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X-ray toys: Toxic contaminants

Date: Feb 1, 2018

Author: David Bradley

X-ray fluorescence (XRF) spectrometry has been used by British scientists to analyse the presence of elements within individual plastic toys. The study reveals worrying levels of bromine, cadmium, lead, and other chronically toxic elements that might leach from broken toys chewed or inadvertently swallowed by a child.

Read More thumbnail image: X-ray toys Toxic contaminants

Monoclonal against Marburg: X-rays track antiviral effect

Date: Jan 15, 2018

Author: David Bradley

X-ray studies have revealed how a human monoclonal antibody known as MR191, neutralizes the Marburg virus by mimicking the host receptor and plugging into a spot on the viral surface through a receptor binding site.

Read More thumbnail image: Monoclonal against Marburg X-rays track antiviral effect

Journal Highlight: High concentration measurements of U and Pu with nondestructive and standardless K-edge densitometer device

Date: Jan 8, 2018

Author: spectroscopyNOW

A K-edge densitometer has been used to measure high concentrations of U and Pu in samples, comparing two processing methods without calibration (except energy calibration).

Read More thumbnail image: Journal Highlight High concentration measurements of U and Pu with nondestructive and standardless K-edge densitometer device

Watery weirdness: X-rays reveal

Date: Jan 4, 2018

Author: David Bradley

A femtosecond X-ray laser has been used by scientists at Stockholm University, Sweden, to probe the so-called "no man's land" in the thermodynamic landscape of water to explain some of its anomalous behaviour. The study points to water existing as two distinct liquids at a certain critical state, the team reports in the journal Science.

Read More thumbnail image: Watery weirdness X-rays reveal

Methane mystery: Marine microbes X-rayed

Date: Dec 15, 2017

Author: David Bradley

Industry and agriculture generate vast quantities of methane, a potent greenhouse gas. However, marine microbes also represent an important source although exactly how is entangled in the "ocean methane paradox." Now, US researchers have used X-ray crystallography to explain it.

Read More thumbnail image: Methane mystery Marine microbes X-rayed

Journal Highlight: Scanning X-ray diffraction on cardiac tissue: automatized data analysis and processing

Date: Dec 4, 2017

Author: spectroscopyNOW

A scanning X-ray diffraction study of cardiac tissue has been performed covering the entire cross section of a mouse heart slice using a technique that could be easily extended to characterize tissue from a diseased heart.

Read More thumbnail image: Journal Highlight Scanning X-ray diffraction on cardiac tissue automatized data analysis and processing

Antibiotic binding: X-rays show us the sites

Date: Dec 1, 2017

Author: David Bradley

Researchers at the Université de Montréal, Canada, are using X-ray crystallography to find the exact binding site for small molecules that can attach and thus inhibit the bacterial protein, TraE, which is an essential component of the plasmid transfer machinery of bacterial resistance gene sharing.

Read More thumbnail image: Antibiotic binding X-rays show us the sites

What a pen and ink: X-rayed papyrus

Date: Nov 15, 2017

Author: David Bradley

X-ray microscopic analyses of 2,000-year-old papyri fragments by scientists at the University of Copenhagen, Denmark, has shown that the black ink used by Egyptian scribes was not comprised of purely carbon-based organic materials as previously thought but contains the metallic element copper not previously identified in such inks.

Read More thumbnail image: What a pen and ink X-rayed papyrus

Journal Highlight: In vivo X-ray imaging of transport of renal clearable gold nanoparticles in the kidneys

Date: Nov 6, 2017

Author: spectroscopyNOW

Noninvasive X-ray imaging of renal clearable gold nanoparticles in normal and nephropathic kidneys has advanced understanding of the nano-bio interactions while offering a new pathway to noninvasively image kidney dysfunction and local injuries at the anatomical level.

Read More thumbnail image: Journal Highlight Invivo X-ray imaging of transport of renal clearable gold nanoparticles in the kidneys

X-rayed perovskites: Probably

Date: Nov 1, 2017

Author: David Bradley

Researchers in Japan have used Bayesian statistical analysis to help them work out the structure of a perovskite surface from its X-ray data.

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