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11.
Arsenic in natural waters: hydrogeochemistry characterization and toxicity effects
Doroteja Gošar, 2018, master's thesis

Abstract: Arsenic contamination in natural water is a worldwide problem and a major health concern. In master thesis hydrogeochemistry and toxicity effects of natural waters rich in arsenic were studied. The main objective of the master thesis was to evaluate As pollution of the Freixeda stream and groundwater in abandoned Freixeda gold mine area in NE Portugal near Mirandela city (41.413767 N 7.103562 W) and compare it with the data from previous studies. Further on, toxicological evaluation of selected water samples was performed in the in vitro system of human cell line Caco-2. Chemical analyses of sampled water samples with use of different modelling sofware show that groundwater have higher sulphate and bicarbonate values than surface water, which could be the reason for As desorption and higher As values in groundwater. Water-rock interaction promotes reduction and dissolution of sulphide minerals and in reductive environments dissolution of secondary Fe minerals releases adsorbed As into solution. Toxicological testing on human cells included cytotoxicity assay, genotoxicity assay and production of reactive oxigene species (ROS). Genotoxicity was only modestly affected by a short-term exposure to As-contaminated water samples, however, higher concentrations of As in real samples lead to higher level of oxidative stress and decreased cell viability. Exposure of cells to pure As(III) solution show clear concentration dependent decrease in cell metabolism and viability, strong genotoxicity and increased ROS generation. Considering the worldwide extent of As contamination in natural waters and ability of intestinal epithelium to reduce the potential harmful effects of As, more studies evaluating the human intestinal permeability for As should be done in the future.
Found in: ključnih besedah
Summary of found: ...Water quality, arsenic, hydrogeochemistry, toxicity, Caco-2 cell line...
Keywords: Water quality, arsenic, hydrogeochemistry, toxicity, Caco-2 cell line
Published: 26.09.2018; Views: 1678; Downloads: 88
.pdf Fulltext (3,76 MB)

12.
Efficient traffic regulation based on urban Black Carbon measurements and prediction model
Asta Gregorič, Luka Drinovec, Griša Močnik, Anja Barle, Matija Marolt, Jernej Henigman, Borut Šuštar, Mitja Ferlan, Andrej Pangeršič, 2018, published scientific conference contribution abstract

Found in: ključnih besedah
Summary of found: ...air quality, black carbon...
Keywords: air quality, black carbon
Published: 29.10.2018; Views: 1136; Downloads: 0
.pdf Fulltext (568,01 KB)

13.
Dispersion experiments in central London: The 2007 DAPPLE project
Curtis R Wood, Samantha J Arnold, Ahmed A Balogun, Janet F Barlow, Stephen E Belcher, Rex E Britter, Hong Cheng, Adrian Dobre, Justin J N Lingard, Damien Martin, Marina K Neophytou, Fredrik K Petersson, Alan G Robins, Dudley E. Shallcross, Robert J Smalley, James E Tate, Alison S Tomlin, Iain R White, 2009, original scientific article

Abstract: In the event of a release of toxic gas in the center of London, emergency services personnel would need to determine quickly the extent of the area contaminated. The transport of pollutants by turbulent flow within the complex streets and building architecture of London, United Kingdom, is not straightforward, and we might wonder whether it is at all possible to make a scientifically reasoned decision. Here, we describe recent progress from a major U.K. project, Dispersion of Air Pollution and its Penetration into the Local Environment (DAPPLE; information online at www.dapple.org.uk). In DAPPLE, we focus on the movement of airborne pollutants in cities by developing a greater understanding of atmospheric flow and dispersion within urban street networks. In particular, we carried out full-scale dispersion experiments in central London from 2003 through 2008 to address the extent of the dispersion of tracers following their release at street level. These measurements complemented previous studies because 1) our focus was on dispersion within the first kilometer from the source, when most of the material was expected to remain within the street network rather than being mixed into the boundary layer aloft; 2) measurements were made under a wide variety of meteorological conditions; and 3) central London represents a European, rather than North American, city geometry. Interpretation of the results from the full-scale experiments was supported by extensive numerical and wind tunnel modeling, which allowed more detailed analysis under idealized and controlled conditions. In this article, we review the full-scale DAPPLE methodologies and show early results from the analysis of the 2007 field campaign data.
Found in: ključnih besedah
Summary of found: ...Air quality, Atmospheric thermodynamics, Dispersions, Experiments...
Keywords: Air quality, Atmospheric thermodynamics, Dispersions, Experiments
Published: 18.07.2019; Views: 723; Downloads: 0
.pdf Fulltext (17,86 MB)

