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Journal Highlight: Fabrication and testing of a newly designed slit system for depth-resolved X-ray diffraction measurements

Date: Dec 5, 2016

Author: spectroscopyNOW

A new system of slits called spiderweb slits has been developed for depth-resolved powder or polycrystalline X-ray diffraction measurements.

Read More thumbnail image: Journal Highlight Fabrication and testing of a newly designed slit system for depth-resolved X-ray diffraction measurements

Double salt: Negative platinum X-rayed

Date: Dec 1, 2016

Author: David Bradley

The first intermetallic double salt containing the noble metal, platinum, has been synthesised by researchers at the US Department of Energy's Ames Laboratory in Ames, Iowa. The team used X-ray studies to verify their method.

Read More thumbnail image: Double salt Negative platinum X-rayed

X-Radiation damage: Testing the pulse

Date: Nov 15, 2016

Author: David Bradley

X-rays can damage crystals and so precise structure determinations of fragile proteins is often stymied by the very technique one hopes to use. Serial femtosecond crystallography can circumvent this problem where a rapid fire snapshot is obtained before the protein is obliterated. A study of the effects of using this technique in a study of photosystem II helps map the damage as it occurs.

Read More thumbnail image: X-Radiation damage Testing the pulse

Journal Highlight: Application of high-energy polarized energy-dispersive x-ray fluorescence spectrometry to the determination of trace levels of As, Hg, and Pb in certifiable color additives

Date: Nov 7, 2016

Author: spectroscopyNOW

High-energy polarized energy-dispersive XRF spectrometry has been compared with wavelength-dispersive x-ray fluorescence spectrometry and ICPMS for the analysis of trace As, Hg, and Pb in certifiable color additives.

Read More thumbnail image: Journal Highlight Application of high-energy polarized energy-dispersive x-ray fluorescence spectrometry to the determination of trace levels of As Hg and Pb in certifiable color additives

Pollock's paints: Modern art X-rayed

Date: Nov 1, 2016

Author: David Bradley

A non-invasive study using macro X-ray fluorescence mapping (MA-XRF) and multivariate curve resolution-alternating least squares (MCR-ALS) analysis has been used to work out what paints Jackson Pollock used to create his work Number 1A from 1948, the analysis also suggests in what order the drips may have been applied.

Read More thumbnail image: Pollocks paints Modern art X-rayed

Microbatteries: X-rayed tubes

Date: Oct 15, 2016

Author: David Bradley

X-ray nanotomography and other techniques are assisting with the 3D design of a new type of solid electrolyte, micro-battery for portable devices at the millimetre scale.

Read More thumbnail image: Microbatteries X-rayed tubes

Journal Highlight: ToF-SIMS investigation of ancient ceramics from the Quartaia Site, Tuscany

Date: Oct 14, 2016

Author: spectroscopyNOW

Ancient fragments, belonging to the archeological site of Quartaia (Tuscany), were examined to obtain chemical and spatial information on inorganic and organic components. The results revealed the presence of the major elements (Al, Mg, Na, K, Ca, Si, Fe); minor elements (Cr, Cu, Mn, Pb); and organic components adsorbed during the firing process, both in depurata and non-depurata ceramics.

Read More thumbnail image: Journal Highlight ToF-SIMS investigation of ancient ceramics from the Quartaia Site Tuscany

Journal Highlight: Body fat measurement in adolescent girls with type 1 diabetes: a comparison of skinfold equations against dual-energy X-ray absorptiometry

Date: Oct 10, 2016

Author: spectroscopyNOW

The measurement of body fat on adolescent girls with type 1 diabetes by dual-energy X-ray absorptiometry suggests that the common method based on skinfold measurements is inaccurate.

Read More thumbnail image: Journal Highlight Body fat measurement in adolescent girls with type 1 diabetes a comparison of skinfold equations against dual-energy X-ray absorptiometry

Crystals redux: X-ray buckyball revelation

Date: Oct 1, 2016

Author: David Bradley

The century-old received wisdom concerning crystallography may have been turned over by an international twenty strong team of scientists who have found a way to make a new type of crystal using a high-intensity light source. Brian Abbey of La Trobe University, in Melbourne, Australia and colleague Harry Quiney of the University of Melbourne report details in the journal Science Advances.

Read More thumbnail image: Crystals redux X-ray buckyball revelation

Check its pulse: X-rays reveal slowest magnetar

Date: Sep 15, 2016

Author: David Bradley

NASA's Chandra X-ray Observatory and Nuclear Spectroscopic Telescope Array, or NuSTAR, have observed the slowest magnetar, a spinning neutron star rotating at least one thousand times slower than other known pulsars.

Read More thumbnail image: Check its pulse X-rays reveal slowest magnetar
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