1991. Approcci ecosistemici per l'adattamento ai cambiamenti climatici e la riduzione dei rischi: creare sinergie e promuovere il dialogo : conferenza2023, druge monografije in druga zaključena dela Povzetek: Lo scopo della conferenza di apertura del progetto ECO2SMART è promuovere gli approcci ecosistemici (EbA e Eco-DRR) per l’adattamento ai cambiamenti climatici e la riduzione del rischio di catastrofi. Intendiamo raggiungere questo obiettivo presentando buone pratiche di soluzioni sostenibili già implementate, condividendo conoscenze, creando connessioni e promuovendo il dialogo tra le parti interessate. Nel corso della conferenza verranno illustrate le opportunità offerte dal progetto ECO2SMART ed i principali risultati attesi alla fine di questo progetto. Objavljeno v DiRROS: 01.02.2024; Ogledov: 451; Prenosov: 259
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1992. Influence of oil viscosity on the tribological behavior of a laser-textured Ti6Al4V alloyMarjetka Conradi, Aleksandra Kocijan, Bojan Podgornik, 2023, izvirni znanstveni članek Povzetek: Laser texturing with a dimple pattern was applied to modify a Ti6Al4V alloy at the micro level, aiming to improve its friction and wear resistance in combination with oil lubrication to optimize the performance in demanding industrial environments. The tribological analysis was performed on four different dimple-textured surfaces with varying dimple size and dimple-to-dimple distance and under lubrication with three different oils, i.e., T9, VG46, and VG100, to reflect the oil viscosity’s influence on the friction/wear of the laser-textured Ti6Al4V alloy. The results show that the surfaces with the highest texture density showed the most significant COF reduction of around 10% in a low-viscosity oil (T9). However, in high-viscosity oils (VG46 and VG100), the influence of the laser texturing on the COF was less pronounced. A wear analysis revealed that the laser texturing intensified the abrasive wear, especially on surfaces with a higher texture density. For low-texturing-density surfaces, less wear was observed for low- and medium-viscosity oils (T9 and VG46). For medium-to-high-texturing densities, the high-viscosity oil (VG100) provided the best contact conditions and wear results. Overall, reduced wear, even below the non-texturing case, was observed for sample 50–200 in VG100 lubrication, indicating the combined effect of oil reservoirs and increased oil-film thickness within the dimples due to the high viscosity. Ključne besede: oil lubrication, surface modification, Ti-based alloy, tribology Objavljeno v DiRROS: 01.02.2024; Ogledov: 448; Prenosov: 174
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1993. The impact of Al2O3 particles from grit-blasted Ti6Al7Nb (alloy) implant surfaces on biocompatibility, aseptic loosening, and infectionBoštjan Kocjančič, Klemen Avsec, Barbara Šetina, Darja Feizpour, Matjaž Godec, Veronika Kralj-Iglič, Rok Podlipec, Andrej Cör, Mojca Debeljak, John T. Grant, Monika Jenko, Drago Dolinar, 2023, izvirni znanstveni članek Ključne besede: Ti6Al7Nb implant alloy cementless hip endoprostheses, roughness, Al2O3 grit blasting, surface and subsurface implant contamination, cytotoxicity, aseptic loosening, infection, osseointegration Objavljeno v DiRROS: 01.02.2024; Ogledov: 447; Prenosov: 201
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1994. Aspects of bending high-borated austenitic stainless steel sheets for interim storage of spent nuclear fuelJosef Odehnal, Tomáš Studecký, Petra Čejková, Ivana Poláková, Martin Rund, Václav Bruná, Petr Martinek, Pavel Francisko, Črtomir Donik, 2023, izvirni znanstveni članek Ključne besede: interim storage, spent fuel, borated stainless steel, cold working, bending Objavljeno v DiRROS: 01.02.2024; Ogledov: 335; Prenosov: 166
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1995. Influence of precipitation hardening on the mechanical properties of Co-Cr-Mo and Co-Cr-W-Mo dental alloysMarko Sedlaček, Katja Zupančič, Barbara Šetina, Borut Kosec, Matija Zorc, Aleš Nagode, 2023, izvirni znanstveni članek Ključne besede: Co-Cr alloys, microstructure analysis, hardness, wear resistance Objavljeno v DiRROS: 01.02.2024; Ogledov: 439; Prenosov: 237
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1996. Predicting the quality of grain refiners from electrical resistance measurements of aluminumMaja Vončina, Irena Paulin, Jože Medved, Mitja Petrič, 2023, izvirni znanstveni članek Ključne besede: Al-Ti-B grain-refiners, quality, TiB2 particles, Al3Ti particles, electrical resistance measurements Objavljeno v DiRROS: 01.02.2024; Ogledov: 380; Prenosov: 185