14.
CityFlux perfluorocarbon tracer experiments
Fredrik K Petersson, Damien Martin, Iain R White, Stephen J Henshaw, Graham Nickless, Ian Longley, Carl J Percival, Martin Gallagher, Dudley E. Shallcross, 2010, original scientific article

Abstract: In June 2006, two perfluorocarbon tracer experiments were conducted in central Manchester UK as part of the CityFlux campaign. The main aim was to investigate vertical dispersion in an urban area during convective conditions, but dispersion mechanisms within the street network were also studied. Paired receptors were used in most cases where one receptor was located at ground level and one at roof level. One receptor was located on the roof of Portland Tower which is an 80m high building in central Manchester. Source receptor distances in the two experiments varied between 120 and 600 m. The results reveal that maximum concentration was sometimes found at roof level rather than at ground level implying the effectiveness of convective forces on dispersion. The degree of vertical dispersion was found to be dependent on source receptor distance as well as on building height in proximity to the release site. Evidence of flow channelling in a street canyon was also found. Both a Gaussian profile and a street network model were applied and the results show that the urban topography may lead to highly effective flow channelling which therefore may be a very important dispersion mechanism should the right meteorological conditions prevail. The experimental results from this campaign have also been compared with a simple urban dispersion model that was developed during the DAPPLE framework and show good agreement with this. The results presented here are some of the first published regarding vertical dispersion. More tracer experiments are needed in order to further characterise vertical concentration profiles and their dependence on, for instance, atmospheric stability. The impact of urban topography on pollutant dispersion is important to focus on in future tracer experiments in order to improve performance of models as well as for our understanding of the relationship between air quality and public health.
Found in: ključnih besedah
Summary of found: ...our understanding of the relationship between air quality and public health....
Keywords: air quality, atmospheric chemistry, concentration (composition), convective system, dispersion, public health, street canyon, tracer, urban area
Published: 18.07.2019; Views: 675; Downloads: 0
.pdf Fulltext (1,07 MB)

15.
Quality Assured Across Borders of Disciplines and Cultures
peter Purg, 2019, published scientific conference contribution abstract

