blast

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blast

1. 
a. the rapid movement of air away from the centre of an explosion, combustion of rocket fuel, etc
b. a wave of overpressure caused by an explosion; shock wave
2. any of several diseases of plants and animals, esp one producing withering in plants

Blast

 

blasting, supplying air or other gases in industrial heat engineering plants in order to ensure or intensify the physicochemical processes taking place in them. The gas is compressed and supplied by means of blowers and compressors. There are two types of blast: cold blast, in which ordinary air is supplied, and hot blast, in which air is preheated to 1100°-1200°C. The substitution of a hot blast for a cold blast in metallurgy has increased the productivity of furnaces.

Blasts with a constant moisture content, which eliminates the adverse effect of moisture variations in ordinary air on smelting conditions, appeared in the 1940’s. Blasts enriched with oxygen to increase the rate of the smelting process began to be widely used in the 1960’s. The highest blast flow rate is characteristic of blast furnaces in which the average amount of gas supplied is 2 m3/min per cu m of furnace working volume (in modern blast furnaces, 6,000–7,000 m3/min, under a pressure of 0.3–0.5 meganewtons per sq m [MN/m2]). The simultaneous supply to the furnace of oxygen-enriched air and of natural gas not only increases the productivity but also reduces the consumption of coke. An oxygen blast supplied from above at a pressure of 0.9–1.5 MN/m2 and a rate of 300–800 m3/min is used in converter production.

blast

[blast]
(computer science)
To release internal or external memory areas from the control of a computer program in the course of dynamic storage allocation, making these areas available for reallocation to other programs.
(engineering)
The setting off of a heavy explosive charge.
(physics)
The brief and rapid movement of air or other fluid away from a center of outward pressure, as in an explosion.
The characteristic instantaneous rise in pressure, followed by a sudden decrease, that results from this movement, differentiated from less rapid pressure changes.

blast

i. The brief and rapid movement of air or other fluid away from a center of outward pressure, as in an explosion.
ii. The characteristic instantaneous rise in pressure followed by a sudden decrease that results from this movement, differentiated from less-rapid pressure changes.

blast

(1)
BLT, used especially for large data sends over a network or comm line. Opposite of snarf. Usage: uncommon. The variant "blat" has been reported.

blast

(2)
[HP/Apollo] Synonymous with nuke. Sometimes the message "Unable to kill all processes. Blast them (y/n)?" would appear in the command window upon logout.
References in periodicals archive ?
A spokesman at the launch site in Sweden said it was hoped the rocket would finally blast off this morning.
Blast Off is a free family fun day featuring the world's biggest toy companies.
a premier mobile learning architect for iPhone and iPod touch, today announced that its Brain Quest Blast Off game is now available on the Apple App Store.
space officials are confident the shuttle Columbia will blast off as planned tomorrow, ushering a new era in space travel.
Doohan, who played engineer Scotty in the long running series, is to blast off later this month.
The blast off chair vibrates as if you are being launched into space.
Rowland scored from just outside the box, a quick blast off the dribble to the upper-right corner, to deliver a 1-0 triumph to the Lobos (16-1-3) in front of 4,849 at the UNM Soccer Complex in Albuquerque, N.
But the crew were still forced to carry out repairs to the craft's heat shield after it was damaged by flying debris during blast off.
The Skylark rocket had been due to blast off for the last time at 6am (BST) but poor weather conditions forced experts to put the launch back until 10am (BST).
The Skylark rocket had been due to blast off at 6am but poor weather conditions forced experts to put the launch back four hours However, strong ground winds continued to hamper launch attempts throughout the morning and was postponed until early today.
Unlike NASA shuttles, SpaceShipOne didn't use rockets to blast off from the ground.
The first manned commercial mission to space will blast off on June 2.