To quantitatively study the uptake and effects of microplastic (MP) in planktonic species and other aquatic biota in a laboratory setup, it is paramount to monitor MP bioavailability. Many polymers are inherently hydrophobic and can elicit surface charges. Both factors can contribute to reduced...
A new simplified method for analysis of 3D motion dynamics of axisymmetric slender bodies falling from air through water is presented. Slender-body theory for potential flow of incompressible water is combined with 2D + t theory to account for viscous cross-flow separation in the submerged phase...
Calanus finmarchicus is a keystone zooplankton species that is commercially harvested and is critical in sustaining many important fisheries in the North Atlantic. However, due to their patchy population distributions, they are notoriously difficult to map using traditional ship-based techniques...
Cod heads were hydrolysed using different enzymes (Alcalase, Flavourzyme, Papain, Bromelain, and Protamex) at concentration of 0.1% for 1 hour and different water/raw material ratios. The most promising processing conditions were further verified in large-scale trials in a pilot plant. The results...
Wave-induced response of a closed floating fish cage consisting of a vertical circular cylinder with an external toroidal floater is studied theoretically and experimentally. A main purpose was to investigate how the internal sloshing would influence the global response of the cage, the interior...
Aquaculture is an industry that has developed rapidly over the past decades. Despite several hazards in the operations, emergency preparedness is not at the same level as in the rest of the maritime industry. This paper highlights some possibilities to increase the aquaculture industry’s coastal...
We present a discrete optimisation model that chooses an optimal fleet of vessels to support maintenance operations at Offshore Wind Farms (OFWs). The model is presented as a bi-level problem. On the first (tactical) level, decisions are made on the fleet composition for a certain time horizon. On...
This paper proposes a new sliding mode-based guidance law for mobile robots in the three-dimensional space that offer strong robustness properties and intuitive tuning. The guidance law is proven to guide a vehicle to a boundary region centered in the path particle in finite time. Furthermore, it is...