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Article
Effect of the ZrO2 Content on the Strength Characteristics of the Matrix Material of Cdiamond–(WC–Co) Composites Synthesized by Spark Plasma Sintering
Abstract—For structurally homotypical specimens different in the ZrO2 content from the (94WC–6Co) + ZrO2 matrix material used in diamond-containing Сdiamond–(WC–Co) composites formed by spark plasma sintering, th...
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Article
Phase Formation and Diamond Retention in Cdiamond–(WC–Co)–ZrO2 Composites Formed by Spark Plasma Sintering Method
New data on the effect of a ZrO2 nanopowder additive (from 0 to 10 wt %) on phase formation and structural transformations in the hard-alloy matrix in the region of destruction under impact loading and on diamond...
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Article
Buccal Mesenchymal Stromal Cells as a Source of Osseointegration of Titanium Implants
We studied the interaction of human buccal mesenchymal stem cells (MSCs) and osteoblasts differentiated from them with the surface of titanium samples. MSCs were isolated by enzymatic method from buccal fat pa...
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Article
Structure of N,N-Dialkylamides of Diphenylphosphorylacetic Acid in Solution: Dipole Moments, IR Spectroscopy, and Quantum-Chemical Study
Conformational analysis of N,N-dialkylamides of diphenylphosphorylacetic acid has been carried out using the methods of dipole moments, IR spectroscopy, and quantum chemistry DFT B3PW91/6-311++G(df,p), including ...
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Article
Structural Changes of Phyto- and Zooplankton under the Influence of Climate Change and Anthropogenic Load (Lake Baikal, Russia)
The results of a contemporary study of hydrochemical parameters, structure, and quantitative indicators of phyto- and zooplankton in the Maloe More Strait of Lake Baikal are presented. When comparing new data ...
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Article
Studying the Proliferative Activity of Human Corneal Stromal Cell Populations
The proliferative activity of populations of stromal cells (fibroblasts) obtained from human corneal lenticles under conditions of their differentiation into keratocytes was studied. It was shown that during d...
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Article
Features Structure of the Сdiamond‒(WC‒Co)‒ZrO2 Composite Fracture Surface as a Result of Impact Loading
The effect of the addition of ZrO2 micropowder (in the range from 0 to 10%) on the structural changes of the hard alloy matrix in the area of fracture as a result of impact loading of a sample of composite diamon...
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Article
Effect of the CrB2 Additive Content on the Structure, Mechanical Properties, and Performance Characteristics of Diamond-Containing Cdiamond–(WC–Co) Composite Materials Formed by Spark Plasma Sintering
The structure and mechanical properties (hardness Н, elasticity modulus Е, estimative parameters for determining the resistance to elastic H/E and plastic Н3/Е2 deformations, ultimate bending Rbm and compression
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Article
Cdiamond–(WC–Co)–ZrO2 Composite Materials with Improved Mechanical and Adhesive Properties
The structure, mechanical properties (hardness H and elastic modulus E), evaluation parameters for determining the resistance of the material to elastic (H/E) and plastic (H3/E2) deformations, resistance 1/(E2/H)...
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Article
Mechanism of Formation of N-Methyl-N-[2-(diphenylphosphoryl)-ethyl]amide of (Diphenylphosphoryl)acetic Acid
The mechanism of formation of N-methyl-2-(diphenylphosphoryl)acetamide was studied by DFT. The first stage, the reaction of trichlorophosphine with 2-(diphenylphosphoryl)acetic acid, involves three elementary ste...
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Article
Conformational Analysis of Bis[N-alkyl-N-(2-diphenylphosphorylethyl)]amides of Diglycolic Acid
The conformational analysis of bis[N-alkyl-N-(2-diphenylphosphorylethyl)]amides of diglycolic acid has been carried out using the methods of dipole moments, IR spectroscopy, and quantum-chemical DFT B3PW91/6-311+...
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Article
Extraction of REE(III), U(VI), and Th(IV) with Bis[N-alkyl-N-(2-diphenylphosphinylethyl)]diglycolamides from Nitric Acid Solutions
Extraction ability of modified phosphoryl-containing diglycolamides [Ph2P(O)CH2CH2N(R)C(O)CH2]2O (R = Me, Bu, Oct) toward U(VI), Th(IV), and REE(III) ions in organic solvents from nitric acid solutions has been s...
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Article
Diphenyl(N-alkyl-N-diphenylphosphinylmethyl)carbamoylmethylphosphine Oxides: Synthesis and NMR Spectroscopy Study
Modified tridentate carbamoylmethylphosphine oxides Ph2P(O)CH2N(R)CH2P(O)Ph2 (R = Et, i-Pr, Bu, Oct) were synthesized by the reaction of phosphorylated amines Ph2P(O)CH2NHR (R = Et, i-Pr, Bu, Oct) with diphenylph...
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Article
Biocompatibility of Titanium Oxynitride Coatings Deposited by Reactive Magnetron Sputtering
Titanium oxynitride coatings deposited by reactive magnetron sputtering improve biocompatibility of vascular stents by increasing NO production, viability, and adhesion of EA.hy926 cells. Thus, the application...
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Article
Structure of Сdiamond–(WC–6Co)–ZrO2 Composites Formed by Electrical Plasma Spark Sintering
The effect produced by different concentrations of ZrO2 additives (from 0 to 10 wt %) on the morphology, structure, and content of diamond grains in the hard-alloy matrix of Сdiamond–(WC–6Co) diamond-containing c...
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Article
Effect of Erythropoietin on Mononuclear Cells of the Bone Marrow and Spleen
We studied the effect of preconditioning of human bone marrow mononuclear cells with erythropoietin on the immunophenotype of immunocompetent cells and paracrine activity of mouse splenocytes. The expression o...
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Article
Effect of Conditioned Media of Limbal Epithelial Cells and Corneal Stromal Cells on Functional Activity of Limb Mesenchymal Stem Cells
We studied the effect of conditioned media from limbal epithelial stem cells, fibroblasts, and corneal keratocytes on the functional activity of human limbal mesenchymal stem cells. It was shown that the condi...
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Article
Phase Formation and Physical and Mechanical Properties of Fe‒Cu–Ni‒Sn–VN Composites Sintered by Vacuum Hot Pressing for the Diamond Stone Processing Tools
The effect of the concentration of vanadium nitride additive (in the range from 0 to 10 wt %) on the phase formation, hardness, and fracture toughness of composite diamond-containing materials based on the 51F...
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Article
Spatial and Temporal Analysis of Nanoplanktonic Dinoflagellate Development in Lake Baikal
The dynamics of abundance has been analyzed in one of the main groups of modern plankton of Lake Baikal, mixotrophic nanoflagellates from the dinophyte division, the maximum number of which increased sharply c...
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Article
Extraction of REE(III), U(VI), and Th(IV) with Modified Carbamoylmethylphosphine Oxides from Nitric Acid Solutions
Modified extractants, carbamoylmethylphosphine oxides Ph2P(O)CH2CON(R)CH2P(O)Ph2 (R = Et, i-Pr, Bu, Oct), containing a phosphoryl group in the amide part of the molecule, have been synthesized. The extraction of ...
