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 how the cubic ionic crystal structure of alkali metal halides affects the channeling and energy loss of fast protons. It calculates averaged atomic row and plane potentials, using screened interaction models, and derives limiting channeling angles for proton motion along principa…
This paper examines changes in sodium, calcium silicate glass properties under proton irradiation as indicators of radiation resistance. Samples were irradiated in air at room temperature with approximately 4.5 MeV protons, and changes in stored energy, microhardness, optical absorption, electrical …
This paper investigates radiation damage and its annealing in lithium fluoride crystals irradiated with gamma rays from a Co-60 source, using measurements of stored energy, optical absorption, microhardness, electrical conductivity, and dielectric losses. The results relate changes in these properti…
This study examines how strontium chloride impurities affect radiation-induced dielectric losses in KCl-KBr solid solution single crystals, especially compositions rich in KBr, after proton irradiation. Crystals with varying SrCl2 concentrations were grown from the melt, chemically analyzed, irradia…
This study examines how divalent metal impurities affect the radiation-induced destruction of M-centers in alkali-halide crystals. NaCl and KCl crystals doped with CaCl2, SrCl2, or PbCl2 at varying concentrations were grown from the melt, irradiated with protons, and analyzed by optical absorption m…
This paper examines how divalent cation and anion substitutional impurities affect the initial formation of F-centers in x-ray irradiated KCl single crystals. Using kinetic measurements of F-center accumulation, electrical-conductivity data, and least-squares fitting to Mitchell’s equation, the auth…
This study examines how anion-substituting impurities affect the magnitude and kinetics of stored-energy accumulation in NaCl crystals exposed to 4.5 MeV proton irradiation. Stored energy was measured by dissolution calorimetry in nominally pure NaCl and in crystals doped with sulfur or hydroxyl imp…
This paper investigates the accumulation and release of stored energy in proton-irradiated alkali-halide crystals over a broad dose range, with attention to irradiation conditions, crystal treatment, impurities, and annealing behavior. Using calorimetric dissolution measurements, optical absorption,…
This paper develops physical and energetic principles for using radiation as a technological treatment of solids with predominantly ionic bonding, especially alkali halide crystals. It relates irradiation effects such as excitation, ionization, vacancy formation, color centers, radiolysis, dimension…
This paper extends an operational calculus based on generalized functions to ordinary differential equations with variable as well as constant coefficients. Working in the space of generalized functions supported on the nonnegative half-axis, it represents the Cauchy problem by an operator equation …
This paper addresses numerical evaluation of Fourier transform integrals arising in the analysis of low pass radio engineering filters, especially the response of a Butterworth filter to a rectangular pulse of finite duration. It proposes replacing more cumbersome mechanical quadrature by graphicall…
This paper examines the error introduced when an experimental impulse response is determined using a rectangular pulse of finite duration rather than an ideal delta impulse. Using Duhamel’s integral, it shows that the measured response is a local average of the true impulse response and derives an a…
This paper examines the use of piecewise linear interpolation in discrete systems for recording distributed technological parameters. It derives the standard interpolation error for uniformly spaced sensors in terms of the maximum second derivative of the measured function, giving a formula for sele…
This paper applies trigonometric interpolation to discrete measurement of stationary processes and homogeneous random fields when samples are affected by measurement error. Using the known correlation function, it derives an upper bound for the mean square of a structural variation quantity and rela…
This paper examines the use of trigonometric interpolation for reconstructing a continuous distributed parameter from discrete measurements taken at uniformly spaced points. It formulates the interpolation polynomial through Fourier Lagrange coefficients and analyzes two components of approximation …
This paper describes the use of the EMU-10 analog modeling machine to generate projection oscillograms of spatial curves and surfaces on an oscilloscope screen. It derives coordinate transformation equations relating a point in three-dimensional space to its planar projection, with adjustable viewin…
This paper addresses the simulation on analog computers of integrals whose limits vary with time, a problem arising in control systems whose objects are not conveniently described by differential equations, such as synchrotron particle acceleration models. Using the differentiation formula for an in…
