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.
But the said condition is believed to be precipitated by the following conditions: 1  Injury to the chest. 2  Straining. Coughing with great strain can precipitate to the development of Tietze syndrome. 3  Stress or excessive exercise. 4  Radiation therapy to the chest area.