131. Stimuli -ica experimentEma Štarkl, Marko Simonović, 2024, complete scientific database of research data Keywords: naglasno mesto, izkorenske tvorjenke, izkategorialne tvorjenke, besedotvorna obrazila kot koreni, razpršena morfologija, slovenščina, zbirke podatkov
Published in RUNG: 27.01.2025; Views: 701; Downloads: 12
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132. Words in -ica from the GIGAFIDA corpusEma Štarkl, Marko Simonović, 2024, complete scientific database of research data Keywords: naglasno mesto, izkorenske tvorjenke, izkategorialne tvorjenke, besedotvorna obrazila kot koreni, razpršena morfologija, slovenščina, zbirke podatkov
Published in RUNG: 27.01.2025; Views: 666; Downloads: 13
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133. Modeling of solvent role in protein folding experiments : dissertationKnarik Yeritsyan, 2025, doctoral dissertation Abstract: The Zimm-Bragg (ZB) model serves as a fundamental framework for elucidating conformational transitions in biopolymers, offering simplicity and efficacy in processing experimental data. This study provides a comprehensive review of the Zimm-Bragg model and its Hamiltonian formulation, with particular emphasis on incorporating water interactions and chain size effects into the computational framework. We propose a modified ZB model that accounts for water-polypeptide interactions, demonstrating its ability to describe phenomena such as cold denaturation and helix-coil transitions. In the realm of NanoBioTechnologies, the manipulation of short polypeptide chains is commonplace. Experimental investigation of these chains in vitro often relies on techniques like Circular Dichroism (CD) and timeresolved infrared spectroscopy. Determining interaction parameters necessitates processing the temperature dependence of the normalized degree of helicity through model fitting. Leveraging recent advancements in the Hamiltonian formulation of the Zimm and Bragg model, we explicitly incorporate chain length and solvent effects into the theoretical description. The resulting expression for helicity degree adeptly fits experimental data, yielding hydrogen bonding energies and nucleation parameter values consistent with field standards. Differential Scanning Calorimetry (DSC) stands as a potent tool for measuring the specific heat profile of materials, including proteins. However, relating the measured profile to microscopic properties requires a suitable model for fitting. We propose a novel algorithm for processing DSC experimental data based on the ZB theory of protein folding in water. This approach complements the classical two-state paradigm and provides insights into protein-water and intraprotein hydrogen bonding energies. An analytical expression for heat capacity, considering water interaction, is derived and successfully applied to fit numerous DSC experimental datasets reported in the literature. Additionally, we compare this approach with the classical two-state model, demonstrating its efficacy in fitting DSC data. Furthermore, we have developed and launched a free online tool for processing CD and DSC experimental data related to protein folding, aiming to support scientific research.
Keywords: Zimm-Bragg model, conformational transitions, helix-coil transitions, cold denaturation, circular dichroism, differential scanning calorimetry, protein folding, water-protein interaction, hydrogen bonding energy, degree of helicity, short polypeptide chains, protein heat capacity, protein data analysis, dissertations
Published in RUNG: 27.01.2025; Views: 723; Downloads: 13
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135. Kristina Glojek: Onesnaženost zraka2025, radio or television broadcast, podcast, interview, press conference Abstract: Z dr. Kristino Glojek se pogovarjava o njenem večmesečnem merjenju zraka v idilični slovenski vasi, kamor si sredi zime meščani tako želimo, da bi zadihali s polnimi pljuči. Izkazalo se je, da je zrak prav tako onesnažen. Kako lahko pride do česa takega in kaj lahko storimo, pa v tem podkastu.
Keywords: onesnaženost zraka, podeželje, Slovenija
Published in RUNG: 24.01.2025; Views: 679; Downloads: 6
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138. Novinarska konferenca Univerze v Novi Gorici, na kateri so predstavili rezultate raziskave o onesnaženju zraka v občini Kanal ob SočiGriša Močnik, Kristina Glojek, Miha Stegel, 2024, radio or television broadcast, podcast, interview, press conference Abstract: Novinarska konferenca Univerze v Novi Gorici, na kateri so predstavili rezultate raziskave o onesnaženju zraka v občini Kanal ob Soči in na kateri je sodeloval tudi župan občine Kanal ob Soči Miha Stegel.
Keywords: onesnaženost zraka, izpostavljenost, viri, Kanal ob Soči
Published in RUNG: 24.01.2025; Views: 571; Downloads: 4
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140. Characterization of PM10 sources in a pre-alpine valley with traffic, biomass burning and industrial sourcesKristina Glojek, Thuy Vy Dinh Ngoc, Manousos Ioannis Manousakas, Jean-Luc Jaffrezo, Andre S. H. Prevot, Griša Močnik, 2024, published scientific conference contribution abstract Abstract: The contribution of traffic and wood burning to particulate matter (PM) across the Alps is widely recognized and studied (Herich et al., 2014 and references therein; Glojek et al., 2021). However, studies on valleys with cement production are scarce despite its large PM emissions and potential toxic properties (Kim et al., 2003; Rovira et al., 2018; Ervik et al., 2022; Weinbruch et al., 2023). In this study, we aim to identify and chemically characterize PM10 sources in a pre-alpine valley influenced by cement industry. A comprehensive SA study on the local and regional PM sources and their size-segregated elemental fraction will be presented.
PM10 was sampled daily on quartz filters from November 2020 to November 2021 and analyzed for a large array of chemical species. Equivalent black carbon (eBC) measurements were taken with the Aethalometer AE33. Hourly elemental PM10 and PM2.5 composition was measured in parallel with two Xact 625i from February until May 2021. Positive Matrix Factorization (PMF) was used to determine the sources of PM10 (off-line PMF) with 24-hour time resolution, and of the elemental fraction of PM (on-line PMF) with 1-hour time resolution for the overlapping time period.
A combination of the different PMF models with various instrument data resulted in improved SA in terms of number of identifies sources and their uncertainties. The off-line PMF resolved ten PM10 sources (Fig. 1, left), while the on-line elemental PM10 and the combined elemental PM2.5+coarse PMF recognized 6 and 7 factors, respectively (Fig. 1, right).
Due to large number of samples, we were able to separate between the sources with strong seasonality and sources featuring stability throughout the year. The study disclosed two rarely encountered factors, i.e., chloride-rich (chlorine-rich in case of on-line PMF) and cement dust. We associate these two factors to different processes in the cement plant. The high-resolution on-line PMF enabled us to distinguish between regional and local sources. Furthermore, the size-segregated on-line PMF provided more speciated sources (traffic separation into heavy-duty and light-duty vehicles).
The outputs of the study provide vital information about the influence of cement production on PM10 concentrations and OP in complex environments and are useful for PM control strategies and actions. Further work involves more detailed comparison of offline and online PMF factors and additional sampling and analysis of the samples around the cement industry.
Keywords: positive matrix factorization, PM10 composition, metals, Xact, HVS digitel
Published in RUNG: 24.01.2025; Views: 688; Downloads: 2
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