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.
The American Petroleum Inst. ( 1 API) has formed standards for oil/gas casing that are accepted in most countries by oil and service companies. Casing is classified according to five properties: 2  The manner of manufacture. 3  Steel grade. 4  Type of joints. 5  Length range. 6  The wall thickness (unit weight)