National Repository of Grey Literature 10 records found  Search took 0.01 seconds. 
Evolutionary and embryonic formation of the prechordal part of vertebrate head
Marková, Kristýna ; Černý, Robert (advisor) ; Hovořáková, Mária (referee)
Rostral or the prechordal part of the vertebrate head is one of the key features that distinguishes us from other chordates. A part of this so-called New head is also a prechordal plate, also known as the prechordal or premandibular mesoderm, axial mesoderm or ventral cranial mesoderm. This most rostral population of the mesendoderm should develop from the anterior end of the notochord. It forms the head mesenchyme, and later contributes to the so-called head cavities and ocular muscles. In this work, I analyze the earliest development of the prechordal plate in sturgeon, gar and bichir, in which the endodermal preoral gut has recently been described as the most rostral head structure. Using histological techniques, immunohistochemistry, and in situ hybridization, developmental relationship of the prechordal plate and preoral gut has been analyzed. and In the rostral part of the forming head, it is the preoral gut as clearly defined endodermal epithelium, that appears first. The mesenchymal population of the prechordal plate arises only later, and has dual embryonic origin. Its posterior part takes its origin from the anterior end of the notochord, wheras its anterior part develops from the preoral gut around the rostral end of the brain. The prechordal plate later expands to the lateral region near...
The prechordal plate during embryogenesis of the vertebrate head
Marková, Kristýna ; Černý, Robert (advisor) ; Soukup, Vladimír (referee)
The prechordal plate is generally described as a population of axial mesendodermal cells that is formed during early embryonic development, in the rostral- most area of the vertebrate head. The population of the prechordal plate cells is specific for vertebrate, and evolution of the vertebrate head was one of the key steps during vertebrate evolution. During vertebrate embryogenesis, the prechordal plate cells are pushed by the growth of the forebrain, until only some small population remains in front of the notochord, which later differentiate into mesodermal cells. The precise morphogenesis of this prechordal mesoderm, differs across vertebrates, but in most vertebrates produces a pair of head cavities, which are called premandibular. Within the organogenesis of vertebrates, extrinsic eye muscles are formed from these mesodermal cells and cavities. The prechordal plate, however is also referred to as one of the important centers that control the formation of the vertebrate head during early embryogenesis, since its removal or inhibition of important signals caused various disorders and embryonic dead. This thesis aims to summarize the information on the formation and function of the prechordal plate cells during vertebrate embryogenesis. Key words: prechordal plate; prechordal mesoderm; head...
Refractive index gradient in the cubozoan eye: specific gene expression analysis
Marková, Kristýna
1. Abstract Refractive index gradient in the cubozoan eye: specific gene expression analysis Lenses are spread through animal kingdom as an improvement of different eye types. Despite conservation of some key regulators and shared use of photopigment opsin, eyes and their lenses develop by variable mechanisms impeaching their monophyletic origin. Tripedalia cystophora (T. c), a cubozoan jellyfish, is an emerging new model for studying eye evolution. The presence of advanced lens-containing eyes (firstly incident within metazoans in this phylum of Cnidaria), the two types of lesser eyes, the use of pax gene and vertebrate type of phototransduction cascade for eye establishment make this jellyfish an useful tool for comparing eye development and different evolutionary strategies. We focused on the lenses of T.c. and studied formation of their refractive index gradient to reveal its mechanism. Using new antibodies raised against J1 and J2 crystallins (proteins of the T. c. lens), TEM and histology we found that graded refractive index is of protein origin and formed by unequal accumulation of proteins (particularly J1 and J2 crystallins) in different layers of the lens. We have shown that J1 crystallin occurs also in the lesser eyes (ocelli) suggesting how the lens mass can evolved. The synthesis of J2...
The Consumer dispute resolution
Marková, Kristýna ; Švarc, Zbyněk (advisor) ; Hásová, Jiřina (referee)
The thesis deals with the consumer dispute and ways how to resolve it. The main aim of this thesis is to analyze and evaluate if disadvantages of court proceeding in the Czech republic still overweight its advantages, and thus whether the topic of alternative disputes resolution of consumer disputes is actual, then to give an overview and evaluation of alternative disputes resolution for consumer dispute which the Czech republic offers in the context of Community Law of the European Union, and finally to outline the development of future initiatives in this area.
