Nowadays, magnesium alloys are used in many sectors of human activity, particularly in the aerospace and automotive industries, due to a combination of good mechanical properties and low density of magnesium. Recently, however, the attention is paid to the possibility of using magnesium alloys in the medical field, mainly due to the chemical properties of magnesium. The diploma thesis is focused on evaluating of the corrosion behavior of AZ31alloy and AZ61 alloys in SBF solutions that are solutions simulating body fluids. The alloys were subjected to immersion test in Hank’s solutions for time span from 24 to 1008 hours. The corrosion process was evaluated based on several factors: alloy composition, time and pH changes. The thesis also describes in detail the methodology for establishing magnesium and zinc by method of flame absorption spektrometry (F AAS). The determination of aluminum was carried out by atomic absorption spectrometry with electrothermal atomization (ET AAS).

This diploma thesis deals with acid-base and electrolytic behavior of hyaluronan solutions at different ionic strength. Acid-base behavior of hyaluronan was investigated by acid-base titrations which were carried out with two different methods, acid and alkaline acid-base titration. Dissociation constants at different ionic strength at zero degree of dissociation and at 50% degree of dissociation were evaluated from the results of acid-base titrations. Dissociation constants obtained from acid acid-base titrations have values between 3,0 and 3,6. Dissociation constants obtained from alkaline acid-base titrations are not very informative because their values are much higher than the expected values. The study of degradation of hyaluronan during acid-base titration was performed to complete study of acid-base behavior. Electrolytic behavior of hyaluronan solution was performed by conductometric titrations in three different environments.

The aim of the project was to prepare the given model of the current path in the environment of the SolidWorks programme, in order to simulate the flow path in the environment of the Ansys programme, where there was calculated the distribution of current density,voltage drops and heat loss on the the specified current track according to specified conditions. The obtained results are analyzed at the conclusion of this work.

The main theme of the thesis is to examine the influence of alcohol on the speech apparatus and speech signal. The first part is focused on symptoms and detection of alcohol concentration in the human body. The following part describes somescientific publications and projects, which dealt witha a similar theme. Also the czech documentation to german database ALC was created. Based on phonetic knowledge, Czech text was compiled. Different speakers were reading this text so we go tour own database of alcoholic and sober speech. Samples from individual speakers are processed using linear prediction, formant and cepstral analysis in MATLAB and the effect of alcohol on selected parameters of speech signal is evaluated.

This thesis deals with using thermography to detect defect of photovoltaic panels.There is research of the effect of climatic conditions to photovoltaic panel temperature. At the end of the thesis is degradation of pv panels calculated.

This master’s thesis deals with user influence on miniature antennas in mobile application. Electrically small antennas including fundamental performance properties and limitations are introduced in the theoretical section of this thesis. This section also deals with microstrip antennas and their common types. The accent is on PIFA antennas, their typical constructions and methods of miniaturization. In the practical section, dual-band PIFA antenna for operation at frequencies of systems GSM900 and GSM1800 is designed with the assistance of electromagnetic field simulator CST Microwave Studio. On this type of antenna, the user influence on impedance matching and radiation pattern in data mode (the user is typing message or browsing with the phone) is investigated. For this purpose the hand phantom, corresponding to author’s right hand, was made from agar based material. For typical position of human hand is designed matching network, which eliminate the user influence and ensure correct function of antenna.

The Master´s Thesis „Stress evaluation, coping and reduction” deals with analyzing stress in students, ordinary workers and top managers. The theoretical part analyzes stress, effects of stress, its impact on human health, his work / study results and overall his life. The practical part is concerned with the influence of stress on students, ordinary workers and top managers, using a questionnaire. On the basis of the analysis is specified what causes stress for the various groups, how most respondents solve the stress. The conclusion of the work includes the proposal of effective coping and stress reduction for each group of respondents.

The main topic of this thesis is the issue of the consolidation process of the financial statements of the chosen company and the subsequent evaluation of the performance of the consolidated group before and after the change in consolidation scope. The first part is focused on theoretical knowledges in this field, and the second part dedicate to the consolidation of the financial statements and its assessment.

This Master’s thesis deals with the analysis of the effects influencing the difference between projected and actual costs of the works. To obtain prices of supply and demand itemized budgets were compiled on the basis of the project documents of this object and firm pricing. The actual price is based on the outputs of in-house accounting. The result is an effort to define and describe all possible factors that might have a negative effect on the project's economic outcome.

This work deals with the influence of atmospheric corrosion on high-cycle fatigue properties of a weathering steel ATMOFIX B. New experimental data on fatigue strength of a steel exposed for 20 years to an atmospheric corrosion were compared to those characterizing the base material. Reduction of the fatigue lifetime of the exposed material compared with the base material was predicted on the basic of fractographic examination of fracture surfaces and the influence of surface notches on fatigue strength. The predicted results agree well with the experimental results.