The Charge Distribution, Seebeck Coefficient, and Carrier Concentration of CuCrLnS (Ln = Dy-Lu).

The atom oxidation states were determined using the binding energies of the core S2p-, Cu2p-, Cr2p-, and Ln3d-levels in CuCrLnS (Ln = Dy-Lu) solid solutions. The charge distribution on the matrix elements (Cu, Cr, and S) remained unaffected after cationic substitution. The sulfur atoms were found to be in the S oxidation state, the copper-Cu, and the chromium-Cr.

Charge Distribution in Layered Lanthanide-Doped CuCrLnS (Ln = Pr-Tb) Thermoelectric Materials.

The charge distribution study of metal atoms in CuCrLnS (Ln = Pr-Tb) solid solutions was carried out using X-ray photoelectron spectroscopy (XPS). The analysis of the binding energy of S2p, Cu2p, Cr2p, Ln3d and Ln4d levels allows one to determine the oxidation state of atoms. Copper atoms were found to be monovalent.

Magnetic Properties of Novel Layered Disulfides CuCr0.99Ln0.01S2 (Ln = La…Lu).

The comprehensive study of the lanthanide-doped solid solutions CuCrLnS (Ln = La…Lu) magnetic properties was carried out using static magnetochemistry and differential scanning calorimetry techniques. It was shown that magnetic properties of CuCrLnS are significantly affected by the magnetic properties of the lanthanide ion. The magnetic susceptibility and the effective magnetic moment were found to deviate from the Curie-Weiss law in the temperature 90 K below and 50 K above the order-disorder transition at 695 K.

Effect of the Order-Disorder Transition on the Electronic Structure and Physical Properties of Layered CuCrS.

The work reports a comprehensive study of the Seebeck coefficient, electrical resistivity and heat capacity of CuCrS in a wide temperature range of 100-740 K. It was shown that the value of the Seebeck coefficient is significantly affected by the sample treatment procedure. The order-to-disorder (ODT) phase transition was found to cause a metal-insulator transition (MIT).

Protein SgpR of Pseudomonas putida strain AK5 is a LysR-type regulator of salicylate degradation through gentisate.

Pseudomonas putida strain AK5 was the first characterized natural strain containing the 'classical' nah1 operon and nahR gene along with genes whose products are responsible for the less explored pathway of salicylate degradation through gentisate (the sgp operon). The sgp operon was found to be preceded by the divergently directed sgpR gene. The amino acid sequence of the sgpR product qualifies it as a LysR-type transcriptional regulator (LTTR) and suggests its potential function as an sgp operon transcriptional regulator.