This study investigated the effect of the coefficient of friction of a running surface on an athlete's sprint time in a sled-towing exercise. The coefficients of friction of four common sports surfaces (a synthetic athletics track, a natural grass rugby pitch, a 3G football pitch, and an artificial grass hockey pitch) were determined from the force required to tow a weighted sled across the sur...

Demersal Seining is an active fishing method applying two long seine ropes and a seine net. Demersal seining relies on fish responding to the seine rope as it moves during the fishing process. The seine ropes and net are deployed in a specific pattern encircling an area on the seabed. In some variants of demersal seining the haul-in procedure includes a towing phase where the fishing vessel mov...

The advantages of multihulls over monohulls are better running characteristics at high speeds and a larger deck area, which is critical for passenger ships. When designing, it necessary to choose geometric parameters, include the distance between hulls. A brief description existing methods calculating towing resistance multihull vessels provided in paper. New results an experimental study effec...

Fish receive much of their sensory information — used, for example, to guide their stunning schooling behaviour — from a particular sensory organ system, the lateral line. Hair cells sitting in neuromast organs that are scattered along the flank of the fish sense water movements, much as hair cells in our inner ear sense air movements. The lateral line provides the fish with information about m...

Abstract The purpose of this work is the validation hydrodynamic resistance for a small fishing vessel providing more details about ship’s hydrodynamics. selected ship traditional that has been sailing in Argentina than 20 years without previous numerical evaluation. Because absence optimization, might be non-efficient from consumption, operating and polluting point view. For reason, order to b...