Theoretically, in vitro fertilisation could be performed by collecting the contents from a woman's fallopian tubes or uterus after natural ovulation, mixing it with sperm, and reinserting the fertilised ova into the uterus.
Upstream operations deal primarily with the exploration stages of the oil and gas industry, with upstream firms taking the first steps to first locate, test and drill for oil and gas. Later, once reserves are proven, upstream firms will extract any oil and gas from the reserve.
1. in the direction of a stream's current. Familiarity information: DOWNSTREAM used as an adjective is very rare. â¢ DOWNSTREAM (adverb). The adverb DOWNSTREAM has 1 sense: 1. away from the source or with the current. Familiarity information: DOWNSTREAM used as an adverb is very rare.. in the direction of a stream's current. Familiarity information: DOWNSTREAM used as an adjective is very rare. â¢ DOWNSTREAM (adverb). The adverb DOWNSTREAM has 1 sense: 1. away from the source or with the current. Familiarity information: DOWNSTREAM used as an adverb is very rare.