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 mechanism by which insulating barriers increase pulsed breakdown voltage in liquid dielectrics, focusing on transformer oil and distilled water in rod to plane gaps under 1.5/70 microsecond voltage impulses. Using simultaneous voltage measurements, optical spatiotemporal reco…
This paper analyzes methods for synchronizing electron injection in betatron induction accelerators, where radiation intensity is highly sensitive to the injection phase. It compares synchronization schemes based on magnetic flux sensors, electronic delay circuits, voltage signals, and magnetizing c…
This paper analyzes the betatron electromagnet as a nonlinear resonant load for semiconductor frequency converters, with attention to how frequency and voltage instability affect converter sizing and operation. The authors derive relations for a parallel resonant supply circuit, then approximate the…
This paper analyzes a sinusoidal oscillation generator using a semi-controlled valve, specifically a thyratron, for supplying resonant electromagnet windings in accelerator systems such as betatrons. It develops an equivalent circuit model for pulsed energy injection into a high quality factor reson…
This paper examines vacuum tube amplifier circuits in which feedback is taken through or applied to the screen grid, with particular attention to the ultralinear output stage. It argues that standard linear feedback theory is insufficient for large-signal operation and develops a graphical and analy…
This paper evaluates a compensation phase magnetometer used to measure phase inhomogeneity in betatron magnetic fields, with attention to the accuracy and productivity required for accelerator adjustment. The authors describe an experimental instrument based on zero-field sensors, analyze major erro…
This paper examines difficulties in measuring the phase inhomogeneity of betatron electromagnets operated with mixed power supply, consisting of a constant bias field and an alternating field. It analyzes how increasing premagnetization shifts the magnetic-field zero crossing into a region of reduce…
This paper discusses the selection of ultrasonic radiation parameters for noncontact measurement of part dimensions during machining. It presents a two-stage ultrasonic location method combining coarse wavelength-based measurement with precise phase measurement, and derives formulas for choosing wav…
This paper examines how the choice of injection voltage affects the accelerated charge and overall specific characteristics of portable compact betatrons. The authors derive relationships linking captured charge to chamber geometry, injection voltage, injector overshoot, cathode current density, and…
This paper proposes a practical mathematical description of betatron radiation intensity for use in control and stabilization problems. It argues that, for a given accelerator over short operating intervals, the maximum intensity is mainly determined by injection voltage and electron energy, while i…
The paper addresses the estimation of reservoir permeability from steady-state well inflow data, noting that core measurements may overstate near-wellbore permeability and that pressure build-up methods are often impractical for field personnel. It argues that the standard Dupuit inflow formula is i…
The paper proposes a method for determining the attitude elements of deep strata intersected by a dual-bottomhole well, addressing the cost and operational limitations of oriented coring, inclinometry, and three-bottomhole approaches. The method treats intersections of conformable beds by the two br…
This paper examines hazards associated with extracting burnt rock from coal mine waste heaps in the Kuzbass basin, where such material was widely used for construction and stowing. Drawing on observations of collapses at active and inactive dumps, it describes collapse volumes, durations, dust and f…
This article examines the permissible weight of handheld mechanized tools, using mining electric drills as the principal example. It argues that tool design has relied too heavily on technical indicators such as specific weight while neglecting the human operator, and reports mine and laboratory stu…
This paper argues that the average rate of rock roadway excavation in Kuzbass, then about 40 to 70 m per month, could be raised substantially, with 200 m per month presented as an attainable target. Drawing on examples of high speed drivage in regional mines, it attributes successful performance les…
This paper examines the use of directional drilling tools and borehole curvature patterns to determine the attitude elements of geological structures during mineral exploration. Drawing on experience at Tomsk Polytechnic Institute and field examples from deposits in Kazakhstan and Kuzbass, it argues…
This paper examines the intensity of wellbore curvature in wells drilled by the Aleksandrovsk Oil Exploration Expedition in the Middle Ob region. It defines curvature intensity as the spatial change in borehole direction between measurement points, derives a formula using zenith angles and azimuth d…
