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53. Branje kot ustvarjanje : motiviranje za branje pri Gianniju Rodariju in Motserrat SartoBarbara Pregelj, 2022, independent scientific component part or a chapter in a monograph Abstract: Branje velja za receptivno in pasivno dejanje, hkrati pa je vse več raziskovalcev, ki poudarjajo njegovo kompleksnost (Pečjak), individualnost (radikalni konstruktivizem) in ustvarjalne vidike (Armstrong). Besedna zveza ustvarjalnega branja se pojavlja tudi v slovenskem prostoru, najprej pri Mileni Blažić, pozneje tudi pri Igorju Saksidi. Pojem bralne pismenosti postane tudi eden ključnih pojmov didaktike književnega pouka kot izrazito dejaven in večplasten pojem, ki presega zgolj receptivno držo.
Keywords: ustvarjalnost, branje, igra, vzgoja, motiviranje za branje, bralnomotivacijske strategije
Published in RUNG: 13.09.2024; Views: 267; Downloads: 0
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56. Proučevanje eno in večkovinskih katalizatorjev na silikatnem nosilcu v naprednem oksidacijskem procesu za čiščenje odpadnih voda : magistrsko deloSara Kozjan, 2024, master's thesis Abstract: Ena izmed glavnih onesnaževal v odpadnih vodah so strupene organske spojine, katerih količina se z industrijskim razvojem nenehno povečuje. Najbolj nevarna so tako imenovana zaskrbljujoča onesnaževala (CEC – Contaminants of Emerging Concern), med katerimi so najpogostejših farmacevtski izdelki in izdelki za osebno nego. Za učinkovito odstranjevanje le-teh se raziskave osredotočajo na napredne oksidacijske procese (Advanced Oxidation Processes – AOP), ki s pomočjo katalizatorjev in oksidantov organska onesnaževala oksidirajo v ogljikov dioksid, vodo in mineralne kisline. Magistrska naloga se nanaša na proučevanje eno, dvo in trikovinskih katalizatorjev na silikatnem nosilcu. Kovine, ki smo jih proučevali, so bile baker, mangan in železo.
Katalizatorji so bili sintetizirani na Odseku za anorgansko kemijo in tehnologijo na Kemijskem inštitutu. Katalizatorje smo najprej ovrednotili z osnovnimi karakterizacijskimi metodami, kot so rentgenska difrakcija (XRD – X-Ray Diffraction), dušikova fizisorpcija in vrstična elektronska mikroskopija (SEM – Scanning Electron Microscopy). Ugotovili smo, da imajo višjo vsebnost kovin skoraj vsi kalcinirani katalizatorji v primerjavi z ekstrahiranimi in kalciniranimi katalizatorji, kar lahko pripišemo ekstrakcijskemu postopku, med katerim se najverjetneje odstrani določeno množino kovin iz katalizatorjev. Postopek priprave bistveno ne vpliva na specifično površino, velikost por in volumen por katalizatorjev. Pri kalciniranih katalizatorjih, ki vsebujejo Cu, je le-ta prisoten v obliki CuO.
Katalitske teste sem izvedla na dveh modelnih onesnaževalih iz skupine CEC in sicer na kumarinu (Fenton in foto-Fenton AOP) in glifosatu (Fenton AOP). Ugotovila sem, da so v primeru obeh uporabljenih modelnih onesnaževal najbolj učinkoviti dvokovinski katalizatorji in sicer pri kumarinu katalizator s Cu in Mn ter pri glifosatu katalizator s Cu in Fe. Pri kumarinu katalizator s Cu in Mn kaže tudi na fotokatalitsko aktivnost pri obsevanju z vidno svetlobo. Prav tako sem ugotovila, da so tako kot pri kumarinu tudi pri glifosatu bolj učinkoviti kalcinirani katalizatorji v primerjavi z ekstrahiranimi in kalciniranimi katalizatorji. To lahko pripišemo višji vsebnosti kovin ali/in prisotnosti Cu specij v obliki CuO v kalciniranih katalizatorjih. To ugotovitev bi bilo potrebno v nadaljevanju podrobneje raziskati.
