SovietRxiv · Open Access in English
Rediscovering the Soviet scientific archive, in English
25357 full-text translations 14926 English PDFs 22539 abstracts
Showing 50 of 25357 papers
This paper examines relationships among physical and mechanical properties of Jurassic semirocky rocks from deposits in the Kansk-Achinsk Basin, with attention to their relevance for engineering-geological assessment and quarry slope stability. Using correlation analysis, including correlation coeff…
The paper addresses how to choose a rational perforation density for the casing of an oil exploration well, using inflow formulas for hydrodynamically imperfect wells. It compares the geometric resistance associated with the zone of influence of individual openings and the plane-radial flow zone, pr…
This paper determines the effective permeability of the Yu-1 reservoir at the Pervomayskoye oil field using stabilized inflow tests from wells 260, 261, 262, and 264. It applies a steady-state inflow formula that incorporates oil properties, perforation density, channel geometry, incomplete perforat…
This paper describes the Kiev-Egan oil field, discovered in 1970 in the northeastern Kargasok District of Tomsk Oblast, and summarizes its tectonic position, stratigraphy, and early drilling results. Using seismic, gravity, aeromagnetic, core, logging, and formation testing data from three wells, th…
This paper characterizes the Luginetskoye gas-condensate and oil field in Tomsk Oblast, describing its structural position on the Pudin megaswell, productive Jurassic reservoir interval, fluid contacts, flow rates, pressures, and reservoir regime. It synthesizes seismic interpretation, well logging,…
This paper examines the gravitational field of the Upper Kondoma ore district in Mountain Shoria, where anomalies from a large granodiorite massif obscure smaller structural features. The authors apply field transformations, including averaging, residual anomaly calculation, gravity variations, and …
This study examines whether paleomagnetic and petrophysical properties can aid subdivision, correlation, and age assessment of Paleozoic basement deposits in the structurally complex Tomsk uplift. Measurements of density, magnetic susceptibility, natural remanent magnetization, remanence directions,…
This paper describes skarns and post-skarn metasomatites in the northern Saralinsk ore field of the Kuznetsk Alatau, where these bodies are spatially associated mainly with contacts of a younger granite-granodiorite intrusion. Using petrographic observations and spectral geochemical analyses, the st…
This paper examines exploration methods for coal deposits in the Tom-Usinsk district of the Kuzbass, where fields previously treated as simple monoclines were later shown by mining and supplementary exploration to have complicated tectonics. Using the V. I. Lenin mine field and the Tom-Usinsk 3-4 op…
This paper examines the tectonic structure of coal-bearing deposits in the Tom-Usa district of the Kuznetsk Basin, with particular attention to the Western Monocline, the main area of mining and exploration. Using mine and quarry documentation, field observations in underground workings, open pits, …
This paper examines ways to increase the rate and efficiency of driving underground mineral exploration workings, using experience from the Karamken and Northern geological exploration expeditions. It reviews drilling, blasting, loading, haulage, crew size, and cyclic scheduling, then applies a modi…
This paper examines the geological, tectonic, and petrographic conditions associated with coal seam formation in the Tataurovskoye and Chernovskoye brown-coal deposits of Central Transbaikalia. Using samples from mines, open cuts, and boreholes, the authors describe coal microcomponents and petrogen…
This paper examines the carbon isotopic composition of carbonate rocks and calcites from the Gorny Altai and the Batenevsky Ridge, considered as possible source materials for carbonate-bearing Mesozoic platform deposits of Western Siberia. On the basis of isotope measurements of limestones, marbles,…
This paper examines the heavy-mineral composition of terrigenous deposits of the Chingasan Series in the Uvolzhsky graben of the Yenisei Ridge, where stratigraphic correlation is complicated by strong facies variability and limited faunal evidence. On the basis of mineralogical analysis of heavy fra…
This paper applies statistical experimental design to the separation of isotopic ions by countercurrent electromigration in an ion exchanger, solution system. Using a half replicate of a four factor factorial design, the authors model the degree of separation and unit productivity as polynomial regr…
This paper reports experimental diagnostics of a shielded metallic RF torch plasmatron intended for plasma chemical applications. Gas temperature in air plasma, and in plasma containing air mixed with decomposition products of an organic dielectric, is determined over pressures of 100 to 760 mm Hg u…
