All Answers (3) 1  Dear Sam Fenwick, The reflux ratio is indeed a sensitive operating variable and affects a daily profit. The optimal reflux ratio is closely related to the feed mole fraction, feed quality, relative volatility, and a separation factor which itself was a function of overhead and bottoms composition.
It is said that there are only 20 known cases of Pretzel Syndrome, a genetic disorder that occurs exclusively in the Plain Sect Communities. Learn about this tragic disease that claims most of its victims by age six.
For other uses, see Pretzel (disambiguation). A pretzel ( listen (helpÂ·info)) (German: Brezel) ( listen (helpÂ·info)) is a type of baked bread product made from dough most commonly shaped into a twisted knot. Pretzels originated in Europe, possibly among monks in the Early Middle Ages. The traditional pretzel shape is a distinctive nonsymmetrical form, with the ends of a long strip of dough intertwined and then twisted back into itself in a certain way (a pretzel loop). Pretzels now come in different shapes.