Petrovsky examines V. V. Bogatsky’s statistical and analytical method for determining exploration network density through limiting interpolation, or analogy, errors. Using calculations for coal seam parameters and algebraic analysis of Bogatsky’s formulas, the paper argues that the proposed relation…
This paper examines the technical and economic difficulties of rotary drilling large-diameter groundwater exploration and production wells in hard rocks, using data from the Vostokburvod trust and related research by the Department of Exploration Engineering. It analyzes well depths, diameters, rock…
This paper identifies and characterizes a newly recognized gas-bearing region in the northeastern West Siberian Lowland, centered on the Malokhetsky swell and associated local uplifts. Using well results, structural data, and lithologic and facies analysis of Jurassic and Lower Cretaceous deposits, …
The paper develops a methodology for calculating the hourly and shift productivity of powered support handlers used in driving mine workings with continuous prefabricated reinforced-concrete supports. Using operating data from the UT-1 tubbing handler at the Chertinskaya-Zapadnaya mine, it decompose…
This article examines the problem of determining age relationships between hydrothermal ore bodies and igneous dikes, focusing on cases where apparent dike intersections of ore bodies may be misleading. Drawing on examples from gold, polymetallic, lead-zinc, and pyrite deposits, especially in the Ku…
This paper revises the stratigraphy of the lower Cambrian deposits on the southwestern slope of the Kuznetsk Alatau, focusing on the Kamzas syncline and evaluating shortcomings in the regional scheme adopted in 1965. On the basis of four years of stratigraphic and paleontological field investigation…
This paper refines the stratigraphy and geological structure of Middle Cambrian deposits near Oktyabrsky Settlement on the Batenevsky Ridge, where earlier age assignments were uncertain because of limited paleontological evidence. Using field mapping, lithological description, structural observation…
This paper examines the Lower Cambrian spilite-diabase formation of the Talon-Kamzas area in the southwestern Kuznetsk Alatau, addressing poorly resolved questions of the composition and formation conditions of ancient volcanogenic sequences. On the basis of field sections, petrographic description,…
Detailed mapping and fossil collecting in the upper Sukhaya Erba River area of the Batenevsky Ridge are used to revise a previously schematic Upper Precambrian to Cambrian stratigraphy. The authors describe lithologic successions, fossil assemblages of algae, archaeocyaths, and trilobites, and struc…
This paper examines the geology and petrography of the Lebedev pluton in Gorny Altai, a batholith-like intrusive body situated within the Kondoma-Lebed mobile zone. On the basis of field relations, petrographic descriptions, and quantitative mineralogical data, it distinguishes early gabbroid bodies…
This paper characterizes the Karakan coal deposit on the left bank of the Inya River in Kuzbass, identified as a brachysynclinal structure containing productive Upper Permian coal-bearing deposits of the Yerunakovskaya suite. Using lithological description, sandstone petrography, spore-pollen analys…
This paper examines how the quality and technological characteristics of coals from the Irsha-Borodino deposit, particularly the Borodino seam, relate to their petrographic composition. Using previously obtained proximate, ultimate, ash-chemistry, and petrographic data, the study compares coal types…
This paper examines explosion breccias, welded tuffs, dike-like bodies, and associated volcanic-plutonic rocks in the Yulia mine area of the Batenyov Ridge. Using field relationships, petrographic observations, chemical analyses, trace-element data, and comparative diagrams of rock composition, the …
This paper reports a newly observed zinc and lead ore occurrence in northwestern Kemerovo Oblast, near the junction of Kuzbass and the Kolyvan-Tomsk folded zone, identified during hydrogeochemical investigations. It describes the regional Devonian to Carboniferous stratigraphy, structural setting, h…
This paper characterizes intrusive magmatism in the poorly studied Uvolga Chapa interfluve of the northern Yenisei Ridge, using field observations from 1960 to 1963 together with petrographic, petrochemical, facies, and geologic relationships. It distinguishes five successive intrusive formations: U…
This paper examines the petrochemical characteristics of Devonian volcanogenic and intrusive rocks of the Talanovsky graben in the Kuznetsk Alatau. Using chemical analyses recalculated by the method of A. N. Zavaritskii and represented on petrochemical variation diagrams, the authors compare two mai…
