1. A protocol for accurate radiochromic film dosimetry using Radiochromic.comIgnasi Méndez Carot, Juan José Rovira-Escutia, Božidar Casar, 2021, original scientific article Abstract: Radiochromic films have many applications in radiology and radiation therapy. Generally, the dosim-etry system for radiochromic film dosimetry is composed of radiochromic films, flatbed scanner, and film analysis soft-ware. The purpose of this work is to present the effectiveness of a protocol for accurate radiochromic film dosimetry using Radiochromic.com as software for film analysis.Materials and methods. Procedures for image acquisition, lot calibration, and dose calculation are explained and analyzed. Radiochromic.com enables state-of-the-art models and corrections for radiochromic film dosimetry, such as the Multigaussian model for multichannel film dosimetry, and lateral, inter-scan, and re-calibration corrections of the response.Results. The protocol presented here provides accurate dose results by mitigating the sources of uncertainty that affect radiochromic film dosimetry. Conclusions. Appropriate procedures for film and scanner handling in combination with Radiochromic.com as software for film analysis make easy and accurate radiochromic film dosimetry feasible. Keywords: radiochromic film, dosimetry, protocol Published in DiRROS: 22.07.2024; Views: 13; Downloads: 4 Full text (1,85 MB) This document has many files! More... |
2. High temperature oxidation of EN AW 7075 aluminium alloyNejc Velikajne, Tilen Balaško, Jaka Burja, Matjaž Godec, Irena Paulin, 2024, published scientific conference contribution Abstract: Aluminium alloys are highly valued for their exceptional strength-to-weight ratio, making them a preferred choice in structural applications. Among these alloys, EN AW 7075 stands out for its superior mechanical properties, finding widespread use in industries such as aerospace, mechanical engineering, and sports equipment. This study investigates the high-temperature oxidation behavior of EN AW 7075 alloy. The gathered results can provide valuable insights into the behavior of the mentioned alloy during the selective laser melting (SLM) process. These results can contribute to a better understanding of how the alloy responds to specific conditions and parameters. SLM is an additive manufacturing technique. The process involves the sequential steps of preheating, melting, and rapid cooling of metal powder. To minimize the influence of oxygen, the build chamber is filled with inert gas. A protective argon atmosphere is continuously maintained. However, despite these precautions, oxidation can still occur, leading to potential issues in the final product. Hence, we examined the oxidation kinetics of the EN AW 7075 alloy in an oxygen atmosphere in the temperature range of 300-500 °C. The findings of this investigation significantly contribute to an understanding of the behavior of the alloy during high-temperature oxidation, particularly for ongoing studies focused on processing Al-Zn-Mg-Cu alloys using the selective laser melting technique. Thermogravimetry was employed to analyze the oxidizing behavior, with three samples subjected to a 6-hour exposure in an oxidizing atmosphere at temperatures of 300, 400, and 500 °C. Surprisingly, no oxidation occurred, as indicated by the negligible and negative changes in mass observed across all samples. Keywords: EN AW 7075, high-temperature oxidation, oxide film, selective laser melting Published in DiRROS: 28.02.2024; Views: 308; Downloads: 126 Full text (897,18 KB) This document has many files! More... |
3. Study of different types of copper electrodes for anodic stripping voltammetric detection of trace metal ionsDomen Obrez, Mitja Kolar, Nikola Tasić, Samo B. Hočevar, 2023, original scientific article Keywords: copper film electrode, copper bulk electrode, copper wire electrode, lead and cadmium, anodic stripping voltammetry Published in DiRROS: 07.08.2023; Views: 436; Downloads: 247 Full text (1,75 MB) This document has many files! More... |
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6. Politizacija kulturnega polja na Slovenskem v obdobju prve Jugoslavije : katoliška in marksistična percepcija avtorske svobodeGašper Mithans, 2020, original scientific article Abstract: V članku je predstavljena politizacija književnosti in filmografije na Sloven-skem v času Kraljevine SHS/Jugoslavije s poudarkom na analizi kulturnih revij in sporih okoli avtonomije avtorjev in urednikov. Ti konflikti so v 30. letih 20. stoletja skoraj po istem modelu povzročili delitve in/ali večja nesoglasja med vsemi tremi večjimi političnimi tabori in v njih: katoliškem, liberalnem in marksističnem. Med notranjimi obračuni z vključitvijo širše javnosti izstopa prelom med katoliško de-snico in levico prav na kulturnem polju ob objavi Kocbekove razprave o španski državljanski vojni v Domu in svetu. S strani večine kulturnikov podcenjena filmografija se je tudi na Slovenskem % čeprav s precejšnjim zamikom v primerjavi z drugimi evropskimi narodi % pred in med drugo svetovno vojno (ter po njej) uporabila kot propagandno sredstvo političnega katolicizma in tudi marksistov oziroma v Osvobodilni fronti. Keywords: katolicizem, marksizem, književnost, film, sociologija kulture, kulturna politika, Kraljevina SHS, zgodovinski pregledi Published in DiRROS: 28.03.2022; Views: 778; Downloads: 455 Full text (213,55 KB) This document has many files! More... |