Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
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Name

Lebedev Konstantin Andreyevich

Scholastic degree

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Academic rank

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Honorary rank

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Organization, job position

Kuban State University
   

Web site url

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Email

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Articles count: 13

267 kb

ADAPTIVE TIME SERIES MODELS OF A MOUNTAIN RIVER LEVEL

abstract 1141510109 issue 114 pp. 1517 – 1530 30.12.2015 ru 894
The article presents a technique of short-term forecasting of water level in the river bed of a mountain type using Markov’s chains
190 kb

MATHEMATICAL MODEL OF THE CORRECTION OF PH SOFTENED WATER IN A LONG CHANNEL OF ELECTRODIALYSIS WITH BIPOLAR MEMBRANE

abstract 1261702002 issue 126 pp. 33 – 49 28.02.2017 ru 865
Theoretically and experimentally, we investigated the process of adjusting the pH of natural water of hydrocarbonate class electrodialyzer with bipolar membranes with channel length of 40 cm. We experimentally measured concentration of components, pH of the solutions in alkaline and acid channels of electrodeposition depending on the current density. The article describes a mathematical model for long channels; to scale the mass transfer characteristics of the process there was applied and verified a method of compartmentalization, which gave the possibility to calculate the dependence of the component along the channel length at different velocities of flow of the solution. Numerical calculations were compared with experimental data on electrodialyser of 10 cm and 40 cm length
284 kb

MATHEMATICAL MODELING OF ION TRANSPORT THROUGH MEMBRANES IN THE CONDITION OF PREVIOUS SLOW HOMOGENEOUS CHEMICAL REACTION. MATHEMATICAL PROBLEM

abstract 1251701003 issue 125 pp. 85 – 101 31.01.2017 ru 744
In the article we build a mathematical model of elec-tro-diffusion of ions in the diffusion layer of a mem-brane system complicated by the occurrence of the previous slow homogeneous chemical reaction with the condition of electrical neutrality of the solution. We have set a two-point boundary value problem and developed a method to solve it; we have given an algorithm and a numerical method for solving it in Comsol 3.5 environment. The formula for limiting kinetic current was derived. Some of the model’s capabilities to describe the properties of the system are given
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