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]

convection

/con·vec·tion/ (kon-vek´shun) the act of conveying or transmission, specifically transmission of heat in a liquid or gas by bulk movement of heated particles to a cooler area.convec´tive

convection

[kənvek′shən]
Etymology: L, convehere, to bring together
(in physics) the transfer of heat through a gas or liquid by the circulation of heated particles.

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.

convection

the act of conveying or transmission; specifically, transmission of heat in a liquid or gas by circulation of heated particles.
References in periodicals archive ?
As mentioned before, the most commonly used convection correlations at window surfaces are based on the assumption that natural convection is the dominant mode of convective heat transfer.
He reported five combinations of microwave, convection and browner cooking, and 100 preprogrammed cooking modes.
On laminar hydromagnetic mixed convection flow in a vertical channel with symmetric and asymmetric wall heating conditions, Int.
A fundamental difference between convection reflow and VPS is heat transfer efficiency.
The influence of natural convection on the thermal quality of insulated cavity construction, Building Research and Practice 6: 345-354.
When using the gravity convection feature of a microbiological incubator, temperature distribution is based on warm air moving upward, although there is no fan to actively distribute air inside the chamber.
However, only two locations - the tropics and China - showed stronger convection.
In 1968, scientists theorized that even longer-lived and larger convection cells, big enough to span the entire convective zone, maintain the fast rotation researchers had long observed around the sun's equator; without such cells, the poles should rotate faster than the equator.
The JTWC has stated that due to the presence of a poorly defined, low level circulation and decrease in central convection, there is no potential for the development of a significant tropical cyclone.
The influence of Soret-induced solute buoyancy forces on the natural convection of a binary fluid saturating a porous enclosure has received only limited attention although its importance in many engineering practices.
He covers equations, general concepts, and methods of analysis; classical models, characteristic numbers, and scaling arguments; examples of thermal fluid convection and pattern formation in nature and technology; thermogravitation convection and the Rayleigh-Benard problem; the dynamics of thermal plumes and related regimes of motion; systems heated from the side and the Hadly flow; thermogravitational convections in inclined systems; thermovibrational convection; Marangoni-Benard convection; thermocapillary convection; mixed boyancy-Marangoni convection; hybrid regimes with vibrations; and flow control by magnetic fields.