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78 Scientific Journals of the Maritime University of Szczecin, no. 78 / 2024



 

Recent Submissions

  • Chełstowska, Aleksandra; Osypchuk, Oleksandra; Sosik, Katarzyna (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    With the dynamic socio-economic development of cities, actions of key importance have become necessary to ensure the required accessibility of urban transport. This goal can be achieved by expanding and modernizing the transport infrastructure and expanding the public transport network. It is transport that ensures the flow of goods and the movement of people in cities and beyond their borders. This state of affairs results in an increased importance of appropriate infrastructure, where construction investments have a fundamental role, and the method of their implementation affects a number of areas that significantly determine transport accessibility. This article aims to assess the impact of construction projects involving civil engineering facilities on transport accessibility based on the example of the city of Szczecin. The research process is based on unstructured observation and expert interviews, which allow for the development of a structured survey questionnaire. The authors manage to identify the elements of transport accessibility that are most negatively affected by construction projects. The collected data may constitute a basis for developing recommendations for local authorities and construction companies to reduce the diagnosed negative impact in the studied area.
  • Bonato, Jasminka (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Natural rubber is an important industrial material derived from caoutchouc trees (Hevea Brasiliensis). By chemical composition, it is a polymer material that is mostly cis-1,4-polyisoprene. It falls into the category of elastomers, which enables its wide usage due to its specific characteristics. Polymer materials include plastic, rubber, and glue and are the most important technical materials. Rubbers are used in the production of conveyor belts, shock absorbers, coatings, fenders, engines, and device parts. They are also used in composite materials such as threads, particles, and matrix materials. By analyzing the properties of natural rubber, the subject of the research is defined, i.e., the characterization of natural rubber samples and their connection with macroscopic properties. In accordance with the subject of the research, in this paper, tests are carried out on samples of natural rubber, which are obtained in the form of thin films from latex and cross-linked by gamma radiation. A total dose of 300 kGy is applied to the samples in the state of uniaxial deformation. In this sense, a hypothesis is put forward that involves examining the influence of radiation dose on the morphology of natural rubber samples using scanning electron microscopy (SEM) and energy-dispersive X-ray spectrometry (EDX). The investigation aims to emphasize the importance of the method in acquiring a comprehensive characterization of the material samples, which are used both in maritime areas and in other fields of application.
  • Barczak, Agnieszka; Kauf, Sabina (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    The COVID-19 pandemic has caused vast changes in the functioning of societies and economies, including restrictions on the use of rail transportation. As a result, the number of passengers has declined, and despite the lifting of restrictions, it is still difficult to estimate when and if passenger rail traffic will return to its pre-pandemic state. Therefore, it seems important to consider the following: how the pandemic has affected the transportation behavior patterns of residents and, above all, what should be done to encourage passengers to use rail transportation more often, which is more environmentally friendly and reduces greenhouse gas emissions. Thus, it seems important to consider what the “new normal” in rail transportation should look like. This article analyzes the number of passengers traveling by rail in eight European countries. This work considers quarterly data for 2013‒2019, combined passenger forecasts for 2020‒2021, and annual forecasts of rail passenger traffic until 2025 built using data for 2012‒2021.

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