National Repository of Grey Literature 27 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Purification of water soluble bioactive polysaccharides from biomass of heterotrophic mutant alga Chlorella vulgaris G11.
Sushytskyi, L. ; Lukáč, Pavol ; Bleha, R. ; Čopíková, J. ; Vannucci, Luca ; Sinica, A. ; Kaštánek, P.
Water extract obtained from biomass of mutant alga Chlorella vulgaris G11 was deproteinized and then purified with AEC on DEAE Sepharose FF and SEC on Sepaphadex G-75 superfine columns. Two high MW (>1000 kDa and 98,3 kDa) polysaccharides (CPS1 and CPS3) were eluted with water and 0.5M NaCl on DEAE column, and heteropolysaccharide with MW of 15 kDa (CPS2) was also eluted with water on DEAE. The former fractions were identified as branched rhamnans; the latter one as branched xylogalactofuranan of unusual structure. CPS1 shown properties of unstable polimer: according to GPC analysis and by using light scattering and RI detectors it was found, that some fraction of polymers (260-800 kDa) have self-assembling properties in aqueous solution, and MW of this fraction decreased during some time while polimer with initially bigger MW (>1000 kDa) became bigger. CPS3 was eluted with 0.3-0.5 M of NaCl on DEAE Sepharose FF column and have MW of 98,3 kDa. Cell toxicity of the products were tested in vitro on cell cultures for different concentrations
Measurement and analysis of the DAB system
Kaštánek, Petr ; Kufa, Jan (referee) ; Polák, Ladislav (advisor)
This thesis deals with the measurement and analysis the performance of the Digital Audio Broadcasting (DAB) system. Theoretical part of the work contains a brief description of the signal processing chain of DAB. Attention is devoted to physical layer (PHY). In the experimental part of the work is designed and implemented laboratory measuring workplace for reception, processing and evaluation of DAB signal. The RTL2832U software defined radio (SDR) is used as a receiver of the DAB signal. The functionality of the proposed concept is verified by a detailed measurement.
Usability of Extraction Techniques for Practical Applications.
Rousková, Milena ; Šabata, Stanislav ; Maléterová, Ywetta ; Hanika, Jiří ; Šolcová, Olga ; Stránská, M. ; Kaštánek, P. ; Bárnet, M. ; Svátek, A.
The aim of the study was the development of extraction procedures for the isolation of carotenoids, especially lutein, from medicinal plants (Calendula officinalis, Tagetes sp.), the obtaining of fragrances from Magnolia × pruhoniciana blooms, or the separation of waxes from Miscanthus sp. stalks.\n
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A Pilot-Plant Continuous Process for the Production of Biodiesel.
Hanika, Jiří ; Kaštánek, František ; Kaštánek, P. ; Maléterová, Ywetta ; Kronusová, O. ; Šolcová, Olga
On the basis of laboratory tests of the enzymatic Transesterification of different types of lipids and oils in a batch by using immobilized lipase arrangement, as in the continuous arrangement on the pilot apparatus, consisting of a cascade of two CSTRs with immobilized enzyme and two phases separators, functional samples have been prepared and tested in a pilot scale for application as additive to biodiesel.
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Transport Biofuels and Their Perspectives.
Kaštánek, František ; Maléterová, Ywetta ; Hanika, Jiří ; Kaštánek, P. ; Šolcová, Olga
There are discussed already applied procedures or procedures verified in pilot scale and only in laboratory scale. Essentially, transport biofuel technologies can be considered: Hydrolysis and fermentation of lignocelluloses to lower alcohols, transesterification of oils, production of liquid biomass pyrolysis product, so called bio-oil as the main product in addition to bio-coal and pyrolysis gases, gasification to produce synthesis gas followed by catalytic production of gasoline and naphtha hydrocarbons\n(Fischer-Tropsch synthesis), transformation of a system of chemical compounds obtained from bio-oil into hydrocarbons by catalytic hydro deoxygenation and /or hydrocarbons obtained directly from the biomass by catalytic hydro deoxygenation.
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National Repository of Grey Literature : 27 records found   1 - 10nextend  jump to record:
See also: similar author names
1 Kaštánek, P.
2 Kaštánek, Petr
2 Kaštánek, petr
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