Ca 2+ /Sr 2+ /Ba 2+ dependent phase separation, nanocrystallization and photoluminescence in fluoroaluminosilicate glass

Epac 2 Mediates Cardiac 1 - Adrenergic Dependent SR Ca 2 + Leak and Arrhythmia

Predicting local SR Ca(2+) dynamics during Ca(2+) wave propagation in ventricular myocytes.

Of the many ongoing controversies regarding the workings of the sarcoplasmic reticulum (SR) in cardiac myocytes, two unresolved and interconnected topics are 1), mechanisms of calcium (Ca(2+)) wave propagation, and 2), speed of Ca(2+) diffusion within the SR. Ca(2+) waves are initiated when a spontaneous local SR Ca(2+) release event triggers additional release from neighboring clusters of SR r...

Ca-for-Sr substitution in the thermoelectric [(Sr,Ca)2(O,OH)2]q[CoO2] misfit-layered cobalt-oxide system

Calcium-for-strontium substituted samples of the misfit-layered cobalt-oxide system, [(Sr1 xCax)2 (O,OH)2]q[CoO2], were successfully synthesized up to x1⁄40.2 with a sample-encapsulation technique originally developed for the x1⁄40 end phase. While the x1⁄40 sample has a commensurate match between the two layer blocks (i.e. q1⁄40.5), isovalent Ca-for-Sr substitution induces latticemisfit (i.e. ...

Synthesis and Luminescent Properties of M 2 V 2 O 7 : Eu ( M 0 Sr , Ba )

A solution combustion route for the synthesis of Eu-activated M2V2O7 (M 0 Sr, Ba) and their luminescent properties have been investigated. Structure and luminescent characteristics of Sr2V2O7:Eu 3+ and Ba2V2O7:Eu 3+ nanophosphors have been studied by x-ray diffraction, scanning electron microscopy, transmission electron microscopy, fluorescence spectrometry and Fourier transform infra-red spect...

Microscopic origin of large negative magnetoelectric coupling in Sr(1/2)Ba(1/2)MnO3.

With a combined ab initio density functional and model Hamiltonian approach we establish that in the recently discovered multiferroic phase of the manganite Sr(1/2)Ba(1/2)MnO3 the polar distortion of Mn and O ions is stabilized via enhanced in-plane Mn-O hybridizations. The magnetic superexchange interaction is very sensitive to the polar bond-bending distortion, and we find that this dependenc...