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Deuterostichococcus alpinus sp. nov. (Chlorophyta; Trebouxiophyceae) from Antarctica
Get PDFLichens are the most dominant components in flora of Antarctica. A lichen epiphyte green alga FACHB-2327, isolated from Antarctic lichen Stereocaulon alpinum, was identified as a new species belonging to the genus Deuterostichococcus. The specimen of lichen Stereocaulon alpinum was collected from King George Island, Antarctica. A comprehensive analysis, including morphology, ultrastructure, habitat, phylogeny and secondary structure of SSU rDNA V9 region, was carried out. The green alga FACHB-2327 was described and named as Deuterostichococcus alpinus sp. nov. to recall the continent where it was discovered. The alga FACHB-2327 forms single celled thalli or pseudofilaments up to three cells; cells are cylindrical with mean size 7-18 (20) × 3-5 µm and rounded ends. It can be distinguished from the other species in genus Deuterostichococcus by morphological characters, including cell size, length/width ratio and phylogenetic position using SSU rDNA and ITS rDNA sequences
[Černý, Karel (ed.). Nad Evropou půlměsíc. II, Muslimové v Česku a v sousedních německy hovořících zemích]
No full textPrevalence and impact of Internet Gaming Disorder: A population-based study
No full textInternet Gaming Disorder (IGD) has emerged as a significant public health concern, yet not enough is known about its prevalence among the general population as well as its relationship to well-being, mental health, specifically depression and anxiety, and gaming genres. This study aimed to address these questions. The research was conducted on a representative sample of the Croatian general population including 4,994 participants, aged between 15 and 64 years (M = 40.75, SD = 15.49). The Ten-Item Internet Gaming Disorder Test, Mental Health Inventory-5, Personal Well-being Index, Gaming time and Game Genres Preferences were used. The prevalence of the IGD in the general population of Croatia, aged 15-64 years, was estimated at 0.48%, 95% CI [0.30%, 1%], and among video game players (N = 1,239) at 1.63%, 95% CI [1.11%, 3%]. The highest prevalence was observed among young males. IGD showed the strongest relationship with depression, and weaker relationships with anxiety and well-being. Among the individual criteria, negative consequences for significant relationships, deception and escape had the strongest, while tolerance, loss of control and withdrawal had the weakest relationship to depression, anxiety and well-being, in a relative sense. Sports games and casual games players had lower risk for IGD, while other genres did not differ in their risk for IGD. Online and offline games did not differ in their risk for IGD. This study has shown that IGD has a relatively low prevalence among the general population and video game players, and that not all IGD criteria are equally relevant. Future longitudinal studies and studies on clinical samples are needed
Повышение квалификации преподавателей русского языка в Чехии : (организация, основные направления и актуальные проблемы)
No full textThe article is devoted to the possibilities of improving the professional qualifications of Russian language teachers in 2019–2024 in the Czech Republic. In connection with recent events (pandemic, Russian-Ukrainian war), which have greatly affected the Czech education system as a whole, some trends in the field of advanced training of Russian language teachers are considered. More emphasis is placed on reviewing the existing offering and thematic focus of the courses. The first part of the article raises questions about changes in interest in the Russian language in a historical perspective, summarizes information about the foundation of Russian studies in individual universities, mentions organizations developing pedagogical foundations for teaching foreign languages, as well as other entities offering similar courses for Russian language teachers. The article presents available statistical data concerning the change in interest in the Russian language among primary and secondary school students. The final section lists several issues that influence changes in the organization of advanced training courses for Russian language teachers in the Czech Republic
Antarctic regolith as prospective substrate for cultivation of plants in space analog habitat greenhouses: Seed germination and early growth study of broccoli in aqueous and acidic dilutions
Get PDFFood prouction for the needs of space mission crews has posed one of the leading concerns of recent space research. One of the arguably best terrestrial analogs of extraterrestrial habitats are the polar research stations, such as those found in Antarctica. Plants cultivation, offering a valulable source of fresh food, have been a prominent research topic not only for their significance for space analog experiments, but also for the needs of the scientists working at these stations. One of the approaches is the In Situ Resource Utilization (ISRU), which in this case can be adopted by cultivating crops directly in the local soil. Our study aims to evaluate early growth phase and photosynthetic performance of Brassica oleracea var. botrytis italica in Antarctic regolith collected at foothill of the Berry Hill mesa, James Ross Island, Antarctica. Fine grained regolith consisting primarily of hyaloclastic breccias was collected and transported to the laboratories in the Czech Republic. For germination and growth of the experimental plants, leachates were prepared from the regolith using deionized water and 0.11 M acetic acid. Individuals of B. oleracea were cultivated from seeds in a Murashige-Skoog (MS) liquid solution under controlled conditions (T = 21°C, PAR = 120 µmol m-2 s-1) either without addition of regolith leachates (control) or with addition of leachates done by using demineralized water and weak acetic acid. Growth rate, and photosynthetic activity of the experimental plants were measured by chlorophyll fluorescence in 1 day intervals for 21 days. We measured (1) FV/FM (potential yield of photochemical photosynthetic processes), and (2) ФPSII (effective quantum yield of photosystem II). It was showed that acidic leachate either fully inhibited germination or had a strong inhibitory effect on B. oleracea. Water leachates added to the MS medium had moderately strong inhibitory effects on FV/FM and ФPSII. The experimental plants showed decreased but still satisfactory growth rate. The results are promising for follow-up studies aimed to understand and expand the experimental plant growth in Antarctic regolith and its potential association with ISRU purposes
