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Energy Consumption Reduction of Panel Buildings
Pozděnová, Barbora ; Vojtěch, Dušan (referee) ; Hanák, Tomáš (advisor)
The aim of the Thesis is to describe the current trends in reducing energy use of blocks of flats and to analyse the costs and profits of these projects using a certain example.The theoretical part describes the history of construction, the characteristic of the panel houses including some common faults, and the provided grants for their reconstruction. The practical part deals with the assessment of three existing panel houses, which were insulated in different time periods, with various strategies and under different financial conditions.
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Selective Leaching as a Method of Metallic Nanoparticles Preparation
Michalcová, A. ; Vojtěch, D. ; Kubatík, Tomáš František ; Marek, I. ; Svobodová, P. ; Novák, P.
Selective leaching is process used mainly in analytical praxis–alloy matrix is dissolved and the residuum can be study by different methods. In this article, modification of selective leaching determined for production of metallic nanoparticles is described.Selective leaching technique lays in preparation of supersaturated solid solution of desired element in matrix metal –by convenient heat treatment or by rapid solidification of the binary alloy. Consequently, the matrix metal is selectively dissolved and metal nanoparticles from other metal are formed. The size, shape and agglomeration of forming metallic nanoparticles are dependent on many factors such as reaction temperature, concentration of leaching solution, additives present in leaching solution. The metal mainly used as matrix component is aluminium due to is amphoteric behaviour. It enables aluminium dissolution in sodium hydroxide without affecting the minor metal. Nobel metals like silver or copper forms
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