31. Understanding stability, oligomerization and deactivation during catalytic lignin hydrodeoxygenation by mechanistic reaction micro-kinetics linked with 3D catalyst particle nanotomographyTina Ročnik, Matej Žula, Janvit Teržan, Blaž Likozar, Uroš Maver, Laura Činč Ćurić, Edita Jasiukaityte, Miha Grilc, 2023, original scientific article Published in DiRROS: 23.06.2023; Views: 382; Downloads: 192
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32. IoT electrochemical sensor with integrated ▫$Ni(OH)_2–Ni$▫ nanowires for detecting formaldehyde in tap waterŠpela Trafela, Abhilash Krishnamurthy, Kristina Žagar, Urška Kavčič, Igor Karlovits, Beno Klopčič, Sašo Šturm, Kristina Žužek Rožman, 2023, original scientific article Abstract: Simple, low-cost methods for sensing volatile organic compounds that leave no trace and do not have a detrimental effect on the environment are able to protect communities from the impacts of contaminants in water supplies. This paper reports the development of a portable, autonomous, Internet of Things (IoT) electrochemical sensor for detecting formaldehyde in tap water. The sensor is assembled from electronics, i.e., a custom-designed sensor platform and developed HCHO detection system based on Ni(OH)2–Ni nanowires (NWs) and synthetic-paper-based, screen-printed electrodes (pSPEs). The sensor platform, consisting of the IoT technology, a Wi-Fi communication system, and a miniaturized potentiostat can be easily connected to the Ni(OH)2–Ni NWs and pSPEs via a three-terminal electrode. The custom-made sensor, which has a detection capability of 0.8 µM/24 ppb, was tested for an amperometric determination of the HCHO in deionized (DI) and tap-water-based alkaline electrolytes. This promising concept of an electrochemical IoT sensor that is easy to operate, rapid, and affordable (it is considerably cheaper than any lab-grade potentiostat) could lead to the straightforward detection of HCHO in tap water.
Keywords: formaldehyde, electrochemical sensor, nickel, tap water
Published in DiRROS: 06.06.2023; Views: 468; Downloads: 192
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37. Soil contamination in nearby natural areas mirrors that in urban greenspaces worldwideYu-Rong Liu, Marcel G. A. van der Heijden, Judith Riedo, Carlos Sanz-Lazaro, David J. Eldridge, Felipe Bastida, Eduardo Moreno-Jiménez, Xin-Quan Zhou, Hang-Wei Hu, Ji-Zheng He, Tine Grebenc, Tina Unuk Nahberger, 2023, original scientific article Abstract: Soil contamination is one of the main threats to ecosystem health and sustainability. Yet little is known about the extent to which soil contaminants differ between urban greenspaces and natural ecosystems. Here we show that urban greenspaces and adjacent natural areas (i.e., natural/semi-natural ecosystems) shared similar levels of multiple soil contaminants (metal(loid)s, pesticides, microplastics, and antibiotic resistance genes) across the globe. We reveal that human influence explained many forms of soil contamination worldwide. Socio-economic factors were integral to explaining the occurrence of soil contaminants worldwide. We further show that increased levels of multiple soil contaminants were linked with changes in microbial traits including genes associated with environmental stress resistance, nutrient cycling, and pathogenesis. Taken together, our work demonstrates that human-driven soil contamination in nearby natural areas mirrors that in urban greenspaces globally, and highlights that soil contaminants have the potential to cause dire consequences for ecosystem sustainability and human wellbeing.
Keywords: soil contamination, urban greenspaces
Published in DiRROS: 28.03.2023; Views: 715; Downloads: 304
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38. Razumevanje motivike in simbolike na vzhodnoazijskem porcelanu v zbirki Narodnega muzeja SlovenijeTina Berdajs, 2022, original scientific article Abstract: V prispevku je analizirana izbrana motivika na različnih vrstah poslikanega vzhodnoazijskega porcelana, ki ga v zbirki keramike hrani Narodni muzej Slovenije. Članek z analizo primarnih virov in sekundarne literature in neposredne obravnave predmetov predstavi pregled slogov okraševanja ter izbranih rastlinskih in živalskih motivov, ki jih najpogosteje srečamo na porcelanu iz omenjene zbirke, ki spada v obdobje med prvo polovico 17. in koncem 19. stoletja (oziroma začet-kom 20. stoletja). V povezavi z analizo motivike in simbolike so predstavljene tudi tri raziskave primerov posameznih predmetov, pri katerih okrasni elementi nudijo vpogled v bogate zgodbe, povezane s kulturno-zgodovinskim ozadjem trgovskih in kulturnih izmenjav med Evropo in Vzhodno Azijo. V prispevku sta obravnavana kitajski in japonski izvozni porcelan, ki so ju masovno proizvajali za zahodne trge, vendar sta bila okrašena z vzhodnoazijsko motiviko. Prispevek vodi v razmislek o vlogi obravnavane simbolike v japonskem in kitajskem kulturno-zgodovinskem okolju in v povezavi s tem tudi (potencialne) vloge te motivike v okolju, kjer so končali predmeti vzhodnoazijskega izvora – na ozemlju današnje Slovenije.
Keywords: vzhodnoazijske zbirke, porcelan, vzhodnoazijski porcelan, motivika, simbolika, izvozni porcelan, Narodni muzej Slovenije
Published in DiRROS: 28.02.2023; Views: 382; Downloads: 171
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