Surf-riding actions in reliable attractive following oceans for cases with a variety of LCBs and Froude information are mimicked utilizing the numerical model. Comes concerning display that the surfriding can't be forestalled by the modify of LCB. Be that as it may, it happens with an upper limit momentum when ship's focal point of lightness (COB) is stimulated towards stem contrasted with affe...

The swimbladder plays an important role in buoyancy regulation but is typically reduced or even absent in benthic freshwater fishes that inhabit fast flowing water. Here, we document, for the first time, a remarkable example of swimbladder sexual dimorphism in the highly rheophilic South Asian torrent minnows (Psilorhynchus). The male swimbladder is not only much larger than that of the female ...

We present a bioenergetic model for buoyancy regulation that incorporates the restrictions and costs of swimbladder regulation with four means of hydrodynamic lift production: hovering, swimming with extended pectoral fins, swimming with adjusted tilt angle, and body lift. Previous models addressing vertical migration in fish with swimbladders have either assumed no energetic cost or a static c...

This study investigates heat and mass transfer under natural convection flow along a vertical permeable surface with variable wall fluxes through porous medium. The non-Darcian model is employed for the effects of suction/blowing, inertia, buoyancy ratio, exponent flux, position parameter, Schmidt number, thermophoresis are considered. governing equations continuity, momentum, energy, concentra...

Abstract Here the assessment of entropy generation with Soret and Dufour impact in flow MHD Prandtl fluid along an unsteady stretching surface has been measured. Nonlinear mixed convection convective conditions for heat/mass transfer are imposed at surface. The outcome viscous dissipation radiation is considered heat features. obtained system nonlinear PDEs converted to ODEs by consuming dimens...

Sperm whales feed primarily on squid and often have to find their food at depths between 1000 and 2000 meters. To do this they require sophisticated buoyancy regulation. It has been known for some time that they achieve long-term buoyancy regulation by altering the temperature of their spermaceti organ, located in the enlarged snout. In a large male this organ may contain four tons of spermacet...

In this paper, growth and collapse of a vapour bubble generated due to a local energy input inside a rigid cylinder and in the absence of buoyancy forces is investigated using Boundary Integral Equation Method and Finite Difference Method .The fluid is treated as potential flow and Boundary Integral Equation Method is used to solve Laplace’s equation for velocity potential. Different ratios of ...

We investigate hitherto-unexplored flow characteristics inside a sessile droplet evaporating on heated hydrophobic and superhydrophobic surfaces and propose the use of evaporation-induced flow as a means to promote efficient "on-the-spot" mixing in microliter-sized droplets. Evaporative cooling at the droplet interface establishes a temperature gradient that induces buoyancy-driven convection i...

PURPOSE The purpose of this study was to develop and evaluate metronidazole loaded floating-mucoadhesive microsphere for sustained drug release at the gastric mucosa. METHODS Alginate gastroretentive microspheres containing metronidazole were prepared by ionic gelation method using sodium bicarbonate as gas forming agent, guar gum as mucoadhesive polymer, and Eudragit L100 as drug release mod...

Diving fatalities causes were investigated in 947 recreational open-circuit scuba diving deaths from 1992-2003. Where possible, cases were classified at each step of a four step sequence: trigger, disabling agent, disabling injury, cause of death (COD). The most frequent adverse events within each step were: (a) triggers 41% insufficient gas, 20% entrapment, 15% equipment problems; (b) disablin...