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Steel-concrete composite elements are very often used as main elements of floors or in bridge engineering as main carrying girders. This paper presents computational models and an analysis of natural vibrations conducted on steel-concrete composite beams. Simulation results were compared with experimental research results for beams in groups B1 and B2. In the group of beams B1 a connection that consisted...
This paper presents a methodology of force model development. A special experimental stand has been used for cutting force identification to eliminate the regenerative phenomenon and improve the accuracy. The stand was used to carry out the cutting tests with the constant chip thickness. Also tests with sinusoidally varying chip thickness have been performed. During the tests cutting force and relative...
Z kłączy cantedeskii odmian ‘Mango’, ‘Treasure’, ‘Black Magic’ z objawami miękkiej zgnilizny, wyizolowano bakterie tworzące szaro-białe kolonie na pożywkach King B i agar odżywczy z sacharozą. Fenotypowa charakterystyka tych bakterii umożliwiła ich zaklasyfikowanie do rodzaju Bacillus. Ponadto analiza sekwencji fragmentu genu kodującego 16S rRNA badanych bakterii wykazała, że należą one do gatunku...
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