|
|
Assessment of the effectiveness of advanced oxidation processes via ecotoxicity tests
Procházková, Petra ; Vávrová, Milada (referee) ; Zlámalová Gargošová, Helena (advisor)
Recently, an increasing problem in wastewater treatment is the insufficient removal of organic pollutants. These substances can be toxic to the environment already in a small amount, either acutely or chronically. The goal is therefore to develop of technologies that ensure their effective removal. One possibility is to use advanced oxidation processes. Advanced oxidation processes work on the principle of non-selective oxidation mediated by OH radicals. Several methods such as O3/H2O2 (Peroxone), UV/H2O2 or Fenton´s reaction can be used to generate them. The aim of this thesis was to evaluate the effectiveness of the used advanced oxidation processes in wastewater treatment via ekotoxicity tests. Wastewater samples treated with advanced oxidation processes on the pilot unit showed low values of acute toxicity for selected test organisms (D. magna, T. platyurus, S. alba, L. minor). For the sample of waste water that was treated with the UV/H2O2 on AOP laboratory unit, there was an increase in acute toxicity on the testing organism D. magna and L. minor. The similar effect was observer in the tests with the D. magna with the model samples treated with the same method, while the tests on the L. minor showed a reduction in toxicity.
|
|
|
The Business Plan for the Foundation of a Kindergarten
Soukupová, Šárka ; Procházková, Petra (referee) ; Bayerová, Vladimíra (advisor)
The master´s thesis is the proposal of the business plan for the foundation of a private kindergarten in Ivančice, as a limited liability company. The proposal is based on market needs and analysis of general and business environment, for which is typical the excess demand for services of kindergartens over their existing capacities. Organizational, marketing and especially financial plan backs up viability selected business.
|
|
|
Ecotoxicological evaluation of biochar via organism Folsomia candida
Marcinko, Juraj ; Procházková, Petra (referee) ; Zlámalová Gargošová, Helena (advisor)
The aim of this bachelor thesis was to ecotoxicologically evaluate selected biochar samples and to assess, using a test organism, the possible long-term and short-term effects on soil invertebrates. One of the possible uses of biomass is to convert it into biochar with subsequent application to soil. Soil fauna may be affected after biochar application, therefore ecotoxicological tests in a contact arrangement were chosen. Folsomia candida was used as the test organism. Short-term effects were recorded through escape tests, specifically low abundance of organisms in samples (I) and (T). Significant preference of organisms was observed for sample (O). Samples (I) and (T) had a further impact on the survival of organisms and on the quality of reproduction, where in some cases this caused a resolute impact. Sample (O), at different concentration levels, had no effect on the test organisms. The results of these tests approximate how soil invertebrates could be affected after biochar application.
|
|
| |
|
|
Application of Gender Management in Selected Company
Brabcová, Zdeňka ; Procházková, Petra (referee) ; Rašticová, Martina (advisor)
This diploma thesis is focused on the application of gender management in Bosch Diesel company, situated in Jihlava. In the theoretical part the essential terms and general findings about gender management and work-life balance are explained. The practical part of the thesis deals with the chosen company, analysis of its internal environment and incentives to integrate gender management and deal with the work-life balance. Alongside with the survey in Bosch Diesel, questionnaire research in Honeywell (Brno) was accomplished, which provided an interesting comparison with the questionnaire investigation carried out in Bosch Diesel. The aim of the thesis is to prepare suitable suggestions based on the previous analysis. These suggestions are of informational character and then they could bring positive changes in some companies (and the whole society as well).
|
|
|
The Proposal of Motivation System in the Mining Company
Dubnický, Marek ; Procházková, Petra (referee) ; Mucha, Martin (advisor)
This bachelor thesis deals with a shortcomings of motivational system of employees in the company Hornonitrianske bane Prievidza a.s. The introductory part summarizes the theoretical knowledge and the second part includes familiarization with the company and actual manpower analysis. Consequently based on analysis I suggest a solution which would be optimal for management and simultaneously for employees.
|
|
|
Evaluation of the efficiency of root treatment plants via ecotoxicity tests
Konečná, Kateřina ; Procházková, Petra (referee) ; Zlámalová Gargošová, Helena (advisor)
This bachelor thesis focuses on the evaluation of the efficiency of root treatment plants using appropriately selected ecotoxicity tests. For these purposes, ecotoxicological tests in an aquatic arrangement were used, specifically with the planktonic organism Thamnocephalus platyurus and the plant Lemna minor. The evaluation was performed at a municipal root treatment plant, which treats water for 955 equivalent inhabitants. The results of tests with T. platyurus confirmed that the root treatment plant sufficiently relieves acute toxicity of water. LC50 values were determined for two samples, 213.71 ml / l for the inflow and 388.20 ml / l for the settling tank. At the outflow, these values could no longer be determined due to the low ecotoxicological effect of the water thus treated. For tests with L. minor, IC50 values were also calculated for the first two samples. For Sample No. 1, the IC50 value was calculated to be 311.25 ml / l, for Sample No. 2 to 963.35 ml / l. However, on the basis of tests of direct toxicity of waters with L. minor, it is possible to confirm even in the case of this organism, a good cleansing effect of this root treatment plant.
|
|
|
The role of gut microbiome and autoimmune mechanisms in patients with anorexia nervosa
Kovářová, Tereza ; Procházková, Petra (advisor) ; Hrdý, Jiří (referee)
In addition to gastroenterological diseases, changes in the composition and diversity of the gut microbiota have been also described in several neurological and psychiatric diseases, including eating disorders. My intention in this work is to clarify whether changes in the composition of the intestinal microbiota may be involved in the development of anorexia nervosa (AN) and whether there is a correlation between these changes and possible immunopathological reactions in patients with anorexia nervosa. The study included 30 acute patients (disease duration up to 3 years), 30 patients with a chronic course of the disease (duration longer than 7 years), and 30 healthy controls. The research included analysis of the gut microbiome using high-throughput sequencing (HTS) and determination of serum levels of autoantibodies against selected neuropeptides regulating food intake (by ELISA). Furthermore, serum levels of biomarkers of microbial translocation through the intestinal barrier, intestinal cell damage, and inflammation were detected by ELISA. The levels of pro- and anti-inflammatory cytokines were measured using Luminex instrument. We also introduced an experimental ABA (activity-based anorexia) mouse model, which may contribute significantly to further investigating mechanisms of anorexia...
|
|
| |
|
|
Development of Asaia genus in sand flies and its impact on Leishmania transmission
Stejskalová, Markéta ; Jančářová, Magdaléna (advisor) ; Procházková, Petra (referee)
The composition of the microbiome of insect vectors plays an irreplaceable role in the spread of human pathogens. Current knowledge of the interrelationships between phlebo- tomes, bacteria, and pathogens is quite limited. This thesis focuses on bacterias Asaia sp., which can be localized in a phlebotome microbiome. Both investigated species, Asaia siamensis and Asaia krungthepensis, can colo- nize the gut of Phlebotomus duboscqi, and, in addition, both transstadial transmission between larval stages and contaminative transmission to the next generation has been proved. Considering the superinfection of Ph. duboscqi with Asaia sp. and Leishmania major, the influence of bacteria on the development of leishmania infection has also been demonstrated. Results can have significant epidemiological implications and should be further investigated. Keywords: Phlebotomus, superinfection, Asaia siamensis, Asaia krungthepensis, Leishma- nia major, microbiome 1
|
guest ::
RSS feed.