Collapse

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collapse

[kə′laps]
(engineering)
Contraction of plastic container walls during cooling; produces permanent indentation.
(materials)
The flattening of cells in heartwood during drying or pressure treatment; often characterized by a caved-in or corrugated surface appearance.

Collapse

 

acute vascular insufficiency accompanied by a fall in arterial and venous blood pressure.

Collapse is a result of a disturbance of the regulation of vascular tonus and injury to the vascular walls through infection, intoxication, massive blood loss, severe dehydration, myocardial affection (acute myocardial infarction), and other pathological conditions. Collapse is characterized by a decrease of blood flow to the heart, a deterioration of the blood supply to the vital organs, and the development of hypoxia. The patient’s facial features become pinched and the eyes roll back. He becomes pallid, with sticky perspiration and cold extremities. If the patient is conscious, he lies immobile and indifferent to his surroundings. Breathing is superficial and accelerated. The pulse is rapid. The most accurate index of the gravity of the patient’s condition is the degree to which arterial pressure is lowered. Severe collapse may be a direct cause of death. Collapse is treated with the immediate use of agents that stimulate the vascular and respiratory centers and with vasoconstrictors, blood transfusions, and blood substitutes. Measures should also be directed toward the elimination of the primary causes of the collapse.

collapse

Mechanical failure of cells in wood, usually caused by abnormal or forced drying.
References in periodicals archive ?
Three workers were killed and four others seriously injured after a 90-meter tall crane collapsed at a construction site in Yongin, Gyeonggi Province.
junction in the Pakmodia Street of Mumbai's Dongri area, collapsed at around 3:30 pm.
The Dome is an 180,000-square foot indoor sports facility in Anchorage, Alaska, where the roof collapsed earlier this year under the weight of accumulated snow.
In April 1987, a bridge on the New York State Thruway near Amsterdam, collapsed, killing 10 people.
Governor of Sharqeya Khaled Saeed claimed in press statements that the collapse was caused by construction work on residential tower adjacent to the collapsed building.
There is possibility that some people could still be trapped in the collapsed building, as rescue effort is still on.
Waggamon says the workers were doing maintenance to strengthen the tower's support when it collapsed.
It wasn't as if the Aussies collapsed on their own.
MENA said Sunday that the building was in the densely populated Moharam Bey neighborhood and that it likely collapsed because of the construction of an apartment building next door.
t=0], the system propagates forward in time to the (t = [tau])-state, the collapsed state for short:
LAHORE, August 11, 2011 (Frontier Star): At least six people were injured when the dilapidated roof of a building collapsed in the heavy rain in the Gumti Bazar area here on Wednesday.
Two garages collapsed in Clinton Tuesday, the latest victims of the heavy snow this season.