Some rocket engines burn liquid fuels while some burn solid fuels. Solid fuel rocket engines are sometimes called rocket motors. Liquid fuel rocket engines often require complex pumps and valves to properly move (and pressurize) the liquids from the fuel tank to the actual engine. These machines must work in extreme temperatures and pressures.
Esophagitis is any inflammation or irritation of the esophagus (the tube that sends food from your throat down to your stomach).Common causes include reflux (stomach contents backing up into the esophagus), certain oral medications, and bacterial or viral infections.This disorder can cause a wide variety of symptoms, including trouble swallowing, sore throat, and heartburn.ommon causes include reflux (stomach contents backing up into the esophagus), certain oral medications, and bacterial or viral infections. This disorder can cause a wide variety of symptoms, including trouble swallowing, sore throat, and heartburn.
Barrett's esophagus is a serious complication of GERD, which stands for gastroesophageal reflux disease. In Barrett's esophagus, normal tissue lining the esophagus-- the tube that carries food from the mouth to the stomach-- changes to tissue that resembles the lining of the intestine.