Monday, March 31st, 2014 at 2:27 pm. Whether your central heating or air conditioning system is running, when you detect any unpleasant smell coming from the air wafting through the vents, you need to have professionals investigate the cause right away. These odorsâmusty, mold, acrid, or anything elseâusually mean something serious has gone wrong in the system.
In its simplest form, a raster consists of a matrix of cells (or pixels) organized into rows and columns (or a grid) where each cell contains a value representing information, such as temperature. Rasters are digital aerial photographs, imagery from satellites, digital pictures, or even scanned maps.
[edit on Wikidata] A radioallergosorbent test (RAST) is a blood test using radioimmunoassay test to detect specific IgE antibodies, to determine the substances a subject is allergic to. This is different from a skin allergy test, which determines allergy by the reaction of a person's skin to different substances.