National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
Modifikace směsných oxidů Co-Mn-Al promotory a jejich vliv na vlastnosti a aktivitu při oxidaci VOC
Mikulová, Z. ; Jirátová, Květa ; Klempa, Jan ; Kovanda, F.
The influence of the catalysts chemical composition and of the mode of promoters incorporation on the activity and selectivity in VOC oxidation was studied. In total oxidation of toluene, the most active Co4MnAl catalysts were those containing low concentration of potassium regardless the mode of modification, while in ethanol total oxidation the catalyst impregnated with higher potassium concentration (3 wt%) was the most active. Introduction of Pt and Pd in amounts 0.5 or 0.1 wt% into the Co4MnAl catalyst did not improve its catalytic activity. The impregnation method appears to be more effective mode of catalyst modification than the method using an addition of promoters in the stage of coprecipitation of the LDH precursor.
Vyhledávání promotorů Corynebacterium glutamicum různě regulovaných v různých fázích růstu
Phensaijai, M. ; Knoppová, Monika ; Pátek, Miroslav ; Nešvera, Jan
Promoters of the amino acid-producing bacterium Corynebacterium glutamicum regulated differently in various phases of growth have been searched for. It was found that activity of promoter of the sigE gene coding for alternative sigma factor of RNA polymerase was strongly increased when the culture entered the stationary phase of growth
Modulace genové exprese mutagenezí v promotorech Corynebacterium glutamicum
Holátko, Jiří ; Elišáková, Veronika ; Prouza, Marek ; Phensaijai, M. ; Nešvera, Jan ; Pátek, Miroslav
Studies of structure and function of promoters in C. glutamicum were used in graded expression of genes involved in biosynthetic pathway of valine (ilvBNC, ilvD, ilvE) and in competing or branching-off pathways (ilvA, leuA). Combination of particular promoter mutants resulted in tuning the whole pathway to overall higher flux of the intermediates through the pathway and in high production of valine

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