1. Review of bioplastics characterisation by terahertz techniques in the view of ensuring a circular economyAndreja Abina, Tjaša Korošec, Uroš Puc, Aleksander Zidanšek, 2023, pregledni znanstveni članek Opis: The increasing scarcity of natural resources, worsening global climate change, environmental degradation, and rising demand for food are forcing the biotechnology and plastics industries to seek and apply circular economy models that would lead to a sustainable transition in the production and use of bioplastics. Circular economy models can improve the economic productivity of bio-based plastics and have a positive impact on the environment by reducing conventional plastic waste and the consumption of petrochemical feedstocks for plastic production. In addition, some agricultural wastes that have the potential to be used as bioplastics can be reused. Terahertz (THz) systems are already used in the plastics and rubber industries for non-destructive testing, detection, imaging, and quality control. Several reports have highlighted the potential applications of THz spectroscopy and imaging in polymer analysis and plastics characterisation. This potential is even greater with chemometric methods and artificial intelligence algorithms. In this review, we focus on applications that support the transformation of the biotechnology sector to the circular economy, particularly via the transition from conventional plastics to bioplastics. In this review, we discuss the potential of THz systems for the characterisation and analysis of bioplastics and biopolymers. The results of previous studies on biopolymers in the THz frequency range are summarised. Furthermore, the potential of using artificial intelligence approaches such as machine learning as advanced analytical methods in THz spectroscopy and imaging, in addition to the conventionally used chemometric methods, is discussed. The results of this review highlight that THz technology can contribute to closed technological circles in important areas of biotechnology and the related plastics and rubber industries.
Ključne besede: terahertz spectroscopy, terahertz imaging, circular economy, biopolymer, biotechnology, bioplastics
Objavljeno v DKUM: 16.04.2024; Ogledov: 354; Prenosov: 196
 Celotno besedilo (5,14 MB)
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2. Urinary metabolic biomarker profiling for cancer diagnosis by terahertz spectroscopy : review and perspectiveAndreja Abina, Tjaša Korošec, Uroš Puc, Mojca Jazbinšek, Aleksander Zidanšek, 2023, pregledni znanstveni članek Opis: In the last decade, terahertz (THz) technologies have been introduced to the detection, identification, and quantification of biomolecules in various biological samples. This review focuses on substances that represent important biomarkers in the urine associated with various cancers and their treatments. From a diagnostic point of view, urine liquid biopsy is particularly important because it allows the non-invasive and rapid collection of large volumes of samples. In this review, the THz spectral responses of substances considered metabolic biomarkers in urine and obtained in previous studies are collected. In addition, the findings from the relatively small number of prior studies that have already been carried out on urine samples are summarised. In this context, we also present the different THz methods used for urine analysis. Finally, a brief discussion is given, presenting perspectives for future research in this field, interpreted based on the results of previous studies. This work provides important information on the further application of THz techniques in biomedicine for detecting and monitoring urinary biomarkers for various diseases, including cancer.
Ključne besede: terahertz spectroscopy, urinary biomarkers, metabolic biomarkers, cancer diagnostics, biomolecules, non-invasive detection, biomedical detection
Objavljeno v DKUM: 14.03.2024; Ogledov: 212; Prenosov: 33
Celotno besedilo (12,51 MB)
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3. Likovnooblikovni razvoj - prikaz stanja pri osmošolcih : magistrsko deloTjaša Korošec, 2023, magistrsko delo Opis: Magistrsko delo z naslovom Likovnooblikovni razvoj – prikaz stanja pri osmošolcih sestoji iz teoretičnega in empiričnega dela. V uvodnih poglavjih teoretičnega dela je predstavljen predmet likovna umetnost v osnovnošolskem kurikulumu, pri čemer smo se osredotočili na pomembnost predmeta za otrokov razvoj in vlogo učitelja pri tem. Podrobneje je obravnavan razvoj likovnega izražanja otrok z opisom pet stopenjske lestvice razvoja likovnega izražanja. Nadalje je definiran likovnooblikovni razvoj z njegovimi dejavniki in razvojem likovnooblikovnih prvin. Empirični del vsebuje rezultate raziskave, katere namen je bil analizirati nivo likovnooblikovnega razvoja učencev 8. razreda. Spremljali smo posamezne dejavnike likovnooblikovnega razvoja, skupni nivo likovnooblikovnih sposobnosti, ki predstavlja seštevek doseženih vrednosti pri vseh šestih dejavnikih, in dosežene minimalne, srednje in maksimalne vrednosti pri posamezni nalogi t. i. testa LV2 ali testa Štirih risb. Podatke smo analizirali z vidika ugotavljanja razlik med spoloma (kvantitativni del raziskave) in glede na njihovo razpršenost v raziskovalnem vzorcu pri posamezni nalogi testa LV2 (kvalitativni del raziskave). Rezultati so pokazali, da se v nivoju likovnooblikovnega razvoja z vidika spola kaže tendenca doseganja rahlo višjih rezultatov deklic pri vseh dejavnikih, a so statistično značilne razlike med spoloma dokazane le pri dejavnikih optičnotematskega razvoja, oblikovne izkušnje in likovne tehnike ter splošnega likovnega nivoja. Dokazana je tudi statistično pomembna razlika pri skupnem nivoju likovnooblikovnega razvoja, v prid deklicam. Pridobljene podatke smo primerjali s podatki iz pretekle raziskave (Korošec, 2007). Na koncu smo v kvalitativnem delu oblikovno intepretirali izbrana likovna dela obeh spolov.
Ključne besede: likovnooblikovni razvoj, dejavniki likovnooblikovnega razvoja, likovno izražanje, likovna umetnost, osnovna šola
Objavljeno v DKUM: 21.06.2023; Ogledov: 572; Prenosov: 60
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