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symbol for the element iridiumiridium
, metallic chemical element; symbol Ir; at. no. 77; at. wt. 192.217; m.p. about 2,410°C;; b.p. about 4,130°C;; sp. gr. 22.55 at 20°C;; valence +3 or +4.
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Abbrev. for infrared.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006


McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


Abbr. for “inside radius.”
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.






The country code for Iran.
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(1) (Industry Remarketer) See VAR and VAD.

(2) See infrared, IR detector and IrDA.

(3) See information resources.
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References in periodicals archive ?
Image receptor misplacement was also the second most common cause for periapical retakes (9.7%), due to similar errors in anterior-posterior receptor placement.
Although an automatic collimation system reduces the radiation field size to the dimensions of the image receptor, many pediatric patients are significantly smaller than the image receptor, resulting in the need for additional manual adjustment of collimation.
As general diagnostic imaging moves into the computer age, traditional Bucky devices are being replaced by image receptors. This is the case at Vassar Medical Center in Poughkeepsie, NY, where they recently acquired digital imaging technology.
The receptor entrance exposure rate measures exposure at the surface of the image receptor (with the grid removed) required to produce a single image for a given x-ray spectrum.
8A-B.) The positioning objectives are .to place the inlet valve "in plane," meaning directly perpendicular to the central ray and parallel with the image receptor. The image is further optimized by placing the nonimplanted side of the head closest to the image receptor.
The patient stands facing the image receptor with the edge of the film cassette firmly against the chest wall.
Facilities must ensure that the x-ray field in all mammography systems extends to or beyond the edge of the image receptor. This requirement is to ensure that the collimator permits complete coverage of the image receptor.[11]
A variety of filter shapes are used;[1-9] the filter shape usually is dependent on different image receptor systems, part positions and exposure factors.
The company said that its Nexus DRF Digital X-Ray Imaging System has the ability to interface with a variety of image receptors, including CCD cameras and commercially available flat-panel image detectors.
Image receptors on the floor pick up the images which are seen in a computer to make adjustments in angles according to the patientAAEs movements,Ao Nagarjuna said.