Mathematics and mechanics

EXACT SOLUTIONS IN THE THEORY OF NONLINEAR LONG WAVES IN FLUIDS WITH VORTEXES AND PRESSURE

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Research article

Timchenko T. V.

DOI:

https://doi.org/10.60797/IRJ.2026.165.87

EDN:

ZRAWXE

Suggested:

02.02.2026

Accepted:

27.02.2026

Published:

17.03.2026

Issue: № 3 (165), 2026

Rightholder: authors. License: Attribution 4.0 International (CC BY 4.0)

311

ON THE APPLICATION OF LYAPUNOV'S QUADRATIC FUNCTIONS WITH GIVEN PROPERTIES FOR STUDYING THE STABILITY OF LAGGING SYSTEMS

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Research article

Besklubnaya A. V.

DOI:

https://doi.org/10.60797/IRJ.2026.165.20

EDN:

FJMCGM

Suggested:

03.12.2025

Accepted:

18.02.2026

Published:

17.03.2026

Issue: № 3 (165), 2026

Rightholder: authors. License: Attribution 4.0 International (CC BY 4.0)

278

Synthesis of spherical vaterite during the crystallisation of calcium carbonate in the presence of albumen

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Research article

Stepanova A. A.

DOI:

https://doi.org/10.60797/IRJ.2025.160s.37

EDN:

UOMZBF

Suggested:

25.08.2025

Accepted:

31.08.2025

Published:

24.10.2025

Issue: № 10 (160) S, 2025

Rightholder: authors. License: Attribution 4.0 International (CC BY 4.0)

615

Numerical solution of a boundary value problem describing convective current of viscous incompressible fluid in a horizontal layer

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Research article

DOI:

https://doi.org/10.60797/IRJ.2025.160s.32

EDN:

JOPUFK

Suggested:

19.08.2025

Accepted:

21.08.2025

Published:

24.10.2025

Issue: № 10 (160) S, 2025

Rightholder: authors. License: Attribution 4.0 International (CC BY 4.0)

607

STATISTICAL PROCESSING OF THE RESULTS OF MONITORING ORNITHOLOGICAL COMPLEXES IN THE TERRITORY OF THE BOTIEVSKY WIND PARK (ZAPORIZHZHIA OBLAST)

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Research article

Siokhin V. D.

Yeremeev V. S.

Petrenko I. A.

DOI:

https://doi.org/10.60797/IRJ.2025.159.78

EDN:

PPGAZA

Suggested:

10.04.2025

Accepted:

23.07.2025

Published:

17.09.2025

Issue: № 9 (159), 2025

Rightholder: authors. License: Attribution 4.0 International (CC BY 4.0)

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