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 the design calculation of simple hinged deflectors used in directional geological-exploration drilling, distinguishing tools for gradual borehole inclination control from those intended to create local sharp curvature or initiate sidetracks. It develops geometric relations for de…
This paper addresses the selection of principal operating and design parameters for vibration-rotary drilling installations used in exploratory core drilling. Drawing on experimental and published studies of annular-bottom vibration-rotary drilling, it discusses the interdependence of vibrator excit…
This paper examines how the insertion angle of hard-alloy cutters affects bit durability and drilling performance in vibration-rotary drilling. It argues that maximum cutter life should occur when the cutter insertion angle corresponds to the average angle at which the cutter penetrates the borehole…
This paper proposes several inclinometer designs intended for surveying boreholes in ferromagnetic rocks or steel-cased holes, where conventional magnetic instruments are slow, unreliable, or insufficiently accurate. The authors describe a measurement principle based on continuous recording of depth…
This paper examines whether the moment a drill bit passes from one medium into another, such as entering a coal seam, can be inferred from elastic vibrations transmitted through the drilling tool. Laboratory experiments on a ZIF-650A drilling rig recorded vibration frequency spectra under idle opera…
This paper examines the subsidence behavior of loess deposits in the Tomsk Ob region and its implications for planning large-panel building construction, which is especially sensitive to uneven settlement. Based on engineering-geological observations and tests of relative subsidence under wetting at…
This paper examines why rocks in topographic depressions of the Kuzbass coal basin show consistently higher groundwater yields than comparable rocks on watersheds and elevated areas. Drawing on borehole yield data, mine inflow observations, drilling fluid samples, and lithological comparisons, the a…
This paper examines electrophilic substitution and acid-induced cleavage reactions of triferrocenylphosphine oxide, a compound obtained in high yield by direct phosphorylation of ferrocene. Sulfonation in concentrated sulfuric acid with acetic anhydride gives tris-(1-sulfoferrocenylene-1′)-phosphine…
This paper characterizes groundwater conditions in the southeastern part of Tomsk Oblast, where the West Siberian artesian basin meets the Paleozoic Sayan and Altai folded region. Using geostructural hydrogeological regionalization and compiled drilling, spring, lithological, hydraulic, and chemical…
This paper develops an engineering-geological classification of Upper and Middle Quaternary deposits in the Tomsk area in response to the inadequacy of general Soviet foundation design norms for local construction conditions. Using earlier investigation materials, natural exposures, special borehole…
This paper summarizes hydrogeological conditions in the Kuznetsk coal basin, an intermontane artesian basin of major industrial importance in Kuzbass. Using geological and hydrogeochemical investigations, it distinguishes five aquifer complexes grouped into three structural stages and describes thei…
This paper examines the geology, hydrogeology, and engineering-geological significance of unconsolidated deposits in the Kemerovo area of the Kuznetsk Basin, with particular attention to loess-like cover rocks used as foundations for construction. Drawing on field investigations, published sources, …
This paper examines the engineering geological properties and collapsibility of Quaternary loess-like deposits in the Kemerovo and Belovo districts of Kuzbass, where such soils commonly form foundations for industrial and civil structures. Drawing on field observations, laboratory grain-size and min…
This paper addresses methodological difficulties in tectonostructural analysis of mine fields where medium and small faults are known only from sparse exploration-line intersections and where geological sections may show only apparent seam displacement. It argues that sections perpendicular to a fau…
This article proposes the use of multilateral wells to refine interpretations of deep tectonic structures in oil and gas prospecting, where shallow structural drilling and seismic data may not reliably represent deeper horizons. It argues that several laterals from a single main borehole can provide…
This paper reexamines the tectonic structure of the Tsentralnaya mine field in the Kemerovo district of Kuzbass using accumulated mine-geological, exploration, and structural-observation data from deeper workings. It describes the western limb of the Kemerovo syncline as complicated by second-order …
