http://repositsc.nuczu.edu.ua/handle/123456789/32 2026-07-09T07:43:46Z 2026-07-09T07:43:46Z Holota, Volodymyr Strelnikova, Elena Degtyarev, Kyryl Sierikova, Olena http://repositsc.nuczu.edu.ua/handle/123456789/28897 2026-06-28T10:29:34Z 2026-06-20T00:00:00Z

Title: PROBLEMS OF HAZARDOUS LIQUIDS TRANSPORTING IN TANKS OVER ROUGH ROADS Authors: Holota, Volodymyr; Strelnikova, Elena; Degtyarev, Kyryl; Sierikova, Olena Abstract: The paper treats the influence of road surface irregularities on the dynamics of the hazardous liquids movement in tanker trucks. The features of the occurrence of liquid sloshing under the vertical and horizontal vibrations of the vehicle, as well as the conditions for the occurrence of resonant and parametric resonant phenomena, have been considered.

2026-06-20T00:00:00Z SIERIKOVA, Olena Yevsiukov, Olexander Strelnikova, Elena Degtyariov, Kyryl http://repositsc.nuczu.edu.ua/handle/123456789/28491 2026-06-10T13:29:21Z 2026-06-10T00:00:00Z

Title: ENVIRONMENTAL PROTECTION FROM TECHNOGENIC OBJECTS UNDER EARTHQUAKE AND EXPLOSION EFFECTS Authors: SIERIKOVA, Olena; Yevsiukov, Olexander; Strelnikova, Elena; Degtyariov, Kyryl Abstract: It has been established that the use of the proposed liquid damper leads to a significant reduction in the vibration amplitude of the elastic element over the entire load range examined. The liquid dampers implementation will allow the development of effective practical solutions to ensure the stability of buildings and critical infrastructure facilities and reduce environmental threats under the influence of seismic loads, military explosions, and emergencies.

2026-06-10T00:00:00Z Kausar, A., Hussain, U., Siddiqui, H. F., Ashraf, A., Goroneskul, M., Ouiya, F., Khan, A. H., Malik, M., Borysenko, V., and Sivik, O. http://repositsc.nuczu.edu.ua/handle/123456789/28015 2026-03-24T19:33:44Z 2025-01-01T00:00:00Z

Title: Evaluating marine debris pollution: A study of Sandspit and Clifton beaches in Karachi coast. Authors: Kausar, A., Hussain, U., Siddiqui, H. F., Ashraf, A., Goroneskul, M., Ouiya, F., Khan, A. H., Malik, M., Borysenko, V., and Sivik, O. Abstract: Marine debris poses a significant threat to the coastal environment and marine life as a whole. This study examines the presence, quantity, and composition of marine debris on Sandspit and Clifton beaches (commonly known as Sea View) in Karachi, Pakistan, as well as the impact of debris on marine ecosystems and sea turtle nesting sites. During the study, samples of various types of debris were collected and analyzed using a random sampling method at differ-ent points along each beach. According to the results, plastic was found to be the most common type of debris on both beaches, representing a substantial portion of the total waste. Other common types of debris included paper waste, tetra packs, wood, Styrofoam, medical waste, and other materials. The study revealed that beach pollution poses a serious threat to sea turtles, particularly due to entanglement in fishing nets and ingestion of plastic waste. Based on the findings, recommendations are proposed to improve waste management and reduce pollution along the coastline.

2025-01-01T00:00:00Z SIERIKOVA, Olena Strelnikova, Elena Degtyarev, Kyryl Kriutchenko, Denys http://repositsc.nuczu.edu.ua/handle/123456789/27997 2026-03-19T21:28:36Z 2026-02-23T00:00:00Z

Title: BOUNDARY ELEMENT METHOD IN INVESTIGATION OF FLUID OSCILLATIONS IN SHELLS OF REVOLUTION WITH AND WITHOUT BAFFLES Authors: SIERIKOVA, Olena; Strelnikova, Elena; Degtyarev, Kyryl; Kriutchenko, Denys Abstract: This work focuses on the mathematical modeling and numerical analysis of fluid oscillations in axisymmetric shells of revolution, specifically conical and spherical geometries, both with and without internal horizontal baffles. The primary objective of the study is to develop and validate a boundary element method to solve three-dimensional boundary value problems governing the motion of an ideal incompressible fluid. The proposed boundary element framework allows for an efficient and accurate assessment of influencing the internal baffles and their geometric parameters on the natural frequencies and mode shapes of fluid oscillations. This capability is particularly important for understanding sloshing behavior and mitigating its adverse effects in engineering systems. The methodology provides both theoretical advancement and practical significance in the area of fluid–structure interaction modeling. Future investigations will aim on extending the present model to incorporate strong seismic loading, nonlinear dynamic effects, and more sophisticated fluid-structure coupling mechanisms, thereby improving the accuracy and reliability of predictions for complex realworld engineering systems.

2026-02-23T00:00:00Z