Corticosteroids are also used supportively to prevent nausea, often in combination with 5-HT3 antagonists (e.g. ondansetron). Typical undesired effects of glucocorticoids present quite uniformly as drug-induced Cushing's syndrome.
Common causes. A gas explosion occurs when the gas/air mixture reaches a critical value, then any spark, flame or heat source can ignite the mixture. The explosion is caused when the rapidly expanding, burning gas is confined and builds up pressure. As the pressure builds, something has to give, and in a home gas explosion it is usually the windows.
An explosion happens when a free gas expands very quickly, because of a chemical reaction that produces a gas, or because a container of pressurized gas ruptures. If the oil has a high enough vapor pressure, a match could light the vapor before it reached the wick, possibly causing an explosion.