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Unwinding bacterial enzymes: X-ray revelations

Date: Nov 15, 2019

Author: David Bradley

X-ray crystallography undertaken at the Canadian Light Source in Saskatchewan, and the Advanced Photon Source in Illinois, USA, have given scientists an ultra-high resolution three-dimensional structure of non-ribosomal peptide synthetases, NRPS enzymes, The work could lead to new therapeutic approaches to treating bacterial infection.

Read More thumbnail image: Unwinding bacterial enzymes X-ray revelations

Journal Highlight: Graphene metamaterials for intense, tunable and compact extreme ultraviolet and X‐ray sources

Date: Nov 5, 2019

Author: spectroscopyNOW

A unique free‐electron light source has been developed using multilayer graphene metamaterials to support plasmonic modes that interact with an electron beam, paving the way to high‐yield compact tunable sources of extreme UV to X‐ray light.

Read More thumbnail image: Journal Highlight Graphene metamaterials for intense tunable and compact extreme ultraviolet and Xray sources

Journal Highlight: Investigating temperature‐induced structural changes of lead halide perovskites by in situ X‐ray powder diffraction

Date: Oct 17, 2019

Author: spectroscopyNOW

Classical and multivariate data processing approaches have been applied to the in situ X‐ray diffraction pair distribution function setup on two samples of the hybrid perovskite methylammonium lead iodide obtained by different synthetic routes to study the effects of temperature variations.

Read More thumbnail image: Journal Highlight Investigating temperatureinduced structural changes of lead halide perovskites by in situ Xray powder diffraction

A new twist on staying cool: X-rays unravel the mechanism

Date: Oct 15, 2019

Author: David Bradley

An X-ray crystallographic study reveals how twisting fibres gives rise to a novel cooling effect that might be used in low-energy refrigeration systems.

Read More thumbnail image: A new twist on staying cool X-rays unravel the mechanism

Journal Highlight: X‐ray imaging of high temperature furnace applied to glass melting

Date: Oct 8, 2019

Author: spectroscopyNOW

The dynamics of soda‐lime‐silica glass grain melting have been investigated experimentally using a nonintrusive X-ray imaging technique based on bubble size distributions.

Read More thumbnail image: Journal Highlight Xray imaging of high temperature furnace applied to glass melting

Enzyme microscopy: X-rays usurped

Date: Sep 15, 2019

Author: David Bradley

Cryo-electron microscopy, as opposed to X-ray crystallography, has allowed researchers in Germany to obtain a structure for a key enzyme complex involved in DNA repair and to trace the conformational changes that take place while it does its job.

Read More thumbnail image: Enzyme microscopy X-rays usurped

Journal Highlight: Microsecond time‐resolved X‐ray diffraction for the investigation of fatigue behavior during ultrasonic fatigue loading

Date: Sep 9, 2019

Author: spectroscopyNOW

A new method based on time-resolved X-ray diffraction is proposed in order to measure the elastic strain and stress during ultrasonic fatigue loading experiments.

Read More thumbnail image: Journal Highlight Microsecond timeresolved Xray diffraction for the investigation of fatigue behavior during ultrasonic fatigue loading

Prawn to be wild: Chitosan nanocatalyst support

Date: Aug 15, 2019

Author: David Bradley

Energy dispersive X-ray spectroscopy (SEM/EDS) and various other techniques have been used in a new study that could see chitosan, the material from waste shrimp shells, be used as a substrate for a palladium nanoparticle catalyst in an ionic liquid for efficient and "green" hydrogenation reactions.

Read More thumbnail image: Prawn to be wild Chitosan nanocatalyst support

Journal Highlight: High‐precision X‐ray spectroscopy of Fe ions in an EBIT using a micro‐calorimeter detector: First results

Date: Aug 5, 2019

Author: spectroscopyNOW

A micro‐calorimeter X‐ray detector of the maXs‐30 type has been used to record the X‐ray radiation from Fe ions produced in the S‐EBIT‐I electron beam ion trap, moving one step closer to the use of maXs‐type detectors as standard instrumentation at GSI/FAIR.

Read More thumbnail image: Journal Highlight Highprecision Xray spectroscopy of Fe ions in an EBIT using a microcalorimeter detector First results

Bacterial protection racket: X-rays reveal mechanism

Date: Jul 15, 2019

Author: David Bradley

X-ray crystallography and nuclear magnetic resonance (NMR) spectroscopy have been used in parallel to investigate the mechanism by which some forms of bacteria can protect themselves against chemical attack. The research could help in the fight against bacterial resistance and so-called superbugs.

Read More thumbnail image: Bacterial protection racket X-rays reveal mechanism
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