| sex behaviour | Sexual activities of humans. (12 Dec 1998) |
|---|---|
| sex behaviour, animal | Sexual activities of animals. (12 Dec 1998) |
| social behaviour | Any behaviour caused by or affecting another individual, usually of the same species. (12 Dec 1998) |
| social behaviour disorders | Behaviours which are at variance with the expected social norm and which affect other individuals. (12 Dec 1998) |
| solid renal mass | <radiology> MALIGNANT until proven otherwise!, renal cell carcinoma (85%), other malignancy (10%), renal sarcoma, lymphoma, transitional cell carcinoma, metastases, benign mass (5%), oncocytoma, angiomyolipoma (fat present), fibroma (12 Dec 1998) |
| solitary echogenic liver mass | <radiology> Haemangioma, focal fatty infiltration, hepatoma, adenoma, focal nodular hyperplasia, hepatic lipoma (12 Dec 1998) |
| spatial behaviour | Reactions of an individual or groups of individuals with relation to the immediate surrounding area including the animate or inanimate objects within that area. (12 Dec 1998) |
| spectrometry, mass, fast atom bombardment | A mass spectrometric technique that is used for the analysis of a wide range of biomolecules, such as glycoalkaloids, glycoproteins, polysaccharides, and peptides. Positive and negative fast atom bombardment spectra are recorded on a mass spectrometer fitted with an atom gun with xenon as the customary beam. The mass spectra obtained contain molecular weight recognition as well as sequence information. (12 Dec 1998) |
| spectrometry, mass, matrix-assisted laser desorption-ionization | A mass spectrometric technique that is used for the analysis of large biomolecules. Analyte molecules are embedded in an excess matrix of small organic molecules that show a high resonant absorption at the laser wavelength used. The matrix absorbs the laser energy, thus inducing a soft disintegration of the sample-matrix mixture into free (gas phase) matrix and analyte molecules and molecular ions. In general, only molecular ions of the analyte molecules are produced, and almost no fragmentation occurs. This makes the method well suited for molecular weight determinations and mixture analysis. (12 Dec 1998) |
| spectrometry, mass, secondary ion | A mass-spectrometric technique that is used for microscopic chemical analysis. A beam of primary ions with an energy of 5-20 kiloelectronvolts (kev) bombards a small spot on the surface of the sample under ultra-high vacuum conditions. Positive and negative secondary ions sputtered from the surface are analyzed in a mass spectrometer in regards to their mass-to-charge ratio. (12 Dec 1998) |
| spectrum analysis, mass | Analysis of the mass of an object through means of determining the wave length(s) at which electromagnetic energy is absorbed by that object. (12 Dec 1998) |
| stereotyped behaviour | Relatively invariant mode of behaviour elicited or determined by a particular situation; may be verbal, postural, or expressive. (12 Dec 1998) |
| nesting behaviour | Animal behaviour associated with the nest; includes construction, effects of size and material; behaviour of the adult during the nesting period and the effect of the nest on the behaviour of the young. (12 Dec 1998) |
| sucking behaviour | Any suction exerted by the mouth; response of the mammalian infant to draw milk from the breast. Includes sucking on inanimate objects. Not to be used for thumb sucking, which is indexed under fingersucking. (12 Dec 1998) |
| dangerous behaviour | Actions which have a high risk of being harmful or injurious to oneself or others. (12 Dec 1998) |