211. |
212. Evaluation of sediments from the river Drava and their potential for further use in the building sectorVilma Ducman, Karmen Fifer Bizjak, Barbara Likar, Mitja Kolar, Ana Robba, Jernej Imperl, Mojca Božič, Boštjan Gregorc, 2022, original scientific article Abstract: Sedimentation is a naturally occurring process of allowing particles in water bodies to settle out of the suspension under a gravity effect. In this study, the sediments of the Drava River were fully investigated to determine the heavy metal concentrations along the river and their potential reuse in the construction sector. Naturally dehydrated sediments from the Drava River were tested as an additive for the production of fired bricks. The dredged sediments were used as a substitute for natural brick clay in amounts up to 50% by weight, and it was confirmed that up to 20% by weight of the added sediment could be used directly in the process without critically affecting performance. Finally, the naturally dehydrated sediments were also evaluated for their use as a filling material in the construction of levees. The natural moisture content of the dehydrated sediment was too high for it to be used without additives, so quicklime was added as an inorganic binder. The test results showed an improvement in the geotechnical properties of the material to such an extent that it is suitable as a filling material for levees.
Keywords: sediment, pollution, clay industry, soil stabilization, open access
Published in DiRROS: 31.05.2023; Views: 339; Downloads: 173
 Full text (3,20 MB)
This document has many files! More... |
213. Clay rich river sediments calcined into precursors for alkali activated materialsLea Žibret, Wolfgang Wisniewski, Barbara Horvat, Mojca Božič, Boštjan Gregorc, Vilma Ducman, 2023, original scientific article Abstract: Alkali activated materials (AAMs), a potential alternative to cement-based products or ceramics, can incorporate large amounts of currently landfilled aluminosilicate rich materials such as calcined clay-rich river sediments collected at hydropower plant dams. Untreated fresh sediment and untreated aged sediment intended to serve as AAM precursors were calcined to increase their amorphous content, then activated by Na or K-based silicate or hydroxide solutions and cured at 60 ◦C for three days.
Up to 30 mass % (ma%) of fly ash (FA) or ladle slag (LS) increased the mechanical performance. The phase composition and microstructure are analyzed using X-ray diffraction, fourier-transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy and mercury intrusion porosimetry to gain further insight into how the additives influence the final properties of the resulting AAMs. The main crystalline components of the prepared AAMs are quartz, illite/muscovite and feldspar. The amorphous content reaches up to 52.5 ma% in the Na-activated AAMs and up to 48.8 ma% in K-activated AAMs. The acquired results confirm the suitability of the investigated sediments as sole precursors for AAMs. The mechanical properties of the AAMs can be improved by adding FA and/or LS.
Keywords: sediments, alkali activated materials, properties
Published in DiRROS: 30.05.2023; Views: 325; Downloads: 252
Full text (4,71 MB)
This document has many files! More... |
214. FooDis : a food-disease relation mining pipelineGjorgjina Cenikj, Tome Eftimov, Barbara Koroušić-Seljak, 2023, original scientific article Abstract: Nowadays, it is really important and crucial to follow the new biomedical knowledge that is presented in scientific literature. To this end, Information Extraction pipelines can help to automatically extract meaningful relations from textual data that further require additional checks by domain experts. In the last two decades, a lot of work has been performed for extracting relations between phenotype and health concepts, however, the relations with food entities which are one of the most important environmental concepts have never been explored. In this study, we propose FooDis, a novel Information Extraction pipeline that employs state-of-the-art approaches in Natural Language Processing to mine abstracts of biomedical scientific papers and automatically suggests potential cause or treat relations between food and disease entities in different existing semantic resources. A comparison with already known relations indicates that the relations predicted by our pipeline match for 90% of the food-disease pairs that are common in our results and the NutriChem database, and 93% of the common pairs in the DietRx platform. The comparison also shows that the FooDis pipeline can suggest relations with high precision. The FooDis pipeline can be further used to dynamically discover new relations between food and diseases that should be checked by domain experts and further used to populate some of the existing resources used by NutriChem and DietRx.
