urea

/yoo-ree-uh, yoor-ee-uh/US // yʊˈri ə, ˈyʊər i ə //UK // (ˈjʊərɪə) //

尿素,脲,乌拉素

Definitions

n.名词 noun

1
- : Biochemistry. a compound, CO2, occurring in urine and other body fluids as a product of protein metabolism.
- : Chemistry. a water-soluble powder form of this compound, obtained by the reaction of liquid ammonia and liquid carbon dioxide: used as a fertilizer, animal feed, in the synthesis of plastics, resins, and barbiturates, and in medicine as a diuretic and in the diagnosis of kidney function.

Typically, the breakdown of proteins eventually creates urea, a nitrogen-containing chemical that gets excreted.
Compared with two other superplasticizers used in construction projects on Earth, “the urea worked very well,” Kjøniksen reports.
Other factors being equal, the amount of urea indicates the activity of metabolism.
Crystals of urea nitrate or oxalate (Fig. 19) will soon appear and can be recognized with the microscope.
The urea was not increased and the relation of urea to total nitrogen remained the same.
No urea escapes by the skin, but many acids (probably fatty ones) are liberated by that organ.
This remedy was thought to convert uric acid into urea, and to so help elimination.