Stainless Steel and the passive layer Steel is an alloy of iron and carbon. Contrary to carbon steel, the presence of a minimum of 10.5 % chromium in the stainless steel gives it the property of corrosion resistance. Indeed, on contact with oxygen, a chromium oxide layer is formed on the surface of the material.
Sinus Drainage & Stomach Problems. One of the primary results of sinus congestion is drainage. Sinus drainage is expelled in two basic ways: through the nose and the back of the throat. When sinus drainage is expelled in back of the throat, it is referred to as postnasal drip and can cause stomach discomfort.
The feeling of this mucus draining down the back of your throat is postnasal drip. It often causes a sore throat, coughing, and problems swallowing. See a picture of postnasal drip. The increase in mucus that leads to postnasal drip can be caused by a cold, flu, allergies, sinus infections, or hormonal changes. Gargle with warm salt water to help get rid of throat soreness. Stir 1 tsp (5 g) of salt into 8 fl oz (240 mL) of lukewarm water. Gargle as often as you likeâthe more often, the better.