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 ?
Building collapses are not rare in Nigeria, often because of poor construction practices.
But the final report of the engineer will reveal the real cause of the collapse," said city Mayor, Niranjan Zanzmera.
Historically speaking, the Wave Function Collapse concept was brought into scientific debate by the conflict between the following two suppositions:
Most people who see Building 7's collapse have trouble believing that fires brought it down," says Richard Gage, a member of The American Institute of Architects and founder of Architects & Engineers for 9/11 Truth, which supports the ReThink911 campaign that sponsored the poll.
1987) (predicting that New Jersey would follow other states in holding that collapse required only "serious impairment of structural integrity"); Island Breakers v.
The city council report states: "The collapse occurred without visible or audible warning to the occupants of the garage and was sudden.
Farrell said this is the first collapse in Bolton he was aware of, and that Fire Chief John Stephenson had commented that since he joined the department 40 years ago there had never been a roof collapse in Bolton.
Mr Hardy added: "It is a blessing the building didn't collapse any later when there were people passing.
Rhondda Cynon Taf council said they were attempting to clear water from the bottom of the collapse.
The dollar did not collapse, and Buffett's Berkshire Hathaway got a haircut.
Bloggers and authors of other internet postings have posited for some time that the collapse of the Twin Towers at the World Trade Center may have been caused by more than just airplanes crashing into them.
Three others were killed in another building collapse in Qalyoub, some 20 kilometres (13 miles) north of Cairo.