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Nitrogen under pressure: Polymorph X-rayed

Date: Nov 15, 2018

Author: David Bradley

An unusually complex form of one of the most abundant chemical elements on Earth has been observed in the laboratory for the first time and its structure determined by X-ray crystallography.

Read More thumbnail image: Nitrogen under pressure Polymorph X-rayed

Journal Highlight: Preparation of naturally active melanin nano‐platforms chelated with barium ions as a potential X‐ray‐computed tomography contrast agent

Date: Nov 5, 2018

Author: spectroscopyNOW

PEGylated melanin nanoparticles have been prepared and reacted with barium ions to prepare a CT imaging contrast agent with X‐ray attenuation slightly higher than the commercially available iodinated contrasting agent Iohexol.

Read More thumbnail image: Journal Highlight Preparation of naturally active melanin nanoplatforms chelated with barium ions as a potential Xraycomputed tomography contrast agent

Feathered friends: X-raying the missing link

Date: Nov 1, 2018

Author: David Bradley

Modern birds evolved from theropod dinosaurs, of which the Tyrannosaurus rex is perhaps the most famous. They descended via creatures such as Archaeopteryx. Now, a new species of that grouping that more closely resembled the modern bird has been examined by UK scientists in a three-dimensional synchrotron X-ray study.

Read More thumbnail image: Feathered friends X-raying the missing link

Copper flow: Liquid metal in a crystal

Date: Oct 15, 2018

Author: David Bradley

 We might be able to build a battery thanks to research that reveals how copper ions can flow like liquid through certain crystalline materials, according to scientists in the USA.

Read More thumbnail image: Copper flow Liquid metal in a crystal

Journal Highlight: A fast X‐ray‐diffraction‐based method for the determination of crystal size distributions (FXD‐CSD)

Date: Oct 8, 2018

Author: spectroscopyNOW

Crystal size distributions of crystalline powders or polycrystalline materials have been determined by a fast X‐ray‐diffraction‐based procedure using intensity scaling from the diffraction intensities of single Bragg spots measured in spotty diffraction patterns.

Read More thumbnail image: Journal Highlight A fast Xraydiffractionbased method for the determination of crystal size distributions FXDCSD

Superatom: X-rays test its metal

Date: Oct 1, 2018

Author: David Bradley

 A metal cluster comprising 55 copper and aluminium atoms appears to be a crystal superficially, but chemically speaking it has the properties of an atom, a superatom. The heterometallic entity was synthesized by a team at the Technical University of Munich (TUM), Germany, and the work could pave the way to new, more cost-effective catalysts.

Read More thumbnail image: Superatom X-rays test its metal

X-rays closing in: Single amyloid structures

Date: Sep 15, 2018

Author: David Bradley

X-ray scattering from amyloid fibrils could offer new clues as to the role these aberrant protein fragments play in Alzheimer's and Parkinson's diseases, according to an international team. The team used graphene to overcome interference from other substances that contaminated their small samples of amyloid taking them another step towards the possibility of single-molecule X-ray laser analysis.

Read More thumbnail image: X-rays closing in Single amyloid structures

Journal Highlight: Estimation of visceral fat in 9 to 13‐year‐old girls using dual‐energy x‐ray absorptiometry (DXA) and anthropometry

Date: Sep 10, 2018

Author: spectroscopyNOW

Dual x-ray absorptiometry with and without anthropometry were used to estimate visceral fat in young girls, the combination proving to give more accurate results.

Read More thumbnail image: Journal Highlight Estimation of visceral fat in 9 to 13yearold girls using dualenergy xray absorptiometry DXA and anthropometry

Brains over brood: Fossil explained with X-ray tomography

Date: Sep 1, 2018

Author: David Bradley

X-ray tomography has been used to study a newly described fossil of an extinct ancestor of modern mammals that was found with 38 fossilised offspring. The study provides new evidence that as the first mammals evolved they traded brood size for brain size.

Read More thumbnail image: Brains over brood Fossil explained with X-ray tomography

Boning up on evolution: X-raying fishy ancestors

Date: Aug 15, 2018

Author: David Bradley

An X-ray study has allowed European scientists to get an insider view of the fossilised skeletons of some our oldest vertebrate ancestors. Their findings might solve a 160-year-old mystery about how skeletons evolved in the first place.

Read More thumbnail image: Boning up on evolution X-raying fishy ancestors
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