If you've always wondered how alloy wheels were made, then check out this interesting tour of the Ray's Engineering factory in Japan. Video after the jump. Aluminium alloys or aluminum alloys are alloys of aluminium, often with copper, zinc, manganese, silicon, or magnesium.
Urea is transported to the kidneys for excretion. A normal range for blood urea nitrogen is generally 8 to 24 mg/dl for adult males and 6 to 21 mg/dl for females. Generally, a high blood urea nitrogen level means that the kidneys are not performing well, particularly if the result is above 50mg/dl.
Quick Answer. Normal blood urea nitrogen levels generally range from 7 to 20 milligrams per deciliter, according to Mayo Clinic. This range, however, varies with age and the reference range that the laboratory uses. An individual needs to seek an explanation of his BUN test results from the doctor. Continue Reading.