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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".

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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.

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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.

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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.

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CheMin: Martian Mineralogy

Date: Aug 15, 2012

Author: David Bradley

Rocks are important. The ground beneath our feet, and all that…but on another horizon it is the chemistry of Martian rocks that are the focus of the CheMin system aboard NASA's recently landed Curiosity vehicle. The principal investigator NASA Ames Research Center heading the studies is David Blake.

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Journal Highlight: Parametric X-ray radiation as a novel source for X-ray imaging

Date: Aug 13, 2012

Author: spectroscopyNOW

A novel X-ray source based on parametric X-ray radiation and constructed from an irradiated single crystal has been demonstrated in phase-contrast imaging experiments.

Read More thumbnail image: Journal Highlight Parametric X-ray radiation as a novel source for X-ray imaging

X-ray batteries: Extra charges

Date: Aug 1, 2012

Author: David Bradley

US researchers have used X-ray diffraction and transmission X-ray microscopy to take a closer look at how lithium-sulfur batteries operate. Their observations might facilitate improvements in these short-lived devices and give a much-needed boost to electric vehicles.

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Keep going: Fuel cells

Date: Jul 15, 2012

Author: David Bradley

X-ray photoelectron spectroscopy has been used to verify the science underpinning a fuel cell that keeps going even after the hydrogen runs out.

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