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Kinetic determination of nitrites with spectrophotometric detection
Vašíčková, Pavla ; Nesměrák, Karel (advisor) ; Rychlovský, Petr (referee)
Title: Kinetic determination of nitrites with spectrophotometric detection Annotation: The proposal and optimization of the kinetic determination of nitrites in water samples is the aim of this bachelor thesis. The method is based on the ability of nitrites to catalyze the oxidation of toluidine blue by bromate in acidic media. The course of the reaction is monitored by spectrophotometrically, using a decrease of the absorbance band at 653 nm in the constant period of time from the beginning of the reaction. The dual-chanel manifolds FIA apparatus was proposed and optimized. The calibration dependency in the range of 0,05-1,00 mg ml-1 was measured. The instrumental limit of detection of 0,038 mg ml-1 and limit of quantification of 0,125 mg ml-1 were calculated. The method was applied on real sample of river water. Key words: nitrites, flow-injection analysis, kinetic catalytic methods
Social organization and communication of flying foxes focused on the genus Rousettus
Vašíčková, Pavla ; Jahelková, Helena (advisor) ; Lučan, Radek (referee)
Within the family Pteropodidae there are different types of social systems, depending on the species. Reproductive activity of Egyptian fruit bat (Rousettus aegyptiacus) is based on the latitude, when in milder latitudes individuals tend to be seasonally monoestry, southerly living individuals are less synchronous. Gestation lasts about four months and in most cases one young is born and mother cares about it. Egyptian fruit bats often inhabit caves, while there may live thousands of individuals and even more together. Pteropodidae are focused on plant food, which they choose according to the many criteria. Members of the genus Rousettus belong to the food generalists and their diet includes trees and herbs, from which they consume fruits, flowers, nectar, pollen, shoots and leaves. They were also observed by eating beetles of the family Scarabidae. Flying foxes of the genus Rousettus are special, because they orient by echolocation. They emit short broadband signals through the vibration of the language, whose length ranges from 50-100 s. From other chiropteran families they differ through the way of production the signals. In addition to echolocation senses of smell and sight are key in terms of communication. The smell is important mainly in attracting a partner, for mutual recognition between...
Analysis of degradation of substances of historical pharmaceutical preparations
Vašíčková, Pavla ; Nesměrák, Karel (advisor) ; Kozlík, Petr (referee)
The aim of this thesis is the analysis of transformations of the composition of pharmaceutical preparations from the years 1930-1997. The alkaloids and opium alkaloids are active substances of these pharmaceutical preparations. Pharmaceutical preparations were in form of tablet and injection solution. The presence of active compounds and their degradation products were detected using RP-HPLC with spectrometric detection. The MS/MS fragmentation pathways of compounds found were proposed. The high stability of some active substances was proved (codeine, ethylmorphine and theobromine) while some other compounds were completely decomposed.
Analysis of degradation of substances of historical pharmaceutical preparations
Vašíčková, Pavla ; Nesměrák, Karel (advisor) ; Kozlík, Petr (referee)
The aim of this thesis is the analysis of transformations of the composition of pharmaceutical preparations from the years 1930-1997. The alkaloids and opium alkaloids are active substances of these pharmaceutical preparations. Pharmaceutical preparations were in form of tablet and injection solution. The presence of active compounds and their degradation products were detected using RP-HPLC with spectrometric detection. The MS/MS fragmentation pathways of compounds found were proposed. The high stability of some active substances was proved (codeine, ethylmorphine and theobromine) while some other compounds were completely decomposed.
Behaviour and acoustic communication in Egyptian fruit bat
Vašíčková, Pavla ; Jahelková, Helena (advisor) ; Karadžos, Alexis (referee)
Egyptian fruit bats were observed in Prague Zoo, where stable conditions are provided (year-round food supply, stable temperature and roosts). The colony has bimodal breeding cycle. Births are synchronized and occur on the turn of April and May and in September. The mating occurs throughout the year but there is an increase during lactation and in the period outside parturitions. There is no obvious pattern in cluster dynamics. Bats roost in four clusters (left, middle, upper right and lower right). The presence of clusters throughout the year is stable except upper right cluster. There are changes in the number of clusters and in the number of individuals inside each cluster. Fruit bats occupy approximately the same spots in clusters, however young individuals show the highest variability. An autogrooming is balanced throughout the year, there is no regular pattern in the observation period and even no increase after artificial twilight. From these activities a licking of wing membranes and fur are the most often. The mother cares for her young especially during lactation and weaning, while the care decreases with a development of the young. This is especially true for the licking of the wing membranes. An allogrooming is the most common between male and female during lactation and in the period...
