141. Effects of different China and ball clays on traditional ceramic process : a multi-methodological approachAndreas Bernasconi, Nicoletta Marinoni, Lucia Mancini, Marco Voltolini, Fernando Francescon, R. Sartori, Alessandro Pavese, 2024, izvirni znanstveni članek Povzetek: A combination of technological properties, mineralogical composition and three-dimension (3D) imaging is proposed to get insights into sanitary-ware ceramic bodies of the Vitreous-China technology as a function of the different clay raw materials used in the formulation of slip. Particular attention is paid to the effects induced along the production chain, during casting, after drying (dried body) and after firing (fired body). The different combinations of China and ball clays lead to different casting behaviour, in first instance, and to different mechanical strength, then, due to variations in the particle size distribution rather than in the mineralogical composition. In particular, the finer the particle size, the finer the pore size and, in addition, the better the mechanical properties (with a maximum of 4.7 MPa), due to a better packing. However, fine particle size distribution worsens the slip’s behaviour into moulds, impacting negatively on productivity, with a 17 % reduction of casting thickness. Upon firing process, such differences are mitigated by the body densification and result in more similar pores’ distributions, though the importance of the mineralogical composition is revealed. In fact, differences in mineralogical phases’ contents and in kaolinite HI index guide the comprehension of high temperature phase evolution and technological properties like the fired body thermal expansion, foremost via residual quartz. These results are important for a plastic raw materials’s selection within the ceramic sanitary-ware process.
Ključne besede: clay raw materials, vitreous-China technology, synchrotron X-ray microtomography, X-ray diffraction, ceramic properties, phase analysis
Objavljeno v DiRROS: 16.12.2024; Ogledov: 89; Prenosov: 63
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142. ▫$Ni-MoO_2$▫ composite coatings electrodeposited at porous Ni substrate as efficient alkaline water splitting cathodesAleksandar M. Petričević, Jelena D. Gojgić, Christian I. Bernäcker, Thomas Rauscher, Marjan Bele, Milutin Smiljanić, Nejc Hodnik, Nevenka Elezović, Vladimir Jović, Mila N. Krstajić Pajić, 2024, izvirni znanstveni članek Objavljeno v DiRROS: 16.12.2024; Ogledov: 89; Prenosov: 45
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144. Strong-form meshless numerical modelling of visco-plastic materialGašper Vuga, Boštjan Mavrič, Božidar Šarler, 2024, izvirni znanstveni članek Povzetek: This work extends our research on the strong-form meshless Radial Basis Function - Finite Difference (RBF-FD) method for solving non-linear visco-plastic mechanical problems. The polyharmonic splines with second-order polynomial augmentation are used for the shape functions. Their coefficients are determined by collocation. Three different approaches (direct, composed, and hybrid) are used for the numerical evaluation of the divergence operator in the equilibrium equation. They are presented and assessed for a visco-plastic material model with continuously differentiable material properties. It is shown that the direct approach is not suitable in this respect. In comparison to the previously investigated elasto-plasticity, it is shown that the composed approach can successfully cope with visco-plastic problems and is found to be even more accurate than the hybrid approach, which has previously proven to be most stable and effective in solving elasto-plasticity. This work extends the applicability of strong-form RBF-FD methods and opens up new areas of modelling non-linear solid mechanics.
Ključne besede: visco-plastic material responses, hybrid radial basis, generated finite differences, polyharmonic splines
Objavljeno v DiRROS: 16.12.2024; Ogledov: 77; Prenosov: 42
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145. Cytotoxicity assessment of HDPE microplastic on Tetrahymena thermophila (Protozoa, Ciliate) : assuring quality and FAIR dataValentina Perc, Veno Kononenko, Nina Jeliaskova, Matej Hočevar, Slavko Kralj, Darko Makovec, Maja Caf, Damjana Drobne, Sara Novak, 2024, izvirni znanstveni članek Ključne besede: cytotoxicity, microplastic, HDPE, FAIR data, tetrahymena thermophila
Objavljeno v DiRROS: 16.12.2024; Ogledov: 85; Prenosov: 48
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146. Preservation of 5-hydroxymethylcytosine levels in LRIG1 across genomic DNA and cell-free DNA in glioma patientsDaša Jevšinek Skok, Luka Bolha, Nina Hauptman, 2024, drugi znanstveni članki Povzetek: Cell-free DNA (cfDNA) has recently emerged as a promising minimally invasive diagnostic biomarker for various cancers. In this study, our aim was to identify cfDNA biomarkers by investigating genes that displayed significant differences between glioma patients and their corresponding controls. To accomplish this, we utilized publicly available data from the Gene Expression Omnibus, focusing on 5-hydroxymethylcytosine (5hmC) profiles in both cfDNA and genomic DNA (gDNA) from glioma patients and healthy individuals. The intersection of gene lists derived from these comparative analyses unveiled LRIG1 and ZNF703 as the two genes with elevated 5hmC levels in both the cfDNA of glioma patients and gDNA of glioma tissue compared to their respective controls. The gene expression data revealed both genes were upregulated in glioma tissue compared to normal brain tissue. Integration of 5hmC data revealed a strong positive correlation in the glioma tissue group between 5hmC and the gene expression of the LRIG1 gene. Furthermore, exploration using the AmiCa web tool indicated that LRIG1 gene expression was elevated compared to 17 other cancers included in the database, emphasizing its potential as a distinctive biomarker across multiple cancer types.
Ključne besede: cell-free DNA, glioma, 5-hydroxymethylcytosine, biomarkers
Objavljeno v DiRROS: 13.12.2024; Ogledov: 111; Prenosov: 44
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148. First report of grapevine leafroll-associated virus 4 infecting grapevine in HungaryR. Olah, M. Turcsan, Nikoletta Jaksa-Czotter, K. Olah, D. A. Nyitrayne Sardi, Irena Mavrič Pleško, Eva Varallyay, 2024, drugi znanstveni članki Ključne besede: grapevine, viruses, leafroll-associated, small RNA sequencing, small RNA high-throughput sequencing, RT-PCR
Objavljeno v DiRROS: 13.12.2024; Ogledov: 105; Prenosov: 24
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