Câu hỏi khó
tại sao ruột mềm mà gấu túi lại... ị phân vuông :D
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...There was speculation (suy xét, nghiên cứu, suy đoán) that wombats (gấu túi úc) had a square-shaped anal (hậu môn) sphincter (cơ thắt, cơ vòng), that the faeces (phân) get squeezed (bóp, vắt) between the pelvic bones (xương chậu), as well as the “complete nonsense” idea that wombats pat the faeces into shape after they deposit them.
The project originated four years ago when Carver was dissecting a euthanised wombat hit by a car and noticed the cubes (khối lập phương) in the last metre of the wombat’s intestine (ruột non). Carver described it as an “isn’t that odd moment”.
The team of researchers in Australia, including the head veterinarian (bác sĩ thú y) at Taronga zoo, Larry Vogelnest, tested the tensile (có thể căng ra, sức căng) strings of the intestine while physicists in the US based at the Georgia Institute of Technology created mathematical models (mô hình toán học) to simulate (giả lập) the production of cubes.
The team discovered big changes in the thickness of muscles inside the intestine, varying between two stiffer regions and two more flexible regions.
“The rhythmical contractions (co bóp) help form the sharp corners of the cubes,” Carver said.
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Tags: science
"--A new way of manufacturing cubes inside a soft tube, which could be applied to other fields including manufacturing clinical pathology and digestive health."
I could foresee a food additive that causes people to poo in cubes. That would be a boon to the makers of Preparation H. Some scientific studies should never be done---most of them, actually.