Keywords: čiščenje odpadnih voda, napredni oksidacijski procesi, heterogena kataliza, katalizatorji na silikatnem nosilcu, glifosat, kumarin
Published in RUNG: 11.09.2024; Views: 436; Downloads: 8
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57. Structural and chemical analysis of hard carbon negative electrode for Na-ion battery with X-ray Raman scattering and solid-state NMR spectroscopyAva Rajh, Matej Gabrijelčič, Blaž Tratnik, Klemen Bučar, Iztok Arčon, Marko Petric, Robert Dominko, Alen Vižintin, Matjaž Kavčič, original scientific article Abstract: This study explores the structural changes of hard carbon (HC) negative electrodes in sodium-ion batteries induced by insertion of Na ions during sodiation. X-ray Raman spectroscopy (XRS) was used to record both C and Na K-edge absorption spectra from bulk HC anodes carbonized at different temperatures and at several points during sodiation and desodiation. Comparing the [pi]*/[sigma]*
regions in the C K-edge spectra sp2/sp3 hybridization ratio of material was determined. Higher carbonization temperatures led to increased order in graphitic structure and shorter bond lengths. Sodiation caused a decrease in graphitic layer order due to inserted Na ions. Complementary operando solid state 23Na nuclear magnetic resonance (ssNMR) studies confirmed the structural changes, while showing pore filling mechanism, which is not observed in ex situ measurements, primarily at higher carbonization temperatures. XRS analysis of Na K-edge spectra revealed systematic variations in the solid electrolyte interface (SEI) composition during cycling. Changes in XRS spectra were attributed to both SEI composition alterations, accompanied by the insertion/adsorption of Na ions at defect sites within the carbon structure.
Keywords: hard carbon, RIXS, carbon XANES, EXAFS, NMR, Na battery
Published in RUNG: 10.09.2024; Views: 383; Downloads: 0
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59. Politics of sexuality in Slovenian crime fiction from »moderna« and Ljuba Prenner to the 21st CenturyPrimož Mlačnik, 2024, published scientific conference contribution abstract Abstract: The first part of the lecture will weave together two
short theoretical introductions regarding the
relationship between sexuality and crime fiction,
focusing on the poetics of the genre(s) and, second,
the Western politics of sexuality. In the second part,
the lecture will present the historically contextualised
subject of sexuality or rather intimacy in Slovenian
literature in the period of »moderna« and two short
analyses of one of the first Slovenian crime stories,
Požigalec (1910; The Arsonist) and the first Slovenian
crime novel Neznani storilec: malomeščanska
kriminalna povest (1939; Unknown Perpetrator: a
provincial crime tale). In the context of politics of
sexuality, the lecture will lay bare a few distinctive
socio-historical representational patterns –
ideological themes found in stories of (women) writers
from »moderna« and contemporary Slovenian crime
fiction – that persist well into the 21st Century.
Keywords: poetics of crime fiction, politics of sexuality, Slovenian crime fiction
Published in RUNG: 10.09.2024; Views: 311; Downloads: 0
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60. Quantitative detection of Microcystis aeruginosa (cyanobacteria) in water using single domain antibodies (VHH) : dissertationGbenga Folorunsho Oginni, 2024, doctoral dissertation Abstract: Microcystis aeruginosa accumulation in freshwater poses a significant threat to aquatic organisms and human health. The toxicity of Cyanobacteria metabolites urges for the development of methods for their rapid and efficient detection but what is still almost completely missing is the availability of reagents for the quantification of M. aeruginosa cells in water to monitor the fluctuations of its population. In this study, nanobodies against cell surface antigens of the toxic Cyanobacteria M. aeruginosa were recovered bywhole-cell panning of a naive phage display library. Six unique sequences were identified and three of them sub-cloned and purified as fusion immunoreagents together with either green fluorescent protein or Avi-Tag to be used for diagnostics. Theirspecificity and sensitivity were evaluated by immunofluorescence, by fluorescent and colorimetric cell ELISA and by thermal lens spectrometry (TLS). No cross-reactivity with unrelated microalgae was detected, and both ELISA and TLS methods provided a linear range of detection of several logs. The limit-of-detection of TLS was as low as 1 cell/ml.
Keywords: cyanobacteria, nanobodies, phage display, thermal lens spectrometry, dissertations
Published in RUNG: 10.09.2024; Views: 335; Downloads: 4
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