This paper examines the use of analog computers for solving transcendental equations and applying such models to the synthesis and kinematic modeling of planar mechanisms. It formulates root-selection models for single equations and systems, derives sign-based stability conditions for feedback struc…
This paper describes the formulation and analog-computer solution of differential mass-transfer equations for rectification of multicomponent mixtures. Using material-balance relations and equilibrium constants expressed through relative volatilities, the author derives equations for component chang…
This paper applies Ambartsumian’s invariance principle to a one-dimensional neutron diffusion problem in a nuclear reactor with fast and thermal neutron groups. By separating neutron fluxes into leftward and rightward components, the authors derive coupled balance equations and introduce a reflectio…
The paper applies the method of generalized coordinates to the three-dimensional space-time dynamics of a cylindrical nuclear reactor in a one-group diffusion approximation. Neutron flux deviations are expanded in eigenfunctions of the spatial operator, while fuel and coolant temperature deviations …
The paper presents a program for computing equilibrium yields of chemical reaction products on the PROMIN electronic digital computer, a machine with limited memory and a restricted command set. It discusses the limitations of standard root-finding methods for such hardware and adopts the Wegstein a…
The paper addresses the preliminary ordering of events in an acyclic network graph used to model complex project development processes. It defines an ordinal function that partitions events into classes according to their predecessor relations, relates this function to earliest event times when all …
This paper describes a preliminary analysis program for PERT-type network graphs intended to localize logical errors that arise when separately prepared graph fragments are joined. It defines consistent paths, closed circuits, and two kinds of breaks, then presents a modified direct-analysis algorit…
This paper presents standard programs for the Minsk-1 computer intended to simplify engineering computations involving complex variables within the Universal Interpreting System. It describes a complex arithmetic program, the Z-program, which redirects the system’s arithmetic pseudocodes to operate …
This paper describes two auxiliary programs developed for the Minsk-1 computer to reduce the manual effort involved in program debugging and modification. The comprehensive debugging program supports execution of specified program segments under the UIS interpreting system, with facilities for preli…
This paper describes a universal interpretive system for the Minsk-1 computer, intended to reduce program memory requirements and support floating-point programming despite the machine’s limited operating memory. The authors define a set of arithmetic and logical pseudocommands, including operations…
This article describes an interpreting system for the Minsk-1 electronic digital computer developed at the Computing Laboratory of TPI as a practical alternative to more complex compiler-based approaches for small and medium machines. It outlines the system’s handling of arithmetic and logical pseud…
This paper examines the statistical laws governing failure-free operating time and restoration time for the Minsk-1 electronic digital computer, using operational data collected over two years under laboratory conditions. Empirical distributions for the machine and selected devices are compared with…
This paper evaluates the operational reliability of the Minsk-1 electronic digital computer using statistical records from technical-operation and machine-time logs. It defines and applies standard reliability and use criteria, including mean time between failures, mean repair time, probability of f…
This paper examines the formation of secondary dispersion halos of uranium and associated pathfinder elements under humid, mountainous taiga conditions with weakly mineralized calcium bicarbonate waters. Using geological, hydrochemical, mineralogical, and geochemical observations from an area of hyd…
The paper addresses the problem of classifying hydrothermal uranium deposits in light of rapidly expanding geological data and divergent Soviet and foreign classification schemes. It argues that a rational systematics should combine several criteria: temperature of formation as the leading division,…
This paper examines the problem of detecting the moment when a drill bit enters a coal seam, a condition necessary for obtaining undisturbed core samples in coal exploration, especially in deposits with thin seams. It classifies possible surface and downhole signaling parameters and sensors, compari…
