SovietRxiv · Open Access in English
Rediscovering the Soviet scientific archive, in English
25456 full-text translations 14926 English PDFs 22540 abstracts
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This paper examines the Ursk group of polymetallic sulfide deposits in the Salair district, with particular attention to the newly explored “Lens 2” deposit and its significance for expanding local zinc and polymetallic ore resources in Western Siberia. Using field observations, borehole sections, s…
This study examines fossil microflora from twenty-three coal samples representing several seams of the Bukachacha deposit in Transbaikalia, using chemical maceration and microscopic comparison with pollen of modern conifers. The material contains abundant conifer pollen with paired air sacs, togethe…
This paper reports the examination of minute gold crystals recovered from sludge at the Berikul plant, whose morphology appeared inconsistent with the usual cubic habit of gold. Through microscopic observation and crystallographic description, the author identifies crystals and intergrowths dominate…
This paper tests spore analysis as a method for correlating coal seams in the Leninsky deposit of the Kuznetsk Basin, where conventional criteria such as seam thickness, lithology, and spacing were considered unreliable because of facies variability and faulting. The author describes the morphologic…
This work addresses the calculation of torsional vibrations and rotational nonuniformity in shafts of internal combustion engine installations, especially where classical flywheel methods assume an unrealistically rigid shaft. It develops a procedure for constructing theoretical torsiograms by harmo…
This paper proposes a generalized beam calculation method based on a theorem of three deflections and three moments. Starting from three arbitrary sections of a straight beam under arbitrary loading, it derives a relation connecting adjacent internal moments, span lengths, external loads or moments,…
This article examines forging hammers with valve distribution, focusing on operational adjustment, valve timing, pressure conditions during the ram stroke, and performance characteristics that had not been adequately treated in existing literature. Using experimental investigations of 3-ton and 6-to…
This paper examines laboratory indicators of the coking ability of caking bituminous coals, with particular attention to coal softening in the plastic state and the thermal stability of decomposition products formed during heating. It reviews existing caking and plastometric methods, then develops a…
This paper examines brown coals and sapropelites from the Sobolev deposit in the Chulym-Yenisei coal-bearing region, with attention to their geological occurrence, chemical composition, and suitability for fuel processing. Using borehole and adit samples, the study reports proximate and ultimate ana…
This paper describes the construction and testing of an approximate physical model of a Becker-system coke oven heating system, based on thermal and hydraulic observations from the Kuznetsk Metallurgical Plant. It develops the modeling rationale from mechanical similarity, emphasizing buoyancy, pres…
This paper examines methods for monitoring the effectiveness of coal-blending machines used in preparing coke charges, where incomplete mixing and later segregation can affect coke quality. It proposes analytical control based on comparing ash, volatile matter, plastic-layer thickness, or coal softn…
This study examines the distribution of sulfur forms in caking coals from the Zabituy and Golovinsky districts of the Irkutsk Basin, including samples from the Vladimir mine area. Using proximate and ultimate analysis, the Powell-Parr method for mineral sulfur, ash sulfur determination, and Eschka a…
This study examines how Osinovsky coal changes during oxidation and evaluates laboratory methods for estimating its tendency to self-oxidize and its technological behavior in coking. Using temperature-rise and critical-temperature tests, chemical oxidation with nitric acid and potassium permanganate…
This paper presents analytical data on brown coals from the Chernovskoye deposit near Chita, a deposit described as insufficiently studied despite significant estimated reserves and active mining. Based on 62 commercial samples from several mines tested in the Tomsk Railway laboratory, the authors r…
This study evaluates the bitumen content of selected Siberian brown coals to assess their potential as sources of mineral wax. Using exhaustive Soxhlet extraction with a 1:1 alcohol-benzene solvent and subsequent resin and wax determination by the Graefe method, samples from the Tomsk, Chulym-Yenise…
This study examines the acid solubility of four Siberian clay samples as a function of calcination temperature, calcination duration, and hydrochloric acid concentration. Air-dry samples were chemically characterized, calcined mainly for one hour at temperatures from 400 to 1000 °C, treated with hyd…
This paper describes a rich assemblage of Middle Devonian brachiopods from exposures and loose material near Lebedyanskoye village on the northern margin of the Kuzbass. Drawing on collections made by several geologists and by the author, it provides systematic descriptions, comparisons with Devonia…
This study examines the petrographic composition and caking capacity of coals from the Priyenisei-Abakan trough of the Minusinsk Coal Basin, with attention to their possible use as a coke base for regional metallurgy. Using macroscopic and microscopic petrographic analysis of samples from the Cherno…
