| VRI | viral respiratory infection; virtual reality imaging |
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| VRML | Virtual Reality Modeling Language |
| SAID | specific adaptation to imposed demand [principle] |
| TIP | thermal inactivation point; Toxicology Information Program; translation-inhibiting protein; tumor-in... |
| TP | temperature and pressure; temperature probe; temporal peak; temporoparietal; tension pneumothorax; t... |
| PCA | Principle component analysis |
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| RO | REality Orientation |
| VR | Virtual Reality |
| VRML | Virtual Reality Modeling Language |
| reality principle | The concept that the pleasure principle in personality development is modified by the demands of external reality; the principle or force that compels the growing child to adapt to the demands of external reality. (05 Mar 2000) |
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| reality | That which exists objectively and in fact, and can be consensually validated. Origin: L. Res, thing, fact (05 Mar 2000) |
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| reality adaptation | The ability to adjust to the world as it exists. (05 Mar 2000) |
| reality awareness | The ability to distinguish external objects as being different from oneself. (05 Mar 2000) |
| reality testing | The individual's objective evaluation of the external world and the ability to differentiate adequately between it and the internal world; considered to be a primary ego function. (12 Dec 1998) |
| reality therapy | A form of therapy in which the patient learns to fulfill his needs of involvement and responsibility which are basic to facing and accepting reality. (12 Dec 1998) |
| retreat from reality | Substitution of imaginary satisfactions or fantasy for relations with the real world. (05 Mar 2000) |
| active principle | A constituent of a drug, usually an alkaloid or glycoside, upon the presence of which the characteristic therapeutic action of the substance largely depends. (05 Mar 2000) |
| antianaemic principle | The material in liver (and certain other tissues) that stimulates haemopoiesis in pernicious anaemia; for practical purposes, the antianaemic effect of extracts from such tissues is approximately equivalent to the content of vitamin B12. (05 Mar 2000) |
| azygos vein principle | A principle based on the observation that animals can survive prolonged vena caval occlusion without sequelae: if blood from the azygos vein alone is permitted to enter the heart, patients are perfused during cardiac and pulmonary bypass at flows much less than the normal resting cardiac output. Synonym: low flow principle. (05 Mar 2000) |
| Bernoulli's principle | <physics> When friction is negligible, the velocity of flow of a gas or fluid through a tube is inversely related to its pressure against the side of the tube; i.e., velocity is greatest and pressure lowest at a point of constriction. Synonym: Bernoulli's principle, Bernoulli's theorem. (05 Mar 2000) |
| pain-pleasure principle | A psychoanalytic concept that, in a human's psychic functioning, he/she tends to seek pleasure and avoid pain; a term borrowed by experimental psychology to denote the same tendency of an animal in a learning situation. Synonym: pleasure principle. (05 Mar 2000) |
| Pauli's exclusion principle | The theory limiting the number of electrons in the orbit or shell of an atom; that it is not possible for any two electrons to have all four quantum numbers identical. (05 Mar 2000) |
| repetition-compulsion principle | In psychoanalysis, the impulse to redramatise or reenact earlier emotional experiences or situations. Synonym: principle of inertia. (05 Mar 2000) |
| melanophore-expanding principle | A polypeptide hormone secreted by the intermediate lobe of the hypophysis in humans (in neurohypophysis in certain other species) which causes dispersion of melanin by melanophores, resulting in darkening of the skin, presumably by promoting melanin synthesis; this effect is readily demonstated in some lower vertebrates, such as frogs and fish; alpha-melanotropin is an N-acetylated peptide with 13 amino acids; beta-melanotropin has 22 amino acids. Synonym: intermedin, melanocyte-stimulating hormone, melanophore-expanding principle. (05 Mar 2000) |
| Mitrofanoff principle | Use of an isolated appendix on a vascularised pedicle as a catheterizable route of access to the bladder from the skin. Synonym: Mitrofanoff principle. Origin: eppendico-+ L. Vesica, bladder, + G. Stoma, mouth (05 Mar 2000) |
| reality principle | (psychoanalysis) the governing principle of the ego |
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