141. Defective TiO2 Nanotube Arrays for Efficient PhotoelectrochemicalDegradation of Organic PollutantsManel Machreki, Takwa Chouki, Georgi Tyuliev, Dušan Žigon, Bunsho Ohtani, Alexandre Loukanov, Plamen Stefanov, Saim Emin, 2023, izvirni znanstveni članek Opis: Oxygen vacancies (OVs) are one of the most critical factors that enhance the electrical and catalytic characteristics of metal oxide-based photo-electrodes. In this work, a simple procedure was applied to prepare reduced TiO 2 nanotube arrays (NTAs) (TiO 2−x) via a one-step reduction method using NaBH 4. A series of characterization techniques were used to study the structural, optical, and electronic properties of TiO 2−x NTAs. X-ray photoelectron spectroscopy confirmed the presence of defects in TiO 2−x NTAs. Photoacoustic measurements were used to estimate the electron-trap density in the NTAs. Photoelectrochemical studies show that the photocurrent density of TiO 2−x NTAs was nearly 3 times higher than that of pristine TiO 2. It was found that increasing OVs in TiO 2 affects the surface recombination centers, enhances electrical conductivity, and improves charge transport. For the first time, a TiO 2−x photoanode was used in the photo-electrochemical (PEC) degradation of a textile dye (basic blue 41, B41) and ibuprofen (IBF) pharmaceutical using in situ generated reactive chlorine species (RCS). Liquid chromatography coupled with mass spectrometry was used to study the mechanisms for the degradation of B41 and IBF. Phytotoxicity tests of B41 and IBF solutions were performed using Lepidium sativum L. to evaluate the potential acute toxicity before and after the PEC treatment. The present work provides efficient PEC degradation of the B41 dye and IBF in the presence of RCS without generating harmful products.
Ključne besede: TiO2 Nanotube Arrays, PhotoelectrochemicalDegradation of Organic Pollutants
Objavljeno v RUNG: 12.06.2023; Ogledov: 363; Prenosov: 3
 Celotno besedilo (4,22 MB)
Gradivo ima več datotek! Več... |
142. |
143. Raba dvojine glede na stavčno funkcijo samostalnika in ohranjenost dvojinskih oblik v šestih slovenskih narečjihMatic Pavlič, Artur Stepanov, Penka Stateva, 2023, izvirni znanstveni članek Opis: Izvedli smo psiholingvistični eksperiment izražanja, in sicer opis slike dogodka s prehodnim stavkom na osnovi treh ključnih besed. Na ta način smo v šestih slovenskih narečjih raziskali rabo dvojinskih oblik samostalnika in glagola. Rezultate smo primerjali s tipologijo narečij glede izgube dvojine v slovenščini, ki jo predstavljajo geolingvistične karte v Jakop (2008) na osnovi podatkov iz Slovenskega lingvističnega atlasa. Ugotovili smo, da raba dvojine ni povezana z ohranjenostjo dvojinskih samostalniških oblik v jezikovnih sistemih slovenskih narečij, ampak le s stavčno funkcijo samostalnika. S slednjim smo prvič eksperimentalno potrdili domnevni vpliv (Tesnière 1925)
glagolskega ujemanja na izražanje dvojine v slovenščini.
Ključne besede: dvojina, samostalnik, glagol, ujemanje, slovenščina, psiholingvistika
Objavljeno v RUNG: 12.06.2023; Ogledov: 318; Prenosov: 7
Celotno besedilo (1,44 MB)
Gradivo ima več datotek! Več... |
144. |
145. Covalent organic frameworks for fluorescent imaging of hypoxiaTina Skorjanc, Dinesh Shetty, Gregor Mali, Damjan Makuc, Martina Bergan Marušič, Matjaz Valant, 2023, objavljeni povzetek znanstvenega prispevka na konferenci Ključne besede: hypoxia, covalent organic frameworks, imaging, fluorescence, post-synthetic modification
Objavljeno v RUNG: 06.06.2023; Ogledov: 390; Prenosov: 0
Gradivo ima več datotek! Več... |
146. Highly Time-Resolved Apportionment of Carbonaceous Aerosols from Wildfire Using the TC–BC Method: Camp Fire 2018 Case StudyMatic Ivančič, Martin Rigler, Balint Alfoldy, Gašper Lavrič, Irena Ježek Brecelj, Asta Gregorič, 2023, izvirni znanstveni članek Ključne besede: black carbon, brown carbon, carbonaceous aerosol, wildfire, air quality, CASS
Objavljeno v RUNG: 06.06.2023; Ogledov: 395; Prenosov: 5
Celotno besedilo (18,34 MB) |
147. |
148. |
149. Genetic Algorithm Based Approach for Serving Maximum Number of Customers Using Limited ResourcesSoumen Atta, Priya Ranjan Sinha Mahapatra, 2013, izvirni znanstveni članek Opis: It is often needed to install limited number of facilities to address the demand of customers due to resource constraints and thus the requirement to provide service to all customers is not possible to meet. In such situation, the facilities are installed (placed) so that the maximum demand can be met. The problem of installing (locating) such facilities are known as Maximal Covering Location Problem (MCLP) [2] in facility location [1]. We assume that (i) all facilities are in a plane, and (ii) all customers can be considered as a point set on the same plane. The type of covering area (or range) of a facility depends on the facility to be installed. We consider the MCLP where the covering area (or range) of each facility is the area of a square with fixed size. In other words here, each facility is installed at the center of the square. The problem considered in this article is defined as follows: given a set P of n input points (customers) on the plane and k squares (facilities) each of fixed size, the objective is to find a placement of k squares so that the union of k axis parallel squares covers (contains) the maximum numbers of input points where k (1≤k≤n) is a positive integer constant. This problem is known to be NP-hard [5]. We have proposed a genetic algorithm (GA) to solve this problem.
Ključne besede: Maximal Covering Location Problem, Facility Location, Genetic Algorithm
Objavljeno v RUNG: 05.06.2023; Ogledov: 335; Prenosov: 0
Gradivo ima več datotek! Več... |
150. |