This article examines the methodological difficulties of teaching technical thermodynamics in higher engineering education, especially the abstraction of key concepts and students’ limited prior familiarity with heat-engineering equipment. It argues for reorganizing the course around fundamental law…
This paper describes stromatoporoids and corals from Middle Devonian deposits near the village of Lebedyanskoye in the Anzhero-Sudzhensk district of the Kuznetsk Basin, using collections made chiefly by M. K. Korovin and supplemented by earlier material. Through study of specimens, polished surfaces…
This study examines the mineralogy, textures, structures, and genesis of the Irbinsky iron ore deposit in the Minusinsk region, a skarn-associated magnetite deposit of industrial importance. Using field material collected from surface workings, drill cores, shafts, and an adit, together with microsc…
This study provides a petrographic characterization of 23 coal samples from the Bukachacha deposit in Transbaikalia, drawn from several seams, mines, boreholes, and a prospecting pit. Using macroscopic observation, microscopy of identified constituents, and maceration-based spore analysis, the paper…
This study examines the petrographic composition of Seam VI in the Inner Prokopyevsk deposit of the Kuznetsk Basin as a basis for understanding observed variations in coal quality within a single seam. Using three seam samples, the work combines macroscopic seam-column description, microscopic petro…
This paper analyzes the kinematics and design conditions of the cutting apparatus in harvesting machines, focusing on the reciprocating knife, segment trajectories, stem bending, and risks of secondary cutting or slipping. It derives approximate equations for knife stroke, velocity, feed, and absolu…
This paper analyzes the motion of a body on an inclined plane subjected to longitudinal harmonic oscillations, a problem motivated by grain transport, cleaning, and sorting devices such as chute boards, screens, sieves, and stepped planes. Assuming crank-driven parallel motion with an infinitely lon…
This paper addresses the problem of estimating the final steady-state temperature of a heated body when an experiment cannot be continued until equilibrium is reached. Starting from the standard exponential heating law, the author derives an analytical relation between temperature excess and its rat…
The paper develops a method for estimating losses in transformers operating under repeated transient conditions, with particular attention to welding transformers. It derives approximate expressions for the transient magnetic flux and making current using a saturation-based magnetization relation, g…
This paper presents a graphical method for selecting and checking beam cross-sections under combined loading, with primary attention to oblique bending and to cases involving eccentric force, bending, and torsion. Starting from the standard stress formula in principal axes, it reformulates the probl…
This article examines selective assembly, or machining followed by sorting, as a way to improve the definiteness of fits in interchangeable production without requiring tighter machining tolerances. It develops formulas for dividing shaft and hole tolerance fields into a number of sorting groups und…
This paper examines the reliability of interference fits, understood as the probability that assembled shafts and holes will produce positive interference rather than clearance despite dimensional tolerances. It criticizes earlier calculations that assume a uniform distribution of manufactured dimen…
This paper addresses the graphical determination of flywheel size for machines with a connecting-rod crank mechanism, where varying tangential force creates alternating excess and deficiency of work during a shaft revolution. It proposes a vector flywheel diagram that combines the construction of th…
This article addresses the determination of chip thickness on the tooth of a cylindrical helical milling cutter and disputes a formula then repeated in technical literature that made thickness proportional to the sine of the helix angle. Using geometric and developed-surface reasoning, supplemented …
The paper addresses the preliminary sizing of retaining walls, a task usually handled by graphical analytical trial and error after assuming wall dimensions. It derives formulas for determining the required lower base width from known earth pressure, wall geometry, masonry weight, allowable stresses…
The paper derives practical formulas for determining the contact ratio of external involute gear meshes, with emphasis on a pressure angle of 20 degrees. It decomposes the total contact ratio into two partial contributions associated with the two gears, expresses these quantities in terms of tooth n…
The paper analyzes how to select the minimum tooth numbers in a three gear transmission with an intermediate wheel while avoiding tooth undercutting during simultaneous meshing. It derives limiting geometric conditions for three possible undercutting cases and formulates expressions for the minimum …
This paper develops and tests a theory for the power consumption and dynamic nonuniformity of face milling, a machining process for which the author argues that prior theoretical and experimental data were insufficient or unreliable. It derives cutting-force and work equations that account for chip …
The discussion of phenomena occurring at low temperatures, held at the Royal Society of London on May 30, 1935.
Discussion on phenomena occurring at low temperatures, held at the Royal Society of London on May 30, 1935
This issue is entirely devoted to the reports presented at the session of the Academy of Sciences of the USSR, held in Moscow from March 14 to 20 of this year.
