| ion channel | <cell biology> A transmembrane pore that presents a hydrophilic channel for ions to cross a lipid bilayer down their electrochemical gradients. Some degree of ion specificity is usually observed and typically a million ions per second may flow. Channels may be permanently open, like the potassium leak channel or they may be voltage gated, like the sodium channel or ligand gated like the acetylcholine receptor. (27 Oct 1998) |
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| ion channel gating | The opening and closing of ion channels due to a stimulus. The stimulus can be a change in membrane potential (voltage-gated), drugs or chemical transmitters (ligand-gated), or a mechanical deformation. Gating is thought to involve conformational changes of the ion channel which alters selective permeability. (12 Dec 1998) |
| transnexus channel | A hexagonal 15-20A |
| ligand-gated channel | A class of ion channel's whose ionic permeability is regulated by cell membrane receptors that respond to specific extracellular chemical signals. (05 Mar 2000) |
| ligand gated ion channel | A transmembrane ion channel whose permeability is increased by the binding of a specific ligand, typically a neurotransmitter at a chemical synapse. The permeability change is often drastic, such channels let through effectively no ions when shut, but allow passage at up to 10exp7 ions sexp 1 when a ligand is bound. Recently, the receptors for both acetylcholine and GABA have been found to share considerable sequence homology, implying that there may be a family of structurally related ligand gated ion channels. (18 Nov 1997) |
| channel |
The bed of a stream or waterway
출처: resweb.llu.edu/rford/docs/VGD/GSLVT/gslglossary.ht...
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| channel |
One piece of information stored with an image. For example, a true colour image has 3 channels, red, green and blue.
출처: www.all-things-photography.com/digital-dictionary....
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| channel |
One of two or more signals in a multi-signal sonar system; the area on the display or sonar record where data from this signal is shown. Modern instrumented sonar systems may utilize separate channels for many kinds of data such as: port and starboard side scan, sub bottom, towbody heading, depth, conductivity, temperature, and magnetometry.
출처: www.instituteformarineacoustics.org/SonarPrimer/da...
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1. That part of a body of water deep enough for navigation through an area otherwise not suitable. It is usually marked by a single or double line of buoys and sometimes by range markers. 2. The deepest part of a stream, bay, or strait, through which the main current flows. 3. A name given to a large strait, for example, the English Channel.
출처: www.boatersdream.com/libarticles.cfm
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| channel |
A channel is an area that contains flowing water confined by banks.
출처: www.ngdir.ir/SiteLinks/Kids/html/g001_River.htm
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| channel | the maximum data rate that can be attained over a given channel |
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| channel | freshwater food fish common throughout central United States |
| channel | freshwater food fish common throughout central United States |
| channel | a national park in California featuring sea birds and marine life |
| channel | the railroad tunnel between France and England under the English Channel |
| channel | switch channels, on television |
| channel | management through specified channels of communication |
| channel | cause to form a channel |
| channel | send from one person or place to another |
| channel | make a channel for |
| channel | direct the course |
| channel | management through specified channels of communication |