Keywords: text mining, relation extraction, named entity recognition, named entity linking, food-disease relations
Published in DiRROS: 25.05.2023; Views: 386; Downloads: 176
Full text (1,11 MB)
This document has many files! More... |
215. |
216. Kirurško zdravljenje nemelanomskega kožnega raka : BCC in SCCBarbara Perić, 2023, published scientific conference contribution Abstract: Osnovno zdravljenje nemelanomskih kožnih rakov je kirurški poseg. Izrez kože s tumorjem v lokalni anesteziji še vedno predstavlja zdravljenje, ki zagotavlja življenje z majhnim tveganjem za ponovitev bolezni. Da bi to zagotovili, moramo ob tumorju odstraniti tudi ustrezen pas zdrave kože v skladu s priporočili za posamezno vrsto nemelanomskega kožnega raka in mesto, kjer se ta nahaja. Vedno stremimo k primarnemu zaprtju nastalega defekta kože. Nemelanomski kožni raki redko zasevajo, ko odkrijemo regionalne zasevke teh rakov, sprva opravimo disekcijo bezgavk prizadete lože. Le redko je potrebno pri kirurškem zdravljenju lokoregionalno napredovale bolezni poseči po metodah kot so hipertermična izolirana ekstremitetna perfuzija uda ali elektrokemoterapija.
Keywords: rak kože, melanom, kirurško zdravljenje
Published in DiRROS: 18.05.2023; Views: 312; Downloads: 174
Full text (406,96 KB)
This document has many files! More... |
217. Poročilo o preskusu št.: LVG 2023-024 : vzorec št. 2023/00067Tine Hauptman, Špela Hočevar, Špela Jagodic, Zina Devetak, Barbara Piškur, 2023, expertise, arbitration decision Keywords: varstvo gozdov, morfološke analize, Fusarium circinatum, borov smolasti rak, Pinus, bor
Published in DiRROS: 18.05.2023; Views: 296; Downloads: 0 |
218. |
219. From language models to large-scale food and biomedical knowledge graphsGjorgjina Cenikj, Lidija Strojnik, Risto Angelski, Nives Ogrinc, Barbara Koroušić-Seljak, Tome Eftimov, 2023, original scientific article Abstract: Knowledge about the interactions between dietary and biomedical factors is scattered throughout uncountable research articles in an unstructured form (e.g., text, images, etc.) and requires automatic structuring so that it can be provided to medical professionals in a suitable format. Various biomedical knowledge graphs exist, however, they require further extension with relations between food and biomedical entities. In this study, we evaluate the performance of three state-of-the-art relation-mining pipelines (FooDis, FoodChem and ChemDis) which extract relations between food, chemical and disease entities from textual data. We perform two case studies, where relations were automatically extracted by the pipelines and validated by domain experts. The results show that the pipelines can extract relations with an average precision around 70%, making new discoveries available to domain experts with reduced human effort, since the domain experts should only evaluate the results, instead of finding, and reading all new scientific papers.
Keywords: biomedical knowledge graphs, relation-mining pipelines, relation extraction, validation
Published in DiRROS: 17.05.2023; Views: 411; Downloads: 167
Full text (2,39 MB)
This document has many files! More... |
220. Zarodne in somatske mutacije kožnega melanomaBarbara Perić, 2023, published scientific conference contribution Abstract: Vsaka celica telesa ima svoj lasten genski zapis. Kakšen je ta zapis in kako se prevede v beljakovine je odvisno od zarodnih sprememb genov in od vplivov okolja. Genski zapis je osnova za nastanek, razumevanje in dandanes tudi zdravljenje raka. V zadnjih dveh desetletjih so bili melanociti in kožni melanom, ki nastane iz njih predmet številnih molekularnogenetskih raziskav. Tako vemo, da med osebami z družinsko obremenitvijo za kožni melanom najpogosteje odkrijemo patogeno različico CDKN2A gena ob kateri je zvišano tako tveganje za kožni melanom kot za rak trebušne slinavke. Ko govorimo o somatskih mutacijah, je gotovo najbolj znana BRAFV600Emutacija, ki predstavlja enega prvih dogodkov v patogenezi kožnih melanomov nastalih na intermitentno soncu izpostavljeni koži. Leta raziskav tovrstnih gonilnih mutacij so pripeljala tudi do razvoja tarčne terapije.
Keywords: rak kože, melanom, kožni melanom
Published in DiRROS: 16.05.2023; Views: 345; Downloads: 116
Full text (307,39 KB)
This document has many files! More... |
