An Approach to the Numerical Solution of the Basic Magnetostatic Equation for a Plane Parallel Plate with an Arbitrarily Shaped Inclusion

Computational Mathematics and Mathematical Physics - A configuration of magnets consisting of a homogeneous plate with a defect in the form of an internal cavity or inclusion of arbitrary shape is...     

Physical and Chemical Properties of the Guest–Host Inclusion Complexes of Cyprofloxacin with β-Cyclodextrin Derivatives

Moscow University Chemistry Bulletin - We study the effect of the nature of the substituent in the β-cyclodextrin derivative on the physicochemical properties of the antibacterial drug...     

Phosphorus sulfide as a functional material for sodium-ion batteries

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Regularities of salting-out and metal ion extraction by synergistic mixtures of potassium bis(alkylpolyoxyethylene)phosphate and alkylbenzyldimethylammonium chloride under polythermic conditions

The regularities of salting-out of a ionic associate formed by anionic oxyethylated surfactant (potassium bis(alkylpolyoxyethylene)phosphate) and cationic surfactant (alkylbenzyldimethylammonium chloride) with inorganic salts were studied. The possibility of using the ionic associate for thallium(III) and indium extraction in the presence of sodium chloride as a saltingout agent at 60 °C was proved.     

Solubility in the Na2Cr2O7-(NH4)2Cr2O7-K2Cr2O7-H2O system

Solubility in the Na₂Cr₂O₇-(NH₄)₂Cr₂O₇-K₂Cr₂O₇-H₂O four-component water-salt system at 25, 50, and 75°C was studied for the first time. Phase field boundaries for individual salts and potassium and ammonium dichromate solid solutions, monovariant lines, and invariant points were determined. Experimental data were used to optimize the looped isohydric process of potassium dichromate preparation involving additional salts.     

Use of water-surfactant-salting-out agent stratifying systems for extraction purposes

Phase and extraction equilibria were studied in water-surfactant (Synthamide-5, Oxyphos B, Catamine AB)-salting-out agent (inorganic salts and acids) systems.     

Regulation of acid phosphatase in reverse micellar system by lipids additives: structural aspects

Reverse micelles system is suggested as a direct tool to study the influence of membrane matrix composition on the activity and structure of membrane-associated enzymes with the use of acid phosphatase (AP) as an example. In reverse micelles the functioning of the monomeric and dimeric forms of AP could be separately observed by variation of the size of the micelles. We found that including the lipids into the micellar system can dramatically affect the enzyme functioning even at low lipid content (2% w/w), and this effect depends on the lipid nature. Structural studies using CD spectroscopy and DLS methods have shown that the influence of lipid composition on the enzyme properties might be caused by the interaction of lipids with the enzyme as well as by the influence of lipids on structure and properties of the micellar matrix.     

Charge transfer bands in the Eu3+ luminescence excitation spectra of isomeric europium pyridine-dicarboxylates

A ligand-cation charge transfer band was observed in the region of 360–400 nm in the Eu³⁺ luminescence excitation spectrum of europium 3,4-pyridine-dicarboxylates, but was absent in the spectra of europium 2,6-and 2,3-pyridine-dicarboxylates. This band is due to noticeable energy transfer through a charge-transfer state formed owing to the high polarizability of the ligand in the former compound. Energy transfer through the excited ligand-lanthanide charge-transfer state can explain the well-known effect of luminescence quenching by redox-sensitive lanthanide ions.