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Article
Features of physicochemical properties of the hydroxyapatite—ruthenium system depending on the stage of metal ion introduction into the cocrystallization process
The influence of small amounts of ruthenium(iii) ions on the morphology, phase composition, and structure of the products formed under the conditions of hydroxyapatite (HAP) synthesis was studied by electron micr...
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Article
Kinetics of sequential and parallel sorption of zinc and albumin on hydroxyapatite
The sorption kinetics of zinc ions and bovine serum albumin (BSA) on the surface of suspended hydroxyapatite (HAP) was studied. The sorption kinetics of zinc ions and BSA is described by the pseudo-second-orde...
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Article
Features of sorption binding of Y3+ ions with hydroxyapatite of various textural organization
The parameters of the sorption of yttrium ions on hydroxyapatite samples of various textural organization, viz., lamellar nanoparticles (HAPn) and porous microparticles synthesized by the enzymatic method (HAPe),...
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Article
Open AccessNumerical Investigation of the Effect of Porous Wing Elements on the Properties of Supersonic Tip Vortices
The effect of a porous wingtip on tip vortex formation and properties in a supersonic flow is studied. It is established that a porous wingtip has a considerable effect on the vortex structure and parameters r...
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Article
High-Speed Channel Flow Control with Porous Inserts
This article studies modeling a supersonic gas flow in a channel with porous inserts. In one of the variants, it is possible to achieve the disappearance of the separation zone at the point of reflection of th...
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Article
Calculation of High-Speed Flows Based on a Hyperbolic Quasi-Gas-Dynamic System
Based on a compact version of the hyperbolic system of quasi-gas-dynamic equations, a numerical algorithm for unstructured meshes is developed and implemented on modern multiprocessor K-100 and K-60 computing ...
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Article
Sorption and cocrystallization binding of ZrIV ions with hydroxyapatite as a promising carrier of medical radionuclide 89Zr
A significant difference in behavior of ZrIV ions during their cocrystallization and sorption binding to hydroxyapatite (HAP) is demonstrated. When the concentration of do** ions exceeds 10−4 mol L−1, a chemica...
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Article
Specific features of sorption of bovine serum albumin on hydroxyapatite doped with zinc ions, and the possibilities of its use as an intermediate binding protein for heterocyclic ligands
In order to characterize hydroxyapatite (HAP) as a possible carrier of medicinal drugs and radionuclides, the possibility of using HAP modified with zinc ions (HAP-Zn) for the sorption of albumin, in particula...
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Article
Modified hydroxyapatite as a carrier for 69mZn
Sorption of zinc ions and 69mZn radionuclide proceeds much more rapidly on hydroxyapatite modified with zinc ions (HAP-Zn) than on unmodified HAP. The sorption can be described by a pseudo-second order model and ...
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Article
36Cl Examination of the Adsorption Behavior of Chloride Anion during the Adsorption of MgCl2 on Hydroxyapatite at a High Adsorbate Concentration
Using a 36Cl radioactive label, we study the behavior of chloride ions during the adsorption interaction of hydroxyapatite (HA) with an aqueous solution of magnesium chloride at high concentrations. The kinetics ...
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Article
Diffusion and Sorption of Radium and Strontium in a Layer of Porous Sorbent Based on Hydroxyapatite
A cell for studying the diffusion of therapeutic medical radionuclides into the macrolayer of the carrier sorbent was fabricated using 3D printing. The diffusion of ultramicroquantities of radium and strontium...
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Article
Sorption and diffusion behavior of actinium(iii) ions in contact with hydroxyapatite as a transporter of medical radionuclides
The sorption of the actinium(iii) ions as 225,228Ac isotopes on hydroxyapatite (HAP) with various textures was studied. A “reverse” generator using an extraction chromatographic sorbent based on diglycolamide der...
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Article
X-ray Photoelectron Spectroscopy Study of Mg Adsorption on Nanocrystalline Hydroxyapatite
We have studied Mg2+ adsorption on hydroxyapatite (HAp) nanocrystals and constructed its isotherm at equilibrium cation concentrations in the range 0–0.35 mol/L. For a number of samples, corresponding to characte...
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Article
Characteristic Features of Mg2+ Behavior and Mg2+ Effect on the Structure and Morphology of Nanohydroxyapatite in the Adsorption Method for the Fabrication of the HA-Mg Composite
Characteristic features of the sorption interaction of magnesium(II) ions in aqueous solutions with hydroxyapatite nanoparticles used as the sorbent were elucidated. The process kinetics was found to be adequa...
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Article
Sorption of bismuth(iii) and its chloride complexes with 2-aminopyrimidine cation on hydroxyapatite of various textures
Specific features of the interaction between bismuth(iii) and hydroxyapatite (HAP) of various morphologies during its sorption and co-crystallization binding were revealed. The obtained sorption isotherms nearly ...
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Article
Effect of Synthesis Medium on the Structure and Physicochemical Properties of Biomineral Composites Based on Hydroxyapatite and Hyaluronic Acid
Dispersions based on sodium hyaluronate and hydroxyapatite, which is synthesized both by the classical method in an aqueous medium to obtain submicron particles and in a bioactive hyaluronan medium with the fo...
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Article
Nanohydroxyapatite and its textures as potential carriers of promising short-lived lead isotopes
The possibility of sorption and cocrystallization binding of lead(n) with nanohydroxyapatite (HAP) acting as a potential carrier of short-lived lead radionuclides 211,212Pb was studied. The peculiarities of the k...
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Article
Composite Films Based on Bacterial Cellulose and Nanocrystals of Hydroxyapatite: Morphology, Structure, and Properties
A new composite material that is a layered film based on cellulose obtained by static cultivation of Komagataeibacter rhaeticus and hydroxyapatite nanocrystals was studied. Samples with a mass ratio of cellulose ...
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Article
Sorption Interaction with Water of Hydroxyapatite, Hyaluronic Acid, and β-Casein, Individual Components of Synthetic Biomineral Compositions
A comparative study of the specificity of the interaction with water of individual components of organomineral complexes, namely, hydroxyapatite, hyaluronic acid, and casein, is carried out. The quantitative p...
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Article
Dynamics of Sorption—Desorption of 223Ra Therapeutic α-Emitter on Granulated Hydroxyapatite
The dynamics of the 223Ra distribution in the volume of spherical hydroxyapatite (HAP) granules in the course of the 223Ra sorption from aqueous solutions onto sorbent particles and desorption was studied by α-tr...
