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Priorities of Funding in Various Areas of Social Policy - November 2016
Tuček, Milan
November research focused on priorities in funding of some individual areas of social policy from the state budget. Respondents should sort ten selected areas of social policy from the most important area to the least important area for them. Citizens perceive as the top priority the area of healthcare, followed by pensions and social security in sickness or in case of injury.
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Extrakty z rostlin jako směsi a jejich předběžné dělení superkritickým CO2
Sovová, Helena ; Sajfrtová, Marie ; Rochová, Kristina
This work concerns supercritical extraction from plants, a semi-continuous process where solutes are extracted from a fixed bed of plant particles to a stream of supercritical CO2. Though the efficiency of control of extract composition in this one-equilibrium-stage process is lower than in the counter-current column, the composition of extract is affected substantially by extraction conditions. Further equilibrium stages are represented by the following separation of extract from solute in two or more separators adjusted to different pressures and temperatures, where the least soluble components precipitate first.
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Determination of reference values of element contents in certified reference material SWCNT-1 by INAA a PGAA
Kučera, Jan ; Sturgeon, R. E. ; Grinberg, P. ; Oflaz, R. ; Paul, R. L. ; Bennett, J. W. ; De Nadai Fernandes, E. A. ; Kubešová, Marie ; Bacchi, M. A. ; Stopic, A. J.
Instrumental neutron activation analysis with both relative and k-0 standardization was used in four experienced laboratories to determine element mass fractions in single-wall carbon nanotube certified reference material (CRM) SWCNT-1. Results obtained were evaluated using the NIST “Type B On Bias” approach and yielded consensus values in agreement with NRCC certified values for Fe, Co, Ni and Mo and provided mass fraction values for thirteen additional elements, namely Na, Mg, Al, K, Ca, Ti, V, Cr, Mn, Br, La, W and Au. In addition, prompt gamma neutron activation analysis was employed to determine mass fractions of H, B, Co, Ni, and Mo. Results of this work provide a basis for the establishment of reference values of element mass fractions in CRM SWCNT-1, thus expanding its usability for more accurate characterization and benchmarking of similar nanotechnology materials.
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Search for Links between Organic Aerosols Measured by Aerosol Mass Spectrometer and EC/OC Analyzer
Vodička, Petr ; Kubelová, Lucie ; Makeš, Otakar ; Schwarz, Jaroslav
Carbonaceous aerosols form a major part of particulate matter suspended in the atmosphere. The organic part of aerosol represents a diverse group of substances that can be analyzed in different ways. In this work, the possible linkages between organic fractions measured by Compact Time-of-Flight Aerosol Mass Spectrometer (AMS; from Aerodyne) and a semi-online EC/OC analyzer (from Sunset Laboratories) were search. Each of these instruments provides a different kind of information. Organic fractions from EC/OC analyzer provide knowledges about a diferent volatility of organic carbon (OC) while AMS provide informations about a chemical composition of characteristic mass fragments. Thus, the main objective of this work was to determine whether the organic fractions from EC/OC analyzer can indirectly provide also information on the chemical composition or somehow more characterize type of aerosol.
Fulltext: content.csg -  PDF
Plný tet: SKMBT_C22014102013551 - PDF
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Supercritical Fluid Fractionation for 20-Hydroxyecdysone Enrichment in Leuzea carthamoides Extract
Sajfrtová, Marie ; Maščeník, J. ; Sovová, Helena ; Bártlová, Milena
Supercritical fluid extraction of 20-hydroxyecdysone (20-HE) using pure and modified carbon dioxide from seeds of Leuzea carthamoides was studied. The effect of operation conditions on the yields of whole extract and its minor component 20-HE was analysed in a series of experiments at pressures from 30 MPa to 60 MPa, temperatures from 40 °C to 80 °C and modifier (ethanol, methanol and acetone) concentrations in CO2 0-19 wt. %. The consecutively collected extract fractions were analysed using HPLC. The efficiency of SFE in terms of 20-HE concentration in extract and yield was compared with the efficiency of Soxhlet extraction with ethanol.
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Working-class fraction of middle classes under socialism
Zich, František
The contribution focuses on the rise of the socialist middle classes from politically engaged workers after 1948 in the Czech part of the Nisa Euroregion. Rising career tracks have been documented: direct progress to the senior post, preparation of labour intelligence, support by accepting children from working-class families to universities. According to intergenerational biographical comparison, life's careers showed a shift from the working-class way of life. This socialistic middle class gained social and cultural capital and successfully adapted to the new conditions after year 1989.
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