This master's thesis deals with abrasive water jet cutting in the introduction. Another part is focused on deploying technology 3D cutting with abrasive water jet in conditions of a medium-sized company. This technology allows the elimination of bevels, and angel cutting. The following sections deal with technological capabilities of the specific machine and experimental comparison of samples cut by AWJ and DWJ technology. The work also includes a sample layout of machines on existing premises, the proposal for a potential component base and economic evaluation.

Acrylamide (AA) is a probable human carcinogen and undesirable contaminant which is produced by the reaction of reducing sugars with asparagine in plant foods during their thermal treatment above 120 °C. AA is most often determined by GC-MS and LC-MS/MS in isolates from the matrix in a wide range of foods. According to our observations, AA intake from food is higher among young people (from 1.8 to 3.8 µg/kg bw/day), which is consistent with the estimations of JECFA FAO/WHO from the year 2006. Considering the health risk, it is recommended to reduce AA formation in food during its processing, in particular exploiting the available experience. The aim of this thesis was to extend the knowledge of the possibility of AA elimination in selected types of thermally processed foods. The study was focused on cereal foods that contribute significantly to AA exposure, especially bread and sweet biscuits. The whole AA content in the bread is in the crust, which represents 5-15% of the bread. Crust of home-made bread contains approximately 30-75 µg/kg, however the marketed bread contains 2 to 10 times more of AA. This is due to the composition of bread mix, preparation conditions and baking. For maintaining the quality of home-made bread during the dry mixture shelf-life, optimization of bread mixtures was designed by increasing of yeast content, which proved positive effect on the reduction of AA content at sufficiently high activity of the yeast. Monitoring of AA content in assortment of sweet bakery products showed higher levels of AA in diabetic biscuits containing fructose instead of sucrose. Three of them even exceeded the reference value (500 µg/kg) more than 1.5 times for commodity "cookies". Elimination of AA by applications of the enzyme asparaginase has been designed for minimal interference in technology of their production. The concentration of the enzyme and the appropriate method of its use in industrial environment have been tested previously in model systems. In optimized conditions of the enzyme application, AA content in diabetic biscuits was reduced by more than 40% without affecting the organoleptic properties of the final product. Effect of the antioxidants on AA formation was also part of the study. AA content in gingerbread was reduced efficiently by the use of fennel, anise, cloves, vanilla and white pepper (by about 9-21%). Conversely, coriander and cinnamon significantly increased its content (by 18-54%). Since correlations between the DPPH• radical quenching activity of the spice extracts and AA content was not observed, the final content of AA was probably influenced by the chemical composition of spices and reactivity of the individual components in the matrix. Investigated methods appear to be suitable ways of elimination AA in some foods; however their specific use must be optimized with regard to the composition of the food, processing and the technology used. Estimated impact of application of the above-mentioned methods to the overall elimination of AA exposure showed that its intake in high school students from the Czech and Slovak Republic can be reduced on average by 10%. This decrease is a success to reduce the possible risk of cancer disease by eating foods with a high AA content. It is also important piece of information for food producers for further development of relevant methods for AA elimination which would help to reduce the AA intake from foods even more.

This master’s thesis deals with assessment of Information System in company working in the textile industry and services, and proposal for ICT modification, which lead to improvement of the current situation and risk elimination. The theoretical part deals with the basic concepts related to information systems and the practical part describes the company, its information system, the actual analysis of the system, eliminating the risks and suggestions for improvement.

This master's thesis deals with assessment of information system in the company Spielberg s. r. o. Theoretical part includes issue of information system and explanation of each method which is used in a following analysis. Shortcomings which are found thanks to the analysis are elaborated and the changes of information system and eliminations of the risks are proposed. This part of this thesis shloud lead to the improvement of the current situation.

Dissertation thesis falls within area of indoor climate and deals with investigation of acoustic microclimate in sanitary rooms of residential buildings during a mechanical ventilation. Sources of a noise in these areas are small fans. The thesis contains the evaluation of the existing situation concerning the referred issue, physical laws of acoustics and theoretical basics of acoustics of air conditioning. The part of the thesis is experimental measurement which aims to evaluate the situation in real applications and the possibility of influencing the acoustic microclimate by affixing of small fans on the building structure. The work contains a model for the verification of certain anticipated dependencies and theoretical investigation of the distribution of sound pressure levels in the sanitary room, depending on the location of the noise source. The last part of the work offers possible measures to improve the acoustic microclimate and elimination of the noise in sanitary rooms and in protected areas of residential buildings.

