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Energy intensity process to save grass silage volume bags
ONDRÁČEK, Vojtěch
The aim of this work was to measure and evaluate the energy intensity of grass silage during storage in bulk bags. The values were measured on a line consisting of tractor and ma-chinery for storing forage. Further information was obtained from the service line. The results were over-straightened with technical and technological norms for agricultural production and other ways of storing silage.
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Effect of water temperature on early life history in African catfish (Clarias gariepinus)
PROKEŠOVÁ, Markéta
In the present M. Sc. thesis the effect of water temperature (thermal range: 17.4 - 38.6 °C) on early life history (during interval from egg fertilization to full yolk sac depletion by 50 % of larvae; Fe - Re50) in African catfish (Clarias gariepinus) was examined. Length of the incubation period (i. e. interval from egg fertilization to the moment of hatching of 50 % of individuals; Fe - H50), length of the hatching period (i. e. interval from hatching of 5 % of individuals to hatching of 95 % of individuals; H5 - H95), length of the period up to the first intake of exogenous food (i. e. interval from H50 to the first intake of exogenous food by 50 % of individuals; H50 - S50) and length of the period up to the full yolk sac resorption (H50 - Re50) were inversely proportional to the incubation temperature. Period of the yolk sac resorption was significantly prolonged (approximately six times) because of using of exogenous food (compared to treatments without added external food supplies). Embryonic development was theoretically stopped at temperature 15.4 °C and hatching occured after c. 12 effective day-degrees. Size of larvae increased during embryonic and larval period. Size of larvae at H50, S50 and Re50, was inversely proportional dependent on the incubation temperature. Size of individuals at Re50 was increased (approximately twice) because of using of exogenous food (compared to treatments without added external food supplies). Yolk sac volume (YsV) decreased during embryonic and larval period. YsV at H50 was correlated with size of egg and YsV was S50 was inversely proportional to the incubation temperature. A dry weight of yolk sac at H50 represented c. 89 % of total dry weight of hatched larvae. During the period of endogenous feeding c. 75 % of dry weight of egg was converted into the larval somatic tissues. Efficiency of energy conversion during the period of endogenous feeding is lower (60 %). The energetical value of total dry matter and content of sulfur in dry matter was decreasing during the period of endogenous feeding (in order: egg, hatched larvae, larvae at Re50). Content of nitrogen and carbon in dry matter was increasing during the embryonic period and afterwards was decreasing during the larval period. In term of survival, the zone of thermal tolerance for early life history in African catfish ranges from 19 to 33 °C (with thermal optimum between 23 and 30 °C), i. e. this fish belongs to the typical thermophilous species. The suboptimal temperatures lies within intervals 21 - 23 °C and 30 - 33 °C, respectively. Temperatures below 17.5 °C as well above 35.5 °C can be considered as the lethal temperatures already during embryonic period and those below 19 °C and above 33 °C as the lethal ones during larval period, respectively. In term of bioenergy, the thermal optimum for early life history in African catfish lies between 23 - 28 °C.
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state energy conceptions
Stecenková, Marina ; Antoš, Ondřej (advisor) ; Loužek, Marek (referee)
This study deals with situation on energy market of the Czech Republic in aggregate view. There is a common trend of growing dependence on imported energy base materilas into Czech Republic and their growing prices and on the other hand growth of the energy consumption. The study reports historical evolution and trends upon a Czech energy sector after 1990 in wider contaxt including liberalisation of the market for consumers. The selected state instruments, such as state energy conceptions, EU structural funds subventions, renewables legislation and role of the energy savings viewed by state, are analyzed.
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Photovoltaic in the Czech Republic within the framework of EU energy policy
Ullrych, Radek ; Němcová, Ingeborg (advisor) ; Machytka, Daniel (referee)
Members of EU are being pushed by the EU energy policy to exploit renewable energy resources more and more. Energy generation from photovoltaic power-station has become in the Czech Republic one of the most discussed resource. The bachelor's thesis evaluates EU perspective on renewable resources and shows implementation of Europe guidelines into Czech legislative. The thesis also tries to find out what was the reason for massive investments into photovoltaic power-stations. The last part speaks about business plan of the company Jihospol a.s., which is the owner of photovoltaic power-station.
