Air Flow Meters. Here you will find air flow meters to measure air velocity and air pressure. Depending on the type of application, air flow meters a re made as hot-wire air flow meters or pocket weather flow meters, both of which can measure air velocity and air pressure. The results of measuring the air velocity can be stored in memory of the device depending on the model.
Pores are a natural part of the skin; blackheads are the superficial plugs that may form within them. Pore dilatation begins with faulty exfoliation of cells lining the interior gland - cells are too sticky leading to microscopic plugs. Sebaceous glands continue to produce sebum that accumulates behind the plug. Protracted pooling of skin oils serves to nourish bacteria (like P. acnes and S. epidermidis). Blackheads and enlarged pores often go hand-in-hand. Blackheads can either expand pores or simply focus attention on them.
After all, the stuff that comes out of your pores doesnât seem clean at all. But underneath your skin are glands called sebaceous glands, and they have a very important purpose. The oil excreted by the sebaceous glands, called sebum, acts like a glue to cling to dead skin cells. The skin cells are then excreted from the body through the pores to help you maintain healthy skin. Sometimes, as the glands expel these dead skin cells, build-up can occur and your pores will clog. The gland will continue to produce oil with no way to release the excess. The result is an infection called a pimple or blackhead.