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Comparison of alternative forms of cohabitation in the Czech Republic and France
Houdková, Sylvie ; Lederer, Vít (advisor) ; Frinta, Ondřej (referee)
Comparison of alternative forms of cohabitation in the Czech Republic and France Abstract The main objective of this thesis is to provide a detailed and systematic view of different types of alternative forms of cohabitation in two different countries, in the Czech Republic and in France, using descriptive, analytical and comparative methods. This thesis is divided into six parts. First three parts are focused on French legislation. The first part introduces the French legal order and its liberal approach to homosexuality in general and to various forms of cohabitation. The second part describes in detail the Civil Solidarity Pact, registered partnership of its kind, its development over the years, as well as main reasons of its rising popularity in French society. It also provides a brief comparison with the institution of marriage in order to fully understand the advantages and disadvantages of the Civil Solidarity Pact. The third part of this thesis is concerned with concubinage, a very informal alternative form of cohabitation, also embodied in French legal order. The following fourth and fifth parts describe the conservative approach of the Czech Republic to various forms of cohabitation over the years and their main advantages and disadvantages in comparison with France. It points to the division of...
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Influence of ball material on the resulting fatigue life of thermal sprayed HVOF coatings in dynamic impact testing
Duliškovič, J. ; Daniel, Josef ; Houdková, Š.
Dynamic impact wear, i.e. contact between two components in the presence of high cyclic local loads, is a challenging failure mode that occurs in many mechanical applications. Many previous studies have confirmed that dynamic impact testing is suitable for evaluating the contact fatigue of thermal sprayed coatings. However, the effect of the test parameters on the resulting lifetime is unclear. The aim of this study describes the effect of the ball material used in the dynamic impact test on the resulting fatigue life of the HVOF thermal sprayed coating. Three test balls made of WC/Co alloy, Si3N4 silicon nitride and 440 C steel were chosen for this study. Dynamic impaction testing was carried out on the Cr3C2-NiCr coating, which was sprayed by HVOF on a 1.2376 high-speed steel substrate. The impact lifetime was described by the number of critical impacts, i.e. the number of impacts before coating fatigue occurs. Furthermore, the depth and volume of impact craters were measured. Using scanning electron microscopy (SEM), the surface of the impacts as well as the microstructure of the coating on the cross-section in the region of the impacts were observed. Furthermore, the mechanism of crack propagation in the coating and the microstructure of the indentor were investigated.
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High temperature corrosion studies of HVOF sprayed coatings in molten sulphate salts environment
Lencová, K. ; Česánek, Z. ; Houdková, Š. ; Lukáč, František ; Mušálek, Radek
The generally applied requirements on lowering of emission production in the field of power industry have led, among others, into the application of low-emission combustion process of coal fired power plants. Besides the emissions reduction, this process has led to an increase of boilers parts corrosion degradation due to the reducing atmosphere in low-emission boilers, responsible for sulphide corrosion and molten salt attack. In such environment, the protection of the exposed surfaces gains importance. Among others, the thermal spraying technology can offer a suitable way of surface corrosion protection. In the present work, the high temperature corrosion behaviour of CoCrAlYTaCSi and Cr3C2-25%NiCr High Pressure/High Velocity Oxygen Fuel (HP/HVOF) sprayed coatings is evaluated and compared to the behaviour of bare structural steel (SPT360) substrate. The specimens were exposed to a molten salt environment, i. e., 12% Na2SO4 + 82% Fe2(SO4)3 at 690 °C under cyclic condition, simulating the working environment in low-emission boilers of coal-fired power plants. The thermogravimetric method was used to establish the kinetics of corrosion. X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS) techniques were used to analyse the corrosion products and determine the corrosion mechanism. The thermogravimetric measurement shows high oxidation rate of SPT360 steel. Cr3C2-25%NiCr coating provides slightly better performance compared to CoCrAlYTaCSi coating. Based on the obtained results, both coatings were found to have higher corrosion resistance than the SPT360 steel substrate, offering a sufficient surface protection in a given environment.
