National Repository of Grey Literature 25 records found  previous11 - 20next  jump to record: Search took 0.01 seconds. 
Kritická přesycení v malých objemech
Kožíšek, Zdeněk ; Demo, Pavel ; Sveshnikov, Alexey
Critical supersaturation is derived from the size distribution of nuclei as a function of volume of mother phase.
Vliv velikosti objemu na růstovou rychlost zárodků
Kožíšek, Zdeněk ; Demo, Pavel
Growth rate of supercritical clusters is determined from the size distribution function of nuclei.
Glass formation conditions in supercooled molten zinc chloride
Rodová, Miroslava ; Kožíšek, Zdeněk ; Nitsch, Karel
Solidification of ZnCl2 melt was studied experimentally by methods of thermal analysis and theoretically by construction of TTT curves.
Určení koncentrace vápennatých iontů v tuhnoucí cementové pastě s různým vodním součinitelem
Tichá, Petra ; Demo, Pavel ; Hošková, Š. ; Sveshnikov, Alexey ; Kožíšek, Zdeněk
Number density of calcium ions within cement paste was experimentally determined for various water to cement ratios and at different times.
Vliv velikosti objemu na nukleaci a růst
Kožíšek, Zdeněk ; Demo, Pavel
Volumic influence to the number of nuclei, nucleation rate and the growth rate is studied.
Nukleace pórů v pevných látkách: časová prodleva
Sveshnikov, Alexey ; Demo, Pavel ; Tichá, Petra ; Kožíšek, Zdeněk
We study early stage of formation of voids in solids. Within context of nucleation theory the time lag of this process is estimated.
Vliv počátečního přesycení na nukleaci a růst v uzavřených systémech
Kožíšek, Zdeněk ; Demo, Pavel ; Sveshnikov, Alexey ; Tichá, Petra
Influence of initial supersaturation on the size-distribution of nuclei and growth rate is studied in closed system. Numerical solution of kinetic equations show that depletion of the mother phase plays important role at higher initial supersaturations.
Crystallization study of Na-Gd phosphate glasses by non-isothermal DTA
Nitsch, Karel ; Kožíšek, Zdeněk ; Rodová, Miroslava
Crystallization kinetics of glass with nominal composition of Ce:NaGd(PO.sub.3./sub.).sub.4./sub. were studied using non-isothermal DTA in order to study its thermal stability.
Je vhodné použít standardní model nukleace v konečných systémech?
Kožíšek, Zdeněk ; Demo, Pavel
Initial size distribution of nuclei in finite systems plays important role in nucleation process. At low supersaturation our model gives the same results as standard model. At high supersaturation decreases of supersaturation in finite system plays important role and phase transition process differs from standard model.
Určení parametrů kvantových teček PbCl.sub.2./sub. v matrici NaCl pomoci optické spektroskopie
Sveshnikov, Alexey ; Demo, Pavel ; Polák, Karel ; Beitlerová, Alena ; Tichá, Petra ; Kožíšek, Zdeněk
Within context of nucleation theory and utilizing optical spectroscopy measurements at various temperatures the basic parameters entering nucleation equation (such as, for example, surface energy, resp. temperature dependent difference in chemical potentials) may be estimated.

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