Abstract: Abstract (full): Within the international master study programme of Media Arts and Practices (MAP) the University of Nova Gorica School of Arts is currently developing an interdisciplinary module in Art, Science and Technology (MAST) within a diverse partnership of two further universities and three NGOs. Both curriculum development projects were funded by the European Commission for their progressive, even disruptive character. If MAP (2011-2014), developed within the ADRIART.net project, was to join four countries as well as several artistic and media production fields creating a new partnership model and a contemporary employment profile, MAST (2018-2020) now seeks to root the art-thinking paradigm deep into the innovation process outside university. In order to reinvent better and meaningful futures for the society at large the dominance of the technological and the scientific approach is to be balanced out by the artistic openness and radical difference. This in turn mirrors the structure of the MAST curriculum – not only that its outcomes are unprecedented and tuned onto most progressive priorities of the Europen Union. The syllabus reminds of the innovation process itself, building a new module-specific graduate profile of an “innovation catalyst’. The abovementioned two cases will be interpreted on the background of ‘The Standards and Guidelines for Quality Assurance in the European Higher Education Area’ (ESG) as the primary setting of their development and implementation, while the ‘internal’ quality aspect shall be prioritized. The discussion will predominantly refer to the design and approval of programmes, but also present some novel solutions in student-centered learning, teaching and assessment. After touching upon a relevant recognition issue, the public impact and meaning of such programmes will be considered more broadly. As far as the design and approval of programmes (ESG 1.2) are concerned, the Guidelines point out that curricula should be designed „in line with the institutional strategy“ which often proves a paradox – a new academic programme development may instigate radical institutional change from the bottom-up, such that is unlikely to occur through the conventional top-down approach. The MAP project involved four university partners, of which two accredited the master programme fully as such (Croatia and Slovenia) and two participated therein merely with partnership modules. While the Slovenian partner gradually modified its strategic priorities as a (fairly small) art school throughout the project's three years, the bigger Croatian national art academy would let the MAP programme remain insulated from other programmes, preventing the curricular innovations and new teaching and learning methods from spreading to other programmes. This eventually led to inter-institutional conflicts and a closure of the programme in 2018 after three years of its running. Even if all invlved universities „involved students and other stakeholders in the work“ and the MAP programme contained „well-structured placement opportunities“ (ESG 1.2), its sustainability was evaluated low also in the case of the Italian and Austrian partners, since most of the MAP curricular structures eventually proved too open and progressive for their traditional acdemic environments. The Graz Technical University (Austria) returned in the MAST project again to enter a new, more contemporary alliance, founded on their bilateral continuity with the University of Nova Gorica, and their strategic priority of developing interdisiplinary programmes. The latter has in 2014 also established and continues to lead a South-Eastern-Europe wide CEEPUS network of ten art academies named ADRIART.CE (Belgrade, Budapest, Graz, Nova Gorica, Krakow, Rijeka, Split, Sarajevo, Belgrade, Skopje, Sofia), three of which presented its core that developed from the MAP partnership (www.ADRIART.net/ce). Besides Nova Gorica and Graz, the MAST partnership involves one further university (Madeira University, Portugal) and three NGOs (the renowned Kapelica Gallery from Slovenia, the Croatian Cultural Allience and the Europe-wide network Culture Action Europe). The ESG standard 1.3 on student-centred learning, teaching and assessment suggests that the programme delivery should „encourage students to take an active role in creating the learning process, and that the assessment of students reflects this approach.“ The MAP programme manifests this approach in several novums such as the 'Progress Track' module, where students critically peer-reflect on their academic progress along three semesters, or the 'Studio' module that brings into the programme external art (and later in MAST also science and/or technology) practitioners. It also treats contemporary topical issues that relate to the European topics such as e.g. 'The Future of Work' as well as to the profile of the cohort, their course selections and career orientation. A continuous 'Carrier Module' (MAST being one of them, others are Film, Animation, New Media, Photography and Contemporary Art Practice) in the MAP programme supports the student's „flexible learning path“ along three semesters of gradual academic progression: After exploring the chosen realm, and then defining own topical interest and method, the student focuses on her or his area of artistic (or interdisciplinary) investigation, in order to complete the Master Thesis (that includes a theoretical thesis and a practical project) in the fourth semester, all to encourage „a sense of autonomy in the learner, while ensuring adequate guidance and support from the teacher“. In the case of MAST the students shall each year be faced with the semester-long 'Challenge' course that is to keep them deeply involved in a real-life innovation process brought in from NGOs or companies, along with their expert mentors, or evaluators (in assessment committees, programme boards etc). Both MAP and MAST curriculum development projects focussed importantly on the issue of „fair recognition of higher education qualifications, periods of study and prior learning, including the recognition of non-formal and informal learning“ (ESG 1.4). This was to not only support but also promote mobility of staff and especially students, since both curricular structures instigate international as well as inter-sectoral collaboration: if the academic experience of students and their career prospects is to be advanced, a dynamc flux and interaction of students, (external) mentors and (university) teachers needs to be preserved at both entry and exit points to the programme (or module). Only this way the positive public impact and meaning of such programmes (ESG 1.8) can be kept transparent – not only to be accounted for, but also actively steered towards actual social and economic relevance! Study programmes that matter to all stakeholders – the students, the universities and the employers, including a broader public, need to be kept open for manifold talents and apply progressive interdisciplinary teaching and learning methods, attracting experts and tackling real-life challenges across disciplinary sectors, and national borders.
Found in: ključnih besedah
Keywords: arts, pedagogy, quality assurance, curriculum development, science, technology
Published: 11.09.2019; Views: 792; Downloads: 0
.pdf Fulltext (1,97 MB)

16.
How to react to the necessity of a sustainable animal production? The EcoLamb project.
Petra Makorič, Ario de Marco, Martina Bergant, Tanja Peric, 2019, published scientific conference contribution

