201. Poročilo o preskusu št.: LVG 2023-038 : vzorec št. 2023/00179Ana Brglez, Zina Devetak, Barbara Piškur, 2023, expertise, arbitration decision Keywords: varstvo gozdov, morfološke analize, Fusarium circinatum, borov smolasti rak, Pinus, bor
Published in DiRROS: 20.06.2023; Views: 304; Downloads: 0 |
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203. Preparation of façade panels based on alkali-activated waste mineral wool, their characterization and durability aspectsMajda Pavlin, Barbara Horvat, Vilma Ducman, 2022, original scientific article Abstract: 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.
Keywords: alkali activation, waste mineral wool, SEM, XRF, XRD, mechanical strength
Published in DiRROS: 19.06.2023; Views: 338; Downloads: 146
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204. 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, original scientific article Abstract: 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.
Keywords: alkali activation, waste mineral wool, mechanical strength, open access, alkalijska aktivacija, odpadna volna, SEM, XRF, XRD, mehanska trdnost, odprti dostop
Published in DiRROS: 19.06.2023; Views: 270; Downloads: 211
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205. Ali visoko maligni B-celični limfomi, dvojni ekspresorji, res potrebujejo intenzivnejšo kemoterapijoLučka Boltežar, Samo Rožman, Gorana Gašljević, Biljana Grčar-Kuzmanov, Barbara Jezeršek Novaković, 2023, published scientific conference contribution Abstract: Velikocelični B limfomi z BCL2 in BCL6 preureditvijo so imenovani "double-hit" oziroma "triplehit" limfomi, z imunohistokemično ekspresijo pa dvojni ekspresorji (DE) in vsi imajo slabšo prognozo od klasičnih velikoceličnih limfomov B. Opravljena je bila študija vseh bolnikov z visoko malignimi B limfomi in difuznim velikoceličnim limfomom B, zdravljenih na Onkološkem inštitutu Ljubljana med leti 2017 in 2021. Večina izmed 154 vključenih bolnikov je bila zdravljenih z R-CHOP terapijo (rituksimab, ciklofosfamid, doksorubicin, vinkristin in prednizon), mediani čas spremljanja bolnikov je bil 22 mesecev. 110 bolnikov (71,4 %) ni imelo ponovitve bolezni v opazovanem obdobju. V primerjavi štirih uporabljenih terapevtskih protokolov v skupini DE nismo našli razlik v preživetju (p < 0,712). Preživetje bolnikov z "double-hit" in "triple-hit" limfomi je bilo, pričakovano, slabo. Naši podatki kažejo, da je velik del bolnikov z DE, zdravljen z R-CHOP in standardno CŽS profilakso, tudi uspešno ozdravljen. Za potrditev naših izsledkov so potrebne večje randomizirane raziskave.
Keywords: limfomi, kemoterapija, onkološko zdravljenje
Published in DiRROS: 16.06.2023; Views: 386; Downloads: 147
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206. 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, published scientific conference contribution abstract Keywords: glioblastom, organoidi, standardna terapija, model ex vivo, biologija raka
Published in DiRROS: 16.06.2023; Views: 371; Downloads: 134
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207. Poročilo o preskusu št.: LVG 2023-034 : vzorec št. 2023/00134Ana Brglez, Zina Devetak, Barbara Piškur, 2023, expertise, arbitration decision Keywords: varstvo gozdov, morfološke analize, Fusarium circinatum, borov smolasti rak, rdeči bor, Pinus sylvestris
Published in DiRROS: 15.06.2023; Views: 346; Downloads: 0 |
208. Poročilo o preskusu št.: LVG 2023-032 : vzorec št. 2023/00098Nikica Ogris, Ana Brglez, Špela Hočevar, Barbara Piškur, 2023, expertise, arbitration decision Keywords: varstvo gozdov, morfološke analize, rdeči bor, osip borovih iglic, Lophodermium seditiosum, siva plesen, Botrytis cinerea, sušica najmlajših borovih poganjkov, Diplodia pinea, ekološke razmere, vlažnost zraka
Published in DiRROS: 06.06.2023; Views: 353; Downloads: 75
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210. Porast incidence debelosti : možnosti ne-kirurškega zdravljenja raka endometrijaBlaž Grošelj, Barbara Šegedin, 2023, published scientific conference contribution Abstract: Rak endometrija je v zahodnem svetu najpogostejši ginekološki rak. Debelost je eden glavnih rizičnih faktorjev za razvoj raka endometrija. V zahodnem svetu se incidenca debelosti epidemično strmo povečuje. 10 % bolnic z rakom endometrija je zaradi debelosti oziroma pridruženih bolezni nesposobnih za primarno operativno zdravljenje. Alternativa je zdravljenje z obsevanjem. V članku navajamo nekaj novejših spoznanj s področja obsevanja raka endometrija in dokaze, da je tovrstno zdravljenje lahko enakovredno kirurškemu.
Keywords: rak maternice, ginekološki raki, ginekološka onkologija
Published in DiRROS: 01.06.2023; Views: 357; Downloads: 128
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