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14. Real-time monitoring and analyses of sensory data integrated into the bim platformStanislav Lenart, Veljko Janjić, Uros Jovanovic, Rok Vezočnik, 2021, objavljeni znanstveni prispevek na konferenci Povzetek: Bridges and tunnels, crucial elements of the railway infrastructure, are exposed to various types of deterioration processes. Their condition is a subject of monitoring, as it is important to collect as much as possible information in every life cycle phase to reliably predict their future performance. An enormous quantity of monitoring data is generated during the whole life cycle of these assets. EU funded Shift2Rail research project Assets4Rail which is focusing on measuring, monitoring, and data handling for railway assets, as data management is as important as their generation. This paper presents the major outcomes of the Assets4Rail project and its application to infrastructure projects.
Ključne besede: monitoring, information management, BIM, information management, bridge, tunnel, Assets4Rail
Objavljeno v DiRROS: 23.02.2024; Ogledov: 250; Prenosov: 169
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15. Triple synchronous cancers : a medical and ethical problemLučka Debevec, Rok Cesar, Izidor Kern, 2007, izvirni znanstveni članek Povzetek: Background. In a patient with suspicious synchronous multiple tumours, there are limited possibilities for effective therapy. Therefore, the decision for invasive diagnostics and precise staging of tumours is questionable, especially in elderly patients suitable only for symptomatic therapy. Case report. A 78-year-old man with hypertension and angina pectoris was admitted to the hospital due to syncope. Two primary lung tumours and a kidney tumour were detected by imaging investigation. The patient refused invasive diagnostics and left the hospital. After 19 months he was readmitted in an impaired clinical condition and subsequently died of bronchopneumonia. The autopsy revealed squamous cell carcinoma of the right upper lobe with metastases to regional lymph nodes and to the brain, small-cell carcinoma of the left upper lobe with metastases to regional lymph nodes and to the spleen,and clear-cell kidney carcinoma with multiple metastases to the lungs. All tumours were necrotizing, and therefore we assumed that any attempt at specific therapy would have been ineffective. Conclusions. In an elderly patient with advanced lung tumors and suspicious synchronous triple cancers, the "wait and see" option can be suitable.
Objavljeno v DiRROS: 22.02.2024; Ogledov: 255; Prenosov: 51
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18. 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: 264; Prenosov: 92
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19. Vehicle–bridge interaction modelling using precise 3D road surface analysisMaja Kreslin, Peter Češarek, Aleš Žnidarič, Darko Kokot, Jan Kalin, Rok Vezočnik, 2024, izvirni znanstveni članek Povzetek: Uneven road surfaces are the primary source of excitation in the dynamic interaction between a bridge and a vehicle and can lead to errors in bridge weigh-in-motion (B-WIM) systems. In order to correctly reproduce this interaction in a numerical model of a bridge, it is essential to know the magnitude and location of the various roadway irregularities. This paper presents a methodology for measuring the 3D road surface using static terrestrial laser scanning and a numerical model for simulating vehicle passage over a bridge with a measured road surface. This model allows the evaluation of strain responses in the time domain at any bridge location considering different parameters such as vehicle type, lateral position and speed, road surface unevenness, bridge type, etc. Since the time domain strains are crucial for B-WIM algorithms, the proposed approach facilitates the analysis of the different factors affecting the B-WIM results. The first validation of the proposed methodology was carried out on a real bridge, where extensive measurements were performed using different sensors, including measurements of the road surface, the response of the bridge when crossed by a test vehicle and the dynamic properties of the bridge and vehicle. The comparison between the simulated and measured bridge response marks a promising step towards investigating the influence of unevenness on the results of B-WIM.
Ključne besede: interakcija vozilo in most, terestično lasersko skeniranje, neravnost vozišča, numerično modeliranje
Objavljeno v DiRROS: 26.01.2024; Ogledov: 363; Prenosov: 125
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20. Characterisation of a 3D-printed alkali-activated material based on waste mineral wool at room and elevated temperaturesMajda Pavlin, Barbara Horvat, Romana Cerc Korošec, Rok Capuder, Lidija Korat, Vilma Ducman, 2024, izvirni znanstveni članek Ključne besede: recycling, alkalijsko aktivirani materiali, 3D print, mineralna volna
Objavljeno v DiRROS: 25.01.2024; Ogledov: 365; Prenosov: 172
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