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Effective speech therapy counseling in the treatment of developmental dysphasia and its use across disciplines
Veverková, Eva ; Klenková, Jiřina (advisor) ; Komorná, Marie (referee)
The master thesis deals with alternative and augmentative communication for adults with combined disabilities. It defines the theoretical foundations of disability, more specifically combined disability. It also describes the communication of people with combined disabilities and explains concepts such as communication, impaired communication skills or speech therapy intervention for people with combined disabilities. Its disadvantages relate more to alternative and augmentative communication, in which it describes in more detail the methods and systems, diagnostic aspects, training of use or its advantages and benefits. The main purpose of this work is to describe the use of alternative and augmentative communication in the everyday life of adults with combined disabilities, especially in everyday activities and also in the possibility of expressing their needs and feelings. The research survey took place in two phases, in the first phase case studies of adults with combined disabilities were prepared and in the second phase participatory observation and direct work with individual persons was carried out. At the end of the work, the benefits of alternative and augmentative communication in adults with combined disabilities are characterized.
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Effect of aluminum content and precipitation on the corrosion behavior and acoustic emission response of AZ31 and AZ80 magnesium alloys
Veverková, E. ; Knapek, Michal ; Minárik, P.
In this study, we investigated the effect of aluminum content and precipitation on the corrosion behavior of the AZ31 and AZ80 magnesium alloys. The investigated alloys were received in the as-extruded condition in order to retain comparable grain size and texture. First, solid solution treatment was performed on the samples of both alloys. Subsequently, the samples were isothermally aged at 200 degrees C for 20 hours. The scanning electron microscopy was used to study the grain size and microstructure. The corrosion properties of samples were studied by potentiodynamic polarization measurements and the AE signal was concurrently recorded. Solution treated AZ80 and AZ31 samples exhibited similar behavior. The aged AZ80 sample showed lower corrosion rate. Also, a strong breakdown appeared in the later (compared to other samples) stage of the potentiodynamic test. The breakdown was found to be easily recognized by AE parameters.
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Oxidation properties of complex concentrated alloys
Veverková, Eliška ; Minárik, Peter (advisor) ; Král, Robert (referee)
The thesis is focused on the oxidation characteristics of two complex con- centrated alloys - FeAlCrMo and FeAlCrV. Potentiodynamic polarisation tests were performed in order to characterize corrosion behavior of the alloys in two different corrosion media (aqueous solution of 3,5% NaCl and 0,5M H2SO4), in addition, high-temperature oxidation resistance was studied. All tests were perfor- med also for stainless steel used as a benchmark. An excellent corrosion resistance of both alloys was discovered, especially in the acidic solution, the studied alloys even surpassed reference stainless steel. On the contrary, poor resistance to high- temperature oxidation was observed. Particularly FeAlCrV exhibited catastrophic properties and resistance of FeAlCrMo is also inferior to stainless steel.
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