KOPČÁKOVÁ, Slávka – KVOKAČKA, Adrián. (2018): Súradnice estetiky, umenia a kultúry III – Európske estetické myslenie a umelecká tvorba: pramene, metamorfózy a ich relevancia. Studia Aesthetica XVII.

KOPČÁKOVÁ, Slávka – KVOKAČKA, Adrián. (2018): Súradnice estetiky, umenia a kultúry III – Európske estetické myslenie a umelecká tvorba: pramene, metamorfózy a ich relevancia. Studia Aesthetica XVII . Prešov: FF PU. ISBN 978-80-555-1995-1. 321 s. dostupné na: http://www.pulib.sk/web/kniznica/elpub/dokument/Kopcakova

Reducing Global Warming: The Potential of Organic Agriculture

Climate change mitigation is urgent, and adaptation to climate change is crucial, particularly in agriculture, where food security is at stake. Agriculture, currently responsible for 20-30% of global greenhouse gas emissions (counting direct and indirect agricultural emissions), can however contribute to both climate change mitigation and adaptation. The main mitigation potential lies in the capacity of agricultural soils to sequester CO2 through building organic matter. This potential can be realized by employing sustainable agricultural practices, such as those commonly found within organic farming systems. Examples of these practices are the use of organic fertilizers and crop rotations including legume leys and cover crops. Mitigation is also achieved in organic agriculture through the avoidance of open biomass burning, and the avoidance of synthetic fertilizers, the production of which causes emissions from fossil fuel use. , Andreas Gattinger1, Nic Lampkin3, Urs Niggli1 Common organic practices also contribute to adaptation. Building soil organic matter increases water retention capacity, and creates more stabile, fertile soils, thus reducing vulnerability to drought, extreme precipitation events, floods and water logging. Adaptation is further supported by increased agro-ecosystem diversity of organic farms, based on management decisions, reduced nitrogen inputs and the absence of chemical pesticides. The high diversity together with the lower input costs of organic agriculture is key to reducing production risks associated with extreme weather events. All these advantageous practices are not exclusive to organic agriculture. However, they are core parts of the organic production system, in contrast to most non-organic agriculture, where they play a minor role only. Mitigation in agriculture is however not restricted to the agricultural sector alone. Consumer preferences for products from conventional or organic farms, seasonal and local production, pest and disease resistant varieties, etc. strongly influence agricultural production systems, and thus the overall mitigation potential of agriculture. Even more influential are meat consumption and food wastage. Any discussion on mitigation of climate change in agriculture thus needs to address the entire food chain, and to be linked to general sustainable development strategies. The main challenges to dealing appropriately with the climate change mitigation and adaptation potential of organic agriculture, and agriculture in general, stem from a) insufficient understanding of some of the basic processes, such as the interaction of N2O emissions and soil carbon sequestration, contributions of roots to soil carbon sequestration, and the life-cycle emissions of organic fertilizers, such as compost; b) lack of procedures for emissions accounting which adequately represent agricultural production systems with multiple and diverse outputs, which also encompass ecosystem services; c) the problem to identify and design adequate policy frameworks for supporting mitigation and adaptation in agriculture, i.e. such that do not put systemic approaches at a disadvantage due to difficulties in the quantification of emissions, and in their allocation to single products; d) the necessity to assure that the current focus on mitigation does not lead to neglect of other factors influencing the sustainability of agriculture, such as pesticide loads, eutrophication, acidification or soil erosion; and e) the open questions, how to address consumer behaviour and how to further changes in consumption patterns, in order to utilize their mitigation potential

KOPČÁKOVÁ, Slávka – KVOKAČKA, Adrián. (2018): Súradnice estetiky, umenia a kultúry III – Európske estetické myslenie a umelecká tvorba: pramene, metamorfózy a ich relevancia. Studia Aesthetica XVII.

