convection


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current

 [kur´ent]
1. something that flows.
2. specifically, electricity transmitted through a circuit.
alternating current a current that periodically flows in opposite directions; its amplitude fluctuates as a sine wave.
convection current a current caused by movement by convection of warmer fluid into an area of cooler fluid.
direct current a current that flows in one direction only; when modeled as a wave, its amplitude is constant. When used medically it is called galvanic current. This current has distinct and important polarity and marked secondary chemical effects.
galvanic current a steady direct current.
current of injury an electric current that flows between injured myocardium and normal myocardium, because such cells have a reduced membrane potential; it may be either diastolic or systolic.
current of injury, diastolic the current that flows from injured to noninjured tissue during electrical diastole.
current of injury, systolic the current that flows from healthy tissue to injured tissue during electrical systole.
inwardly rectifying current current that rectifies so that it passes more easily towards the interior of a cell.
leakage current the electrical current that exists in the parts or metal case of electrical equipment.
outwardly rectifying current current that rectifies so that it passes more easily towards the exterior of a cell.
potassium rectifying c's transmembrane currents that rectify inwardly or outwardly to make adjustments in cellular functions; they are mainly responsible for the repolarization phase of the action potential. There are at least six mechanisms by which potassium ions move across cardiac cell membranes in the role of rectifier.

con·vec·tion

(kon-vek'shŭn),
Conveyance of heat in liquids or gases by movement of the heated particles, as when the layer of water at the bottom of a heated pot rises or the warm air of a room ascends to the ceiling.
[L. con-veho, pp. -vectus, to carry or bring together]

con·vec·tion

(kŏn-vek'shŭn)
Conveyance of heat in liquids or gases by movement of the heated particles, as when the layer of water at the bottom of a heated pot rises or the warm air of a room ascends to the ceiling.
[L. con-veho, pp. -vectus, to carry or bring together]

convection

the propagation of heat through liquids and gases by the movement of the heated particles, increasing their kinetic energy.
References in periodicals archive ?
Several studies have shown that current NWP systems struggle to properly simulate organized tropical convection (Brunet et al.
Well before the development of forced convection, in the beginning of the vapor phase-IR reflow rivalry, IR processing was at a disadvantage because panel or "area source" IR was not yet developed, and IR sources were lamps or quartz rod emitters.
Cooking can be redefined with this 30-litre convection microwave.
Additionally, there is no reported work on mixed convection heat transfer for wide range of Richardson number over tandem circular cylinders with different distance between them at low Reynolds number.
The viscous dissipation is also assumed to be negligible in the energy equation as the motion is due to free convection only.
At a later time, the convection began to be promoted and the liquid-solid interface began to form an arch.
In the expression, [increment of x] is the total depth of convection. The depth of convection at time t:
Chandrasekhar [43] discussed Rayleigh-Benard convection in a regular fluid with a linear temperature profile, both with and without the effect of rotation.
Present work therefore aims to visualize of the streamlines, isotherms, heatlines, and local entropy generation of the combined mechanism of natural and Marangoni convection in upper free surface enclosure subjected to a constant bottom wall heat flux as boundary condition.
Hsu and Cheng [2] reported mixed convection flow in porous medium about a vertical plate.
Kent (2009) investigated the natural convection in isosceles triangular enclosures for a cold base wall and hot inclined walls.
The Blodgett SHO-E Convection Oven has been Energy Star[R] qualified to provide operators the highest levels of convection heating efficiency within their kitchens.