Mr
Jan Bárta
(CTU in Prague)
4/22/10, 5:00 AM
Radiation Chemistry
Verbal
Radiation method of copper and cuprous oxide preparation produces material of high chemical purity and catalytic activity. Reduction of metal ions in aqueous solutions via UV, γ irradiation or accelerated electrons results in formation of nanosized particles of both Cu/Cu2O with uniform spherical shapes at normal temperature. This method of preparation is very simple and relatively...
Dr
Valeriy Luchnikov
(Institut de Science des Matériaux de Mulhouse CNRS)
4/22/10, 5:15 AM
Production and Application of Radionuclides
Verbal
We consider theoretically the possibility of programming the ageing processes in materials via the introduction of small quantities of unstable nuclei in a material’s structure. Ageing of materials is usually considered as a harmful and undesirable process, which limits the lifetime of many consumer products. In certain instances, however, changing of physico-chemical properties with time...
Irena Špendlíková
(KJCH FJFI CVUT)
4/22/10, 5:30 AM
Radiation Chemistry
Verbal
This study deals with the effects of irradiation on the stability and extraction properties of thiacalixarenes 1, the prospective liquid-liquid extractants for the extraction of actinides and lanthanides from aqueous solutions. Thiacalixarenes dissolved in various organic diluents were irradiated with 60Co γ rays or accelerated electrons with energy of 4.5 MeV. The...
Dr
Martin Cabalka
(NRI Rez, plc)
4/22/10, 5:45 AM
Radiation Chemistry
Verbal
The accelerated radiation and thermal ageing of cables has a special importance in the type qualification test of NPP cables as it should provide for the cable ageing by an accelerated but real process of ageing, i.e., by the homogeneous oxidation of the cable polymeric materials. A comparison of three cable ageing techniques was performed on the representative NPP cables based on EVA and...
Ms
Tereza Pavelková
(CTU in Prague, ČVUT jiný pracovní poměr)
4/22/10, 6:00 AM
Radiation Chemistry
Verbal
Catalytic activity of catalase from bovine liver was studied using experimental device designed for kinetic measurements of hydrogen peroxide decomposition at constant temperature and pressure. The kinetics of the reaction was evaluated by measuring the volume of released oxygen. The measurement was performed at four temperatures in the range of 25 – 45 °C. Rate constants of the reaction were...
Mr
Pavel Bláha
(CTU in Prague, ČVUT jiný pracovní poměr)
4/22/10, 6:15 AM
Radiation Chemistry
Verbal
Relatively high attention is paid to various agents (e.g. chemical substances [1], hyperthermia and/or radiation [2,3]) influencing the growth of microorganisms. The influence of radiation on the microbial cells may be indicated not only by the survival curves, but also by the growth curves of irradiated and non-irradiated cultures.
The aim of the study is to point out to some aspects of the...