National Repository of Grey Literature 6 records found  Search took 0.01 seconds. 
Vliv změny struktury semen rostlin na rychlost jejich extrakce superkritickým CO2
Rochová, K. ; Sovová, Helena ; Sobolík, Václav ; Allaf, K.
The beans were either cut into half or milled to particles. The extraction curves were measured and compared with mathematical model for oil extraction from plants. Textural properties of tested materials were measured using mercury porosimetry and helium pycnometry. The pore size distribution in 0.01-100 um range was bimodal; the increase in the volume of pores after DIC treatment was tenfold for 0.1 µm pores and thirty-fold for 10 um pores.
Extrakce éterického oleje pomocí procesu okamžitého odpaření: aplikace na indonézské květy Ylang-Ylang
Kristiawan, M. ; Sobolík, Václav ; Allaf, K.
The extraction of Indonesian ylang-ylang oil was carried out by new process: Instantaneous Controlled Pressure Drop (DIC). This process involves subjecting the dried ylang-ylang (Cananga odorata Hook. fil. et Thomson, forma macrophylla) flowers for a short period time to a saturated steam pressure, followed by an abrupt pressure drop into vacuum (about 50 mbar).
Mapování Couettova-Taylorova proudění pomocí elektrodifuzní
Wouahbi, F. ; Havlica, Jaromír ; Allaf, K. ; Sobolík, Václav
Three Taylor instabilities between coaxial cylinders are studied: Taylor Vortex Flow, Wavy Vortex Flow and Modulated Wavy Flow. The aim of the present in vestigation is to extended our knowledge about spatial distribution of wall shear rate components and their fluctuation freguencies in these flow regime. The vortex height, azimuthal wave number and their amplitude and modulation frequency is also investigated.

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