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 ?
On July 23, a blast had occurred in the Eastern Bypass area which left four people dead and 32 injured.
He said that a nationalist organization Peoples Liberation Army (JSMM Shafi Burfat group) was found involved in the blast. Further investigation was in progress.
He added, "A white color car was used in the blast and the closed-circuit television cameras in the area will tell us where the car came from."
This vestibule helps minimise any sound escaping from the blast zone.
In the early days of blast design it was believed that a blast broke in an equal radius around a borehole and that depending on the powder factor of a blast the fragmentation and throw of a blast could be changed.
In order to increase the production of the excavation team, a mine can implement blast casting practices on site.
Officials further revealed that the blast was pre-planned and the objective was to draw first responders and people to the blast site after the first bomb exploded and then detonate the second bomb.
Orica wants to transform how drill and blast unlocks mining value for our customers, utilising digital and automated technologies to create safer, predictable and more productive blast outcomes BlastIQ enables us to collaborate with customers to realise this transformation.
Warning: The following photos, showing the aftermath of the blast, might be too graphic for some readers: 
However, he added, it was being ascertained whether it was a grenade blast or was caused by any other device.
In mining industries, three types of materials, including solid, liquid, and colloidal materials, are used as stemming materials in blast holes.
It covers a broad base of explosives topics focused on improving blast performance, including design, measurements and geological factors relating to shot design.