This study examines how propanol additions affect the electrical conductivity of aqueous chloride salt solutions relevant to ion exchange processes under an applied electric field. The authors measured the conductivity of LiCl, NaCl, and KCl solutions at 25 degrees Celsius in water, propanol mixture…
This paper experimentally investigates energy distribution and electrophysical parameters of a medium-power high-frequency torch discharge at atmospheric pressure, using an industrial 20 to 25 MHz generator and a water-cooled copper plasmatron. From measurements of generator power, anode losses, hig…
This paper describes a simplified control unit for four-phase stepper motors intended for automation and telemechanics applications requiring reliable pulse distribution, wide-frequency operation, and reversible motion without loss of information. The proposed circuit uses standard “Logika” series l…
This paper examines the conditions under which a selsyn receiver in an indicator pair and a selsyn transformer can operate in parallel from a single transmitter without unacceptable disturbance of indicator readings. Using the two-reaction method together with experimentally measured equivalent para…
This paper addresses automatic recording of continuous spatial distribution curves for technological parameters, such as temperature or concentration, measured at discrete points by EMF sensors. It formulates sequential sensor polling as a time based linear interpolation problem and describes an ele…
A contactless method is examined for measuring the electrical conductivity of conducting liquids by placing the medium in a traveling magnetic field produced by a two-phase inductor. The paper develops an equivalent circuit for a cylindrical inductor with an external magnetic core, deriving expressi…
This paper analyzes the distribution of a traveling electromagnetic field in a cylindrical channel carrying a laminar conducting liquid, with no internal ferromagnetic core and a parabolic axial velocity profile. Starting from the vector-potential equation for the moving conducting medium, the autho…
This paper estimates plasma parameters of a high-frequency torch discharge in air at pressures from 400 to 760 mm Hg. Using stationary energy-balance equations for electrons and molecules, the authors derive a formula connecting the total discharge current and heat released per unit length with aver…
This paper develops a theoretical model for separating ions with similar properties, including isotopic ions, in an ion exchanger solution system subjected to a constant electric field while both the solution and granular ion exchanger phases are in motion. Treating the apparatus as a two conductor,…
This paper examines the mechanism of isotope separation in liquid ion exchanger, solution systems by relating isotope redistribution to differences in vibrational state sums, expressed through beta factors. The authors simplify the complex liquid ion exchanger molecule for frequency calculations, fo…
This study examines exchange sorption and ion-exchange kinetics of lithium, sodium, potassium, and magnesium ions on KU-2×8 cation exchanger in aqueous alcohol media. Equilibrium experiments and column kinetic measurements were used to determine exchange constants, swelling-dependent bead radii, and…
Microwave diagnostic methods are applied to determine the electron concentration and effective electron collision frequency in an air high-frequency torch discharge at reduced pressure. The study combines attenuation measurements at three microwave wavelengths with phase-shift measurement at one wav…
This study examines sampling conditions for mass-spectrometric analysis of gaseous products formed during decomposition of vinylidene fluoride polymer in a radio-frequency torch plasma. An experimental system combining a plasmatron, gas inlet, and MSKh-3A time-of-flight mass spectrometer was used at…
This paper examines constriction in low-pressure high-frequency air discharges, focusing on the radial distributions of electron concentration, effective electron temperature, and electric-field strength in a cylindrical quartz discharge chamber. Using two-probe measurements at different pressures a…
This paper examines the ion current collected by a finite length cylindrical probe in plasma for the case where the mean free path exceeds the probe radius and the usual infinite cylinder or limiting motion criteria may not apply. The probe is modeled as a prolate ellipsoid of revolution, and ion mo…
The paper models a shielded high-frequency torch discharge as a transmission line with distributed active resistance, capacitance, and inductance, motivated by the need to account for discharge parameters in matching industrial radio-frequency generators to plasmatrons. Using line equations under as…
This paper analyzes mechanisms responsible for the formation of plasma flow in a free high-frequency torch discharge, whose channel and envelope have markedly different dimensions and temperatures. It develops two approximate models: one based on electrodynamic compression and pressure gradients ass…