This study examines small tectonic forms in the structurally complex southern part of the Yagunovskaya mine field in the Kuzbass, using observations from mine workings, stoping areas, and mass fracture measurements in several coal seams. It describes the relation of subsidiary folds, the major diago…
This paper addresses the study of rock fracturing in exploratory well cores, with particular attention to the use of unoriented core in Kuzbass coal-bearing deposits. It describes a measurement and processing methodology based on conditional fracture azimuths relative to bedding, stereographic diagr…
This paper examines how coal reserves should be accounted for in the flanks of tectonic faults in Kuzbass mine fields, where exploration estimates may overstate workable reserves. Drawing on studies from the Prokopyevsk, Kiselevsk, Anzhero-Sudzhensk, and Kemerovo districts, it relates unmined seam s…
This paper describes a small assemblage of pelecypods from the Solovikhinsky Limestone of northern Gorny Altai, a key Gedinnian unit at the base of the Devonian in Siberia. Based on twenty specimens collected by N. P. Kulkov, Khalfin identifies and describes three notable forms: Conocardium ornatiss…
This article examines disputed problems in the Cambrian stratigraphy of the Western Sayan, especially the extent, age, and correlation of the Lower Monok, Upper Monok, and Babakov suites. Sivov reviews earlier stratigraphic schemes and compares field relations, unconformities, lithologic successions…
This paper reassesses the geomorphology and Quaternary stratigraphy of the Tom River valley in the Tomsk urban area, reviewing earlier terrace schemes and arguing that classifications based mainly on surface morphology or soil cover are insufficient. Using terrace morphology, socle elevations, litho…
This paper describes a new genus and species of Late Paleozoic plant, Borovuchkia kemeroviana, based on leaf impressions from the Borovushinsky area of the Kemerovo District in the Kuznetsk Basin. The study uses external morphology, venation, and epidermal anatomy to characterize pinnate or possibly…
This paper describes newly identified fossil woods from the Permian Kolchugino Series of the Kuznetsk Basin, based on petrified specimens collected from several boreholes and localities. Using anatomical observations in transverse, tangential, and radial sections, it establishes and diagnoses severa…
This paper describes the anatomical structure of the articulated-stem plant Annulina neuburgiana, a species assigned to a genus considered morphologically intermediate between Phyllotheca and Annularia. Based on fossil material from the Kemerovo locality in the Kuznetsk Basin, it provides a diagnosi…
This paper reexamines the Cambrian stratigraphy of the Mount Koshkulak area on the right bank of the Bely Iyus River, where earlier investigators proposed conflicting correlations and age assignments for carbonate, terrigenous, and volcanogenic sequences. On the basis of fieldwork in 1960 to 1961, l…
This paper reports the discovery of a trilobite assigned to Fordaspis cf. nana in the basal red-colored member of the Torgashino Limestone of the Eastern Sayan, a region whose Cambrian faunas are noted for strong endemism and difficult interregional correlation. The author describes a well-preserved…
This paper assesses the Mesozoic oil and gas potential of the northeastern West Siberian Lowland, from the Turukhan basin to the Tanama area, using recent drilling, seismic, core, and hydrogeochemical data. It describes Jurassic and Cretaceous depositional environments, regional basement subsidence,…
This study examines low-toxicity organophosphorus compounds whose biological activity is not primarily attributable to cholinesterase inhibition. New phosphacyclopentane derivatives were synthesized from 1-oxo-1-bromo-3-methylphosphacyclopentane and evaluated in mice by toxicity, duration of lateral…
This paper generalizes a theorem of Mycielski and Paszkowski on interpolation polynomials with unfixed nodes, replacing algebraic polynomials by generalized polynomials generated by systems of functions satisfying Chebyshev-type zero-counting conditions. For prescribed positive interpolation values …
This study examines how the molecular weight of homologous hydrocarbons affects their diffusion in polymers over a range extending from small molecules to low molecular weight polyethylene fractions. Using an interferometric micromethod, the authors measured interdiffusion coefficients for hydrocarb…
The paper derives the probability distribution of an internal coordinate of a polyatomic molecule in a vibrational stationary state under the harmonic approximation, a quantity needed in transition configuration theory and theoretical electron diffraction. Since an internal coordinate is expressed a…
This study investigates the velocity structure of the upper mantle using intermediate-depth earthquakes from the Pamir-Hindu Kush epicentral zone, recorded by a 3500 km profile of temporary and permanent seismic stations. Earthquake locations and focal depths were determined with methods designed to…
