31. Preparation of façade panels based on alkali-activated waste mineral wool, their characterization and durability aspectsMajda Pavlin, Barbara Horvat, Vilma Ducman, 2022, izvirni znanstveni članek Povzetek: Mineral wool is a widely used insulation material and one of the largest components of construction and demolition waste, yet it mainly ends up in landfills. In this work, we explored the potential recycling of waste stone wool in the pilot production of alkali-activated façade panels. The current work shows mechanical properties, SEM-EDS and mercury intrusion porosimetry analyses for three different mix designs used for the preparation of façade panels. They are all composed of waste stone wool and differ in the amount of co-binders (local slag, lime, metakaolin and/or fly ash) selected by the preliminary studies. In this study, co-binders were added to increase early strength and improve the mechanical properties and freeze-thaw resistance. The mechanical properties of each were measured up to 256 days, different durability tests were executed, and, by evaluating the mechanical properties, microstructure and workability of the mortar, the most suitable mix was selected to be used for pilot production. In addition, the leaching test of the selected mixture showed no exceeded toxic trace elements and therefore got classified as non-hazardous waste after its use. Ključne besede: alkali activation, waste mineral wool, SEM, XRF, XRD, mechanical strength Objavljeno v DiRROS: 19.06.2023; Ogledov: 352; Prenosov: 147 Celotno besedilo (1,27 MB) Gradivo ima več datotek! Več... |
32. The preparation and characterization of low-temperature foams based on the alkali activation of waste stone woolMajda Pavlin, Barbara Horvat, Mark Češnovar, Vilma Ducman, 2022, izvirni znanstveni članek Povzetek: Waste mineral wool represents a huge amount of construction and demolition waste that is still not adequately returned into the value chain but needs to be landfilled. In the present study, waste stone wool (SW) was evaluated for the preparation of alkali-activated foams. For this purpose SW was milled and sieved below 63 μm, then the activator (sodium silicate) and different amounts of foaming agent (hydrogen peroxide, H2O2), varying between 1 wt% and 3 wt%, were added to the slurry and cured in moulds at an elevated temperature (70 ◦ C) for three days. In this way, foamed, highly porous materials were obtained whose density and mechanical properties were influenced by the amount of foaming agent used. The densities obtained ranged between 1.4 and 0.5 g/cm3, with corresponding mechanical properties of between 12.6 and 1.5 MPa and total porosities in the range 37.8–78.6%, respectively. In the most porous samples with the total porosity of 78.6%, a thermal conductivity of 0.092 W/(m∙K) was confirmed. The study confirmed the suitability of waste mineral wool (in our case SW) as a precursor for alkali-activated foams with potential use in the construction sector or other industrial applications. Ključne besede: alkali activation, waste mineral wool, mechanical strength, open access, alkalijska aktivacija, odpadna volna, SEM, XRF, XRD, mehanska trdnost, odprti dostop Objavljeno v DiRROS: 19.06.2023; Ogledov: 295; Prenosov: 219 Celotno besedilo (9,47 MB) Gradivo ima več datotek! Več... |
33. Clay rich river sediments calcined into precursors for alkali activated materialsLea Žibret, Wolfgang Wisniewski, Barbara Horvat, Mojca Božič, Boštjan Gregorc, Vilma Ducman, 2023, izvirni znanstveni članek Povzetek: Alkali activated materials (AAMs), a potential alternative to cement-based products or ceramics, can incorporate large amounts of currently landfilled aluminosilicate rich materials such as calcined clay-rich river sediments collected at hydropower plant dams. Untreated fresh sediment and untreated aged sediment intended to serve as AAM precursors were calcined to increase their amorphous content, then activated by Na or K-based silicate or hydroxide solutions and cured at 60 ◦C for three days.
