Výsledky vyhledávání - "N. A Kochina"

[Arterial impedance in transient modes of the performance of the circulation system]

Autor: V L, Karpman, V R, Orel, N G, Svorovskaia, N G, Kochina

Publikováno v: Kardiologiia. 31(4)

The authors consider transient processes for modifying arterial impedance, peripheral and elastic resistances of the arterial system, as well as some major hemodynamic parameters early in muscular performance. The analysis was made by applying experi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::a2c63ba072110c0ca09736479d702398
https://pubmed.ncbi.nlm.nih.gov/2067176

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Problem of control of the level of groundwater during irrigation for the three-dimensional case

Autor: N. N. Kochina

Publikováno v: Journal of Applied Mechanics and Technical Physics. 18:231-235

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::743eb4c1ae1249d66cc38ceed7c1266c
https://doi.org/10.1007/bf00859812

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Transient motion of groundwater (subsurface water) in the presence of evaporation

Autor: N. N. Kochina

Publikováno v: Journal of Applied Mechanics and Technical Physics. 16:297-302

The spread of a mound of groundwater in the region between two parallel channels with different water levels (H1 at x = 0 and H2 at x = L) during irrigation is studied with due allowance for evaporation. Evaporation is taken into account in relation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6acb2deaa9c4ced4eb2e287caf2285d6
https://doi.org/10.1007/bf00858934

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Unsteady motion of viscous fluid in an expanding tube

Autor: N. N. Kochina

Publikováno v: Fluid Dynamics. 18:401-404

The problem of unsteady motion of a viscous compressible fluid in a semiinfinite tube with horizontal axis is solved by successive approximation. The circular cross section of the tube depends exponentially on the coordinate measured along the tube a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::653a09d2fa2048a0aa145f48a5dc9431
https://doi.org/10.1007/bf01090557

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Nonstationary motion of a viscous fluid in a long tube

Autor: N. N. Kochina

Publikováno v: Fluid Dynamics. 15:822-829

A number of problems are solved for the nonstationary motion of a viscous compressible fluid in a tube with elastic walls. It is assumed that the tube is semi-infinite, its axis horizontal, and that at one of its ends the flow rate of the fluid can c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::29aee0e9eb44699d6293604df7d33d9a
https://doi.org/10.1007/bf01096630

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A solution of the diffusion equation with nonlinear right-hand side

Autor: N. N. Kochina

Publikováno v: Journal of Applied Mechanics and Technical Physics. 10:594-599

The division of a rectangular pile of subsoil water between two channels with different water levels is considered. Evaporation is allowed for as a function of the depth of the subsoil stream. The problem reduces to solution of a nonlinear integral e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2c9dddd43c52fa26338c12513d109f8f
https://doi.org/10.1007/bf00916216

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Irregular movement of ground waters with evaporation

Autor: N. N. Kochina

Publikováno v: Journal of Applied Mechanics and Technical Physics. 11:611-614

The problem of variation in the level of ground waters between two vertical channels is examined, taking into account the evaporation, which is nonlinearly dependent on the level of the ground waters. The problem is reduced to integration of a diffus

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2f3f3b0fe8dac7253fad45f6e07af760
https://doi.org/10.1007/bf00850846

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