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Showing 50 of 25456 papers
MICROWAVE SPECTROSCOPY
OBSERVATION OF COSMIC RADIATION USING PLATES SENSITIVE TO ELECTRONS
Part I of this article describes the most interesting phenomena produced by charged mesons and detected in observations of cosmic radiation using the new plates. Part II describes a phenomenon that serves as further evidence for the existence of mesons with a mass greater than that of $\pi$ particle…
Lifetime of Heavy Mesons
Scientific Discussion on the Nature of Photosensitivity and the Mechanism of Formation of the Latent Photographic Image
Diffuse Scattering of X-Rays at Small Angles
Modern Theory of Magnetism
GIANT ACCELERATOR PROJECTS FOR PRODUCING PARTICLES WITH ENERGIES OF \(10^{10}\) eV
LENIN’S THEORY OF KNOWLEDGE AS THE PHILOSOPHICAL FOUNDATION FOR THE DEVELOPMENT OF PHYSICS
Zirconium Lamps
DEVICES FOR GAS DOSING
STUDY OF THE ATOMIC STRUCTURE OF AGING ALLOYS
ABSOLUTE CAPILLARY VOLTMETER
ENERGY LEVELS OF ATOMIC NUCLEI
Physicochemical Phenomena During the Deformation of Metallic Single Crystals
Design of Linear Accelerators
DIFFRACTION SCATTERING OF FAST NEUTRONS AND CHARGED PARTICLES
In the present article, we shall present in detail the theory of diffraction phenomena that occur in the scattering of fast particles by absorbing nuclei, considering both neutral and charged particles.
Experiments in Radar Detection of the Moon
SHIFT OF THE TERMS OF HYDROGEN-LIKE ATOMS AND THE ANOMALOUS MAGNETIC MOMENT OF THE ELECTRON
M. A. Konstantinova-Shlezinger, *Luminescence Analysis*.
Book review: M. A. Konstantinova-Shlezinger. Luminescence Analysis.
F. F. PETRUSHEVSKY’S REFORM
Structural formulas and characteristics of 91 dyes are given.
Double resection, its generalization, and various methods of solution
This article surveys and systematizes methods for solving double resection in geodesy, including the classical Hansen problem and its generalized form. It distinguishes logarithmic procedures from natural formulas intended for arithmometer computation, reviews established approaches such as auxiliar…
Technical and Economic Assessment of Process Complex Layouts on the Surface of Kuzbass Mines (Discussion Paper)
This discussion paper evaluates alternative layouts for mine-surface coal handling complexes in the Kuznetsk Basin, focusing on loading, storage, mechanization, and capital and operating costs. It compares older bunker and trestle arrangements, interconnected bunker and scraper storage schemes, and …
Is it Necessary to Ground the Neutral of Transformers in Mines? (for Discussion)
This discussion paper examines whether mine transformer neutrals should remain isolated or be grounded, focusing on electric shock, ground faults, fires, explosions, and stray-current hazards in low-voltage mine networks. It compares theoretical formulas for touch current with experimental measureme…
Protection Against Ground Faults in Mine Sectional Networks
This paper examines protection against single-phase ground faults in low-voltage mine section networks, where existing grounding and insulation-monitoring methods are judged inadequate for limiting touch voltage and preventing dangerous double faults. It analyzes fault-current distribution in isolat…
Calculation of Metal Rheostats and Adjustment of Contactor Panels for Mine Hoisting Installations
This paper addresses the calculation of metal starting rheostats and the adjustment of contactor panels for asynchronous electric drives in mine hoisting installations. It criticizes methods based solely on circle diagrams or motor mechanical characteristics for neglecting voltage variation, load di…
Calculation of Hoisting Ropes Based on Load Factors and End Load
This paper critiques the prevailing practice of calculating mine hoisting ropes solely from static load and prescribed safety margins, arguing that it does not adequately reflect hoisting height, conveyance type, rope wear, bending, dynamic oscillations, or motor control. It proposes a calculation m…
On the Application of District (Sectional) Ventilation in Coal Mines of the Kuznetsk Basin
This paper examines the need for district or sectional ventilation in gassy coal mines of the Kuznetsk Basin, where increasing seam gas emissions with depth require large air quantities and can produce excessive mine depression. Using ventilation resistance formulas, standard mine working dimensions…
Analysis of Methods for Determining Expected Gas Emission in Coal Mines
This article examines the problem of forecasting methane emission for ventilation design in coal mines of the Kuznetsk Basin, where reliance on gas abundance or neighboring mine data is shown to be unreliable. It critically reviews practical methods for determining seam gas content, including face s…
On a New Type of Breakthrough Drilling Machine
The article addresses the mechanized driving of coal chutes in thick, steeply dipping Kuzbass seams, where blasting and pneumatic pick methods are slow or unsuitable and existing percussion-rotary machines suffer from drill-rod bending, transport obstruction, and poor coal removal. It analyzes these…
PHOTOGRAPHS OF NARROW SHOWERS
COUNTERS WITH HIGH RESOLVING POWER
MASS AND RANGE OF PLUTONIUM FISSION FRAGMENTS
On Methodological Errors in Prof. S. E. Khaikin’s Book *Mechanics* *)
Study of (d, p) Reactions on Magnesium, Aluminum, Silicon, and Oxygen
Z. G. PINSKER. _Electron Diffraction._ Edited and with a preface by Academician A. A. Lebedev. Publishing House of the Academy of Sciences of the USSR, 1949, 404 pp., 153 figs.
Book review: Z. G. Pinsker. Electron Diffraction.