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Iron fertilization of the Southern ocean
Přibylová, Petra ; Koblížek, Michal (advisor) ; Nedbalová, Linda (referee)
This thesis summarizes the current knowledge of the effect of iron on the growth of plankton in relation to lowering the concentration of CO2 in the atmosphere. Iron is a limiting factor for phytoplankton growth in large parts of the Pacific Ocean and the Southern Ocean. This thesis is focused on the Southern ocean, where it chronologically describes natural and artificial experiments, where the objective was to uncover the possibilities of artificial iron fertilization of the ocean. The iron fertilization experiments were based on supplying the upper layer of the ocean with an iron solution, which resulted in an increase in phytoplankton growth and chlorophyll concentration. The reaction of plankton to a natural iron input via upwelling was also observed. In these cases an increase of phytoplankton and chlorophyll was observed. Nowadays, the lively discussed possibility of large-scale fertilization is restricted by the United Nations due to insufficient knowledge and concerns of geoengineering.
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Distributed WEB framework
Bondari, Serghei ; Dokulil, Jiří (referee) ; Zavoral, Filip (advisor)
Develop a distributed component based web framework built upon the PHP5 programming language that allows independent component development, deployment and active component re-usage. A component of the work will recommend and implement a component interface definition schema and effective middleware layer that facilitates events, messaging and data exchange between various components.
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The relationship between an attorney and his client under the contract of mandate
Dočekal, Petr ; Patěk, Daniel (advisor) ; Horáček, Vít (referee)
67 The relation between the attorney-at-law and his client based on the mandate contract In my dissertation I have described the relation between the attorney-at-law and his client based on the mandate contract and the legal regulations, what refers about it. This relation is established generally by signature of the contract of rendition of legal aid, but sometimes the relation between attorney-at-law and client comes into being by the decision of court or by institution of Czech bar association. At the beginning of my dissertation I explicated the notions as attorney-at-law, client, mandate contract and then in the most important chapter the content of this relation. It means discretions and duties, what have the subjects of this relation. All of these discretions and duties are defined in the Advocacy Act, in the Commercial Code and in professional regulations of the Czech bar association for example Ethics Code, Disciplinary Code or Layer's fee. I mentioned about the duty of the attorney-at-law to defend and promote of the interests of client, duty to give notice to the client, duty to behave conform the client's suggestions, duty to reticence, duty to have the adequate documentation, duty to insure against the responsibility for damage, discretion of the fee - contract fee or noncontractual fee and so...
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RESIDENTAL BUILDING SLAVKOV U BRNA. TECHNOLOGICAL PHASE OF FINISHING WORKS.
Šmerda, Michal ; Rychtecký, Martin (referee) ; Kovářová, Barbora (advisor)
In the thesis I deal with the internal finishing work of a residential building in Slavkov u Brna. I elaborated in detail the technical regulations for the implementation of internal partition walls, interior plaster and floor structures. For floor structures I developed to compare the spreading layers under which I has elected a suitable material for this construction. This part is followed by the appropriate machine assembly, quality control work, the draft site facilities and transport links. I has also drawn up a sustainability plan object, construction budget and schedule of work.
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Framework Wicket
Kvapil, Hynek ; Pavlíčková, Jarmila (advisor) ; Pecinovský, Rudolf (referee)
The subject of this bachelor thesis is Java framework Apache Wicket that is instrumental for easier way of web application presentation layer development. Primarily it tries introducing readers to its fundamental features, architecture and component based approach to web application development. This bachelor thesis does not aim to become tutorial for this framework, but it can be helpful in selection among similar specialized frameworks. Whereas, it aims to help readers to make more detailed imagination of Apache Wicket offers.
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Inclusion of the stratosphere into global climate model
Borovička, Pavel ; Halenka, Tomáš (advisor) ; Bednář, Jan (referee)
The target of this work is to study an inclusion of the stratosphere in a global climate model and a sensitivity of model results on a choice of external parameters, which describe the model stratosphere. As the tool for this target a general circulation model called SPEEDY with spectral core based on simplified parametrizations and primitive-equation dynamics was used, the complex model CCM3 was used for discussion as well. The results of configuration of the model SPEEDY used in this study are presented as monthly-mean statistics outputs. The sensitivity of the model climate on the choice of the parameters of the model stratosphere is then studied by an application of linear regression model on an long-term monthly-means of selected meteorological quantities in the 1952-1992 period. The portion of the shortwave radiance absorbed by ozone layer plays here the role of the independent variable. It is also the only one external parameter, which characterize the stratosphere in the SPEEDY model. Then we look on the development of the model climatology in dependence of the parametrization of the model stratosphere according to the value of linear coefficient of the linear dependence on the portion of the absorbed shortwave radiation, eventually according to the value of linear and quadratic coefficient of the...
