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National Repository of Grey Literature 12 records found  previous11 - 12  jump to record: Search took 0.01 seconds. 
Minimální KC prostory
 Opršal, Jakub ; Hušek, Miroslav (referee) ; Simon, Petr (advisor)
Spaces, in which each compact subset is closed are called, KC spaces (we do not require any separation axioms). Obviously every Hausdorff space is KC and every KC space is T1. This thesis answers the question, whetever every KC space, which has no strictly weaker KC topology, is necessary compact. In the year 2002 T. Vidalis proved that every such space is countably compact, however his proof contains an error. The same problem was affirmatively solved in 2007 by A. Bella and C. Constantini.
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A study of silver nanoparticle behavior in liquid media for ecotoxicity tests
 Opršal, J. ; Pouzar, M. ; Knotek, P. ; Šlouf, Miroslav ; Pavlova, Ewa
The up to date increasing number of nanotechnology applications is linked with a serious danger of environmental pollution by nanomaterials. Consequently, the ecotoxicity testing of nanomaterials becomes an essential part of nanotechnology development. Classical ecotoxicity tests suffer with a number of complications when used for nanomaterials. In the case of aquatic toxicity tests, the nanoparticle agglomeration in the liquid media is a fundamental problem. The aim of this work is to evaluate the influence of important physico-chemical parameters (nanoparticle concentration and illumination conditions) on an agglomeration of 40 nm silver nanoparticles (AgNPs) in a liquid media prescribed for fish eco-toxicity test by the OECD 203 guideline (Medium 203).
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National Repository of Grey Literature : 12 records found   previous11 - 12  jump to record:
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9 Opršal, Jakub
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