Social organization and communication of flying foxes focused on the genus Rousettus
Vašíčková, Pavla ; Jahelková, Helena (advisor) ; Lučan, Radek (referee)
Within the family Pteropodidae there are different types of social systems, depending on the species. Reproductive activity of Egyptian fruit bat (Rousettus aegyptiacus) is based on the latitude, when in milder latitudes individuals tend to be seasonally monoestry, southerly living individuals are less synchronous. Gestation lasts about four months and in most cases one young is born and mother cares about it. Egyptian fruit bats often inhabit caves, while there may live thousands of individuals and even more together. Pteropodidae are focused on plant food, which they choose according to the many criteria. Members of the genus Rousettus belong to the food generalists and their diet includes trees and herbs, from which they consume fruits, flowers, nectar, pollen, shoots and leaves. They were also observed by eating beetles of the family Scarabidae. Flying foxes of the genus Rousettus are special, because they orient by echolocation. They emit short broadband signals through the vibration of the language, whose length ranges from 50-100 s. From other chiropteran families they differ through the way of production the signals. In addition to echolocation senses of smell and sight are key in terms of communication. The smell is important mainly in attracting a partner, for mutual recognition between...
Kinetic determination of nitrites with spectrophotometric detection
Vašíčková, Pavla ; Nesměrák, Karel (advisor) ; Rychlovský, Petr (referee)
Title: Kinetic determination of nitrites with spectrophotometric detection Annotation: The proposal and optimization of the kinetic determination of nitrites in water samples is the aim of this bachelor thesis. The method is based on the ability of nitrites to catalyze the oxidation of toluidine blue by bromate in acidic media. The course of the reaction is monitored by spectrophotometrically, using a decrease of the absorbance band at 653 nm in the constant period of time from the beginning of the reaction. The dual-chanel manifolds FIA apparatus was proposed and optimized. The calibration dependency in the range of 0,05-1,00 mg ml-1 was measured. The instrumental limit of detection of 0,038 mg ml-1 and limit of quantification of 0,125 mg ml-1 were calculated. The method was applied on real sample of river water. Key words: nitrites, flow-injection analysis, kinetic catalytic methods
Impacts of changes in taxation on consumption of tobacco products, government budget and illegal market in the Czech Republic
Vašíčková, Pavla ; Ševčík, Miroslav (advisor) ; Šlajs, Jan (referee)
The thesis describes and analyzes the excise tax on tobacco products and the relevant market in the Czech Republic. Changes of the excise tax on tobacco products in the Czech Republic and their impacts on the public finance, on sales of tobacco products, and on illegal market trading these products are analyzed as well as effects of government regulation on the tobacco products market. The thesis concludes that increasing excise taxes, due to the Peltzman effect, may lead to originally unintended consequences which are in the contradiction to arguments in favor of the tax increase. Distortions on the tobacco products' market make the efficient regulation difficult.
Accounting of the foreign branch
Vašíčková, Pavla ; Pelák, Jiří (advisor) ; Roubíčková, Jaroslava (referee)
The thesis deals with the accounting of Czech company's branch established in Slovak Republic. The first part is rather theoretical, it shows the branch from a legal point of view and consequently in terms of accounting from the perspective of the founder of the branch itself and from the perspective of the foreign branch. Other chapters are devoted to the practical example of the Czech company's branch established in Slovakia. The branch and its founder are defined in the second chapter of the thesis. The third part deals with the accounting of Slovak branch that means with the various operations carried out during the accounting period from the opening of the accounting books through regular transactions to closing the accounting books. The third chapter also describes how to capture branch in the accounting of its founder. The last part is devoted to correct mistakes, respectively infringement of the Slovak accounting standards, which were found in the accounting of the Slovak branch.
Not all dogs are alike: a cost-benefit analysis of guide and assistance dogs in the Czech Republic
Vašíčková, Pavla ; Hudík, Marek (advisor) ; Schwarz, Jiří (referee)
In the Czech Republic the guide dogs for the blind are recognized as a compensation tool and may be reimbursed up to 100% of the cost; on the other hand, assistance dogs for people in a wheelchair, the deaf, deafblind, or other people with disabilities are not. This thesis explains the concepts of blind person and disabled person, and distinguishes among various types of service dogs. The costs and benefits of guide dogs on one hand, and of assistance dogs for people using a wheelchair on the other, are calculated and the results are compared; it is also examined, whether "favoring" guide dogs by means of providing government support on their acquisition is legitimate, and what it may be caused by. Further, the thesis calculates the maximum possible burden for the state budget if a support for assistance dogs is introduced. It also explores the possible effects of the impact of the introduction of this support on the markets for guide and assistance dogs, respectively.

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5 VAŠÍČKOVÁ, Pavlína
5 Vašíčková, Pavlína
4 Vašíčková, Petra