Karel Jeřábek

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Two hypercross-linked resins stemming from a gel-type poly-chloromethylated styrene-divinylbenzene resin (GT) in beaded form are investigated with a combination of spectroscopic techniques (EPR and time-domain (TD)-NMR spectroscopy) to evaluate their use as supports for the development of operationally flexible heterogeneous metal catalysts, suitable to be(More)
KLJUČNE RIJEČI koljenasta osovina matematički model geometrijski model ekonomske prednosti Karel Jeřábek Institute of Technology and Business České Budějovice, Czech Republic e-mail: jerabek@mail.vstecb.cz Terezie Vondráčková Institute of Technology and Business České Budějovice, Czech Republic e-mail: 13260@mail.vstecb.cz Věra Voštová Czech Technical(More)
KLJUČNE RIJEČI sustav jaružanja ekstrakcija sirovi materijali morski minerali nekonvencionalni izvori Karel Jeřábek Institute of Technology and Business in České Budějovice, Department of Transport and Logistics, Czech Republic e-mail: jerabek@mail.vstecb.cz Ondrej Stopka Institute of Technology and Business in České Budějovice, Department of Transport and(More)
Hyper-cross-linked resins stemming from a gel-type poly-chloromethylated poly(styrene-co-divinylbenzene) resin (GT) have been investigated by a multi-methodological approach based on elemental analysis, scanning electron microscopy, X-ray microanalysis, and solvent absorption. The hyper-cross-linking of the parent resin was accomplished by Friedel-Crafts(More)
The cross-linked polyurea support EnCat 30, its related macromolecular complex Pd(II)/EnCat 30 and its related Pd(0)/EnCat 30NP nanocomposite are thoroughly investigated with SEM, TEM, ISEC and ESR in the solid state (SEM and TEM) and swollen state in THF (ISEC and ESR). Pd(II)/EnCat 30 and its related Pd(0)/EnCat 30NP are obtained by microencapsulation of(More)
The polymer framework of water-swollen copolymers of N,N-dimethylacrylamide, acrylamido-2-methylpropanesulfonic acid, and ethylenedimethacrylate (nominal cross-linking degrees of 4, 8, and 20 mol %) is composed of highly expanded domains, with "pores" not less than 6 nm in diameter. When the 4% cross-linked copolymer (DAE 26-4) is swollen with a 10(-4) M(More)
Most hydrogen peroxide is currently produced by the selective hydrogenation of 2-ethylanthraquinone (EAQ) to 2-ethylanthrahydroquinone (EAHQ), followed by treatment with dioxygen; this produces hydrogen peroxide and regenerates 2-ethylanthraquinone. We have developed novel catalysts for this process that are based on palladium supported on very lipophilic(More)
This article is focused on the helicopter approach to landing on offshore objects. It describes helicopter approaches and specially designed approaches for the sea. The evaluation of safety in aviation is shown with applications to SOAP approach as well. The helicopter approach to the landing can be considered as part of aviation, which has long been(More)
KLJUČNE RIJEČI clark-wright metoda logistika raspodjele opskrba usmjeravanje vozila Karel Jeřábek Department of Transport and Logistics Institute of Technology and Business in České Budějovice, Czech Republic e-mail: jerabek@mail.vstecb.cz Peter Majercak Department of Economics Faculty of Operation and Economics of Transport and Communications University of(More)