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The Use of Alternative Sources in the Building Industry
Dvořák, Jakub ; Vymazal, Tomáš (referee) ; Žižková, Nikol (advisor)
This bachelor thesis is focused on the use of waste as alternative raw materials in construction industry. The first part is dedicated to the historical development of waste management, to the valid legislation in the Czech Republic in 2017 and outlines the distribution of waste according to various criteria. The information about waste production and waste management is processed in the form of tables and graphs. The more extensive second part of the thesis uses theoretical knowledge in the field of waste management and on the base of the Waste Separation Catalog is composed a list of waste materials which can be used in construction industry. Further are described the possibilities of suitable waste utilization at production and also mentioned some particular construction products with their features.
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Czech public on homesteading and gardening - June/July 2023
Kyselá, Monika
A significant part of the regular CVVM Our Society survey conducted in June and July 2023 was dedicated to the topic of homesteading and gardening.\n\nThese topics are part of the activities of the Institute of Sociology of the CAS within the framework of the AV21 Food for the Future Strategy.\n\nSpecifically, we investigated whether people engage in various activities related to subsistence farming, whether they produce their own food (fruits, vegetables, eggs, meat, etc.) and if so, where and why, whether people who grow or produce something in their households give these products to someone or exchange them with someone, or with how many people.\n\nWe were also interested in the other side of the story, i.e. whether people themselves receive home-grown or home-produced food from someone.\n\nLast but not least, we also looked at how bio-waste is managed and how the current food supply compares to ten years ago.\n\nAbout half (47%) of people grow their own food in their garden, 7% in their flat or on their balcony.\n\n\nThe most important reasons why people produce their own food are obtaining healthy food (25%), fresh food (24%), saving money (19%) and that it's a hobby (15%).\n\n\nMore than two thirds (69%) of people give or trade some of what they grow or produce in their household to someone.\nPeople are most likely to receive home-grown food from close family members (55%) and friends (50%).\n\n\nThe most common way of managing bio-waste is to use brown bins (57%), and almost half of people compost bio-waste in the garden (47%). Around a quarter of people who sort bio-waste in their household take it to a collection yard (26%) or give the sorted bio-waste to animals (25%). Less than a fifth use bulk containers (18%) or donate it to someone else (17%). The use of vermicomposters (5%) and community gardens (1%) is very marginal.\n\n\nHalf (49%) of people work in their garden on a regular basis, i.e. at least once a month during the season, a third (33%) go foraging for mushrooms, berries or herbs, and 12% keep domestic animals.\n\n\nMore than two-fifths (41%) of respondents believe that their household food supply has not changed between now and ten years ago.
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Biodegradable Waste: School Project for Lower Secondary School
Dvořáková, Kateřina ; Pavlasová, Lenka (advisor) ; Skýbová, Jana (referee)
The proper way to manage biological waste has only recently become a topic of discussion and the public still does not have enough information about it and does not have a comprehensive opinion. In order for bio-waste to be properly managed, knowledge of this topic and positive attitude towards it is necessary, in class this could be achieved by activating pupils through project based education. Teaching in projects is a great way to understand the issue, which can influence pupils' attitudes towards bio-waste management. The aim of this diploma thesis is to create a project on the topic of biodegradable waste, and then to find out how the knowledge and opinions of students about bio-waste have changed. The created project was verified at the lower secondary school, for which it is primarily intended. A total of 54 6th-year pupils was involved in this project. They were given a pretest before the start of the project, finding out the initial knowledge about bio-waste and their opinion on the classification of bio-waste. After the project, the pupils completed a posttest and by comparing the individual answers, it was determined whether and how the knowledge of the tested pupils and their attitude towards the topic changed. The answers of individual pupils in the pretest and posttest were evaluated...
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Characteristics of worm tea - the liquid product of vermicomposting and perspectives of its subsequent use
Klubalová, Kateřina ; Innemanová, Petra (advisor) ; Zídková, Ljuba (referee)
Vermicomposting is a possible method for reducing the amount of landfilled bio- waste. The product of vermicomposting is called worm tea. The thesis deals with the issue of composition and possible usage of worm tea, which is a liquid product of vermicomposting. The aim was to assess the composition and properties of worm tea samples provided from households. Then a mixed sample was tested as a nutrient solution for hydroponic growing. One year operation of a small vermicomposter as a mean of community bio-waste disposal was also assessed in the thesis. Conductivity, pH, content of selected cations and anions and TOC were determined for each worm tea sample. Values of conductivity were then assessed by a correlation test with inhibition values gained from an ecotoxicological test with Sinapis alba. Testing of worm tea as a nutrient solution was done in an opened hydroponic system with Lactuca sativa seedlings. Results show that samples of worm tea are very different and they can not be watered down according to their conductivity as was hypothesised. The largest percentage of samples evinced stimulating qualities in a concentration of 2,5 %. Worm tea can be used as an alternative of nutrient solution for hydroponic growth and it has potential for utilization as an stimulant for germination and...
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The Use of Alternative Sources in the Building Industry
Dvořák, Jakub ; Vymazal, Tomáš (referee) ; Žižková, Nikol (advisor)
This bachelor thesis is focused on the use of waste as alternative raw materials in construction industry. The first part is dedicated to the historical development of waste management, to the valid legislation in the Czech Republic in 2017 and outlines the distribution of waste according to various criteria. The information about waste production and waste management is processed in the form of tables and graphs. The more extensive second part of the thesis uses theoretical knowledge in the field of waste management and on the base of the Waste Separation Catalog is composed a list of waste materials which can be used in construction industry. Further are described the possibilities of suitable waste utilization at production and also mentioned some particular construction products with their features.
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