Vane Air Flow Meters. A vane air flow meter (also known as a âflap styleâ meter and a VAF sensor) is an early type of air flow meter that measures air intake volume. This type of meter uses a spring-loaded flap that is attached to a variable resistor. As air enters, it pushes against the flap or plate opening it.
Bladder stones can be removed surgically by a cystotomy, opening of the bladder. Stones lodged in the urethra can often be flushed into the bladder and removed, but sometimes a urethrotomy is necessary.ladder stones can be removed surgically by a cystotomy, opening of the bladder. Stones lodged in the urethra can often be flushed into the bladder and removed, but sometimes a urethrotomy is necessary.
How to Get Rid of Kidney Stones Naturally. Kidney stones are solid, stone-like lumps that form within the kidneys. They can be as small as a grain of sand or as large as the size of a golf ball (sometimes even larger). Most stones are less than a third of an inch in diameter. The stones are accumulations of mineral salts and other substances.