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Energy policy of the European Union
Hasmanová, Věra ; Němcová, Ingeborg (advisor) ; Jiránková, Martina (referee)
Práce analyzuje faktory ovlivňující hlubší spolupráci států EU v sektoru energetiky a možnost vytvoření společné energetické politiky. Zaměřuje se na hlavní překážky větší integrace v tomto sektoru, především na problematiku strategičnosti odvětví, jaderné energie, národní rozdíly mezi státy a rozdílné postoje členských států k hlavním dodavatelům energií do EU. Rozebírá energetické politiky vybraných členských států a hodnotí současné strategie EU, které mají vést k vytvoření hlubší spolupráce. Poukazuje na energetickou bezpečnost jednotlivých států i EU jako celku a s tím související rostoucí závislost na dovozech energií.
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Specialities of business environment, business and cultural specialities of Dalmatia and their influence on cooperation with the Czech Republic
Šućurová, Kristina ; Gullová, Soňa (advisor) ; Klosová, Anna (referee)
This thesis aims to illustrate the business environment of Dalmatia, Croatia and its specialities of economic, cultural and business kind. It furthermore investigates the specific style of business dealings in the region and summarises what entrepreneurs considering business partnership with companies from Dalmatia should expect, how to prepare themselves for business negotiations and which steps to take during them and after signing of the contract. The thesis uses methods of PESTEL and SWOT analyses due to which the specialities of the environment are highlighted and then compared with corresponding elements of Czech environment. From the undertaken analyses it can be stated that Dalmatia fights high unemployment made up mostly by its seasonal element. Up to a fifth of the country's GDP is generated by tourism which creates unfavourable dependence of the economy on a swiftly changeable and volatile branch of the economy. The region is also admittedly characterized by a high share of renewable resources on the production of electrical energy and further potential in this branch, above average density of connection to the internet network in comparison to the rest of the country, and the interest of Czech investors in tourism, banking sector, energetics and food industry.
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Energetická politika EU - reálnost využití obnovitelných zdrojů energie
Fialová, Jitka ; Komárková, Ingeborg (advisor) ; Vošta, Milan (referee)
Diplomová práce mapuje reálnost využívání obnovitelných zdrojů energie ve vazbě na vytýčený indikativní cíl pro OZE v roce 2010. V práci je přiblížen vývoj, který vedl k uznání výroby energie z OZE za jednu z priorit energetické politiky EU. Velký vliv měla a má hrozba změny klimatu a také snaha o udržitelný rozvoj zemí EU. Práce popisuje nejvýznamnější obnovitelné zdroje energie a uvádí hlavní výhody a nevýhody jejich energetického využití včetně systému podpory jejich rozvoje. Důležité jsou hodnotící zprávy Komise, které se týkají rozvoje OZE. Závěr práce shrnuje zjištěné skutečnosti a vyjadřuje se k diskutovanému tématu budoucího rozvoje obnovitelných zdrojů energie.
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Omezené zásoby ropy a alternativní zdroje energie ? energetická závislost a její vliv na světovou ekonomiku
Mišoň, Petr ; Bič, Josef (advisor) ; Turečková, Andrea (referee)
Práce pojednává o postavení ropy ve světové ekonomice jako jedné z nejdůležitějších energetických surovin. Je zde podána hlubší charakteristika ohledně světových zásob ropy, světových trendů ve spotřebě ropy, investic do ropného průmyslu, ekologických dopadů vyvolaných spotřebou ropy, energetické závislosti světové ekonomiky na ropě a charakteristika využití ropy v dopravě. Další část práce je věnována využití a aplikaci alternativních zdrojů energie v dopravě a podrobnější charakteristice biopaliv a vodíku, jako alternativ ke konvenčním palivům.
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New Energy Landscape: Spatial Delimitation Based on the Location of Selected Renewable Sources (Case Study Area - Czech Republic)
Nováková, Eva
The contribution deals with the definition and the spatial delimitation of the new energy landscape which has been described in the Czech Republic only in theory yet. The primary database was created by means of GIS analyses based on combination three layers with installations producing energy from renewable sources - wind power plants, biogas plants and photovoltaic power plants with production capacity over 5MW. On the basis of this layer were spatially delimited areas of influ ence of these devices, and thus the theoretical range of the new energy landscape. The result of this study brings new knowledge about spatial distribution of new energy landscapes on the territory of the Czech Republic. The article should be starting poin t for future scientific researches and discussions, which should help not only to the improvements and modifications of the original methodology, should support the improvement of the decision - making processes associated with spatial planning at the differ ent hierarchical levels (national, regional, local).
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