Eugenia Arvanitis
Angelos RondogiannisDimitrios Lazaris’s Shares
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Investigation of potential sources of pollution on Lefkada by students of the 2nd Experimental Lyceum
This good practice reports an open schooling initiative about the Europen Connect program, which was developed by the 2nd Experimental Lyceum of Leukada and Biology teacher Dr. Dimitrios Ch. Lazaris during 30/11/2022 to 12/04/2023. The activities included a professional in science Forestry and Management of Environment and Natural Resources. It was supported by Dr. Georgios Panselinas Coordinator of the CONNECT Educational Informatics Project who provided information and guidance. This practice was presented at an event that organized the 2nd Experimental Lyceum of Lefkada and on the Connect platform.
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Students in high school put the theory into practice by recycling materials and waste
Recycling is the process of reusing various materials that are no longer usable to humans in their current state. Waste is generally transformed into raw materials from which new goods are made in this process. The aim of the research was to investigate the relationship of the students with recycling in theory and in practice. Specifically, students were asked to collect recyclable items in bags for a two weeks period and to classify them according to the material they were made, after recording them in kind and number. Research shows that the largest share or part of recycled items are plastics, in a percentage 46%, the papers 37%, glasses 12%, electrical devices 4% and tinplate occupies a very small percentage of 1%. Also, the recorded recyclable products differed slightly based on the students’ gender with a few exceptions. Through the implemented project for recyclable products, students learnt about the role and relevance of recycling in the natural world, and their research increased their understanding and respect for the environment.
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Absorption of Europium chloride from zebrafish (Danio rerio) embryos under experimental conditions
Lanthanides (Ln) have an essential role in the pollution of the environment because of their ecotoxicity. The pollution of Ln significantly increased due to their use in industry and agriculture in the last decade. Europium (Eu) is the most reactive lanthanide by far. This metal is contained in many industries wastes and it may enter the food chain. The biochemical behavior of lanthanides has been extensively studied, but there are limited studies on Eu. It is remarkable that Ln react with biologically chemical compounds, affecting competitively and replacing the basic ions of the cell such as calcium (Ca2+) and magnesium (Mg2+). Based on the international literature, there are not much data on the toxic effects of Eu mainly on aquatic organisms. Exposure of zebrafish embryos to Europium indicated that the absorption of the metal from the embryos was taken place from the earliest stages of their development.