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Gothic painted decorations in the Gallery of the castle in Lidzbark Warminski a bohemian track in northern poland ii.: materials signs of provenance
Hradil, David ; Hradilová, J. ; Švarcová, Silvie ; Bezdička, Petr ; Čermáková, Zdeňka ; Bartlová, M.
Materials research was aimed at finding specific characteristics, which could indicate the provenance of mural paintings uncovered in Bishops castle in Lidzbark Warmiński, northeast Poland. An expected relation of these murals to Bohemian artistic workshops, which were active in the 14th century at the Emperor Charles IV’s court in Prague, was supported by further exact data. The lead-tin yellow – type II was identified by X-ray microdiffraction; up to the present day, this uncommon modification of the pigment was proved solely in the Bohemian painting of the 14th century (e.g. Master of Třeboň altarpiece) and in the Italian painting of the 14th to 16th century. Nickel is an element accompanying natural iron-based pigments and was found both in the painting and the drawing, respectively. It is possible to demonstrate that this admixture indicates the source locality of the pigment in Lower Silesia, which belonged to the Kingdom of Bohemia in the 14th century and was exploited for chrysoprases – green gemstones frequently appearing in Bohemian jewellery and wall decorations (St. Wenceslas chapel in the Prague’s cathedral, Karlštejn Castle). Lidzbark murals exhibit features similar to the panel painting, e.g. the use of tempera, natural chalk in the preparatory layer, lead pigments and madder lakes in the painting. The madder was extracted from the wool fibres, which are still clearly visible in the samples.
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Thermal analysis of interaction of epidermal lipids II
Vrbatová, Naděžda ; Musilová, Marie (advisor) ; Doležal, Pavel (referee)
Thermal analysis of interactions of epidermal lipids II Nad_žda Vrbatová, degree work, June 2008 This work targets the assessment of interactions of epidermal lipids through the use of differential scanning calorimetry. It is trying to find a solution to the section relating to water existence in assessed samples. The moisture content of corner layer is very diverse. It depends on the bonding ability of stratum corneum, conditional especially on the lipids. The aim of this work is to detect phase conversions of water and their comparing with two types of crucibles. It is also focused on the question of moisture quantity that are epidermis and stratum corneum able to bond to each other. This work shows calorimetry characteristics of tris buffer and their comparing with water as well as the impact of tris buffer to calorimetry characteristics of lipidic membrane components. Calorimetry assessment of the emulsive systém (made up of cetylalcohol and white wax) is introduced here, too.
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Quality of Service Provision in Wireless Networks
Hnilička, Miroslav ; Janeček, Jan (advisor) ; Peterka, Jiří (referee)
This thesis aims at quality of service provisioning mechanisms in wireless packet networks. The main target of the work is multiple hops wireless networks area in which the problem is more general than in access networks. Theoretical part of the thesis analyses the problem and shows detailed insight of possible solutions. Practical part of the thesis focuses on more specific problem. Impacts of using different particular mechanisms on link and network layers are studied here, considering wireless mesh networks based on IEEE 802.11b technology (WiFi). Simulation model MeshQoS is designed on the basis of discrete simulation system OMNeT++. Inside this model, there are implemented two routing protocols - AODV defined by IETF and newly proposed hybrid opportunistic protocol OMR (OpportunisticMesh Routing). Results of experiments with this model helps to get the notion of the level of quality of services achievable in particular mesh networks configurations. They also show the positive effects of using opportunistic routing principle. In most scenarios OMR provide much lower latency, higher delivery probability and higher throughput.
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THE INVESTIGATION OF AN Al7075 ALLOY PREPARED BY SPARK PLASMA SINTERING OF MILLED POWDERS
Molnárová, O. ; Málek, P. ; Nemeth, G. ; Kozlík, J. ; Lukáč, František ; Chráska, Tomáš ; Cinert, Jakub
Atomized powder of an Al7075 alloy was high energy ball milled at room and cryogenic temperatures and compacted by spark plasma sintering (SPS) method. The influence of processing parameters on phase composition and microstructure was studied by X-ray diffraction, light and scanning electron microscopy. The mechanical properties were characterized by microhardness measurements. The atomized powder contained a large volume fraction of intermetallic phases located predominantly in continuous layers separating cells or dendrites in the interior of individual powder particles. Consolidation by SPS destroyed partially this morphology and replaced it by individual particles located at boundaries of original powder particles, at cell boundaries or arranged in chains in previous dendritic regions. High energy milling destroyed most intermetallic particles and enriched the matrix by solute atoms. The high deformation energy introduced into the powder during milling enhanced microhardness up to 220 HV. Consolidation of milled powders by SPS led to the formation of very fine-grained structure with the grain size even below 1 μm and with the fraction of high-angle boundaries about 0.9. Two main types of heterogeneously distributed precipitates were found. The irregularly shaped precipitates with a size about 1 μm seemed to encompass areas with rod like nano-precipitates in most samples. A drop in microhardness to 118HV was observed after SPS, predominantly due to a release of introduced deformation energy.
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