Biologically active substances contained in tea, coffee and cocoa
Marková, Kristýna ; Hejtmánková, Alena (advisor) ; Jadrná, Petra (referee)
This bachelor thesis deals with the effects and chemical structures of selected biologically active substances contained in tea, coffee, and cocoa. The tea plant (Camellia) belongs to the family Theaceae. Several varieties are cultivated, but all of them are referred to as the Camellia sinensisvariety. The main products of the tea plant are leaves from which tea is produced. Catechins (8 - 18 %) are the most meaningful substances in tea, they belong to the group of polyphenolic substances, which have strong antioxidant properties. The coffee plant (Coffea) belongs to the family Rubiaceae. The most significant varieties from this family are Coffeaarabica and Coffearobusta; their beans are used for the production of coffee. Coffee is a sought-after stimulating beverage. Caffeine (0.7 - 2.5 %) is the most important substance, it is included in the group of alkaloids. Itis a central nervous system stimulant, affecting the heart beat and the cardiovascular system. The cocoa tree (Theobroma) belongs to the family Sterculiaceae. A significant representative of this family is Theobroma cacao and its groups Criollo, Forastero, and Trinitario. Cocoa is particularly rich in flavonoids (20 %) which also belong to the group of polyphenolic substances. They are strong antioxidants; in adequate quantity, they have positive effects on health. Tea, coffee, and cocoa also contain vitamins and minerals. In the organism, they may form part of a structure of somatic cells and enzymes, some of them are activators of enzymes, and they also act as molecule transporters in metabolic reactions. Vitamin C and vitamin E are most frequently present; minerals potassium and phosphorus have the highest content in these stimulating products. The total concentration of biologically active substances is primarily affected by the family of the relevant type and form of processing. Raw materials that have not undergone fermentation or roasting contain more biologically active substances than those that have been treated.
Factoring in Accounting and Practical View
Marková, Kristýna ; Roubíčková, Jaroslava (advisor) ; Müllerová, Libuše (referee)
This diploma thesis is concerned with a financial tool called factoring. It involves an assignment of account receivables before their maturity date onto the factoring company and thus taking over their administration while providing immediate cash to the original creditor in order to sustain liquidity. Legislation of this method of financing is not yet fully resolved therefore it is crucial to focus primarily on the ecnomic substance of individual contracts. Basically, there are two major types of factoring: recourse and non-recourse depending on the level of assumed risk, together with transfer of ownerwhip of the account receivable. This fundamental distinction is inevitable for correct financial reporting which should reflect not only the accounting principles but also it should respect other implications, such as taxation.
Business plan – platform for home cooking lessons
Marková, Kristýna ; Hartman, Ladislav (advisor) ; Gazdík, Martin (referee)
Business plan is an important document any start-up, who is standing in front of a decision of realisation a new business idea. The main goal of this master thesis is complex business plan and evaluation of profitability and attractively of CookForMe, a platform where can people contact yourself and order home cooking lessons by not professional chef on the Czech market. The thesis is divided into two sections, theoretical and practical. Theoretical part presents necessary information for the beginning entrepreneur and describes the structure of the business plan including Lean Canvas. Practical part is based on the theoretical part and contains business plan of CookForMe company, which contains necessary and well provided analysis of cooking lessons market and design a new web platform, which will be attractive.
Marketing plan of beach volleyball arenas in the Czech Republic
Marková, Kristýna ; Kotáb, Jiří (advisor) ; Tahal, Radek (referee)
The popularity of beach volleyball is rising especially thanks to the Olympic Games 2012 in London. Czech professionals Markéta Sluková with her partner Kristýna Sluková got there unbelievable 5th place. The first part of this thesis would like to summarize theoretical knowledge of sport marketing and marketing plan of sport product. The second part would like to analyze marketing mix of beach volleyball arenas in the Czech Republic. According to the knowledge gained by this analysis will be created Marketing Plan of Beach Volleyball Arena in Benešov u Prahy. Finally this thesis would like to be an inspiration for existing and potential arenas which would like to exploit this market opportunity to provide beach services.
Environmental issues on the pages of magazines for children and youth
MARKOVÁ, Kristýna
Diploma thesis deals with the environmental issue on the pages of magazines for children and youth. In the theoretical part I focus on the cross-cutting theme of environmental education based on the Framework of Educational Programme that aimes at helping young people to build socially desirable behavior and values necessary for their future life. The practical part presents the content analysis of the specified titles in order to analyse the occurence of the issue. An important part of the thesis is the incorporation of the magazines into the environmental education and elaborating teaching units and their implementation into the educational process on the 2nd level of primary school.
Political Marketing in the USA and New Information Technologies
Marková, Kristýna ; Štědroň, Bohumír (advisor) ; Stříteský, Václav (referee)
This thesis deals about political marketing and its development in the United States of America. My analysis focuses mostly on a part of the political marketing which makes use of 'new information technologies' in political campaigns. The main aim of this thesis is to find out a way how to use information technologies successfully in political campaigns. The analysis offers an information from the campaigns that have been made recently. The results of the research show us that the success in the political marketing can be definitely achieved by the appropriate way of promotion in mass media. Each mass media offers different marketing tools and influences different parts of the electorate.

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