Â· 43 comments. in Facts. An intelligence quotient, or IQ, is a score derived from one of several standardized tests designed to assess intelligence. The abbreviation âIQâ comes from the German term Intelligenz-Quotient, originally coined by psychologist William Stern.
Lower explosive limit. Lower explosive limit (LEL): The lowest concentration (percentage) of a gas or a vapor in air capable of producing a flash of fire in presence of an ignition source (arc, flame, heat). The term is considered by many safety professionals to be the same as the lower flammable limit (LFL).
These carriers are called lipoproteins.. LDL is a microscopic blob made up of an outer rim of lipoprotein and a cholesterol center. Its full name is low-density lipoprotein.. It's bad because it becomes part of plaque, the stuff that can clog arteries and make heart attacks and strokes more likely.