| DSST | Digit Symbol Substitution Task |
|---|---|
| PTCRA | percutaneous transluminal coronary rotational ablation |
| BD | barbital-dependent; barbiturate dependence; base deficit; base of prism down; basophilic degeneratio... |
| BE | 1) Bacterial Endocarditis 2) Base Excess 3) Below the Elbo... |
| bp | base pair; ¿°±â½Ö |
| DSS | Digit Symbol Substitution |
|---|---|
| RAO | Rotational acetabular osteotomy |
| RA | Rotational atherectomy |
| REDOR | Rotational echo double-resonance |
| D.S. | degree of substitution |
stabilized occlusion
| base substitution | <molecular biology> One nucleotide base is replaced by another in a DNA molecule. This is also called a point mutation. (09 Oct 1997) |
|---|---|
| rotational axis | An imaginary line around which a removable partial denture tends to rotate. Synonym: rotational axis. (05 Mar 2000) |
| rotational nystagmus | Jerky nystagmus arising from stimulation of the labyrinth by rotation of the head around any axis and induced by change of motion. (05 Mar 2000) |
| rotational transform | <radiobiology> \iota = 2PI/q) Due to the combination of applied toroidal field and induced poloidal field, the magnetic field lines wind helically around the torus (and on most flux surfaces they fill the surface ergodically). The rotational transform is a measure of this helicity, and is defined as the average angle the field line shifts in the poloidal direction per complete circuit in the toroidal direction. The quantity q = 2\pi / \iota is known as the "safety factor'' because of its role in stability theory. A magnetic field configuration is said to posses rotational transform if the lines of force, after one complete circuit around the configuration (for example, a torus) do not simply close exactly on themselves, but are instead rotated through some angle about the magnetic axies. (13 Nov 1997) |
| amino acid substitution | The naturally occurring or experimentally induced replacement of one or more amino acids in a protein with another. If a functionally equivalent amino acid is substituted, the protein may retain wild-type activity. Substitution may also diminish or eliminate protein function. Experimentally induced substitution is often used to study enzyme activities and binding site properties. (12 Dec 1998) |
| conservative substitution | In a gene product, a substitution of one amino acid with another with generally similar properties (size, hydrophobicity, etc), such that the overall functioning is likely not to be seriously affected. (18 Nov 1997) |
| stimulus substitution | <psychology> Learning that takes place when a conditioned stimulus is paired with an unconditioned stimulus. (12 Dec 1998) |
| substitution | 1. The act of putting one thing in the place of another, especially the chemical replacement of one element or radical by some other. 2. A defense mechanism, operating unconsciously, in which an unattainable or unacceptable goal, emotion or object is replaced by one that is attainable or acceptable. Origin: L. Substitutio, from statuere = to place (18 Nov 1997) |
| substitution mutation | A mutation caused by a nucleotide base being replaced by a different one. (09 Oct 1997) |
| substitution product | A product obtained by replacing one atom or group in a molecule with another atom or group. (05 Mar 2000) |
| substitution therapy | Replacement therapy, particularly when replacement is not physiological but entails administration of a substitute. (05 Mar 2000) |
| substitution transfusion | Removal of most of a patient's blood followed by introduction of an equal amount from donors. Synonym: exsanguination transfusion, substitution transfusion, total transfusion. (05 Mar 2000) |
| symptom substitution | An unconscious psychological process by which a repressed impulse is indirectly manifested through a particular symptom, e.g., anxiety, compulsion, depression, hallucination, obsession. Synonym: symptom formation. (05 Mar 2000) |
| freeze substitution | A modification of the freeze-drying method in which the ice within the frozen tissue is replaced by alcohol or other solvent at a very low temperature. (12 Dec 1998) |
| acid-base balance | The normal balance between acid and base in the blood plasma, expressed in the hydrogen ion concentration or pH, resulting from the relative amounts of acidic and basic materials ingested and produced by body metabolism, compared to the relative amounts of acidic and basic materials excreted from the body and consumed by body metabolism; the normal state of acid-base balance is not one of neutrality, with equal concentrations of hydrogen and hydroxyl ions, but a more alkaline state with a certain excess of hydroxyl ions. Synonym: acid-base equilibrium. (05 Mar 2000) |
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