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Development of the photodetector for interferometry measurement
KOPECKÝ, Jiří
Abstract The first-degree thesis deals with development and construction of moving detector designated to imaging of interference diagrams. There is theoretical introduction to the problems in the first part of the work. Furthermore, various kinds of optical sensors are described. The method of detector and individual parts construction is described in separate paragraph. The detector driving software and one measuring example is presented in the last part of the work.
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Xantofylový cyklus u rostlin a zelených řas: jeho role ve fotosyntetickém aparátu
Masojídek, Jiří ; Kopecký, Jiří ; Koblížek, Michal ; Torzillo, G.
Light-induced conversion of violaxanthin to zeaxanthin, the so-called xanthophyll cycle serves as a major, short-term light acclimation mechanism in higher plants. The role of xanthophylls in thermal dissipation of surplus excitation energy was deduced from the linear relationship between zeaxanthin formation and the magnitude of nonphotochemical quenching. We have studied the role of the xanthophyll cycle in the adaptation of several species of green algae (Chlorella, Scenedesmus, Haematococcus, Chlorococcum, Spongiochloris) to high irradiance. The xanthophyll cycle was found functional in all tested organisms; however its contribution to nonphotochemical quenching is not as significant as in higher plants. We assume that algae rely on other dissipation mechanism(s), which operate along with the xanthophyll cycle-dependent quenching
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Metodika navrhování řasových fotobioreaktorů: matematické modelování hydrodynamického míchání a předpověď parametrů světelného režimu
Papáček, Š. ; Rálek, P. ; Kopecký, Jiří ; Masojídek, Jiří ; Štys, Dalibor ; Petera, K.
Computational fluid dynamics (CFD) and process simulation are important tools for the design and optimisation of biochemical processes. In this contribution, the photobioreactor design methodology based on CFD is proposed. A widely used CFD package (Fluent 6.1, by Fluent Inc.) performs a numerical approximation of microalgae trajectory (pathline) inside tubular photobioreactor. Consequently, prediction of the level of hydrodynamic mixing and corresponding light regime inside the photobioreactor with effective use of strong light by high-density algal culture is possible. In the first approach, the algal suspension is considered as a single-phase incompressible viscous Newtonian fluid, which fills the whole section of the photobioreactor photic zone. Coupling the cell trajectories with the corresponding light conditions, the light histories of single cells are obtained. These records contain complete information about light regime in photobioreactor. Computer simulations for various photobioreactor design parameters and operating conditions allow to establish the quantitative relation between variables representing design and operating parameters and light regime parameters. Thus the problem of optimal PBR design could be resolved.
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The application of bankruptcy and solvency models on companies in insolvency proceedings
Wenig, Julius ; Kolářová, Blanka (advisor) ; Kopecký, Jiří (referee)
This bachelor thesis elaborates the application of seven bankruptcy and three solvency models on six companies. All of the companies are in insolvency proceedings. The theoretical part concerns with description of the models. The practical part is focused on the results of the models applied on companies and rating information capability of the models. The purpose of the bachelor thesis is to evaluate successfulness of information capability of the models and assess the convenience of their usage.
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Pojišťování úvěrových rizik v mezinárodním podnikání na komerční bázi
Kopecký, Jiří ; Taušer, Josef (advisor) ; Jandera, Tomáš (referee)
Úvěrové riziko je jedním z nejvýznamnějších rizik, kterému jsou mezinárodně činné subjekty při prodeji s odloženou splatností nuceny čelit. Práce popisuje vývoj úvěrového rizika v zemích Evropské unie a v USA a také zmiňuje možné příčiny tohoto vývoje. Dále jsou popsány a porovnány možnosti zajištění úvěrového rizika s důrazem na komerční pojištění pohledávek, které lze v současnosti v zemích střední a východní Evropy považovat za produkt s velkým růstovým potenciálem. V práci jsou identifikovány procesy konsolidace a internacionalizace probíhající na světovém i českém trhu pojištění pohledávek a také vývoj tržních podílů nejvýznamnějších pojišťoven včetně budoucích perspektiv. Na základě případové studie je popsána podstata pojištění pohledávek včetně postupů a pravidel pro likvidaci škody.
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