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The results of the study demonstrated a progressive increase in the DN prevalence over time, in particular its subclinical stages. The long-term poor glycaemic control was a determining factor in the rapid DN development. The sensory conduction parameters deteriorated faster than the motor parameters. The present study is one of few of those in type 1 DM, which in relation to risk factors assess not only the presence of neuropathy, but also its severity. The results support the necessity of a regular diagnostic search for DN in diabetic children.

The kinetics of defense responses was studied in soybean exposed to ecologically relevant concentrations of arsenic for 96 h. In the roots of two soybean cultivars with contrasting tolerance to this metalloid there were observed differences in basal levels of membrane lipid peroxidation as well as a significantly different course of peroxidation upon exposure to As. The different course of stress was reflected in the accumulation of defense components. The responses of individual chitinase isoforms were studied since these enzymes had previously been shown to be stable components of defense against metals. The kinetics and magnitude of accumulation of the three isoforms during exposure to As significantly differed within as well as between the studied cultivars. Furthermore, accumulation of these isoforms appeared to be related to oxidative status in the root tissue. The timing of induced responses is likely to be important for efficient defense against metal(oid) pollution in environment.

This study assisted in identifying and preventing the increase in heavy metals in soil and winter wheat. Its accumulation can affect cultivated crops, quality and crop yields, and consumers’ health. Selected heavy metals were analyzed using the GTAAS method. They were undertaken on selected heavy metals content (Cd, Cu, Pb, and Zn) in arable soils at three sites in Slovakia and their accumulation in parts of cultivated winter wheat. Our study showed that the limit value of Cd in soil samples was exceeded in the monitored arable soils from 2017–2019. The average content values of Cu and Zn did not exceed the limit values, even in Pb values (except for the spring period). The analyses also showed that the heavy metals content for plants bioavailable in soil did not exceed the statutory critical values for Cd, Cu, and Zn’s average content values. However, Pb content exceeded permitted critical values. Heavy metals bioaccumulation (Zn, Cu) was within the limit values in wheat. Analyzed Cd content in wheat roots and Pb content were determined in all parts of wheat except grain. The study showed that grain from cultivated winter wheat in monitored arable soils is not a risk for consumers.

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Restricting the movement of students because of COVID-19 requires expanding the offer of online education. Online education should reflect the principles of pedagogical constructivism to ensure the development of students’ cognitive and social competencies. The paper describes the preparatory course of mathematics, realized in the form of MOOC. This course was created and implemented based on the principles of pedagogical constructivism. The analysis of the respondents’ approach to MOOC revealed a difference between bachelor and master students in the use of MOOC. Bachelors found a strong correlation between their approach to MOOCs and the way they are educated in secondary schools. The results of the research point to the need of more emphasis should be placed on advancing the learner’s skills in navigating and analysing information. The questionnaire filled in by the participants also monitored the students’ access to learning. The results of the experiment confirmed the connection between the preferred approach to learning and students’ activities within the MOOC.

The current study aims to fill the gap in the current literature by focusing on the wide scale of nonnative English as a Foreign Language (EFL) teachers' perceptions and opinions in the specific context of a post-Communist country. It focuses on the link between five demographic variables (age, the length of English language study, English teaching experience, stay in English-speaking countries, and the intensity of communication with English native speakers) of Slovak EFL teachers and their English speaking anxiety (ESA) and English speaking quality (ESQ). The teachers' self-perceived causes, consequences, factors, and needs concerning their ESA were also detected. Data were collected by both qualitative methods (questionnaire and interview) and quantitative methods (scale and test). The correlation analyses revealed a negative relationship between most variables and teachers' anxiety and a positive relationship between their age and anxiety. Both qualitative and quantitative results reflect the specifics of teaching EFL in a post-Communist country.

The paper deals with distance learning of geographic information systems (GIS) at the Department of Geography and Regional Development FNS CPU in Nitra using various educational materials and the JitsiMeet application during the COVID-19 pandemic. Students of bachelor study had GIS lessons in face-to-face instruction in a computer room for half of a semester. In the middle of the semester, the COVID-19 pandemic broke out in Slovakia and the face-to-face instruction had to be reoriented to the distance form of learning. The first month of distance learning took place with the help of textbooks and video tutorials, which were sent to students. The task of the students that month was to study a new subject, then students were sent a questionnaire where they had to express their opinion on learning GIS using video tutorials and textbooks, but also indicate whether they had facilities for online learning (PC, audio and video outputs, Internet) as well as to express their views and experiences with online learning as such. Although after evaluating the questionnaire, up to 71% of students answered that they had learned a new subject from the video tutorials and 57% also from GIS textbooks, several percent of students were still unfit for this form of learning. That is why we went to lessons with the free JitsyMeet app, which allows for video conferencing, screen sharing, chat, and more. The aim of the paper is to point out the perception of distance GIS learning by university students during the COVID-19 pandemic.