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 ?
Preliminary readings of the, seismic recordings show no obvious indication of the other four blasts, says van der Vink.
The blasts on Wednesday both measured in the hundreds of tons.
It was the one blast, it was in accordance with all the conditions that were set on it, yet it startled the neighbors in a large area because of the loud noise,'' Parks said Monday.
one of the two Dos Vientos Ranch developers, said proper safety precautions were taken and city officials were present before, during and after the blast.
The objective of blast equipment design is to enable the blast stream to strike all surfaces of a casting with sufficient force to thoroughly remove contaminants without etching the casting surface.
fortification walls, overhead protection for bunkers, significant protection improvement for existing barriers and revetments, ISO container (temporary shelters), command posts, traffic check points, defensive fighting positions, and large-scale bomb blast fortifications.
hoped to learn whether the air blast could yield clues to far worse air blasts caused by volcano eruptions.
The three blasts broke away large chunks near the base of the boulder, which officials believe weighs 50,000 tons, but more than half of it remained standing upright on top of the tunnel.
whose background is in explosive engineering and the measurement and mitigation of blast in IED disposal scenarios, explains "the products currently being sold in the marketplace today are at best blast-resistant trash receptacles.
greater control over blast sequencing and the sizing of blasted
Serving the homeland security, law enforcement, military and commercial markets, MSI is adding one of our Nation's oldest Federal institutions to its list of clients with the delivery of bomb-mitigating trash cans which utilize a patented technology to absorb blast energy and fragments of an explosive device.