Crystallization behavior and IR structure of yttrium aluminosilicate glasses

The crystallization of four Y2O3-Al2O3-SiO2 (YAS) glasses were investigated to prepare YAS glass ceramics precipitated singly/mainly Y2Si2O7 or Y4.67(SiO4)3O apatite, and to explore the crystallization difference between the stoichiometric parent glass (SPG) and non-stoichiometric parent glass (NSPG). The DSC results revealed that glass locating at the higher liquidus surface temperature has lower crystallization peak temperature, which indicating that the corresponding glass has higher crystallization potential to crystallize easily. Crystallization of the NSPG samples is along surface and caused by phase separation, while SPG sample is the surface crystallization at the first exothermic peak temperature and overall crystallization at the second exothermic peak temperature. Glass ceramics only containing y-Y2Si2O7 or Y4.67(SiO4)3O apatite are obtained successfully, and which are illustrated by fitting FTIR spectra. These results can provide technical guide for controlling the crystallization process and the types of precipitated crystals in YAS glass for different application potentials

Návrh riešenia mezonetových bytov

The final thesis aims to create an interior of a maisonette apartment, which is located in the former steam power station, later calibration facility. The building is located in the center of Žilina and is currently used only as a gallery. The thesis is divided into two main parts, theoretical and practical. The theoretical part deals with standards, history, design, psychology and colors. The practical part focuses on the building itself, its history and the current design. It also focuses on the design of the coffee table, its structure and materials. There are drawings included in the second part, that contains design process itself. The final draft is supported by 2D drawings and 3D visualizations

Světelný objekt

The aim of this thesis is to create a light object. We can imagine basically anything under the term light object, but we are mainly focused on the clock. The clock consists of 12 wooden blocks in which LED strips with 60 LEDs are built. Each wooden block with a strip represents one hour and every LED alone represents one minute. The thesis is divided into two parts, theoretical and practical. The task of the theoretical part is to analyze all theoretical knowledge. It contains the main chapters which include standards, history, psychology, light perception, particular luminaires, their origin, sources, design, usage, LED, clock, time and ergonomics and their subchapters. The following practical part deals with a specific product, its inspiration, designs and research, shape and material, construction, price range and last but no least the final design and its visualizations. The practical part also consists of attachments that contain drawings and visualizations created in 2D and 3D programs