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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

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]
References in periodicals archive ?
According to the company, this production loss will partly be compensated by the other blast furnaces of SSAB Europe and by the blast furnaces of SSAB Special Steels in Oxelosund.
Diao, "Fluidity of high alumina blast furnace slag," Journal of Iron and Steel Research, vol.
3.4 POLAND TO EMERGE AS A LUCRATIVE MARKET FOR BLAST FURNACE SLAG IN THE CENTRAL EASTERN EUROPEAN REGION
Coarse blast furnace slag as a cementitious material, comparative study as a partial replacement of Portland cement and as an alkali activated cement, Construction and Building Materials, 23(7): 2511-2517.
The biggest Japanese steelmaker will halt the operation of the second blast furnace at its Kimitsu iron mill in Chiba Prefecture in early 2012 to enlarge it at a cost of 40 billion yen, it said.
The ITmk3 Process can use lower-cost iron ore fines and steaming coal, which are difficult to use in blast furnace ironmaking.
The news comes on the heels of the company's decision to shut down a blast furnace it had just brought online in August and curtailing production on another.
BEIJING'S biggest steel company has shut down another of its blast furnaces as part of efforts to clean up the city before the Summer Olympics begin in August.
Each of the top BOF steel producers took significant action to curb production, with US Steel idling its largest blast furnace for a good part of the year to complete a rebuild.
As China's steelmaking capacity has grown, decision-makers there gravitated toward iron ore-dependent blast furnace steelmaking, rather than scrap-dependent EAF steelmaking.
Vital information about the safety of a blast furnace which exploded killing three men was unknown to senior managers an hour before the tragedy, an inquest has heard.
The European Commission granted regulatory clearance, on March 18, for plans by German companies Dillinger Hutte and Saarstahl to acquire France's Cokerie de Carling, which produces blast furnace coke.