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Within the framework of work on the anatomical structure and durability features of wood, as well as analyses of radial growth, a preliminary analysis was carried out in regard to variation in the heartwood within Black locust trees. The research was carried out in three stands of straight-stemmed trees in western Poland. The variation displayed by the heartwood around its circumference and the eccentricity...
An automatic fibre size analyser - KajaaniFiberLab was used in studies designed to examine and analyse the genetic basis of fibre size variability. Fast and accurate measurement in accordance with the standards may, however, give incorrect results due to errors associated with the multi-staged maceration of wood samples to obtain disintegrated fibre water suspension. Errors in fibre size estimation...
W artykule zaprezentowano wybrane zagadnienia z zakresu funkcjonowania wojsk specjalnych, głównie w odniesieniu do ich narodowej perspektywy. Autor, wskazując na światowe uwarunkowania i istniejące trendy w tym obszarze, odnosi się do analizy powietrznych operacji specjalnych, wskazując na typowe dla tego rodzaju sił zbrojnych zadania w operacji połączonej oraz sposób ich planowania, organizacji i...
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