The paper reports a method for converting highly condensed hydrolysis lignin, particularly from cottonseed hull processing, into quinone nitropolycarboxylic acids intended as plant growth stimulators. The authors use stepwise oxidation and hydrolysis with nitric acid in aqueous medium at 100°C, foll…
This paper examines how crystallization in linear polyconjugated polymers may disrupt coplanarity of macromolecular segments and thereby weaken conjugation. Comparing polyazines and poly-Schiff bases with differing X-ray crystallinity, the authors relate amorphous structure to stronger manifestation…
This study examines reactions between ethylene molecules and long-lived, highly excited hydrogen atoms produced by electron impact dissociation of ethylene. Using a two-chamber mass-spectrometric ion source, the work analyzes how ion intensities depend on ethylene pressure and electron energy, disti…
A rigid-plastic theory is formulated for shallow orthotropic shells to estimate load-carrying capacity and to identify rational, minimum-weight forms. Using standard shallow-shell equilibrium and kinematic relations together with an anisotropic yield condition and associated flow law, the paper deri…
The paper develops a framework for describing extraction in quaternary and higher component systems, where distributed substances influence one another and the Nernst distribution coefficient alone is insufficient. It introduces salting-out coefficients as ratios of distribution coefficients in syst…
This note studies the validity of the averaging method for analytic slow-fast systems with two angular variables when the evolving frequencies pass through resonances. Arnold shows by examples that naive averaging can give wrong results and that, even under suitable hypotheses, the discrepancy betwe…
This study examines how the thickness of polymer films affects the formation of supramolecular crystalline structures during crystallization from melts. Wedge-shaped films confined between glass surfaces were prepared to provide thicknesses from about 1 to 30 to 40 microns, and structures in gutta-p…
This paper examines the structure of the product formed by the reaction of ethanolamine with trialkyl phosphites, addressing disagreement with a previously proposed open-chain formulation. The authors combine stoichiometric observations, molecular weight and elemental analysis, qualitative chemical …
This paper formulates a general extremal problem for compact classes of analytic functions and weakly differentiable systems of functionals, with the aim of describing the boundary of the corresponding value set. For classes whose elements admit a representation as sums of Stieltjes integrals, the a…
This study examines the high-temperature decomposition of ethylene containing small additions of radiocarbon-labeled acetylene at 800 to 1000°C and 100 mm Hg, focusing on the role of acetylene in product formation. Using a flow vacuum reactor with complete mixing, chromatographic separation, and rad…
This paper examines nucleophilic substitution reactions of chloromethylcyclopentadienylmanganese tricarbonyl with sodium acetate, potassium phthalimide, and urotropine. The authors prepare and characterize acetoxymethyl, oxymethyl, phthalimidomethyl, aminomethyl, and formyl derivatives, including ac…
This note studies Fourier expansions with respect to orthonormal systems of uniformly bounded functions, addressing whether such systems can provide everywhere or uniformly convergent expansions for all continuous functions. Extending the classical Du Bois-Reymond theorem, it proves that for any uni…
The paper studies representation of entire functions by Dirichlet series with complex exponents determined by the zeros of an auxiliary entire function of finite order. It establishes absolute and locally uniform expansions for entire functions of order less than \(\rho/(\rho-1)\), gives remainder e…
This article describes explosive magnetic cumulation generators that convert mechanical energy from high explosives into ultrastrong magnetic fields and currents through rapid deformation of conducting circuits. It outlines two principal designs: MK-1, which compresses an axial magnetic field in a m…
This study examines catalytic systems formed from pi-cyclopentadienyl nickel complexes and Lewis acids for the stereospecific polymerization of butadiene. Bis-pi-cyclopentadienylnickel and pi-cyclopentadienyl-pi-cyclopentenylnickel were combined with metal halides, and polymer yields, microstructure…
The paper proposes using the Mössbauer effect as an analyzer in tracer-atom studies, with Mössbauer isotopes such as iron-57 introduced in defined chemical states and monitored through recoil-free gamma-resonance spectra. This approach is presented as a way to study isotopic and electron-exchange re…
