with different types of foam systems for structural firefighting and some have deployed front-line. apparatus with class A foam systems as an added tool in their firefighting arsenals. TYPES OF FOAM DELIVERY SYSTEMS. Class A foams consist of a mixture of water, foam concentrate, and air.
Skin Reaction from Vitamin D. I took a natural vitamin D3 supplement for several weeks and had a skin reaction on my back that slowly went away after I stopped taking it. There were no other variables that could have interfered at that time.
1 Vitamin B3: Niacin, an essential part of coenzymes of body metabolism. 2  Deficiency causes inflammation of the skin, vagina, rectum and mouth, as well as mental slowing. 3  Vitamin B6: Pyridoxine, a cofactor for enzymes. 4  Deficiency leads to inflammation of the skin and mouth, nausea, vomiting, dizziness, weakness and anemia.he one exception was vitamin K which was assigned its K from Koagulation by the Danish researcher Henrik Dam. 1  Vitamin A: Retinol. 2  Carotene compounds responsible for transmitting light sensation in the retina of the eye.