31. Closing data gaps and paving the way for pan-European fire safety efforts : Part IMartina Manes, Mohamad El Houssami, Richard Campbell, Ana Sauca, David Rush, Anja Hofmann, Petra Andersson, Peter Wagner, Sergei Sokolov, Johanna Veeneklaas, Margrethe Kobes, Dirk Oberhagemann, Nicola Rupp, Grunde Jomaas, Friedrich Grone, Patrick van Hees, Eric Guillaume, 2023, original scientific article Abstract: The analysis of the current state of fire statistics and data collection in Europe and other countries is needed to increase awareness of how fire incidents affect buildings and to support pan-European fire prevention and fire mitigation mea- sures. The terminology and data collected regarding fire incidents in buildings in the EU Member States were mapped to obtain meaningful datasets to determine common terminology, collection methodology, and data interpretation system. An extensive literature review showed that fire data collection systems have been instrumental in informing firefighting strategies, evidence-based planning, prevention, and educational programmes. Differences and similarities between fire data collection systems were also investigated. The amount and quality of the information in fire statistical recording systems appear to be influenced by the complexity and structure with which the data are collected. The analysis also examined the existing fire statistics in the EU Member States and a few other countries. Finally, a detailed investigation of the number of fires, fire deaths, and injuries from 2009 to 2018 in several countries was examined based on data from a report by CTIF. The trends showed differences attributable to the existing fire statistical practices in terms of terminology and data collection, and interpretation. Part II proposes a common terminology for selected fire statistical variables. The results provide relevant information regarding fire safety at the European level and should be used to guide the development of more uniform fire statistics across Europe.
Keywords: fire statistics, fire incidents, fire statistical variable, terminology, data collection, data interpretation
Published in DiRROS: 13.11.2023; Views: 440; Downloads: 120
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36. Rotational dynamics of a protein under shear flow studied by the eckart frame formalismPetra Papež, Franci Merzel, Matej Praprotnik, 2023, original scientific article Keywords: energy, kinetics, molecules, protein structure, rotational dynamics, molecules, protein structure, rotational dynamics
Published in DiRROS: 06.09.2023; Views: 344; Downloads: 183
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37. Vpliv vpetosti med preiskavo obnašanja nearmiranih zidov pri potresni obtežbiPetra Triller, Matija Gams, Miha Tomaževič, 2020, original scientific article Abstract: V prispevku so predstavljene obsežne eksperimentalne raziskave obnašanja večetažnih zidanih strižnih sten z odprtinami pri potresni obtežbi. Preiskali smo odziv 3-etažnega preizkušanca v naravnem merilu na potresno obtežbo, s katero smo preučevali odziv tipične 5-etažne zidane stavbe, grajene na območju Slovenije in njene širše okolice v času pred letom 1964 (pred prvimi potresni predpisi). Vzporedno smo opravili osem cikličnih strižnih preiskav posameznih zidov pri štirih tipih robnih pogojev. Z analizo rezultatov obsežnih meritev sil in deformacij na površini večetažnih strižnih sten smo ovrednotili vpliv vertikalnih in horizontalnih elementov strižne stene na posamezni slop ter iskali najustreznejši tip robnih pogojev za simulacijo potresnega odziva v preiskavi posameznega zidnega slopa.
Keywords: nearmirano zidovje, ciklične strižne preiskave, opečni votlak, preiskava v naravnem merilu, optični sistem za merjenje deformacij
Published in DiRROS: 05.09.2023; Views: 270; Downloads: 107
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38. Deformable polyurethane joints and fibre grids for resilient seismic performance of reinforced concrete frames with orthoblock brick infillsTheodoros Rousakis, Alper Ilki, Arkadiusz Kwiecień, Alberto Viskovic, Matija Gams, Petra Triller, Bahman Ghiassi, Andrea Benedetti, Zoran Rakicevic, Camilla Colla, Omer Faruk Halici, BogusŁaw Zając, Łukasz Hojdys, Piotr Krajewski, Fabio Rizzo, Vachan Vanian, Anastasios Sapalidis, Efthimia Papadouli, Aleksandra Bogdanovic, 2020, original scientific article Abstract: The behaviour of reinforced concrete frames with masonry wall infills is influenced a lot by the stiffness and strength difference between the frame and the infill, causing early detrimental damage to the infill or to the critical concrete columns. The paper reports the results from shake table seismic tests on a full-scale reinforced concrete (RC) frame building with modified hollow clay block (orthoblock brick) infill walls, within INMASPOL SERA Horizon 2020 project. The building received innovative resilient protection using Polyurethane Flexible Joints (PUFJs) made of polyurethane resin (PU), applied at the frame-infill interface in different schemes. Further, PUs were used for bonding of glass fibre grids to the weak masonry substrate to form Fibre Reinforced Polyurethanes (FRPUs) as an emergency repair intervention. The test results showed enhancement in the in-plane and out-of-plane infill performance under seismic excitations. The results confirmed remarkable delay of significant infill damages at very high RC frame inter-story drifts as a consequence of the use of PUFJs. Further, the PUFJ protection enabled the resilient repair of the infill even after very high inter-story drift of the structure up to 3.7%. The applied glass FRPU system efficiently protected the damaged infills against collapse under out-of-plane excitation while they restored large part of their in-plane stiffness.
Keywords: polyurethane, flexible joint, RC column, brick infill, shake table, resilience
Published in DiRROS: 05.09.2023; Views: 355; Downloads: 146
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39. Chemical recycling of flexible polyurethane foams by aminolysis to recover high-quality polyolsMaja Grdadolnik, Blaž Zdovc, Ana Drinčić, Özgün Can Önder, Petra Utroša, Susana Garcia Ramos, Enrique Dominguez Ramos, David Pahovnik, Ema Žagar, 2023, original scientific article Published in DiRROS: 28.08.2023; Views: 390; Downloads: 180
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40. Tribocorrosive study of new and in vivo exposed nickel titanium and stainless steel orthodontic archwiresTadeja Kosec, Petra Močnik, Uroš Mezeg, Andraž Legat, Maja Ovsenik, Monika Jenko, John T. Grant, Jasmina Primožič, 2020, original scientific article Abstract: The surface, corrosion and wear properties of new and in vivo exposed nickel titanium (NiTi) and stainless steel (SS) archwires used in orthodontic treatment were investigated. Electrochemical and tribo-electrochemical tests in artificial saliva were performed in order to define corrosion properties and to estimate wear rate of new and in vivo exposed NiTi and SS archwires. The surface chemical analysis of the passive film on the NiTi and SS archwires before and after tribocorrosion tests was performed by Auger Electron Spectroscopy (AES). In vivo exposed NiTi and SS archwires had better electrochemical properties than new archwires due to the protective nature of oral deposits. Total wear and coefficients of friction were higher among in vivo exposed archwires and higher in NiTi archwires in comparison to SS archwires. The estimated thickness of the TiO2 passive film on as-received NiTi is 8 nm, while the passive Cr2O3 film on as-received SS is just 1–2 nm. On in vivo exposed NiTi archwire, a 60–80 nm thick organic film/dental plaque was observed, and on SS, it was thinner, at about 60 nm. This research shows the importance of combining AES with electrochemical testing, to characterize tribocorrosive properties of NiTi and SS orthodontic archwires.
Keywords: archwires, NiTi, stainless steel, wear
Published in DiRROS: 24.08.2023; Views: 295; Downloads: 128
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