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 spontaneous changes in viscosity observed in aqueous salvarsan solutions and evaluates whether they arise from colloidal association or from changes in molecular weight within a polymeric compound. The authors compare salvarsan prepared by the Ehrlich and Kober methods, follo…
This paper examines the role of hydrogenation in the corrosion fatigue of steel, especially under high cyclic stress amplitudes where failure occurs before substantial general corrosion can develop. Building on adsorption and electrochemical interpretations of corrosion fatigue, it argues that hydro…
This study examines the vapor phase synthesis of nitriles from ethyl and isoamyl alcohols with ammonia over an alumina molybdenum oxide catalyst containing 10 percent molybdenum trioxide. Experiments measured product formation as a function of temperature at fixed alcohol space velocity, followed by…
This paper studies boundary traces of functions on a smooth bounded planar domain whose generalized derivatives of order k have a finite weighted Dirichlet integral, with a weight comparable to the distance from the boundary raised by a parameter 0 ≤ alpha < 1. It establishes necessary and sufficien…
The paper studies the motion of a rigid body about a fixed point in a central Newtonian force field, assuming the fixed point is far from the attracting center relative to the body’s dimensions. It derives approximate equations of motion in principal axes and identifies first integrals, showing that…
This study examines Group VIII metal catalysts for the heterogeneous catalytic addition of ethyldichlorosilane to allyl chloride, a reaction yielding an organosilicon compound with chlorine in the gamma position to silicon. Under standardized autoclave conditions, platinum catalysts on carbon, silic…
This study examines the kinetics and mechanism of ion exchange on aluminosilicate catalysts under dynamic flow conditions in alkaline and neutral media. Industrial and laboratory aluminosilicates with different compositions and heat treatments were contacted for short times with LiOH, NaOH, and KOH …
This study examines the liquid-phase photochlorination of ethyltrichlorosilane with gaseous chlorine under incandescent illumination and compares its behavior with previously reported chlorination methods. Reaction mixtures obtained at varying chlorine-to-substrate ratios were fractionated by rectif…
Chernikov derives a relativistic expression for the collision probability of a particle moving through an inhomogeneous medium whose particles have arbitrary velocities, assuming binary collisions and neglecting external forces during the interaction. The argument treats particle motion as world lin…
Report at the meeting of the Special Committee for the International Geophysical Year in September 1954 in Rome.
This paper examines consequences of a proposed twofold structure of kaons and hyperons, in which weak interactions produce only a very small mass splitting between two lambda states. The authors argue that an external electromagnetic field could induce transitions between these states through an eff…
This paper investigates the synthesis and dehydration behavior of unsaturated organosilicon alcohols in which the hydroxyl group is positioned so as to avoid the beta-cleavage often observed in related silicon-containing alcohols. The authors prepare cyclic and acyclic silicon-containing alcohols th…
This paper reports a study of long-lived radioactive rare earth isotopes produced by deep spallation of tantalum irradiated with 680 MeV protons in a synchrocyclotron. The authors isolated rare earth fractions chromatographically and identified activities through half-life measurements, radiation ty…
The paper develops a Hilbert space framework for describing degeneration when a sequence of self-adjoint operators with discrete spectra converges strongly to an operator with continuous spectrum. It constructs limiting spaces associated with spectral points, proves that the limiting action of the o…
This paper examines the kinetics and mechanism of ammonia-induced symmetrization of organomercury salts, using ethyl and menthyl esters of alpha-bromomercuriphenylacetic acid as examples of electrophilic substitution at a saturated carbon atom. Reaction progress was followed mainly by nephelometric …
This study examines the catalytic dehydrogenation of cyclopentene to cyclopentadiene under reduced pressure, motivated by earlier reports of low conversion or substantial side reactions. Cyclopentene was passed in a flow system over an alumina, chromia, potassium oxide catalyst at 500 to 650 °C and …
In this review article, we consider the formal description of electron polarization, various methods of producing and detecting it, as well as experiments with polarized electrons. Issues of greatest interest to modern physics will be discussed in particular detail. An earlier review of this subject…
This paper reports spectroscopic measurements of the fine structure of the tritium Balmer alpha line at 6560 Å, using a cooled tritium discharge source, Fabry, Perot etalons, and photographic intensity analysis. The observed line separates into three resolved complexes whose spacings disagree with u…
The paper studies the Cauchy problem on the real line for equations of the form in which the time derivative of a differential polynomial operator applied to the unknown is equal to another differential polynomial operator applied to it. Using the theory of generalized functions and Fourier transfor…
This note studies the completeness of eigen and associated elements for a class of non-self-adjoint operator pencils that perturb a compact normal operator by bounded and completely continuous terms. Extending methods of Keldysh, it proves that under conditions on the finite order compact normal ope…
This paper studies the trace of the difference of two singular Sturm-Liouville operators on the half-line, a setting in which each operator has continuous spectrum and finitely many negative eigenvalues. Using spectral functions, scattering phase asymptotics, and a relation between the phase and the…
This paper develops a method for deriving time correlation equations in classical many-particle systems without assuming a Markov random process. Using Bogolyubov’s chain of linked distribution functions, it introduces conditional correlation functions and formulates a hierarchy of equations with we…
