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This thesis deals with the impact of stress factors on performance and employee satisfaction. The thesis research has been conducted in five small industrial companies in Velké Meziříčí. On the basis of the research results were identified main stress factors in the work environment and their impact on employee performance and satisfaction. Subsequently, according to the obtained results were proposed recommendations to eliminate the stress factors in the workplace and these recommendations have been economically evaluated. The investigation showed that there is an effect of stress factors on employee performance and satisfaction. Within physiological stressors most workers face noise. In the case of social stressors the most stressful employee concerns are connected with the loss of the job. At stressors associated with the characteristics of the performed work it is the time pressure and the associated psychological pressure and subsequently the inability to participate in making decisions.

Iron is an essential element for living organisms. However, as it is a transition metal, it can participate in Fenton reaction resulting in generation of free radicals and oxidative damage to tissues. Antioxidants may prevent possible iron toxicity by chelating free iron or scavenging free radicals. Falvonoids are naturally occurring substances that are capable of formation of complexes with metals, including iron. T h e y have been show to possess antioxidant activity, which depends on molecular complexity of numerous types of flavonoids, e.g. quercetin and silibinin. Bisphosphonates are synthetic drugs used to treat various metabolic diseases of bones. Their principál effect is an inhibition of osteclast activity leading to a decreased bone resorption. Bisphosphonates have been however shown to exert some antioxidant activity in in vitro experiments, too. The aim of this PhD thesis was to investigate the role of iron in toxicity of other metals (cadmium) and the effect of flavonoids (quercetin and silibinin) and bisphosphonates (clodronate, etidronate and risedronate) on iron-induced oxidative damage in vivo. Experiments were performed in male mice (CD-1, Charles River, 25-35 body weight). Iron was administered intraperitoneally or in the diet. Cadmium was administered subcutaneously. Flavonoids and...

Technological progress have gradually affected all aspects of human life, and it hit also the forestry sector. Newly introduced methods and technologies have brought a reduction of onerous, increasing productivity and entirely new risks arising from the operation of innovative forestry techniques. This work deals with just one of a number of risks arising from work in the forest and it's subject is a noise that is inherent in the use of technology. Short and also a long term noise exposure negative effects the human body and it can cause irreversible damage or even death. This work is focused on the effect of exposure to noise in the cabin of a harvester with emphasis on the physiology and human psychology with regard to occupational safety and health. The thesis also analyzes the stress in the workplace, stress, emerging and potential physiological and mental reactions to it. The work results during physiological functions of the persons who attended the measuring apparatus using Biofeedback 2000 x-pert for exposure to two different acoustic stimuli. In this work, inter alia the results of a test of attention and self probands obtained by subjective scales, which refine the findings of their current state of mind before and after exposure to the selected sounds.

In my master thesis, I am trying to name the origins and signals of an actor`s fear. I have came from my own existing stage experiences previously and whilst studying classical acting at the Dramatic Faculty of the Academy of Performing Arts in Prague, and also from my first experiences with differing professional groups from theatres from around the Czech Republic. My thesis is supported by professional literature, with which one I have read during my studies at the Academy, and it is inspired by talks and by consultation with people who are active in an artistic field. In my work I reflect my mental prosesses, states and blocks, not only during stage creations, but also in my personal life. I think that a fear can rule an actor and cause stage fright. This is why I have decided to choose this subject for my thesis.

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