In this paper, the effects of different hydrophobic coatings on the surface of covered electrodes on the quality of wet welded carbon steel joints were discussed. Commonly available hydrophobic substances used in industrial applications were selected for the research. The aim of using waterproof coatings was to check the possibility to decreasing the susceptibility of high-strength low-alloy S460N steel to cold cracking. During experiments diffusible hydrogen content in deposited metal determination by mercury method, metallographic macro- and microscopic testing and hardness measurements were performed. Investigations showed that waterproof coatings laid on covered electrodes can improve the quality of wet welded joints, by decreasing the Vickers HV10 hardness in heat-affected zone and decreasing the diffusible hydrogen content in deposited metal, which minimalize possibility of cold cracking.

The importance of music in the general development of kindergarten children implies that teachers providing education, including music education, should be equipped with elaborate musical skills that, as might be assumed, should become a vital element taken into consideration during preschool teacher interviews� Research conducted in the Silesian region over the years 2014 -2015 shows that the surveyed directors of kindergartens view musical skills, in most cases, as an essential supplement to other competences of teachers, among which the ability to play a melodic instrument and vocal skills are, in their opinion, the most important musical competences� The majority of directors only review documents confirming such competences, whereas almost a quarter of the surveyed participants admit to not verifying musical competences of future kindergarten teachers; the surveyed individuals claim, most frequently, that kindergarten teachers are sufficiently prepared to play a role of musical educators for small children, and that kindergarten teachers, instead of specialist musicians, should implement the content stipulated in the core curriculum� What is more, no statistically significant differences between respondents from urban and rural environments were identified