Marine phytoplankton community structure of the waters of the Argentine Islands (2019-2021)
Get PDFThe variability of phytoplankton community structure was analyzed in the waters of the Argentine Islands in late summer period of 2019, 2020 and 2021, as well as from February 2020 to February 2021. Biodiversity (121 taxa) and phytoplankton structure of the Argentine Islands waters corresponded to earlier studies. The late summer succession in 2019 and 2020 and 2021 was found typical for the waters of the Argentine Islands. Representatives of Bacillariophyceae completely dominated the studied community. Biomass variability was largely determined by large centric diatoms with low specific surface (S/W) values ranging from 70 to 300 m2·kg-1. Higher values of phytoplankton development metrics and a more noticeable presence of haptophyte, cryptophyte and diatom groups with S/W values larger than 700 m2·kg-1 differed 2019 from 2020 and 2021. Lower development metrics and simplified taxonomic structure of phytoplankton were recorded in 2020 – 2021. The decrease in the specific surface of the groups in the late summer periods of 2020 and 2021 was caused both by a decrease in the relative contributions of small-celled Coccolithophyceae and Cryptophyceae and by a general decrease in S/W of these taxa. Characteristic annual phytoplankton development patterns were revealed. The spring phytoplankton development was formed by high abundance of Fragilariopsis with a predominant contribution to the biomass of large centric diatoms. At the beginning of austral summer, the role of flagellates from the genera Cryptomonas (Cryptophyta) and Pyramimonas (Chlorophyta), as well as small flagellates, increased. The late austral summer period was characterized by the dominance of large centric diatoms with a significant presence of small flagellates and a periodic increase in the contribution of Fragilariopsis. The spring-summer succession had common features with the development of phytoplankton in the more northern regions of the Western Antarctic Peninsula (Palmer station), while the late summer phase – with the more southern Rothera station
Ethnic Aspects of Contemporary Education of Children and Youth in Podhale
Get PDFThe formation of ethnic identity is one of the many tasks of modern education. It is the way to educate an aware and creative human being capable of taking care of their ancestral heritage and multiply the cultural assets of the region where they come from and live. Not all regions can boast a well-preserved ethnic culture so it is worth drawing on the experience of those that have their own heritage and take numerous measures to pass it on to future generations. In Poland, models and inspiration can be sought in Podhale where the tradition and culture of the region is still alive. It is obviously the family home that is essential in the process of passing it on. However, effective regional education must also be carried out outside the home, which is why this paper presents a broad spectrum of activities of various institutions, organisations and communities involved in the transmission of Podhale culture to children and young people. The various forms of culture-oriented education present in Podhale that are analysed in the article belo
The Contribution of Josaphata Hordashevska and the Congregation of the Sisters Servants to the Development of Ukrainian Preschool Education and Socio-pedagogical Assistance to the Rural Population in Galicia (Late 19th and early 20th Century)
Get PDFFor many centuries, the preservation and development of the Ukrainian national culture and education was possible only due to the efforts of prominent public figures and spiritual leaders. These included the Ukrainian monastic communities, which contributed significantly to the social and cultural development of Galicia in the late 19th - early 20th centuries, particularly the Sisters Servants. The purpose of the article is to highlight the contribution of the Servant Sister Josaphata Hordashevska to the foundation and development of preschool for rural Ukrainian children, and to the organisation of charitable activities for the benefit of adults, including the elderly and sick. The Congregation of the Sisters Servants of Mary Immaculate was established in 1892 with the purpose to provide educational and social services for the rural population. The first Sister Servant, Josaphata Hordashevska, set an inspiring example of the devoted service to the Ukrainian people in the field of preschool education and socio-pedagogical assistance. Her deeds demonstrated the example of a holy life, full of sacrificial and tireless service to the needs of others. Josaphata’s teaching career began in a preschool educational institution for Ukrainian children, the first of this kind in Galicia, in 1893. Thanks to her efforts, the Congregation established significant number of preschools, orphanages and Christian schools, implemented advanced methodological approaches and developed new curriculum for the Ukrainian children. In their pedagogical activities, the Sisters Servants applied principles of humanization, consistency with nature, individual approach to the personality, reliance on the positives and the national character of education. As a Congregation leader, Sister Josaphata was deeply concerned with the teaching process in preschools and their financial provision. Moreover, she initiated the acquisition of pedagogical education for the teaching Sisters and cared for their constant professional improvement. In addition to educational and spiritual mission, the Sisters Servants provided the medical care and assistance to the sick, poor, disabled and elderly. They ensured psycho-emotional support for their patients and offered various household services. Therefore, active and sacrificial work of the Sisters Servants in Galicia resulted in the formation of the network of Ukrainian preschools, orphanages, and other educational institutions, strengthening the tradition of helping the elderly and sick