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Determination of hormones in wastewater
Zouharová, Kamila ; Tulková, Tereza (referee) ; Vávrová, Milada (advisor)
The presented theoretical and practical study was focused on a single unit of drugs – hormones. In the present study were characterized in detail hormones as drugs or medical ressource and their mode of effect on the human body. Another important part of this study was focused on the evaluate of the incidence of estrogens in the environment and their possible impact on the aquatic ecosystem, mainly for waste water. The last part of study was processed analytical problems of determination of hormones. There were introduced pre-analytical and analytical methods – methods of isolation of hormones from the waste water and methods of thein final determination, which were based mainly on the separation processes.
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Hormones and their presence in environmental
Sučková, Tereza ; Dvořáková, Petra (referee) ; Vávrová, Milada (advisor)
This thesis deals with the issue of hormones in the environment and analytical methods for the determination of hormonal substances in water and soil ecosystems. The thesis includes an overview of important hormone groups (divided into categories according to their chemical structure) and basic information about properties of chosen hormones, their sources and impacts on the environment. The next focuses upon methods of determination of hormones in soil and water ecosystems. Finally, a standard operational manual for analysis of estrogens in surface water has been created and is provided herein.
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Ecotoxicity of substances with hormonal effect
Cvikýřová, Zuzana ; Vávrová, Milada (referee) ; Zlámalová Gargošová, Helena (advisor)
This bachelor thesis deals with the fate and ecotoxicity of chosen substances with hormonal effect in the environment. This group of compounds covers steroid hormones, which are produced for these effects, but also a lot of xenobiotics, showing similar activity. The substances disrupt the endocrine system by various mechanisms. They can cause feminization, masculinization, disruption of reproduction, etc. In terms of chemical structure they belong to the group of phthalates, polychlorinated biphenyls, pesticides, heavy metals and others. The impact of these substances, especially on the aquatic ecosystem, which becomes their reservoir in most cases, was assessed.
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Effect of physical exercise on mood changes
LÍSA, Jan
Aim of paper is to find out what effects do physical exercises have on the psychical part of the person. Theoretical part speaks about psychology and emotions from the psychical view, and also from the biological view. It speaks about the effect of sport, group mentality and the way people in a group perceive the sport. It also mentions biological processes in the body and the substances that are made during the physical exertion. Methodical parts speaks about how we will put out hypothesis to the test. That is how, where, how long and under what circumstances will we do our experiement, and how will we evaluate it. Conclution is made of results, which containt tables and graphs with collected data and their explanation in text, evaluation and personal comments. Annexes contain the prototype of the used questionnaire. Results showed, that theoretical hypothesis, that physical activities are beneficial for a human, and statistical hypothesis both proved correct, and statistical one in 83,3% of the cases.
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Activity of the thyroid gland of cattle
KŘÍŽOVÁ, Zuzana
The thesis deals with the evaluation of the impact of different quantities and forms of iodine in ration dairy cows on the concentration of hormones of the thyroid in the blood plasma. The experiment was done with a herd of Red cows breeding in the conversion to breed in the breeding of Holstein dairy cows in Klatovy. Iodine was given in both inorganic and organic form. Before experimenting, the value of total and free forms of hormones was very low. During the experiment, increased concentrations of hormones in connection with the intake of inorganic iodine, the significant deviations showed free forms of thyroid hoemones. Nevertheless, the addition of organic iodine was not fully substituted for the reduction of inorganic iodine content. The thesis also discusses the assessment of the thyroid status by Czech red cattlebreeding on the school farm. The aim was to compare the activity of the thyroid gland in high-yield dairy cows breeding in a barn environment and cattle on pasture reared cattle. For red cattle reared on pasture, there were characteristically higher concentration levels of total and free hormones compared with high yield dairy cows. Nevertheless, in comparison with the reference value,there was a concentration of TT4 for Czech red cattlelower, it coresponded well as dairy cows, rather lower iodine supply. In connection with the rise (higher content) TT4, possibly fT4, there was a similar tendency for the TT3 and fT3, so we can´t assume a deeper state of iodine deficiencies and its associationwith an underactive thyroid gland.
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Postnatal dynamics of thyroid hormones in lambs
BURLEOVÁ, Barbora
The aim of my work was to monitor and valorize of postnatal dynamics of thyroid hormones, thyroxine (TT4), triiodothyronine (TT3) and its free fractions (FT3 and FT4), in lambs up to 60 days of age. During the experiment 26 lambs were devided into two groups according to sex and were supplemented by iodine in concentration 0,7 ? 5 mg. Standard directed day ration for sheep is average 0,3 mg of iodine in 1 kilogram of dry mass (DM). One of the groups was also supplemented by selenium in concentration 0,2 ? 0,4 mg in 1 kilogram of DM.
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Thyroid hormones in blood plasma of dairy cows
KŘÍŽOVÁ, Zuzana
Thesis deals with the evaluation of the impact of different quantities and forms of iodine in ration dairy cows on the concentration of hormones of the thyroid in the blood plasma. Iodine was given in the inorganic (Vitamix S7+) and organic form (UNI-SATURAN J). The experiment was done with a herd of Red cows fleckvieh breeding in the conversion to breed in the breeding of Holstein dairy cows in distrikt Klatovy. The average concentration of thyroxine (TT4) before experiment was 50.91+-12.96 nmol/1, 1.6+-0.53 nmol/l of trijodthyronine (TT3). Free forms of hormones showed: FT4 1.09+-0.06 pmol/l and FT3 2.5+-0.08 pmol/l. Free forms of hormones showed more considerable divergencies.
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Analysis of EU´s trade disputes over beef produced using growth hormones
Bradáčová, Pavlína ; Štěrbová, Ludmila (advisor) ; Machková, Hana (referee)
The first chapter of the work deals with the circumstances that preceded the controversy on hormone-treated beef between the EU and the U.S. and the EU and Canada. The second chapter analyzes the international beef trade (production, consumption, imports, exports). Finally, the third chapter analyzes in detail the controversy over imports of hormone-treated beef into the EU, ie. the subject of the dispute, the parties, its result and outcome of the appeal. This chapter also discusses the reasons for the complexity of the dispute and its importance for the dispute settlement system under the WTO and for the SPS rules.
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