This paper presents a petrographic description of the Batanayul alkaline rock massif in the northern Kuznetsk Alatau and reassesses the origin of its nepheline-bearing rocks. On the basis of field observations of contacts, chilled margins, fracture systems, and microscopic mineralogical study, the m…
This paper examines the geological structure, contact relations, and petrochemical composition of the Mustag pluton in the Kondoma iron ore district of Mountain Shoria, where granitoids occur near mineralization of potential economic interest. Using field observations of intrusive contacts, crosscut…
This paper reviews the significance of accessory minerals for interpreting igneous rocks, beginning with competing definitions of the term and adopting a formulation that emphasizes their small abundance, characteristic composition, and concentration of accessory elements. It summarizes how accessor…
This paper examines the facies and geochemical conditions under which the Upper Cretaceous to Lower Paleogene oolitic iron ore sequence of the Bakchar deposit formed in the southeastern West Siberian iron ore basin. Using lithologic facies mapping, structural reconstructions of depositional surfaces…
This paper examines alkaline alteration of effusive sedimentary host rocks around the Tashtagol gabbro syenite iron-bearing intrusion, focusing on syenitization of chlorite-sericite-quartz schists, effusive plagioclase porphyrites, and limestones. On the basis of petrographic observations from mine …
This paper examines the petrography and intrusive relations of the gabbro-syenite complex in the Shalym area of the Kondoma iron ore district, where gabbroic bodies, syenite massifs, and dike rocks intrude Middle Cambrian effusive sedimentary formations. Using field relations, borehole observations,…
This paper presents a geological, petrographic, and geochemical description of the Izykh gabbroid massif in the Kuznetsk Alatau, a layered lopolith-like body intruding the Karatag carbonate-amphibolite sequence and later affected by the Ulen-Tuim granitoid intrusion. On the basis of field relations,…
This paper examines the accessory mineral assemblage of aplite-like granites in the Buzurgat area of the Ulen-Tuim pluton, Khakassia, and evaluates its mineralogical and geochemical significance for correlating intrusive phases. Based on crushed samples, heavy-mineral concentrates, and polished-sect…
This paper examines accessory magnetite from granites of the Turochak massif and diorites of the Ulmen massif in Gorny Altai to assess the influence of the younger granite intrusion on adjacent diorites. Using sampled profiles across the contact zone, mineralogical observations, magnetite morphology…
This paper examines horizontal mineralization zoning in the Central gold ore field of the Mariinsk taiga, where gold-bearing quartz veins occur within a granodiorite massif and related fracture systems. Using comparative mineralogical and geochemical observations, including trace elements in beresit…
This study investigates the preparation of new alkanolcarbazoles and related derivatives as intermediates for substituted 9-vinylcarbazoles. The authors examine hydroxyl to chlorine substitution using thionyl chloride in pyridine and phosphorus pentachloride, nitration of 9-(β-chloro)ethylcarbazole,…
This paper describes the design and operation of an automated pulsed fluidized bed unit for granulating and drying powdered pharmaceutical materials with initial moisture contents of 15 to 25%. Based on studies of nonstationary effects in fluidization and drying, the proposed dryer uses sinusoidally…
This study examines entrainment of granulated pharmaceutical preparations from a fluidized bed under steady and sinusoidally pulsating air flows, motivated by the design of a drying installation and its dust collection system. Experiments in a conical cylindrical batch apparatus measured entrainment…
This study examines how steady and sinusoidally pulsating air flows affect the fluidization of granular beds, with emphasis on pharmaceutical preparations and poppy seeds of differing particle size and composition. Experiments compared stable fluidization conditions under steady flow and low-frequen…
This paper examines the dynamic characteristics of continuously operating heat exchangers whose external action, such as heating-medium temperature or heat flux, is constant along the flow coordinate. It proposes an analytical approach that relates distributed partial differential models to lumped m…
This paper develops algorithms for digital computation of transient responses in distributed-parameter heat exchanger models with an internal heat source or constant heat flux. Starting from the governing differential equation, the authors derive transfer functions separating a lumped-model componen…
The paper develops computational algorithms for transient analysis of heat exchangers in which the heating medium remains at constant temperature, treating the exchanger as a distributed-parameter object. Starting from the governing differential equation and its transfer-function representation, the…
