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11.
Analysis of PM[sub](10), Pb, Cd, and Ni atmospheric concentrations during domestic heating season in Sarajevo, Bosnia and Herzegovina, from 2010 to 2019
Merjema Cepić, Amila Čeliković, Irma Musić, Midheta Bašić, Nudžeima Huseinbašić, Katja Džepina, Jasna Huremović, Sabina Žero, Erna Bubalo, Minela Dacić, 2020, original scientific article

Abstract: This paper examines atmospheric concentrations of particulate matter with an aerodynamic diameter smaller than 10 μm (PM10) and related particle-phase toxic heavy metals Cd, Ni, and Pb during domestic heating seasons from 2010 to 2019 in Sarajevo, Bosnia and Herzegovina. In total, 242 daily PM10 samples were collected using medium and high volume air samplers. The mean daily PM10 mass concentration for all measurements is 75.16 μg/m3 (with the range of 28.77–149.00 μg/m3). Variation of ambient PM10 was observed throughout the study in different years. Hourly values for PM10 measurements during two heating seasons are also presented. Metal concentrations in PM10 were analyzed by electrothermal atomic absorption spectrometry (ETAAS). Quantities of atmospheric mass concentrations of studied trace metals were observed in the following order: Pb > Ni > Cd. The mean concentrations of metals varied with Pb showing the highest concentration (ranging from 1.38 to 234.00 ng/m3), Ni ranging from 0.87 to 42.43 ng/m3, and Cd showing the lowest concentration ranging from 0.26 to 10.09 ng/m3. The concentration of Pb and Cd in PM10 was strongly correlated, suggesting a common source or dependence of these metals in PM10 in Sarajevo. Bioaccessibility of metals in the synthetic gastric juice was also estimated. The quantities of average bioaccessible metal fractions in PM10 samples showed the following trend: Cd > Pb > Ni. The health risk assessment shows that the population of Sarajevo is at increased lifetime risk of experiencing cancer because of exposure to these Cd concentrations in PM10. In addition, parallel PM10 sampling on two samplers showed that obtained results are highly comparable.
Found in: ključnih besedah
Summary of found: ...μm (PM10) and related particle-phase toxic heavy metals Cd, Ni, and Pb during domestic heating...
Keywords: air, PM10, heavy metals, Sarajevo
Published: 09.04.2021; Views: 1017; Downloads: 0
.pdf Fulltext (1,30 MB)

12.
13.
Stability of Interfaces between Topological Insulators and Metals
Matjaz Valant, unpublished invited conference lecture

Found in: ključnih besedah
Keywords: Interfaces, Topological Insulators, Metals
Published: 25.04.2022; Views: 239; Downloads: 0
.pdf Fulltext (569,46 KB)

14.
Unraveling the Role of Major Facilitator Superfamily (MFS) Transporters in Plant Abiotic Stress Tolerance
Christina Paparokidou, 2014, final research report

Abstract: The yields of worldwide crop production are negatively affected by adverse environmental conditions, such as drought, salinity, heavy metal contamination and nutrient depletion in cultivated soils (Yan et al., 2013; Golldack et al., 2011; Yadav, 2010; Kobayashi and Nishizawa, 2012). This reduced crop production constitutes a major problem for food sustainability world-wide (Spiertz, 2013). Indeed, one of the major challenges for plant biotechnology will be to satisfy the increased demand for food on one hand, and to compensate for the loss of crop production on the other. Thus, the discovery of new plant genes that are able to cope with these conditions is critical and expected not only to elucidate the molecular mechanisms underlying crop abiotic stress, but also to pioneer genetic engineering strategies for improved crop productivity. The goal of this project was to identify novel genes belonging to the Major Facilitator Superfamily (MFS) of plant membrane transporters with potential major roles in conferring abiotic stress tolerance, namely to heavy metal, osmotic and iron deficiency stress. We selected three Arabidopsis thaliana MFS transporter genes, provisionally called MFS10, MFS11 and MFS12, which based on publicly available microarray data display specific expression patterns suggesting roles in plant tolerance to different abiotic stresses. RT-PCR analyses showed that in fact the MFS10 gene is highly induced by cadmium (Cd), selenium (Se), salt and mannitol, while the MFS11 gene is upregulated by abscisic acid (ABA) and glucose, and the MFS12 gene by iron (Fe) deficiency, ABA and glucose. Furthermore, subcellular localization of fluorescent reporter fusions indicated that the MFS10 and MFS11 gene products are both plasma membrane localized transporters, while the encoded product of the MFS12 gene appears to be an endoplasmic reticulum localized transporter. Finally, reverse genetics using a null mutant allele for the MFS10 gene demonstrated that it functions as a regulator of plant responses to hyperosmotic (drought and salt) stress.
Found in: ključnih besedah
Summary of found: ...Facilitator Superfamily (MFS), abiotic stress tolerance, heavy metals, osmotic stress, ABA stress, iron deficiency, T-DNA...
Keywords: Major Facilitator Superfamily (MFS), abiotic stress tolerance, heavy metals, osmotic stress, ABA stress, iron deficiency, T-DNA insertion lines, RT-PCR, confocal microscopy.
Published: 03.05.2022; Views: 276; Downloads: 0
.pdf Fulltext (1,54 MB)

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