Otolith morphology analysis is one of the main tools used for fish or stock identification. Moreover, otolith shape can also be in animal dietary studies (stomach content) identification prey fishes and their size according to relationship between sizes. In present study, length morphological dimensions was investigated sabre squirrelfish, Sargocentron spiniferum (Forsskål, 1775) (family: Holoc...

Benzenoid hydrocarbons have regular structures, attracting the opportunity to test structural descriptors of their series. In present study, we compared information entropy, Wiener indices, topological efficiencies, roundness, and symmetries oligoacenes, phenacenes, helicenes. We found discussed mismatches between symmetry benzenoids. Among studied series, helicenes demonstrate parity effect wh...

Hybrid composite-metal stacks (HCMS) combine metal alloys and composite materials are used in the manufacturing maintenance of aircrafts. Drilling is an important process necessary for installing rivets fuselages. This work sought to identify influence cooled compressed air high-speed cutting (HSC) on drilling multi-material joints with different configurations. Among factors observed type (car...

apart from regular wheel wear such as decreasing wheel diameters and reduced flange thicknesses and heights, wheel flats (wf) and oval wheels (or oor, out-of-roundness) are the most common wheelset problems for railway vehicles. within the fp7 research project “saferail”, apt has developed an innovative wheelset monitoring system so-called “wheel flat and out of roundness monitoring (worm) syst...