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1997. Effects of variated final temperature and workpiece thickness for hot rolling of aluminum alloy EN AW-8011Jakob Kraner, Peter Cvahte, Primož Šuštarič, Tomaž Šuštar, Črtomir Donik, Irena Paulin, Shae K. Kim, Kjung Il Kim, 2023, izvirni znanstveni članek Ključne besede: aluminum alloy, hot rolling, simulations, metallography, mechanical properties Objavljeno v DiRROS: 01.02.2024; Ogledov: 360; Prenosov: 189
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1998. Influence of boron and nitrogen on the machinability, polishability and wear of martensitic stainless steelsMarko Sedlaček, Barbara Šetina, Vesna Žepič Bogataj, Jaka Burja, 2023, izvirni znanstveni članek Ključne besede: martensitic stainless steel, boron, nitrogen, wear, machinability, polishability Objavljeno v DiRROS: 01.02.2024; Ogledov: 394; Prenosov: 166
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1999. Effect of sucrose concentration on streptococcus mutans adhesion to dental material surfacesAnamarija Zore, Franc Rojko, Nives Matijaković Mlinarić, Jona Veber, Aleksander Učakar, Roman Štukelj, Andreja Pondelak, Andrijana Sever Škapin, Klemen Bohinc, 2024, izvirni znanstveni članek Povzetek: Enamel demineralization, known as dental caries, is instigated by the bacterium Streptococcus mutans, which generates acid during carbohydrate metabolism. Among carbohydrates, sucrose is the most cariogenic and capable of biofilm formation. This study aimed to explore and comprehend Streptococcus mutans’ adherence to two prevalent dental material surfaces, i.e., a cobalt–chromium(Co-Cr) alloy and a resin-based composite, under the influence of various sucrose concentrations. To understand bacterial adhesion, the surfaces were characterized using profilometry, tensiometry, and surface charge measurements. Bacterial adhesion was evaluated using scanning electron microscopy and crystal violet dye methods. Results revealed that the composite surface exhibited greater rough-ness compared with the Co-Cr alloy surface. Both surfaces displayed hydrophilic properties and a negative surface charge. Bacterial adhesion experiments indicated lower bacterial adherence to the Co-Cr alloy than to the composite surface before the addition of sucrose. However, the introduction of sucrose resulted in biofilm development on both surfaces, showcasing a similar increase in bacterial adhesion, with the highest levels being observed at a 5% sucrose concentration in the bacterial suspension. In conclusion, the findings suggest sucrose-rich foods could facilitate bacterial adaptation despite less favorable surface characteristics, thereby promoting biofilm formation. Ključne besede: bacterial adhesion, streptococcus mutans, dental material surfaces, sucrose concentration Objavljeno v DiRROS: 31.01.2024; Ogledov: 418; Prenosov: 180
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2000. The influence of different fibres quantity on mechanical and microstructural properties of alkali-activated foamsKatja Traven, Mark Češnovar, Barbara Horvat, Vilma Ducman, 2022, objavljeni znanstveni prispevek na konferenci Povzetek: Alkali activated foams (AAFs) were produced using electric arc furnace steel slag (EAF) and ladle furnace basic slag (LS), obtained from two metallurgical companies in Slovenia. They were activated with a mixture of sodium water glass (Na2SiO3) and solid NaOH and foamed with hydrogen peroxide (H2O2). Pores were stabilized with the addition of Triton as a surfactant. Four types of fibres were added to the studied mixture (polypropylene (PP), polyvinyl-alcohol (PVA), basalt (B), and glass wool (GW)) in five different quantities: 0.5, 1.0, 1.25, 1.5 and 2.0 vol % in order to additionally stabilize the structure and thus improve its mechanical properties. The results of mechanical properties showed, that compressive strength was increased in all 20 specimens, partially due to the increased density as well as to the fibre addition. Flexural strength on the other hand was the most improved in the samples where PP and PVA fibres were added. The samples with the addition of B and GW fibres on the other hand showed only small or no improvement in flexural strength in comparison to the referenced sample. Additionally, the microstructure of used fibres and selected foams was also investigated by the means of SEM analysis. Ključne besede: fibers, alkali activated foams, properties Objavljeno v DiRROS: 31.01.2024; Ogledov: 339; Prenosov: 175
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