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Journal Highlight: In vivo XANES measuring technique for studying the arsenic uptake in cucumber plants

Date: May 8, 2017

Author: spectroscopyNOW

A new XANES method has been developed to determine the As oxidation state in order to identify the possible metabolic processes during the nutrient uptake in cucumber (Cucumis sativus L. cv Joker) as a model plant.

Read More thumbnail image: Journal Highlight In vivo XANES measuring technique for studying the arsenic uptake in cucumber plants

Obscure crystals: Extracting extra from X-ray data

Date: May 1, 2017

Author: David Bradley

A new method allows scientists to extract previously hidden information from X-ray diffraction data on proteins and other biological molecules. The technique allows the difference between a target with and without its substrate to be more precisely refined in drug discovery.

Read More thumbnail image: Obscure crystals Extracting extra from X-ray data

Chemical restoration: X-rays get beneath the paintwork

Date: Apr 15, 2017

Author: David Bradley

The Ghent Altarpiece was a family affair painted around 1432 by Flemish/Early Netherlandish artist Jan van Eyck and according to art historians probably his brother Hubert. Now, chemical imaging based on element-specific X-ray analysis of a large area of the work has revealed the original paint layers and assisted in cleanup and conservation.

Read More thumbnail image: Chemical restoration X-rays get beneath the paintwork

Journal Highlight: Dynamic contact strain measurement by time-resolved stroboscopic energy dispersive synchrotron X-ray diffraction

Date: Apr 10, 2017

Author: spectroscopyNOW

The first dynamic contact strain measurement of a ball bearing using stroboscopic energy dispersive X-ray diffraction has been performed, examining the outer raceway of a test bearing.

Read More thumbnail image: Journal Highlight Dynamic contact strain measurement by time-resolved stroboscopic energy dispersive synchrotron X-ray diffraction

Graphene for X-rays: Benchtop instruments

Date: Apr 1, 2017

Author: David Bradley

A collaboration between the A*STAR Singapore Institute of Manufacturing Technology (SIMTech) and the Massachusetts Institute of Technology (MIT) in the USA is working towards a versatile, directional X-ray source that exploits the properties of the "two-dimensional" carbon material known as graphene and could be built as a bench-top or even handheld device for a wide range of applications.

Read More thumbnail image: Graphene for X-rays Benchtop instruments

Record-breaking crystals: Smallest ever X-rayed

Date: Mar 15, 2017

Author: David Bradley

The crystalline protein envelope of an insect virus has been examined by high-intensity X-ray pulses. The study by Henry Chapman of the Center for Free-Electron Laser Science id described in the Proceedings of the National Academy of Sciences and represents the smallest protein crystals examined so far by X-ray crystallography.

Read More thumbnail image: Record-breaking crystals Smallest ever X-rayed

Journal Highlight: Recent developments in polymer applications of synchrotron small-angle X-ray scattering

Date: Mar 13, 2017

Author: spectroscopyNOW

Recent developments in polymer applications of SAXS and its related techniques such as USAXS, ASAXS, GISAXS and X-ray photon correlation spectroscopy have been reviewed along with new trends in nanoparticle analyses and industrial applications.

Read More thumbnail image: Journal Highlight Recent developments in polymer applications of synchrotron small-angle X-ray scattering

Cellular fusion: Protein X-ray insights

Date: Mar 1, 2017

Author: David Bradley

X-ray crystallography reveals that two closely related proteins, the HAP2 protein from the single-celled alga Chlamydomonas reinhardtii and the fusion protein from dengue virus are essential for fusion with a cell membrane and thus both sexual reproduction and viral invasion of a host cell. The proteins probably emerged very early in the history of life on Earth.

Read More thumbnail image: Cellular fusion Protein X-ray insights

Size is everything: X-ray protein volume

Date: Feb 15, 2017

Author: David Bradley

Researchers in the US appear to have solved a paradox regarding the changing volume of proteins that dates back half a century. The team can now predict accurately through computational work how volume will change for a given protein between its folded and unfolded state. The study might shed light on the inner workings of life under pressure in the ocean depths and could have implications for understanding alien biochemistry should we ever identify life on other planets.

Read More thumbnail image: Size is everything X-ray protein volume

Journal Highlight: X-ray tomography of tsunami deposits: Towards a new depositional model of tsunami deposits

Date: Feb 6, 2017

Author: spectroscopyNOW

X-ray computed microtomography has been used to obtain high resolution imagery of a historical tsunami deposit in Andalusia, Spain, revealing grain-size distribution, structures, component analysis and sedimentary fabric.

Read More thumbnail image: Journal Highlight X-ray tomography of tsunami deposits Towards a new depositional model of tsunami deposits
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