Abstract: EcoLamb assesses the sustainability of diverse European sheep production systems focusing on the ecological footprint, animal welfare aspects and nutrition value of lamb meat. The outcomes of these assessments will be used to understand the potential future barriers that limit the innovative capacity and development of the sector and the opportunities that may provide a future market niche against competitive products from other global markets. Farm solutions that incorporate consumer expectations for animal welfare and meat quality will enhance the competitiveness of Europe's lamb meat sector. The project engages trans-national research and industry stakeholders from 6 countries made up of Germany, Italy, Portugal, Slovenia, Spain and Turkey to analyse on 20 case study farms resource-efficient, competitive and low-carbon lamb production models. Direct linkage between animal welfare, meat quality and pharmaceutical use will also be determined using innovative Precision Farming techniques. The project will produce a toolbox of recommendations for productive sheep farm management, supply chain and marketing on how to improve the acceptability of lamb meat by consumers. Thus, the multidisciplinary approach and the multi-actor involvement of the EU sheep sector will assist in re-designing critical aspects to increase society acceptance and the place of lamb meat in future diets and the outcomes of the project will be used by stakeholders to promote changes in farm management, marketing and processing of meat from sheep. Additionally, results will be used by farm consultants, farmer groups and policy officers to re-design consulting approaches and plan new initiatives to make all aspects of the European sheep industry more sustainable.
Found in: ključnih besedah
Summary of found: ...consumer expectations for animal welfare and meat quality will enhance the competitiveness of Europe's lamb...
Keywords: Sustainability, animal production, lamb, welfare, quality, meat, EcoLamb
Published: 26.11.2019; Views: 723; Downloads: 0
.pdf Fulltext (7,65 MB)

17.
Quality Control of Purified Proteins to Improve Research Data Reproducibility
Stephan Uebel, Ario de Marco, Nick Berrow, Mario Lebendiker, Maria Garcia-Alai, Stefan Knauer, Blanca Lopez-Mendez, Andrea Matagne, Annabel Parret, Kim Remans, Bertrand Raynal, 2019, published scientific conference contribution abstract (invited lecture)

Found in: ključnih besedah
Keywords: protein quality, biophysical analysis, aggregation
Published: 15.01.2020; Views: 407; Downloads: 0
.pdf Fulltext (432,57 KB)

18.
19.
A new optical-based technique for real-time measurements of mineral dust concentration in PM10 using a virtual impactor
Luka Drinovec, Jean Sciare, Iasonas Stavroulas, S. Bezantakos, Michael Pikridas, Florin Unga, Chrysanthos Savvides, Bojana Višnjić, Maja Remškar, Griša Močnik, 2020, original scientific article

Abstract: Atmospheric mineral dust influences Earth’s radiative budget, cloud formation, and lifetime; has adverse health effects; and affects air quality through the increase of regulatory PM10 concentrations, making its real-time quantification in the atmosphere of strategic importance. Only few near-real-time techniques can discriminate dust aerosol in PM10 samples and they are based on the dust chemical composition. The online determination of mineral dust using aerosol absorption photometers offers an interesting and competitive alternative but remains a difficult task to achieve. This is particularly challenging when dust is mixed with black carbon, which features a much higher mass absorption cross section. We build on previous work using filter photometers and present here for the first time a highly timeresolved online technique for quantification of mineral dust concentration by coupling a high-flow virtual impactor (VI) sampler that concentrates coarse particles with an aerosol absorption photometer (Aethalometer, model AE33). The absorption of concentrated dust particles is obtained by subtracting the absorption of the submicron (PM1) aerosol fraction from the absorption of the virtual impactor sample (VIPM1 method). This real-time method for detecting desert dust was tested in the field for a period of 2 months (April and May 2016) at a regional background site of Cyprus, in the Eastern Mediterranean. Several intense desert mineral dust events were observed during the field campaign with dust concentration in PM10 up to 45 μgm
Found in: ključnih besedah
Summary of found: ...lifetime; has adverse health effects; and affects air quality through the increase of regulatory PM10 concentrations, making...
Keywords: aerosol absorption, mineral dust, on-line detection, air quality
Published: 20.07.2020; Views: 233; Downloads: 0
.pdf Fulltext (2,38 MB)

20.
Air quality and climate change - how smart can the cities be?
Griša Močnik, Matevž Lenarčič, 2020, unpublished invited conference lecture

Abstract: What starts as an air quality problem in urban areas, ends up as a climate change problem globally. Emissions from cities and the power generating facilities powering the cities have local, regional and global effects. We show examples spanning these scales with very practical advice on how to start abatement locally.
Found in: ključnih besedah
Keywords: air quality, climate change, black carbon, aerosol, co2, smart city
Published: 11.09.2020; Views: 284; Downloads: 0
.pdf Fulltext (7,10 MB)

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