Densities ρ and Viscosities ŋ of D-Galactose D-Maltose (0.05-0.4)M in aqueous solution (0.25) M Na2S at 298.15, 303.15 308.15K have been measured. From these experimental data, apparent molal Volume Limiting Apparent Molal ( ) ,The slope , Jones-Dole coefficient A B, The free energy activation viscous flow (ΔG*), enthalpies (ΔH*) Entropies (ΔS*) were calculated, values compatible with the weak ...

Type I (Na8Si46) or type II (Nax?24Si136) silicon clathrates films with a large 15 × 45 mm2 surface have been synthesized from p-type and intrinsic c-Si (001) wafers using two-step process without the need of any glove box. Conditions to selectively obtain either phase finely tuned. Optical absorption coefficients are found much larger in Si than diamond visible light range. provide direct band...

The effect of the number of amino acid residues in L-glycyl-L-glycine and L-glycyl-L-glycylL-glycine on thermal stability of powders, the sorption properties and surface morphology of thin films has been found. Dipeptide forms the film coated with disk-shaped nano-objects on the hydrophilic substrate, while tripeptide self-organizes to the film coated with nano-crystals on the hydrophobic subst...

For a further understanding of the phase transitions mechanism in type-I silicon clathrates K₈Si46, ab initio self-consistent electronic calculations combined with linear-response method have been performed to investigate the vibrational properties of alkali metal K atoms encapsulated type-I silicon-clathrate under pressure within the framework of density functional perturbation theory. Our lat...