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19  Articles
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The bipyramid for the first time is considered as a 6-knots finite element (FE) in the article. For the construction of her biquadratic basetwo different approaches are used: matrix method and internal condensation method for the bipyramid’s base as a 7-k... see more

Metallic nanoparticles as antibacterial agents have been studied for several years. The most used antibacterial nanoparticles are silver nanoparticles. The mechanisms and  antibacterial properties of silver nanoparticles are well known, but the effec... see more

O-3-X-5-YC6H2CH=NCH(CH2C6H4OH-4)COO] (R, X, Y = Et, H, H (1); n-Bu, H, Br (2); n-Bu, Br, Br (3)), have been synthesized by the one-pot reaction of diorganotin oxide, (L)-tyrosine and salicylaldehyde, and characterized by elemental analysis, IR, NMR, and X... see more

The paper describes the later mineral assemblage at the Santa Catarina fluorite mining district, recently recognized in the Cocal fluorite ore vein. In this assemblage, the barite crystals are perfect, centimetric and translucent. The habitprismatic, gran... see more

The clustering aspects in alpha-conjugate nuclear system 20Ne has been investigated comparatively within microscopic and macroscopic approaches of relativistic mean field theory (RMFT) and quantum mechanical fragmentation theory (QMFT), respectively. For ... see more

Iron-sulfide formation in estuarine environments is controlled by sulfur availability, which is distinct in each subenvironment. Along the mesotidal, mixed-energy Huelva coast, s.w. Spain, appreciable quantites of iron sulfide appear in all the estuarine ... see more

The structural properties, crystalline and  clustering  behavior of xNa2O·(1-x)TeO2 (15 £ x £ 65 mol% glasses have been investigated by FTIR spectroscopy, X-ray diffraction (XRD), differential scanning calorimetry (DSC) and scanning   ... see more

Mononuclear copper(II) complex [CuLCl2] where L = (2-methylsulfanyl-phenyl)-(phenyl-pyridin-2-yl-methylene)amine, a tridentate NNS donor Schiff base ligand has been synthesized and characterized by microanalysis, IR, UV-Visible spectra and magnetic studie... see more

Abstract: Two new cyclohexyltin N-(salicylidene)valinates, [2-HOC6H4CH=NCH(CH(CH3)2)COO]SnCy3 (1) and [2-OC6H4CH=NCH(CH(CH3)2)COO]SnCy2 (2) (Cy = cyclohexyl), have been synthesized and characterized by elemental analysis, IR, and 1H NMR. The crystal struc... see more

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