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Related to blasting: Explosives, Sand blasting, Grit blasting

blast

 [blast]
1. an immature stage in cellular development before appearance of the definitive characteristics of the cell; used also as a word termination, as in ameloblast and trophoblast.
blast cell.
2. the wave of air pressure produced by the detonation of high-explosive bombs or shells or by other explosions; it causes pulmonary damage and hemorrhage (lung blast, blast chest), laceration of other thoracic and abdominal viscera, ruptured eardrums, and effects in the central nervous system.

blast

(blast),
General term for immature or precursor cell.
[G. blastos, germ]

blast

(blast)
1. an immature stage in cellular development before appearance of the definitive characteristics of the cell; used also as a word termination (see -blast ).
2. blast cell (2).

blast

(blast) the wave of air pressure produced by the detonation of high-explosive bombs or shells or by other explosions; it causes pulmonary concussion and hemorrhage (lung blast, blast chest), laceration of other thoracic and abdominal viscera, ruptured eardrums, and minor effects in the central nervous system.

blast

1 a primitive cell, such as an embryonic germ cell.
2 a cell capable of building tissue, such as an osteoblast in growing bone.

BLAST

Basic Local Alignment Search Tool. A nucleic acid- and protein-sequence comparison algorithm which is used to find matches in gene sequences and to search sequence databases for optimal local alignments to a query sequence.

BLAST uses a heuristic algorithm, seeking local alignments and creating a matrix of similarity scores for all possible pairs of residues, defining high-scoring segments, statistically evaluating the significance of the results and detecting relationships among sequences which share only isolated regions of similarity.

blast

noun Hematology A general term for a primitive blood cell. See Blast cell, Blast crisis.

blast

(blast)
General term for immature or precursor cell.
[G. blastos, germ]

BLAST (Basic Local Alignment Search Tool)

a sequence comparison algorithm used to search DNA or PROTEIN databases. For example, BLASTN is used for homology searching to compare nucleotide sequences.

The query sequence is entered and compared with a nucleotide sequence database.

blast

(blast)
General term for immature or precursor cell.
[G. blastos, germ]

blast

1. an immature stage in cellular development before appearance of the definitive characteristics of the cell; used also as a word termination, as in ameloblast, etc.
2. the wave of air pressure produced by the detonation of high-explosive bombs or shells or by other explosions; it causes pulmonary damage and hemorrhage (lung blast, blast chest), laceration of other thoracic and abdominal viscera, ruptured eardrums, and effects in the central nervous system.

blast cells
the precursor cells of bone marrow. See also myeloblast, monoblast, erythroblast, megakaryoblast.
References in periodicals archive ?
Blasting will be used to cut cross passages and utility rooms in the rock between the two tunnels for the Metro Red Line subway extension between Hollywood and Universal City, Revey said.
The MTA already has halved the blasting it will do, restricting the work area to a 1,500-foot-long stretch of tunnel about 750 feet beneath Runyon Canyon Park in the Hollywood hills, Revey said.
It's a fully automatic reclamation system for blasting any type of steel," explains DiTullio.
The system then cleans the steel grit and dumps it back into the blasting pot.
simpler and more efficient blasting operations, once operators
enhanced safety at all stages of the blasting operation.
As a result, the process excels at cleaning small detail and lettering that often require additional blasting during abrasive blast cleaning.
The advantages of this application of our pulsed-power technology over blasting with conventional explosives suggest that it may have major commercial potential.
The hot spot can be checked by positioning a piece of steel plate where the work load would be and blasting the sheet for about 30 sec.
These coreboxes are softer than the older metal boxes, and grit blasting would wear and change the box dimensions.
They also will determine if the castings enter the cleaning room in significant quantities of the same castings or as a mixture of castings which may require sorting before blasting.