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| ND | Doctor of Naturopathy; nasal deformity; natural death; Naval Dispensary; neonatal death; neoplastic ... |
|---|---|
| CBF | capillary blood flow; cerebral blood flow; ciliary beat frequency; coronary blood flow; cortical blo... |
| HBF | hand blood flow; hemispheric blood flow; hemoglobinuric bilious fever; hepatic blood flow; hypothala... |
| EHBF | estimated hepatic blood flow; exercise hyperemia blood flow; extrahepatic blood flow |
| MBF | medullary blood flow; muscle blood flow; myocardial blood flow |
| 1H NMR | High resolution proton nuclear magnetic resonance |
|---|---|
| PIXE | Proton Induced X-ray Emission |
| PPI | Proton Pump Inhibitor |
| PD | Proton density |
| PMR | Proton magnetic resonance |
| attention deficit disorder | An inability to control behaviour due to difficulty in processing neural stimuli. (12 Dec 1998) |
|---|---|
| attention deficit disorder with hyperactivity | A behaviour disorder originating in childhood in which the essential features are signs of developmentally inappropriate inattention, impulsivity, and hyperactivity. Although most individuals have symptoms of both inattention and hyperactivity-impulsivity, one or the other pattern may be predominant. The disorder is more frequent in males than females. Onset is in childhood. Symptoms often attenuate during late adolescence although a minority experience the full complement of symptoms into mid-adulthood. (12 Dec 1998) |
| attention deficit hyperactivity disorder | <psychiatry> A condition seen in children where there is increased motor activity in association with poor attention span. Often treated with amphetamine medications. (27 Sep 1997) |
| base deficit | A decrease in the total concentration of blood buffer base, indicative of metabolic acidosis or compensated respiratory alkalosis. (05 Mar 2000) |
| pulse deficit | The absence of palpable pulse waves in a peripheral artery for one or more heart beats, as is often seen in atrial fibrillation, the number of such missing pulse waves (usually expressed as heart rate minus pulse rate per minute). (05 Mar 2000) |
| deficit | A lack or deficiency. (18 Nov 1997) |
| oxygen deficit | The difference between oxygen uptake of the body during early stages of exercise and during a similar duration in a steady state of exercise; sometimes considered as the formation of the oxygen debt. (05 Mar 2000) |
| membrane-bound proton-translocating PPi synthase | <enzyme> From rhodospirillum rubrum; functions as an alternative coupling factor; n,n'-dicyclohexylcarbodiimide-sensitive; catalyses the phosphorylation of pi to ppi, the hydrolysis of ppi and the concomitant translocation of proton across the plasma membrane Registry number: EC 3.6.1.- Synonym: h(+)-ppi synthase (26 Jun 1999) |
| proton | <physics> An elementary atomic particle with a positive charge and a mass of about 1 amu. (09 Oct 1997) |
| proton acceptor | <chemistry> A base, an anionic substance that acceptsa proton during an acid-basereaction. (09 Oct 1997) |
| proton ATPase | <enzyme> An ion pump that actively transports hydrogen ions across lipid bilayers in exchange for ATP. Major groups are the F-type ATPases, that run in reverse to synthesise ATP in bacterial, mitochondrial and chloroplast membranes (ATP synthase) and the V-type ATPases found in intracellular vesicles with an acidic lumen and on certain epithelial cells (e.g. Kidney intercalated cells). Gastric H/K ATPase is a proton ATPase. (18 Nov 1997) |
| proton donor | <chemistry> An acid, a susbstance that donates protons in an acid-base reduction reaction. (10 Jan 1998) |
| proton-motive force | Energy that is generated by the transfer of protons or electrons across an energy-transducing membrane and that can be used for chemical, osmotic, or mechanical work. Proton-motive force can be generated by a variety of phenomena including the operation of an electron transport chain, illumination of a purple membrane, and the hydrolysis of ATP by a proton atpase. (12 Dec 1998) |
| proton pump | Integral membrane proteins that transport protons across a membrane against a concentration gradient. This transport is driven by hydrolysis of ATP by hydrogen-transporting ATP synthase. (12 Dec 1998) |
| proton pump inhibitor | <pharmacology> A group of anti-ulcer medications which work by binding to H+/K+ ATPase, an enzyme which is found on the secretory surface of parietal cells. It thereby inhibits the final transport of hydrogen ions (via exchange with potasium) into the gastric lumen. Examples of proton pump inhibitors include omeprazole and lansoprazole. (27 Sep 1997) |
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