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Organic chemistry. History and mutual relations of universities of Russia
The review describes the history of development of organic chemistry in higher schools of Russia over a period of 170 years, since the emergence of organic chemistry in our country till now.
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Article
Tricalcium Phosphate Ceramics Doped with Silver, Copper, Zinc, and Iron (III) Ions in Concentrations of Less Than 0.5 wt.% for Bone Tissue Regeneration
Novel materials with a variety of properties, such as biocompatibility, antibacterial activity, interconnected porosity, and functionalities combined in one, are required for regenerative medicine. Porous β-tr...
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Article
On the possibility for synthesizing dihydrotriazolothiadiazoles by condensation of 4-amino-2,4-dihydro-3H-1,2,4-triazole-3-thiones with aromatic aldehydes
Regardless of the conditions, the condensation of 4-amino-2,4-dihydro-3H-1,2,4-triazole-3-thiones with aromatic aldehydes afforded the corresponding hydrazones as the only product. Both initial amines and resulti...
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Article
Alkylation and Aminomethylation of 1,3-Dihydro-2Н-Benzimidazole-2-Thione
Alkylation of 1,3-dihydro-2Н-benzimidazole-2-thione (2-mercaptobenzimidazole) with bromoethane and chloroacetic acid derivatives occurrs at the sulfur atom, leading to the corresponding 2-sulfanylbenz-imidazol...
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Article
Synthesis and photolysis of N-phthalimidoaziridines with electron-withdrawing substituents
Mono-, bi-, tetra-, and pentacyclic N-phthalimidoaziridines with electron-withdrawing substituents in the three-membered ring have been obtained by the oxidative addition of N-aminophthalimide to dimethyl fuma...
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Article
Specific features of mental work capacity in 11-to 13-year-old schoolchildren during puberty
Experimental physiological, psychological, and hygienic studies were conducted for three years in the same fifth to seventh grade schoolchildren from 11 to 13 years of age. The findings made it possible to eva...
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Article
Morphofunctional Maturation of Preschool Children during Early Systematic Education
Experimental physiological, psychological, and hygienic longitudinal studies were carried out with children who began systematic develo** education in the first childhood period (from 4 years) at preschool e...
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Article
Oxidative addition ofN-aminophthalimide to conjugated azoalkenes. Synthesis of the first C-azoaziridines
The oxidation ofN-aminophthalimide with lead tetraacetate in the presence of \-phenylazostyrene or 1-phenylazocyclohexene results in phenylazo-1-phthalimidoaziridines, the first among derivatives of C-azoaziridin...
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Article
The prognostic significance of the adaptation potential of the cardiovascular system in 10- and 11-year-old children
Experimental physiological studies were made in 10–11-year-old boys and girls, students of a gymnasium and an education-upbringing complex. The functional parameters recorded in children momentarily included: ...
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Chapter
Band Intensities in IR Spectra of Hydrogen-Bonded Amides
Important place in the study of intermolecular interactions in polymers is reserved by IR spectroscopy, which allow one to determine the type of H-bond, content of associates, their thermodynamic parameters. I...
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Article
Refractometric determination of content of aromatic hydrocarbons in AI-93 gasolines
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Article
Theoretical and experimental study of capillary constraints on heat transfer in high-temperature heat pipes
The results are presented of experimental and theoretical studies concerning capillary constraints on heat transfer in high-temperature heat pipes, also of the effect of the compressibility of vapor on the cal...
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Article
Kinetics of the massive martensitic transformation in commercial carbon steels
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Raising the quenching temperature of commercial carbon steels to 1180–1200°C produces a mixture of massive an...
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Application of azeotropic mixtures as standards in testing gas chromatographic systems and components
The use of specially chosen azeotropes is proposed as standards when testing gas chromatographs, detectors, columns and sample introduction systems. These azeotropic mixtures permit us to minimize the errors d...
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Article
A modification of the internal normalization method with sample splitting
The procedure of sending a part of the sample vapor directly to the detector has been proposed earlier. This permits the quantitative determination of any sample component by relating its peak area to that of ...
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Article
Fatigue strength of austenitic manganese steels
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Article
Effect of microheterogeneities on the cold brittleness of low-alloy steel
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There is a correlation between the impact strength of low-alloy structural steel at negative temperatures and...
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Improving the mechanical properties of hot-rolled steel 10KhSND