Science Highlights

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Metallic Glass: A Crystal at Heart

Researchers squeezed samples of a metallic glass between the tips of two diamonds in a diamond anvil cell at X-ray beamline 16-ID-B of the High Pressure Collaborative Access Team at the U.S.

August 1, 2011
An Understanding of Elastin's Properties Springs Forth

Physiological flexibility comes from the protein elastin, deriving properties from the building-block molecule tropoelastin, which behaves as an ideal elastomer because it loses no energy between s

September 1, 2011
New TRIXS for measuring low energy surface and interfacial electronic structure at in situ conditions

While high energy X-ray methods have been widely used to study the structure and spectroscopy of surfaces and interfaces in extreme environments, light element and valence excitations need lower en

September 1, 2011
Fig.1. C. moniliferum cell morphology and crystals. (A) Confocal microscopy image showing the prominent lobes of the two chloroplasts (red); cell membrane in green. (B) DIC image of BaSO4 crystals (arrow) in the terminal vacuole; arrowhead indicates a pyrenoid. (C) SEM image of rhombic (arrow) and hexagonal (arrowhead) BaSO4 crystals that remain after cells have been ashed to remove organic material. (D) Illustration showing approximate locations of freeze-fracture cross-sections analyzed by cryo-SEM
How Algae Use a "Sulfate Trap" to Selectively Biomineralize Strontium

Over the years, researchers have looked to a small number of organisms, including the desmid green alga Closterium moniliferum, because of their ability to selectively sequester strontium,

October 1, 2011
Thinnest Nanofiltration Membrane to Date is Produced

A separation membrane is a key component in both nanofiltration and reverse osmosis filtration systems.

October 1, 2011
Structure of 2-oxo-3-deoxygalactonate kinase from Klebsiella pneumoniae.
Researchers determine three dimensional structure of galactose metabolic pathway protein

In most organisms, efficient D-galactose utilization is accomplished via a well-studied pathway known as the Leloir pathway.

October 3, 2011
Accelerating insights gleaned from leadership-class supercomputing simulations

Argonne computer scientists have devised a software-based approach, called GLEAN, to improve I/O performance on its IBM Blue Gene/P by exploiting the machine's network topology to intelligently agg

November 1, 2011
Creating the Heart of a Planet in the Heart of a Gem

Although materials scientists have theorized for years that a form of super-dense aluminum exists under the extreme pressures found inside a planet's core, no one had ever actually seen it, until n

November 1, 2011
Improving HPC I/O performance on leadership class supercomputers

On the leadership computers at Argonne National Laboratory, these approaches yield up to 53% improvement in performance over the existing I/O forwarding mechanism and close to 95% efficiency.

November 1, 2011
New Measurement of the Size of the Proton

A recent measurement at JLab of the elastic scattering of electrons on the proton provides a new, high-precision value for the charge radius of the proton.

November 1, 2011