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Mainournal ArchiveYear 2020 / № 2

Issue: #2 (89)

DOI 10.18698/1812-3368-2020-2

Mathematics

Simulation of Elastic Tree-Like Dynamic Systems in Presence of External Holonomic Constraints
Authors: Gevorkian H.A.  

Category: Mathematics | Chapter: Differential Equations, Dynamic Systems, and Optimal Control

  
Keywords: Newton --- Euler method, dynamic system, elastic tree-like systems, Lagrange multipliers, slider-crank mechanism, elastic connecting rod, deformations, holonomic constraint
Axisymmetric Stressed State of Uniformly Layered Space with Periodic Systems of Internal Disc-Shaped Cracks and Inclusions
Authors: Hakobyan V.N., Amirjanyan H.A., Kazakov K.Ye.  

Category: Mathematics | Chapter: Differential Equations, Dynamic Systems, and Optimal Control

  
Keywords: mixed problem, disk-shaped crack, circular rigid inclusion
Generalization of Bass --- Gura Formula for Linear Dynamic Systems with Vector Control
Authors: Lapin A.V., Zubov N.E.  

Category: Mathematics | Chapter: Mathematical Physics

  
Keywords: automatic control system, modal controller, analytic solution, scalar control, vector control, state-vector feedback, matrix spectrum, characteristic polynomial, block-matrix, similarity transformation, block transposition of a matrix

Physics

Mathematical and Physical Simulation of the Cross-Flow Velocity Pulsation Effect on the Flame Structure during the Diffusion Mode of Methane Combustion
Authors: Arefyev K.Yu., Fedotova K.V., Krikunova A.I., Panov V.A.  

Category: Physics | Chapter: Thermal Physics and Theoretical Heat Engineering

  
Keywords: flame structure, diffusion flame, methane combustion, cross-flow, acoustic impact, flamelet model, eddy dissipation concept model
Study of Vortex Noise of Rotating Blades
Authors: Moshkov P.A.  

Category: Physics | Chapter: Acoustics

  
Keywords: vortex noise, rotational noise, dipole source, acoustic measurements, aeroacoustics, propeller noise
Experimental Evaluation of Thermophysical Characteristics of High-Temperature Thermal Insulation Materials
Authors: Tomak V.I., Burkov A.S., Rytsarev A.M., Tovstonog V.A.  

Category: Physics | Chapter: Thermal Physics and Theoretical Heat Engineering

  
Keywords: thermal conductivity, thermal diffusivity, temperature, thermal insulation materials, experimental methods, multi-nozzle torch
Stopping Power of Alpha Particles in Helium Gas
Authors: Hiwa M.Q.  

Category: Physics | Chapter: Physics and Technology of Nanostructures, Nuclear and Molecular Physics

  
Keywords: range of alpha particle, detector in vacuum chamber, helium gas medium, energy resolution, Bethe theory

Chemistry

Herbal Shampoos Based on Vegetable Waste Production
Authors: Kokhanskaya M.V., Bushkevich N.V., Klintsevich V.N., Flyurik E.A.  

Category: Chemistry | Chapter: Bioorganic Chemistry

  
Keywords: shampoo, anionic surfactant, sodium laureth sulfate, tincture, blueberry leaves tall, seed buckwheat grass