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).
NGL are naturally occurring elements found in natural gas, and include propane, butane and ethane, among others.NGL are valuable as separate products and it is therefore profitable to remove them from the natural gas.The liquids are first extracted from the natural gas and later separated into different components.GL are naturally occurring elements found in natural gas, and include propane, butane and ethane, among others.