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92. Measurements of bridge dynamic amplification factor using bridge weigh-in-motion dataJan Kalin, Aleš Žnidarič, Andrej Anžlin, Maja Kreslin, 2022, izvirni znanstveni članek Povzetek: The dynamic component of bridge traffic loading is commonly taken into account with a Dynamic Amplification Factor (DAF)—the ratio between the dynamic and static load effects on a bridge. In the design codes, this factor is generally more conservative than in reality. Recently a new method of cal- culation of this factor had been developed. Data from 15 different bridges have been analysed since then and this paper presents the results of the analyses. The background for Bridge Weigh-in-Motion is given, and the most recent method for DAF calculation is described. The sites from which the data originated are presented, and the selection of data discussed. The results of the analyses are presented and discussed and some examples of DAF calculations are shown. Data from the considered sites have invariably demonstrated a DAF decrease with increasing axle load. This is a significant result, especially for assessment of existing structures, since it is beneficial to use measured structural param- eters to optimise structural analysis.
Ključne besede: bridge loads, bridge weigh-in-motion, dynamic amplication factor, dynamic analysis, measurement, traffic loading
Objavljeno v DiRROS: 14.07.2023; Ogledov: 351; Prenosov: 183
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93. Microstructural characteristics of belite–sulfoaluminate cement clinkers with bottom ashLea Žibret, Andrej Ipavec, Sabina Dolenec, 2022, izvirni znanstveni članek Povzetek: The incorporation mechanism of impurities derived from raw materials into a belite-sulfoaluminate cement clinker with bottom ash was investigated in two raw mixtures. Alkalis lowered the sintering temperature by 50 °C. Ti stabilized β belite and prevented the formation of γ-belite. Sodalite solid solution showed an incomplete substitution of Si by Al. At a higher Ti content ferrite solid solution trended towards perovskite composition. Although calcium sulfoaluminate only fully developted at 1300 °C, the clinkers sintered at 1200 °C were the most reactive, as the presence of anhydrite at 1200 °C accelerated early hydration. Clinker reactivity decreased with an increase in sintering temperature.
Ključne besede: BSCA clinker, belite, calcium sulfoaluminate, secondary raw materials, microstructure, reactivity
Objavljeno v DiRROS: 03.07.2023; Ogledov: 451; Prenosov: 207
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94. Poročilo o spremljanju stanja gozdov za leto 2022 : vsebinsko poročilo o spremljanju stanja gozdov v skladu s Pravilnikom o varstvu gozdov (2009)Mitja Ferlan, Andrej Grah, Janez Kermavnar, Nike Krajnc, Lado Kutnar, Nikica Ogris, Anže Martin Pintar, Matej Rupel, Mitja Skudnik, Urša Vilhar, Daniel Žlindra, 2023, končno poročilo o rezultatih raziskav Ključne besede: varstvo gozdov, monitoring, stanje gozdov, zdravstveno stanje krošenj, popis povzročiteljev poškodb, meteorološke meritve, osutost dreves, poročila, Slovenija
Objavljeno v DiRROS: 29.06.2023; Ogledov: 476; Prenosov: 503
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95. Phytosociological description of the dwarf mountain pine shrub community (Amelanchiero ovalis-Pinetum mugo) in the valleys of the Slovenian AlpsIgor Dakskobler, Mateja Cojzer, Andrej Rozman, 2023, izvirni znanstveni članek Povzetek: We have expanded our knowledge of the localities, sites and distribution of the Amelanchiero ovalis-Pinetum mugo association in the Slovenian Alps. Based on phytocenological analyses, the shrub association belonging to the forest vegetation type Alpine mountain pine scrub was divided into two subassociations: peucedanetosum oreoselini and hylocomiadelphetosum triquetri. We also described four variants within the latter association.
Ključne besede: phytosociology, synsystematics, Pinus mugo, Natura 2000, Triglav National Park, Topla Landscape Park, Slovenia
Objavljeno v DiRROS: 27.06.2023; Ogledov: 1233; Prenosov: 533
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96. Razvoj in karakterizacija mišjega modela za študije HPV-pozitivnega raka glave in vratuŽiva Modic, Maja Čemažar, Boštjan Markelc, Andrej Cör, Gregor Serša, Simona Kranjc Brezar, Tanja Jesenko, 2023, objavljeni povzetek znanstvenega prispevka na konferenci Ključne besede: miši, rak glave in vratu, gensko zdravljenje
Objavljeno v DiRROS: 19.06.2023; Ogledov: 400; Prenosov: 173
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98. Organoidi glioblastoma razkrivajo odpornost na standardno terapijoBernarda Majc, Anamarija Habič, Marta Malavolta, Aleksander Sadikov, Andrej Porčnik, Jernej Mlakar, Tamara Lah Turnšek, Barbara Breznik, Metka Novak, 2023, objavljeni povzetek znanstvenega prispevka na konferenci Ključne besede: glioblastom, organoidi, standardna terapija, model ex vivo, biologija raka
Objavljeno v DiRROS: 16.06.2023; Ogledov: 421; Prenosov: 150
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99. |
100. Flood vulnerability study of a roadway bridge subjected to hydrodynamic actions, local scour and wood debris accumulationMirko Kosič, Andrej Anžlin, Valentina Bau', 2022, izvirni znanstveni članek Povzetek: The increased occurrence and intensity of flooding events have represented a real threat to bridge reliability and end-user safety. As flood vulnerability assessment is a valuable tool for enhancing the resilience of bridges to climate change, it is of interest to push the development of such methods. To this end, a computationally efficient methodology to assess the flood vulnerability of a bridge was developed and implemented in a case study. A particular focus was devoted to modelling wood debris loads on the bridge pier, for which two different approaches were implemented. The first is a standards-based approach, whereas the second is based on up-to-date research data. The results indicate that the second approach is less conservative as it leads up to a 40% higher exceedance probability for the considered limit states. The interaction between wood debris loads and local scour was also examined and proved to have a relevant impact on the vulnerability of the bridge. These results highlight the shortcomings of the existing standards in providing accurate results. It is perceived that not only will the new quantitative tool be valuable in ensuring optimal bridge design, but it will also be beneficial for assessing bridge risk mitigation measures.
Ključne besede: flooding, vulnerability, wood debris, local scour, hydrodynamic load, stochastic approach, bridges, open access
Objavljeno v DiRROS: 31.05.2023; Ogledov: 401; Prenosov: 211
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