Knee meniscus tear A meniscus tear, damage to a piece of cartilage in the knee, causes pain and swelling. Cellulitis Cellulitis, a bacterial infection of the skin, causes red, tender skin that is usually swollen and warm. Insect bites Redness, swelling, pain, itching, bumps are common symptoms of insect bites.
|. International Standard Atmosphere (ISA) is a model used for the standardization of aircraft instruments. It was established, with tables of values over a range of altitudes, to provide a common reference for temperature and pressure. Flying in ISA-plus temperatures will have a negative impact on aircraft performance.
The International Standard Atmosphere defines what consitutes a normal atmosphere. The sea level pressure is defined as 1.01325 bar (29.92 inches of mercury); the sea level temperature is defined as 15Â° C (59Â° F); and the temperature decreases at a lapse rate of 6.5Â° C / km (3.57Â° F / 1,000 feet).True altitude corresponds to the normal sense of what we think of as elevation above sea level.he sea level pressure is defined as 1.01325 bar (29.92 inches of mercury); the sea level temperature is defined as 15Â° C (59Â° F); and the temperature decreases at a lapse rate of 6.5Â° C / km (3.57Â° F / 1,000 feet).