This paper examines whether concentrations of trace components in groundwater depend systematically on total mineralization, a question relevant to hydrogeochemical prospecting. Using data from several Siberian regions and published studies, the authors compare water types and apply van der Waerden …
This paper examines the Dzheb magnetic anomaly in the Krasnokamensk group of magnetite deposits in the Eastern Sayan, where field intensity and geological setting initially suggested possible magnetite mineralization. The study combines trenching and drilling with measurements of magnetic susceptibi…
This paper addresses the need for a more adequate method of evaluating the economic efficiency of directional drilling in geological exploration wells, especially where existing formulas for multilateral drilling give only approximate results. It reviews earlier approaches and argues that they negle…
This paper refines the biostratigraphy of Cambrian carbonate deposits near Mount Balykhtag on the Batenevsky Ridge, based on 1964 field observations and collections of trilobites, algae, and limited archaeocyaths. The authors distinguish four carbonate members within a folded and faulted section and…
The article examines a key obstacle to tubeless drilling: inadequate cleaning of drilling fluid, which can contaminate circulation and cause sticking of the bottomhole tool. It argues that earlier single-section bailer arrangements did not sufficiently reduce fluid velocity to allow cuttings to sett…
This paper addresses the design of multilateral wells in shot drilling, where repeated use of the main bore can reduce drilling through unproductive horizons but requires careful evaluation of technical feasibility and economic advantage. It develops profiling procedures for two drilling schemes, bo…
This paper addresses the profiling of medium-depth shot-drilled exploration boreholes, arguing that even wells of 150 to 250 m may deviate enough from planned straight trajectories to miss geological targets. Using statistical data from several ore deposits, it represents average borehole curvature …
This preliminary report revises the stratigraphic interpretation of the Torgashinsky district of the Eastern Sayan, based on traverses along the right slope of the Bazaikha valley near the Kaltat and Mokhovaya tributaries and comparison with earlier geological and paleontological studies. The author…
This paper examines the tectonic features and depositional history of the Jurassic coal-bearing sequence at the Irsha-Borodino brown coal deposit, as exposed in open-pit mining. Field observations identify small, localized disjunctive disturbances, combustion-related deformation along the eastern pi…
This paper develops a methodology for improving detailed exploration of simple coal deposits, using eleven explored areas of the Baidaevsky district in Kuzbass as a case study. It analyzes drilling expenditure per reserve unit, reserve-category ratios, geological complexity, coal-bearing productivit…
This paper reassesses the stratigraphic position and age of rocks hosting the Baranovskoye polymetallic mineralization in the Kolyvan-Tomsk folded zone. Using field sections along the Vlaskovo River and near Baranovo, together with fossil determinations from gravelites, shales, and volcanogenic-sedi…
This paper reconstructs the Devonian tectonomagmatic history of the Talanovsky graben in the northern spurs of the Kuznetsk Alatau, emphasizing its relation to deep faults of the regional Tersin tectonic zone. Using the stratigraphic position, composition, facies relations, and intrusive relationshi…
This paper reexamines the stratigraphic interpretation of Cambrian and older metamorphosed sequences in the upper Anyyak-Orug River basin of Western Tuva, especially the proposed Amyl, Syutkhol, and Ishkin formations. Using field observations and lithologic comparison with sections in the Western Sa…
This paper reassesses the age and stratigraphic correlation of the massive archaeocyathid limestone sequence exposed near Katyushkina village on the Batenev Ridge. Using detailed geological mapping and additional collections of algae, archaeocyathids, and trilobites from successive members of the ca…
This paper reassesses the stratigraphic and structural position of the Babakov limestone in the Cambrian sequence of the northern Western Sayan, where its age and relation to adjacent volcanic units had been interpreted differently by earlier researchers. Using detailed geological mapping, fossil co…
This paper examines syenitization in intrusive host rocks of the Kondoma iron-ore district, where gabbro-syenite bodies are closely associated with contact-metasomatic iron mineralization. Using borehole, trench, macroscopic, and petrographic observations, the authors describe alkaline replacement o…
This paper examines the gabbro-syenite magmatic complex of the Kochura area in the southern Kondoma iron ore zone, where iron ore deposits are associated with syenite intrusions. On the basis of petrographic mapping, petrochemical analyses, and trace-element data, the study distinguishes gabbro and …
