SovietRxiv · Open Access in English
Rediscovering the Soviet scientific archive, in English
25456 full-text translations 14926 English PDFs 22540 abstracts
Showing 50 of 25456 papers
This paper examines the origin of anode overvoltage on carbon electrodes in molten electrolytes, focusing on the role of electrochemically active intermediate carbon and oxygen compounds. Using a carbon test tube anode with an internal carbon oxygen reference electrode, the study measures the potent…
This study examines the vapor-phase oxidation of styrene and alpha-methylstyrene by atmospheric oxygen over granulated tin vanadate, using a flow apparatus with short contact times and moist air. The authors identify and quantify principal products including benzoic acid, maleic anhydride, quinone, …
This study examines the formation of acetylene during incomplete combustion of methane in oxygen, a process relevant to oxidative pyrolysis of natural gas. Using a Bunsen-type burner, water-cooled microprobes, and fine thermocouples, the authors measured gas composition and temperature distributions…
This paper examines the motion of structural, or cohesive, mudflows whose fine clay and silt content gives them viscoelastic and viscoplastic properties distinct from ordinary water flows. Using experimental data from viscosity, suspension, and flume studies, it relates the ability of mudflow masses…
This paper develops projectively invariant moving frames for ruled surfaces contained in a fixed line congruence. Using Cartan exterior forms, it constructs two normalized frames, the K-frame and M-frame, related respectively to osculating complexes and median points, and derives their invariant dif…
This study investigates the kinetics of rupture growth in unfilled nitrile rubber vulcanizates in the high elastic state, focusing on the effects of notch size, deformation rate, stress, and cohesive energy. Rectangular specimens of SKN-18, SKN-26, and SKN-40 with controlled cuts were stretched at s…
This paper studies the Lie quadric associated with ruled surfaces belonging to a line congruence in projective space. Using Cartan’s method of exterior differential forms and first order adapted tetrahedra, it derives an invariant equation for the Lie quadric of an arbitrary ruled surface of the con…
This paper examines whether a hydrogen chloride flame can serve as a spectroscopic source for determining dissociation energies of metal chlorides, using the equilibrium reaction NaCl to Na plus Cl as a test case. Sodium chloride and sodium carbonate solutions were introduced into an H2 plus Cl2 fla…
This note studies linear extrapolation for discrete homogeneous random fields indexed by one spatial and one temporal integer variable. Using the spectral function of the field, it gives necessary and sufficient conditions for regularity and singularity, including logarithmic integrability criteria …
This paper investigates the catalytic phenylation of hydrogen-containing alkylchlorosilanes, especially methyl- and ethyldichlorosilanes, with benzene. Using sealed autoclave experiments, the authors compare several potential catalysts and identify boric acid as an effective and convenient catalyst,…
This study examines whether the phenyl nuclei in substituted diphenyl ketones remain coplanar in solution and in the crystalline state, a question relevant to the transmission of electronic effects through biphenyl systems. Infrared spectra of crystalline samples and dioxane solutions, supplemented …
The paper develops Prandtl’s proposed “second” form of ideal-fluid motion past sharp-edged streamlined bodies, in which separated flow is represented by vortex sheets and spiral surfaces of tangential velocity discontinuity. It decomposes such flows into a basic potential flow and an additional vort…
This paper studies one-sided and two-sided invertibility in abstract semigroups and applies these notions to semigroups of transformations. It establishes structural results relating products of invertible elements, cancellability, and the decomposition of a semigroup into classes of left, right, tw…
This note examines the relationship among sliding, vibrational, and time optimal modes in a class of relay servomechanisms and indirect control systems. By comparing differential equations and phase plane descriptions for systems with feedbacks and vibro-contours, the authors show that these modes s…
This paper examines the planetary distribution of magnetic and ionospheric disturbances and auroras in relation to Störmer’s theory of solar corpuscle precipitation. Using previously derived isochrone spirals of magnetic disturbance maxima, ionospheric absorption data, and reported diurnal variation…
This study examines the partial reaction of ethylene oxide with silicon tetrachloride and ethyltrichlorosilane, in contrast to earlier work that mainly reported fully substituted products. By controlling stoichiometry and adding liquid ethylene oxide to cooled chlorosilanes followed by distillation,…
