A common example of their use is in for loops. Consider the following loop, which counts from one to ten. In this case, the variable is incremented by one each time, until the terminating condition of greater than ten has been reached. It could just have easily been a while loop, or other expression.
PAVA spray is an incapacitant spray dispensed from a hand-held canister in a liquid stream. It contains a 0.3% solution of pelargonic acid vanillylamide (PAVA), a synthetic capsaicinoid, in a solvent of aqueous ethanol.The propellant is nitrogen.he liquid stream is a spray pattern and has a maximum effective range of up to 4 metres. Maximum accuracy, however, will be achieved over a distance of 1.25 â 2 metres.
Aerosol spray can. Aerosol spray is a type of dispensing system which creates an aerosol mist of liquid particles. This is used with a can or bottle that contains a payload and propellant under pressure. When the container's valve is opened, the payload is forced out of a small hole and emerges as an aerosol or mist. As propellant expands to drive out the payload, only some propellant evaporates inside the can to maintain a constant pressure.