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Characterization of flame sprayed abradable seal NiCrAl-bentonite coatings
Houdková, Š. ; Česánek, Z. ; Schubert, J. ; Lukáč, František ; Bystrianský, M.
The NiCrAl-21% Bentonite abradable coating, deposited by flame spraying, was exposed to 720°C / 1 hour air-annealing to evaluate its resistance against heat-induced changes. The SEM and XRD microstructure evaluation was done. After the air-annealing, the increase of HR15Y surface hardness was recorded and accompanied with decrease of abradability evaluated by Progressive Readability Hardness (PAH) test, although no demonstrable microstructural changes was recorded by SEM. XRD analyses evidenced the formation of nickel oxides and ordered Ni3Al phase during the air-annealing. Besides the abradable coating evaluation, this work brings the verification of the potential of PAH for scratch hardness testing. The measurement provides the results with low scatter, compared to usual surface hardness testing, and enables to distinguish between the depth of indentation in loaded and unloaded state, pointing out to the elastic/plastic deformation ratio.
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Feelings of Users Low-Threshold Facilities for Children and Youth in the Phase First Contact.
HOUDKOVÁ, Soňa
When initiating the first contact, the biggest factor on the applicant is the impression of the one who is under review, so is the side of the applicant as the reviewer. When in the pursuit of trying to understand them, these factors fall into a process of making the first impression, on the other side we also invent intuitive theory, which could influence the way that applicants get their information. These theories also influence the behaviour from which you can influence the quality of relation between the employee and the applicant. The first contact is about social knowing and perceiving, which means processing the gained information. That?s why each service should have clear given schedule in how to process the initial contact regarding obtaining information, so we don?t overwhelm the applicant straight away. In my bachelor?s degree essay I try to question the process of the initiative contact applicants make. In the beginning of the practical part it is necessary to describe assigned aim of the work and mentioned researched question. The aim is to find out, how the process of the initial contact influences the applicants. I choose better strategy in my research to find out the given assigned question and to accomplish the point and technique of half structured dialogues completed in nonparticipation observations. The main aim group was represented by children in the initiative contact, regardless on the number of visits. To be specific, there were nine children. The age group from twelve to thirteen years of age was based on long term observation from the initial study. The study was made throughout February ? march 2013. We can deduct from the results of the study that the applicants interested in this service experience the initial contact in very different ways. The next visits in the scope of the initial contact is experienced by all applicants with calm and positive emotions a that?s mainly thanks to the approach and used methods of the social workers. The basic method, which is used by the workers, is mainly a human contact. All questioned agreed that natural, friendly and helpful attitude of the workers works well. This attitude is mainly connected with informal friendliness of the workers and by joining together in free time activities. The research simultaneously shows that high influence on using the initial contact and entry to the facility. Firstly the outer one isn?t very pleasant for the clients, to which I dedicate thewhole observation chapter in the theory part. The reasons given for the aimed group who enters for the first time, is caused mainly by it being dingyand dark. On the contrary, they like atmosphere of the clubs, which are well lit and decorated. In the end to summarize the accomplishments I would like to mention the fact (on which most informants agreed on) that the ideal case would be, if they could come to a new environment and facility accompanied by their nearby, e.g. a friend or colleague. I assume from all the obtained information, that each low-threshold facility for children and youth should have set schedule and plan for the initial contact to improve the quality of the social facilities. This schedule should show what the applicants will be told in the upcoming meeting. This method should be used, not only by the workers but also by the interns and volunteers. It would also be suitable to remove all the barriers, which are causing negative feelings and emotions when entering the facility. It would be assumed that this essay could serve as a resource for information not only for public use but also for specialist in social services field who work with children and youth. As the first initial contact is made in each social service and it is necessary to acclimatize theapproach of the social workers, so all the applicants would feel welcome and wanted in the given facility.
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