The proposed review aims to acquaint the reader with the current state of the theory of the Vavilov–Cherenkov effect. The review is divided into two parts: the Vavilov–Cherenkov effect in an unbounded medium and the Vavilov–Cherenkov effect in the presence of boundaries. The author has not attempted…
This note studies vector systems of singular convolution-type integral equations on the real line and on paired half-lines, extending earlier work on scalar equations. Using Fourier transforms, matrix function theory, and Riemann boundary-value problems for systems of analytic functions, the equatio…
This note generalizes the classical separation properties of consecutive Chebyshev polynomials to a broader class of pairs of functions satisfying boundedness, alternation, and a Chebyshev-type restriction on zeros of their linear combinations. The author proves, by counting zeros of the auxiliary f…
This paper examines the thermodynamics of phosphorus removal from iron by molten slags, focusing on how slag composition affects the heat and entropy terms of the dephosphorization equilibrium. Using radioactive phosphorus to determine phosphorus distribution between iron and slag over 1560 to 1810 …
This study examines the polymerization and copolymerization behavior of 2-vinylpyridine and 2-vinylquinoline in order to assess how a nitrogen heteroatom and increased aromatic ring complexity affect vinyl monomer reactivity. The monomers were synthesized from picoline and quinaldine, characterized,…
This paper treats the classical plane strain problem of stress and strain distribution in an infinite plane acted on by a concentrated force, reformulated for elastic-plastic deformation. Assuming material incompressibility and a linear hardening law in the plastic region, the author derives stress …
This paper investigates organic derivatives of selenious and tellurous acids as analytical reagents, focusing on compounds containing seleninic and tellurinic acid groups and comparing their behavior with earlier claims about related sulfinic and seleninic acids. The authors synthesized and examined…
This note studies continuous mappings from an open subset of the product of an arbitrary topological space with a Euclidean space into a Euclidean space, focusing on the behavior of the fiber maps under variation of the topological parameter. Using topological degree and local degree, it proves stab…
This paper examines how complex-forming additives influence the microstructure of polybutadiene obtained by polymerizing divinyl with butyllithium in petroleum ether. Experiments at 50 degrees show that small amounts of oxygen, as well as alcohol or phenol derivatives formed as lithium alkoxides or …
This study examines the dipole moments of dimethine merocyanine dyes derived from 3-ethylrhodanine and containing various nitrogenous heterocyclic residues. The authors measured dipole moments in benzene at 25 degrees by the heterodyne method, including several related precursor and betaine compound…
The paper develops an approximate method for plane problems in the theory of small elastoplastic deformations by expanding stresses, displacements, and strains in a parameter about an axisymmetric zeroth-order state, with incompressibility and a power-law relation between stress and strain intensiti…
The paper examines the measurement of infrared absorption spectra when the radiation source is colder than the receiver, producing a negative radiation flux. It combines thermodynamic and radiometric analysis with experiments on nitrobenzene and toluene using an infrared spectrophotometer, comparing…
This paper examines the two-stage mechanism of the Arbuzov rearrangement by attempting to isolate intermediate products from aliphatic phosphorus compounds, which had generally been considered too unstable for direct preparation. Esters of dialkylphosphinous acids were reacted with alkyl iodides und…
This paper studies how rearrangements of the trigonometric system affect convergence, summability, and basis properties of Fourier series. It gives sufficient conditions, formulated through best approximation in the L2 metric and through an integral smoothness condition, under which a Fourier series…
This paper examines how bottom-mounted pressure wave recorders distort measurements of wind-wave profiles, especially for steep, peaked waves whose surface form contains higher Fourier harmonics. Using a kinematic model of wind-wave profiles and harmonic analysis of calculated wave forms, it compare…
This paper reports measurements of cross sections for cadmium isotope reactions Cd(n,p)Ag induced by 14 MeV neutrons. Cadmium nitrate samples were irradiated, palladium and silver activities were chemically separated, and decay curves and beta absorption measurements were used to identify Ag-106, Ag…
