Treating Sleeping Sickness. The type of treatment depends on the stage of the disease. Drugs used in the first stage of the disease are of lower toxicity and are easier to administer. However, treatment success in the second stage of the disease depends on a drug that can cross the blood-brain barrier.
Definition of casinghead gas. : natural gas rich in hydrocarbon vapors that is taken without processing from an oil well.
Casing Material Water well casing may be constructed of steel or plastic (of various types). Permanent steel casing is not advised as it may corrode in certain groundwaters and also encourage the development of biofilm slimes. The driller should certify that the casing is suitable for the specific borehole. Factors that affect casing selection