This article presents the method of extraction-preconcentration of Lead, Cadmium, and Nickel ions from food samples using the Ghezeljeh montmorillonite nanoclay (Geleh-Sar-Shoor) as a new native adsorbent in batch single component systems. The extractionpreconcentration of heavy metals were carried out by applying the solid phase extraction (SPE) method followed by atomic absorption spectroscop...

Background and objective:FAM20A gene mutations result in enamel renal syndrome (ERS) associated with amelogenesis imperfecta (AI), nephrocalcinosis, gingival fibromatosis, and impaired tooth eruption. FAM20A would control the phosphorylation of enamel peptides and thus enamel mineralization. Here, we characterized the structure and chemical composition of unerupted tooth enamel from ERS patient...

Fly ash, bottom and bentonite have potential to be used as geopolymer precursors, because they contain high silica alumina. Until now there has been no research that combines these three materials materials. This aims incorporate an aluminosilicate source in the fly ash based geopolymer. Geopolymer concrete was made by mixing alkaline activator, aggregate (gravel), superplasticizer, water. The ...

Stained glass paint layers made with vitreous paints can be a challenging subject for analyses. Their heterogenic structure requires proper experimental methodology in order to obtain valuable data. The main goal of this paper is present the advantages macro-XRF scanning (MA-XRF) non-destructive investigation historical grisaille on basis research conducted seven stained panels from Dominican M...

The use of gold for artefact productions underwent substantial developments during Iron Age in western Europe, with the diversification alloy compositions and introduction new technologies aesthetics. This work presents a detailed study Late earring from Iberian Peninsula discussion taking into consideration alloys used at time. has complex structure, composed block- strip-twisted wires granula...

TiCl2/nano-γ-Al2O3 as a new heterogeneous Lewis acid catalyst was synthesized and characterized by FE-SEM, XRD, FT-IR, EDS, XRF, BET and TGA. N-substituted pyrroles have been synthesized via Paal–Knorr reaction in the presence of TiCl2/nano-γ-Al2O3 at room temperature under solvent-free conditions.

The Kosa (yellow sand) aerosol affects the global environment as well as human health because it migrates from the interior of China to other areas, absorbing various atmospheric elements. Investigation into individual Kosa aerosol particles, which are submicroscopic to several tens of micrometers in diameter, is required to resolving the issue. We installed a scanning electron microscope (SEM)...

TiCl2/nano-γ-Al2O3 as a new heterogeneous Lewis acid catalyst was synthesized and characterized by FE-SEM, XRD, FT-IR, EDS, XRF, BET and TGA. N-substituted pyrroles have been synthesized via Paal–Knorr reaction in the presence of TiCl2/nano-γ-Al2O3 at room temperature under solvent-free conditions.