Theoretical background Employment in the health service brings about a number of risks that are specific of respective health facilities and their departments. Nurses should be informed about all possible risks resulting from their nursing practice, as well as about ways to eliminate these risks because this is the only way they can protect themselves and by suitable means and procedures. Performing their work, nurses are exposed to four main areas of risk factors. These concern especially the effects of mental and physical strain, chemicals and biological factors. Objective of my thesis The objective was to test nurses' knowledge of risks and to test how well they can eliminate these risks. Apart from that, the thesis endeavours to find out whether the risks in nurses' work change in relation to the field of care provided. Hypotheses H1 Nurses know the risks resulting from their nursing practice. H2 Risks in nurses' work vary in relation to the field of care. H3 The most common risk occurring in nurses' occupation is the puncture wound caused by a needle. H 4 Nurses are acquainted with manners to eliminate risks resulting from the performance of their occupation. Methodology To test nurses' knowledge, I compiled a questionnaire focused on surveying the knowledge in the field of risks and elimination of these risks. The questionnaire was arranged in two basic groups. The first group was focused on the knowledge of risks and occurring injury in the performance of the occupation (the puncture wound by a needle). The other group was focused on the area of eliminating the risks. The research was carried out in medical facilities in the Region of South Bohemia. Altogether, 417 nurses were addressed. The following sections were chosen in a haphazard fashion: pulmonary, surgical, internal and a neurological departments, department of subsequent care and the intensive care unit. All the results obtained were statistically processed in the Excel programme from the Microsoft Office software packet. I used a graphic depiction to interpret the outcomes. Outcomes It was found out in the first area of the outcomes that nurses are acquainted with the risks of their occupation (knowledge of risk behaviour, when handling loads, when working with chemicals, when handling oxygen cylinders, treating an aggressive client). The second area of the outcomes was essential for establishing the ways to eliminate risks (the nurses proved knowledge of risks and duties, the duty to participate in creating a safe environment , compulsory preventive medical examinations, knowledge of risk behaviour, using personal protective equipment, observing the work principles and procedures, knowledge of treating contaminated laundry, oxygen cylinders and immobile clients, disinfection of hands, treating an aggressive client). The third area yielded an answer to the question whether puncture wounds caused by needles ranked among the most frequent risks in the occupation of the nurse. The last area was essential to establish the variability of risks depending on the field of care provided. It was found out, that risks varied in relation to the field of care provided, while the nurses viewed the mental and physical strain as the most significant risk in the performance of their work. H1 - Nurses know the risks resulting from their nursing practice - was confirmed, H2 - Risks in nurses' work vary in relation to the field of care provided - was confirmed, H3 - The most common risk occurring in nurses' occupation is the puncture wound by a needle - was confirmed, H4 - Nurses know ways to eliminate risks resulting from the performance of their occupation - was confirmed. Conclusion The outcomes of the research realized will be given to the managements of the above medical facilities, with the aim of increasing the nurses' knowledge of possible risks occurring in the performance of their work, as well as possible ways of eliminating these risks.

This student thesis deals with problems of the causes of road accidents and injury in the Czech Republic, and with the possibilities of their elimination. The human is the most dangerous factor of the transportation system. This resulted in the analysis of the causes of road accidents. The safety of the human factor depends on the experience of the driver, appreciating of danger, attention paid to the driving of vehicle, and on the stress of the road-traffic. The basis of the effective accident prevention are traffic safety precautions.

The aim of this work is to identify the most common communication errors in terms of transactional analysis taken from selected levels of management of medical facility, which undermine the social interaction at work, and analyse their causes and impact on the behaviour and experience of parties involved. Part of the work is a set of recommendations for the prevention and elimination of these barriers. For these goals to be met, I have developed questionnaires, particularly for top management, and especially for middle management, where the respondents assess themselves on how often they face barriers in the workplace and the impact of these barriers on their behaviour and experience. Their responses are processed in charts by allocation criteria. Communication theories and the barriers related to the identified data give an idea of how the top management of this medical facility (and possibly at other medical facilities of similar size and structure) should communicate with senior consultants with care. The contribution of this work should be to improve communication and achieve not only greater satisfaction for all employees, but also increase productivity during business hours. For this to transpire, it is first necessary to increase communication, especially the knowledge of effective communication, then accept their mistakes and make a constant effort to eliminate them. Some important basic concepts in communication, transactional, barriers of communication and removing communication barriers are clarified in the theoretical part. The practical part is focused on the environment of unnamed hospital. The most commonly met crossed transactions in the workplace and their impact on the behaviour and experience are shown and described there.

The subject of this thesis is risk management in construction companies. The theoretical part describes the origin and definition of risk, risk classification, sources and methods of risk management and risk reduction. The practical part is focused on a particular contract, in the particular construction company. This project presents a practical approach and risk management solutions with suggestions for preventive measures to eliminate risk factors.

The final master’s thesis analyzes the individual elements of Security control workplace and solves their optimization with respect to the rulemaking side of things, and integration into the existing space layout with a vision of the increasing demand for transport. Solves the issue of electromagnetic interference elimination in the detection equipment and suggests possible solutions to overcome them. The work is primarily related to the Prague - Ruzyne airport.