51. Atmosphere - vegetation - soil interactions in a climate change context; impact of changing conditions on engineered transport infrastructure slopes in EuropeAnh Minh Tang, P. N. Hughes, T. A. Dijkstra, Amin Askarinejad, Mihael Brenčič, Yu Jun Cui, J. J. Diez, T. Firgi, Beata Gajewska, F. Gentile, G. Grossi, C. Jommi, F. Kehagia, E. Koda, H. W. ter Maat, Stanislav Lenart, S. Lourenco, M. Oliveira, P. Osinski, Sarah Springman, Ross Stirling, D. G. Toll, Ursula J. Van Beek, 2018, izvirni znanstveni članek Povzetek: In assessing the impact of climate change on infrastructure, it is essential to consider the interactions between the atmosphere, vegetation and the near-surface soil. This paper presents an overview of these processes, focusing on recent advances from the literature and those made by members of COST Action TU1202 - Impacts of climate change on engineered slopes for infrastructure. Climate- and vegetation-driven processes (suction generation, erosion, desiccation cracking, freeze-thaw effects) are expected to change in incidence and severity, which will affect the stability of new and existing infrastructure slopes. This paper identifies the climate- and vegetation-driven processes that are of greatest concern, the suite of known unknowns that require further research, and lists key aspect that should be considered for the design of engineered transport infrastructure slopes in the context of climate change.
Objavljeno v DiRROS: 12.12.2023; Ogledov: 157; Prenosov: 80
 Celotno besedilo (2,29 MB)
Gradivo ima več datotek! Več... |
52. Selective glucose oxidation to glucaric acid using bimetallic catalysts : lattice expansion or electronic structure effect?Žan Lavrič, Janvit Teržan, Ana Kroflič, Janez Zavašnik, Joanna E. Olszówka, Štefan Vajda, Matej Huš, Miha Grilc, Blaž Likozar, 2024, izvirni znanstveni članek Povzetek: Our study presents a comprehensive approach for the selective oxidation of glucose to glucaric acid (GA) by heterogeneous catalysis. We have synthesized and characterized Au/ZrO2, AuCu/ZrO2 and AuPt/ZrO2 catalysts using X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and oxygen pulse chemisorption (OPS) techniques. Combining experimental observations with in-depth density functional theory (DFT) studies, we found that bimetallic catalysts form alloys, which exhibit different characteristics than monometallic counterparts for the given reaction. We performed batch reactions, varying temperature and oxygen pressure, and used the data to construct a predictive microkinetic model. As it turned out, AuPt/ZrO2 showed the highest selectivity, yielding 32 % of GA at 100 °C and 30 barg O2. Our results provide valuable insights for the developing of efficient catalysts and point out the bottlenecks for the oxidation of glucose to GA.
Ključne besede: glucaric acid, glucose oxidation, catalyst characterization, density functional theory, microkinetic modelling
Objavljeno v DiRROS: 06.12.2023; Ogledov: 216; Prenosov: 123
Celotno besedilo (2,73 MB)
Gradivo ima več datotek! Več... |
53. Presejanje za odkrivanje raka dojkKristijana Hertl, Miljeva Rener, Tomaž Vargazon, Maksimiljan Kadivec, Maja Podkrajšek, Maja Marolt-Mušič, Simona Jereb, Miha Čavlek, 2004, objavljeni znanstveni prispevek na konferenci Povzetek: Izhodišča. Rak dojk (RD) je zaradi visoke incidence v razvitem svetu in v Sloveniji velik zdravstveni in ekonomski problem. Redno mamografsko pregledovanje asimptomatskih žensk (presejanje oz. screening), starih 50-69 let dolgoročno zmanjša umrljivost za RD, ker odkrije raka v zgodnejši fazi. V Sloveniji presejanje ni organizirano tako kot v nekaterih evropskih državah, ampak je oportunistično, ko ženske preventivno prihajajo v centre za bolezni dojk (CBD) na pregled po priporočilu zdravnika ali po lastni želji. Za kakovost delovanja centri nimajo enotnih državnih smernic in nad njihovim delovanjem ni nadzora. Zaključki. Uspešnost presejanja je odvisna od izbora skupine primerne starosti, udeležbe, intervala med posameznimi krogi presejanja, števila projekcij, dvojnega odčitovanja, kontrole kakovosti ter rednega beleženja in analize doseženih rezultatov. Glavne pomanjkljivosti presejanja so napačno pozitivni in napačno negativni izvidi, izpostavljenost ionizirajočem sevanju ter prediagnosticiranost.
Objavljeno v DiRROS: 01.12.2023; Ogledov: 178; Prenosov: 61
Celotno besedilo (639,35 KB) |
54. Experimental investigation of the axial strength of glued-in rods in cross laminated timberBoris Azinović, Erik Serrano, Miha Kramar, Tomaž Pazlar, 2018, izvirni znanstveni članek Povzetek: This paper presents results from an experimental assessment of glued-in rods in cross laminated timber (CLT). For the purposes of the study more than 60 pull-pull tests were performed, where the specimens varied in terms of bonded-in length (from 80 to 400 mm), rod diameter (16-24 mm) and rod-to-grain angle (parallel and perpendicular). Several different failure modes that are not common for other applications of glued-in rods (e.g., a failure between CLT layers) were obtained for the analysed CLT specimens. It was found that these failure mechanisms can substantially influence the obtained ultimate tension loads. At the end, the experimental results were compared with empirical and semi-empirical equations for estimating the pull-out strength of glued-in rods in structural timber and glulam. The comparison showed that most of the existing equations overestimate the ultimate tension loads for specimens with the rod parallel to the grain and underestimate the ultimate tension load for specimens with the rod perpendicular to the grain. The results vary because the possible CLT failure modes were not included in previous studies. Further studies are proposed to improve the equations for glued-in rods in CLT.
