| ABS | abdominal surgery; acute brain syndrome; Adaptive Behavior Scale; admitting blood sugar; adult bovin... |
|---|---|
| MARS | magnetic anchor retinal stimulation; methionyl-transfer ribonucleic acid synthetase; mouse antirat s... |
| A [band] | the dark-staining zone of a striated muscle |
| BBN | broad band noise |
| bd | band; bundle; twice a day [Lat. bis die] |
| AKAP | A Kinase Anchor Protein |
|---|---|
| SEVC | single electrode voltage clamp |
| ABS | Amniotic Band Syndrome |
| CK-MB | Creatine kinase-myocardial band |
| DBB | Diagonal Band of Broca |
| anchor | 1. A iron instrument which is attached to a ship by a cable (rope or chain), and which, being cast overboard, lays hold of the earth by a fluke or hook and thus retains the ship in a particular station. The common anchor consists of a straight bar called a shank, having at one end a transverse bar called a stock, above which is a ring for the cable, and at the other end the crown, from which branch out two or more arms with flukes, forming with the shank a suitable angle to enter the ground. Formerly the largest and strongest anchor was the sheet anchor (hence, Fig, best hope or last refuge), called also waist anchor. Now the bower and the sheet anchor are usually alike. Then came the best bower and the small bower (so called from being carried on the bows). The stream anchor is one fourth the weight of the bower anchor. Kedges or kedge anchors are light anchors used in warping. 2. Any instrument or contrivance serving a purpose like that of a ship's anchor, as an arrangement of timber to hold a dam fast; a contrivance to hold the end of a bridge cable, or other similar part; a contrivance used by founders to hold the core of a mold in place. 3. That which gives stability or security; that on which we place dependence for safety. "Which hope we have as an anchor of the soul." (Heb. Vi. 19) 4. An emblem of hope. 5. A metal tie holding adjoining parts of a building together. Carved work, somewhat resembling an anchor or arrowhead; a part of the ornaments of certain moldings. It is seen in the echinus, or egg-and-anchor (called also egg-and-dart, egg-and-tongue) ornament. 6. <zoology> One of the anchor-shaped spicules of certain sponges; also, one of the calcareous spinules of certain Holothurians, as in species of Synapta. Anchor ice. See Ice. Anchor ring. <mathematics> The crossbar at the top of the shank at right angles to the arms. The anchor comes home, when it drags over the bottom as the ship drifts. Foul anchor, the anchor when it hooks, or is entangled with, another anchor, or with a cable or wreck, or when the slack cable entangled. The anchor is acockbill, when it is suspended perpendicularly from the cathead, ready to be let go. The anchor is apeak, when the cable is drawn in do tight as to bring to ship directly over it. The anchor is atrip, or aweigh, when it is lifted out of the ground. The anchor is awash, when it is hove up to the surface of the water. At anchor, anchored. To back an anchor, to increase the holding power by laying down a small anchor ahead of that by which the ship rides, with the cable fastened to the crown of the latter to prevent its coming home. To cast anchor, to drop or let go an anchor to keep a ship at rest. To cat the anchor, to hoist the anchor to the cathead and pass the ring-stopper. To fish the anchor, to hoist the flukes to their resting place (called the bill-boards), and pass the shank painter. To weigh anchor, to heave or raise the anchor so as to sail away. Origin: OE. Anker, AS. Ancor, oncer, L. Ancora, sometimes spelt anchora, fr. Gr, akin to E. Angle: cf. F. Ancre. See Angle. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| anchor splint | A splint used for fracture of the jaw, with wires around teeth and a rod to hold it in place. (05 Mar 2000) |
| GPI anchor | <biochemistry, molecular biology> Common modification of the C terminus of membrane attached proteins in which a phosphatidyl inositol moiety is linked through glucosamine and mannose to a phosphoryl ethanolamine residue that is linked to the C terminal amino acid of the protein by its amino group. Glypiation is the sole means of attachment of such proteins to the membrane. The name comes from the addition of glycosyl phosphatidyl inositol (PI). (18 Nov 1997) |
| Gant's clamp | A right-angled clamp used in haemorrhoidectomy. (05 Mar 2000) |
| Gaskell's clamp | An instrument for crushing the atrioventricular bundle in experimental animals and thus producing heart block. (05 Mar 2000) |
| Rankin's clamp | A three-bladed clamp used in resection of colon. (05 Mar 2000) |
| gingival clamp | A springlike metal piece encircling or grasping the cervix of a tooth and shaped so as to retract the gingival tissue. (05 Mar 2000) |
| patch clamp | <physiology> A specialised and powerful variant of voltage clamping, in which a patch electrode of relatively large tip diameter (5m) is pressed tightly against the plasma membrane of a cell, forming an electrically tight, gigohm seal. The current flowing through individual ion channels can then be measured. Different variants on this technique allow different surfaces of the plasma membrane to be exposed to the bathing medium: the contact just described is a cell attached patch. If the electrode is pulled away, leaving just a small disc of plasma membrane occluding the tip of the electrode, it is called an inside out patch. If suction is applied to a cell attached patch, bursting the plasma membrane under the electrode, a whole cell patch (similar to an intracellular recording) is formed. If the electrode is withdrawn from the whole cell patch, the membrane fragments adhering to the electrode reform a seal across the tip, forming an outside out patch. (15 Mar 2000) |
| patch-clamp techniques | An electrophysiologic technique for studying cells, cell membranes, and occasionally isolated organelles. All patch-clamp methods rely on a very high-resistance seal between a micropipette and a membrane; the seal is usually attained by gentle suction. The four most common variants include on-cell patch, inside-out patch, outside-out patch, and whole-cell clamp. Patch-clamp methods are commonly used to voltage clamp, that is control the voltage across the membrane and measure current flow, but current-clamp methods, in which the current is controlled and the voltage is measured, are also used. (15 Mar 2000) |
| Payr's clamp | A clamp used in gastrectomy or enterectomy. (05 Mar 2000) |
| glucose clamp technique | <technique> Maintenance of a constant blood glucose level by perfusion or infusion with glucose or insulin. It is used for the study of metabolic rates (e.g., in glucose, lipid, amino acid metabolism) at constant glucose concentration. (12 Dec 1998) |
| voltage clamp | <physiology, technique> A technique in electrophysiology, in which a microelectrode is inserted into a cell and current injected through the electrode so as to hold the cells membrane potential at some predefined level. The technique can be used with separate electrodes for voltage sensing and current passing, for small cells, the same electrode can be used for both. Voltage clamp is a powerful technique for the study of ion channels. See: patch clamp. (18 Nov 1997) |
| Goldblatt's clamp | A clamp applied experimentally to the renal artery to damp pulse pressure and thereby produce chronic hypertension by activation of the renin-angiotensin system. (05 Mar 2000) |
| right angle clamp | A clamp with a short 90 |
| rubber dam clamp | A springlike metal piece encircling or grasping the cervix of a tooth and so shaped as to prevent a rubber dam from coming off the tooth. (05 Mar 2000) |
Á¦Ç°¸í |
ÆÇ¸Å»ç |
º¸ÇèÄÚµå | ¼ººÐ/ÇÔ·® | ±¸ºÐ/º¸Çè±Þ¿© |
|---|
Á¦Ç°¸í |
ÆÇ¸Å»ç |
º¸ÇèÄÚµå | ¼ººÐ/ÇÔ·® | ±¸ºÐ/º¸Çè±Þ¿© |
|---|