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Photovoltaic, as an alternative source of electricity
Honka, Pavel ; Moskalík, Jiří (referee) ; Pospíšil, Jiří (advisor)
The work deals with alternative sources of energy and it concentrates on a photovoltaic. There are represented the main types of solar cells, the principles of their functioning and methods of increasing their efficiency. There is also a summary of possibilities of connection of the photovoltaic system and related methods of energy accumulation. On the basis of above mentioned extent of information there is suggested a project of photovoltaic power station which supplies a holiday house by produced energy.
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Lithium Sulphur Batteries
Juračka, M.
S+C cathode material was prepared by simple solid-state reaction in ball mill. Content of sulphur was approximately 80 wt. % in final sample. Cyclic voltammetry and galvanostatic charge/discharge techniques were used for characterization of the samples. Initial discharge capacity observed for S+C sample was 600 mAh/gsulfur. Capacity loss for S+C sample after 30th cycles was 66 %. Cycling loss is due to insoluble polysulfide formation. In this paper I present fundamental characteristics of Li-S batteries. This paper presents a principle of Li-S batteries, fundamental measurement and their evaluation. I present the techniques of measurement and preparation of cathode materials.
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Sodium ion batteries and gel electrolytes
Gottwald, T.
This work deals with the elecdrode materials and gel electrolytes suitable for sodium-ion batteries (Na-ion batteries). In the field of electrode materials were investigated carbon materials based on CR5995 with added SUPERp or NanoTubes for better conduction end LTO material boath working on the principle of insertion of sodium ion in to the electrode material structure. Another part witch this work deals are gel electrolytes for using in this Na-ion batteries, focused on the preparation and subsequent electrochemical and conductivity characterization of gel polymer electrolytes.
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Latentní znalosti o buňce u žáků 8. tříd ZŠ a tercie osmiletého gymnázia
STOČESOVÁ, Lucie
This thesis deals with the knowledge testing of the cell biology at pupils in 8th classes and of tercia lower secondary schools by means of the didactic test. Output knowledge of natural history was tested with 200 students (100 boys and 100 girls) in Příbram. The respondents from secondary school showed better knowledge than pupils of the natural history of the 8th classes of the primary school. Results evaluation is presented in words and also illustrated by tables and graphs.
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The Cell Biology - teaching portfolio for educational thematic area of biology for high school
VEJDĚLKOVÁ, Zdeňka
The goal of the diploma thesis is to create a teaching portfolio for educational thematic area of the cell biology. Teaching materials are intended for high school students learning. The portfolio is aimed at the topic of cell construction. The portfolio is projected for the independent work of students. It can be used both in subject matter explanation and as home preparation. A revision test is a part of the portfolio. Activating part of the portfolio is composed of thematic games that are suitable for the subject matter revision and deepening of knowledge.
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Practical exercises in cell biology curriculum for grammar schools
MANDRYSZOVÁ, Jana
This diploma thesis contains a collection of 29 practical exercises, aimed at cell biology. These excercises were developed on analysis of cell biology curriculum in Framework Education Programme for grammar schools, available biology textbooks and professional literature based on this topic. Practical exercises follow up active and inquiry-based approach of students to biology education. The execises include protocol suggestions for exercises, education goals summary, methodical notes for teachers and model answers.
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Study of mechanical properties and dynamics of biomembranes and single molecules with the use of laser beam - an overview
Jonáš, Alexandr ; Zemánek, Pavel
A micron-sized dielectric particle confined in a laser trap can be employed as a probe for the measurement of forces in the range from piconewtons to hundreds of piconewtons. Thus, if a biological system of interest (e.g. DNA molecule, single myosin or kinesin molecule, cell membrane) is attached to such a probe, its mechanical and dynamical properties (elasticity, viscosty, forces associated with movement) can be studied during its interaction with the environment with unprecedented resolution. This article introduces the basic principles of the laser trapping and force measurement and illustrates on several examples the great potential of the light-based force transducer for exploiting non-invasively the dynamics of basic biological systems.
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