The volumetric hydrogen density of 160 kg H/m3 in TiVCrNbH8 is among the highest for interstitial hydrides, but reported reversible capacity only about 2/3 full theoretical at room temperature. In present work we have investigated local structure TiVCrNbDx, x=0, 2.2, 8 with aim to unravel how remaining sites can be destabilized respect hydrogen/deuterium occupation using total scattering measur...

The volumetric hydrogen density of 160 kg H/m3 in TiVCrNbH8 is among the highest for interstitial hydrides, but reported reversible capacity only about 2/3 full theoretical at room temperature. In present work we have investigated local structure TiVCrNbDx, x=0, 2.2, 8 with aim to unravel how remaining sites can be destabilized respect hydrogen/deuterium occupation using total scattering measur...

introduction : this investigation evaluates the effects of mineral trioxide aggregate (mta), calcium hydroxide (ch) and calcium enriched mixture (cem) as pulp capping materials on dental pulp tissues. materials and methods: the experimental procedures were performed on eighteen intact dog canine teeth. the pulps were exposed. cavities were randomly filled with cem, mta, or ch followed by glass ...

Using a combination of TEM and XPS, we made an analysis of the complex high-temperature annealing effect on ultrathin titanium deuteride (TiD(y)) films evaporated on a Si(100) substrate and covered by an ultrathin palladium layer. Both the preparation and annealing of the TiD(y)/Pd bi-layer films were performed in situ under UHV conditions. It was found that the surface and bulk morphology of t...

Reaction resonances are transiently trapped quantum states along the reaction coordinate in the transition state region of a chemical reaction that could have profound effects on the dynamics of the reaction. Obtaining an accurate reaction potential that holds these reaction resonance states and eventually modeling quantitatively the reaction resonance dynamics is still a great challenge. Up to...

The kinetics of H(D) absorption into a b-phase PdHx (PdDx) electrode are discussed numerically, based on the Volmer–Tafel route of the hydrogen (deuterium) evolution reaction and thermodynamic and kinetic data of H(D) in the b-phase PdHx (PdDx). It is found that the asymptotic loading ratio of H(D) is determined only by the Tafel step under galvanostatic conditions. The kinetics of H(D) absorpt...