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Indoor air quality in kindergartens and primary schools L. Kuby 48, České Budějovice
TUREK, Jan
The bachelor thesis deals with the quality of the internal environment at primary school and kindergarten L. Kuby 48, České Budějovice which are connected in one area. Its substance is the measurement of carbon dioxide, humidity and temperature in relation to the time and its impact on pupils based on my own observations and findings. The thesis also includes a survey on the basis of which was evaluated the connection of primary and nursery schools. The establishment of primary school is dated in 1927. The Kindergarten was established in 2011 in the former area school clubs built in 1969. Quality of internal and external environment is getting worse and is still a hot topic. Indoor air is dependent on many factors which is influenced by. The thesis is divided into two main parts. The first, the theoretical part deals with general and specific knowledge of pollutants occurring in the internal environment of buildings, their increase or decrease and the reasons for change and the overview of concentrations reported in the literature and legislation. In my thesis are mentioned the individual components of indoor air, their causes, sources. Of these substances I focus on a substance which most influences the quality of indoor climate and that is the carbon dioxide or CO2. This compound is introduced in my thesis. There are presented its usual concentration in the interior and the exterior, sources and health consequences which may be caused by high concentrations. The carbon dioxide has according to applicable legislation limiting concentration of 1000 ppm. During the measurements acquired by values in the indoor environment from 705 ppm to 3225 ppm. The threshold of concentration for this thesis was set at 1500 ppm. In the second, the empirical part, were used two methods of processing. The first method was a secondary analysis of data obtained from primary school and kindergarten L. Kuby 48 and on the basis of my investigation. The results of measurement and investigations are presented in my thesis. I present the measured values which were investigated. The survey was conducted in six rooms. For each surveyed room is described the current situation at the time of measurement, specified and graphically measured values. For the measurements in most cases was set up so called the step of measurements for period of two minutes i.e., every two minutes were recorded actual measured values of studied variables, which were then processed and evaluated. In all classes were found to exceed the limit concentrations of carbon dioxide. The temperature and the humidity were acceptable according to the legislative regulations. The second method is the method used for querying the use of quantitative research by technique of an anonymous questionnaire stated in the annex. During this investigation was asked a total of 140 respondents. For the assessment has been used 127 questionnaires. Between those interviewed were children of secondary school, also parents of children from primary school and parents of children from kindergarten. Questionnaires were statistically analysed and evaluated on the basis of the hypothesis. By the following research, were both stated hypotheses confirmed. In the case of the first hypothesis that the combination of primary and nursery schools in one area is an advantage for parents and children 75.78% of respondents answered YES. The remaining 24.22% answered NO or did not answer. When querying on the second hypothesis, whether the parents are satisfied with the operation of primary schools and kindergartens L. Kuby 48, 82.35% of respondents answered YES. The remaining 17.65% of the respondents answered NO or did not answer again. The respondents' answers and evaluation of questionnaires is graphically recorded in the thesis. Parts of this thesis are attached photographs which document the progress of measurements.
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Effect of flash ads on the environment and its comparison with the production of PET bottles
Krejčí, Martin ; Koblovský, Petr (advisor) ; Rod, Aleš (referee)
This bachelor thesis examines the impact of online advertisments created using Flash technology on the environment in the U.S. and then compares it to influence of production of PET bottles on the environment in the U.S.. The thesis describes the functioning of the flash ads. In the analysis there are compared the carbon footprint left-out of the difference in electricity consumption in the enabled and disabled Flash ads and production of PET bottles. The aim of the analysis is to compare the costs of flash advertising and PET bottles in term of environment and to consider revenues resulting from them and to answer the question whether the flash advertisement market is not regulated only because it does not seem originally to damage the environment as much as PET bottles does, and if it should not be regulated.
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Gaseous products of microbial decomposition of organic pollution in constructed wetland used for wastewater treatment.
ŠTĚPÁNEK, Jindřich
This master thesis is dealing with monitoring of gaseous products of microbial decomposition of organic pollution in constructed wetland. This wetland was used for wastewater treatment in a village Slavošovice, Czech Republic. Emissions of CO2, CH4 and N2O were measured in one treatment bed of the system. The emissions were quantified, their seasonal course was followed, and the main factors affecting gaseous emissions were identified. Only 3 % of total C emissions were in form of methane, N2O emissions were negligible and only 1,5 % of nitrogen denitrified were in form of N2O. Carbon and nitrogen balances of the system were estimated.
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Ecological Application of Carbon Dioxide and Its Use in Sustainable Chemistry
Bušta, K. ; Wagner, Zdeněk
Carbon dioxide, which is mostly waste of chemical processes and of combustion processes, finds currently a wide scope of application as a versatile technical gas, as one of basic building blocks for synthesis in organic chemistry. A great many applications in the technical area contribute to the protection of the environment and human health. Zadejte text nebo adresu webu nebo přeložte dokument. Zrušit Poslech Překlad (česky > anglicky) These applications include the use of carbon dioxide as an extraction agent to obtain aromatic and medicinal substances from natural materials in the food and pharmaceutical industries.
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