grid


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grid

 [grid]
1. a grating.
2. in radiology, a device consisting essentially of a series of narrow lead strips closely spaced on their edges and separated by spacers of low density material; used to reduce the amount of scattered radiation reaching the x-ray film.
3. a chart with horizontal and perpendicular lines for plotting curves.
Amsler grid see Amsler charts.
baby grid a direct-reading chart on infant growth.
cross-hatched grid two linear grids that are superimposed at right angles to each other, used for maximal scatter cleanup.
Cross-hatched grids are fabricated by sandwiching two linear grids together so that their grid strips are perpendicular. From Bushong, 2001.
grid cutoff differences in radiographic intensity that are caused by improper focusing of the lead lines of a grid.
focused grid a linear grid in which all of the lead strips are aligned in a tilted fashion toward a centering point.
linear grid a grid designed to permit the passage of the primary beam by having lead lines aligned in the same direction separated by radiolucent interspacing material. There are two types, parallel and focused.
Wetzel grid a direct-reading chart for evaluating physical fitness in terms of body build, developmental level, and basal metabolism.

grid

(grid),
1. A chart with horizontal and perpendicular lines for plotting curves.
2. In x-ray imaging, a device formed of lead or aluminum strips for preventing scattered radiation from reaching the x-ray film.
[M.E. gridel, fr. L. craticula, lattice]
GRID. An early (pre-1984) name for AIDS, based on the link between a collapsed immune system and the known association with male homosexuality

GRID

Gay-related immune deficiency An acronym used early in the AIDS epidemic, as the first cases affected homosexual/gay ♂. See AIDS.

grid

(grid)
1. A chart with horizontal and perpendicular lines for plotting curves.
2. x-ray imaging A device formed of lead strips for preventing scattered radiation from reaching the x-ray film.
[M.E. gridel, fr. L. craticula, lattice]

grid

(grid)
1. A chart with horizontal and perpendicular lines for plotting curves.
2. In x-ray imaging, device formed of lead or aluminum strips for preventing scattered radiation from reaching the x-ray film.
[M.E. gridel, fr. L. craticula, lattice]
References in periodicals archive ?
In addition to being cost-efficient, mini grids have many other benefits.
After an initial operational period and following performance and economic reviews of the cable system, LIPA plans to retain the new superconductor cable as a permanent part of its grid.
Grid technology and its applications are clearly presented, but require some background on Operating Systems, Concurrent Programming and Communication Networks.
Going by many titles--on-demand computing, utility computing, grid computing--they all point to the same vision: a virtual pool of data center resources dynamically responsive to user demands.
Theorem 1 There exists a Hamiltonian path for any conforming triangular grid that contains no local cut vertices.
"Businesses are adopting Grid computing at a quickening pace, and we believe the Globus Toolkit helps accelerate that adoption," said Ken King, vice president, Grid computing, IBM.
And grid is often used in discussions about next-generation data centre ideas like utility computing and organic IT.
A bioinformatics project will be among the first projects to run on the Grid The Bioinformatics Grid system, a cooperative project owned by Key laboratory of Bioinformatics, China Ministry of Education and Tsinghua University, was used to help identify the SARS gene and analyze similarities between different strains of the SARS virus.
-- Upload input files to the Grid Engine Portal with a single click
The first item needed is a 400-mesh electron microscope grid coated with either a single plastic layer or a plastic film reinforced with carbon (32,35,36).
Thom Dunning, director of North Carolina Bioinformatics Grid project.