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screen

 [skrēn]
1. a framework or agent used as a shield or protector; called also protectant and protective.
2. to separate well individuals in a population from those who have an undiagnosed disease, defect, or other pathologic condition or who are at high risk by means of tests, examinations, or other procedures. See also screening.
Bjerrum screen tangent screen.
fluoroscopic screen a phosphorescent screen that shows the movement and relationship of organs and structures in fluoroscopy.
intensifying screen a fluorescent screen used in conjunction with x-ray film to enhance the effect of the radiation and reduce dosage to the patient. The screen must be matched to the emissivity range; the emissivity of phosphorus is similar to that of the human eye, so that phosphors absorb x-ray energy and convert it to visible light.
tangent screen a large square of black cloth with a central mark for fixation; used with a campimeter in mapping the field of vision.

screen

(skrēn),
1. A sheet of any substance used to shield an object from any influence, such as heat, light, or x-rays.
See also: screen memory.
2. A sheet on which an image is projected.
See also: screen memory.
3. Formerly, to make a fluoroscopic examination.
See also: screen memory.
4. In psychoanalysis, concealment, as one image or memory concealing another.
See also: screen memory.
5. To examine, evaluate; to process a group to select or separate certain individuals from it.
6. A thin layer of crystals that converts x-rays to light photons to expose film; used in a cassette to produce radiographic images on film.
[Fr. écran]

screen

(skrēn)
n.
1. A movable device that serves to protect, conceal, or divide.
2. A surface or device on which an image is displayed for viewing.
3. A screen memory.
v.
1. To process a group of people in order to select or separate certain individuals from it.
2. To test or examine for the presence of disease or infection.
3. To subject to genetic screening.

screen

Molecular biology
verb To detect a phenotype’s presence or absence by testing for growth under different conditions (e.g., plus and minus an auxotrophic supplement or permissive and non-permissive conditions), usually done by replica plating or patching colonies onto each type of plate.
 
Public health
noun
(1) Any systematic activity—e.g., measuring BP, glucose or cholesterol; pap smear; or other activity—which attempts to identify a particular disease in persons in a particular population.
(2) A popular term for a solar protection barrier.

screen

Public health
1. Any systematic activity–eg, measuring BP, glucose or cholesterol, pap smear, or other activity, which attempts to identify a particular disease in persons in a particular population. See Drug screen, General health screen, Laxative screen, Memory Impairment screen, Metabolic screen, Neonatal screen.
2. A solar protection barrier. See Sunscreen.

screen

(skrēn)
1. A sheet of any substance used to shield an object from any influence (e.g., heat, light, x-rays).
2. A sheet on which an image is projected.
3. psychoanalysis Concealment, as one image or memory concealing another.
See also: screen memory
4. To examine, evaluate; to process a group to select or separate certain individuals from it.
5. A thin layer of crystals that converts x-rays to light photons to expose film; used in a cassette to produce radiographic images on film.
6. To examine for the presence or absence of specified characteristics to determine whether further examination is needed.
[Fr. écran]

screen

(skrēn)
1. A sheet of any substance used to shield an object from any influence, such as heat, light, or x-rays.
2. A sheet on which an image is projected.
3. To examine, evaluate; to process a group to select or separate some individuals from it.
Synonym(s): screening (1).
[Fr. écran]
References in periodicals archive ?
Depending on the working application of the machine, hydraulic adjustment can be used to vary the angle of the screen box between 13[degrees]-19[degrees].
In the rotary process, the ink is pumped into the center of the screen, which is formed into a cylinder (see photo on page 52).
A fine screen after the coarse screen separates small papers or other components that succeeded in passing through the screen apertures from the paper stream.
With repeated refined gestures, she fixes her hair, as if assessing herself in a mirror, and that gesture (primping for a role that may never come to pass) means victory in the screen test's world of simulacral stardom.
The radiation that passes through the object strikes the phosphor layers of the screen, causing them to fluoresce, which in turn exposes the film.
The difference between this and the mainframe screen is that the text came in multiple sizes and with some formatting effects, resulting in the display of more information on the screen.
For example, screen readers provide a synthesized voice, which, in conjunction with software, allows the user to hear what is displayed on the screen. Braille displays provide access to PCs, translating on-screen graphics and text to refreshable Braille.
In the choicest, eye-level section of the screen, the top item instead screamed: "Give good vibes?
The tilt angle is instrumental in determining the hydraulic performance of the screen. NIST measured the tilt angle with an optical projector to verify the USBR procedures for tilt-angle measurement.