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Muse on X-rays: Supermassive black hole

Date: Dec 1, 2012

Author:

A supermassive black hole 12.4 billion light years from Earth is pumping out a jet of X-rays that could give astronomers using NASA's Chandra X-ray Observatory a glimpse into how such bodies form and the role they play in galaxy formation in the early universe.

Read More thumbnail image: Muse on X-rays Supermassive black hole

Xenon warriors' success: Supercharged

Date: Nov 15, 2012

Author:

It is now possible to use a coherent light source to strip electrons from relatively inert xenon atoms at much lower energies than previously considered plausible. Using the Linac Coherent Light Source (LCLS) at the US Department of Energy's SLAC National Accelerator Laboratory, the researchers involved have shown that they can create a "supercharged" form of xenon.

Read More thumbnail image: Xenon warriors success Supercharged

Journal Highlight: Analysis of the Hoard of Beçin using X-ray-based techniques

Date: Nov 12, 2012

Author: spectroscopyNOW

A total of 416 coins from the 60,000 in the Hoard of Beçin from the Ottoman Empire were analysed by µ-synchrotron micro X-ray fluorescence analysis and µ-proton-induced X-ray emission to confirm their fineness and provenance.

Read More thumbnail image: Journal Highlight Analysis of the Hoard of Becin using X-ray-based techniques

Hand-holding molecules: X-rayed chaperones

Date: Nov 1, 2012

Author: David Bradley

X-ray crystallography has been used to identify two new small chaperone molecules. The targets may prove useful in developing the first pharmaceutical treatment for the rare but debilitating inherited metabolic disorder Schindler/Kanzaki disease.

Read More thumbnail image: Hand-holding molecules X-rayed chaperones

Nobel chemistry: pharma directions

Date: Oct 10, 2012

Author: David Bradley

The Royal Swedish Academy of Sciences has awarded the 2012 Nobel Prize in Chemistry jointly to Robert Lefkowitz of the Howard Hughes Medical Institute and Duke University Medical Center and Brian Kobilka Stanford of the University School of Medicine, Stanford "for studies of G-protein–coupled receptors".

Read More thumbnail image: Nobel chemistry pharma directions

Journal Highlight: In situ removal of carbon contamination from optics in a vacuum ultraviolet and soft X-ray undulator beamline using oxygen activated by zeroth-order synchrotron radiation

Date: Oct 8, 2012

Author: spectroscopyNOW

An in situ method involving the use of oxygen activated by zeroth-order synchrotron radiation was used to clean the optics in a vacuum ultraviolet and soft X-ray undulator beamline.

Read More thumbnail image: Journal Highlight In situ removal of carbon contamination from optics in a vacuum ultraviolet and soft X-ray undulator beamline using oxygen activated by zeroth-order synchrotron radiation

Stroke protection: Nanoparticles X-rayed

Date: Oct 1, 2012

Author: David Bradley

Ceria nanoparticles have been tested as putative agents to protect against the deleterious effects on the brain of ischaemic stroke. X-ray photoelectron spectroscopy provides the detailed clues.

Read More thumbnail image: Stroke protection Nanoparticles X-rayed

On the hop: iron oxide nanoparticles

Date: Sep 15, 2012

Author: David Bradley

High-intensity X-rays have allowed an international team to investigate how electrons hop around within nanoparticles of iron oxide for the first time. The work could offer new insights not only into the motion of electrons in rust, but also how one of the most abundant minerals affects the condition of soil and water around it. The same insights might also inform developments in electron-transfer processes in biology and solar energy conversion.

Read More thumbnail image: On the hop iron oxide nanoparticles

Journal Highlight: A total reflection X-ray fluorescence method for the determination of chlorine at trace levels in nuclear materials without sample dissolution

Date: Sep 10, 2012

Author: spectroscopyNOW

A total reflection X-ray fluorescence method is described for the determination of chlorine at trace levels in nuclear fuel samples such as U3O8, (U,Pu)C, PuO2 and Pu alloys.

Read More thumbnail image: Journal Highlight A total reflection X-ray fluorescence method for the determination of chlorine at trace levels in nuclear materials without sample dissolution

TB or not TB: Efflux X-rayed

Date: Sep 1, 2012

Author: David Bradley

Edward Yu's team at Iowa State University have taken another step forward in our understanding of this pressing issue by using crystallography to reveal the structure of a protein regulator that controls the expression of the multidrug efflux pump in Mycobacterium tuberculosis.

Read More thumbnail image: TB or not TB Efflux X-rayed
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