This paper calculates the electrical conductivity of a nondegenerate semiconductor with a high concentration of charged impurities in a regime where the usual kinetic equation and Conwell-Weisskopf approach may fail. Using the Kubo-Tomita-Nakano relaxation-function method, the author derives conduct…
This paper studies the first boundary-value problem for a degenerate nonlinear parabolic equation arising in one-dimensional nonstationary filtration, \(u_t=(\varphi(u))_{xx}\), with nonnegative initial and boundary data. A generalized solution is defined through an integral identity, and existence …
This study examines how the absorption spectra of vapors of selected aromatic organic compounds depend on concentration, with particular attention to the role of intermolecular interactions. Using absorption measurements over wide vapor pressure ranges, including long optical paths in a multiple-pas…
This paper proposes a numerical method for forecasting large-scale atmospheric wind fields and associated meteorological elements without replacing the actual wind entirely by the geostrophic wind. Using a small-parameter approximation, it derives equations for the ageostrophic wind components and v…
The study investigates the internal conversion electron spectrum associated with the decay chain Er-160 to Ho-160 to Dy-160, using a double focusing spectrometer with relative line half widths of 0.5 percent and, for many measurements, 0.3 percent. The measurements show that the observed conversion …
The paper develops a modal theory for wave propagation in smooth irregular waveguides, extending a previous method to cases where the field in each transverse section does not satisfy the same boundary condition as in the corresponding regular waveguide. For a symmetric electric wave in a circular w…
This paper studies accelerations of arbitrary order for a rigid body in plane-parallel motion, using Somov’s generalized formulas in matrix form and recurrence relations for the coefficients governing rotational motion. It defines reduced accelerations of order n and establishes several geometric pr…
This study examines substitution of chlorine attached to silicon by alkoxy groups in dichloromethyldimethylchlorosilane and bis(chloromethyl)methylchlorosilane, compounds in which chlorinated alpha substituents might be expected to increase lability of the silicon carbon bond. The authors reacted th…
This paper studies the completeness in L2 of eigenfunctions and associated functions for Dirichlet problems generated by strongly elliptic systems of differential equations with matrix coefficients and a small skew term depending on a parameter. The argument reduces the differential problem to opera…
Paramagnetic resonance measurements were carried out on frozen glassy borax melts containing ferric iron, comparing a sample enriched in Fe57 with an analogous unenriched sample at 77 K and radio frequencies of 115, 240, and 430 MHz. The resonance behavior of Fe3+ in the glassy matrix is interpreted…
This study examines isotope effects on ultrasonic velocity, density, adiabatic compressibility, and association in several alcohols deuterated at the hydroxyl group, as well as in heavy water. Measurements over approximately 10 to 80 degrees Celsius, together with cryoscopic determinations in benzen…
The paper examines the thermodynamics of the reversible hydrochlorination of propylene to isopropyl chloride, for which direct equilibrium and heat measurements were previously unavailable. Equilibrium constants were measured in a static pressure apparatus over orthophosphoric acid catalyst at 100 t…
This paper examines deviations from the Stefan, Reynolds description of liquid flow in very narrow gaps between approaching or separating plane parallel disks. Using a method that measures disk separation time and gap thickness down to submicron scales, it studies mineral oils, fatty acid solutions,…
This note refines earlier results relating the variation of a set in Euclidean space to metric properties of its complement, using notions of variations of different orders and entropy or metric dimension of projections. It proves lemmas showing that, when a set of dimension parameter p approximates…
This paper examines nucleophilic reactions of perfluoroallyl chloride with sodium methoxide and diethylamine, motivated by the possible conjugation of the allylic carbon chlorine bond with the double bond in chlorofluoroolefins. The authors show that methoxide substitution gives perfluoroallyl methy…
This paper formulates a generalized stochastic motion problem for a particle in a way that does not single out coordinate time and is therefore better suited to relativity and gravitation. The particle state is treated as a point of a finite-dimensional manifold containing space-time position and ve…
This issue publishes a translation of the philosophical article by the distinguished physicist Max Born, “Physical Reality.” This article deserves close attention, for it discusses one of the most acute epistemological problems in modern physics—the problem of physical reality—and does so from a pos…
The paper develops a line-geometric analogue of triorthogonal systems of surfaces, building on Lie’s and Klein’s correspondence between line geometry and conformal geometry. Using a canonical moving tetrahedron and exterior differential equations, it studies complexes of lines that decompose into on…
This paper extends a theory of steady currents in a shallow sea to allow the vertical exchange coefficient to vary with horizontal position, depth, wind speed, and the vertical coordinate. Starting from steady momentum equations with wind stress at the surface and no slip at the bottom, it derives e…
This paper investigates transformations of gamma-substituted pyridinium salts, especially the behavior of alkoxy, phenoxy, and methylmercapto groups toward aromatic and aliphatic amines. The authors show that unstable dianil salts of beta-alkoxy and beta-phenoxy glutaconic aldehydes readily cyclize …
The paper develops kinetic equations for particles in a liquid that interact through prescribed pair potentials while their coupling to the solvent is represented as a Markov diffusion process. Using Bogolyubov’s hierarchy of reduced distribution functions, it derives an infinite system of equations…
This paper studies uniform convergence of Fourier expansions in eigenfunctions of the Helmholtz equation on arbitrary odd-dimensional domains, under homogeneous boundary conditions of the first, second, or third type and summation by increasing eigenvalues. It proves that convergence to the expanded…
