On the Superconductivity Suppression in EuPrBaCuO.

This article reports on the non-trivial suppression of superconductivity in the EuPrBCO cuprates. As non-magnetic Eu ions are replaced by Pr carrying a magnetic moment, spin-related superconductivity loss can be expected. The research shows that the superconductivity disappearance for > 0.

Identification of birch pollen species using FTIR spectroscopy.

In this study, the morphology and chemical composition of pollen grains of six birch species (, , , and ) were examined to verify which of these features allow distinguishing them in a more unambiguous way. For this purpose, scanning electron microscopy and light microscopy, as well as Fourier transform infrared (FTIR) spectroscopy and curve-fitting analysis of amide I profile, were performed. The microscopy images show that the pollen grains of , and are similar in diameter and significantly smaller than those of others species, with the largest diameter observed for .

The optimization of methods of synthesis of nickel-silver core-shell nanoparticles for conductive materials.

Nickel-silver core-shell (Ni@Ag) nanoparticles (NPs) were formed in a two-step process: (1) the formation of a dispersion of Ni NPs; and (2) the transmetalation (galvanic displacement) reaction, where the surface of the Ni NPs acted as the reducing agent of Ag ions. Ni NPs were synthesized by the 'wet' chemical method, i.e.

Design and assembly of ternary Pt/Re/SnO NPs by controlling the zeta potential of individual Pt, Re, and SnO NPs.

In this study Pt, Re, and SnO nanoparticles (NPs) were combined in a controlled manner into binary and ternary combinations for a possible application for ethanol oxidation. For this purpose, zeta potentials as a function of the pH of the individual NPs solutions were measured. In order to successfully combine the NPs into Pt/SnO and Re/SnO NPs, the solutions were mixed together at a pH guaranteeing opposite zeta potentials of the metal and oxide NPs.