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Št. zadetkov: 7
Spektroskopija na nanoskali s polariziranimi X‐žarki s tehniko NEXAFS‐TXM
Polona Umek
Video in druga učna gradiva
Oznake: mathematics;physics;chemistry
Leto: 2013 Vir: videolectures.net
Photocatalytic biocidal effect of copper doped TiO2 nanotube coated surfaces under laminar flow, illuminated with UVA light on Legionella pneumophila
Martina Oder, Tilen Koklič, Polona Umek, Rok Podlipec, Janez Štancar, Martin Dobeic
Izvirni znanstveni članek
Oznake: Legionella pneumophila;nanotubes;nanomaterials;light;polystyrene;flow rate;water resources;laminar flow;bacterial biofilms;food microbiology;titanium;chemistry;
Legionella pneumophila can cause a potentially fatal form of humane pneumonia (Legionnaires’ disease), which is most problematic in immunocompromised and in elderly people. Legionella species is present at low concentrations in soil, natural and artificial aquatic systems and is therefore constantly ...
Leto: 2020 Vir: Zdravstvena fakulteta (UL ZF)
Efficient decoration of graphene oxide with a narrow size distribution of noble metal nanoparticles
Daniele Vella, Damjan Vengust, Polona Umek, Ali Rezaei, Matija Jezeršek, Aleš Mrzel
Izvirni znanstveni članek
Oznake: grafenov oksid;nanodelci;nanokompoziti;graphene oxide;decoration;nanoparticles;nanocomposites;
We have developed a significantly enhanced method for the effective and homogeneous decoration of graphene oxide (GO) and reduced graphene oxide (r-GO) flakes with gold (Au) and platinum (Pt) nanoparticles. This method involves the direct nucleation of nanoparticles on the surface of dispersed GO th ...
Leto: 2025 Vir: Fakulteta za strojništvo (UL FS)
Structural properties and thermal stability of cobalt- and chromium-doped [alpha]-MnO [sub] 2 nanorods
Romana Cerc Korošec, Polona Umek, Alexandre Gloter, Jana Padežnik Gomilšek, Peter Bukovec
Izvirni znanstveni članek
Oznake: manganov dioksid;dopiranje;EXAFS;nanopalčke;XANES;manganese dioxide;doping;nanorods;
$α-MnO_2$ nanorods were synthesized via the hydrothermal decomposition of $KMnO_4$ in an acidic environment in the presence of $Co^{2+}$ and $Cr^{3+}$ ions. Reactions were carried out at three different temperatures: 90, 130 and 170 °C. All prepared samples exhibit a tetragonal $MnO_2$ crystalline p ...
Leto: 2017 Vir: Digitalna knjižnica Univerze v Mariboru (DKUM)
Element redistribution in the oxide scale during air oxidation of Kanthal AF alloy
Blaž Karpe, Janez Kovač, Monika Manfreda, Milan Bizjak, Stojana Veskovič Bukudur, Romana Cerc Korošec, Polona Umek
Izvirni znanstveni članek
Oznake: zlitine FeCrAl;Kanthal alloys;oxidation tests;protective alumina scale;high temperature oxidation;
The oxidation mechanism of Kanthal AF (FeCrAl alloy) was studied in the temperature range of 800–1200 °C through isothermal and thermo-cyclic oxidation tests. At 800 °C, tests involved 12-hour cycles (up to 36 cycles), while at 1000 °C and 1200 °C, they were conducted isothermally (up to 432 hours). ...
Leto: 2024 Vir: Naravoslovnotehniška fakulteta (UL NTF)
How to control fluorescent labeling of metal oxide nanoparticles for artefact-free live cell microscopy
Boštjan Kokot, Hana Majaron, Polona Umek, Katarina Petra van Midden, Stane Pajk, Maja Garvas, Christian Eggeling, Tilen Koklič, Iztok Urbančič, Janez Štrancar
Izvirni znanstveni članek
Oznake: dye leakage;labeling characterization;artefacts;labeling-induced changes;reliable nanomaterial labeling;
Nanotechnologies hold great promise for various applications. To predict and guarantee the safety of novel nanomaterials, it is essential to understand their mechanism of action in an organism, causally connecting adverse outcomes with early molecular events. This is best investigated using noninvas ...
Leto: 2021 Vir: Fakulteta za naravoslovje in matematiko (UM FNM)
Spodbudno učno okolje za nadarjene otroke v predšolskem in zgodnješolskem obdobju
Polona Gradišek, Maja Umek, Nada Turnšek, Darija Skubic
Druge monografije in druga zaključena dela
Oznake: povzetki;zborniki;
Spodbudno učno okolje za nadarjene otroke v predšolskem in zgodnješolskem obdobju
Leto: 2013 Vir: Pedagoška fakulteta (UL PEF)
Št. zadetkov: 7
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