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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

Journal Highlight: X‐ray computed tomography and its potential in ecological research: A review of studies and optimization of specimen preparation

Date: Aug 6, 2018

Author: spectroscopyNOW

An overview is presented of recent developments of X‐ray computed tomography as an affordable, simple method of high spatial resolution to study 3D anatomy both in vivo and ex vivo.

Read More thumbnail image: Journal Highlight Xray computed tomography and its potential in ecological research A review of studies and optimization of specimen preparation

New doped laser material: X-ray and electron probe

Date: Aug 1, 2018

Author: David Bradley

X-ray diffraction and electron microscopy have been used to characterise crystals of alumina doped with neodymium ions. The material is a new laser material developed by researchers at the University of California San Diego, USA, that is can emit ultra-short, high-power pulses.

Read More thumbnail image: New doped laser material X-ray and electron probe

Melting in the heat: Atomic movie

Date: Jul 15, 2018

Author: David Bradley

US researchers have used a high energy source to carry out an investigation of the heterogeneous to homogeneous melting transition. The visualization based on ultrafast electron diffraction improves our understanding of how metals melt and could be used to guide the design of extreme engineering systems such as fusion power reactors, steel processing plants, and spacecraft.

Read More thumbnail image: Melting in the heat Atomic movie

Journal Highlight: Utilization of X‐ray computed tomography for the exclusion of a specific caliber and bullet type in a living shooting victim

Date: Jul 9, 2018

Author: spectroscopyNOW

CT scans were carried out on a bystander claimed to have been shot by a police officer to match qualitative and quantitative aspects of the unremoved bullet with police issued 9 mm Luger ammunition.

Read More thumbnail image: Journal Highlight Utilization of Xray computed tomography for the exclusion of a specific caliber and bullet type in a living shooting victim

19th Century photography: X-ray restoration art

Date: Jul 1, 2018

Author: David Bradley

Early photography based on the daguerreotype method used silver plates. Unfortunately some of the oldest known photographic artefacts have faded with the years. Now a team in Canada has demonstrated that they can use a synchrotron light source to carry out rapid-scanning micro-X-ray fluorescence imaging of daguerreotypes and reveal the latent, long-since faded image.

Read More thumbnail image: 19th Century photography X-ray restoration art

Eye, eye: Sea Urchin feet X-rayed

Date: Jun 15, 2018

Author: David Bradley

Sea urchins are not renowned for the visual acuity, indeed they don't have eyes, as such, but they can perceive light. A new study from Lund University using X-ray tomography and electron microscopy shows that they can see with their feet.

Read More thumbnail image: Eye eye Sea Urchin feet X-rayed
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