Motion of a particle in the field of a rotating body in the post-Newtonian approximation. Alternative solutions

The components of the gravitational field are compared in the post-Newtonian approximation in the geometric (Einstein tensor) and field (Maxwellian vector form) theories of gravitation. The fundamental difference of these fields in the motion of a test particle is shown. The feasibility of qualitative detection of the vortex component of the gravitational field is found experimentally. The scheme for an alternate experiment is given.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 5, pp. 15–18, May, 1990.The author thanks A. S. Lantsev for the experimental part of the article presented here.     

Fuel Oil Pyrolysis Initiated by Propane-Butane-Oxygen Flame

The parameters of fuel oil pyrolysis initiated by propane-butane-oxygen flame were studied as influenced by the temperature in the pyrolysis zone, time of the fuel oil contact with the initiating flame, and fuel oil feed rate. The experimental data on thermal and flame-initiated fuel oil pyrolysis were compared.     

Hydrogention and Oxidation of Allyl Alcohol in the Presence of Colloid Palladium In Situ

Kinetic regularities of hydrogenation, oxidation with oxygen, and condensation of allyl alcohol in the presence of colloid palladium in situ were revealed. A mechanism of the reactions was proposed.     

Mechanism of the reaction of epithiochlorohydrin with nucleophiles

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, p. 1424, October, 1988.     

Kinetics of oxidation of lower olefins with Fe(III) aqua ions in the presence of the Pd/ZrO2/SO4 precatalyst in a chloride-free system

The kinetics of oxidation of ethene, propene, and 1-butene with Fe(III) aqua ions to the corresponding carbonyl compounds in the presence of the 1% Pd/ZrO₂/SO₄ precatalyst in aqueous perchloric acid at 40–80°C was studied. The oxidation rate increases in the order C₂H₄ < C₄H₈ < C₃H₆ and with increasing catalyst weight and in the acid and Fe(III) concentrations; it is independent of the olefin pressure. The ethene oxidation rate is described by the Michaelis-Menten equation. In the case of 1-butene, the reaction is accompanied by migration of the double bond with the formation of 2-butene.     

Ring-chain tautomerism of substituted hydrazones

1-Hydrazino-2-propanol reacts with aliphatic carbonyl compounds to form the corresponding (2-hydroxypropyl)hydrazones. 1-(N-Alkylhydrazino)-2-propanols, on the other hand, give tautomeric mixtures of alkyl-substituted perhydro-1,3,4-oxadiazines and N-alkyl-N-(2-hydroxypropyl)hydrazones. As compared with derivatives of 2-(N-alkylhydrazino)ethanols, the position of the equilibrium in the investigated cases is shifted to favor the cyclic forms.See [1] for communication I.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 301–308, March, 1971.     

Ring-chain tautomerism of substituted hydrazones

The freshly distilled products of the reaction of acetaldehyde with 2-(N-propylhydrazino)- and 2-(N-isopropylhydrazino)ethanols have substituted perhydro-1,3,4-oxadiazine structures and are isomerized to the corresponding N-alkyl-N-(2-hydroxyethyl)hydrazones via an equilibrium. Mixtures of both tautomeric forms were isolated by the reaction of these hydrazino alcohols with acetone and pinacolone.See [1] for communication II.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1167–1170, September, 1971.     

Synthesis and oxidation of aromatic substituted 6,7-dihydropyrazolo[1,5-a]pyrimidines

Condensation of 5-amino-3-methylpyrazole with chalcone or dypnone gives aromatic substituted 6,7-dihydropyrazolo[1,5-a]pyrimidines which undergo air oxidation. An x-ray structure for 2-methyl-6-hydroxy-5,7-diphenyl-6,7-dihydropyrazolo[1,5-a]pyrimidine is reported.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 109–114, January, 1993.