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Trnava, Slovakia

The University of Trnava is a college of "university type" based in Trnava, Slovakia. Wikipedia.

Uhrovcik J.,University of Trnava
Talanta | Year: 2014

The paper is devoted to the evaluation of limit of detection (LOD) and limit of quantification (LOQ) values in concentration domain by using 4 different approaches; namely 3σ and 10σ approaches, ULA2 approach, PBA approach and MDL approach. Brief theoretical analyses of all above mentioned approaches are given together with directions for their practical use. Calculations and correct calibration design are exemplified by using of electrothermal atomic absorption spectrometry for determination of lead in drinking water sample. These validation parameters reached 1.6 μg L -1 (LOD) and 5.4 μg L-1 (LOQ) by using 3σ and 10σ approaches. For obtaining relevant values of analyte concentration the influence of calibration design and measurement methodology were examined. The most preferred technique has proven to be a method of preconcentration of the analyte on the surface of the graphite cuvette (boost cycle). © 2013 Elsevier B.V. Source

Trnka A.,University of Trnava | Grim T.,Palacky University
Behavioral Ecology | Year: 2013

Theory of parental care in biparental species predicts that a decrease in 1 mate's parental effort should trigger a partial increase of care by the other mate. Previous studies investigating compensatory behavior used nestling provisioning as the measure of parental effort. However, nest defense is also a costly component of parental care because defenders risk injury or death caused by predators. Here for the first time, we test the compensation hypothesis in the context of nest defense. We experimentally widowed (by temporarily removing the other mate) female or male great reed warblers Acrocephalus arundinaceus and faced them with a predator near the nest (the stuffed Eurasian sparrowhawk Accipiter nisus). Female responses were independent of their partner's presence or absence. In contrast, lone males did not compensate for the absence of their mates; they even behaved more aggressively when their partner was present, contradicting the partial compensation hypothesis. We discuss potential determinants of between-species variation in sex-specific compensatory behavior. We predict that a lack of compensation might be found in species with different renesting and remating potentials between males and females, for example, where males are unwilling/unable to raise the brood when unassisted by females and therefore, avoid an investment that cannot increase their fitness. © 2012 The Author. Source

Trnka A.,University of Trnava | Grim T.,Palacky University
Frontiers in Zoology | Year: 2013

Background: Plumage polymorphism may evolve during coevolution between brood parasites and their hosts if rare morph(s), by contravening host search image, evade host recognition systems better than common variant(s). Females of the parasitic common cuckoo (Cuculus canorus) are a classic example of discrete color polymorphism: gray females supposedly mimic the sparrowhawk (Accipiter nisus), while rufous females are believed to mimic the kestrel (Falco tinnunculus). Despite many studies on host responses to adult cuckoos comprehensive tests of the " hawk mimicry" and " kestrel mimicry" hypotheses are lacking so far.Results: We tested these hypotheses by examining host responses to stuffed dummies of the sparrowhawk, kestrel, cuckoo and the innocuous turtle dove (Streptopelia turtur) as a control at the nest. Our experimental data from an aggressive cuckoo host, the great reed warbler (Acrocephalus arundinaceus), showed low effectiveness of cuckoo-predator mimicry against more aggressive hosts regardless of the type of model and the degree of perfection of the mimic. Specifically, warblers discriminated gray cuckoos from sparrowhawks but did not discriminate rufous cuckoos from kestrels. However, both gray and rufous cuckoos were attacked vigorously and much more than control doves. The ratio of aggression to gray vs. rufous cuckoo was very similar to the ratio between frequencies of gray vs. rufous cuckoo morphs in our study population.Conclusions: Overall, our data combined with previous results from other localities suggest polymorphism dynamics are not strongly affected by local predator model frequencies. Instead, hosts responses and discrimination abilities are proportional, other things being equal, to the frequency with which hosts encounter various cuckoo morphs near their nests. This suggests that female cuckoo polymorphism is a counter-adaptation to thwart a specific host adaptation, namely an ability to not be fooled by predator mimicry. We hypothesize the dangerousness of a particular model predator (sparrowhawks are more dangerous to adult birds than kestrels) may be another important factor responsible for better discrimination between the gray cuckoo and its model rather than between the rufous cuckoo and its model. We also provide a review of relevant existing literature, detailed discussion of plumage polymorphism in cuckoos, methodological recommendations and new ideas for future work. © 2013 Trnka and Grim; licensee BioMed Central Ltd. Source

Agency: Cordis | Branch: FP7 | Program: CSA-SA | Phase: SiS.2012.2.1.1-1 | Award Amount: 3.19M | Year: 2013

GENOVATE is an action-research project based on the implementation of Gender Equality Action Plans (GEAPs) in six European universities. It brings together a consortium with diverse experience with gender equality mainstreaming approaches, with varying institutional and disciplinary backgrounds and located in different national contexts. All, however, share common challenges for women engaged in research and all have identified three common areas for intervention: (i) recruitment, progression and research support; (ii) working environment, work-life balance and institutional culture, and finally, (iii) the increasingly important domain of standards and diversity in research excellence and innovation. Each partner university will address these areas through their individually tailored GEAPs that will build on existing structures and policies where relevant, or develop new systems and practices where appropriate. This contextualised approach will be supported by an ongoing knowledge-exchange system within the consortium and by ongoing participatory evaluation, both of which will maximise the shared learning of all partners at every step of the process. An ePortfolio system will allow individual experiences, challenges and thoughts to be documented and collated throughout the implementation process and this will inform the main deliverables of the projects: a social model of gender equality implementation and guidelines tailored to different actors and different contexts highlighting the issues, the challenges and the approaches that work. Dissemination of the outcomes will be shaped by a communications strategy for learning within the institutions, within national learning circles with key stakeholders and, internationally, through networking, media and publication activities. The long-term impact of the project will also be felt within the partner universities: the implementation of the GEAPs involves sustainability strategies for each institution to ensure that ther

Petranova D.,University of Trnava
European Journal of Science and Theology | Year: 2013

When discussing media effect and its impact upon human beings, children and youngsters are considered to be a high risk group. It is mainly due to the fact that they do not have a consistent value system, learn through imitation (not only from real life, but also media reality), and in their early age are incapable of telling fiction from reality. Another high risk group, although significantly less discussed within this context, is seniors. There are European, as well as Slovak standards and legal norms that stipulate and emphasize the necessity to educate seniors, or at least make an appeal to improve media literacy of the elderly. However, the concrete forms and methods of media education are minimal, or they do not exist at all. Source

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