Up to 30 mass % (ma%) of fly ash (FA) or ladle slag (LS) increased the mechanical performance. The phase composition and microstructure are analyzed using X-ray diffraction, fourier-transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy and mercury intrusion porosimetry to gain further insight into how the additives influence the final properties of the resulting AAMs. The main crystalline components of the prepared AAMs are quartz, illite/muscovite and feldspar. The amorphous content reaches up to 52.5 ma% in the Na-activated AAMs and up to 48.8 ma% in K-activated AAMs. The acquired results confirm the suitability of the investigated sediments as sole precursors for AAMs. The mechanical properties of the AAMs can be improved by adding FA and/or LS. Ključne besede: sediments, alkali activated materials, properties Objavljeno v DiRROS: 30.05.2023; Ogledov: 341; Prenosov: 257 Celotno besedilo (4,71 MB) Gradivo ima več datotek! Več... |
34. Dopolnilno obsevanje po ohranitveni operaciji raka dojk s sočasnim dodatkom doze na ležišče tumorja : izidi zdravljenjaMitja Anžič, Jasenka Gugić Kevo, Andreja Gojkovič Horvat, Danijela Golo, Maja Ivanetič Pantar, Tanja Marinko, Marija Snežna Paulin-Košir, Ivica Ratoša, 2022, objavljeni povzetek strokovnega prispevka na konferenci Ključne besede: onkologija, rak dojke, kemoterapija Objavljeno v DiRROS: 27.01.2023; Ogledov: 437; Prenosov: 109 Celotno besedilo (45,74 KB) |
35. Trastuzumab emtanzin in pooperativno obsevanje po operaciji raka dojk : preliminarni rezultati akutne toksičnosti sočasnega zdravljenjaEva Pribožič, Tina Pavlin, Mitja Anžič, Andreja Gojkovič Horvat, Maja Ivanetič Pantar, Danijela Golo, Jasenka Gugić Kevo, Marija Snežna Paulin-Košir, Tanja Marinko, Simona Borštnar, Anja Kovač, Ivica Ratoša, 2022, objavljeni povzetek strokovnega prispevka na konferenci Ključne besede: onkologija, rak dojke, kemoterapija Objavljeno v DiRROS: 27.01.2023; Ogledov: 520; Prenosov: 120 Celotno besedilo (39,40 KB) |
36. Pomen PIK3CA aktivirajočih mutacij za izid bolezni pri bolnicah z invazivnim lobularnim karcinomom dojke, zdravljenih z dopolnilno endokrino terapijoDomen Ribnikar, Valentina Jerič Horvat, Ivica Ratoša, Zachary Veitch, Biljana Grčar-Kuzmanov, Srdjan Novaković, Erik Langerholc, Maja Pohar Perme, Eitan Amir, Boštjan Šeruga, 2022, objavljeni povzetek strokovnega prispevka na konferenci Ključne besede: onkologija, rak dojke, kemoterapija Objavljeno v DiRROS: 27.01.2023; Ogledov: 466; Prenosov: 122 Celotno besedilo (46,13 KB) |
37. Vpliv opustitve dopolnilne kemoterapije na preživetje bolnic z zgodnjim ER+/HER2+ rakom dojkValentina Jerič Horvat, Damjan Manevski, Barbara Gazić, Primož Drev, Domen Ribnikar, Erika Matos, Boštjan Šeruga, 2022, objavljeni povzetek strokovnega prispevka na konferenci Ključne besede: onkologija, rak dojke, kemoterapija Objavljeno v DiRROS: 27.01.2023; Ogledov: 434; Prenosov: 115 Celotno besedilo (47,33 KB) |
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39. Smernice za zdravljenje bolnikov z rakom požiralnika in ezofagogastričnega stika (EGS)Franc Anderluh, Marko Boc, Goran Gačevski, Gorana Gašljević, Samo Horvat, Nežka Hribernik, Marija Ignjatović, Ana Jeromen, Jera Jeruc, Peter Korošec, Tanja Mesti, Srdjan Novaković, Irena Oblak, Janja Ocvirk, Martina Reberšek, Nada Rotovnik-Kozjek, Matevž Srpčič, Ajra Šečerov Ermenc, Borut Štabuc, Vaneja Velenik, Neva Volk, Vesna Zadnik, 2022, slovar, enciklopedija, leksikon, priročnik, atlas, zemljevid Ključne besede: rak požiralnika, rak ezofagogastritičnega stika, smernice, zdravljenje Objavljeno v DiRROS: 07.09.2022; Ogledov: 768; Prenosov: 285 Celotno besedilo (3,50 MB) Gradivo ima več datotek! Več... |
40. Late blight resistance conferred by Rpi-Smira2/R8 in potato genotypes in vitro depends on the genetic backgroundEva Blatnik, Marinka Horvat, Sabina Berne, Miha Humar, Peter Dolničar, Vladimir Meglič, 2022, izvirni znanstveni članek Ključne besede: potato, potato genotype, potato R8 genotypes, in vitro infection, late blight, resistant cultivars, oomicete, Sárpo Mira Objavljeno v DiRROS: 01.09.2022; Ogledov: 517; Prenosov: 187 Celotno besedilo (4,07 MB) |