The reaction between hydrogen and erbium has been studied by DFT calculations. The enthalpies of formation of the compounds Er, ErH, ErH2 and ErH3 generated by the ordered insertion of hydrogen atoms in the tetrahedral and octahedral (or triangular) sites of the fcc and hcp structures have been ...

The dissociative ionization of NH3 is investigated in its N+ dissociation channel in the 20–50 eV electron energy range. Both the translational energy distribution and the appearance energies are measured. The kinetic energy versus appearance energy plot reveals seven N+ producing processes. Ne...

Structured emission spectra have been observed from ND3 excited at 2139 Å and 2144 Å. The emission is short-lived (τ12

The i.r. spectra of methanol—ammonia and methanol—triethylamine systems in the solid state are reported, and the internal modes of CH3OH · NH3, CH3OD · ND3 and CD3OD · ND3 and the OH(D) stretching of (methanol)n · triethylamine (n = 1 or 2) are assigned. The OH(D) stretching in the for...

The G protein-coupled receptors (GPCRs) composed a superfamily that played an important role in physiological processes of crustaceans, with multiple functions such as growth and development, acting as a defense against stimulations from external factors. In this paper, one kind of GPCRs were id...

New high resolution photoelectron spectra of ammonia and ammonia-d3 are reported. The spectra of both compounds show two ionization processes corresponding to ionization from the 3a and 1e molecular orbitals. The first band in the photoelectron spectrum of each compound shows a well-resolved vib...

Infrared spectra of ammonia and ammonia-d3 isolated in a nitrogen matrix have been recorded between 4000 and 200 cm−1. Spectra were studied as functions of temperature between 6 and 20 K and of concentration. The effects of temperature variation are partly irreversible and partly reversible. The...

The dissociative electroionization of NH3 (ND3), in the NH2+ (ND2+) dissociation channels, is investigated in the 15–50 eV electron energy range. The translational energy distributions of ND2+ (NH2+) exhibit several components, whereas NH+only shows a continuous, broad distribution. For both io...

The dissociative electroionization of NH3 (ND3), in the H+ (D+) and H2+ (D2+) dissociation channels, is investigated in the 18–50 eV electron energy range. The H+ (D+) translational energy distribution spectrum shows several components and that of H2+ (D2+) is continuous. The thermal energy com...

In this study we have used various laser spectroscopic studies to investigate the neutral excited state and cationic ground state of the NH···N and NH···O bound complexes of an N–heterocyclic aromatic compound, benzimidazole (BIM). The complexes of BIM with ammonia and water were formed u...

Liver failure altered P-glycoprotein (P-gp) function and expression at blood-brain barrier (BBB), partly owing to hyperammonemia. We aimed to examine the effects of partial portal vein ligation (PVL) plus chronic hyperammonemia (CHA) on P-gp function and expression at rat BBB. Experimental rats ...

The paper describes the tests carried out for the extraction of radionuclides 90Sr, 137Cs and 60Cо by manganese oxyhydroxide in order to compare the sorption properties of the respective particles with Sr(II), Cо(II), Cе (III), Eu (III) ions. It was found that the recovery efficiency and the ...

Surface and bulk chemical and elemental composition of the rare earth sulfates of cerium(III), cerium(IV), lanthanum(III) and samarium(III) were characterized during various stages of thermal decomposition. Decomposition was conducted under both vacuum and atmospheric conditions. In situ analysi...

Investigation of cerium sulfate species on sulfated SbVCT (Sb/V/Ce/Ti) catalysts at various temperatures was carried out by diffused-reflectance infrared Fourier-transform spectroscopy (DRIFTs) analysis. The catalyst sulfated at a high temperature, SbVCT (500s-1) (i.e., sulfated at 500 °C), exh...

Zirconium titanate (ZrTiO4) modified via cerium ions insertion in the oxide lattice has been successfully prepared via Sol-Gel synthesis forming solid solutions in the molar range between 0 and 10%. Cerium ions are hosted both as Ce4+ and Ce3+ ions whose ratio depends on the treatment undergone ...

Industrial-scale rare earth extraction is typically performed by liquid-liquid extraction with large amounts of solvents, acids and organophosphorus ligands. An alternative is to use these extractants in supercritical CO2 (SC-CO2), where the crucial operating parameter is their solubility. Diffe...

A sodium borate glass containing both trivalent cerium oxide and tetravalent cerium oxide states nano particles of 2–5 nm in size was successfully prepared by doping the glass with varying amounts of cerium (IV) oxide with. X-ray absorption spectroscopy measurement was used to determine the coe...

Cerium oxide (CeO2) nanoparticles present an interesting material for various applications in biotechnology and medicine. The mechanism of CeO2 nanoparticles activity is supposed to be related to the presence both Ce3+ and Ce4+ ions on the surface of the nanocrystal. Due to the Ce3+ ions, the ch...

Carbon-based electrodes are promising for flow batteries. While cerium redox reactions on carbon materials have been investigated, further studies are of necessity to improve the fundamental understanding of the impact of surface functionalization on reaction kinetics. An electrochemical study o...

Production of H2 via water splitting reaction driven by concentrated solar power is one of the promising ways to fulfill the future energy demand. In this investigation, the cerium oxide – cerium sulfate H2O splitting (WS) cycle was thermodynamically analyzed and the obtained outcomes were comp...