Mass settling of phytoplankton can result in the accumulation of a layer of phytodetritus on the sea floor. In order to determine the fate of this organic matter, we must know whether the phytodetritus may be returned to the water column by resuspension. This study was designed to measure the critical bed shear stress (t0crit) for resuspension of phytodetritus and to test whether t0crit differs...

Fluidized beds are widely applied in many industrial processes. In order to control and optimize the operation of a fluidized bed, it is necessary develop reliable methods for measurement bubble characteristics monitor status bed. Electrostatic sensing based on detection charges particles have been characterize particle motion However, there limited research using electrostatic due complex phen...

Staphylococcal enterotoxin A (SEA) is a microbial superantigen that activates T-lymphocytes and induces production of various cytokines, including tumor necrosis factor-alpha (TNFalpha). Previously, it was shown that SEA activates the hypothalamic-pituitary-adrenal axis and augments gustatory neophobic behaviors. In the present study, it was hypothesized that these effects involve neuronal acti...

The importance of asymmetric tidal cycles in the transport and accumulation of sediment in shallow well-mixed estuaries is well establishe!;L .Along the U.S. Atlantic Coast, tidal amplitude, bottom friction, and system geometry determine tidal distortion as documented at 54 tide gauges in 26 tidally dominated estuaries of varying geometry having negligible freshwater inflow. Analyses of sea-sur...

The rate of energy expenditure and acquisition are fundamental components of an animals’ life history. Within mammals, the otariids (sea lions and fur seals) exhibit energetically expensive life styles, which can be challenging in equatorial regions where resources are particularly limited and unpredictable. To better understand how this energetically expensive life history pattern functions in...

The shallow marine Late Holocene wedge of the northern Salerno Bay shelf (Southern Tyrrhenian Sea) discloses the presence of four decimetric shelf-tapering sand beds. Their internal features, depicted by cores analysis and their stratigraphic position, revealed by VHR seismic investigations, inferred sandy layers as being the result of flash deposition, storm controlled, thus episodic. Stratigr...

Human interventions and climate change can heavily influence the large-scale morphological development of tidal basins. This has implications on sediment management strategies, as well ecological recreational purposes. Examples impacted basins are those in Western Dutch Wadden Sea. The closure a large sub-basin 1932 triggered shift budgets remaining basins, leading to infilling that is still on...

The spatial distribution of sea bed covers and seagrass in coastal waters is of key importance in monitoring and managing Mediterranean shallow water environments often subject to both increasing anthropogenic impacts and climate change effects. In this context we present a methodology for effective monitoring and mapping of Posidonia oceanica (PO) meadows in turbid waters using remote sensing ...

Introduction Bivalves from the genus of Mytilus are present throughout the world oceans and seas. Among them, family of Mytilidae is represented with 5 species, from which two are commercially important in Europe: Mytilus edulis (Blue mussel) and Mytilus galloprovincialis (Mediterranean mussel). Mediterranean mussel is distributed throughout the Mediterranean coast, but is also found on the coa...

The problem of designing the pellet characteristics for existing fixed-bed reactors has been studied. The reactor is assumed to be a unidimensional, plug-flow, heterogeneous type. Three particle shapes, two intraparticle mass transfer mechanisms, two kinds of film resistance to mass transfer and two poisoning patterns have been considered. An economic balance to both product market price and pe...