictorial layers and their stratigraphical distribution on renaissance marble sculptures from Abatellis Palace, Palermo, have been characterised by UV-vis fluorescence and XRF measurements.
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Journal Highlight: Quantification of active ingredients in suppositories by FT-Raman spectroscopy
Date: Mar 4, 2013
Author: spectroscopyNOW
An efficient method for the quantitative determination of acetaminophen and diclofenac sodium in commercial suppositories based on partial least squares treatment of FT-Raman spectra is described.
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Journal Highlight: Infrared imaging as a cancer diagnostic tool: Introducing a new concept of spectral barcodes for identifying molecular changes in colon tumors
Date: Mar 4, 2013
Author: spectroscopyNOW
A biophotonic approach based on IR spectral micro-imaging combined with multivariate statistical analysis has been implemented on colon tissues to develop a new concept of spectral bar coding.
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Journal Highlight: Coupling of a high-resolution monoamine oxidase-A inhibitor assay and HPLC–SPE–NMR for advanced bioactivity profiling of plant extracts
Date: Mar 4, 2013
Author: spectroscopyNOW
A photometric microplate-based high-resolution monoamine oxidase A inhibitor assay was coupled with an HPLC–SPE–tube transfer NMR system for the bioactivity profiling of plant extracts in the search for new antidepressants.
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Journal Highlight: Modification and characterization of polyacrylonitrile fiber by chelating ligand for preconcentration and determination of neodymium ion in biological and environmental samples
Date: Mar 4, 2013
Author: spectroscopyNOW
Chelating fibers of polyacrylonitrile prepared from iminodiacetic acid have been used for the preconcentration and determination of trace Nd(III) ions from human biological fluid and environmental waters by ICP-AES.
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Two are better than one: Dual electrosprays for desorbed samples in ambient mass spectrometry
Date: Mar 1, 2013
Author: Steve Down
A laser desorption ambient mass spectrometry system with two post-desorption sprayers gives the flexibility to carry out different procedures on the same sample during the same experiment, rapidly switching spectra.
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A message for you: Mercury's turbulent past
Date: Mar 1, 2013
Author: David Bradley
X-ray spectroscopy and astronomical analyses reveal that Mercury - the planet closest to the Sun - may have had a vast, roiling ocean of liquid rock, or magma, during its very early history some 4.5 billion years ago.
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Indicator: Beat the Alzheimer's blues
Date: Mar 1, 2013
Author: David Bradley
Methylene blue is well known as a redox indicator in chemical laboratories, but it may also have a role to play in warding off the symptoms of Alzheimer's disease, according to a new study, or perhaps lead to novel drugs for the disorder based on its chemical structure and properties. Mechanistic details of the compound's putative mode of action are revealed in the journal Angewandte Chemie by researchers using nuclear magnetic resonance (NMR) and spectroscopy and other approaches.
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Evolutionary revelations: Positively not rhesus
Date: Mar 1, 2013
Author: David Bradley
Functional magnetic resonance imaging (fMRI) studies have demonstrated that humans have at least two functional networks in the brain's cerebral cortex that are not present in our relatively close relative, the rhesus monkey. The findings suggest that this characteristic of the human brain emerged some time during the evolutionary process between our primate ancestor and modern humans was probably not present in an ancestor common to rhesus monkeys and humans.
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Isotopic analysis: Solar system revelations
Date: Mar 1, 2013
Author: David Bradley
Researchers have used UV beamline studies and other techniques to analyse the origins of different isotope ratios among the chemical elements that make up the planets, moons, comets and asteroids, as well as the interplanetary ice and dust in our solar system. Their studies could provide new insights as to how the solar system evolved and what might be its ultimate fate.
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