https://journals.prz.edu.pl/pe <div align="justify"> <p>Scientific Papers of the Rzeszów University of Technology - <strong>Physics for Economy</strong> - published since 2017, are a continuation of scientific publications published since 1984, under the name MATEMATICS and PHYSICS.&nbsp;It is an open access log, issued on a continuous basis. Scientific Papers of the Rzeszów University of Technology, Physics for Economy, include original scientific papers on: nano-particles, optical image analysis, fiber optic sensors, metrology of physical quantities, spintronics, acoustics, magnetostriction, laser processing, mechanical properties, computer science and its applications in the above-mentioned.</p> <p><strong><a href="https://portal.issn.org/resource/ISSN/2544-7750">e - ISSN 2544-7750&nbsp;</a> &nbsp;</strong></p> </div> Politechnika Rzeszowska im. Ignacego Łukasiewicza en-US Physics for Economy 2544-7750 https://journals.prz.edu.pl/pe/article/view/1402 <p class="a-abstract-EN"><span lang="EN-GB">Quinones and its derivatives – vitamin K are well known species in medicine. The chemical structure, configurational isomerism of vitamin K and the differences in the biological activity is shown in this paper.</span></p> Tadeusz Jasiński Violetta Bednarska Marian Kuźma Copyright (c) 2024 Physics for Economy 2024-02-16 2024-02-16 6 5 15 10.7862/rf.2024.pfe.1 https://journals.prz.edu.pl/pe/article/view/1700 <p>In the present paper the mathematical model, introduced by Crutchfield [1], for video feedback performance is outlined. The two dynamical fractals observed in our video feedback experiment have been described. The first one shows the five-fold symmetry. Its spatial form relates well to the one which was simulated numerically by Andersen [2]. The second one consists of black strips with dislocations and rotates with the velocity of 0.2 1/s^-1. The spatial form looks like a modern picture and its spatial time evolution correlates well with Chopin music.</p> Marian Kuźma Paweł Bałuka Copyright (c) 2024 Physics for Economy 2024-05-27 2024-05-27 6 17 30 10.7862/rf.2024.pfe.2 https://journals.prz.edu.pl/pe/article/view/1669 <p>In the article we present the current state of research on triglycine sulfate (TGS) – one of the flagship materials used in active thermal detectors of infrared radiation (IR). A description of the second-order phase transition in TGS is provided. The methods for measuring the relevant electrical parameters of IR sensors based on TGS are presented, focusing on their application in thermal detection of IR radiation. The article is based on available literature and the results of our own research.</p> Mariusz Trybus Tomasz Copyright (c) 2024 Physics for Economy 2024-07-24 2024-07-24 6 31 45 10.7862/rf.2024.pfe.3