This study examines how preliminary neutron irradiation affects the stability of austenite and the subsequent martensitic transformation in several carbon steels and carbon-free iron, nickel, manganese alloys. Specimens were irradiated in a heavy-water reactor for 100 or 200 hours, then analyzed by …
This study investigates physical adsorption of carbon dioxide on silica gels over a broad temperature and pressure range, from minus 85 to 40 degrees Celsius and up to 85 atm, in order to test adsorption theory under conditions including the critical region. Using volumetric measurements, fugacity c…
This paper studies global stability of a class of nonlinear differential equations arising in indirect automatic control with one regulating element. It reformulates Lur’e’s Lyapunov method in invariant matrix form for systems with a stable open-loop matrix, using a quadratic Lyapunov function plus …
This paper reports measurements of the saturated vapor pressure of solid bismuth, a quantity needed for thermodynamic calculations relevant to possible use of bismuth as a heat-transfer medium. The authors used an isotopic-exchange method with radioactive bismuth-210, exposing paired bismuth-coated …
This paper studies infinitesimal bendings of surfaces and their relation to momentless stress states in thin shells, with emphasis on boundary constraints that are compatible with such bendings and have well-posedness properties. It formulates the correspondence between bending fields and momentless…
This article is devoted to an analysis of the physical content of the problem of measuring the pressure and density of the upper layers of the atmosphere when using a satellite for measurement purposes. The instrument for measuring pressure and density is hereinafter understood to be a “manometer” o…
The paper introduces a comparison principle for linear operators in a Hilbert space based on the condition that their images form an acute angle, and derives consequences for defect indices, normal solvability, and approximation schemes. It proves convergence results for projection methods and for a…
This paper calculates adsorption bond energies for selected hydrocarbons on graphite and relates them to chromatographic separation behavior. Using an additive molecular-unit model with dispersion interactions evaluated from the Kirkwood formula, the authors estimate adsorption energies for n-alkane…
This paper investigates the radiochemical detection of the reaction Si-30(p, pi+)Si-31 during irradiation of silicon with protons of 120 to 660 MeV. Silicon targets were irradiated in a synchrocyclotron beam, chemically separated, and assayed through the decay and beta absorption characteristics of …
This paper reports a beta spectrometric study of positron emission from holmium 160 produced in proton irradiated tantalum and chemically separated from holmium and erbium fractions. Using a triple focusing beta spectrometer, the authors measured conversion electron lines attributed mainly to holmiu…
This paper investigates the mean energy required to form an electron, hole pair in germanium crystals under ionization by fast electrons, a quantity relevant to semiconductor radiation detectors and direct conversion devices. Using n-type germanium crystals with p-n junctions, the authors measured t…
This note studies a class of entire functions arising as kernels in integral representations connected with the Cauchy problem for second order ordinary linear differential operators. Starting from a generalized power series related to the function \(U_0^{(1)}\), the paper derives the third order di…
This paper addresses the normalization of X-ray, electron, and neutron scattering intensity curves used to derive radial distribution functions for gases, liquids, amorphous bodies, and mixed crystalline-amorphous systems. Instead of relying on the high-angle damping condition, which is vulnerable t…
The paper studies linear transformations of relativistically invariant wave equations for particles of arbitrary and higher spin, focusing on transformations that preserve the essential structure of the Lorentz generators, reflection operator, dynamical matrices, and metric form. It argues that admi…
This study examines how the initial charge density of RDX affects its explosive decomposition, challenging the assumption that its heat of explosion is a fixed material constant. Using dried RDX charges of varying density detonated in a steel calorimetric bomb, the authors measured heats of explosio…
This paper revisits the oscillator strength sum theorem for alkali-metal atoms, motivated by discrepancies between Fock’s earlier correction formula and newer dispersion measurements for sodium. It argues that the usual dipole transition perturbation is incomplete because the polarized ionic core mo…
The paper studies when Fredholm theory extends from a nested family of Banach spaces to associated complete linear topological spaces formed as intersections, together with their conjugate spaces. It defines the relevant topologies, analyzes operators whose action is independent of the Banach parame…
