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Catalysts preparation and investigation: laboratory exercise for students

100%

Zawadzki W.

2019

tom 74

nr 1

Catalysts preparation, investigation its basic properties, activity and selectivity measurements in carbon dioxide methanation reaction was proposed as laboratory course for international students doing a period of study at Maria Curie-Sklodowska University within the frame of the Erasmus mobility programme.

Activity and stability of cobalt-manganese catalysts in the process of methane flameless combustion

51%

Rotko M. , Redko V. , Zawadzki W.

2019

tom 74

nr 2

Oxide cobalt-manganese catalysts with different contents of cobalt and manganese, as well as pure cobalt and manganese catalysts have been tested in the process of methane flameless combustion (complete catalytic oxidation). The X-ray diffraction and X-ray photoelectron spectroscopy results showed that cobalt-manganese catalysts mainly composed of the spinel phase of Co3O4, Mn2CoO4 and/orMnCo2O4. The highest initial activity was presented bythe cobalt-manganese catalyst withahigh cobalt content.However, after 50-hours stability test the highest activity was presented by the cobalt-manganese catalyst with Co and Mn content close to the equimolar value.

Attitude, motivation and self-esteem in mathematics, science and technology researched by the SECURE project – Polish results against the background in Europe

45%

Sokołowska D. , de Meyere J. , Wojtaszek M. , Zawadzki W. , Brzezinka G.

2015

nr 1

27-38

The SECURE project was founded under the 7th Framework Programme to provide research results of current mathema-tics, science and technology (MST) curricula for pupils aged 5, 8, 11 and 13 in ten EU member states, including Poland. The curricula have been examined throughout three different representations, as they are intended by the authorities (in legal documents), implemented by the teachers and perceived by the learners. The research framework at all three levels has been constructed upon the curriculum spider web (van den Akker, 2003) with addition of item “attitude”. The study involved altogether almost 9000 pupils, 1500 teachers and 600 schools in consortium member states. In this contribution a part of research concerning the average results on (1)learners’ attitude towards MST school subjects, (2) influence of topics, activities and teachers on liking the MST subjects by pupils, (3) learners’ self-esteem in MST subjects and (4) their opinion on the easiness of MST subjects are presented. In particular, we focus on Polish results (regions of Krakow City and Krakow County) and compare them with the European average. The study shows a substantial drop in all the variables measured, mostly evident between ages 8 and 11. In general the trends across ages and subjects in Poland are similar to those in Europe with a few exceptions indicated in the paper.