Ključne besede: glued-in rods, cross laminated timber (CLT), pull-pull experiment, glued-in length, rod-to-grain angle, failure mechanisms in CLT
Objavljeno v DiRROS: 29.11.2023; Ogledov: 214; Prenosov: 175
Celotno besedilo (4,13 MB)
Gradivo ima več datotek! Več... |
55. Obsevanje ginekoloških tumorjevBarbara Šegedin, Helena Barbara Zobec Logar, Manja Šešek, Ana Perpar, Blaž Grošelj, Miha Oražem, 2023, strokovna monografija Ključne besede: teleterapija, brahiterapija, prehrana, kemoterapija, stranski učinki
Objavljeno v DiRROS: 22.11.2023; Ogledov: 337; Prenosov: 102
Celotno besedilo (1,18 MB) |
56. Monitoring the galvanic corrosion of copper–steel coupling in bentonite slurry during the early oxic phase using coupled multielectrode arraysTadeja Kosec, Miha Hren, Klara Prijatelj, Bojan Zajec, Nina Gartner, Andraž Legat, 2023, izvirni znanstveni članek Povzetek: In the case of a two-part container for spent nuclear fuel, consisting of an iron-based inner structure with a copper coating, the potential perforation of copper through minor damage may result in intensive galvanic corrosion between copper and steel. The present work focuses on the corrosion of steel galvanically coupled to copper and exposed to a slightly saline environment under oxic conditions. The electrochemical processes on individual electrodes were monitored by coupled multielectrode arrays (CMEAs). The CMEAs were either in contact with groundwater saturated with bentonite or immersed in groundwater only. Very high galvanic corrosion currents were detected between carbon steel and pure copper in the early oxic phase. Additionally, the use of CMEAs further made it possible to monitor the distribution of cathodic currents around the steel electrode, which behaved anodically. Various microscopy and spectroscopy techniques were applied to identify the modes of corrosion and the type of corrosion products present at the end of the period of exposure.
Ključne besede: copper, steel, bentonite, Aspö groundwater, coupled multi electrode array, electrochemical properties, Raman analysis, corrosion
Objavljeno v DiRROS: 16.11.2023; Ogledov: 351; Prenosov: 59
Celotno besedilo (1,66 MB)
Gradivo ima več datotek! Več... |
57. Delavnica projekta LIFE SySTEMiC za lovce, lovske načrtovalce in raziskovalce v dinarsko jelovo-bukovih gozdovih, Mašun in Leskova dolina, 12. in 13. 10. 2023 : poročiloBoris Rantaša, Kristina Sever, Andrej Breznikar, Tjaša Baloh, Natalija Dovč, Evgen Ostanek, Peter Krma, Anton Smrekar, Matija Stergar, Miha Marenče, Hojka Kraigher, 2023, druge monografije in druga zaključena dela Ključne besede: gozdovi, genetska pestrost, nega gozda, obnova gozda, upravljanje s prostoživečimi živalmi, objedanje, gozdno mladje, ujme, podnebne spremembe
Objavljeno v DiRROS: 08.11.2023; Ogledov: 313; Prenosov: 106
Celotno besedilo (4,34 MB) |
58. Impact of Open-Loop Systems on Groundwater Temperature in NE SloveniaSimona Adrinek, Mitja Janža, Mihael Brenčič, 2023, izvirni znanstveni članek Povzetek: To achieve sustainable and efficient use of shallow geothermal resources, it is important to understand the heat transfer in the subsurface of the planned geothermal system. In the City Municipality of Murska Sobota, NE Slovenia, the use of geothermal open-loop systems has increased in recent years. Their high spatial density raises the question of possible mutual interference between the systems. By compiling geological, hydrogeological, and thermal data, obtained from the monitoring network, fieldwork, and knowledge of regional hydrogeological conditions, we have developed a transient groundwater flow and heat transfer model to evaluate the impact of the open-loop systems on the subsurface and surrounding systems. The transient simulation showed that the thermal state in the observed area is restored over the summer, when the systems are not in operation. Also, the systems do not have significant mutual interference that would affect their efficiency. However, as interest in installing new systems in the area increases, simulations of the thermal plumes of new geothermal systems are needed to ensure sustainable and efficient use of shallow geothermal energy in the future.
Ključne besede: geothermal energy, open-loop system, groundwater heat pump, intergranular aquifer, numerical modelling, thermal plume
Objavljeno v DiRROS: 19.09.2023; Ogledov: 382; Prenosov: 101
Celotno besedilo (36,17 MB) |
59. |
60. |
