National Repository of Grey Literature 44 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Negative electrodes for sodium ion batteries
Šátek, Dominik ; Libich, Jiří (referee) ; Máca, Josef (advisor)
This bachelor thesis deals with sodium-ion accumulators with focus on negative electrode, introduces basic terms in the field of secondary cells and describes production of accumulators. The result of this work are tested electrodes based on natural carbon and sodium metatitanate. These electrodes are then compared with each other and evaluated.
Impact of technological parameters on electrochemical properties of negative electrode in lithium-ion battery
Živčic, Samuel ; Máca, Josef (referee) ; Libich, Jiří (advisor)
This bachelor thesis deals with the issue of li-ion batteries and consists of two main parts. The first part of the thesis deals with a theory. It describes the functionality of electrochemical cells, especially li-ion cells. Operational principle of the cell is discussed, with the main focus given on negative electrode (anode) and the material it consists of, the natural graphite, mainly his electrochemical properties. Last chapter of theory describes expected impact of technological parameters on electrochemical properties of negative electrode. The second part of the thesis is the practical part. First, it describes procedure of making electrodes in laboratory and afterwards it provides an explanation of used measuring methods, steps taken during the measurement, and the results of the measurements. At the end of the thesis, the influence of pressure and layer thickness on electrochemical properties of natural graphite and on capacitive and current characteristics of negative electrode is evaluated.
Electrochemical properties of negative electrode made from natural and expanded graphite
Priščák, Juraj ; Máca, Josef (referee) ; Libich, Jiří (advisor)
This bachelor thesis deals with lithium-ion accumulators from the prespective of its structure, operation and using. It studies anode materials, focusing on natural and expanded graphite. Explains operation and structure of lithium-ion accumulator. The second part of thesis aims on manufacturing of anode electrodes of natural and expanded graphite. Deals with their measurement of its current a capacity rating. The aim of the thesis is how characteristic of accumulator depends on features of anode materials. In conclusion is sum up and comparation both materials on base of their measurement.
Influence of temperature on parameters of lithium-ion cells
Kuthan, Jiří ; Sedlaříková, Marie (referee) ; Máca, Josef (advisor)
Masters Thesis summarizes the theoretical findings about lithium-ion akumulators. It gives a overview of the basic types of galvanic cells, then deals in detail with the lithium-on cell. It's composition, electrochemical principle of working, thermal dependence, construction and area of application. The thesis describes the basic methods of measuring lithium-on cells, such as cyclic charging and discharging, cyclic voltammetry. The practical part compares selected types of materials for negative elektrodes in different temperatures.
Observation of lead electrode surface by atomic force microscope AFM
Bouška, Marek ; Máca, Josef (referee) ; Bača, Petr (advisor)
This master's thesis is focused on in situ observation of the negative electrode of the lead acid accumulator using atomic force microscopy AFM. Discussed topics are lead acid accumulator, atomic force microscopy, cyclic voltammetry and current knowledge of the in situ observation of the lead acid accumulator using AFM. The main task of this project is assembling the experimental cells, make in situ observation of the negative electrode surface of the lead acid accumulator. In the end evaluate if this method is suitable for the lead acid battery observation.
Design of ecological heating of a family house
Kořínek, Vladimír ; Máca, Josef (referee) ; Jandová, Kristýna (advisor)
This diploma thesis deals with the design of ecological heating for a family house. The main objective is to find the most advantageous variant of the heating and water heating system using a heat pump in cooperation with an alternative heating system. Thermal losses are calculated for the selected object, and several heating designs are made based on the calculations. Then the economic return of the designs is calculated.
Infuence of Technological Parameters on Electrochemical Properties of Negative Electrode in Lithium-ion Cell
Kaňa, Michal ; Máca, Josef (referee) ; Libich, Jiří (advisor)
This diploma thesis deals with lithium-ion batteries. It is focused on negative electrode on grafit based. The goal of this thesis is to show the problematics of lithium-ion batteries together with possibilities for improvement of their basic parametres as capacity and current elektricity loadability. The first part is focused on the description of functionality of lithiumion battery. The second part is practical and it is focused on production of negative electrodes from natural graphite 280H which has different thickness and compression pressure. The third part describes preparation of negative electrodes from natural graphite 280H and also includes results of measurement. In the last part are different types of negative electrodes from natural graphite 280H compared and evaluated including the determination of conclusions. This comparison and evaluation based on obtained data.
Role of alarmins in perioperative medicine.
Máca, Jan ; Holub, Michal (advisor) ; Závada, Josef (referee) ; Veselý, Jaroslav (referee)
Introduction: Inflammatory response (IR) is a fundamental reaction to the cell and tissue injury. It is aimed at correcting the pathologic condition and maintaining the structural and functional integrity of the organism. The insult with too extensive or prolonged effect can lead to dysregulation of IR to the systemic level. Major abdominal surgery (MAS) can be considered as a potentially significant insult. Alarmins are endogenous, intracellular proteins that are passively or actively released upon the cell injury to extracellular space where they express their bioactive effect. Alarmins has therefore potential reflect the degree of surgical injury. Purpose: The main goal of the study was elucidating the role of selected alarmins in inflammatory response after MAS. The secondary aims were: 1) determining the relationship between alarmins and outcome prediction, 2) to determine relationship of alarmins and place of surgical intervention, 3) to determine correlation between alarmins and some of the surgery characteristics, e.g. length of surgery, blood loss, and intraoperative fluid load, 4) compare injury caused by laparoscopy and open surgery reflected by alarmins, and 5) to confirm previous results by determining the role of alarmins in surgical injury in subgroup of patients undergoing colorectal...
Test Rig Design Proposal for the Experimental Validation of Transmission Parameters in Open Loop Torque Condition
Máca, Jiří ; Janoušek, Michal (referee) ; Prokop, Aleš (advisor)
This final diploma thesis deals with the issue of vibration and noise measurement of transmission devices. The research part describes the basic issues of noise and vibration generation, their measurement, as well as sources of vibrations in gear units. The practical part deals with the design proposal of the attachment of the experimental single-stage gearbox and the load dynamometer to the anechoic chamber including the drawings. Further, by checking the modal properties of the proposed test stand, using the finite element method, the analytical and numerical control of the torsional vibrations of the rotating parts with respect to the expected frequency ranges of use.
Automated workstation for volume expansion temperature coefficient determination of liquids
Silvestr, Jiří ; Hylský, Josef (referee) ; Máca, Josef (advisor)
Density, Volume, The temperature dependence, Automatizion, Thermal expansion, Measurement,

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See also: similar author names
2 Maca, Jakub
1 Máca, Jan
2 Máca, Jiří
3 Máca, Josef