This paper evaluates the efficiency of electroplasma air heating in high-frequency torch-type plasmatrons, motivated by their potential use in plasmochemical processes and by doubts about their energy performance. Experiments with an LD4-10 generator at 37 to 40 MHz used calorimetric measurements an…
This study examines the determination of trace copper in zinc telluride by anodic polarographic methods, with particular attention to interference from tellurium in different supporting electrolytes and at different electrodes. The authors evaluate alkaline, tartaric acid, and succinic acid backgrou…
This paper examines the concentration of trace variable-valence metals for stripping polarography, focusing on cases where such metals cannot be reduced to zero valence on stationary electrodes under ordinary conditions. Using molybdenum as a model element, the authors study electrodeposition at con…
A procedure is described for determining trace tin in iron and iron-based alloys by amalgam polarography after separation of tin from the iron matrix. Tin is converted to tin tetrachloride and distilled from boiling hydrochloric acid solutions of ferric chloride in an argon atmosphere using a quartz…
The study examines the cathodic reduction of trivalent chromium at a dropping mercury electrode as a basis for selecting accumulation potentials in amalgam polarography with accumulation. Polarographic curves were recorded in several supporting electrolytes, including potassium thiocyanate, potassiu…
The paper addresses trace contamination in silicon dioxide films and in hydrofluoric acid and water used in integrated circuit processing, where impurities can affect semiconductor reliability. It develops an amalgam polarographic method for determining Zn, Cd, Pb, Sn, In, Tl, Cu, Sb, and Bi from a …
An apparatus is described for investigating how elevated pressure affects the concentration limits of flame propagation in gas mixtures, a problem relevant to combustion theory and safety engineering. The device consists of a mixer, combustion chamber, ignition system, pressure measurement and admis…
This paper examines the treatment of acidic industrial wastewater containing iron, copper, chromium, and other heavy metal ions, focusing on acceleration of metal hydroxide settling after reduction of hexavalent chromium and lime neutralization. Laboratory settling tests were conducted in 500 ml cyl…
This paper examines wastewater generated during ammonia and steam treatment of pencil slats at the Tomsk pencil factory, characterized by high ammonia content, strong color and odor, suspended solids, and a large organic load. Laboratory tests compared reagent treatments and found that slaked lime w…
This study examines whether high-voltage electrical pulsed discharges can destroy hydrophobic xanthate layers relevant to sulfide ore flotation. Copper, zinc, and lead xanthates were synthesized, treated in aqueous suspension using an Arkad'ev-Marx generator, and compared with untreated samples by X…
This paper investigates recovery of copper from spent ferric chloride etching solutions used in printed circuit production by cementation with iron filings, addressing both metal loss and wastewater pollution. Laboratory experiments measured copper removal and kinetic parameters while varying temper…
This study evaluates corrosion behavior of candidate electrode and structural materials for apparatuses that evaporate caustic soda solutions by direct alternating-current electric heating. Nickel, copper, brass, Kh18N10T steel, steel-3, electrode carbon, and fluoroplastic-4 were tested in 30% and 5…
This study examines the specific boundary resistance of carbon electrodes during the passage of alternating current through concentrated sodium hydroxide solutions under conditions relevant to direct electric heating in electrode evaporators. Measurements were made in a fluoroplastic cell with plane…
This paper addresses wastewater from aromatic sulfochloride production, where excess chlorosulfonic acid is converted into acidic effluents containing sulfuric acid, hydrochloric acid, and organic impurities. It compares lime neutralization with recovery by rectification and argues that a two column…
This paper examines methods for dewatering fine suspensions and colloidal solutions, especially materials with particles below 100 micrometers produced by wet grinding. It compares settling, centrifugation, and evaporation, arguing that settling and centrifugation remain too slow or insufficiently e…
This paper examines the use of direct electric heating for evaporating waste pickling solutions containing iron and copper chlorides, as an alternative to lime neutralization and disposal. Experiments in a parallel plate measuring cell with graphite electrodes determined limiting voltage drops, spec…
This study examines a column apparatus using a perforated spiral-shaped contact element intended to intensify gas, vapor, and liquid mass transfer in rectification and absorption processes. Laboratory tests were conducted on hydrodynamics with the water-air system and on rectification with the ethyl…