KOPČÁKOVÁ, Slávka – KVOKAČKA, Adrián. (2018): Súradnice estetiky, umenia a kultúry III – Európske estetické myslenie a umelecká tvorba: pramene, metamorfózy a ich relevancia. Studia Aesthetica XVII . Prešov: FF PU. ISBN 978-80-555-1995-1. 321 s. dostupné na: http://www.pulib.sk/web/kniznica/elpub/dokument/Kopcakova

Determination of important azoles in soil solution using CE

The azoles (represented by penconazole, cyproconazole, and tebuconazole in this study) are frequently used agrochemicals to protect various crops against mildew and fungi. They are considered as endocrine disruptors, because they block the biosynthesis (on the level of enzymes inhibition) of biochemicals with steroid structure. Besides targeted impacts, they can partly get into the soil with the rainfall or litter fall and influence/block the biosynthesis of sterols of non-target organisms. In this sense, the risk of disruption of rhizosphere plant-microbial symbiosis and dynamic processes in the soil solution by azoles is of high importance to be evaluated. We have developed an analytical methodology for determination of penconazole, cyproconazole, and tebuconazole in soil solution using capillary electrophoresis with a photodiode array detector at UV-214 nm and acidic electrolyte solution (pH 1.48). The results were also compared with mass spectrometric measurements using mu-TOF mass spectrometry. There approx. 90% of present azoles were bound in the soil solution matrix. The detection limit for these azoles is about 10(-7) mol dm(-3). Because of very low pK(a) of azoles, we have to consider deprotonation of azoles and consequently the high affinity to create complexes with cations. The majority of present azoles in soil solution might form neutral adducts with mono-cations, making them invisible in electrospray mass spectra. [GRAPHICS] .Peer reviewe

14. mezinárodní vědecká konference Didaktická konference 2021

Title in English: 14th International Scientific Conference Didactic Conference 2021: Proceedings Didactics of mathematics, natural sciences and vocational education represent developing areas and are a breeding ground for new ideas and approaches. In mathematics and physics, the proceedings provide an overview of the historical development of education process and the possibilities of activating students. From a practical point of view, physics and chemistry are interconnected by using simulations in teaching. Vocational education is represented from various perspectives, whether in technical education, by solving logistical problems, or educational activities in the teaching of economic subjects. Due to the current situation, there are abundant contributions on the effects of the ongoing pandemic on the educational process and distance learning

Speciation of lead in soil solution using anodic stripping voltammetry and diffusive gradient in thin film technique

Soil solution was obtained from pot experiments, where plant Thlaspi caerulescens Presl was grown on two different types of soil. Values for free lead ions in soil solution, determined with anodic stripping voltammetry are much smaller then values of "plant available lead", obtained from DGT technique

The role of symbolism for the fans of Korean pop (and his transfer to other cultural contexts).

Katedra teorie umění a tvorbyDepartment of Theory of Art and ArtworksFakulta humanitních studiíFaculty of Humanitie

Private Labels in Retail

This bachelor thesis deals with problematics of private labels on the Czech market and mainly how are these labels perceived among consumers. Primary is focused on private labels of chosen retail chains in the territory of the Czech republic. The main objective of this thesis is to evaluate how retail private labels are positioned on the market, why are customers searching for them and possibly why they might be rejected. The theoretical part defines essential terms and characterizes range of goods sell by chosen retail stores. The practical part is composed of the research how consumers perceive retail private labels, and research of producers supplying retailers with animal products private labels. This is followed by recommendations to retail chains

Electrochemistry with Mass spectrometry as a Tool of Metal Complexes with Organic Ligand Studies

Electrochemical and mass spectrometric approaches for the detection of metals species with organic ligands are compared. Advantages of the connection of electrochemistry with mass spectrometry are discussed

Optimization of a Flow Rate for a Hyphenation of Voltammetry with Electrospray Ionization Mass Spectrometry

The hyphenation of an electrochemical cell prior to mass spectrometer with electrospray ionization allows studying of products and/or of intermediates of electrode reactions. The measurement is realized in a flowing system. The flow rate of the sample markedly influences the MS signal intensity of the product. The calculated optimum value for the electrochemical cell with the sweep volume 0.72 μL is in the range from 0.4 to 0.5 mL h -1 . The experimental optimal value is 0.45 mL h -1 . The optimization of the flow rate has to be provided individually for each product, because the intensity also depends on the rate of the electrode reaction and product stability