|
|
Study of microstructure and real structure of nanoparticles prepared by gas aggregation cluster source
Košutová, Tereza ; Dopita, Milan (advisor) ; Rohlíček, Jan (referee) ; Zákutná, Dominika (referee)
The scope of this work is the characterization of nanoparticles prepared by aggregation from the gas phase. The main focus is on their microstructure and real structure investigated by x-ray scattering methods, although combined with complementary methods such as electron microscopies and optical measurement. The microstructural characteristics, i.e. nanoparticle morphology and crystal and inner structure, were found to be tightly connected with the deposition parameters. For chosen systems, we also analysed the nanoparticle thermal or temporal stability and evolution. Multiple gas aggregation deposition systems were used for the preparation of nanoparticles consisting of different materials. In detail, we studied single-metal nanoparticles - gold, silver and copper. For these, the behaviour with increasing temperature changes with the type of material and also its amount on the substrate. However, in general, the annealing of nanoparticles reduces the amount of structural defects in the crystal structure and causes the coalescence of nanoparticles. In the case of the copper nanoparticles, the coalescence is limited due to the nanoparticle oxidation in the air atmosphere. Similarly, in another system composed of niobium nanoparticles, we observed and described the gradual oxidation during annealing. On the...
|
|
|
The Integration of the Wheelchair Bound into Society.
Rohlíček, Jan ; Krahulcová, Beáta (advisor) ; Zelinková, Olga (referee)
My work deals with the integration of wheelchair disabled persons into the society and it is focused on current situation in Czech Republic. In the first part of my work, consisting of four chapters handicap is defined (from the historical, cultural and psycho-social point of view). I particularly deal with main approaches of major society to handicapped people during the evolution of the human society to understand it nowadays. The second part, also consisting of four chapters I pay attention on some basic efforts and activities of this integrative process - for example educational system, social care a social services, employment support, transport possibilities, health care delivery and leisure time activities.
|
|
|
CrystalCMP: examples of use
Rohlíček, Jan
The program CrystalCMP can be used for comparison of crystal structures containing separated molecular objects as it is, for instance, in molecular crystals or some metal-organic compounds. The program can be useful in many different situations. This article shows the use of the program CrystalCMP on three basic exam ples for which the program was primarily intended.
|
|
|
The Integration of the Wheelchair Bound into Society.
Rohlíček, Jan ; Krahulcová, Beáta (advisor) ; Zelinková, Olga (referee)
My work deals with the integration of wheelchair disabled persons into the society and it is focused on current situation in Czech Republic. In the first part of my work, consisting of four chapters handicap is defined (from the historical, cultural and psycho-social point of view). I particularly deal with main approaches of major society to handicapped people during the evolution of the human society to understand it nowadays. The second part, also consisting of four chapters I pay attention on some basic efforts and activities of this integrative process - for example educational system, social care a social services, employment support, transport possibilities, health care delivery and leisure time activities.
|
|
|
The development of unemployment in Most region
Rohlíček, Jan ; Severová, Lucie (advisor) ; Spiesová, Daniela (referee)
This paper analyzes situation in Most in terms of unemployment. In the first part, it describes ethnical strukture of population as well as it gives an overlook of whole city of Most. It describes two biggest employers of the region from the view of influencing the unemployment rate. Practical part tries to define the causes of unemployment through the opinion of its own inhabitants. As well it tries to give some possible solutions to solve this bad situation.
|
guest ::
