Partial least squares modeling as a powerful multivariate statistical tool was applied tothe simultaneous spectrophotometric determination of silicate and phosphate in aqueoussolutions. The concentration range for silicate and phosphate were 0.02-0.6 and 0.4-3 μg ml-1,respectively. The experimental calibration set was composed with 30 sample solutions using amixture design for two component mix...

Calcium ions react with silicic acid released from dissolving porous silicon nanoparticles to create an insoluble calcium silicate shell. The calcium silicate shell traps and protects an siRNA payload, which can be delivered to neuronal tissues in vitro or in vivo. Gene delivery is enhanced by the action of targeting and cell-penetrating peptides attached to the calcium silicate shell.

Large deviations in ɛHf(T) from bulk silicate Earth seen in N4 Ga detrital zircons from Jack Hills, Western Australia, have been interpreted as reflecting a major differentiation of the silicate Earth at 4.4 to 4.5 Ga. We have expanded the characterization of Hf/Hf initial ratios (Hf ) in Hadean zircons by acquiring a further 116 laser ablation Lu–Hf measurements on 87 grains with ion microprob...

This work is aimed at reconstructing the water-rock interaction processes controlling geochemical characteristics of shallow or relatively groundwaters Pollino National Park, based on data acquired for 105 water samples from local springs. Reaction path modeling rock dissolution was carried out in a purely stoichiometric mode main lithotypes cropping study area, that is, limestone, Mg-limestone...

Application of silicate solutions to living or heat-killed pneumococci and to certain "viridans" streptococci causes their conversion from a Gram-positive to a Gram-negative state. The original staining properties can be restored by suspending the silicate-treated bacteria in alkaline solutions of various salts but not by simple washing in water. Living pneumococci and the strains of streptococ...

We present a photometric selection method for ULIRGs in the redshift range of z = 1 – 2. We utilize the most prominent spectral feature of ULIRGs, i.e. the silicate absorption feature at 9.7 μm and an optimized filter system at mid-infrared wavelengths. These ‘silicate-break’ galaxies could be selected by using colour anomalies owing to the silicate absorption feature around 9.7(1+z) μm. Such f...